/*
|--------------------------------------------------------------------------
| Vocabulary CSS - Combined Output
|--------------------------------------------------------------------------
| تعليق عربي:
| هذا الملف هو الناتج المجمّع الذي يتم تحميله داخل Blade عبر file_get_contents().
| لا تعدّل هذا الملف يدويًا كمصدر أساسي إلا عند الضرورة.
|
| المصدر المنظم للتعديل هو الملفات التالية وبنفس الترتيب:
| 1. vocabulary-base.css
| 2. vocabulary-card.css
| 3. vocabulary-swipe.css
| 4. vocabulary-simple.css
|
| عند تعديل أي ملف من الملفات الأربعة، يجب تحديث هذا الملف المجمّع أيضًا.
| لا تستخدم @import هنا لأن CSS يتم حقنه داخل <style>.
*/
/* ===== vocabulary-base.css ===== */
/*
|--------------------------------------------------------------------------
| Vocabulary Base CSS
|--------------------------------------------------------------------------
| تعليق عربي:
| هذا الملف يحتوي إعدادات صفحة المفردات العامة:
| المتغيرات، أزرار الصفحة، الفلاتر، الرحلة، المودالات، وحالات الصفحة العامة.
| بعد أي تعديل هنا يجب تحديث page.css المجمّع.
*/

/* الهوية البصرية: أحمر #B60000 لصفحة دراسة المفردات */
/* Scroll target: keep cards clear of sticky/fixed header when jumping from top button */
#vocab-flashcard-study-shell,
#vocabulary-grid-wrap {
    scroll-margin-top: calc(4.5rem + env(safe-area-inset-top, 0px));
}
#vocabulary-grid-wrap.row {
    justify-content: center;
    max-width: 100%;
    margin-inline: auto;
}
#vocabulary-grid-wrap .vocabulary-grid-col {
    display: flex;
    justify-content: center;
}
#vocabulary-grid-wrap .vocabulary-card-wrapper {
    width: 100%;
    max-width: min(var(--vocab-stack-card-w, 340px), 100%);
    margin-inline: auto;
}

.vocabulary-grid-toolbar {
    width: 100%;
}

.vocab-jump-to-cards-wrap .vocab-jump-to-cards-btn,
.vocabulary-index-page .vocab-jump-to-cards-btn {
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 16px rgba(182, 0, 0, 0.22);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.vocab-jump-to-cards-wrap .vocab-jump-to-cards-btn:hover,
.vocabulary-index-page .vocab-jump-to-cards-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(182, 0, 0, 0.28);
}

.vocab-jump-to-cards-wrap .vocab-jump-to-cards-btn:active,
.vocabulary-index-page .vocab-jump-to-cards-btn:active {
    transform: translateY(0);
}

.vocabulary-index-page {
    --brand: #B60000;
    --brand-dark: #9a0000;
    --vocab-stack-card-h: 448px;
    --vocab-stack-card-w: 340px;
    --vocab-stack-tail-space: 12px;
    --vocab-safe-viewport-h: 100vh;
    --vocab-safe-viewport-w: 100vw;
    --vocab-study-bottom-clearance: calc(env(safe-area-inset-bottom, 0px) + 8px);
    position: relative;
}

.vocab-cards-top {
    margin-bottom: 1.5rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(182, 0, 0, 0.08);
}

.vocab-review-progress-panel {
    width: min(var(--vocab-stack-card-w, 340px), 100%);
    margin: 0 auto 0.65rem;
    border: 1px solid rgba(182, 0, 0, 0.14);
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 247, 247, 0.96));
    box-shadow: 0 8px 24px rgba(182, 0, 0, 0.1);
    overflow: hidden;
}

.vocab-review-progress-panel__toggle {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
    border: 0;
    padding: 0.55rem 0.7rem;
    background: transparent;
    color: #7f1d1d;
    font-weight: 800;
    text-align: start;
}

.vocab-review-progress-panel__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: #B60000;
    color: #fff;
    box-shadow: 0 4px 12px rgba(182, 0, 0, 0.2);
}

.vocab-review-progress-panel__count {
    min-width: 3.2rem;
    border-radius: 999px;
    padding: 0.22rem 0.48rem;
    background: #fff;
    color: #B60000;
    text-align: center;
    box-shadow: inset 0 0 0 1px rgba(182, 0, 0, 0.16);
}

.vocab-review-progress-panel__list {
    max-height: 170px;
    overflow-y: auto;
    border-top: 1px solid rgba(182, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.82);
}

.vocab-review-progress-panel__item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.2rem 0.55rem;
    padding: 0.42rem 0.7rem;
    border-bottom: 1px solid rgba(148, 163, 184, 0.16);
    color: #334155;
}

.vocab-review-progress-panel__item.is-active {
    background: rgba(182, 0, 0, 0.06);
    color: #7f1d1d;
}

.vocab-review-progress-panel__item-index {
    grid-row: 1 / span 2;
    align-self: center;
    font-size: 0.74rem;
    font-weight: 800;
    color: #B60000;
}

.vocab-review-progress-panel__item-word {
    font-weight: 800;
}

.vocab-review-progress-panel__item-meaning {
    font-size: 0.8rem;
    color: #64748b;
}

.vocab-study-mode-toggle {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    margin: 1.15rem auto 0.85rem;
    text-align: center;
}

.vocab-study-mode-toggle__label {
    font-weight: 700;
    color: #334155;
}

.vocab-study-mode-toggle__buttons {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.25rem;
    border: 1px solid rgba(182, 0, 0, 0.16);
    border-radius: 999px;
    background: rgba(182, 0, 0, 0.05);
}

.vocab-study-mode-toggle__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 0;
    border-radius: 999px;
    padding: 0.45rem 0.8rem;
    background: transparent;
    color: #7f1d1d;
    font-weight: 700;
    line-height: 1.1;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.vocab-study-mode-toggle__btn.is-active,
.vocab-study-mode-toggle__btn[aria-current="page"] {
    background: #B60000;
    color: #fff;
    box-shadow: 0 8px 18px rgba(182, 0, 0, 0.22);
}


@supports (height: 100svh) {
    .vocabulary-index-page {
        --vocab-safe-viewport-h: 100svh;
    }
}
@supports (height: 100dvh) {
    .vocabulary-index-page {
        --vocab-safe-viewport-h: 100dvh;
    }
}
.vocabulary-partial-loading {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.62);
    backdrop-filter: blur(1px);
    z-index: 3000;
    pointer-events: all;
}
.vocabulary-partial-loading.is-active {
    display: flex;
}
.vocabulary-partial-loading__content {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.12);
    color: #334155;
    font-weight: 600;
}
.vocabulary-index-page .btn--primary,
.vocabulary-index-page .btn--primary:hover {
    background: #B60000 !important;
    border-color: #B60000 !important;
    color: #fff !important;
}
.vocabulary-index-page .btn-outline--primary {
    color: #B60000 !important;
    border-color: #B60000 !important;
}
.vocabulary-index-page .btn-outline--primary:hover {
    background: #B60000 !important;
    border-color: #B60000 !important;
    color: #fff !important;
}
.vocabulary-index-page .vocab-journey .journey-stats {
    background: rgba(182, 0, 0, 0.08);
    border-color: rgba(182, 0, 0, 0.2);
}
.vocabulary-index-page .vocab-journey .journey-line-fill {
    box-shadow: inset 0 1px 0 rgba(255,255,255,.35), 0 8px 16px rgba(182, 0, 0, 0.2);
}
.vocabulary-index-page.public-vocab-locked .vocabulary-status-btn,
.vocabulary-index-page.public-vocab-locked .stack-undo-btn,
.vocabulary-index-page.public-vocab-locked .stack-shuffle-btn {
    opacity: 0.55;
}
.vocabulary-level-gate-modal.modal.show { background: rgba(0, 0, 0, 0.5); }
.vocabulary-level-gate-modal .modal-content { box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15); }


/* Stack footer controls — brand primary (matches .btn--primary on this page) */
.btn-report-error-outside {
    color: #fff !important;
    background: #B60000 !important;
    border: 1px solid #B60000 !important;
}
.btn-report-error-outside:hover:not(:disabled),
.btn-report-error-outside:focus-visible:not(:disabled) {
    color: #fff !important;
    background: #9a0000 !important;
    border-color: #9a0000 !important;
}
.btn-report-error-outside:disabled {
    opacity: 0.62;
    cursor: not-allowed;
}
/* أزرار تبديل طريقة عرض البطاقة: الحالة المفعّلة (الحالية) */
.btn-grid-disabled {
    color: #1f2937;
    background: #d1d5db;
    border: 1px solid #6b7280;
    cursor: default;
    font-weight: 600;
}
.btn-swipe-disabled {
    color: #fff;
    background: #B60000;
    border: 1px solid #B60000;
    cursor: default;
    font-weight: 600;
    opacity: 1;
}
/* أزرار تبديل طريقة عرض البطاقة: الحالة غير المفعّلة (قابلة للضغط) */
#vocab-view-toggle-wrap .btn-outline--secondary {
    color: #374151 !important;
    border-color: #6b7280 !important;
    background: transparent;
    font-weight: 500;
}
#vocab-view-toggle-wrap .btn-outline--secondary:hover {
    color: #1f2937 !important;
    background: #e5e7eb !important;
    border-color: #4b5563 !important;
}
#vocab-view-toggle-wrap .btn-outline--primary {
    color: #B60000 !important;
    border-color: #B60000 !important;
    background: transparent;
    font-weight: 500;
}
#vocab-view-toggle-wrap .btn-outline--primary:hover {
    background: rgba(182,0,0,0.1) !important;
    border-color: #B60000 !important;
    color: #B60000 !important;
}
.stack-card .stack-back-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    width: 100%;
    align-items: stretch;
    padding-top: calc(var(--stack-card-top-zone-h) + 0.05rem);
    padding-bottom: var(--stack-card-bottom-zone-h);
    gap: 0.22rem;
}
.stack-card .stack-back-scroll {
    flex: 1;
    min-height: 0;
    max-height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    width: 100%;
    box-sizing: border-box;
    padding: 0.1rem 0.2rem 0.28rem;
    line-height: 1.55;
}
.stack-card .stack-back-footer {
    flex-shrink: 0;
    width: 100%;
    box-sizing: border-box;
    padding-top: 0.25rem;
    border-top: 1px solid rgba(226, 232, 240, 0.95);
    margin-top: 0.2rem;
}

/* عدادات إجابات الستاك: بديل واضح عن النقاط الكثيرة. */
.stack-dots-wrap { display: flex; justify-content: center; }
.stack-answer-counters {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    width: min(100%, 440px);
    padding: 0 0.5rem;
}
/* تعليق عربي: ترتيب بصري يسار→وسط→يمين (جديدة/نسيتها / 3 أيام / أعرفها) بدون grid متعدد الصفوف. */
.stack-answer-counters .stack-answer-counter--forgot { order: 1; }
.stack-answer-counters .stack-answer-counter--review { order: 2; }
.stack-answer-counters .stack-answer-counter--known { order: 3; }
.stack-answer-counter {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    flex: 1 1 0;
    min-width: 0;
    border-radius: 12px;
    padding: 0.35rem 0.55rem;
    text-align: center;
    border: 1px solid rgba(148, 163, 184, 0.28);
    background: rgba(248, 250, 252, 0.92);
}
.stack-answer-counter[hidden] {
    display: none !important;
}
.stack-answer-counter__label {
    display: block;
    font-size: clamp(0.58rem, 2vw, 0.72rem);
    font-weight: 700;
    line-height: 1.2;
    color: #64748b;
    white-space: normal;
}
.stack-answer-counter__value {
    display: block;
    margin-top: 0;
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1;
    flex-shrink: 0;
}
.stack-answer-counter--forgot .stack-answer-counter__value { color: #dc2626; }
.stack-answer-counter--known .stack-answer-counter__value { color: #16a34a; }
.stack-answer-counter--review .stack-answer-counter__value { color: #8b5cf6; }

/* Report row message, auto-hide */
.stack-flip-first-msg {
    max-width: 35%;
    width: max-content;
    padding: 0.65rem 1rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: #854d0e;
    background: #fef9c3;
    border: 1px solid #eab308;
    border-radius: 8px;
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
}
.stack-flip-first-msg.stack-flip-first-msg-visible { opacity: 1; }
.stack-flip-first-msg-text { display: inline; line-height: 1.45; }
@media (max-width: 576px) {
    .stack-flip-first-msg { max-width: 55%; font-size: 1rem; }
}

/* Intro: single line on desktop, hidden on mobile */
.vocabulary-intro {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0 auto 0.75rem;
    padding: 0.5rem 0.75rem;
    text-align: left;
    max-width: 100%;
}
.vocabulary-intro .vocabulary-intro-title { font-size: 1.1rem; margin: 0; white-space: nowrap; flex-shrink: 0; }
.vocabulary-intro .vocabulary-intro-desc {
    font-size: 0.9rem;
    line-height: 1.3;
    color: #64748b;
    margin: 0;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
@media (max-width: 767px) {
    .vocabulary-intro { display: none; }
}
.vocab-journey .vocabulary-usage-btn-inline {
    flex-shrink: 0;
    padding: 0.25rem 0.5rem;
    font-size: 0.9rem;
}
.vocab-journey .vocabulary-usage-btn-inline i {
    font-size: 1.5rem;
    vertical-align: middle;
}
@media (max-width: 576px) {
    .vocab-journey .journey-top { gap: 0.35rem; }
    .vocab-journey .vocabulary-usage-btn-inline { padding: 0.2rem 0.4rem; }
    .vocab-journey .vocabulary-usage-btn-inline i { font-size: 1.4rem; }
}

/* Vocabulary journey (0–100% like lesson statistics) */
.vocab-journey {
    --p: 0;
    --brand: #0d6efd;
    --brand-dark: #0a58ca;
    --border: rgba(0,0,0,.08);
    margin-bottom: 2rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.vocab-journey .journey-top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}
.vocab-journey .journey-title { font-size: 1.1rem; font-weight: 700; color: #1e293b; }
.vocab-journey .journey-percent { font-size: 1.1rem; font-weight: 800; color: var(--brand); }
.vocab-journey .journey-track {
    position: relative;
    height: 56px;
    margin-top: 0.75rem;
    border-radius: 14px;
    background: linear-gradient(180deg, #fff, #fafafa);
    border: 1px solid var(--border);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 8px 16px rgba(17,24,39,.05);
    overflow: hidden;
}
.vocab-journey .journey-line {
    position: absolute;
    left: 44px;
    right: 44px;
    top: 50%;
    transform: translateY(-50%);
    height: 14px;
    border-radius: 999px;
    background: #eef2f7;
    border: 1px solid rgba(17,24,39,.08);
}
.vocab-journey .journey-line-fill {
    position: absolute;
    left: 44px;
    top: 50%;
    transform: translateY(-50%);
    height: 14px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--brand), var(--brand-dark));
    width: calc((100% - 88px) * var(--p) / 100);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.35), 0 8px 16px rgba(13,110,253,.15);
}
.vocab-journey .journey-flag {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.35rem;
    line-height: 1;
    filter: drop-shadow(0 6px 10px rgba(17,24,39,.1));
}
.vocab-journey .journey-flag.start { left: 12px; }
.vocab-journey .journey-flag.goal { right: 12px; }
.vocab-journey .journey-walker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -55%);
    font-size: 2rem;
    line-height: 1;
    left: calc(44px + ((100% - 88px) * var(--p) / 100));
    filter: drop-shadow(0 8px 14px rgba(17,24,39,.12));
}
/* One row: left = count/goal, right = per day + session timer */
.vocab-journey .journey-stats-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(255,255,255,0.6);
    border-radius: 10px;
    border: 1px solid var(--border);
}
.vocab-journey .journey-stats-left {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.5rem 0.75rem;
    font-size: 0.95rem;
    color: #475569;
}
.vocab-journey .journey-stats-left .journey-stats {
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.9rem;
    color: #1e293b;
    background: rgba(13,110,253,.08);
    border: 1px solid rgba(13,110,253,.2);
}
.vocab-journey .journey-stats-left .journey-stats-label { font-weight: 500; }
.vocab-journey .journey-stats-left .journey-remaining { font-size: 0.9rem; }
.vocab-journey .journey-stats-right {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    font-size: 0.9rem;
    color: #475569;
}
.vocab-journey .journey-stats-right .journey-per-day strong,
.vocab-journey .journey-stats-right .journey-session-timer strong { color: #1e293b; }
.vocab-journey .journey-session-timer {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: rgba(15,23,42,.06);
    border-radius: 6px;
    font-variant-numeric: tabular-nums;
}
.vocab-journey .journey-session-timer i { color: #64748b; }
[dir="rtl"] .vocab-journey .journey-stats-row { flex-direction: row-reverse; }
.vocab-journey .journey-meta {
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    font-size: 0.9rem;
    color: #475569;
}
.vocab-journey .journey-meta.journey-meta-msg { margin-top: 0.25rem; }
.vocab-journey .journey-meta strong { color: #1e293b; }
/* Daily new words counter + celebration */
.vocab-daily-new-words {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin-top: 0.75rem;
    padding: 0.6rem 0.85rem;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, rgba(34, 197, 94, 0.04) 100%);
    border: 1px solid rgba(34, 197, 94, 0.25);
    border-radius: 10px;
    font-size: 0.95rem;
}
.vocab-daily-new-words .daily-new-words-count {
    font-weight: 700;
    color: #15803d;
    font-variant-numeric: tabular-nums;
}
.vocab-daily-new-words .daily-new-words-count span { color: #1e293b; font-weight: 600; }
.vocab-daily-new-words .daily-new-words-progress {
    flex: 1;
    min-width: 80px;
    max-width: 140px;
    height: 8px;
    background: rgba(34, 197, 94, 0.2);
    border-radius: 4px;
    overflow: hidden;
}
.vocab-daily-new-words .daily-new-words-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    border-radius: 4px;
    transition: width 0.35s ease;
}
.vocab-daily-new-words.daily-goal-reached .daily-new-words-progress-fill { background: #16a34a; }
/* Level progress (A1 words): اتجاه يسار→يمين مثل الرحلة + نسبة مئوية */
.level-progress-box--journey-style .level-progress-bar-wrap {
    direction: ltr;
}
.level-progress-box--journey-style .level-progress-bar-fill {
    margin-left: 0 !important;
    margin-right: auto !important;
}
.level-progress-box--journey-style .level-progress-percent {
    background: linear-gradient(135deg, #B60000, #8B0000);
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 1px 3px rgba(182, 0, 0, 0.3);
}
.level-progress-box--journey-style .level-progress-meta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
/* Per-level vocabulary report cards: each level has 3 live counters */
.vocab-level-report-wrap {
    padding: 0.95rem;
    border-radius: 14px;
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
}
.vocab-level-report-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}
.vocab-level-report-head__title {
    font-size: 1rem;
    font-weight: 700;
    color: #0f172a;
}
.vocab-level-report-head__hint {
    color: #64748b;
    font-size: 0.85rem;
}
.vocab-level-report-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
    gap: 0.75rem;
}
.vocab-level-report-card {
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 12px;
    padding: 0.75rem;
    background: #fff;
    min-height: 188px;
}
.vocab-level-report-card.js-vocab-level-card {
    cursor: pointer;
}
/* مودالات هذه الصفحة فوق الهيدر دائمًا (الهيدر يصل إلى z-index: 10050) */
.modal-backdrop {
    z-index: 10100 !important;
}
.modal {
    z-index: 10105 !important;
}
.vocab-level-words-modal-dialog {
    max-width: 420px;
    margin-top: 4.5rem;
    margin-bottom: 1rem;
    transform: none;
    max-height: calc(var(--vocab-live-viewport-h, var(--vocab-safe-viewport-h, 100vh)) - 5.5rem);
    display: flex;
    flex-direction: column;
}
#vocabLevelWordsModal .modal-content {
    max-height: calc(var(--vocab-live-viewport-h, var(--vocab-safe-viewport-h, 100vh)) - 5.5rem);
    display: flex;
    flex-direction: column;
}
#vocabLevelWordsModal .modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}
#vocabLevelWordsModal .modal-body {
    padding-top: 0;
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
}
#vocabLevelWordsModal .modal-footer {
    flex-shrink: 0;
}
.vocab-level-words-table-wrap .table-responsive {
    overflow-y: auto;
}
.vocab-level-words-table {
    margin-bottom: 0;
    font-size: 0.875rem;
}
.vocab-level-words-table thead th {
    font-weight: 600;
    font-size: 0.8rem;
    color: #334155;
    border-bottom: 1px solid #e2e8f0;
    padding: 0.35rem 0.5rem;
    white-space: nowrap;
}
.vocab-level-words-table thead th.vocab-level-words-th-num {
    width: 2.5rem;
    min-width: 2.5rem;
    text-align: center;
    white-space: nowrap;
    direction: ltr;
}
.vocab-level-words-table thead th.vocab-level-words-th-check {
    min-width: 5.5rem;
}
.vocab-level-words-table tbody td {
    padding: 0.35rem 0.5rem;
    vertical-align: middle;
}
.vocab-level-words-table tbody td.vocab-level-words-td-num {
    width: 2.5rem;
    min-width: 2.5rem;
    text-align: center;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    color: #64748b;
    font-size: 0.8rem;
    direction: ltr;
}
.vocab-level-words-table tbody tr.vocab-level-words-row {
    cursor: pointer;
}
.vocab-level-words-table tbody tr:hover {
    background: #f8fafc;
}
.vocab-level-words-table .vocab-level-word-de {
    dir: ltr;
    font-weight: 500;
}
.vocab-level-words-table .vocab-level-word-ar {
    dir: rtl;
    color: #64748b;
}
.vocab-level-words-table .js-level-word-check {
    margin: 0;
    cursor: pointer;
}
.vocab-level-words-sort {
    min-width: 120px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    font-size: 0.8125rem;
}
.vocab-level-words-select-all-label {
    cursor: pointer;
    user-select: none;
}
.vocab-level-words-select-all-label .form-check-input {
    cursor: pointer;
}
.vocab-level-words-pagination {
    padding: 0.25rem 0;
}
.vocab-level-words-pagination .vocab-level-words-page-info {
    min-width: 5rem;
    text-align: center;
    font-weight: 600;
    color: #475569;
    font-variant-numeric: tabular-nums;
}
.vocab-level-words-btn-pag {
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid rgba(182, 0, 0, 0.35);
    background: #fff;
    color: #b60000;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.vocab-level-words-btn-pag .las {
    color: #b60000 !important;
}
.vocab-level-words-btn-pag:hover:not(:disabled) {
    background: rgba(182, 0, 0, 0.08);
    border-color: #b60000;
    color: #8b0000;
}
.vocab-level-words-btn-pag:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    color: #b60000 !important;
}
.vocab-level-words-btn-pag:disabled .las {
    color: #b60000 !important;
}
/* تعليق عربي: في RTL نريد السابق بسهم يمين، التالي بسهم يسار.
   نكتفي بعكس أيقونة Line Awesome داخل هذا pager فقط. */
[dir="rtl"] .vocab-level-words-pagination .js-vocab-level-words-prev .las,
[dir="rtl"] .vocab-level-words-pagination .js-vocab-level-words-next .las {
    transform: scaleX(-1);
}
.vocab-level-words-footer {
    border-top: 1px solid #e2e8f0;
    background: #f8fafc;
}
.vocab-level-words-btn {
    padding: 0.4rem 0.9rem;
    font-weight: 600;
    font-size: 0.8125rem;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}
.vocab-level-words-btn:active:not(:disabled) {
    transform: scale(0.98);
}
.vocab-level-words-btn-close {
    border: 1px solid #94a3b8;
    background: #64748b;
    color: #fff;
}
.vocab-level-words-btn-close:hover {
    background: #475569;
    border-color: #64748b;
    color: #fff;
}
.vocab-level-words-btn-delete {
    border: 1px solid #b91c1c;
    background: #b91c1c;
    color: #fff;
}
.vocab-level-words-btn-delete:hover:not(:disabled) {
    background: #991b1b;
    border-color: #991b1b;
}
.vocab-level-words-btn-delete:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.reset-level-label-field {
    background-color: #e2e8f0 !important;
    color: #475569;
    text-align: center;
    cursor: default;
    user-select: none;
}
.vocab-level-report-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.65rem;
    direction: ltr;
}
.vocab-level-report-card__level {
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #B60000, #8B0000);
    border-radius: 999px;
    padding: 0.2rem 0.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 62px;
}
.vocab-level-report-card__ratio {
    font-weight: 700;
    font-size: 0.8rem;
    color: #7f1d1d;
    background: rgba(185, 28, 28, 0.14);
    border: 1px solid rgba(185, 28, 28, 0.25);
    border-radius: 999px;
    padding: 0.2rem 0.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
}
.vocab-level-report-metrics {
    display: grid;
    gap: 0.5rem;
}
.vocab-level-report-metric {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.45rem 0.5rem;
    background: #f8fafc;
}
.vocab-level-report-metric.js-vocab-level-metric {
    cursor: pointer;
}
.vocab-level-report-metric.js-vocab-level-metric:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
}
.vocab-level-report-metric__label {
    font-size: 0.82rem;
    color: #334155;
    line-height: 1.3;
}
.vocab-level-report-metric__value {
    min-width: 42px;
    min-height: 42px;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
    color: #0f172a;
    font-variant-numeric: tabular-nums;
    background: #fff;
    border: 1px solid rgba(182, 0, 0, 0.26);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55), 0 2px 7px rgba(182, 0, 0, 0.08);
}

.vocab-daily-goal-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.65rem;
    background: linear-gradient(135deg, #16a34a, #15803d);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(22, 163, 74, 0.35);
}
.vocab-daily-goal-badge i { font-size: 1.1em; }
/* ظهور هادئ: يكبر مرة واحدة بدون ارتداد أو اهتزاز */
@keyframes vocab-daily-celebrate {
    0% { transform: scale(0.92); opacity: 0.85; }
    100% { transform: scale(1); opacity: 1; }
}
.vocab-daily-goal-badge.vocab-daily-goal-celebrate {
    animation: vocab-daily-celebrate 0.4s ease-out forwards;
}
/* كونفيتي عند الوصول للهدف اليومي */
.vocab-confetti-wrap {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}
.vocab-confetti-piece {
    position: absolute;
    top: -20px;
    border-radius: 2px;
    animation: vocab-confetti-fall 2.2s ease-out forwards;
    opacity: 0.9;
}
@keyframes vocab-confetti-fall {
    0% { transform: translateY(0) rotate(0deg); opacity: 0.9; }
    100% { transform: translateY(var(--vocab-live-viewport-h, 100vh)) rotate(720deg); opacity: 0; }
}
.vocab-journey .vocab-goal-control .vocab-goal-input:disabled {
    background: #f1f5f9;
    cursor: not-allowed;
    opacity: 0.9;
}
/* الهدف الكلي + قائمة الهدف (الحالي / A1..C1): زر أكبر، مستوى + رقم */
.vocab-goal-label {
    white-space: nowrap;
    min-width: 5ch;
    font-size: 1rem;
}
.vocab-goal-select {
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    min-width: 12rem;
    font-size: 1.05rem;
    text-align: center;
}
.vocab-goal-select[dir="rtl"],
[dir="rtl"] .vocab-goal-select {
    background-position: left 0.75rem center;
    padding-left: 2.5rem;
    padding-right: 0.75rem;
}

/* ---------- تعليمات الاستخدام (مودال): خط أوضح لراحة كبار السن ---------- */
.vocabulary-usage-modal-body { font-size: 1.05rem; line-height: 1.65; }
.vocabulary-usage-modal-body .vocabulary-usage-lead { font-size: 1.15rem; font-weight: 600; color: #1e293b; margin-bottom: 0.75rem; }
.vocabulary-usage-modal-body .vocabulary-usage-steps { padding-inline-start: 1.35rem; margin-bottom: 0.5rem; }
.vocabulary-usage-modal-body .vocabulary-usage-steps li { margin-bottom: 0.5rem; }
.vocabulary-usage-modal-body .vocabulary-usage-options { list-style: none; padding-inline-start: 0; margin: 0.5rem 0 1rem; }
.vocabulary-usage-modal-body .vocabulary-usage-options li { margin-bottom: 0.6rem; padding-inline-start: 1rem; position: relative; }
.vocabulary-usage-modal-body .vocabulary-usage-options li::before { content: "•"; position: absolute; inset-inline-start: 0; font-weight: 700; color: var(--brand, #B60000); }
.vocabulary-usage-modal-body .vocabulary-usage-tip { font-size: 0.98rem; line-height: 1.6; }

/* Close button in corner for usage instructions modal */
#vocabularyUsageModal .modal-content { position: relative; }
#vocabularyUsageModal .modal-header .btn-close {
    position: absolute;
    top: 0.5rem;
    inset-inline-end: 0.5rem;
    margin: 0;
    z-index: 1;
}
#vocabularyUsageModal .modal-header { padding-inline-end: 2.5rem; }

/* Usage modal on mobile: readable, scrollable, comfortable spacing */
@media (max-width: 767px) {
    #vocabularyUsageModal.modal {
        align-items: flex-end;
        padding: 0;
    }
    #vocabularyUsageModal .modal-dialog {
        margin: 0 1rem 0 !important;
        max-width: calc(100% - 2rem) !important;
        width: 100% !important;
        height: auto !important;
        max-height: 70vh !important;
    }
    #vocabularyUsageModal .modal-content {
        max-height: 70vh !important;
        height: 70vh !important;
        border-radius: 12px 12px 0 0;
        border-bottom: none;
        display: flex !important;
        flex-direction: column !important;
    }
    #vocabularyUsageModal .modal-drag-handle {
        flex-shrink: 0;
        padding: 0.4rem 0 0.3rem;
        display: flex;
        justify-content: center;
    }
    #vocabularyUsageModal .modal-drag-handle::before {
        content: "";
        width: 40px;
        height: 4px;
        background: #cbd5e1;
        border-radius: 2px;
    }
    #vocabularyUsageModal .modal-header {
        flex-shrink: 0;
        padding: 0.5rem 1rem 0.5rem;
    }
    #vocabularyUsageModal .modal-title {
        font-size: 1.05rem;
        line-height: 1.35;
    }
    #vocabularyUsageModal .modal-body.vocabulary-usage-modal-body {
        overflow-y: auto !important;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
        flex: 1 1 0%;
        min-height: 0 !important;
        max-height: none;
        padding: 0.75rem 1rem;
        font-size: 1rem;
        line-height: 1.6;
    }
    #vocabularyUsageModal .vocabulary-usage-modal-body .vocabulary-usage-lead { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.6rem; }
    #vocabularyUsageModal .vocabulary-usage-modal-body .vocabulary-usage-steps,
    #vocabularyUsageModal .vocabulary-usage-modal-body .vocabulary-usage-options { margin-bottom: 0.5rem; }
    #vocabularyUsageModal .vocabulary-usage-modal-body .vocabulary-usage-steps li,
    #vocabularyUsageModal .vocabulary-usage-modal-body .vocabulary-usage-options li { margin-bottom: 0.5rem; }
    #vocabularyUsageModal .vocabulary-usage-modal-body .vocabulary-usage-tip { font-size: 0.95rem; margin-top: 0.6rem; line-height: 1.55; }
    #vocabularyUsageModal .modal-footer { flex-shrink: 0; padding: 0.5rem 1rem; }
}

/* Filter dropdowns */
#vocabulary-filter-form .row {
    align-items: flex-end;
    flex-wrap: wrap;
}
/* عند العرض المتوسط: كل عمود له حد أدنى للعرض فيلتف الصف لسطر جديد بدل التداخل */
#vocabulary-filter-form .row > [class*="col-"] {
    min-width: 0;
}
@media (min-width: 768px) and (max-width: 1199.98px) {
    #vocabulary-filter-form .row > [class*="col-"] {
        flex: 1 1 240px;
        min-width: 240px;
        max-width: 100%;
    }
    /* عمودا «اتجاه» و«لغة الكروت» بعرض أدنى أكبر للنصوص المترجمة */
    #vocabulary-filter-form .vocabulary-filter-col--direction,
    #vocabulary-filter-form .vocabulary-filter-col--card-lang {
        min-width: 260px;
        flex: 1 1 260px;
    }
}
#vocabulary-filter-form select.vocabulary-filter-select,
#vocabulary-filter-form .vocabulary-filter-actions .btn,
#vocabulary-filter-form .vocabulary-filter-actions button.stack-report-error-btn,
#vocabulary-filter-form .vocabulary-filter-view .btn-group,
#vocabulary-filter-form .vocabulary-table-btn {
    width: 100%;
    min-width: 0;
    max-width: 100%;
}
/* توسيط نصوص كل القوائم المنسدلة (الزر + الخيارات) في صفحة المفردات */
#vocabulary-filter-form select.vocabulary-filter-select {
    min-height: 2.5rem;
    line-height: 1.5;
    vertical-align: middle;
    text-align: center !important;
    padding-inline-start: 0.65rem !important;
    /* مساحة أوسع لجهة سهم القائمة (inline-end) — تنعكس تلقائياً في RTL */
    padding-inline-end: 2.75rem !important;
}
#vocabulary-filter-form select.vocabulary-filter-select option {
    text-align: center;
}
#vocabulary-filter-form select.vocabulary-filter-select[name="direction"],
#vocabulary-filter-form select.vocabulary-filter-select[name="card_lang"] {
    min-width: min(100%, 12.5rem);
}
/* محاذاة القوائم والأزرار: نفس الحجم ونفس المستوى من الأسفل (بداية واحدة) */
#vocabulary-filter-form.vocabulary-filter-row > [class*="col-"] {
    display: flex;
    flex-direction: column;
}
#vocabulary-filter-form.vocabulary-filter-row > [class*="col-"] > select.vocabulary-filter-select,
#vocabulary-filter-form.vocabulary-filter-row > [class*="col-"] > .btn,
#vocabulary-filter-form.vocabulary-filter-row > [class*="col-"] > button,
#vocabulary-filter-form.vocabulary-filter-row > [class*="col-"] > .btn-group {
    margin-top: auto;
}
/* قائمة Word type بنفس ارتفاع الأزرار المجاورة */
#vocabulary-filter-form select.vocabulary-filter-select[name="type"] {
    min-height: 2.5rem;
}
@media (max-width: 991.98px) {
    #vocabulary-filter-form select.vocabulary-filter-select[name="direction"] {
        min-width: 0;
    }
    /* منع تداخل الأزرار: السماح بلف النص عند العرض المتوسط */
    #vocabulary-filter-form .vocabulary-filter-actions .btn,
    #vocabulary-filter-form .vocabulary-filter-actions button.stack-report-error-btn,
    #vocabulary-filter-form .vocabulary-filter-view .btn-group .btn {
        white-space: normal;
    }
}
@media (max-width: 767.98px) {
    #vocabulary-filter-form .vocabulary-table-col {
        order: -1;
    }
    #vocabulary-filter-form .vocabulary-table-col .vocabulary-table-btn {
        justify-content: center;
    }
    /* موبايل: القوائم المنسدلة — توسيط النص وتوازن الـ padding حتى لا يُقطع النص */
    #vocabulary-filter-form select.vocabulary-filter-select {
        text-align: center !important;
        padding-inline-start: 0.75rem !important;
        padding-inline-end: 2.5rem !important;
        min-width: 0;
        width: 100%;
        font-size: 0.9rem;
    }
    #vocabulary-filter-form select.vocabulary-filter-select[name="direction"] {
        min-width: 0;
    }
    /* موبايل: أزرار الفلتر والهدف اليومي — توسيط النص وتقليل الحجم حتى لا تُقطع الكلمة */
    #vocabulary-filter-form .vocabulary-filter-actions .btn,
    #vocabulary-filter-form .vocabulary-filter-actions button.stack-report-error-btn,
    .vocabulary-index-page .vocab-daily-goal .btn {
        text-align: center !important;
        justify-content: center !important;
        min-height: 2.25rem;
        padding: 0.4rem 0.5rem;
        font-size: 0.85rem;
        white-space: normal;
        line-height: 1.25;
    }
    /* موبايل: قائمة Word type بنفس ارتفاع الأزرار */
    #vocabulary-filter-form select.vocabulary-filter-select[name="type"] {
        min-height: 2.25rem;
    }
}
/* كلمات الأزرار في المنتصف — فقط أزرار الفلتر والكروت (لا نؤثر على الـ select والقوائم المنسدلة) */
#vocabulary-filter-form .vocabulary-filter-actions .btn,
#vocabulary-filter-form .vocabulary-filter-actions button.stack-report-error-btn,
#vocabulary-filter-form .vocabulary-filter-view .btn-group .btn,
.vocabulary-index-page .stack-footer-report .btn,
.vocabulary-index-page .vocab-daily-goal .btn,
.vocabulary-index-page .stack-card .btn-flip-card,
.vocabulary-index-page .stack-see-more-inner .btn {
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
#vocabulary-filter-form .vocabulary-filter-actions .btn,
#vocabulary-filter-form .vocabulary-filter-actions button.stack-report-error-btn,
#vocabulary-filter-form .vocabulary-filter-view .btn-group .btn {
    min-height: 2.5rem;
    white-space: normal;
    gap: 0.35rem;
    word-break: break-word;
    hyphens: auto;
}
/* موبايل: إخفاء زر Report من صف الفلاتر */
@media (max-width: 767px) {
    #vocabulary-filter-form .stack-report-in-filter {
        display: none !important;
    }
}
@media (max-width: 520px) {
    .vocab-journey .journey-line { left: 40px; right: 40px; }
    .vocab-journey .journey-line-fill { left: 40px; width: calc((100% - 80px) * var(--p) / 100); }
    .vocab-journey .journey-walker { left: calc(40px + ((100% - 80px) * var(--p) / 100)); }
}


/* =========================================================
   Flashcard popup swipe zones (responsive):
   Narrower side columns + smaller hint text on tablet-width popup;
   lesson embed (#lesson-flashcards-section) matches.
   ========================================================= */
@media (min-width: 768px) and (max-width: 991.98px) {
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-outer {
        grid-template-columns: minmax(80px, 1fr) auto minmax(80px, 1fr) !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-left {
        padding-inline-start: 16px !important;
        padding-inline-end: 10px !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-right {
        padding-inline-end: 16px !important;
        padding-inline-start: 10px !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-icon {
        max-width: 90px !important;
        opacity: 0.42;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-icon small,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-left-icon .stack-zone-label-two-lines {
        max-width: 82px !important;
        font-size: 12px !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--desktop-popup-open .stack-zone-outer {
        grid-template-columns: minmax(80px, 1fr) auto minmax(80px, 1fr) !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--desktop-popup-open .stack-zone-spacer-left {
        padding-inline-start: 16px !important;
        padding-inline-end: 10px !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--desktop-popup-open .stack-zone-spacer-right {
        padding-inline-end: 16px !important;
        padding-inline-start: 10px !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--desktop-popup-open .stack-zone-icon {
        max-width: 90px !important;
        opacity: 0.42;
    }
    #lesson-flashcards-section.lesson-flashcards-section--desktop-popup-open .stack-zone-icon small,
    #lesson-flashcards-section.lesson-flashcards-section--desktop-popup-open .stack-zone-left-icon .stack-zone-label-two-lines {
        max-width: 82px !important;
        font-size: 12px !important;
    }
}
/* ===== vocabulary-card.css ===== */
/*
|--------------------------------------------------------------------------
| Vocabulary Shared Card CSS
|--------------------------------------------------------------------------
| تعليق عربي:
| هذا الملف يحتوي شكل الكروت والمحتوى المشترك:
| وجه/ظهر البطاقة، الكلمات، الجمل، التصاريف، أزرار الصوت، العلامات، والـ watermark.
| لا تضع هنا قواعد خاصة بالسحب فقط أو التصميم البسيط فقط.
| بعد أي تعديل هنا يجب تحديث page.css المجمّع.
*/

.vocabulary-index-page,
.vocab-flashcard-study-shell {
    --vocab-stack-card-drag-z: 2147483000;
}

/* Flip card container — كرت أكبر قليلاً لظهور أوضح للمقال والجمل */
.vocabulary-card-wrapper { perspective: 1000px; min-height: 380px; cursor: pointer; }
.vocabulary-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 380px;
    transition: transform 0.5s;
    transform-style: preserve-3d;
}
.vocabulary-card-wrapper.flipped .vocabulary-card-inner { transform: rotateY(180deg); }
.vocabulary-card-front,
.vocabulary-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    min-height: 380px;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.vocabulary-card-back { transform: rotateY(180deg); }

/* وجه الكرت: الكلمة في المنتصف؛ مع عربي→ألماني الجملة العربية سطر جديد وكبيرة */
.vocabulary-card-front {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* وجه الكلمة: أغمق قليلاً من ظهر المعنى */
    background: linear-gradient(145deg, #eef2f7 0%, #e2e8f0 100%);
    border: 1px solid #e2e8f0;
    padding: 1rem;
}
.vocabulary-card-front .word-de-only,
.vocabulary-card-front .word-ar-only {
    font-size: 2rem;
    font-weight: 600;
    color: #1e293b;
    text-align: center;
    padding: 0.5rem;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}
.vocabulary-card-front .front-sentence {
    display: block;
    width: 100%;
    font-size: 1.5rem;
    font-weight: 500;
    color: #334155;
    margin-top: 1rem;
    text-align: center;
    line-height: 1.45;
    padding: 0 0.5rem;
}

/* ظهر الكرت: كلمات بالمنتصف، كبيرة وواضحة، عرض احترافي */
.vocabulary-card-back {
    /* ظهر المعنى/الأمثلة: أفتح */
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.vocabulary-card-back .card-back-content {
    padding: 1rem 1.1rem 0.9rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 380px;
    justify-content: space-between;
}
.vocabulary-card-back .card-back-meta {
    flex-shrink: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}
.vocabulary-card-back .card-back-meta .badge-level {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.3rem 0.6rem;
}
/* منطقة المنتصف: الكلمات + الجمل معاً في وسط الكرت */
.vocabulary-card-back .card-back-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0.5rem 0;
    min-height: 0;
    width: 100%;
}
.vocabulary-card-back .card-back-words {
    flex-shrink: 0;
}
/* المقال der/die/das — واضح وكبير بجانب الكلمة أو فوقها */
.vocabulary-card-back .card-back-article {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.35rem;
    letter-spacing: 0.02em;
    text-transform: lowercase;
}
.vocabulary-card-back .card-back-word-de {
    font-size: 2rem;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}
.vocabulary-card-back .card-back-word-de-with-article {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    direction: ltr;
    unicode-bidi: isolate;
    align-items: baseline;
    justify-content: center;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
}
.vocabulary-card-back .card-back-word-de-with-article .card-back-article {
    margin-bottom: 0;
    font-size: 1.55rem;
}
.vocabulary-card-back .card-back-word-de-with-article .card-back-word-de {
    margin-bottom: 0;
}
.vocabulary-card-back .card-back-word-ar {
    font-size: 1.75rem;
    font-weight: 600;
    color: #b60000;
    line-height: 1.4;
    margin-bottom: 0.25rem;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}
.vocabulary-card-back .card-back-word-en {
    font-size: 1.25rem;
    font-weight: 500;
    color: #b60000;
    line-height: 1.4;
}
.vocabulary-card-back .card-back-sentence {
    flex-shrink: 0;
    padding: 0.75rem 0 0;
    margin-top: 0.5rem;
    border-top: 1px solid #e2e8f0;
    width: 100%;
    max-width: 100%;
}
/* الجمل — كبيرة وواضحة لراحة كبار السن */
.vocabulary-card-back .sentence-line {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 1.25rem;
    line-height: 1.5;
    color: #475569;
    margin-bottom: 0.35rem;
}
.vocabulary-card-back .sentence-line:last-child { margin-bottom: 0; }
.vocabulary-card-back .sentence-line strong { color: #334155; font-size: 1.25rem; }

/* تصريف الأفعال — حاضر، ماضي بسيط، ماضي تام */
.card-back-verb-forms,
.stack-card .stack-back-verb-forms {
    flex-shrink: 0;
    width: 100%;
}
/* جدول بلا حدود: صف التسميات + صف التصاريف — توفير مساحة عمودياً */
.verb-forms-table-wrap {
    width: 100%;
}
.card-back-verb-forms .verb-forms-table,
.stack-back-verb-forms .verb-forms-table {
    table-layout: fixed;
    width: 100%;
    margin-bottom: 0;
}
.card-back-verb-forms .verb-forms-table > :not(caption) > * > *,
.stack-back-verb-forms .verb-forms-table > :not(caption) > * > * {
    border: none !important;
    padding: 0.1rem 0.25rem;
    vertical-align: top;
}
.card-back-verb-forms .verb-forms-table thead th,
.stack-back-verb-forms .verb-forms-table thead th {
    font-weight: 500;
    font-size: 0.72rem;
    line-height: 1.2;
    color: #64748b;
    text-align: center;
    padding-bottom: 0.05rem;
}
.card-back-verb-forms .verb-forms-table tbody td,
.stack-back-verb-forms .verb-forms-table tbody td {
    font-weight: 600;
    font-size: 0.85rem;
    line-height: 1.25;
    color: #1e293b;
    text-align: center;
    word-wrap: break-word;
    overflow-wrap: anywhere;
}

/* أزرار الحالة — كبيرة مثل الصورة (مربعة/مستطيلة واضحة) */
.vocabulary-card-actions .actions-row {
    display: flex;
    gap: 0.4rem;
    width: 100%;
    align-items: stretch;
}
.vocabulary-card-actions .btn {
    flex: 1;
    min-height: 52px;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.5rem 0.4rem;
    border: none;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff !important;
}
.vocabulary-card-actions .btn-vocab-with-label,
.vocabulary-card-actions .btn-remind,
.vocabulary-card-actions .btn-vocab-repeat-5 {
    flex-direction: column;
    gap: 0.25rem;
    align-items: center;
    text-align: center;
    justify-content: flex-start;
    padding-top: 0.4rem;
}
/* تناظر مكان الرمز: منطقة النص تحت الرمز بارتفاع ثابت */
.vocabulary-card-actions .btn-vocab-with-label .btn-learned-label,
.vocabulary-card-actions .btn-remind .btn-remind-label,
.vocabulary-card-actions .btn-vocab-repeat-5 .btn-repeat-label {
    min-height: 2.4em;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.vocabulary-card-actions .btn-vocab-with-label .las { font-size: 1.1em; margin-inline-end: 0; flex-shrink: 0; }
.vocabulary-card-actions .btn-vocab-with-label .btn-learned-label { font-size: 0.9em; line-height: 1.25; white-space: normal; }
.vocabulary-card-actions .btn-remind .btn-remind-label { line-height: 1.2; }
.vocabulary-card-actions .btn-remind .btn-remind-times {
    font-size: 0.7rem;
    font-weight: 500;
    opacity: 0.95;
    line-height: 1.1;
}
/* صح = أخضر، خطأ = أحمر، ذكرني لاحقاً = موف */
.vocabulary-card-actions .btn-vocab-learned { background: #16a34a; color: #fff !important; }
.vocabulary-card-actions .btn-vocab-learned:hover { background: #15803d; color: #fff !important; }
.vocabulary-card-actions .btn-vocab-forgot,
.vocabulary-card-actions .btn-vocab-repeat-5 { background: #dc2626; color: #fff !important; }
.vocabulary-card-actions .btn-vocab-forgot:hover,
.vocabulary-card-actions .btn-vocab-repeat-5:hover { background: #b91c1c; color: #fff !important; }
.vocabulary-card-actions .btn-vocab-review { background: #8b5cf6; color: #fff !important; }
.vocabulary-card-actions .btn-vocab-review:hover { background: #7c3aed; color: #fff !important; }
.vocabulary-card-actions .btn-vocab-inactive { background: #e2e8f0; color: #475569 !important; }
.vocabulary-card-actions .btn-vocab-inactive:hover { background: #cbd5e1; color: #334155 !important; }
.vocabulary-card-actions .btn-remind .btn-remind-icon,
.vocabulary-card-actions .btn-vocab-repeat-5 .las { font-size: 1.1em; margin-inline-end: 0; }
.vocabulary-card-actions .btn-remind .btn-remind-times { font-size: 0.9em; }
.vocabulary-card-actions .btn-label-two-lines { display: flex; flex-direction: column; align-items: center; text-align: center; font-size: 0.9em; line-height: 1.25; }
.vocabulary-card-actions .btn-label-two-lines .btn-label-line1,
.vocabulary-card-actions .btn-label-two-lines .btn-label-line2 { display: block; }
.vocabulary-card-actions .btn-vocab-repeat-5 .btn-repeat-label,
.vocabulary-card-actions .btn-remind .btn-remind-label { white-space: normal; }


/* رسالة نهاية الصفحة في وسط منطقة الكروت */
#vocabulary-stack #stack-empty {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem;
    box-sizing: border-box;
    /* عند عدم وجود كروت: يضمن أن لوحة النهاية لا تنهار إلى ارتفاع صفر في بعض تخطيطات الفليكس */
    min-height: calc(var(--vocab-stack-card-h, 448px) + var(--vocab-stack-tail-space, 72px));
}
#vocabulary-stack #stack-empty .stack-page-done-msg {
    color: #1e293b;
}
@media (max-width: 767.98px) {
    #vocabulary-stack #stack-empty {
        inset: 0;
        z-index: 60;
        width: min(100%, var(--vocab-stack-card-w, 340px));
        min-height: min(
            calc(var(--vocab-stack-card-h, 448px) + var(--vocab-stack-tail-space, 72px)),
            calc(var(--vocab-live-viewport-h, 100vh) - 7.5rem)
        );
        max-height: calc(var(--vocab-live-viewport-h, 100vh) - 7.5rem);
        margin-inline: auto;
        justify-content: flex-start;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    #vocabulary-stack #stack-empty .stack-level-picker {
        width: 100%;
        max-width: 100%;
    }

    #vocabulary-stack #stack-empty .stack-level-picker .btn {
        min-height: 38px;
        white-space: normal;
    }
}
/* نسبة الكرت مثل ورق اللعب (عرض : ارتفاع ≈ 2.5 : 3.5) */
.stack-card {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    --stack-card-face-bg: #f2ede4;
    --stack-card-back-bg: var(--stack-card-face-bg);
    --stack-card-surface-bg: var(--stack-card-face-bg);
    --stack-card-top-zone-h: 3.15rem;
    --stack-card-bottom-zone-h: 1.85rem;
    width: 100%;
    height: var(--vocab-stack-card-h, 448px);
    min-height: var(--vocab-stack-card-h, 448px);
    border-radius: 8px;
    border: 1px solid #1a1a1a;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15), 0 1px 2px rgba(0,0,0,0.1);
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    touch-action: none;
    transition: box-shadow 0.18s ease;
    box-sizing: border-box;
    isolation: isolate;
    transform-origin: center center;
    -webkit-tap-highlight-color: transparent;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    /* Safari iOS: perspective on ancestor fixes backface-visibility on 3D flip children */
    perspective: 1400px;
    -webkit-perspective: 1400px;
}
/* touch-action غير موروث: الأبناء يورّثون none من الكرت حتى يبقى اللمس قابلاً للإلغاء على iOS. */
.stack-card * {
    touch-action: inherit;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}
/* مناطق النص داخل الكرت: على الديسكتوب pan-x/pan-y للسكرول الطبيعي. على الموبايل يُفرض touch-action: none حتى لا يخطف المتصفح الإيماءة؛ السكرول داخل الوجه/الظهر يُطبَّق يدوياً في page.js */
.stack-card .stack-back-scroll,
.stack-card .stack-front-scroll {
    touch-action: pan-x pan-y;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    contain: paint;
}
@media (max-width: 767.98px) {
    .stack-card,
    .stack-card * {
        touch-action: none;
    }
    /* يطابق التعليق أعلاه: إلغاء pan على اللمس حتى يبقى السحب على البطاقة قابلاً للإلغاء؛ السكرول = منطق JS */
    .stack-card .stack-back-scroll,
    .stack-card .stack-front-scroll {
        touch-action: none !important;
    }
}
@media (prefers-reduced-motion: no-preference) {
    .stack-card .stack-back-scroll,
    .stack-card .stack-front-scroll {
        scroll-behavior: smooth;
    }
}
.stack-card:active { cursor: grabbing; }
/* تعليق عربي: إظهار عمق بسيط فقط خلف البطاقة الحالية. */
#vocabulary-stack .stack-card.vocab-card--active {
    opacity: 1 !important;
    pointer-events: auto;
    visibility: visible !important;
    z-index: 30 !important;
}
/* تعليق عربي: البطاقة التالية يجب أن تبقى واضحة 100% ولا تكون باهتة. */
#vocabulary-stack .stack-card.vocab-card--behind-1,
#vocabulary-stack .stack-card.vocab-card--behind-2 {
    opacity: 1 !important;
    pointer-events: none;
    visibility: visible;
}
/* تعليق عربي: البطاقة الخلفية تبقى ثابتة خلف الحالية بدون تقدم للأعلى أو تكبير. */
#vocabulary-stack .stack-card.vocab-card--behind-1 {
    transform: none;
    z-index: 20 !important;
}
/* تعليق عربي: البطاقة الثانية تبقى خلفية ثابتة أيضاً بدون حركة عمق. */
#vocabulary-stack .stack-card.vocab-card--behind-2 {
    transform: none;
    z-index: 10 !important;
}
/* تعليق عربي: إخفاء كل البطاقات الأعمق حتى لا تظهر كخطوط كثيرة تحت البطاقة. */
#vocabulary-stack .stack-card.vocab-card--hidden-depth {
    opacity: 0 !important;
    pointer-events: none !important;
    visibility: hidden !important;
    transform: translate3d(0, 0, 0) scale(0.96) !important;
}
/* تعليق عربي: لا تحريك للبطاقات الخلفية عند السحب أو بعد الإفلات — فقط البطاقة النشطة/الخارجة. */
#vocabulary-stack .stack-card:not(.stack-card--dragging):not(.stack-card--exiting-front) {
    transition: none !important;
}
#vocabulary-stack .stack-card.stack-card--exiting-front {
    transition: transform 0.38s cubic-bezier(0.33, 0, 0.2, 1), opacity 0.28s ease;
}
#vocabulary-stack .stack-card.vocab-card--active.stack-card--dragging {
    opacity: 1 !important;
    visibility: visible;
    pointer-events: auto;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}
/* تعليق عربي: أثناء السحب تبقى البطاقة التالية واضحة وليست شفافة. */
.stack-drag-active #vocabulary-stack .stack-card.vocab-card--behind-1,
.stack-drag-active #vocabulary-stack .stack-card.vocab-card--behind-2 {
    opacity: 1 !important;
    visibility: visible;
}
/* تعليق عربي: منع بطاقة See more من الظهور كبطاقة خلفية تحت الكرت الحالي. */
#vocabulary-stack .stack-see-more-back:not(.vocab-card--active) {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
}
.vocab-flashcard-study-shell.stack-drag-active,
.vocabulary-stack-wrap.stack-drag-active,
.vocab-flashcard-study-shell.stack-drag-active .vocab-flashcard-study-stage,
.vocab-flashcard-study-shell.stack-drag-active .stack-zone-outer,
.vocab-flashcard-study-shell.stack-drag-active .stack-zone-center,
.vocab-flashcard-study-shell.stack-drag-active #vocabulary-stack,
.vocabulary-stack-wrap.stack-drag-active #vocabulary-stack,
.vocabulary-stack-wrap:has(.stack-card--dragging),
.vocabulary-stack-wrap:has(.stack-card--exiting-front),
.vocab-flashcard-study-shell:has(.stack-card--dragging),
.vocab-flashcard-study-shell:has(.stack-card--exiting-front),
.vocabulary-stack-wrap:has(.stack-card--dragging) .vocab-flashcard-study-stage,
.vocabulary-stack-wrap:has(.stack-card--dragging) .stack-zone-outer,
.vocabulary-stack-wrap:has(.stack-card--dragging) .stack-zone-center,
.vocabulary-stack-wrap:has(.stack-card--dragging) #vocabulary-stack,
.vocabulary-stack-wrap:has(.stack-card--exiting-front) .vocab-flashcard-study-stage,
.vocabulary-stack-wrap:has(.stack-card--exiting-front) .stack-zone-outer,
.vocabulary-stack-wrap:has(.stack-card--exiting-front) .stack-zone-center,
.vocabulary-stack-wrap:has(.stack-card--exiting-front) #vocabulary-stack {
    overflow: visible !important;
}
.stack-card.stack-card--dragging {
    z-index: 9999 !important;
    cursor: grabbing;
    will-change: transform;
    transition: none !important;
    animation: none !important;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.2), 0 7px 18px rgba(15, 23, 42, 0.12);
}
#vocabulary-stack .stack-card.stack-card--dragging .stack-card-flip {
    transition: none !important;
    animation: none !important;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-card.stack-card--dragging,
.vocabulary-index-page.vocab-mobile-expanded .stack-card.stack-card--dragging {
    z-index: 10080 !important;
}
.stack-card.stack-see-more-back {
    cursor: default;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    background: #fffef9;
    border: 1px solid #1a1a1a;
}
.stack-card.stack-see-more-back .stack-see-more-inner {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.stack-card.stack-card-removed {
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
@keyframes stack-card-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}
.stack-card.stack-card-shake { animation: stack-card-shake 0.5s ease-in-out; }

/* تعليق عربي: قلب حقيقي للبطاقة كما كان في تصميم السحب الأصلي. */
.stack-card .stack-card-flip {
    transform-style: preserve-3d !important;
    -webkit-transform-style: preserve-3d !important;
    transition: transform 0.58s cubic-bezier(0.22, 1, 0.36, 1);
}
.stack-card.flipped .stack-card-flip {
    transform: rotateY(180deg) !important;
    -webkit-transform: rotateY(180deg) !important;
}
.stack-card .stack-card-front,
.stack-card .stack-card-back {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    backface-visibility: hidden !important;
    -webkit-backface-visibility: hidden !important;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 0.55rem 0.5rem 0.45rem;
    min-height: 0;
    box-sizing: border-box;
    border-radius: 7px;
    transition:
        opacity 180ms ease,
        filter 180ms ease;
    will-change: opacity, transform;
}
.stack-card .stack-card-front {
    background: var(--stack-card-face-bg);
    pointer-events: auto;
    z-index: 2;
    opacity: 1 !important;
    visibility: visible !important;
    transform: rotateY(0deg) !important;
    -webkit-transform: rotateY(0deg) !important;
    filter: blur(0);
    transition-delay: 0s;
}
.stack-card .stack-card-back {
    background: var(--stack-card-back-bg);
    pointer-events: none;
    z-index: 1;
    opacity: 1 !important;
    visibility: visible !important;
    transform: rotateY(180deg) !important;
    -webkit-transform: rotateY(180deg) !important;
    filter: none;
}
.stack-card.flipped .stack-card-front {
    pointer-events: none;
    z-index: 1;
    opacity: 1 !important;
    visibility: visible !important;
    filter: none;
}
.stack-card.flipped .stack-card-back {
    pointer-events: auto;
    z-index: 2;
    opacity: 1 !important;
    visibility: visible !important;
    filter: blur(0);
    transition-delay: 0s;
}
@media (prefers-reduced-motion: reduce) {
    #vocabulary-stack .stack-card .stack-card-front,
    #vocabulary-stack .stack-card .stack-card-back,
    #vocabulary-stack .stack-card.vocab-card--active {
        transition: none !important;
        animation: none !important;
    }
}
/* =========================================================
   Stack card safe flip sequence — إحساس قلب بدون rotateY
   ========================================================= */
/* تعليق عربي: أثناء تبديل الوجه نسمح بتحريك حاوية الوجهين رغم أن rotateY متوقف. */
#vocabulary-stack .stack-card.stack-card--face-switching .stack-card-flip {
    transform-origin: center center;
    will-change: transform, opacity, filter;
}
/* تعليق عربي: المرحلة الأولى — ضغط البطاقة حتى تصبح كأنها تنقلب. */
#vocabulary-stack .stack-card.stack-card--face-exit .stack-card-flip {
    transform: scaleX(0.08) scaleY(1.015) !important;
    -webkit-transform: scaleX(0.08) scaleY(1.015) !important;
    filter: brightness(0.98);
    transition:
        transform 130ms cubic-bezier(0.4, 0, 0.2, 1),
        filter 130ms ease !important;
}
/* تعليق عربي: المرحلة الثانية — فتح البطاقة بعد تبديل الوجه. */
#vocabulary-stack .stack-card.stack-card--face-enter .stack-card-flip {
    animation: vocab-safe-face-enter 170ms cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes vocab-safe-face-enter {
    0% {
        transform: scaleX(0.08) scaleY(1.015);
        filter: brightness(0.98);
    }
    70% {
        transform: scaleX(1.025) scaleY(0.995);
        filter: brightness(1);
    }
    100% {
        transform: scaleX(1) scaleY(1);
        filter: none;
    }
}
/* تعليق عربي: أثناء حركة القلب لا نريد أن تتداخل حركة الوجوه مع حركة ضغط البطاقة. */
#vocabulary-stack .stack-card.stack-card--face-switching .stack-card-front,
#vocabulary-stack .stack-card.stack-card--face-switching .stack-card-back {
    transition: none !important;
}
/* تعليق عربي: دعم من يفضل تقليل الحركة. */
@media (prefers-reduced-motion: reduce) {
    #vocabulary-stack .stack-card.stack-card--face-exit .stack-card-flip,
    #vocabulary-stack .stack-card.stack-card--face-enter .stack-card-flip {
        animation: none !important;
        transition: none !important;
        transform: none !important;
        -webkit-transform: none !important;
        filter: none !important;
    }
}
/* المستوى في الزاوية اليسارية العليا — كبير على الوجهين */
.card-level-corner {
    position: absolute;
    top: 0.75rem;
    left: 0.7rem;
    right: auto;
    font-size: 1.65rem;
    font-weight: 800;
    line-height: 1;
    color: #1a1a1a;
    letter-spacing: 0.02em;
    pointer-events: none;
    z-index: 2;
    max-width: 42%;
    text-align: start;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0.5px);
    -webkit-transform: translateZ(0.5px);
}
[dir="rtl"] .card-level-corner {
    left: auto;
    right: 0.7rem;
    text-align: end;
}
/* شارة نوع البطاقة (جديدة / مراجعة) + تفاصيل التقدم */
.card-corner-meta {
    position: absolute;
    top: 0.65rem;
    right: 0.65rem;
    left: auto;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.2rem;
    max-width: 58%;
    pointer-events: none;
}
[dir="rtl"] .card-corner-meta {
    right: auto;
    left: 0.65rem;
    align-items: flex-start;
}
.vocabulary-stack-wrap[dir="ltr"] .stack-card .card-corner-meta {
    right: 0.65rem;
    left: auto;
    align-items: flex-end;
}
.card-type-badge {
    display: inline-block;
    padding: 0.12rem 0.45rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0.01em;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
}
.card-type-badge--new {
    color: #14532d;
    background: #bbf7d0;
    border: 1px solid #4ade80;
}
.card-type-badge--review {
    color: #713f12;
    background: #fef08a;
    border: 1px solid #facc15;
}
.card-corner-meta .card-seen-corner {
    position: static;
    top: auto;
    right: auto;
    left: auto;
    max-width: 100%;
    font-size: 0.72rem;
    font-weight: 600;
    color: #64748b;
    text-align: inherit;
    transform: none;
    -webkit-transform: none;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
}
/* زاوية ظهور الكلمة: جديدة أو مرات الظهور (يمين أعلى) */
.card-seen-corner {
    position: absolute;
    top: 0.75rem;
    right: 0.7rem;
    left: auto;
    font-size: 0.8rem;
    font-weight: 600;
    line-height: 1.2;
    color: #64748b;
    pointer-events: none;
    z-index: 2;
    max-width: 54%;
    text-align: end;
    white-space: normal;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow-wrap: anywhere;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0.5px);
    -webkit-transform: translateZ(0.5px);
}
[dir="rtl"] .card-seen-corner {
    right: auto;
    left: 0.7rem;
    text-align: start;
}
/* في Stack (المثبت dir=ltr) نثبّت المستوى يسار والحالة يمين دائمًا على الوجهين. */
.vocabulary-stack-wrap[dir="ltr"] .stack-card .card-level-corner {
    left: 0.7rem;
    right: auto;
    text-align: start;
}
.vocabulary-stack-wrap[dir="ltr"] .stack-card .card-seen-corner {
    right: 0.7rem;
    left: auto;
    text-align: end;
}
/* منطقة الكلمات في منتصف الوجه (تأخذ المساحة المتبقية؛ سكرول عند طول النص) */
.stack-card .stack-card-front-words {
    flex: 1;
    min-height: 0;
    width: 100%;
}
.stack-due-review-inline-notice {
    border: 1px solid rgba(13, 110, 253, 0.24);
    background: rgba(13, 110, 253, 0.1);
    color: #1f2937;
    border-radius: 10px;
    padding: 0.45rem 0.55rem;
    margin-bottom: 0.45rem;
}
.stack-due-review-inline-notice__text {
    display: block;
    font-size: 0.82rem;
    line-height: 1.4;
    color: #0f172a;
}
.stack-due-review-inline-notice__ok {
    margin-top: 0.35rem;
    padding: 0.15rem 0.55rem;
    font-size: 0.76rem;
    line-height: 1.2;
}
/* الكلمة في منتصف الكرت — خط كبير؛ إذا انقسمت لسطرين تظهر واصلة */
.stack-card .stack-card-front .word-de-only,
.stack-card .stack-card-front .word-ar-only {
    font-size: clamp(1.35rem, 4.2vw, 2rem);
    font-weight: 600;
    color: #1e293b;
    text-align: center;
    width: 100%;
    max-width: 100%;
    padding: 0.2rem 0;
    line-height: 1.35;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    overflow-wrap: anywhere;
}
.stack-card .stack-card-front .front-sentence {
    display: block;
    width: 100%;
    max-width: 100%;
    font-size: clamp(1.05rem, 3.2vw, 1.45rem);
    font-weight: 500;
    color: #334155;
    margin-top: 0.65rem;
    text-align: center;
    line-height: 1.5;
    padding: 0;
    overflow-wrap: anywhere;
}
/* منطقة Flip card — مثل كرت ورق: نفس لون الوجه + خط رفيع */
.stack-card-flip-hint {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 0.45rem 0.5rem 0.42rem;
    width: 100%;
    text-align: center;
    background: var(--stack-card-surface-bg);
    border-top: 1px solid rgba(26, 26, 26, 0.35);
    border-radius: 0 0 7px 7px;
    z-index: 1;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateZ(0.5px);
    -webkit-transform: translateZ(0.5px);
}
.stack-card-flip-hint .btn-flip-card {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    background: transparent;
    border: none;
    cursor: pointer;
    pointer-events: none;
    user-select: none;
}
.stack-card-flip-hint .btn-flip-card i { font-size: 1.15rem; color: #1a1a1a; }
/* إخفاء "اقلب البطاقة" إلا على أول بطاقة؛ بعد التقدم تُخفى نهائياً */
.stack-card:not(.stack-card--first-only) .stack-card-flip-hint { display: none; }
.vocabulary-stack.stack-flip-hint-dismissed .stack-card-flip-hint { display: none !important; }

.vocab-reset-quick-modal .modal-content {
    border: 1px solid rgba(220, 53, 69, 0.2);
    border-top: 4px solid #dc3545;
    border-radius: 0.9rem;
    box-shadow: 0 0.9rem 2rem rgba(17, 24, 39, 0.15);
}

.vocab-reset-quick-modal .modal-header {
    border-bottom: 1px solid rgba(220, 53, 69, 0.12);
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.08), rgba(255, 255, 255, 0.95));
}

.vocab-reset-quick-modal__icon {
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(220, 53, 69, 0.12);
    color: #b02a37;
    font-size: 1rem;
}

.vocab-reset-quick-modal__message {
    color: #374151;
    line-height: 1.75;
    font-weight: 500;
}

.vocab-reset-quick-modal__levels {
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: 0.6rem;
    max-height: 190px;
    overflow: auto;
    padding: 0.4rem 0.45rem;
    background: #fff;
}

.vocab-reset-quick-modal__level-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-radius: 0.45rem;
    padding: 0.3rem 0.4rem;
}

.vocab-reset-quick-modal__level-item:hover {
    background: rgba(220, 53, 69, 0.06);
}

.vocab-reset-quick-modal__level-item .form-check-label {
    cursor: pointer;
    font-weight: 600;
    color: #1f2937;
}
/* صف كلمة أو جملة مع زر نطق (وجه/ظهر الكرت — ألماني، عربي، إنجليزي) */
.stack-card-line-with-speech,
.vocab-card-line-with-speech {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    margin-top: 0.35rem;
}
.stack-card-line-with-speech:first-child,
.vocab-card-line-with-speech:first-child { margin-top: 0; }
.stack-card .stack-card-front-words .stack-card-line-with-speech {
    justify-content: center;
}
/* صف ألماني + زر نطق: شبكة لتفادي الهدر الأفقي */
.stack-card .stack-card-line-de-speech {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.35rem 0.4rem;
    align-items: start;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    margin-top: 0.4rem;
}
.stack-card .stack-card-line-de-speech:first-child { margin-top: 0; }
.stack-card .stack-de-lemma-wrap,
.vocabulary-card-back .stack-de-lemma-wrap,
.vocab-card-line-with-speech .stack-de-lemma-wrap {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    direction: ltr;
    unicode-bidi: isolate;
    align-items: baseline;
    justify-content: center;
    gap: 0.35rem 0.5rem;
    min-width: 0;
    text-align: center;
}
.vocab-card-line-with-speech.card-back-word-de-with-article .stack-de-lemma-wrap {
    flex: 1 1 auto;
    min-width: 0;
    justify-content: center;
}
.stack-card .stack-card-line-de-speech .sentence-line {
    text-align: start;
    margin: 0;
}
.stack-card .stack-card-line-de-speech > p.sentence-line {
    width: 100%;
    min-width: 0;
}
.stack-card .stack-back-sentence .stack-back-text-line + .stack-back-text-line,
.stack-card .stack-back-sentence .stack-card-line-de-speech + .stack-back-text-line,
.stack-card .stack-back-sentence .stack-back-text-line + .stack-card-line-de-speech {
    margin-top: 0.35rem;
}
.stack-card .stack-front-text-cell {
    min-width: 0;
    width: 100%;
    text-align: center;
    justify-self: stretch;
    align-self: center;
}
.stack-card .stack-card-line-de-speech > .card-back-word-de {
    justify-self: center;
    text-align: center;
    width: 100%;
    max-width: 100%;
    display: block;
}
.stack-card .stack-back-text-line {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    margin-top: 0.35rem;
    padding: 0 0.1rem;
    overflow-wrap: anywhere;
    word-break: normal;
}
.stack-card .stack-back-text-line:first-child { margin-top: 0; }
.stack-card .stack-front-translation-slot {
    width: 100%;
}
.stack-card .stack-front-translation-placeholder {
    visibility: hidden;
    pointer-events: none;
    user-select: none;
}
.stack-card .stack-front-audio-placeholder,
.stack-card .stack-front-footer-placeholder {
    visibility: hidden;
    pointer-events: none;
    user-select: none;
}
.stack-card-line-with-speech .word-de-only,
.stack-card-line-with-speech .word-ar-only,
.stack-card-line-with-speech .front-sentence,
.stack-card-line-with-speech .card-back-word-de,
.stack-card-line-with-speech .card-back-word-ar,
.stack-card-line-with-speech .card-back-word-en,
.stack-card-line-with-speech .sentence-line,
.vocab-card-line-with-speech .word-de-only,
.vocab-card-line-with-speech .word-ar-only,
.vocab-card-line-with-speech .front-sentence,
.vocab-card-line-with-speech .card-back-word-de,
.vocab-card-line-with-speech .card-back-word-ar,
.vocab-card-line-with-speech .card-back-word-en,
.vocab-card-line-with-speech .sentence-line {
    flex: 1;
    min-width: 0;
    margin: 0;
}
.vocabulary-card-front .vocab-card-line-with-speech,
.vocabulary-card-back .card-back-words .vocab-card-line-with-speech,
.vocabulary-card-back .card-back-sentence .vocab-card-line-with-speech {
    justify-content: center;
}
/* زر النطق: منطقة لمس لا تقل عن 44px لسهولة الضغط (أصابع كبيرة أو لمس) — لون محايد متناسق مع خلفية الكرت (لا أزرق) */
.vocabulary-list .vocab-speech-btn,
.vocabulary-list .wotd-speech-btn.vocab-speech-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 0.35rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.06) !important;
    border: 1px solid rgba(0, 0, 0, 0.12) !important;
    border-radius: 50%;
    box-shadow: none !important;
    color: #444 !important;
}
.vocabulary-list .vocab-speech-btn:hover,
.vocabulary-list .wotd-speech-btn.vocab-speech-btn:hover {
    background: rgba(0, 0, 0, 0.1) !important;
    border-color: rgba(0, 0, 0, 0.18) !important;
    color: #1a1a1a !important;
}
.vocabulary-list .vocab-speech-btn.playing,
.vocabulary-list .wotd-speech-btn.vocab-speech-btn.playing {
    background: rgba(0, 0, 0, 0.12) !important;
    border-color: rgba(0, 0, 0, 0.2) !important;
}
.vocabulary-list .vocab-speech-btn .las {
    font-size: 1.25rem;
    line-height: 1;
}
/* كومة السحب: أزرار أصغر لتوفير عرض دون المساس بقابلية اللمس */
.stack-card .vocab-speech-btn,
.stack-card .wotd-speech-btn.vocab-speech-btn {
    min-width: 36px;
    min-height: 36px;
    padding: 0.22rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.06) !important;
    border: 1px solid rgba(0, 0, 0, 0.12) !important;
    border-radius: 50%;
    box-shadow: none !important;
    color: #444 !important;
}
.stack-card .vocab-speech-btn:hover,
.stack-card .wotd-speech-btn.vocab-speech-btn:hover {
    background: rgba(0, 0, 0, 0.1) !important;
    border-color: rgba(0, 0, 0, 0.18) !important;
    color: #1a1a1a !important;
}
.stack-card .vocab-speech-btn.playing,
.stack-card .wotd-speech-btn.vocab-speech-btn.playing {
    background: rgba(0, 0, 0, 0.12) !important;
    border-color: rgba(0, 0, 0, 0.2) !important;
}
.stack-card .vocab-speech-btn .las {
    font-size: 1.02rem;
    line-height: 1;
}
/* تذييل المكدس: أزرار بألوان الهوية (#B60000) — انظر `.btn-report-error-outside` */
.stack-footer-report { min-height: 2rem; position: relative; z-index: 5; }
.stack-focus-backdrop[hidden] { display: none !important; }
.vocab-flashcard-study-stage {
    position: relative;
    z-index: 20;
    overscroll-behavior: contain;
}
.stack-undo-btn { display: inline-flex; align-items: center; gap: 0.35rem; font-weight: 500; opacity: 0.92; }
.stack-undo-btn:hover:not(:disabled) { opacity: 1; }
.stack-undo-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.stack-expand-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    font-weight: 600;
    white-space: normal;
}
.stack-expand-btn .stack-expand-btn__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.stack-expand-btn .stack-expand-btn__label {
    display: inline-block;
    line-height: 1.15;
}
.stack-expand-btn.is-expanded {
    color: #B60000 !important;
    background: #fff !important;
    border-color: #B60000 !important;
}
.stack-expand-btn.is-expanded:hover:not(:disabled) {
    background: rgba(182, 0, 0, 0.06) !important;
}
/* Expand control: brand red when offering expand (collapsed mode) */
.vocabulary-index-page #stack-expand-btn:not(.is-expanded),
.vocabulary-index-page .vocab-stack-expand-below-wrap .stack-expand-btn:not(.is-expanded),
.vocabulary-index-page .vocab-stack-expand-footer-wrap .stack-expand-btn:not(.is-expanded) {
    border-color: #B60000 !important;
    background: #B60000 !important;
    color: #fff !important;
}
.vocabulary-index-page #stack-expand-btn:not(.is-expanded):hover:not(:disabled),
.vocabulary-index-page #stack-expand-btn:not(.is-expanded):focus-visible:not(:disabled),
.vocabulary-index-page .vocab-stack-expand-below-wrap .stack-expand-btn:not(.is-expanded):hover:not(:disabled),
.vocabulary-index-page .vocab-stack-expand-below-wrap .stack-expand-btn:not(.is-expanded):focus-visible:not(:disabled),
.vocabulary-index-page .vocab-stack-expand-footer-wrap .stack-expand-btn:not(.is-expanded):hover:not(:disabled),
.vocabulary-index-page .vocab-stack-expand-footer-wrap .stack-expand-btn:not(.is-expanded):focus-visible:not(:disabled) {
    filter: brightness(0.95);
}

.vocab-stack-expand-below-wrap {
    position: absolute;
    top: var(--vocab-stack-card-h, 448px);
    left: 0;
    right: 0;
    z-index: 35;
    display: flex;
    justify-content: center;
    margin: 0;
    transform: none;
    width: 100%;
}

.vocab-stack-actions-chrome {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
    max-width: var(--vocab-stack-card-w, 340px);
    margin: 0.35rem auto 0;
    position: relative;
    z-index: 5;
}

.vocabulary-index-page .vocab-stack-actions-chrome .stack-footer-report {
    margin-top: 0 !important;
}

.vocab-stack-expand-footer-wrap {
    position: static;
    top: auto;
    left: auto;
    right: auto;
    z-index: auto;
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    direction: ltr;
    position: relative;
    gap: 0.35rem;
    padding: 0.25rem;
    border: 1px solid rgba(182, 0, 0, 0.16);
    border-radius: 999px;
    background: rgba(182, 0, 0, 0.05);
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings-single {
    grid-template-columns: minmax(0, 1fr);
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings .vocab-stack-expand-footer-wrap,
.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings .tts-speed-control {
    width: 100%;
    min-width: 0;
    position: relative;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings .stack-expand-btn,
.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings .vocab-study-mode-toggle__expand {
    width: 100% !important;
    min-height: auto !important;
    margin: 0;
    box-shadow: none;
}

/* علامة مائية براند مثل التقرير — خط مزخرف (Unicode script) */
.card-brand-watermark {
    position: absolute;
    bottom: 0.42rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, "Times New Roman", serif;
    font-weight: 900;
    font-size: 0.68rem;
    letter-spacing: 0.5px;
    color: #2d2a26;
    opacity: 0.2;
    pointer-events: none;
    white-space: nowrap;
    text-shadow: 0 1px 0 rgba(255,255,255,0.6), 0 6px 14px rgba(182,0,0,0.12);
}
.stack-card .card-brand-watermark {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translateX(-50%) translateZ(0.5px);
    -webkit-transform: translateX(-50%) translateZ(0.5px);
}
.stack-card.card-layout--centered .stack-card-front-words,
.stack-card.card-layout--centered .stack-back-scroll {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.stack-card.card-layout--compact {
    --stack-card-top-zone-h: 2.95rem;
    --stack-card-bottom-zone-h: 1.2rem;
}
.stack-card.card-layout--compact .stack-card-front,
.stack-card.card-layout--compact .stack-card-back {
    padding: 0.42rem 0.34rem 0.28rem;
}
.stack-card.card-layout--compact .stack-card-front-words,
.stack-card.card-layout--compact .stack-back-scroll {
    justify-content: flex-start;
}
.stack-card.card-layout--compact .stack-back-body {
    gap: 0.1rem;
}
/* compact + back-centered: flex needed (centered rule does not apply when compact) */
.stack-card.card-layout--compact.card-layout--back-centered .stack-back-scroll {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.stack-card.card-layout--compact .stack-back-footer {
    margin-top: 0.1rem;
}
.stack-card.card-layout--compact .stack-card-flip-hint {
    padding-top: 0.4rem;
    padding-bottom: 0.35rem;
}
.stack-card.card-layout--compact .card-brand-watermark {
    opacity: 0.16;
}
.stack-card .stack-back-words {
    width: 100%;
    text-align: center;
    overflow-wrap: anywhere;
    word-break: normal;
}
.stack-card .stack-card-front-words,
.stack-card .stack-back-sentence {
    overflow-wrap: anywhere;
    word-break: normal;
}
.stack-card .stack-front-lemma-block,
.stack-card .stack-front-text-cell {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: center;
    gap: 0.15rem;
    min-width: 0;
    text-align: center;
}
.stack-card .stack-de-lemma-wrap {
    display: inline-flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: center;
    gap: 0.2rem;
}
.stack-card .card-back-plural {
    display: inline;
    margin-top: 0;
    font-size: inherit;
    font-weight: 600;
    line-height: inherit;
    color: #64748b;
}
.stack-card .card-back-plural__sep {
    margin-inline: 0.12em;
    color: #94a3b8;
    font-weight: 600;
}
.stack-card .card-back-plural__label {
    display: none;
}
.stack-card .card-back-plural__value {
    color: #475569;
    font-weight: 600;
}
.stack-card .stack-back-words .card-back-word-de {
    font-size: clamp(1.35rem, 4vw, 1.95rem);
    font-weight: 700;
    color: #0f172a;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    margin-bottom: 0;
    line-height: 1.35;
    letter-spacing: -0.02em;
    overflow-wrap: anywhere;
}
.stack-card .stack-de-lemma-wrap .card-back-word-de,
.vocabulary-card-back .stack-de-lemma-wrap .card-back-word-de,
.vocab-card-line-with-speech .stack-de-lemma-wrap .card-back-word-de {
    display: inline;
}
.stack-card .stack-back-words .card-back-article,
.stack-card .stack-card-front-words .card-back-article {
    font-size: clamp(1.15rem, 3.2vw, 1.45rem);
    font-weight: 700;
    color: #0f172a;
    letter-spacing: 0.02em;
    text-transform: lowercase;
}
.stack-card .stack-back-words .card-back-word-ar {
    font-size: clamp(1.15rem, 3.5vw, 1.65rem);
    font-weight: 600;
    color: #b60000;
    line-height: 1.45;
    margin-top: 0.25rem;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}
.stack-card .stack-back-words .card-back-word-en {
    font-size: clamp(1rem, 2.8vw, 1.2rem);
    font-weight: 500;
    color: #b60000;
    line-height: 1.45;
    margin-top: 0.2rem;
    overflow-wrap: anywhere;
}
.stack-card .stack-back-sentence {
    margin-top: 0.45rem;
    padding-top: 0.4rem;
    border-top: 1px solid #e2e8f0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}
.stack-card .stack-back-sentence .sentence-line {
    font-size: clamp(1.05rem, 3vw, 1.2rem);
    line-height: 1.5;
    color: #334155;
    overflow-wrap: anywhere;
}
.stack-card .stack-back-sentence .stack-back-text-line {
    color: #b60000;
}
.stack-card .stack-back-sentence .sentence-line strong {
    font-weight: 700;
    font-size: inherit;
}
.stack-card .stack-back-verb-forms {
    margin-top: 0 !important;
    padding-top: 0.35rem !important;
    border-top: none !important;
}
/* عمود Perfekt أوسع عند وجود ثلاثة أعمدة فقط */
.stack-back-verb-forms .verb-forms-table thead th:nth-child(3),
.stack-back-verb-forms .verb-forms-table tbody td:nth-child(3) {
    width: 42%;
}

/* عرض الشبكة: نفس خلفية بطاقة السحب + قلب مسطح لإظهار الترجمة */
#vocabulary-grid-wrap .vocabulary-card-wrapper {
    --stack-card-face-bg: #f2ede4;
    --stack-card-back-bg: var(--stack-card-face-bg);
}

#vocabulary-grid-wrap .vocabulary-card-front {
    background: var(--stack-card-face-bg, #f2ede4);
    border: 1px solid #1a1a1a;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.1);
}

#vocabulary-grid-wrap .vocabulary-card-back {
    background: var(--stack-card-back-bg, #f2ede4);
    border: 1px solid #1a1a1a;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.1);
}

#vocabulary-grid-wrap .vocabulary-card-back .card-back-word-ar,
#vocabulary-grid-wrap .vocabulary-card-back .card-back-word-en {
    font-weight: 600;
    color: #b60000;
}

.vocabulary-card-wrapper.vocabulary-card--flat-flip .vocabulary-card-inner,
.vocabulary-card-wrapper.vocabulary-card--flat-flip.flipped .vocabulary-card-inner {
    transform: none !important;
    -webkit-transform: none !important;
    transform-style: flat !important;
    -webkit-transform-style: flat !important;
    transition: none;
}

.vocabulary-card-wrapper.vocabulary-card--flat-flip .vocabulary-card-front,
.vocabulary-card-wrapper.vocabulary-card--flat-flip .vocabulary-card-back {
    transform-origin: center center;
    -webkit-transform-origin: center center;
    backface-visibility: visible !important;
    -webkit-backface-visibility: visible !important;
    transition: opacity 0.2s ease, transform 0.26s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.vocabulary-card-wrapper.vocabulary-card--flat-flip .vocabulary-card-front {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    -webkit-transform: none !important;
    pointer-events: auto !important;
    z-index: 2;
}

.vocabulary-card-wrapper.vocabulary-card--flat-flip .vocabulary-card-back {
    opacity: 0 !important;
    visibility: hidden !important;
    transform: none !important;
    -webkit-transform: none !important;
    pointer-events: none !important;
    z-index: 1;
}

.vocabulary-card-wrapper.vocabulary-card--flat-flip.flipped .vocabulary-card-front {
    opacity: 0 !important;
    visibility: hidden !important;
    transform: none !important;
    -webkit-transform: none !important;
    pointer-events: none !important;
    z-index: 1;
}

.vocabulary-card-wrapper.vocabulary-card--flat-flip.flipped .vocabulary-card-back {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    -webkit-transform: none !important;
    pointer-events: auto !important;
    z-index: 2;
}

/* عرض الشبكة: إبقاء النص داخل البطاقة */
#vocabulary-grid-wrap .vocabulary-card-wrapper,
#vocabulary-grid-wrap .vocabulary-card-inner,
#vocabulary-grid-wrap .vocabulary-card-front,
#vocabulary-grid-wrap .vocabulary-card-back {
    overflow: hidden;
}

#vocabulary-grid-wrap .vocabulary-card-front,
#vocabulary-grid-wrap .vocabulary-card-back {
    padding-top: 2.2rem;
}

#vocabulary-grid-wrap .vocabulary-card-back .card-back-content {
    min-height: 0;
    height: 100%;
    overflow: hidden;
    justify-content: flex-start;
    padding-bottom: 0.55rem;
}

#vocabulary-grid-wrap .vocabulary-card-back .card-back-center {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    align-items: center;
    padding: 0.15rem 0 0.35rem;
    scrollbar-gutter: stable;
}

#vocabulary-grid-wrap .vocabulary-card-back .vocabulary-card-actions {
    flex: 0 0 auto;
    flex-shrink: 0;
    width: 100%;
    margin-top: auto;
    position: relative;
    z-index: 3;
    background: var(--stack-card-back-bg, #f2ede4);
    box-shadow: 0 -10px 14px rgba(242, 237, 228, 0.96);
}

#vocabulary-grid-wrap .vocabulary-card-front .word-de-only,
#vocabulary-grid-wrap .vocabulary-card-front .word-ar-only,
#vocabulary-grid-wrap .vocabulary-card-back .card-back-word-de,
#vocabulary-grid-wrap .vocabulary-card-back .card-back-word-ar,
#vocabulary-grid-wrap .vocabulary-card-back .card-back-word-en,
#vocabulary-grid-wrap .vocabulary-card-back .card-back-article {
    box-sizing: border-box;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
    font-size: clamp(0.95rem, 2.35vw, 1.55rem);
    line-height: 1.22;
    padding-left: 0.2rem;
    padding-right: 0.2rem;
}

#vocabulary-grid-wrap .vocabulary-card-front .front-sentence,
#vocabulary-grid-wrap .vocabulary-card-back .sentence-line {
    box-sizing: border-box;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
    font-size: clamp(0.82rem, 1.85vw, 1.05rem);
    line-height: 1.32;
}

#vocabulary-grid-wrap .vocab-card-line-with-speech,
#vocabulary-grid-wrap .card-back-word-de-with-article {
    max-width: 100%;
}

#vocabulary-grid-wrap .vocab-card-line-with-speech {
    flex-wrap: wrap;
    justify-content: center;
}

#vocabulary-grid-wrap .vocabulary-card-back .card-back-sentence {
    margin-top: 0.35rem;
    padding-top: 0.5rem;
}

#vocabulary-grid-wrap .vocabulary-card-back .card-back-content {
    padding-inline: 0.85rem;
}

#vocabulary-grid-wrap .vocab-speech-btn,
#vocabulary-grid-wrap .wotd-speech-btn.vocab-speech-btn {
    width: 38px !important;
    height: 38px !important;
    min-width: 38px !important;
    min-height: 38px !important;
}

#vocabulary-grid-wrap .vocabulary-card-actions .btn {
    min-height: 46px;
    font-size: 0.84rem;
    padding: 0.4rem 0.32rem;
}

#vocabulary-grid-wrap .vocabulary-card-actions .btn-label-two-lines,
#vocabulary-grid-wrap .vocabulary-card-actions .btn-vocab-with-label .btn-learned-label {
    font-size: 0.82em;
}

.vocabulary-grid-toolbar .stack-undo-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* عرض الشبكة: ديسكتوب — إخفاء البطاقة المُجاب عنها مع الإبقاء على مكانها في الشبكة */
@media (min-width: 768px) {
    #vocabulary-grid-wrap .vocabulary-grid-col.vocabulary-grid-card-answered {
        visibility: hidden;
        pointer-events: none;
    }

    #vocabulary-grid-wrap .vocabulary-grid-col.vocabulary-grid-card-answered .vocabulary-card-wrapper {
        opacity: 0;
    }
}

/* عرض الشبكة: موبايل — إزالة البطاقة من التدفق (السلوك السابق) */
@media (max-width: 767.98px) {
    #vocabulary-grid-wrap .vocabulary-grid-col.vocabulary-grid-card-answered {
        display: none !important;
    }
}
/* ===== vocabulary-swipe.css ===== */
/*
|--------------------------------------------------------------------------
| Vocabulary Swipe CSS
|--------------------------------------------------------------------------
| تعليق عربي:
| هذا الملف خاص بتصميم السحب والـ stack:
| مناطق السحب، عمق الكروت، drag states، focus mode، popup، و mobile expanded.
| لا تضع هنا قواعد التصميم البسيط إلا إذا كانت مشتركة فعلًا.
| بعد أي تعديل هنا يجب تحديث page.css المجمّع.
*/

html.vocab-swipe-dragging,
html.vocab-swipe-dragging * {
    -webkit-user-select: none !important;
    user-select: none !important;
}

html.vocab-page-scroll-locked,
html.vocab-swipe-dragging {
    overscroll-behavior: none;
}

html.vocab-page-scroll-locked body {
    overscroll-behavior: none;
    touch-action: none;
}

/* Stack view: كروت ورا بعض — نسبة ورق لعب (كروت الشدة) منطقية */
.vocab-flashcard-study-shell {
    width: 100%;
    max-width: 100%;
}
.vocabulary-index-page .vocabulary-stack-wrap {
    align-items: center;
    width: 100%;
    max-width: 100%;
}
.vocab-flashcard-study-stage {
    width: 100%;
    max-width: 100%;
}
.vocabulary-index-page .vocab-flashcard-study-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.stack-zone-center {
    flex: 1 1 auto;
    min-width: 0;
    width: min(var(--vocab-stack-card-w, 340px), 100%);
    max-width: min(var(--vocab-stack-card-w, 340px), 100%);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    position: relative;
    margin-inline: auto;
}
.vocabulary-stack {
    position: relative;
    width: min(var(--vocab-stack-card-w, 340px), 100%);
    min-width: 0;
    max-width: min(var(--vocab-stack-card-w, 340px), 100%);
    margin-inline: auto;
    min-height: calc(var(--vocab-stack-card-h, 448px) + var(--vocab-stack-tail-space, 72px));
    /* pan-y هنا يجعل Chrome يحجز اللمس فيصبح touchstart/touchmove غير قابلين لـ preventDefault ويكسر السحب */
    touch-action: none;
    overflow: visible;
}
/* شريطان جانبيان للسحب: يسهلان السحب بدون لمس محتوى البطاقة */
.stack-swipe-strip {
    position: absolute;
    top: 8px;
    bottom: 8px;
    width: 74px;
    z-index: 0;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}
.stack-swipe-strip-left { left: 4px; }
.stack-swipe-strip-right { right: 4px; }
.stack-swipe-strip__inner {
    pointer-events: none;
    font-size: 0.8rem;
    font-weight: 700;
    color: rgba(15, 23, 42, 0.45);
    border: 1px dashed rgba(148, 163, 184, 0.45);
    background: rgba(255, 255, 255, 0.42);
    border-radius: 999px;
    padding: 0.22rem 0.55rem;
    line-height: 1;
}

/* خربطة الكروت: تتباعد ثم ترجع بانسيابية */
@keyframes stack-card-shuffle {
    0% { transform: translate(0, 0) rotate(0deg); z-index: 1; }
    32% { transform: translate(var(--shuffle-x, 0), var(--shuffle-y, 0)) rotate(var(--shuffle-r, 0deg)); z-index: var(--shuffle-z, 1); }
    45% { transform: translate(var(--shuffle-x, 0), var(--shuffle-y, 0)) rotate(var(--shuffle-r, 0deg)); z-index: var(--shuffle-z, 1); }
    60% { transform: translate(calc(var(--shuffle-x, 0) * 0.6), calc(var(--shuffle-y, 0) * 0.6)) rotate(calc(var(--shuffle-r, 0deg) * 0.6)); z-index: var(--shuffle-z, 1); }
    75% { transform: translate(calc(var(--shuffle-x, 0) * 0.3), calc(var(--shuffle-y, 0) * 0.3)) rotate(calc(var(--shuffle-r, 0deg) * 0.3)); z-index: var(--shuffle-z, 1); }
    88% { transform: translate(calc(var(--shuffle-x, 0) * 0.08), calc(var(--shuffle-y, 0) * 0.08)) rotate(calc(var(--shuffle-r, 0deg) * 0.08)); z-index: 1; }
    100% { transform: translate(0, 0) rotate(0deg); z-index: 1; }
}
.vocabulary-stack.stack-shuffling,
.vocabulary-stack-wrap.stack-shuffling .stack-zone-center {
    overflow: visible;
}
.vocabulary-stack-wrap.stack-shuffling { overflow: visible; }
.vocabulary-stack.stack-shuffling .stack-card:not(.stack-see-more-back):not(.stack-card-removed) {
    animation: stack-card-shuffle 1.5s cubic-bezier(0.33, 1, 0.68, 1) both;
    transition: none;
}
.vocabulary-stack.stack-shuffling .stack-card:nth-child(1) { animation-delay: 0s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(2) { animation-delay: 0.05s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(3) { animation-delay: 0.10s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(4) { animation-delay: 0.15s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(5) { animation-delay: 0.20s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(6) { animation-delay: 0.25s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(7) { animation-delay: 0.30s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(8) { animation-delay: 0.35s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(9) { animation-delay: 0.40s; }
.vocabulary-stack.stack-shuffling .stack-card:nth-child(n+10) { animation-delay: 0.45s; }
.btn-shuffle-stack { display: inline-flex; align-items: center; gap: 0.35rem; }

/* Report modal: card preview (mini front face) */
.report-card-preview {
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 10px;
    border: 1px solid #1a1a1a;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.report-card-preview .stack-card-front,
.report-card-preview .vocabulary-card-front {
    position: relative;
    padding: 1.25rem;
    min-height: 130px;
    background: linear-gradient(180deg, #fbf6ec 0%, #f3ecde 100%);
    border-radius: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.report-card-preview .card-level-corner { top: 0.6rem; left: 0.6rem; font-size: 1.15rem; }
.report-card-preview .word-de-only,
.report-card-preview .word-ar-only { font-size: 1.5rem; font-weight: 600; text-align: center; }
.report-card-preview .front-sentence { font-size: 1.1rem; margin-top: 0.65rem; text-align: center; }
.report-card-preview .stack-card-front-words { text-align: center; }
.report-card-preview .stack-card-flip-hint { display: none; }

/* غلاف السهم + نسيتها: عرض كامل وتوسيط على الديسكتوب (يتجنب انزياح الـ RTL) */
.stack-decorative-clock-wrap {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}
/* ساعة زينة فوق الأوراق (سحب وبسيط) — تبقى ظاهرة على الموبايل */
.stack-decorative-clock {
    pointer-events: none;
    user-select: none;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.35rem;
    transition: transform 0.15s ease;
}
.stack-decorative-clock .stack-clock-icon {
    font-size: 2.75rem;
    color: rgba(124, 58, 237, 0.45);
    display: inline-block;
    line-height: 1;
}
.stack-decorative-clock .stack-decorative-clock-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: #8b5cf6;
    opacity: 0.85;
    line-height: 1.3;
}
@media (min-width: 576px) {
    .stack-decorative-clock .stack-clock-icon {
        font-size: 3.1rem;
        color: rgba(124, 58, 237, 0.5);
    }
    .stack-decorative-clock .stack-decorative-clock-label {
        font-size: 1rem;
    }
}
.stack-card.stack-card--flat-flip .stack-card-flip,
.stack-card.stack-card--flat-flip.flipped .stack-card-flip {
    transform: none !important;
    -webkit-transform: none !important;
    transform-style: flat !important;
    -webkit-transform-style: flat !important;
}
.stack-card.stack-card--flat-flip .stack-card-front,
.stack-card.stack-card--flat-flip .stack-card-back {
    transform-origin: center center;
    -webkit-transform-origin: center center;
    backface-visibility: visible !important;
    -webkit-backface-visibility: visible !important;
    transition: opacity 0.2s ease, transform 0.26s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.stack-card.stack-card--flat-flip .stack-card-front {
    opacity: 1 !important;
    visibility: visible !important;
    transform: scaleX(1) !important;
    -webkit-transform: scaleX(1) !important;
    pointer-events: auto !important;
    z-index: 2;
}
.stack-card.stack-card--flat-flip .stack-card-back {
    opacity: 0 !important;
    visibility: visible !important;
    transform: scaleX(0.08) !important;
    -webkit-transform: scaleX(0.08) !important;
    pointer-events: none !important;
    z-index: 1;
}
.stack-card.stack-card--flat-flip.flipped .stack-card-front {
    opacity: 0 !important;
    visibility: visible !important;
    transform: scaleX(0.08) !important;
    -webkit-transform: scaleX(0.08) !important;
    pointer-events: none !important;
    z-index: 1;
}
.stack-card.stack-card--flat-flip.flipped .stack-card-back {
    opacity: 1 !important;
    visibility: visible !important;
    transform: scaleX(1) !important;
    -webkit-transform: scaleX(1) !important;
    pointer-events: auto !important;
    z-index: 2;
}
/* ديسكتوب: إخفاء التسمية داخل الكرت؛ التكبير للنص فوق الكرت فقط */
@media (min-width: 768px) {
    .vocabulary-stack-wrap {
        position: relative;
    }
    .vocab-flashcard-study-stage {
        position: relative;
        z-index: 1;
    }
    .vocabulary-stack-wrap.stack-swiping-up .stack-decorative-clock-wrap,
    .vocabulary-stack-wrap.stack-swiping-down .stack-decorative-clock-wrap {
        position: relative;
        z-index: 40;
    }
    .stack-card.swiping-up .stack-card-swipe-label-up,
    .stack-card.swiping-down .stack-card-swipe-label-up { display: none !important; }
    .vocabulary-stack-wrap.stack-swiping-up .stack-decorative-clock-wrap .stack-decorative-clock,
    .vocabulary-stack-wrap.stack-swiping-down .stack-decorative-clock-wrap .stack-decorative-clock {
        transform: scale(var(--swipe-up-icon-scale, 1));
    }
}

.stack-card .stack-card-flip {
    position: relative;
    z-index: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    transition: transform 0.58s cubic-bezier(0.22, 1, 0.36, 1);
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    will-change: transform;
    border-radius: 8px;
}

html.vocab-focus-expanded-lock,
body.vocab-focus-expanded-lock {
    overflow: hidden;
    overscroll-behavior: none;
}
.stack-focus-close-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.94);
    color: #0f172a;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.16);
    backdrop-filter: blur(10px);
}
.stack-focus-close-btn:hover,
.stack-focus-close-btn:focus-visible {
    background: #ffffff;
    color: #0f172a;
    border-color: rgba(100, 116, 139, 0.45);
}
.stack-focus-close-btn .las {
    font-size: 1.15rem;
    line-height: 1;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-focus-close-btn,
.vocabulary-index-page.vocab-mobile-expanded .stack-focus-close-btn {
    position: fixed;
    top: calc(env(safe-area-inset-top, 0px) + 0.85rem);
    inset-inline-end: clamp(0.75rem, 2vw, 1.25rem);
    z-index: 10076;
    display: inline-flex;
}
/* Desktop: float above focus shell; mobile offset set in @media (vocab-mobile-expanded) */
.vocabulary-index-page.vocab-desktop-popup-open .course-chat-floating.js-course-chat-floating {
    display: none !important;
}
/* Focus mode: brand strip only (footer has real stack controls; swipe strips stay hidden below) */
.vocab-stack-focus-header {
    display: none;
    flex-direction: column;
    flex: 0 0 auto;
}
.vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-header,
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-header {
    display: flex;
    position: fixed;
    top: 0;
    inset-inline: 0;
    z-index: 10074;
    pointer-events: auto;
}
.vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-brand-bar.dialogue-expanded-brand-bar,
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-brand-bar.dialogue-expanded-brand-bar {
    display: flex !important;
    width: 100%;
    min-height: 34px;
    padding: 6px 14px;
    padding-top: calc(6px + env(safe-area-inset-top, 0px));
    background: #c40000;
    align-items: center;
    justify-content: center;
    border-radius: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}
.vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-brand-bar .dialogue-expanded-brand,
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-brand-bar .dialogue-expanded-brand {
    color: #fff !important;
    text-decoration: none;
    line-height: 1;
    font-weight: 400 !important;
    letter-spacing: 0.3px;
    direction: ltr;
    unicode-bidi: isolate;
    display: inline-flex;
    align-items: baseline;
    justify-content: center;
    flex-direction: row;
    max-width: 100%;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-brand-bar .mobile-brand-fancy-text,
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-brand-bar .mobile-brand-fancy-text {
    font-size: 18px;
    font-weight: 400 !important;
    text-shadow: none;
}
.vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-brand-bar .mobile-brand-gmbh,
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-brand-bar .mobile-brand-gmbh {
    font-size: 9px;
    font-weight: 400 !important;
    margin-inline-start: 4px;
    opacity: 0.9;
}
/* Reserve space for fixed close button so it does not overlap brand text */
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-brand-bar.dialogue-expanded-brand-bar {
    padding-inline-end: 52px;
}
/* Focus-mode counters: visible only in mobile-expanded or desktop-popup-open. */
.vocab-stack-focus-counters {
    display: none;
}
.vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-counters,
.vocabulary-index-page.vocab-mobile-expanded .vocab-stack-focus-counters {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    width: 100%;
    padding: 0.4rem 0.75rem;
    background: #ffffff;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}
.vocab-stack-focus-counter {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.28rem 0.65rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 0.78rem;
    line-height: 1;
    font-weight: 500;
    white-space: nowrap;
}
.vocab-stack-focus-counter .las {
    font-size: 0.95rem;
    line-height: 1;
}
.vocab-stack-focus-counter__label {
    font-weight: 500;
}
.vocab-stack-focus-counter__value {
    font-weight: 700;
    font-size: 0.88rem;
    line-height: 1;
    min-width: 1.2em;
    text-align: center;
}
.vocab-stack-focus-counter--repeat {
    background: rgba(234, 88, 12, 0.1);
    border-color: rgba(234, 88, 12, 0.3);
    color: #9a3412;
}
.vocab-stack-focus-counter--new {
    background: rgba(22, 163, 74, 0.1);
    border-color: rgba(22, 163, 74, 0.3);
    color: #166534;
}
.vocab-stack-focus-counter.is-zero {
    opacity: 0.55;
}
.stack-footer-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    width: 100%;
}
.stack-footer-nav .stack-footer-row {
    display: flex;
    align-items: stretch;
    gap: 0.5rem;
    width: 100%;
}
.stack-footer-nav .stack-footer-row--simple-status {
    display: none;
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
    width: 100%;
    margin: 0;
    direction: rtl;
}
.vocab-study-mode-simple .stack-footer-nav .stack-footer-row--simple-status {
    display: grid;
}
.stack-footer-nav .stack-footer-row--controls {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
}
/* Lesson flashcards: only Previous + Shuffle in this row (no third Report slot). */
#lesson-flashcards-section .stack-footer-nav .stack-footer-row--controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}
.stack-footer-nav .stack-footer-row--undo {
    grid-column: 1 / -1;
    justify-content: center;
}
.stack-footer-nav .stack-footer-row--secondary {
    grid-column: 1 / -1;
}
.stack-footer-nav__btn {
    width: 100%;
    min-height: 44px;
    border-radius: 12px !important;
    font-weight: 700;
    line-height: 1.15;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    white-space: normal;
    text-align: center;
}
.stack-footer-nav .stack-footer-row--undo .stack-footer-nav__btn {
    max-width: 260px;
}
.stack-footer-nav .stack-footer-row--secondary .stack-footer-nav__btn {
    flex: 1 1 0;
    min-width: 0;
}
.stack-footer-nav .stack-footer-row--controls .stack-footer-nav__btn {
    min-width: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-focus-intro-text,
.vocabulary-index-page.vocab-mobile-expanded .stack-focus-intro-text,
.vocabulary-index-page.vocab-desktop-popup-open #stack-dots-wrap,
.vocabulary-index-page.vocab-mobile-expanded #stack-dots-wrap,
.vocabulary-index-page.vocab-desktop-popup-open .stack-swipe-strip,
.vocabulary-index-page.vocab-mobile-expanded .stack-swipe-strip {
    display: none !important;
}
.vocabulary-index-page.vocab-desktop-popup-open #vocab-flashcard-study-shell,
.vocabulary-index-page.vocab-mobile-expanded #vocab-flashcard-study-shell {
    isolation: isolate;
}
.vocabulary-index-page.vocab-desktop-popup-open #vocabulary-stack-wrap {
    min-height: 0;
    box-sizing: border-box;
}
/* Desktop popup keeps `display: contents` because the current footer HTML groups buttons into row wrappers. */
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report {
    display: grid !important;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.55rem;
    align-items: stretch;
    flex: 0 0 auto;
    width: min(640px, 100%);
    max-width: 640px;
    margin: auto auto 0 !important;
    padding: 0.65rem;
    border-radius: 18px;
    background: rgba(248, 250, 252, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.24);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
    box-sizing: border-box;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-nav,
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-row--undo,
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-row--secondary,
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-row--expand,
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-row--flip {
    display: contents;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-row--simple-status {
    display: none;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report #stack-footer-flip-btn {
    display: inline-flex !important;
    grid-column: 1 / -1;
    grid-row: 1;
    width: 100%;
    min-width: 0;
    min-height: 44px;
    flex-direction: row;
}

.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report #stack-footer-flip-btn i {
    margin: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report .stack-flip-first-msg {
    display: none !important;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report .stack-footer-row--simple-status {
    display: grid;
    grid-column: 1 / -1;
    grid-row: 2;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-footer-row--controls {
    display: grid;
    grid-column: 1 / 4;
    grid-row: 2;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report .stack-footer-row--controls {
    grid-row: 3;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report #stack-report-error-btn {
    grid-column: 3;
    grid-row: 1;
    width: 100%;
    min-width: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report #stack-report-error-btn {
    grid-column: 3;
    grid-row: 3;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report #stack-undo-btn {
    grid-column: 1;
    grid-row: 1;
    width: 100%;
    min-width: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report #stack-undo-btn {
    grid-column: 1;
    grid-row: 3;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report #stack-shuffle-btn {
    grid-column: 2;
    grid-row: 1;
    width: 100%;
    min-width: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report #stack-shuffle-btn {
    grid-column: 2;
    grid-row: 3;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report #stack-expand-btn {
    grid-column: 4;
    grid-row: 2;
    width: 100%;
    min-width: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open.vocab-study-mode-simple .stack-footer-report #stack-expand-btn {
    grid-column: 1 / -1;
    grid-row: 4;
    width: 100%;
    min-width: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .stack-flip-first-msg {
    grid-column: 1 / -1;
    grid-row: 1;
    width: 100%;
    max-width: 100%;
    margin: 0;
}
.vocabulary-index-page.vocab-mobile-expanded .stack-footer-report .stack-flip-first-msg {
    display: none !important;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .btn {
    min-height: 44px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.15;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    white-space: nowrap;
}
.vocabulary-index-page.vocab-desktop-popup-open .stack-footer-report .btn i {
    font-size: 1.05rem;
    line-height: 1;
    margin: 0;
}
.vocabulary-index-page.vocab-desktop-popup-open #stack-expand-btn.is-expanded {
    color: #B60000 !important;
    background: #fff !important;
    border-color: #B60000 !important;
}
.vocabulary-index-page.vocab-desktop-popup-open #stack-expand-btn.is-expanded:hover:not(:disabled) {
    background: rgba(182, 0, 0, 0.06) !important;
}
.vocabulary-index-page.vocab-mobile-expanded #vocab-flashcard-study-stage {
    display: flex;
    flex: 1 1 auto;
    align-items: center;
    justify-content: center;
    min-height: 0;
}
.vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-outer {
    display: grid !important;
    grid-template-columns: minmax(40px, 0.55fr) auto minmax(40px, 0.55fr);
    gap: 0;
    align-items: center;
    justify-items: stretch;
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
    padding: 0;
    direction: ltr;
}
.vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-outer {
    display: flex !important;
    justify-content: center;
    align-items: stretch;
    position: relative;
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
    padding: 0;
    direction: ltr;
}
.vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-center {
    grid-column: 2;
    justify-self: center;
    flex: unset;
    width: min(100%, 440px);
    max-width: 100%;
    min-width: 0;
    margin: 0 auto;
    padding-bottom: 0;
    position: relative;
    z-index: 2;
}
.vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-center {
    flex: 0 0 var(--vocab-stack-card-w, 340px);
    width: var(--vocab-stack-card-w, 340px);
    max-width: var(--vocab-stack-card-w, 340px);
    min-width: var(--vocab-stack-card-w, 340px);
    margin: 0 auto;
    position: relative;
    z-index: 2;
}
.vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-left,
.vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-right {
    position: relative;
    z-index: 8;
}
/* موبايل عادي (غير المكبّر): صف واحد بأربعة أعمدة — نفس أزرار الديسكتوب عبر grid-template */
@media (max-width: 767.98px) {
    .vocabulary-stack-wrap {
        display: flex;
        flex-direction: column;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report {
        order: 0;
        display: grid !important;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        align-items: stretch;
        gap: 0.3rem;
        margin-top: 0.55rem !important;
        margin-bottom: 0;
        width: 100%;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-flip-first-msg {
        grid-column: 1 / -1;
        grid-row: 1;
        width: 100%;
        min-width: 0;
        margin: 0.2rem 0 0;
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-nav,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--undo,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--secondary,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--expand {
        display: contents;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--simple-status {
        display: none;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-simple .stack-footer-report .stack-footer-row--simple-status {
        display: grid;
        grid-column: 1 / -1;
        grid-row: 2;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--controls {
        display: grid;
        grid-column: 1 / 4;
        grid-row: 2;
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--flip,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--tts,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-footer-row--top {
        display: grid;
        grid-column: 1 / -1;
        grid-template-columns: minmax(0, 1fr);
        gap: 0.35rem;
        width: 100%;
        padding: 0.25rem;
        border: 1px solid rgba(182, 0, 0, 0.16);
        border-radius: 999px;
        background: rgba(182, 0, 0, 0.05);
    }

    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-simple .stack-footer-report .stack-footer-row--controls {
        grid-row: 3;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report #stack-report-error-btn {
        grid-column: 3;
        grid-row: 1;
        min-width: 0;
        width: 100%;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report #stack-undo-btn {
        grid-column: 1;
        grid-row: 1;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report #stack-shuffle-btn {
        grid-column: 2;
        grid-row: 1;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report #stack-expand-btn {
        grid-column: 4;
        grid-row: 2;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-simple .stack-footer-report #stack-expand-btn {
        grid-row: 3;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .btn {
        white-space: normal;
        line-height: 1.1;
        text-align: center;
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 2.45rem;
        padding: 0.28rem 0.25rem;
        font-size: 0.82rem;
    }

    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .tts-speed-control__trigger {
        min-height: auto;
        font-size: 0.82rem;
    }

    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .btn i {
        margin: 0 0 0.12rem 0;
        line-height: 1;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-report-btn-text,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-undo-btn-text,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .shuffle-btn-text,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-footer-report .stack-expand-btn__label {
        display: inline-block;
        line-height: 1.15;
    }
}
/* Desktop: صف واحد Report | Previous | Shuffle | Expand */
@media (min-width: 768px) {
    .vocabulary-index-page .stack-footer-report {
        display: grid !important;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 0.35rem;
        align-items: stretch;
    }
    .vocabulary-index-page .stack-footer-report .stack-flip-first-msg {
        grid-column: 1 / -1;
        grid-row: 1;
    }
    .vocabulary-index-page .stack-footer-report .stack-footer-nav,
    .vocabulary-index-page .stack-footer-report .stack-footer-row--undo,
    .vocabulary-index-page .stack-footer-report .stack-footer-row--secondary,
    .vocabulary-index-page .stack-footer-report .stack-footer-row--expand {
        display: contents;
    }
    .vocabulary-index-page .stack-footer-report .stack-footer-row--simple-status {
        display: none;
    }
    .vocabulary-index-page.vocab-study-mode-simple .stack-footer-report .stack-footer-row--simple-status {
        display: grid;
        grid-column: 1 / -1;
        grid-row: 2;
    }
    .vocabulary-index-page .stack-footer-report .stack-footer-row--controls {
        display: grid;
        grid-column: 1 / 4;
        grid-row: 2;
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .vocabulary-index-page.vocab-study-mode-simple .stack-footer-report .stack-footer-row--controls {
        grid-row: 3;
    }
    .vocabulary-index-page .stack-footer-report #stack-report-error-btn {
        grid-column: 3;
        grid-row: 1;
        width: 100%;
        min-width: 0;
    }
    .vocabulary-index-page .stack-footer-report #stack-undo-btn {
        grid-column: 1;
        grid-row: 1;
        width: 100%;
        min-width: 0;
    }
    .vocabulary-index-page .stack-footer-report #stack-shuffle-btn {
        grid-column: 2;
        grid-row: 1;
        width: 100%;
        min-width: 0;
    }
    .vocabulary-index-page .stack-footer-report #stack-expand-btn {
        grid-column: 4;
        grid-row: 2;
        width: 100%;
        min-width: 0;
    }
    .vocabulary-index-page.vocab-study-mode-simple .stack-footer-report #stack-expand-btn {
        grid-row: 3;
    }
}

/* تقسيم المكان لكونتينرات — الرموز بأبعد كونتير (يسار ويمين) */
.stack-zone-outer {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 0;
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    position: relative;
}
/* الحاويتان الخارجيتان: الرموز والنص (جديدة / بعرفها) */
.stack-zone-spacer-left,
.stack-zone-spacer-right {
    flex: 1;
    min-width: 140px;
    min-height: var(--vocab-stack-card-h, 448px);
    display: flex;
}
.stack-zone-spacer-left {
    align-items: center;
    justify-content: flex-start;
    padding-left: 0.5rem;
}
.stack-zone-spacer-right {
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.5rem;
}
/* عند اللغة العربية: عكس ترتيب الحاويات (✓ يسار، جديدة يمين) */
html[lang="ar"] .stack-zone-outer {
    flex-direction: row-reverse;
}
html[lang="ar"] .stack-zone-spacer-left {
    justify-content: flex-end;
    padding-left: 0;
    padding-right: 0.5rem;
}
html[lang="ar"] .stack-zone-spacer-right {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 0.5rem;
}
/* قسم البطاقات: دائماً LTR — لا يتأثر بلسان الموقع (يسار=جديدة، يمين=أعرفها) */
.vocabulary-stack-wrap[dir="ltr"] .stack-zone-outer {
    flex-direction: row;
}
.vocabulary-stack-wrap[dir="ltr"] .stack-zone-spacer-left {
    justify-content: flex-start;
    padding-left: 0.5rem;
    padding-right: 0;
}
.vocabulary-stack-wrap[dir="ltr"] .stack-zone-spacer-right {
    justify-content: flex-end;
    padding-right: 0.5rem;
    padding-left: 0;
}
.stack-zone-icon {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    opacity: 0.78;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s;
    pointer-events: none;
    user-select: none;
}
.stack-zone-left-icon,
.stack-zone-right-icon,
.stack-zone-icon-below {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.4rem;
}
.stack-zone-left-icon > i { font-size: 1.1em; }
.stack-zone-left-icon .stack-zone-label-two-lines,
.stack-zone-right-icon small {
    font-size: 0.35em;
    font-weight: 700;
    display: block;
    text-align: center;
    line-height: 1.3;
}
.stack-zone-left-icon,
.stack-zone-right-icon { transform: translateX(0); }
.stack-zone-left-icon { color: #dc2626; }
.stack-zone-right-icon { color: #16a34a; }
.vocabulary-stack-wrap.stack-swiping-right .stack-zone-right-icon,
.vocabulary-stack-wrap.stack-swiping-left .stack-zone-left-icon,
.vocabulary-stack-wrap.stack-swiping-up .stack-zone-up-icon { opacity: 0.95; }
.vocabulary-stack-wrap.stack-swiping-right .stack-zone-right-icon {
    transform: translateX(-48px) scale(1.2);
}
.vocabulary-stack-wrap.stack-swiping-left .stack-zone-left-icon {
    transform: translateX(48px) scale(1.2);
}
[dir="rtl"] .vocabulary-stack-wrap.stack-swiping-right .stack-zone-right-icon {
    transform: translateX(48px) scale(1.2);
}
[dir="rtl"] .vocabulary-stack-wrap.stack-swiping-left .stack-zone-left-icon {
    transform: translateX(-48px) scale(1.2);
}
/* قسم البطاقات LTR: تحويلات اليمين/يسار ثابتة (لا عكس مع لسان الصفحة) */
.vocabulary-stack-wrap[dir="ltr"].stack-swiping-right .stack-zone-right-icon {
    transform: translateX(-48px) scale(1.2);
}
.vocabulary-stack-wrap[dir="ltr"].stack-swiping-left .stack-zone-left-icon {
    transform: translateX(48px) scale(1.2);
}
.stack-zone-up-icon {
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: #8b5cf6;
    opacity: 0.78;
    transition: opacity 0.2s;
    white-space: normal;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.stack-zone-up-icon .remind-icon { font-size: 1.75rem; margin-bottom: 0.15rem; }
/* سطران تحت السهم — على الموبايل ضيق نُبقي السهم فقط لتفادي الازدحام */
.stack-zone-up-icon .stack-zone-up-lines,
.stack-zone-label-one-line {
    display: none;
    font-weight: 800;
    color: #7c3aed;
    line-height: 1.25;
    margin-top: 0.2rem;
    white-space: nowrap;
    text-align: center;
}
.stack-decorative-clock .stack-decorative-clock-label.stack-zone-label-one-line {
    display: none;
    white-space: nowrap;
}
@media (min-width: 768px) {
    .stack-zone-up-icon .stack-zone-up-lines,
    .stack-decorative-clock .stack-decorative-clock-label.stack-zone-label-one-line {
        display: block;
        font-size: max(11px, 0.72rem);
    }
}
/* تسمية السحب لأعلى — تظهر على الموبايل فقط عند .swiping-up */
.stack-card-swipe-label-up {
    display: none;
    position: absolute;
    left: 50%;
    top: 1.15rem;
    transform: translate(-50%, 0);
    flex-direction: column;
    align-items: center;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: #8b5cf6;
    opacity: 0.95;
    pointer-events: none;
    z-index: 21;
    line-height: 1.25;
    transition: transform 0.12s ease-out, opacity 0.12s ease-out;
    gap: 0.15rem;
}
.stack-card-swipe-label-up .las { font-size: 2.25rem; }
.stack-card-swipe-label-up .stack-card-swipe-label-text .d-block { display: block; }
.stack-card.swiping-up::before,
.stack-card.swiping-down::before {
    content: none;
    display: none;
}
.stack-card.swiping-up .stack-card-swipe-label-up,
.stack-card.swiping-down .stack-card-swipe-label-up {
    transform: translate(-50%, 0) scale(var(--swipe-up-icon-scale, 1));
}

/* تسميات السحب (موبايل): مخفية في الديسكتوب */
.stack-card-swipe-label {
    display: none;
    pointer-events: none;
}
/* موبايل: الكروت في المنتصف + إخفاء الرموز الجانبية، وعند السحب إظهار الرمز + كلمات التكرار */
@media (max-width: 767px) {
    .vocab-study-mode-toggle {
        gap: 0.4rem;
        margin-bottom: 0.65rem;
    }

    .vocab-study-mode-toggle__label {
        flex-basis: 100%;
        font-size: 0.9rem;
    }

    .vocab-study-mode-toggle__buttons {
        width: 100%;
        max-width: 420px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        border-radius: 18px;
    }

    .vocab-study-mode-toggle__btn {
        border-radius: 14px;
        padding: 0.55rem 0.4rem;
        font-size: 0.86rem;
    }

    .vocabulary-simple-wrap {
        max-width: 100%;
    }

    .vocabulary-simple-card {
        width: min(100%, var(--vocab-stack-card-w, 340px));
        max-width: min(100%, var(--vocab-stack-card-w, 340px));
    }

    .vocabulary-simple-card__paper,
    .vocabulary-simple-card__prompt,
    .vocabulary-simple-card__answer {
        min-height: var(--vocab-stack-card-h, 448px);
    }

    .vocabulary-simple-card__answer-scroll {
        max-height: calc(var(--vocab-stack-card-h, 448px) - 1.25rem);
    }

    .vocabulary-simple-actions {
        grid-template-columns: 1fr;
        gap: 0.45rem;
        padding: 0.65rem;
    }

    .vocabulary-simple-status-btn {
        min-height: 54px;
        flex-direction: row;
        gap: 0.35rem;
    }

    .vocab-stack-simple-actions {
        grid-template-columns: 1fr;
        width: min(100%, var(--vocab-stack-card-w, 340px));
        gap: 0.45rem;
        margin-top: 0.55rem;
    }

    .vocab-flashcard-study-shell {
        --vocab-shell-safe-top: var(--dms-fixed-header-height, 0px);
        --vocab-shell-safe-bottom: var(--vocab-study-bottom-clearance, calc(env(safe-area-inset-bottom, 0px) + 8px));
        --vocab-stack-tail-space: 12px;
        display: flex;
        flex-direction: column;
        min-height: calc(var(--vocab-live-viewport-h, var(--vocab-safe-viewport-h, 100vh)) - var(--vocab-shell-safe-top) - var(--vocab-shell-safe-bottom));
        padding-bottom: max(0px, var(--vocab-shell-safe-bottom));
        min-width: 0;
        overflow-x: hidden;
        overflow-y: visible;
        isolation: isolate;
    }
    .vocab-flashcard-study-shell .vocabulary-stack-wrap {
        position: relative;
        flex: 1 1 auto;
        min-height: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        overflow-x: hidden;
        overflow-y: visible;
    }
    .vocab-flashcard-study-stage {
        position: relative;
        z-index: 1;
        flex: 1 1 auto;
        min-height: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        overflow-x: hidden;
        overflow-y: visible;
        padding-bottom: 0.35rem;
    }
    /* أثناء السحب: لا نقص البطاقة النشطة داخل غلاف الدراسة */
    .vocab-flashcard-study-shell.stack-drag-active,
    .vocabulary-stack-wrap.stack-drag-active,
    .vocab-flashcard-study-shell.stack-drag-active .vocab-flashcard-study-stage,
    .vocab-flashcard-study-shell.stack-drag-active .stack-zone-outer,
    .vocab-flashcard-study-shell.stack-drag-active .stack-zone-center,
    .vocab-flashcard-study-shell.stack-drag-active #vocabulary-stack,
    .vocabulary-stack-wrap.stack-drag-active #vocabulary-stack,
    .vocabulary-stack-wrap:has(.stack-card--dragging),
    .vocabulary-stack-wrap:has(.stack-card--exiting-front),
    .vocab-flashcard-study-shell:has(.stack-card--dragging),
    .vocab-flashcard-study-shell:has(.stack-card--exiting-front),
    .vocabulary-stack-wrap:has(.stack-card--dragging) .vocab-flashcard-study-stage,
    .vocabulary-stack-wrap:has(.stack-card--dragging) .stack-zone-outer,
    .vocabulary-stack-wrap:has(.stack-card--dragging) .stack-zone-center,
    .vocabulary-stack-wrap:has(.stack-card--dragging) #vocabulary-stack,
    .vocabulary-stack-wrap:has(.stack-card--exiting-front) .vocab-flashcard-study-stage,
    .vocabulary-stack-wrap:has(.stack-card--exiting-front) .stack-zone-outer,
    .vocabulary-stack-wrap:has(.stack-card--exiting-front) .stack-zone-center,
    .vocabulary-stack-wrap:has(.stack-card--exiting-front) #vocabulary-stack {
        overflow: visible !important;
    }
    .vocab-flashcard-study-shell.stack-drag-active .vocab-flashcard-study-stage,
    .vocabulary-stack-wrap.stack-drag-active .vocab-flashcard-study-stage {
        z-index: 120 !important;
    }
    .stack-card.stack-card--dragging {
        position: absolute !important;
        z-index: var(--vocab-stack-card-drag-z, 2147483000) !important;
        will-change: transform;
        isolation: isolate;
    }
    #vocabulary-stack .stack-card.vocab-card--active.stack-card--dragging {
        z-index: var(--vocab-stack-card-drag-z, 2147483000) !important;
    }
    #vocabulary-stack .stack-card.stack-card--exiting-front {
        z-index: var(--vocab-stack-card-drag-z, 2147483000) !important;
        isolation: isolate;
        pointer-events: none !important;
    }
    .vocabulary-stack-wrap.stack-drag-active #vocabulary-stack .stack-card:not(.stack-card-removed) {
        visibility: visible !important;
    }
    .vocabulary-stack-wrap.stack-drag-active #vocabulary-stack .stack-card:not(.stack-card-removed):not(.stack-card--dragging) {
        opacity: 1 !important;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
        transition: none;
    }
    .stack-zone-up-hint {
        flex-shrink: 0;
        margin-top: 0.3rem !important;
    }
    /* تلميحات اليمين/اليسار: شبكة فقط لتصميم السحب (البسيط يبقى مضغوطاً بمركز البطاقة) */
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-outer,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-outer {
        flex: 1 1 auto;
        min-height: 0;
        max-width: 100%;
        padding: 0 0.2rem;
        overflow-x: visible;
        overflow-y: visible;
        display: grid !important;
        grid-template-columns: minmax(44px, 0.55fr) auto minmax(44px, 0.55fr);
        align-items: center;
        justify-items: stretch;
        gap: 0 0.08rem;
        width: 100%;
    }
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-spacer-right,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-left,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-right {
        display: flex !important;
        min-width: 0;
        min-height: min(46vh, var(--vocab-stack-card-h, 420px));
        max-width: none;
        flex: unset;
        position: static;
        transform: none;
    }
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-spacer-left,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-left {
        grid-column: 1;
        align-items: center;
        justify-content: flex-start;
    }
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-spacer-right,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-right {
        grid-column: 3;
        align-items: center;
        justify-content: flex-end;
    }
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-center,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-center {
        grid-column: 2;
    }
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-left-icon,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-right-icon,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-left-icon,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-right-icon {
        display: inline-flex !important;
    }
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-up-icon .stack-zone-up-lines,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode) .stack-zone-up-icon .stack-zone-up-lines {
        display: block !important;
        font-size: max(10px, 0.68rem);
        font-weight: 800;
        color: #7c3aed;
        line-height: 1.28;
        margin-top: 0.12rem;
    }
    .vocabulary-index-page.vocab-study-mode-simple .stack-zone-up-icon .stack-zone-up-lines,
    #lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-zone-up-icon .stack-zone-up-lines {
        display: block !important;
        font-size: max(10px, 0.65rem);
        font-weight: 800;
        color: #7c3aed;
        line-height: 1.28;
        margin-top: 0.12rem;
    }
    .stack-zone-center {
        flex: 0 0 auto;
        min-height: 0;
        display: flex;
        justify-content: center;
        align-items: flex-start;
        width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        min-width: 0;
        max-width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        margin-inline: auto;
        padding-bottom: 0.2rem;
        box-sizing: border-box;
        overflow-x: hidden;
        overflow-y: visible;
    }

    .vocabulary-stack {
        min-height: calc(var(--vocab-stack-card-h, 448px) + var(--vocab-stack-tail-space, 12px));
        margin-inline: auto;
        width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        min-width: 0;
        max-width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
    }
    .stack-card .stack-card-front,
    .stack-card .stack-card-back {
        padding: 0.36rem 0.3rem 0.25rem;
    }
    .stack-card {
        --stack-card-top-zone-h: 3.15rem;
        --stack-card-bottom-zone-h: 1.45rem;
    }
    .stack-card .stack-card-front-words {
        padding-top: calc(var(--stack-card-top-zone-h) + 0.02rem);
        padding-left: 0.1rem;
        padding-right: 0.1rem;
        gap: 0.3rem;
    }
    .stack-card .stack-back-body {
        padding-top: calc(var(--stack-card-top-zone-h) - 0.04rem);
        padding-bottom: var(--stack-card-bottom-zone-h);
    }
    .stack-card .stack-back-scroll {
        padding: 0.06rem 0.06rem 0.16rem;
    }
    .stack-card .vocab-speech-btn,
    .stack-card .wotd-speech-btn.vocab-speech-btn {
        min-width: 34px;
        min-height: 34px;
    }
    .stack-card .card-level-corner {
        top: 0.42rem;
        left: 0.42rem;
        font-size: 1.22rem;
        max-width: 44%;
    }
    [dir="rtl"] .stack-card .card-level-corner {
        left: auto;
        right: 0.45rem;
    }
    .stack-card .card-seen-corner {
        top: 0.42rem;
        right: 0.42rem;
        font-size: 0.68rem;
        max-width: 52%;
        white-space: normal;
        line-height: 1.1;
        text-align: end;
    }
    [dir="rtl"] .stack-card .card-seen-corner {
        right: auto;
        left: 0.45rem;
        text-align: start;
    }
    .stack-card .stack-card-front .word-de-only,
    .stack-card .stack-card-front .word-ar-only {
        font-size: 17px;
        line-height: 1.5;
        font-weight: 700;
    }
    .stack-card .stack-card-front .front-sentence {
        font-size: 17px;
        line-height: 1.58;
        font-weight: 400;
        margin-top: 0.4rem;
    }
    .stack-card .stack-back-words .card-back-word-de,
    .stack-card .stack-back-words .card-back-article {
        font-size: 17px;
        font-weight: 700;
    }
    .stack-card .stack-back-words .card-back-word-ar,
    .stack-card .stack-back-words .card-back-word-en,
    .stack-card .stack-back-sentence .sentence-line {
        font-size: 17px;
        font-weight: 400;
    }
    .stack-card .stack-back-sentence .sentence-line strong {
        font-weight: 400;
    }
    .stack-card .stack-back-words .card-back-word-ar,
    .stack-card .stack-back-sentence .sentence-line[dir="rtl"] {
        line-height: 1.62;
    }
    .stack-card .stack-back-footer .verb-forms-table-wrap {
        margin-bottom: 0;
    }
    .stack-card .card-brand-watermark {
        bottom: 0.28rem;
        font-size: 0.58rem;
        opacity: 0.16;
    }
    .stack-card.card-layout--compact .stack-card-front,
    .stack-card.card-layout--compact .stack-card-back {
        border-radius: 6px;
    }
    .stack-swipe-strip {
        width: 88px;
        top: 6px;
        bottom: 6px;
    }
    .stack-swipe-strip__inner {
        font-size: 0.76rem;
    }
    /* حاوية مساعدة حالة السحب (موبايل): نفس الموضع والمحاذاة لكل الحالات */
    .stack-card-swipe-label {
        position: absolute;
        left: 50%;
        top: 1.55rem;
        transform: translate(-50%, 0);
        display: none !important;
        flex-direction: column;
        align-items: center;
        text-align: center;
        font-size: 0.88rem;
        font-weight: 700;
        opacity: 0.95;
        z-index: 20;
        line-height: 1.2;
        transition: transform 0.08s ease-out;
        gap: 0.05rem;
        width: min(70%, 210px);
        min-height: 1.15rem;
    }
    .stack-card-swipe-label .stack-card-swipe-label-text {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
        line-height: 1.2;
    }
    .stack-card-swipe-label .stack-card-swipe-label-text .d-block {
        font-size: 0.84rem;
        line-height: 1.2;
    }
    .stack-card-swipe-label .las {
        display: none;
    }
    .stack-card.swiping-right .stack-card-swipe-label-right,
    .stack-card.swiping-left .stack-card-swipe-label-left,
    .stack-card.swiping-up .stack-card-swipe-label-up,
    .stack-card.swiping-down .stack-card-swipe-label-up {
        display: flex !important;
    }
    .stack-card-swipe-label-right { color: #16a34a; }
    .stack-card-swipe-label-right .stack-card-swipe-label-text { font-size: 0.84rem; }
    .stack-card-swipe-label-left { color: #dc2626; }
    .stack-card-swipe-label-left .stack-card-swipe-label-text { font-size: 0.82rem; line-height: 1.2; }
    .stack-card-swipe-label-up { color: #8b5cf6; }
    .stack-card-swipe-label-up .stack-card-swipe-label-text { font-size: 0.82rem; }
    /* إخفاء ::after القديم (✓/✗) واستخدام التسميات الجديدة */
    .stack-card.swiping-right::after,
    .stack-card.swiping-left::after {
        display: none;
    }
    .vocabulary-card-actions .actions-row { gap: 0.3rem; }
    .vocabulary-card-actions .btn {
        min-height: 48px;
        padding: 0.4rem 0.25rem;
        font-size: 0.85rem;
    }
    .vocabulary-card-actions .btn-vocab-with-label .las,
    .vocabulary-card-actions .btn-remind .btn-remind-icon,
    .vocabulary-card-actions .btn-vocab-repeat-5 .las { font-size: 1rem; }
    .vocabulary-card-actions .btn-label-two-lines,
    .vocabulary-card-actions .btn-vocab-with-label .btn-learned-label { font-size: 0.8em; }
    .vocabulary-card-actions .btn-remind .btn-remind-times { font-size: 0.65rem; }
    .vocabulary-card-actions .btn-vocab-with-label .btn-learned-label,
    .vocabulary-card-actions .btn-remind .btn-remind-label,
    .vocabulary-card-actions .btn-vocab-repeat-5 .btn-repeat-label { min-height: 2.2em; }
}
@media (max-width: 430px) {
    .stack-card .stack-card-front .word-de-only,
    .stack-card .stack-card-front .word-ar-only,
    .stack-card .stack-back-words .card-back-word-de,
    .stack-card .stack-back-words .card-back-article,
    .stack-card .stack-back-words .card-back-word-ar,
    .stack-card .stack-back-words .card-back-word-en {
        font-size: 18.5px;
    }
}
@media (min-width: 768px) {
    .stack-focus-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.48);
        opacity: 0;
        transition: opacity 0.22s ease;
        pointer-events: none;
        z-index: 10060;
    }
    .vocabulary-index-page.vocab-desktop-popup-open #vocab-focus-backdrop {
        z-index: 0 !important;
        opacity: 1;
        pointer-events: auto;
        background: rgba(15, 23, 42, 0.42);
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
    }
    .vocabulary-index-page.vocab-desktop-popup-open #vocab-flashcard-study-shell {
        position: fixed;
        inset: 0;
        z-index: 10070;
        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: calc(var(--vocab-focus-header-h, 46px) + 1.25rem) 1.5rem 1.5rem;
        margin: 0 !important;
        overflow: hidden;
        background: transparent;
        isolation: isolate;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .vocab-stack-focus-header {
        z-index: 9 !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open #vocabulary-stack-wrap {
        position: relative;
        z-index: 2 !important;
        --vocab-stack-card-w: 340px;
        --vocab-stack-card-h: 448px;
        width: min(920px, calc(100vw - 48px));
        max-width: 920px;
        height: auto;
        min-height: calc(var(--vocab-stack-card-h) + 150px);
        max-height: calc(100vh - var(--vocab-focus-header-h, 46px) - 32px);
        max-height: calc(100dvh - var(--vocab-focus-header-h, 46px) - 32px);
        margin: 0 auto;
        padding: 24px 28px 18px;
        border-radius: 24px;
        background: rgba(255, 255, 255, 0.98);
        border: 1px solid rgba(148, 163, 184, 0.28);
        box-shadow:
            0 24px 70px rgba(15, 23, 42, 0.28),
            0 2px 10px rgba(15, 23, 42, 0.08);
        display: grid !important;
        grid-template-rows: auto auto auto;
        align-content: center;
        justify-items: center;
        overflow: visible;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-focus-intro-text,
    .vocabulary-index-page.vocab-desktop-popup-open #stack-dots-wrap {
        display: none !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-decorative-clock-wrap {
        display: flex !important;
        width: 100%;
        justify-content: center;
        align-items: center;
        margin: 0 0 10px !important;
        flex: 0 0 auto;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-decorative-clock {
        transform: none;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-decorative-clock .stack-clock-icon {
        font-size: 2.4rem;
        color: rgba(124, 58, 237, 0.7);
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-decorative-clock .stack-decorative-clock-label {
        font-size: 0.9rem;
        font-weight: 800;
        color: #8b5cf6;
        line-height: 1.25;
    }
    .vocabulary-index-page.vocab-desktop-popup-open #vocab-flashcard-study-stage,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-outer {
        position: relative;
        z-index: 3;
    }
    /* Side swipe hints stay visible above the tilted card — z-index on center vs spacers below */
    .vocabulary-index-page.vocab-desktop-popup-open .vocabulary-stack {
        position: relative;
        z-index: auto;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-right {
        position: relative;
        z-index: 8;
    }
    .vocabulary-index-page.vocab-desktop-popup-open #vocab-flashcard-study-stage {
        width: 100%;
        display: flex !important;
        align-items: center;
        justify-content: center;
        min-height: 0;
        overflow: visible;
        position: relative;
    }
    /* 3 columns: left swipe zone | card (auto width) | right swipe zone — hints align to popup edges via column padding, not margins from the card */
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-outer {
        width: 100%;
        max-width: min(100%, 860px);
        display: grid !important;
        grid-template-columns: minmax(96px, 1fr) auto minmax(96px, 1fr);
        grid-template-rows: auto;
        align-items: center;
        justify-items: stretch;
        gap: 0;
        margin: 0 auto;
        padding: 0;
        direction: ltr;
        overflow: visible;
        min-width: 0;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-center {
        position: relative;
        grid-column: 2;
        justify-self: center;
        width: var(--vocab-stack-card-w) !important;
        min-width: var(--vocab-stack-card-w) !important;
        max-width: var(--vocab-stack-card-w) !important;
        height: calc(var(--vocab-stack-card-h) + 82px);
        flex: 0 0 var(--vocab-stack-card-w);
        display: flex;
        align-items: flex-start;
        justify-content: center;
        margin: 0 auto;
        padding: 0;
        overflow: visible;
        z-index: 2;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .vocabulary-stack {
        width: var(--vocab-stack-card-w) !important;
        min-width: var(--vocab-stack-card-w) !important;
        max-width: var(--vocab-stack-card-w) !important;
        min-height: calc(var(--vocab-stack-card-h) + 82px);
        margin: 0 auto;
        overflow: visible;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-card {
        width: var(--vocab-stack-card-w) !important;
        height: var(--vocab-stack-card-h) !important;
        min-height: var(--vocab-stack-card-h) !important;
        border-radius: 12px;
        box-shadow:
            0 12px 28px rgba(15, 23, 42, 0.18),
            0 2px 6px rgba(15, 23, 42, 0.12);
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-right {
        display: flex !important;
        justify-self: stretch;
        align-self: stretch;
        width: 100%;
        min-width: 0;
        max-width: none;
        min-height: var(--vocab-stack-card-h);
        height: var(--vocab-stack-card-h);
        align-items: center;
        overflow: visible;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-left {
        grid-column: 1;
        justify-content: flex-start;
        padding-inline-start: clamp(8px, 2vw, 28px);
        padding-inline-end: 12px;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-spacer-right {
        grid-column: 3;
        justify-content: flex-end;
        padding-inline-end: clamp(8px, 2vw, 28px);
        padding-inline-start: 12px;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-icon {
        position: static;
        display: inline-flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 6px;
        max-width: 130px;
        text-align: center;
        white-space: normal;
        line-height: 1.35;
        opacity: 0.55;
        font-size: 3rem;
        pointer-events: none;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-icon small,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-left-icon .stack-zone-label-two-lines {
        display: block !important;
        max-width: 120px;
        font-size: clamp(12px, 1.2vw, 15px) !important;
        font-weight: 700 !important;
        line-height: 1.35 !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-left-icon,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-right-icon {
        display: inline-flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
        gap: 6px;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-card .stack-card-front,
    .vocabulary-index-page.vocab-desktop-popup-open .stack-card .stack-card-back {
        border-radius: 11px;
    }
    /* تعليق عربي: إخفاء النسخة المكررة السفلية من تلميح السحب للأعلى داخل Focus Popup؛ يبقى تلميح البطاقة العلوي فقط. */
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-up-hint {
        display: none !important;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-zone-up-icon {
        position: static;
        transform: none;
    }
    .vocabulary-index-page.vocab-desktop-popup-open .stack-focus-close-btn {
        position: fixed;
        top: calc(var(--vocab-focus-header-h, 46px) + 0.75rem);
        inset-inline-end: 1.25rem;
        z-index: 10 !important;
        width: 44px;
        height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255, 0.96);
        border-color: rgba(148, 163, 184, 0.35);
        color: #111827;
        box-shadow: 0 12px 30px rgba(15, 23, 42, 0.14);
    }
}
@media (max-width: 767.98px) {
    /* Mobile fullscreen flashcards: header (fixed brand) + card stage + bottom action bar */
    .vocabulary-index-page.vocab-mobile-expanded {
        --vocab-stack-tail-space: 34px;
        --vocab-mobile-stack-layer-max: 5;
        --vocab-mobile-stack-layer-step: 6px;
        --vocab-mobile-stack-layer-cap: calc(var(--vocab-mobile-stack-layer-max) * var(--vocab-mobile-stack-layer-step));
        /* Lift bottom action bar from viewport bottom without shrinking the card stage (fixed bar + reserved padding) */
        --vocab-mobile-footer-lift: 2cm;
        /* Reserve only the fixed bar height (+ safe) so cards do not draw under it — lift gap is via bottom:, not padding */
        --vocab-mobile-footer-action-reserve: calc(7.25rem + env(safe-area-inset-bottom, 0px));
    }
    .vocabulary-index-page.vocab-mobile-expanded #vocab-flashcard-study-shell {
        position: fixed;
        inset: 0;
        z-index: 10070;
        display: grid !important;
        grid-template-rows: minmax(0, 1fr);
        grid-template-columns: minmax(0, 1fr);
        margin: 0 !important;
        padding: 0 0.65rem 0;
        background:
            radial-gradient(circle at top, rgba(182, 0, 0, 0.08), transparent 34%),
            linear-gradient(180deg, #f8fafc 0%, #fff7f5 100%);
        overflow-x: auto;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }
    .vocabulary-index-page.vocab-mobile-expanded #vocabulary-stack-wrap {
        display: flex !important;
        flex-direction: column;
        min-height: calc(var(--vocab-stack-card-h, 448px) + var(--vocab-mobile-footer-action-reserve) + 0.65rem) !important;
        height: auto;
        width: max(100%, calc(var(--vocab-stack-card-w, 340px) + 1.3rem));
        max-width: none;
        flex: 1 1 auto;
        padding-top: 0.15rem;
        /* Reserve space for fixed footer row only (same vertical budget as in-flow footer; 4cm lift is not taken from card column) */
        padding-bottom: var(--vocab-mobile-footer-action-reserve);
        padding-inline: 0;
        margin: 0;
        overflow: visible;
    }
    .vocabulary-index-page.vocab-mobile-expanded .vocab-study-mode-toggle,
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded .vocab-study-mode-toggle {
        flex: 0 0 auto;
        width: min(100%, 460px);
        margin: 1.05rem auto 0.25rem;
        padding-inline: 0.4rem;
        position: relative;
        z-index: 10090;
    }
    /* تعليق عربي: ترتيب علوي خاص بتصميم السحب داخل التكبير فقط؛ لا يمس هيدر الموقع. */
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .vocab-stack-focus-counters {
        display: none !important;
        height: 0 !important;
        min-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: hidden !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .vocab-study-mode-toggle {
        width: min(100%, 460px);
        margin: calc(34px + env(safe-area-inset-top, 0px)) auto 4px !important;
        padding-inline: 0.4rem;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .vocab-study-mode-toggle__buttons {
        gap: 0.2rem !important;
        padding: 0.16rem !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .vocab-study-mode-toggle__btn {
        min-height: 0 !important;
        padding: 0.3rem 0.62rem !important;
        font-size: 0.78rem !important;
        line-height: 1 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe #stack-mobile-top-actions {
        position: static !important;
        display: flex !important;
        align-items: center !important;
        justify-content: flex-start !important;
        width: auto !important;
        min-height: 0 !important;
        height: auto !important;
        margin: 0 0 4px 0 !important;
        padding: 0 !important;
        transform: none !important;
        top: auto !important;
        bottom: auto !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe #stack-mobile-top-actions #stack-expand-btn {
        position: static !important;
        transform: none !important;
        margin: 0 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .vocabulary-simple-wrap,
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded .vocabulary-simple-wrap {
        flex: 1 1 auto;
        min-height: 0;
        display: flex;
        align-items: stretch;
        justify-content: center;
    }
    .vocabulary-index-page.vocab-mobile-expanded .vocabulary-simple-card-stage,
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded .vocabulary-simple-card-stage {
        width: min(100%, 460px);
        display: flex;
        flex-direction: column;
        min-height: 0;
    }
    .vocabulary-index-page.vocab-mobile-expanded .vocabulary-simple-card,
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded .vocabulary-simple-card {
        flex: 1 1 auto;
        min-height: 0;
    }
    .vocabulary-index-page.vocab-mobile-expanded #vocab-flashcard-study-stage {
        min-height: 0;
        flex: 1 1 auto;
        width: 100%;
        display: flex !important;
        align-items: flex-start;
        justify-content: center;
        overflow: visible;
        padding-top: 0.15rem;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-outer {
        height: 100%;
        max-height: 100%;
        min-height: 0;
        overflow: visible;
        display: grid !important;
        grid-template-columns: minmax(40px, 0.55fr) auto minmax(40px, 0.55fr);
        gap: 0;
        align-items: center;
        justify-items: stretch;
        width: 100%;
        direction: ltr;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-outer {
        height: 100%;
        max-height: 100%;
        min-height: 0;
        overflow: visible;
        display: flex !important;
        justify-content: center;
        align-items: stretch;
        position: relative;
        width: 100%;
        direction: ltr;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-center {
        grid-column: 2;
        justify-self: center;
        width: var(--vocab-stack-card-w, 340px);
        max-width: var(--vocab-stack-card-w, 340px);
        min-width: var(--vocab-stack-card-w, 340px);
        flex: unset;
        margin: 0 auto;
        overflow: visible;
        position: relative;
        z-index: 2;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-center {
        width: var(--vocab-stack-card-w, 340px);
        max-width: var(--vocab-stack-card-w, 340px);
        min-width: var(--vocab-stack-card-w, 340px);
        flex: 0 0 var(--vocab-stack-card-w, 340px);
        margin: 0 auto;
        overflow: visible;
        position: relative;
        z-index: 2;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-right {
        display: flex !important;
        align-self: center;
        min-width: 0;
        min-height: min(52vh, var(--vocab-stack-card-h, 420px));
        position: static;
        transform: none;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-left {
        grid-column: 1;
        align-items: center;
        justify-content: flex-start;
        padding-inline-start: clamp(8px, 2.8vw, 28px);
        padding-inline-end: 10px;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-right {
        grid-column: 3;
        align-items: center;
        justify-content: flex-end;
        padding-inline-end: clamp(8px, 2.8vw, 28px);
        padding-inline-start: 10px;
    }
    /* موبايل مكبّر + تصميم السحب: إخفاء التلميحات المرئية (المسافات الجانبية، السهم للأعلى، الساعة) مع الإبقاء على منطق السحب. */
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-spacer-right,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-up-hint,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-decorative-clock-wrap {
        display: none !important;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 0.45rem;
        width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        min-height: min(58vh, var(--vocab-stack-card-h, 448px));
        margin: 0.75rem auto 0.85rem;
        padding: 1.25rem;
        border: 1px solid rgba(182, 0, 0, 0.18);
        border-radius: 22px;
        background: linear-gradient(180deg, #ffffff 0%, #fff7f5 100%);
        color: #7f1d1d;
        text-align: center;
        box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
        cursor: pointer;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card__icon {
        width: 3rem;
        height: 3rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 999px;
        background: rgba(182, 0, 0, 0.08);
        color: #B60000;
        font-size: 1.65rem;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card__title {
        font-size: 1.05rem;
        font-weight: 800;
        line-height: 1.35;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card__hint {
        color: #64748b;
        font-size: 0.86rem;
        font-weight: 600;
        line-height: 1.45;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card__loading {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.45rem;
        margin-top: 0.15rem;
        color: #B60000;
        font-size: 0.88rem;
        font-weight: 800;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card[disabled],
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card[aria-busy="true"] {
        cursor: wait;
        opacity: 0.82;
        pointer-events: none;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded) .vocab-mobile-focus-card[aria-busy="true"] .vocab-mobile-focus-card__icon i {
        animation: vocab-mobile-focus-spin 0.85s linear infinite;
    }
    @keyframes vocab-mobile-focus-spin {
        to {
            transform: rotate(360deg);
        }
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .vocab-flashcard-study-stage,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .stack-decorative-clock-wrap,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe #stack-dots-wrap,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .stack-focus-intro-text,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe #vocab-study-mode-toggle-mount,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .vocab-stack-actions-chrome {
        display: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .vocab-mobile-focus-card,
    .vocabulary-index-page.vocab-study-mode-simple .vocab-mobile-focus-card {
        display: none !important;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .vocab-flashcard-study-stage--empty,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .vocab-flashcard-study-stage:has(#stack-empty:not([style*="display: none"])) {
        display: flex !important;
    }
    /* موبايل عادي (غير مكبّر): إخفاء التلميحات الجانبية فقط؛ تلميح «نسيتها 3 أيام» يظهر من 768px+ فوق/تحت البطاقة. */
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-zone-spacer-left,
    .vocabulary-index-page:not(.vocab-mobile-expanded) .stack-zone-spacer-right {
        display: none !important;
    }
    /* تعليق عربي: في الموبايل العادي تلميحات السحب مخفية — البطاقة في منتصف الشاشة دون أعمدة جانبية. */
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .stack-zone-outer {
        display: flex !important;
        justify-content: center !important;
        align-items: flex-start;
        width: 100%;
        max-width: 100%;
        padding-inline: 0;
        overflow-x: hidden;
        grid-template-columns: none !important;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .stack-zone-center {
        flex: 0 0 auto;
        width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        min-width: 0;
        max-width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        margin-inline: auto;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .vocabulary-stack {
        width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        min-width: 0;
        max-width: min(var(--vocab-stack-card-w, 340px), calc(100vw - 2rem));
        margin-inline: auto;
    }

    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe #vocab-flashcard-study-shell,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe #vocabulary-stack-wrap,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe #vocab-flashcard-study-stage,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .stack-zone-outer,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .stack-zone-center,
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe .vocabulary-stack {
        overflow: visible;
    }

    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-swipe #vocabulary-stack .stack-card.vocab-card--active {
        z-index: 120 !important;
    }

    #lesson-flashcards-section.lesson-flashcards-section--course-linked {
        --vocab-stack-card-w: min(340px, calc(100vw - 2rem));
        --vocab-stack-card-h: clamp(360px, calc(100dvh - var(--dms-fixed-header-height, 72px) - 220px), 448px);
        --vocab-stack-tail-space: 0px;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .vocab-flashcard-study-shell {
        --vocab-stack-tail-space: 0px;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .vocabulary-stack-wrap {
        position: relative;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .vocab-flashcard-study-stage {
        position: relative;
        z-index: 1;
        padding-bottom: 0;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-center {
        padding-bottom: 0;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-card.vocab-card--active .stack-card-simple-meaning-btn.stack-card-flip-btn {
        display: none !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .lesson-flashcard-counters-wrap {
        max-width: var(--vocab-stack-card-w, 340px);
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-spacer-left,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-spacer-right,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-left-icon,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-right-icon,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-up-hint,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-decorative-clock-wrap {
        display: none !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-outer {
        display: flex !important;
        justify-content: center !important;
        align-items: flex-start;
        width: 100%;
        max-width: 100%;
        padding-inline: 0;
        overflow-x: visible;
        grid-template-columns: none !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-zone-center,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .vocabulary-stack {
        width: var(--vocab-stack-card-w, 340px);
        min-width: 0;
        max-width: var(--vocab-stack-card-w, 340px);
        margin-inline: auto;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .vocabulary-stack {
        min-height: calc(var(--vocab-stack-card-h, 448px) + 6px);
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-report {
        display: grid !important;
        grid-template-columns: minmax(0, 1fr);
        gap: 0.3rem;
        overflow: visible;
        position: relative;
        z-index: 40;
        margin-top: 0.5rem !important;
        isolation: isolate;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-report .stack-footer-nav,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-report .stack-undo-shuffle-group,
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-report .stack-footer-row--tts {
        grid-column: 1 / -1;
        width: 100%;
        min-width: 0;
        overflow: visible;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-report .stack-footer-nav {
        order: 1;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-report .stack-undo-shuffle-group {
        display: flex;
        flex-direction: column;
        gap: 0.3rem;
        order: 2;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-row--controls {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.3rem;
        direction: rtl;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-row--controls .stack-footer-nav__btn {
        width: 100%;
        min-width: 0;
        flex-direction: row;
        gap: 0.35rem;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-row--controls .stack-footer-flip-btn {
        display: inline-flex !important;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-row--controls .stack-footer-flip-btn .stack-card-flip-btn__icon {
        margin: 0;
    }
    #lesson-flashcards-section.lesson-flashcards-section--course-linked .stack-footer-row--controls .stack-footer-flip-btn[aria-expanded="true"] .stack-card-flip-btn__icon {
        transform: rotate(180deg);
    }

    /* تعليق عربي: في تصميم الأزرار المصغّر نطابق عرض الحاوية مع عرض البطاقة حتى لا تُقصّ الأطراف. */
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-simple .stack-zone-outer {
        width: var(--vocab-stack-card-w, 340px);
        max-width: min(100%, var(--vocab-stack-card-w, 340px));
        margin-inline: auto;
        overflow-x: visible;
    }
    .vocabulary-index-page:not(.vocab-mobile-expanded).vocab-study-mode-simple .stack-zone-center {
        flex: 0 0 var(--vocab-stack-card-w, 340px);
        width: var(--vocab-stack-card-w, 340px);
        min-width: 0;
        max-width: var(--vocab-stack-card-w, 340px);
        margin-inline: auto;
    }
    /* درس مضمّن: شبكة للسحب فقط؛ البسيط يبقى مضغوطاً */
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-outer {
        height: 100%;
        max-height: 100%;
        min-height: 0;
        overflow: visible;
        display: grid !important;
        grid-template-columns: minmax(40px, 0.55fr) auto minmax(40px, 0.55fr);
        gap: 0;
        align-items: center;
        justify-items: stretch;
        width: 100%;
        direction: ltr;
    }
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded.lesson-flashcards-section--simple-mode .stack-zone-outer {
        height: 100%;
        max-height: 100%;
        min-height: 0;
        overflow: visible;
        display: flex !important;
        justify-content: center;
        align-items: stretch;
        position: relative;
        width: 100%;
        direction: ltr;
    }
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-center {
        grid-column: 2;
        justify-self: center;
        width: var(--vocab-stack-card-w, 340px);
        max-width: var(--vocab-stack-card-w, 340px);
        min-width: var(--vocab-stack-card-w, 340px);
        flex: unset;
        margin: 0 auto;
        overflow: visible;
        position: relative;
        z-index: 2;
    }
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded.lesson-flashcards-section--simple-mode .stack-zone-center {
        width: var(--vocab-stack-card-w, 340px);
        max-width: var(--vocab-stack-card-w, 340px);
        min-width: var(--vocab-stack-card-w, 340px);
        flex: 0 0 var(--vocab-stack-card-w, 340px);
        margin: 0 auto;
        overflow: visible;
        position: relative;
        z-index: 2;
    }
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-left,
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-right {
        display: flex !important;
        align-self: center;
        min-width: 0;
        min-height: min(52vh, var(--vocab-stack-card-h, 420px));
        position: static;
        transform: none;
    }
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-left {
        grid-column: 1;
        align-items: center;
        justify-content: flex-start;
        padding-inline-start: clamp(8px, 2.8vw, 28px);
        padding-inline-end: 10px;
    }
    #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-spacer-right {
        grid-column: 3;
        align-items: center;
        justify-content: flex-end;
        padding-inline-end: clamp(8px, 2.8vw, 28px);
        padding-inline-start: 10px;
    }
    @media (max-width: 575.98px) {
        .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-outer {
            grid-template-columns: 1fr auto 1fr !important;
        }
        .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-icon {
            opacity: 0.78;
        }
        .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-icon small,
        .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-swipe .stack-zone-left-icon .stack-zone-label-two-lines {
            display: block !important;
            font-size: max(10px, 0.58em) !important;
            line-height: 1.25 !important;
        }
        #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-outer {
            grid-template-columns: 1fr auto 1fr !important;
        }
        #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-icon {
            opacity: 0.78;
        }
        #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-icon small,
        #lesson-flashcards-section.lesson-flashcards-section--mobile-expanded:not(.lesson-flashcards-section--simple-mode) .stack-zone-left-icon .stack-zone-label-two-lines {
            display: block !important;
            font-size: max(10px, 0.58em) !important;
            line-height: 1.25 !important;
        }
    }
    .vocabulary-index-page.vocab-mobile-expanded .vocabulary-stack {
        width: var(--vocab-stack-card-w, 340px);
        min-width: var(--vocab-stack-card-w, 340px);
        max-width: var(--vocab-stack-card-w, 340px);
        margin: 0 auto;
        min-height: calc(var(--vocab-stack-card-h, 448px) + var(--vocab-stack-tail-space, 34px));
        overflow: visible;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card,
    .vocabulary-index-page.vocab-mobile-expanded .stack-card * {
        touch-action: none;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-back-scroll,
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-front-scroll {
        touch-action: none;
        transform: none;
        -webkit-transform: none;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-front {
        transform: rotateY(0deg) !important;
        -webkit-transform: rotateY(0deg) !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-back {
        display: flex !important;
        transform: rotateY(180deg) !important;
        -webkit-transform: rotateY(180deg) !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-flip,
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.flipped .stack-card-flip {
        transform: none !important;
        -webkit-transform: none !important;
        transform-style: flat !important;
        -webkit-transform-style: flat !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-front,
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-back {
        transform-origin: center center;
        -webkit-transform-origin: center center;
        backface-visibility: visible !important;
        -webkit-backface-visibility: visible !important;
        transition: opacity 0.2s ease, transform 0.26s cubic-bezier(0.22, 0.61, 0.36, 1);
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-front {
        opacity: 1 !important;
        visibility: visible !important;
        transform: scaleX(1) !important;
        -webkit-transform: scaleX(1) !important;
        pointer-events: auto !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card .stack-card-back {
        opacity: 0 !important;
        visibility: visible !important;
        transform: scaleX(0.08) !important;
        -webkit-transform: scaleX(0.08) !important;
        pointer-events: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.flipped .stack-card-front {
        opacity: 0 !important;
        visibility: visible !important;
        transform: scaleX(0.08) !important;
        -webkit-transform: scaleX(0.08) !important;
        pointer-events: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.flipped .stack-card-back {
        opacity: 1 !important;
        visibility: visible !important;
        transform: scaleX(1) !important;
        -webkit-transform: scaleX(1) !important;
        pointer-events: auto !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.ios-flat-flip .stack-card-flip,
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.ios-flat-flip.flipped .stack-card-flip {
        transform: none !important;
        -webkit-transform: none !important;
        transform-style: flat !important;
        -webkit-transform-style: flat !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.ios-flat-flip .stack-card-front {
        transform: scaleX(1) !important;
        -webkit-transform: scaleX(1) !important;
        opacity: 1 !important;
        visibility: visible !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.ios-flat-flip .stack-card-back {
        transform: scaleX(0.08) !important;
        -webkit-transform: scaleX(0.08) !important;
        opacity: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.ios-flat-flip.flipped .stack-card-front {
        transform: scaleX(0.08) !important;
        -webkit-transform: scaleX(0.08) !important;
        opacity: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-card.ios-flat-flip.flipped .stack-card-back {
        transform: scaleX(1) !important;
        -webkit-transform: scaleX(1) !important;
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
    }
    /* JS sets --stack-visual-index (0..n); cap visual stack depth so tail does not grow with 20+ cards */
    .vocabulary-index-page.vocab-mobile-expanded #vocabulary-stack .stack-card:not(.stack-see-more-back):not(.stack-card-removed) {
        top: calc(min(var(--stack-visual-index, 0), var(--vocab-mobile-stack-layer-max)) * var(--vocab-mobile-stack-layer-step)) !important;
    }
    /* Collapse control lives in #stack-mobile-top-actions (JS); footer = Previous row + Shuffle/Report row only */
    .stack-mobile-top-actions {
        display: none;
        flex-shrink: 0;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-mobile-top-actions {
        display: flex;
        justify-content: flex-start;
        align-items: center;
        width: 100%;
        padding: 0.35rem 0 0.25rem;
        z-index: 10075;
        box-sizing: border-box;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-mobile-top-actions .stack-expand-btn {
        min-height: 36px;
        padding: 0.3rem 0.75rem;
        border-radius: 999px;
        font-size: 0.82rem;
        line-height: 1;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.35rem;
        font-weight: 700;
        border: 1px solid #B60000 !important;
        background: #fff !important;
        color: #B60000 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-mobile-top-actions .stack-expand-btn:focus-visible {
        outline: 2px solid rgba(255, 255, 255, 0.35);
        outline-offset: 2px;
    }
    /* Bottom action bar: fixed 4cm above screen bottom */
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-report {
        display: flex !important;
        flex-direction: column;
        align-items: stretch;
        gap: 0.4rem;
        width: auto;
        max-width: 100%;
        margin: 0 !important;
        margin-top: 0 !important;
        padding: 0.45rem 0 0;
        background: #f8fafc;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border-top: 1px solid rgba(148, 163, 184, 0.28);
        position: fixed;
        left: 0.65rem;
        right: 0.65rem;
        bottom: calc(env(safe-area-inset-bottom, 0px) + var(--vocab-mobile-footer-lift));
        z-index: 10074;
        box-sizing: border-box;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-report .stack-footer-expand-slot {
        display: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-report .stack-flip-first-msg {
        display: none !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-nav {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        width: 100%;
        gap: 0.45rem;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-nav .stack-footer-row {
        display: flex;
        width: 100%;
        gap: 0.45rem;
        align-items: stretch;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-nav .stack-footer-row--simple-status {
        grid-column: 1 / -1;
        display: none;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.45rem;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-footer-nav .stack-footer-row--simple-status {
        display: grid;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-nav .stack-footer-row--controls {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.45rem;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-nav .stack-footer-row--controls .btn {
        width: 100%;
        max-width: none;
        min-height: 42px;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-report .btn {
        border-radius: 10px;
        font-size: 0.82rem;
        font-weight: 700;
        line-height: 1.15;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.3rem;
        white-space: nowrap;
        overflow: hidden;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-report .tts-speed-control__trigger {
        min-height: 42px;
        border-radius: 10px;
        font-size: 0.82rem;
        font-weight: 700;
        line-height: 1.15;
        white-space: nowrap;
        overflow: hidden;
    }
    .vocabulary-index-page.vocab-mobile-expanded .tts-speed-control.is-open .tts-speed-control__panel {
        display: flex !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded .stack-footer-report .btn i {
        font-size: 1rem;
        margin: 0;
        line-height: 1;
        flex-shrink: 0;
    }
    /* Course chat: above lifted footer bar */
    .vocabulary-index-page.vocab-mobile-expanded .course-chat-floating.js-course-chat-floating {
        z-index: 10080;
        bottom: calc(env(safe-area-inset-bottom, 0px) + var(--vocab-mobile-footer-lift) + 4.25rem) !important;
    }
    body.vocab-focus-expanded-lock .course-chat-floating.js-course-chat-floating,
    html.vocab-focus-expanded-lock .course-chat-floating.js-course-chat-floating {
        display: none !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }
    /* التصميم البسيط داخل التكبير: ترتيب علوي مضغوط بدون حذف عناصر DOM أو تغيير منطق البطاقات. */
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple {
        --vocab-focus-header-h: 0px !important;
        --vocab-study-bottom-clearance: 8px !important;
        --vocab-mobile-footer-action-reserve: calc(7.25rem + env(safe-area-inset-bottom, 0px));
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocab-flashcard-study-shell {
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        justify-content: flex-start !important;
        padding: 0 0.65rem 0 !important;
        margin: 0 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocab-stack-focus-header {
        display: flex !important;
        height: auto !important;
        min-height: 0 !important;
        max-height: none !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: visible !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .vocab-stack-focus-counters,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-focus-intro-text,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-decorative-clock-wrap,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #stack-dots-wrap,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-spacer-right,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-up-hint {
        display: none !important;
        height: 0 !important;
        min-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: hidden !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocab-study-mode-toggle-mount {
        flex: 0 0 auto !important;
        width: min(100%, 460px) !important;
        margin: calc(34px + env(safe-area-inset-top, 0px)) auto 4px !important;
        padding: 0 0.4rem !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocab-study-mode-toggle-mount .vocab-study-mode-toggle__buttons {
        gap: 0.2rem !important;
        padding: 0.16rem !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocab-study-mode-toggle-mount .vocab-study-mode-toggle__btn {
        min-height: 0 !important;
        padding: 0.3rem 0.62rem !important;
        font-size: 0.78rem !important;
        line-height: 1 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocabulary-stack-wrap {
        display: flex !important;
        flex: 1 1 auto !important;
        flex-direction: column !important;
        justify-content: flex-start !important;
        width: max(100%, calc(var(--vocab-stack-card-w, 340px) + 1.3rem)) !important;
        min-height: 0 !important;
        height: auto !important;
        margin: 0 !important;
        padding: 0 0 var(--vocab-mobile-footer-action-reserve) !important;
        overflow: visible !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #stack-mobile-top-actions {
        position: static !important;
        display: flex !important;
        align-items: center !important;
        justify-content: flex-start !important;
        min-height: 0 !important;
        height: auto !important;
        margin: 0 0 4px 0 !important;
        padding: 0 !important;
        transform: none !important;
        top: auto !important;
        bottom: auto !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #stack-mobile-top-actions #stack-expand-btn {
        position: static !important;
        transform: none !important;
        margin: 0 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocab-flashcard-study-stage {
        display: flex !important;
        flex: 1 1 auto !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        min-height: 0 !important;
        height: auto !important;
        margin: 0 !important;
        padding: 0 !important;
        gap: 0 !important;
        overflow: visible !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-outer,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-center,
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple #vocabulary-stack {
        margin-top: 0 !important;
        padding-top: 0 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-outer {
        display: flex !important;
        justify-content: center !important;
        align-items: flex-start !important;
        height: auto !important;
        max-height: none !important;
        min-height: 0 !important;
    }
    .vocabulary-index-page.vocab-mobile-expanded.vocab-study-mode-simple .stack-zone-center {
        flex: 0 0 var(--vocab-stack-card-w, 340px) !important;
    }
        #vocab-gesture-debug-panel {
        position: fixed;
        top: max(8px, env(safe-area-inset-top, 0px) + 8px);
        left: 8px;
        right: 8px;
        z-index: 10150;
        background: rgba(15, 23, 42, 0.9);
        color: #f8fafc;
        border-radius: 10px;
        padding: 0.55rem 0.7rem;
        font: 12px/1.35 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
        white-space: pre-wrap;
        pointer-events: none;
        box-shadow: 0 10px 28px rgba(15, 23, 42, 0.28);
    }
}

/* تابلت/ديسكتوب: تلميح «نسيتها — 3 أيام» فوق وتحت البطاقة (سطر واحد). */
@media (min-width: 768px) {
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-decorative-clock-wrap:not([hidden]),
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-up-hint:not([hidden]),
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode):not(.lesson-flashcards-section--mobile-expanded) .stack-decorative-clock-wrap:not([hidden]),
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode):not(.lesson-flashcards-section--mobile-expanded) .stack-zone-up-hint:not([hidden]) {
        display: flex !important;
        justify-content: center;
        align-items: center;
        width: 100%;
    }
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-up-icon:not([hidden]),
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode):not(.lesson-flashcards-section--mobile-expanded) .stack-zone-up-icon:not([hidden]) {
        display: inline-flex !important;
        flex-direction: column;
        align-items: center;
    }
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-up-icon .stack-zone-up-lines,
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-decorative-clock .stack-zone-label-one-line,
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-zone-up-icon .stack-zone-up-lines,
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-decorative-clock .stack-zone-label-one-line,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode):not(.lesson-flashcards-section--mobile-expanded) .stack-zone-up-icon .stack-zone-up-lines,
    #lesson-flashcards-section:not(.lesson-flashcards-section--simple-mode):not(.lesson-flashcards-section--mobile-expanded) .stack-decorative-clock .stack-zone-label-one-line {
        display: block !important;
        white-space: nowrap;
    }
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-decorative-clock-wrap:not([hidden]),
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-zone-up-hint:not([hidden]) {
        display: flex !important;
        justify-content: center;
        align-items: center;
        width: 100%;
    }
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-zone-up-icon:not([hidden]) {
        display: inline-flex !important;
        flex-direction: column;
        align-items: center;
    }
}

/* ديسكتوب عريض: تلميحات السحب على أطراف البطاقة (يمين أعرفها، يسار جديدة/5 أيام). */
@media (min-width: 992px) {
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-outer {
        display: flex !important;
        align-items: stretch;
        justify-content: space-between;
        width: 100%;
        max-width: 960px;
        margin-inline: auto;
        padding-inline: 0;
    }
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-spacer-right {
        display: flex !important;
        flex: 1 1 auto;
        min-width: 140px;
        min-height: var(--vocab-stack-card-h, 448px);
        width: auto !important;
        max-width: none !important;
        margin: 0;
        padding-left: 0.5rem;
        padding-right: 0.5rem;
        overflow: visible;
    }
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-left-icon,
    .vocabulary-index-page.vocab-study-mode-swipe:not(.vocab-mobile-expanded) .stack-zone-right-icon {
        display: inline-flex !important;
    }
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-decorative-clock-wrap:not([hidden]),
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-zone-up-hint:not([hidden]) {
        display: flex !important;
        justify-content: center;
        align-items: center;
        width: 100%;
    }
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-zone-up-icon:not([hidden]) {
        display: inline-flex !important;
    }
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-zone-up-icon .stack-zone-up-lines,
    .vocabulary-index-page.vocab-study-mode-simple:not(.vocab-mobile-expanded) .stack-decorative-clock .stack-zone-label-one-line {
        display: block !important;
        white-space: nowrap;
    }
}

/* موبايل/تابلت: إخفاء التلميحات الخارجية — الأزرار السفلية كافية. */
@media (max-width: 767.98px) {
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-spacer-left,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-left-icon,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-spacer-right,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-right-icon,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-zone-up-hint,
    .vocabulary-index-page.vocab-study-mode-swipe .stack-decorative-clock-wrap {
        display: none !important;
    }
}
/* ===== vocabulary-simple.css ===== */
/*
|--------------------------------------------------------------------------
| Vocabulary Simple Mode CSS
|--------------------------------------------------------------------------
| تعليق عربي:
| هذا الملف خاص بالتصميم البسيط المعتمد على الأزرار:
| أزرار أعرفها/كرر/نسيتها، زر إظهار المعنى، وخروج البطاقة بدون سحب.
| لا تضع هنا قواعد swipe/drag إلا إذا كانت ضرورية للتوافق المؤقت.
| بعد أي تعديل هنا يجب تحديث page.css المجمّع.
*/

.vocabulary-simple-wrap {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    direction: ltr;
}

.vocabulary-simple-card-stage {
    width: 100%;
}

.vocabulary-simple-card {
    position: relative;
    width: var(--vocab-stack-card-w, 340px);
    max-width: min(100%, var(--vocab-stack-card-w, 340px));
    min-height: auto;
    height: auto;
    margin: 0 auto;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
    cursor: pointer;
}

.vocabulary-simple-card__paper {
    position: relative;
    min-height: var(--vocab-stack-card-h, 448px);
    border-radius: 8px;
    border: 1px solid #1a1a1a;
    box-shadow: 0 2px 6px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.1);
    background: var(--stack-card-face-bg, #f2ede4);
    overflow: hidden;
}

.vocabulary-simple-card--stack-look .stack-card-front,
.vocabulary-simple-card--stack-look .stack-card-back {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    min-height: var(--vocab-stack-card-h, 448px);
    transform: none !important;
    -webkit-transform: none !important;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
}

.vocabulary-simple-card__prompt,
.vocabulary-simple-card__answer {
    padding: 0.55rem 0.5rem 0.45rem;
}

.vocabulary-simple-card__prompt {
    min-height: var(--vocab-stack-card-h, 448px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    background: var(--stack-card-face-bg, #f2ede4);
    border-bottom: 0;
    border-radius: 7px;
}

.vocabulary-simple-card__front {
    width: min(100%, 620px);
    margin: 0 auto;
    text-align: center;
}

.vocabulary-simple-card__front-text {
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 800;
    color: #111827;
    line-height: 1.2;
    overflow-wrap: anywhere;
}

.vocabulary-simple-card__front-sentence {
    margin-top: 0.8rem;
    font-size: clamp(1.1rem, 3.3vw, 1.55rem);
    color: #475569;
    line-height: 1.45;
}

.vocabulary-simple-card__tap-hint {
    display: inline-flex;
    margin-top: 1rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: rgba(182, 0, 0, 0.08);
    color: #9a0000;
    font-weight: 700;
    font-size: 0.86rem;
}

.vocabulary-simple-card.is-revealed .vocabulary-simple-card__prompt {
    display: none;
}

.vocabulary-simple-card__answer {
    position: relative;
    min-height: var(--vocab-stack-card-h, 448px);
    background: var(--stack-card-back-bg, #f2ede4);
    border-radius: 7px;
    transform: none !important;
    -webkit-transform: none !important;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
}

.vocabulary-simple-card__answer[hidden],
.vocabulary-simple-actions[hidden] {
    display: none !important;
}

.vocabulary-simple-card__answer-scroll {
    max-height: calc(var(--vocab-stack-card-h, 448px) - 1.25rem);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    text-align: center;
}

.vocabulary-simple-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
    padding: 0.9rem;
    border-top: 1px solid rgba(148, 163, 184, 0.25);
    background: #f8fafc;
    border-radius: 0 0 8px 8px;
}

.vocabulary-simple-status-btn {
    min-height: 64px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    border-radius: 16px;
    font-weight: 800;
    line-height: 1.05;
    color: #fff !important;
    border: 0 !important;
    white-space: normal;
    text-align: center;
}

.vocabulary-simple-status-btn i {
    display: none;
}

.vocabulary-simple-status-btn span,
.vocabulary-simple-status-btn small {
    display: block;
    color: inherit;
    width: 100%;
}

.vocabulary-simple-status-btn span {
    font-size: 0.92rem;
    line-height: 1.05;
}

.vocabulary-simple-status-btn small {
    opacity: 0.92;
    font-weight: 700;
    font-size: 0.74rem;
    line-height: 1.05;
}

.vocabulary-simple-status-btn--known {
    background: linear-gradient(135deg, #16a34a, #15803d) !important;
}

.vocabulary-simple-status-btn--repeat3 {
    background: linear-gradient(135deg, #f59e0b, #d97706) !important;
}

.vocabulary-simple-status-btn--repeat5 {
    background: linear-gradient(135deg, #B60000, #8f0000) !important;
}

.vocabulary-simple-empty {
    min-height: 220px;
    align-items: center;
    justify-content: center;
}

.vocab-stack-simple-actions {
    display: none;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
    width: min(100%, 540px);
    margin: 0.75rem auto 0;
    position: relative;
    z-index: 50;
    direction: ltr;
}

.vocab-study-mode-simple .vocab-stack-simple-actions,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .vocab-stack-simple-actions {
    display: grid;
}

/* في التصميم البسيط نخفي كل تلميحات السحب، وتبقى الأجوبة عبر الأزرار فقط. */
.vocab-study-mode-simple .stack-swipe-strip,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-swipe-strip,
.vocab-study-mode-simple .stack-zone-spacer-left,
.vocab-study-mode-simple .stack-zone-spacer-right,
.vocab-study-mode-simple .stack-zone-up-hint,
.vocab-study-mode-simple .stack-decorative-clock-wrap,
.vocab-study-mode-simple .stack-focus-intro-text,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-zone-spacer-left,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-zone-spacer-right,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-zone-up-hint,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-decorative-clock-wrap,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-focus-intro-text {
    display: none !important;
}

.stack-card-simple-meaning-btn {
    display: none;
}

/* Flip button in simple mode: footer control (card button hidden via page.css). */
.stack-footer-flip-btn {
    display: none !important;
}

.vocab-study-mode-simple .stack-footer-flip-btn,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-footer-flip-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    min-height: 2.45rem;
    width: 100%;
    border-radius: 12px;
    font-weight: 700;
    line-height: 1.15;
    flex-direction: row;
}

.vocab-study-mode-simple .stack-footer-row--flip,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-footer-row--flip {
    width: 100%;
    flex: 0 0 100%;
}

.vocab-study-mode-simple #vocabulary-stack .stack-card .stack-card-simple-meaning-btn,
.vocab-study-mode-simple #vocabulary-stack .stack-card .stack-card-flip-btn,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-card .stack-card-simple-meaning-btn,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-card .stack-card-flip-btn {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

.vocab-study-mode-simple .stack-footer-flip-btn .stack-card-flip-btn__icon,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-footer-flip-btn .stack-card-flip-btn__icon {
    font-size: 1.05rem;
    margin: 0;
    transition: transform 0.28s ease;
}

.vocabulary-index-page.vocab-study-mode-simple .stack-footer-report #stack-footer-flip-btn i {
    margin: 0;
}

.vocab-study-mode-simple .stack-footer-flip-btn[aria-expanded="true"] .stack-card-flip-btn__icon,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-footer-flip-btn[aria-expanded="true"] .stack-card-flip-btn__icon {
    transform: rotate(180deg);
}

@keyframes stack-footer-flip-btn-shine {
    0% {
        box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
        transform: scale(1);
    }
    40% {
        box-shadow: 0 0 0 3px rgba(182, 0, 0, 0.32), 0 0 20px 5px rgba(255, 196, 0, 0.45);
        transform: scale(1.07);
    }
    100% {
        box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
        transform: scale(1);
    }
}

.stack-footer-flip-btn.stack-card-flip-btn--nudge {
    animation: stack-footer-flip-btn-shine 0.95s ease-out 2;
}

.stack-card-simple-exit {
    opacity: 0 !important;
    transition: opacity 0.32s ease, transform 0.34s cubic-bezier(0.22, 1, 0.36, 1) !important;
    pointer-events: none !important;
}

.stack-card-simple-exit--right {
    transform: translateX(120%) rotate(14deg) !important;
}

.stack-card-simple-exit--left {
    transform: translateX(-120%) rotate(-14deg) !important;
}

.stack-card-simple-exit--up {
    transform: translateY(-120%) rotate(-7deg) !important;
}


.vocab-study-mode-simple .stack-zone-outer,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-zone-outer {
    display: flex;
    justify-content: center;
    align-items: stretch;
    position: relative;
    width: 100%;
    max-width: 100%;
    min-height: 0;
    padding: 0;
    gap: 0;
}

.vocab-study-mode-simple .stack-zone-center,
#lesson-flashcards-section.lesson-flashcards-section--simple-mode .stack-zone-center {
    position: relative;
    z-index: 2;
    margin-left: auto;
    margin-right: auto;
}

/* ===== تذييل البطاقات (ثلاث صفوف + أدوات) ===== */
.vocabulary-index-page .stack-footer-report.stack-footer-report--three-rows {
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    gap: 0.55rem;
    width: 100%;
    max-width: 100%;
    margin-top: 0.5rem !important;
    padding: 0.6rem 0.55rem 0.65rem;
    border: 1px solid rgba(15, 23, 42, 0.1);
    border-radius: 16px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
    grid-template-columns: minmax(0, 1fr) !important;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row {
    display: grid;
    width: 100%;
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--flip {
    grid-template-columns: minmax(0, 1fr);
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-flip-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    min-height: 2.5rem;
    padding: 0.45rem 0.75rem;
    border-radius: 12px;
    border: 1px solid rgba(182, 0, 0, 0.28) !important;
    background: #fff !important;
    color: #9a0000 !important;
    font-weight: 700;
    font-size: 0.88rem;
    line-height: 1.2;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-flip-btn:hover:not(:disabled),
.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-flip-btn:focus-visible:not(:disabled) {
    background: rgba(182, 0, 0, 0.06) !important;
    border-color: rgba(182, 0, 0, 0.45) !important;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.4rem;
    direction: rtl;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status .vocabulary-simple-status-btn {
    min-height: 58px;
    padding: 0.4rem 0.35rem;
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status .vocabulary-simple-status-btn span {
    font-size: clamp(0.72rem, 2.8vw, 0.88rem);
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status .vocabulary-simple-status-btn small {
    font-size: clamp(0.64rem, 2.4vw, 0.72rem);
    opacity: 0.95;
}

.vocabulary-index-page .stack-footer-report--three-rows .vocabulary-simple-status-btn--new-words-only,
.vocabulary-index-page .stack-footer-report--three-rows .vocabulary-simple-status-btn--repeat3:disabled {
    background: #e2e8f0 !important;
    border-color: #cbd5e1 !important;
    color: #64748b !important;
    box-shadow: none !important;
    cursor: not-allowed;
    opacity: 1;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    padding-inline: 0.12rem;
}

.vocabulary-index-page .stack-footer-report--three-rows .vocabulary-simple-status-btn--new-words-only i,
.vocabulary-index-page .stack-footer-report--three-rows .vocabulary-simple-status-btn--repeat3:disabled i {
    display: none;
}

.vocabulary-index-page .stack-footer-report--three-rows .vocabulary-simple-status-btn--new-words-only span,
.vocabulary-index-page .stack-footer-report--three-rows .vocabulary-simple-status-btn--repeat3:disabled span {
    display: block;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    font-size: clamp(0.56rem, 1.9vw, 0.68rem);
    line-height: 1.2;
    font-weight: 600;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
    hyphens: auto;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.35rem;
    direction: rtl;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls .stack-footer-nav__btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    width: 100%;
    min-height: 2.35rem;
    margin: 0;
    padding: 0.35rem 0.25rem;
    border-radius: 10px;
    border: 1px solid rgba(15, 23, 42, 0.12) !important;
    background: #fff !important;
    color: #334155 !important;
    font-size: 0.76rem;
    font-weight: 600;
    line-height: 1.1;
    white-space: normal;
    text-align: center;
    box-shadow: none;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls .stack-footer-nav__btn:hover:not(:disabled),
.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls .stack-footer-nav__btn:focus-visible:not(:disabled) {
    background: #f1f5f9 !important;
    border-color: rgba(182, 0, 0, 0.22) !important;
    color: #9a0000 !important;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls .stack-footer-nav__btn:disabled {
    opacity: 0.5;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls .stack-footer-nav__btn i {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
    padding: 0.35rem;
    border: 1px solid rgba(182, 0, 0, 0.14);
    border-radius: 999px;
    background: rgba(182, 0, 0, 0.04);
    direction: ltr;
}

.vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--settings-single {
    grid-template-columns: minmax(0, 1fr);
}

/* إلغاء تموضع الشبكة القديمة (4 أعمدة) على الأزرار داخل التذييل الجديد */
.vocabulary-index-page .stack-footer-report--three-rows #stack-undo-btn,
.vocabulary-index-page .stack-footer-report--three-rows #stack-shuffle-btn,
.vocabulary-index-page .stack-footer-report--three-rows #stack-report-error-btn,
.vocabulary-index-page .stack-footer-report--three-rows #stack-expand-btn {
    grid-column: auto !important;
    grid-row: auto !important;
    width: 100% !important;
    min-width: 0;
}

@media (max-width: 767.98px) {
    .vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status.vocab-stack-simple-actions {
        grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
        width: 100% !important;
        max-width: 100%;
        margin-top: 0 !important;
    }

    .vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status .vocabulary-simple-status-btn {
        min-height: 54px;
        flex-direction: column;
    }

    .vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--controls .stack-footer-nav__btn {
        min-height: 2.2rem;
        font-size: 0.72rem;
    }
}

@media (min-width: 768px) {
    .vocabulary-index-page .stack-footer-report.stack-footer-report--three-rows {
        padding: 0.7rem 0.65rem 0.75rem;
        gap: 0.6rem;
    }

    .vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status .vocabulary-simple-status-btn {
        min-height: 62px;
    }

    .vocabulary-index-page .stack-footer-report--three-rows .stack-footer-row--status .vocabulary-simple-status-btn span {
        font-size: 0.86rem;
    }
}