.course-lesson-content-item.search-match > .course-lesson-content-row > .course-lesson-content-link {
        border-color: #e8b84d !important;
        box-shadow: 0 0 0 2px rgba(232, 184, 77, 0.22), 0 0 18px rgba(232, 184, 77, 0.16) !important;
    }
    .course-lesson-content-item.search-focus > .course-lesson-content-row > .course-lesson-content-link {
        border: 2px solid #b60000 !important;
        box-shadow: 0 0 0 2px rgba(182, 0, 0, 0.24), 0 0 14px rgba(182, 0, 0, 0.22) !important;
    }

    /* Section tabs wrap into chips without horizontal scroll. */
    .course-sections-tabs-wrap {
        margin-bottom: 0.9rem;
        overflow: visible !important;
    }
    /* Toolbar (watch mobile) + section tabs stack under the video column */
    .course-view-inner-right .course-sections-sticky-head {
        position: sticky;
        top: 0;
        z-index: 9;
        background: #fff;
        padding-top: 0.2rem;
        padding-bottom: 0.2rem;
        box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
    }
    .course-view-inner-right .watch-mobile-list-toolbar {
        display: flex;
        flex-direction: column;
        gap: 8px;
        margin-bottom: 0.5rem;
    }
    .course-view-inner-right .watch-mobile-list-toolbar .watch-quick-nav {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 6px;
        min-width: 0;
    }
    .course-view-inner-right .watch-mobile-list-toolbar .btn.watch-quick-nav__btn {
        min-height: 30px;
        height: 30px;
        max-height: 30px;
        padding: 0 8px;
        border-radius: 7px;
        display: inline-flex;
        align-items: center;
        justify-content: flex-start;
        gap: 4px;
        overflow: hidden;
        font-size: 0.68rem;
        font-weight: 700;
        line-height: 1;
        white-space: nowrap;
        text-align: start;
    }
    .course-view-inner-right .watch-mobile-list-toolbar .btn.watch-quick-nav__btn i {
        font-size: 0.9rem;
        line-height: 1;
        flex: 0 0 auto;
    }
    .course-view-inner-right .watch-mobile-list-toolbar .btn.watch-quick-nav__btn span {
        display: block;
        flex: 1 1 auto;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        line-height: 1;
    }
    .course-view-inner-right .watch-mobile-list-toolbar .watch-quick-tools__search .course-content-search {
        margin-bottom: 0;
    }
    @media (max-width: 420px) {
        .course-view-inner-right .watch-mobile-list-toolbar .watch-quick-nav {
            grid-template-columns: 1fr;
            gap: 4px;
        }
        .course-view-inner-right .watch-mobile-list-toolbar .btn.watch-quick-nav__btn {
            height: 28px;
            min-height: 28px;
            max-height: 28px;
            font-size: 0.64rem;
            padding: 0 7px;
        }
    }
    .course-sections-tabs {
        display: flex;
        flex-wrap: wrap !important;
        gap: 0.55rem;
        min-width: 100% !important;
        width: 100%;
        background: #f8fafc;
        border: 1px solid #e9eef5;
        border-radius: 18px;
        padding: 0.7rem;
        box-shadow: 0 4px 18px rgba(15, 23, 42, 0.05);
        /* Keep theme active styles from flashing over the chip colors. */
        --bs-nav-pills-link-active-bg: #ffffff;
        --bs-nav-pills-link-active-color: #334155;
        --bs-nav-link-color: #334155;
        --bs-nav-link-hover-color: #1f2937;
    }

    .course-sections-tabs .nav-item {
        flex: 0 1 auto;
        min-width: 0;
        max-width: 100%;
    }

    .course-sections-tabs.nav-pills .nav-link {
        display: inline-flex;
        align-items: center;
        gap: 0.6rem;
        min-height: 52px;
        padding: 0.72rem 1rem;
        border-radius: 14px;
        border: 1px solid #e5e7eb;
        background: #ffffff !important;
        color: #334155 !important;
        font-weight: 700;
        box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
        transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease, transform 0.18s ease;
        white-space: normal !important;
        text-align: start;
        min-width: 0;
        max-width: 100%;
        -webkit-tap-highlight-color: transparent;
    }

    .course-sections-tabs.nav-pills .nav-link:hover:not(.course-sections-tabs__pill--expanded) {
        background: #f8fafc !important;
        border-color: #d8dee8;
        color: #1f2937 !important;
        box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
        transform: translateY(-1px);
    }

    .course-sections-tabs.nav-pills .nav-link.course-sections-tabs__pill--expanded:hover {
        transform: translateY(-1px);
    }

    .course-sections-tabs__index {
        width: 1.8rem;
        height: 1.8rem;
        min-width: 1.8rem;
        border-radius: 999px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 0.78rem;
        font-weight: 800;
        background: #f1f5f9;
        color: #7c2d12;
        border: 1px solid #e2e8f0;
        flex-shrink: 0;
    }

    .course-sections-tabs__title {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.25;
        white-space: normal !important;
        word-break: break-word;
        max-width: 220px;
    }

    /* Expanded section chip. */
    .course-sections-tabs.nav-pills .nav-link.course-sections-tabs__pill--expanded {
        background: linear-gradient(135deg, #fff8e8 0%, #fdf2d2 100%) !important;
        border-color: #ead8a1;
        color: #5b4a1b !important;
        box-shadow: 0 4px 14px rgba(212, 177, 73, 0.16);
    }

    .course-sections-tabs.nav-pills .nav-link.course-sections-tabs__pill--expanded .course-sections-tabs__index {
        background: #fffdf7;
        border-color: #ead8a1;
        color: #8a5a00;
    }

    /* Active tabs that are not expanded stay neutral. */
    .course-sections-tabs.nav-pills .nav-link.active:not(.course-sections-tabs__pill--expanded),
    .course-sections-tabs.nav-pills .nav-item.show > .nav-link:not(.course-sections-tabs__pill--expanded),
    .course-sections-tabs.nav-pills .show > .nav-link:not(.course-sections-tabs__pill--expanded) {
        background: #ffffff !important;
        border-color: #d9e0ea;
        color: #334155 !important;
    }

    .course-sections-tabs.nav-pills .nav-link:focus:not(:focus-visible) {
        outline: none;
        box-shadow: none;
    }

    .course-sections-tabs .nav-link:focus-visible {
        outline: 2px solid rgba(182, 0, 0, 0.22);
        outline-offset: 2px;
    }

    @media (max-width: 991.98px) {
        .course-sections-tabs {
            gap: 0.45rem;
            padding: 0.6rem;
        }

        .course-sections-tabs.nav-pills .nav-link {
            min-height: 48px;
            padding: 0.65rem 0.85rem;
            border-radius: 13px;
        }

        .course-sections-tabs__title {
            max-width: 180px;
            font-size: 0.92rem;
        }
    }

    @media (max-width: 767.98px) {
        .course-sections-tabs .nav-item {
            flex: 1 1 calc(50% - 0.55rem);
        }

        .course-sections-tabs.nav-pills .nav-link {
            width: 100%;
            min-height: 50px;
            align-items: flex-start;
            padding: 0.7rem 0.8rem;
        }

        .course-sections-tabs__title {
            max-width: none;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 420px) {
        .course-sections-tabs .nav-item {
            flex: 1 1 100%;
        }

        .course-sections-tabs.nav-pills .nav-link {
            min-height: 46px;
            padding: 0.65rem 0.75rem;
        }

        .course-sections-tabs__index {
            width: 1.65rem;
            height: 1.65rem;
            min-width: 1.65rem;
            font-size: 0.74rem;
        }

        .course-sections-tabs__title {
            font-size: 0.88rem;
        }
    }

    /* Watch page sidebar tabs stay compact in one scrollable row. */
    .course-view-inner-right .course-sections-tabs-wrap {
        margin-bottom: 0.55rem;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior-x: contain;
        scrollbar-width: thin;
        scrollbar-color: rgba(182, 0, 0, 0.35) rgba(182, 0, 0, 0.06);
    }

    .course-view-inner-right .course-sections-tabs-wrap::-webkit-scrollbar {
        height: 5px;
    }

    .course-view-inner-right .course-sections-tabs-wrap::-webkit-scrollbar-track {
        background: rgba(182, 0, 0, 0.06);
        border-radius: 999px;
    }

    .course-view-inner-right .course-sections-tabs-wrap::-webkit-scrollbar-thumb {
        background: rgba(182, 0, 0, 0.35);
        border-radius: 999px;
    }

    .course-view-inner-right .course-sections-tabs {
        flex-wrap: nowrap !important;
        width: max-content;
        min-width: max-content !important;
        gap: 0.4rem;
        padding: 0.45rem;
        border-radius: 14px;
        background: #f8fafc;
        border: 1px solid #e9eef5;
        box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
    }

    .course-view-inner-right .course-sections-tabs .nav-item {
        flex: 0 0 auto !important;
        min-width: 0;
    }

    .course-view-inner-right .course-sections-tabs.nav-pills .nav-link {
        min-height: 38px;
        height: 38px;
        padding: 0.42rem 0.65rem;
        gap: 0.38rem;
        border-radius: 12px;
        font-size: 0.78rem;
        line-height: 1;
        white-space: nowrap !important;
        align-items: center;
    }

    .course-view-inner-right .course-sections-tabs__index {
        width: 1.45rem;
        height: 1.45rem;
        min-width: 1.45rem;
        font-size: 0.68rem;
    }

    .course-view-inner-right .course-sections-tabs__title {
        display: block;
        max-width: 125px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap !important;
        line-height: 1.1;
        font-size: 0.78rem;
    }

    .course-view-inner-right .course-sections-tabs.nav-pills .nav-link.course-sections-tabs__pill--expanded {
        background: linear-gradient(135deg, #fff8e8 0%, #fdf2d2 100%) !important;
        border-color: #ead8a1;
        color: #5b4a1b !important;
        box-shadow: 0 2px 8px rgba(212, 177, 73, 0.13);
    }

    @media (max-width: 767.98px) {
        .course-view-inner-right .course-sections-tabs .nav-item {
            flex: 0 0 auto !important;
        }

        .course-view-inner-right .course-sections-tabs.nav-pills .nav-link {
            width: auto !important;
            min-height: 36px;
            height: 36px;
            padding: 0.38rem 0.6rem;
        }

        .course-view-inner-right .course-sections-tabs__title {
            max-width: 115px;
            font-size: 0.76rem;
        }
    }
    .course-sections-tab-content {
        min-height: 180px;
    }
    .course-sections-tab-content.show-all-sections .section-tab-pane {
        display: block !important;
        opacity: 1 !important;
    }
    .course-sections-tab-content.show-all-sections .section-tab-pane + .section-tab-pane {
        margin-top: 0.75rem;
    }
    .course-sections-tab-content.show-all-sections #section-tab-all {
        display: none !important;
    }
    .course-sections-tab-content .course-lesson.is-collapsed > .course-lesson-body {
        display: none;
    }
    /* Offset fixed/sticky site header when jumping to a section from the level tabs */
    .course-content .course-lesson.has-lesson[id^="course-section-"] {
        scroll-margin-top: 5.5rem;
    }
    .course-lesson > .course-lesson-header {
        display: flex;
        align-items: center;
        gap: 0.7rem;
        cursor: pointer;
        position: relative;
        padding-inline-end: 2rem !important; /* reserve room for dropdown chevron */
    }
    .course-lesson.has-lesson > .course-lesson-header::after {
        content: "\f107"; /* Line Awesome chevron-down */
        font-family: "Line Awesome Free";
        font-weight: 900;
        position: absolute;
        inset-inline-end: 0.65rem;
        top: 50%;
        transform: translateY(-50%) rotate(0deg);
        font-size: 0.95rem;
        color: rgba(0, 0, 0, 0.6);
        transition: transform .2s ease, color .2s ease;
        pointer-events: none;
    }
    .course-sections-tab-content .course-lesson.has-lesson.is-collapsed > .course-lesson-header::after {
        transform: translateY(-50%) rotate(-90deg);
        color: rgba(0, 0, 0, 0.45);
    }
    .course-lesson > .course-lesson-header .course-lesson-number {
        flex-shrink: 0;
    }
    .course-lesson > .course-lesson-header .course-lesson-info {
        flex: 1 1 auto;
        min-width: 0;
    }
    .course-lesson > .course-lesson-header .section-complete-status {
        margin-inline-start: auto;
        /* Chevron is ::after with pointer-events:none; clicks pass through — keep a clear strip so the header receives toggles */
        margin-inline-end: 1.2rem;
        flex-shrink: 0;
    }
    @media (max-width: 767.98px) {
        .course-lesson > .course-lesson-header {
            flex-wrap: nowrap;
        }
        .course-lesson > .course-lesson-header .section-complete-status {
            width: auto;
            min-width: 0;
            margin-inline-start: auto;
        }
    }

    /* مستطيل أبيض، قياس واحد لجميع الأقسام (بحجم يكفي ٣ أرقام للأبناء) */
    .section-complete-status {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.35rem;
        width: 12rem;
        min-width: 12rem;
        border: 1px solid var(--sec-red-border, #E8C25C);
        background: #fff !important;
        color: #6b7280;
        border-radius: 6px;
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
        font-weight: 700;
        line-height: 1;
        transition: all .18s ease;
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    }
    /* Sidebar layout (watch page): compact balanced header with low height */
    .course-view-inner-right .course-lesson > .course-lesson-header {
        display: flex;
        align-items: center;
        gap: 0.45rem;
        padding: 0.45rem 0.55rem !important;
        position: relative;
        padding-inline-end: 1.55rem !important; /* reserve space for toggle arrow */
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-number {
        flex: 0 0 auto;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-info {
        flex: 1 1 auto;
        min-width: 0;
        margin: 0;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .section-complete-status {
        flex: 0 0 auto;
        align-self: center;
        margin: 0;
        margin-inline-end: 1.15rem;
        width: auto;
        min-width: 6.9rem;
        max-width: 7.7rem;
        padding: 0.24rem 0.45rem;
        font-size: 0.72rem;
        white-space: normal;
        overflow: hidden;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-title {
        margin-bottom: 0.12rem;
        line-height: 1.15;
        font-size: 0.86rem !important;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-meta-container {
        display: flex;
        flex-wrap: nowrap;
        gap: 0.2rem 0.45rem;
        align-items: center;
        min-width: 0;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-meta {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        min-width: 0;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-meta-item {
        min-width: 0;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-meta-item .text {
        line-height: 1.05;
        font-size: 0.72rem;
        white-space: nowrap;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-meta-item .icon i {
        font-size: 0.72rem;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-number {
        width: 46px !important;
        height: 42px !important;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-number p {
        font-size: 0.64rem;
        line-height: 1.05;
        margin: 0;
    }
    .course-view-inner-right .course-lesson > .course-lesson-header .course-lesson-number span {
        font-size: 1rem;
    }
    /* Keep currently opened section pinned while scrolling down */
    .course-view-inner-right .section-tab-pane .course-lesson:not(.is-collapsed) > .course-lesson-header {
        position: sticky;
        top: var(--course-sections-sticky-offset, 0px);
        z-index: 6;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
    }
    .course-view-inner-right .section-complete-status__text {
        gap: 0.1rem;
        line-height: 1.1;
        width: 100%;
        align-items: flex-start;
        white-space: normal;
        overflow: hidden;
    }
    .course-view-inner-right .section-complete-status__line {
        gap: 0.18rem;
        width: 100%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .course-view-inner-right .section-complete-status__line-icon {
        font-size: 0.72rem;
    }
    .course-view-inner-right .course-lesson.has-lesson > .course-lesson-header::after {
        position: absolute;
        inset-inline-end: 0.5rem; /* opposite edge: left in RTL, right in LTR */
        top: 50%;
        transform: translateY(-50%);
        margin: 0 !important;
        width: 1rem;
        height: 1rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        pointer-events: none;
    }
    /* مكتمل: أخضر مع نفس الشكل المستطيل */
    .section-complete-status.is-complete {
        background: #dcfce7 !important;
        border-color: #22c55e;
        color: #15803d;
        box-shadow: 0 1px 2px rgba(34, 197, 94, 0.12);
    }
    .section-complete-status:not(.is-complete):hover {
        background: #fafafa !important;
        color: #4b5563;
    }
    .section-complete-status:active,
    .section-complete-status:focus {
        color: inherit;
    }
    .section-complete-status:active .section-complete-status__text,
    .section-complete-status:focus .section-complete-status__text {
        visibility: visible;
        opacity: 1;
    }
    .section-complete-status__text {
        display: inline-flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 0.4rem;
        line-height: 1.3;
        white-space: nowrap;
        width: 100%;
        min-width: 0;
    }
    .section-complete-status__line {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }
    .section-complete-status__line-icon {
        font-size: 0.9rem;
        color: #9ca3af;
        flex-shrink: 0;
    }
    .section-complete-status__line--complete .section-complete-status__line-icon {
        color: #22c55e;
    }
    .section-complete-status.is-complete .section-complete-status__line-icon {
        color: #22c55e;
    }

    /* صف الدرس: الرابط + زر التحميل في سطر واحد (مثل الهيدر) */
    .course-lesson-content-row {
        display: flex;
        align-items: stretch;
        width: 100%;
    }
    .course-lesson-content-row > .course-lesson-content-link {
        flex: 1;
        min-width: 0;
    }
    /* تمارين/أبناء: إزاحة البداية فقط — النهاية بمحاذاة نهاية صف الدرس */
    .course-content .course-lesson-content-item.sub-lesson .course-lesson-content-link {
        width: calc(100% - 32px);
        margin-inline-start: 32px;
        margin-inline-end: 0;
    }
    .parent-exercise-summary-item,
    .parent-exercise-panel {
        list-style: none;
        padding: 0;
    }
    .parent-exercise-list > .parent-exercise-summary-item,
    .course-lesson-list:not(.parent-exercise-list) > .course-lesson-content-item:not(.sub-lesson) {
        margin: 1rem 0 0;
    }
    .parent-exercise-list > .parent-exercise-summary-item:first-child {
        margin-top: 0.35rem;
    }
    .course-lesson-list:not(.parent-exercise-list) > .course-lesson-content-item:not(.sub-lesson):first-child {
        margin-top: 0.35rem;
    }
    .parent-exercise-list > .parent-exercise-panel {
        margin: 0.4rem 0 1.25rem;
    }
    .parent-exercise-summary-item + .parent-exercise-panel.is-open {
        margin-top: 0.42rem;
    }
    .parent-exercise-panel.is-open + .parent-exercise-summary-item {
        margin-top: 0;
    }
    .parent-exercise-summary-toggle {
        width: 100%;
        border: 1px solid rgba(232, 194, 92, 0.7);
        border-radius: 12px;
        background: #fef3c7;
        color: #5b4a1b;
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: center;
        gap: 0.52rem;
        padding: 0.56rem 0.65rem;
        box-shadow: 0 8px 18px rgba(182, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
        text-align: start;
        transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
    }
    .parent-exercise-summary-toggle:hover {
        border-color: rgba(182, 0, 0, 0.28);
        box-shadow: 0 10px 24px rgba(182, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
        transform: translateY(-1px);
    }
    .parent-exercise-summary-toggle__main {
        display: inline-flex;
        align-items: center;
        gap: 0.58rem;
        min-width: 0;
    }
    .parent-exercise-summary-toggle__icon {
        width: 2rem;
        height: 2rem;
        border-radius: 999px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: #fff;
        color: #b60000;
        box-shadow: 0 2px 8px rgba(182, 0, 0, 0.12);
        flex: 0 0 auto;
    }
    .parent-exercise-summary-toggle__lesson-number {
        font-size: 0.88rem;
        font-weight: 900;
        line-height: 1;
        color: inherit;
    }
    .parent-exercise-summary-toggle__text {
        display: flex;
        flex-direction: column;
        gap: 0.12rem;
        min-width: 0;
    }
    .parent-exercise-summary-toggle__text strong {
        color: #7f1d1d;
        font-size: 0.9rem;
        line-height: 1.15;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .parent-exercise-summary-toggle__progress {
        grid-column: 1 / -1;
        width: 100%;
        min-width: 0;
        height: 0.45rem;
        border-radius: 999px;
        background: rgba(182, 0, 0, 0.1);
        overflow: hidden;
    }
    .parent-exercise-summary-toggle__progress span {
        display: block;
        height: 100%;
        border-radius: inherit;
        background: linear-gradient(90deg, #22c55e 0%, #e8b84d 100%);
    }
    .parent-exercise-summary-toggle__meta {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        color: #7c2d12;
        font-weight: 800;
        flex-shrink: 0;
    }
    .parent-exercise-summary-toggle__meta-label {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 1.65rem;
        padding: 0.14rem 0.55rem;
        border-radius: 999px;
        background: #fff;
        border: 1px solid rgba(182, 0, 0, 0.12);
        font-size: 0.72rem;
        line-height: 1.15;
        white-space: nowrap;
    }
    .parent-exercise-summary-toggle__meta i {
        font-size: 1rem;
        transition: transform 0.18s ease;
    }
    .parent-exercise-summary-item.is-open .parent-exercise-summary-toggle__meta i {
        transform: rotate(180deg);
    }
    .parent-exercise-panel {
        padding-inline-start: 0.85rem;
        border-inline-start: 2px solid rgba(100, 116, 139, 0.42);
        transition: opacity 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
    }
    .parent-exercise-panel.is-collapsed {
        display: none;
    }
    .parent-exercise-panel.is-open {
        display: block;
        background: #d8dde5;
        border-color: rgba(71, 85, 105, 0.28);
        border-radius: 12px;
        box-shadow: inset 0 0 0 1px rgba(71, 85, 105, 0.14);
        padding-block: 0.42rem;
        padding-inline: 0.8rem 0.5rem;
    }
    .parent-exercise-panel > .course-lesson-list:first-child {
        margin-top: 0.15rem;
    }
    .parent-exercise-panel.is-open > .course-lesson-list:last-child {
        margin-bottom: 0.15rem;
    }
    .course-view-inner-right .parent-exercise-summary-toggle__icon {
        width: 1.65rem;
        height: 1.65rem;
    }
    .course-view-inner-right .parent-exercise-summary-toggle__lesson-number {
        font-size: 0.78rem;
    }
    .course-view-inner-right .parent-exercise-summary-toggle__text strong {
        font-size: 0.78rem;
    }
    .course-view-inner-right .parent-exercise-summary-toggle__meta-label {
        font-size: 0.64rem;
        padding-inline: 0.42rem;
    }
    .course-view-inner-right .parent-exercise-list > .parent-exercise-summary-item {
        margin-top: 1rem;
    }
    .course-view-inner-right .course-lesson-list:not(.parent-exercise-list) > .course-lesson-content-item:not(.sub-lesson) {
        margin-top: 1rem;
    }
    .course-view-inner-right .parent-exercise-list > .parent-exercise-panel {
        margin-bottom: 1.1rem;
    }
    .course-view-inner-right .parent-exercise-panel {
        padding-inline-start: 0.45rem;
    }
    .course-view-inner-right .parent-exercise-panel.is-open {
        padding-inline: 0.55rem 0.35rem;
    }
    @media (max-width: 575.98px) {
        .parent-exercise-summary-toggle {
            gap: 0.5rem;
        }
        .parent-exercise-summary-toggle__meta {
            grid-column: 1 / -1;
            justify-content: space-between;
            width: 100%;
        }
        .parent-exercise-summary-toggle__meta-label {
            white-space: normal;
            text-align: start;
        }
        .parent-exercise-panel.is-open {
            border-radius: 10px;
            padding-block: 0.35rem;
            padding-inline: 0.5rem 0.3rem;
        }
    }
    .course-lesson-favorite-icon {
        color: #b60000;
        font-size: 0.95rem;
        flex-shrink: 0;
    }
    .course-content .completed-icon {
        margin-inline-end: 0.35rem;
        flex-shrink: 0;
        font-size: 1rem;
        line-height: 1;
    }
    .course-content .completed-icon.is-complete {
        color: #16a34a;
    }
    .course-content .completed-icon.is-incomplete {
        color: #d1d5db;
    }

    /* ستايل عام لكل كرت درس */
    .course-lesson-content-link{
      box-shadow: none;
      border: 1px solid #fecaca !important;
      transition: filter 0.3s ease, border-color 0.3s ease;
    }

    .course-content .course-lesson-content-link--standalone-parent {
        border-radius: 12px;
        padding: 0.56rem 0.65rem;
        min-height: 3.25rem;
        box-shadow: 0 8px 18px rgba(182, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8) !important;
    }

    .course-content .course-lesson-content-link--standalone-parent:hover {
        filter: brightness(0.98);
        box-shadow: 0 10px 24px rgba(182, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9) !important;
    }

    .course-content .lesson-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.28rem;
        background: transparent !important;
        border: 0 !important;
        padding: 0 !important;
    }

    .course-content .lesson-badge__icon {
        display: inline-flex;
        align-items: center;
        line-height: 1;
    }

    .course-content .lesson-badge__label {
        display: inline-flex;
        align-items: center;
        min-height: 1.22rem;
        padding: 0.12rem 0.42rem;
        border-radius: 999px;
        background: var(--lesson-badge-bg-color, rgba(248, 250, 252, 0.92)) !important;
        border: 1px solid var(--lesson-badge-border-color, rgba(148, 163, 184, 0.32)) !important;
        color: #1f2937 !important;
        font-weight: 800;
        line-height: 1.05;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.58), 0 1px 3px rgba(15, 23, 42, 0.08);
    }

    /* ✅ ظل أحمر ثابت (يبقى بعد انتهاء الوميض) */
    .course-lesson-content-item.current-lesson .course-lesson-content-link,
    .course-lesson-content-link.pulse-hold{
      border: 2px solid #b60000 !important; /* إطار أحمر ثابت */
      --hold-shadow: 0 0 0 2px rgba(182,0,0,0.35), 0 0 10px 2px rgba(182,0,0,0.25);
      box-shadow: var(--hold-shadow) !important;   /* ✅ يبقى ثابت */
    }

    /* ✅ كلاس الوميض (3 ومضات) */
    .course-lesson-content-link.pulse-flash{
      animation: courseContentPulseFlash 1s ease-in-out 3; /* 3 ومضات */
    }

    /* ✅ الوميض يرجع في 100% للظل الثابت بدل 0 */
    @keyframes courseContentPulseFlash{
      0%, 100% { box-shadow: var(--hold-shadow); }
      50%      { box-shadow: 0 0 0 2px rgba(182,0,0,0.45), 0 0 16px 6px rgba(182,0,0,0.75); }
    }



    /* border-color للدروس الأبناء يأخذ نفس background-color لكن أغمق درجة */
    .course-lesson-content-item.sub-lesson[style*="--category-bg-color"] .course-lesson-content-link {
        /* استخدام box-shadow كـ border أغمق - إضافة layer أسود شفاف فوق border */
        border: 1px solid var(--category-bg-color) !important;
    }

    /* Hover للدروس الأبناء (sub-lesson) - background أفتح درجة */
    .course-lesson-content-item.sub-lesson .course-lesson-content-link[style*="background-color"]:hover {
        filter: brightness(0.95) !important;
    }

      /* ✅ ألوان قابلة للتعديل بسهولة – برتقالي/كهرماني أفتح */
      :root{
        --sec-red-light: #F5D68A; /* أصفر/برتقالي فاتح */
        --sec-red-dark:  #E8B84D; /* كهرماني فاتح */
        --sec-red-border:#E8C25C; /* حد فاتح */
        --sec-text:      rgba(0,0,0,.75); /* نص غامق */
        --sec-text-muted:rgba(0,0,0,.55); /* نص أهدأ */
      }

      /* ✅ مربع رقم القسم */
      .bg--section-red{
        background: linear-gradient(135deg, var(--sec-red-dark) 0%, var(--sec-red-light) 100%) !important;
      }

      /* ✅ ترويسة القسم كاملة (التدرج ألطف من لون واحد قوي) */
      .course-lesson > .course-lesson-header{
        background: linear-gradient(135deg, var(--sec-red-light) 0%, var(--sec-red-dark) 100%) !important;
        border: 1px solid var(--sec-red-border) !important;
      }

      /* ✅ ألوان النصوص والأيقونات داخل الترويسة */
      .course-lesson > .course-lesson-header .course-lesson-title{
        color: var(--sec-text) !important;
      }
      .course-lesson > .course-lesson-header .course-lesson-meta-item .text{
        color: var(--sec-text-muted) !important;
      }
      .course-lesson > .course-lesson-header .course-lesson-meta-item .icon i{
        color: var(--sec-text) !important;
      }

      /* ✅ لمسة Hover لطيفة */
      .course-lesson > .course-lesson-header:hover{
        filter: brightness(1.03);
      }

        /* ✅ إطار أحمر لمنطقة المنسدلة (Body) بدل الرمادي */
        .course-lesson > .course-lesson-body,
        .course-lesson > .collapse > .course-lesson-body{
          border: 1px solid var(--sec-red-border) !important; /* إطار أحمر ناعم */
          border-top: 0 !important;                           /* حتى ما يصير إطارين مع الترويسة */
          border-radius: 0 0 12px 12px;                       /* (اختياري) تدوير تحت */
          background: #fff;                                   /* (اختياري) تثبيت الخلفية */
        }

        /* ✅ فاصل نهاية المستوى + خط سفلي عريض */
        .level-end{
          margin-top: 14px;
          padding: 14px 10px 10px;
          text-align: center;
          border-bottom: 6px solid var(--sec-red-border) !important; /* خط سفلي عريض */
        }

        /* ✅ تنسيق النص */
        .level-end__text{
          display: inline-block;
          font-weight: 800;
          color: var(--sec-red-dark);
          background: rgba(182,0,0,0.06); /* خلفية خفيفة للنص (اختياري) */
          padding: 6px 12px;
          border-radius: 999px;
        }