/* ═══════════════════════════════════════════════════════════════════
   📐 Ethraa Design Tokens — المصدر الموحد لنظام التصميم
   الإصدار: 2.0 | تاريخ: أبريل 2026
   ═══════════════════════════════════════════════════════════════════ */

/* ─── الألوان الأساسية ─── */
:root {
    /* العلامة التجارية - المظهر الفاخر الحديث (الفيروزي والذهبي الممتاز) */
    --eth-primary: #0D9488;
    --eth-primary-hover: #0F766E;
    --eth-primary-light: #CCFBF1;
    --eth-primary-rgb: 13, 148, 136;

    --eth-accent: #F59E0B;
    --eth-accent-hover: #D97706;
    --eth-accent-light: #FEF9C3;

    /* الأسطح والخلفيات */
    --eth-bg: #F8FAFC;
    --eth-bg-alt: #F1F5F9;
    --eth-surface: #FFFFFF;

    /* النصوص */
    --eth-text: #0F172A;
    --eth-text-secondary: #475569;
    --eth-text-muted: #94A3B8;

    /* الحدود */
    --eth-border: #E2E8F0;
    --eth-border-strong: #CBD5E1;

    /* الظلال — موحدة */
    --eth-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --eth-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    --eth-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
    --eth-shadow-hover: 0 8px 24px rgba(15, 118, 110, 0.12);

    /* ─── أنصاف الأقطار الموحدة (UI-7) ─── */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 999px;

    /* ─── الخط الموحد (UI-1) ─── */
    --eth-font: 'Cairo', sans-serif;

    /* ─── الفراغات ─── */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* ─── الانتقالات ─── */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* ألوان البطاقات الإحصائية — 3 ألوان فقط بدل 7 */
    --card-primary-bg: linear-gradient(135deg, #0F766E 0%, #115E59 100%);
    --card-secondary-bg: linear-gradient(135deg, #1D4ED8 0%, #1E40AF 100%);
    --card-warning-bg: linear-gradient(135deg, #D97706 0%, #B45309 100%);
    --card-danger-bg: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
}

/* ═══════════════════════════════════════════════════════════════════
   🌙 الوضع الداكن — إعادة بناء صحيحة (UI-6)
   ═══════════════════════════════════════════════════════════════════ */
[data-bs-theme="dark"] {
    --eth-primary: #2DD4BF;
    --eth-primary-hover: #5EEAD4;
    --eth-primary-light: rgba(45, 212, 191, 0.12);
    --eth-primary-rgb: 45, 212, 191;

    --eth-accent: #FBBF24;
    --eth-accent-hover: #FCD34D;
    --eth-accent-light: rgba(251, 191, 36, 0.12);

    --eth-bg: #0F172A;
    --eth-bg-alt: #1E293B;
    --eth-surface: #1E293B;

    --eth-text: #F1F5F9;
    --eth-text-secondary: #CBD5E1;
    --eth-text-muted: #94A3B8;

    --eth-border: #334155;
    --eth-border-strong: #475569;

    --eth-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --eth-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    --eth-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.3);
    --eth-shadow-hover: 0 8px 24px rgba(45, 212, 191, 0.15);
}

/* ─── إعادة تعيين الألوان المتأثرة بالوضع الداكن (UI-6) ─── */
[data-bs-theme="dark"] .bg-white {
    background-color: var(--eth-surface) !important;
}

[data-bs-theme="dark"] .text-dark {
    color: var(--eth-text) !important;
}

[data-bs-theme="dark"] .text-muted {
    color: var(--eth-text-muted) !important;
}

[data-bs-theme="dark"] .border-bottom {
    border-color: var(--eth-border) !important;
}

[data-bs-theme="dark"] .card {
    background-color: var(--eth-surface);
    border-color: var(--eth-border);
    color: var(--eth-text);
}

[data-bs-theme="dark"] .card h5,
[data-bs-theme="dark"] .card h6,
[data-bs-theme="dark"] .card p,
[data-bs-theme="dark"] .card span {
    color: inherit;
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: var(--eth-bg);
    color: var(--eth-text);
    border-color: var(--eth-border-strong);
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
    background-color: var(--eth-bg-alt);
    color: var(--eth-text);
    border-color: var(--eth-primary);
}

[data-bs-theme="dark"] .table-light th {
    background-color: var(--eth-bg-alt);
    color: var(--eth-text);
    border-color: var(--eth-border);
}

[data-bs-theme="dark"] .bg-light {
    background-color: var(--eth-bg-alt) !important;
}

[data-bs-theme="dark"] .modal-content {
    background-color: var(--eth-surface);
    border-color: var(--eth-border);
    color: var(--eth-text);
}

[data-bs-theme="dark"] .offcanvas,
[data-bs-theme="dark"] .offcanvas-lg {
    background-color: var(--eth-bg);
}

[data-bs-theme="dark"] .offcanvas-header {
    border-bottom-color: var(--eth-border);
    background-color: var(--eth-surface);
}

/* ─── أزرار التنقل الجانبي (dark) ─── */
[data-bs-theme="dark"] .nav-pills .nav-link {
    color: var(--eth-text-secondary);
}

[data-bs-theme="dark"] .nav-pills .nav-link:hover {
    background-color: rgba(45, 212, 191, 0.1);
    color: var(--eth-primary);
}

/* ─── المحادثات (dark) ─── */
[data-bs-theme="dark"] .msg-student {
    background-color: var(--eth-bg);
    border-color: var(--eth-border);
}

/* ─── بطاقات التقييم والمكافآت ─── */
[data-bs-theme="dark"] .rating-card,
[data-bs-theme="dark"] .rating-section,
[data-bs-theme="dark"] .eval-card,
[data-bs-theme="dark"] .reward-card {
    background-color: var(--eth-surface);
    border-color: var(--eth-border);
    color: var(--eth-text);
}

[data-bs-theme="dark"] .reward-card.locked {
    background: var(--eth-bg-alt);
}

/* ─── FullCalendar (dark) ─── */
[data-bs-theme="dark"] .fc {
    background-color: var(--eth-surface);
    border-color: var(--eth-border);
}

/* ═══════════════════════════════════════════════════════════════════
   📱 التجاوب — قواعد أساسية
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 991.98px) {
    :root {
        --radius-xl: 20px;
    }
}

@media (max-width: 575.98px) {
    :root {
        --radius-lg: 16px;
        --radius-xl: 16px;
    }
}

/* ═══════════════════════════════════════════════════════════════════
   🔄 مؤشر التحميل العام (UX-7)
   ═══════════════════════════════════════════════════════════════════ */
.eth-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.eth-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 28px;
    height: 28px;
    margin: -14px 0 0 -14px;
    border: 3px solid var(--eth-border);
    border-top-color: var(--eth-primary);
    border-radius: 50%;
    animation: eth-spin 0.7s linear infinite;
    z-index: 10;
}

@keyframes eth-spin {
    to { transform: rotate(360deg); }
}

.eth-btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.eth-btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: eth-spin 0.6s linear infinite;
}

/* ═══════════════════════════════════════════════════════════════════
   🏷️ تجميعات القائمة الجانبية (UX-6)
   ═══════════════════════════════════════════════════════════════════ */
.sidebar-group-label {
    display: block;
    padding: 10px 12px 6px;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--eth-text-muted);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-top: 1px solid var(--eth-border);
    margin-top: 8px;
}

.sidebar-group-label:first-child {
    border-top: none;
    margin-top: 0;
}

[data-bs-theme="dark"] .sidebar-group-label {
    color: var(--eth-text-muted);
    border-top-color: var(--eth-border);
}

/* =========================================================================
   Premium Global Core Enhancements (Arabic, Scrollbars, Glassmorphism, Forms)
   ========================================================================= */

/* Arabic Typography Enhancements */
* {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.4;
    letter-spacing: -0.02em;
}
p, span, td, th, label, input, select, textarea {
    line-height: 1.75;
}

/* Elegant Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(var(--eth-primary-rgb), 0.2);
    border-radius: var(--radius-full);
    transition: background var(--transition-normal);
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--eth-primary-rgb), 0.4);
}

/* Glassmorphism & Visual Depth */
.glass-panel {
    background: rgba(255, 255, 255, 0.7) !important;
    backdrop-filter: blur(12px) saturate(160%);
    -webkit-backdrop-filter: blur(12px) saturate(160%);
    border: 1px solid rgba(255, 255, 255, 0.4) !important;
}
[data-bs-theme="dark"] .glass-panel {
    background: rgba(30, 41, 59, 0.7) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

/* Glassmorphic Modals */
.modal-content {
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.5) !important;
    border-radius: var(--radius-lg);
    box-shadow: var(--eth-shadow-lg) !important;
    transition: transform var(--transition-normal) cubic-bezier(0.34, 1.56, 0.64, 1);
}
[data-bs-theme="dark"] .modal-content {
    background: rgba(30, 41, 59, 0.85) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

/* Mobile Bottom-sheet Drawers */
@media (max-width: 767.98px) {
    .modal.fade .modal-dialog {
        transform: translateY(100%);
        transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        margin: 0;
        max-width: 100%;
        width: 100%;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
    }
    .modal.show .modal-dialog {
        transform: translateY(0);
    }
    .modal-content {
        border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
        border-bottom: none !important;
        max-height: 92vh;
        overflow-y: auto;
    }
    /* Indicator handle for bottom sheets */
    .modal-content::before {
        content: '';
        display: block;
        width: 40px;
        height: 5px;
        background: var(--eth-border-strong);
        border-radius: var(--radius-full);
        margin: 12px auto 6px;
    }
}

/* Table Stack-to-Card Transposition (Mobile Table) */
@media (max-width: 767.98px) {
    .table-responsive-stack table,
    .table-responsive-stack thead,
    .table-responsive-stack tbody,
    .table-responsive-stack th,
    .table-responsive-stack td,
    .table-responsive-stack tr {
        display: block;
    }
    .table-responsive-stack thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    .table-responsive-stack tr {
        background: var(--eth-surface);
        border: 1px solid var(--eth-border);
        border-radius: var(--radius-md);
        padding: 12px;
        margin-bottom: 12px;
        box-shadow: var(--eth-shadow-sm);
        transition: transform var(--transition-fast);
    }
    .table-responsive-stack tr:hover {
        transform: translateY(-2px);
        box-shadow: var(--eth-shadow);
    }
    .table-responsive-stack td {
        border: none;
        border-bottom: 1px solid var(--eth-border);
        position: relative;
        padding-left: 50% !important;
        text-align: left !important;
        padding-top: 10px;
        padding-bottom: 10px;
    }
    .table-responsive-stack td:last-child {
        border-bottom: none;
    }
    .table-responsive-stack td::before {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        right: 12px;
        left: auto;
        width: 45%;
        padding-right: 10px;
        white-space: nowrap;
        text-align: right;
        font-weight: 800;
        color: var(--eth-text-secondary);
        content: attr(data-label);
    }
    /* Force right align for Arabic */
    [dir="rtl"] .table-responsive-stack td {
        padding-left: 12px !important;
        padding-right: 50% !important;
        text-align: right !important;
    }
    [dir="rtl"] .table-responsive-stack td::before {
        left: 12px;
        right: auto;
        text-align: left;
    }
}

/* Premium Form Controls */
.form-control, .form-select {
    border-radius: var(--radius-md) !important;
    border: 2px solid var(--eth-border);
    padding: 10px 16px;
    transition: all var(--transition-fast) !important;
}
.form-control:focus, .form-select:focus {
    border-color: var(--eth-primary) !important;
    box-shadow: 0 0 0 4px var(--eth-primary-light) !important;
}

/* Interactive Checkboxes & Radios */
.form-check-input {
    border: 2px solid var(--eth-border-strong);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
}
.form-check-input:checked {
    background-color: var(--eth-primary) !important;
    border-color: var(--eth-primary) !important;
    transform: scale(1.15);
}

/* Hover elevation classes */
.card-hover-elevate {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.card-hover-elevate:hover {
    transform: translateY(-6px);
    box-shadow: var(--eth-shadow-hover) !important;
}

/* Mobile Bottom Navigation Dock (Native-feeling Navigation Hub) */
.mobile-nav-dock {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: #FFFCF6;
    border-top: 1px solid var(--eth-border);
    z-index: 1030;
    display: none;
    justify-content: space-around;
    align-items: center;
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -4px 14px rgba(23, 61, 54, 0.08);
}
[data-bs-theme="dark"] .mobile-nav-dock {
    background: var(--eth-surface);
    border-top-color: var(--eth-border);
}
.mobile-nav-dock-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--eth-text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 700;
    flex: 1 1 0;
    min-width: 0;
    padding: 4px;
    transition: color var(--transition-fast);
}
.mobile-nav-dock-item:focus-visible {
    outline: 3px solid var(--eth-accent);
    outline-offset: -3px;
}
.mobile-nav-dock-item i {
    font-size: 1.35rem;
    margin-bottom: 2px;
}
.mobile-nav-dock-item.active {
    color: var(--eth-primary);
}
@media (max-width: 767.98px) {
    .mobile-nav-dock {
        display: flex;
    }
}