/* ==============================================================================
   منصة التعليم وإدارة الملفات الأكاديمية - Academic Platform Pro
   التنسيق الشامل المتكامل الداعم بنسبة مئة بالمئة للمظهرين الداكن والفاتح
   تم إزالة النقاط والفوارز وعلامات الاقتباس بدقة في كافة النصوص
   ============================================================================== */

:root {
    --bg-main: #060913;
    --bg-surface: rgba(14, 21, 37, 0.85);
    --bg-surface-elevated: #0d1527;
    --bg-surface-sub: rgba(0, 0, 0, 0.35);
    --border-color: rgba(0, 240, 255, 0.18);
    --border-hover: rgba(0, 240, 255, 0.55);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-cyan: #00f0ff;
    --accent-blue: #2563eb;
    --accent-blue-hover: #1d4ed8;
    --accent-glow: rgba(0, 240, 255, 0.25);
    --accent-green: #10b981;
    --accent-crimson: #ef4444;
    --accent-amber: #f59e0b;
    --accent-sub-bg: rgba(0, 240, 255, 0.08);
    --accent-sub-border: rgba(0, 240, 255, 0.25);
    --divider-color: rgba(255, 255, 255, 0.08);
    --input-bg: rgba(8, 14, 27, 0.9);
    --input-border: rgba(0, 240, 255, 0.22);
    --input-text: #f8fafc;
    --table-header-bg: rgba(0, 0, 0, 0.45);
    --table-row-hover: rgba(0, 240, 255, 0.04);
    --pill-bg: rgba(0, 0, 0, 0.45);
    --btn-secondary-bg: rgba(255, 255, 255, 0.08);
    --btn-secondary-hover: rgba(255, 255, 255, 0.16);
    --btn-secondary-text: #f8fafc;
    --btn-primary-text: #060913;
    --overlay-bg: rgba(6, 9, 19, 0.95);
    --modal-bg: #0b1120;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --badge-bg: rgba(0, 240, 255, 0.12);
    --grade-box-bg: rgba(16, 185, 129, 0.08);
    --grade-box-border: rgba(16, 185, 129, 0.28);
    --card-radius: 16px;
    --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.2);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body.theme-light {
    --bg-main: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-surface-sub: #f8fafc;
    --border-color: #cbd5e1;
    --border-hover: #0284c7;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-cyan: #0284c7;
    --accent-blue: #2563eb;
    --accent-blue-hover: #1d4ed8;
    --accent-glow: rgba(2, 132, 199, 0.18);
    --accent-green: #059669;
    --accent-crimson: #dc2626;
    --accent-amber: #d97706;
    --accent-sub-bg: rgba(2, 132, 199, 0.08);
    --accent-sub-border: rgba(2, 132, 199, 0.25);
    --divider-color: #e2e8f0;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-text: #0f172a;
    --table-header-bg: #f1f5f9;
    --table-row-hover: rgba(2, 132, 199, 0.05);
    --pill-bg: #e2e8f0;
    --btn-secondary-bg: #e2e8f0;
    --btn-secondary-hover: #cbd5e1;
    --btn-secondary-text: #1e293b;
    --btn-primary-text: #ffffff;
    --overlay-bg: rgba(241, 245, 249, 0.96);
    --modal-bg: #ffffff;
    --card-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    --badge-bg: rgba(2, 132, 199, 0.12);
    --grade-box-bg: rgba(16, 185, 129, 0.1);
    --grade-box-border: rgba(16, 185, 129, 0.35);
    --shadow-glow: 0 0 20px rgba(2, 132, 199, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Cairo', 'Outfit', system-ui, -apple-system, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* الخلفية الرقمية الشبكية المتوافقة مع المظهرين */
.tech-bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 10%, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
                radial-gradient(circle at 90% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -2;
    transition: var(--transition);
}

body.theme-light .tech-bg-overlay {
    background: radial-gradient(circle at 50% 10%, rgba(2, 132, 199, 0.09) 0%, transparent 60%),
                radial-gradient(circle at 90% 80%, rgba(37, 99, 235, 0.06) 0%, transparent 50%);
}

.cyber-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                      linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 55px 55px;
    opacity: 0.25;
    pointer-events: none;
    z-index: -1;
    transition: var(--transition);
}

body.theme-light .cyber-grid {
    opacity: 0.14;
    background-image: linear-gradient(rgba(37, 99, 235, 0.15) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(37, 99, 235, 0.15) 1px, transparent 1px);
}

.container {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==============================================================================
   بوابة الدخول الإلزامية عند فتح المنصة
   ============================================================================== */
.login-gate-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 16px;
    transition: opacity 0.35s ease, visibility 0.35s ease, background 0.3s ease;
}

.login-gate-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.login-gate-card {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow), var(--shadow-glow);
    border-radius: 24px;
    width: 100%;
    max-width: 480px;
    padding: 34px 30px;
    position: relative;
    animation: cardZoomIn 0.35s ease-out;
}

@keyframes cardZoomIn {
    from { transform: scale(0.92); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.gate-header {
    text-align: center;
    margin-bottom: 24px;
}

.gate-logo-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: var(--accent-sub-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 20px var(--accent-glow);
}

.gate-logo-img {
    width: 58px;
    height: 58px;
    object-fit: contain;
}

.gate-header h2 {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.gate-header p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* محدد الرتبة الأكاديمية */
.role-selector-pills {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    background: var(--pill-bg);
    padding: 6px;
    border-radius: 14px;
    margin-bottom: 22px;
    border: 1px solid var(--border-color);
}

.role-pill {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 10px 6px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.role-pill i {
    font-size: 1.15rem;
}

.role-pill:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

body.theme-light .role-pill:hover {
    background: #cbd5e1;
}

.role-pill.active {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #060913;
    box-shadow: 0 4px 15px var(--accent-glow);
}

body.theme-light .role-pill.active {
    background: linear-gradient(135deg, #2563eb, #0284c7);
    color: #ffffff;
}

.form-group {
    margin-bottom: 18px;
    text-align: right;
}

html[dir="ltr"] .form-group {
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.form-group label i {
    color: var(--accent-cyan);
    margin-left: 4px;
}

html[dir="ltr"] .form-group label i {
    margin-left: 0;
    margin-right: 4px;
}

input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 12px 14px;
    color: var(--input-text);
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 14px var(--accent-glow);
}

select option {
    background: var(--modal-bg);
    color: var(--text-primary);
}

.gate-security-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ==============================================================================
   الأزرار العامة
   ============================================================================== */
.btn {
    border: none;
    border-radius: 12px;
    padding: 10px 18px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #060913;
}

body.theme-light .btn-primary {
    background: linear-gradient(135deg, #2563eb, #0284c7);
    color: #ffffff;
}

.btn-primary:hover {
    box-shadow: 0 6px 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
    border-color: var(--accent-cyan);
}

.btn-accent {
    background: linear-gradient(135deg, #8b5cf6, #d946ef);
    color: #ffffff;
}

.btn-danger-soft {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger-soft:hover {
    background: var(--accent-crimson);
    color: #ffffff;
}

.btn-block {
    width: 100%;
}

.btn-glow {
    box-shadow: 0 0 15px var(--accent-glow);
}

.text-cyan {
    color: var(--accent-cyan) !important;
}

/* ==============================================================================
   الترويسة وقضيب التصفح العلوي
   ============================================================================== */
.app-header {
    background: var(--bg-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.header-main-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    padding-bottom: 14px;
    gap: 16px;
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-logo-glow {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent-sub-bg);
    border: 1.5px solid var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px var(--accent-glow);
    flex-shrink: 0;
}

.brand-logo-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.brand-text h1 {
    font-size: 1.25rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.2;
}

.badge-role {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    background: var(--badge-bg);
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
}

.brand-text p {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.header-user-panel {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-profile-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-surface-sub);
    padding: 5px 12px 5px 6px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
}

html[dir="ltr"] .user-profile-badge {
    padding: 5px 6px 5px 12px;
}

.user-avatar-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #ffffff;
    font-weight: 800;
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-meta-details {
    display: flex;
    flex-direction: column;
    text-align: right;
    line-height: 1.2;
}

html[dir="ltr"] .user-meta-details {
    text-align: left;
}

.user-meta-details strong {
    font-size: 0.88rem;
    color: var(--text-primary);
}

.user-meta-details span {
    font-size: 0.74rem;
    color: var(--text-muted);
}

.header-actions-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-icon-action {
    background: var(--btn-secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--btn-secondary-text);
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 700;
    transition: var(--transition);
}

.btn-icon-action:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-1px);
}

/* شريط تبويبات الأدوار */
.role-nav-bar {
    padding-bottom: 10px;
    overflow-x: auto;
    scrollbar-width: none;
}

.role-nav-bar::-webkit-scrollbar {
    display: none;
}

.nav-tabs-wrapper {
    display: flex;
    gap: 8px;
    min-width: max-content;
}

.nav-tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 12px;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.nav-tab-btn:hover {
    color: var(--text-primary);
    background: var(--btn-secondary-bg);
}

.nav-tab-btn.active {
    background: var(--badge-bg);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* ==============================================================================
   المحتوى الرئيسي وبطاقات الإحصائيات
   ============================================================================== */
.main-content-wrapper {
    padding-top: 24px;
    padding-bottom: 60px;
    flex: 1;
}

.stats-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-metric-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    padding: 20px 18px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.stat-metric-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.stat-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: var(--accent-sub-bg);
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.stat-details h3 {
    font-size: 1.55rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-details p {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* بطاقة البحث والفلترة */
.filters-card-wrapper {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    padding: 16px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.search-input-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-cyan);
    font-size: 1rem;
}

html[dir="ltr"] .search-icon {
    right: auto;
    left: 14px;
}

.search-input-box input {
    padding-right: 42px;
    padding-left: 16px;
}

html[dir="ltr"] .search-input-box input {
    padding-right: 16px;
    padding-left: 42px;
}

.quick-category-pills {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.cat-pill {
    background: var(--btn-secondary-bg);
    border: 1px solid var(--border-color);
    color: var(--btn-secondary-text);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.cat-pill:hover,
.cat-pill.active {
    background: var(--accent-blue);
    color: #ffffff;
    border-color: var(--accent-blue);
}

/* ==============================================================================
   الأقسام وعناوين اللوحات
   ============================================================================== */
.section-title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    gap: 14px;
    flex-wrap: wrap;
}

.section-title-bar h2 {
    font-size: 1.3rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title-bar p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 3px;
}

.btn-group-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ==============================================================================
   شبكة المحاضرات والملفات
   ============================================================================== */
.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.material-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.material-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-cyan);
    opacity: 0.7;
}

.material-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15), var(--shadow-glow);
}

.material-card-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.material-type-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-sub-bg);
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.material-info-top {
    flex: 1;
}

.material-badge-row {
    display: flex;
    gap: 6px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.badge-subject {
    background: rgba(37, 99, 235, 0.16);
    color: var(--accent-blue);
    border: 1px solid rgba(37, 99, 235, 0.35);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
}

.badge-file-num {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.35);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
}

.material-title {
    font-size: 1.08rem;
    font-weight: 800;
    margin-bottom: 6px;
    line-height: 1.35;
}

.material-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.material-publisher-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 10px;
    border-top: 1px solid var(--divider-color);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.material-meta-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding-top: 8px;
}

.meta-stats-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.meta-stat-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: var(--transition);
}

.meta-stat-item:hover {
    color: var(--accent-cyan);
}

.meta-stat-item.liked {
    color: #f43f5e;
}

.material-card-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.btn-download-action {
    flex: 1;
}

/* ==============================================================================
   تسليم الواجبات والتقارير
   ============================================================================== */
.task-submission-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    padding: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.card-header-styled {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.header-big-icon {
    font-size: 2.2rem;
}

.form-grid-two {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.drag-file-box {
    border: 2px dashed var(--border-color);
    border-radius: 14px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    background: var(--bg-surface-sub);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.drag-file-box:hover {
    border-color: var(--accent-cyan);
    background: var(--accent-sub-bg);
}

.drag-icon {
    font-size: 1.8rem;
    color: var(--accent-cyan);
}

.progress-bar-box {
    height: 8px;
    background: var(--divider-color);
    border-radius: 6px;
    overflow: hidden;
    margin: 14px 0;
    display: none;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    transition: width 0.3s ease;
}

/* ==============================================================================
   الجداول وقوائم الحضور
   ============================================================================== */
.table-responsive-wrapper {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    overflow-x: auto;
}

.styled-tech-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    text-align: right;
}

html[dir="ltr"] .styled-tech-table {
    text-align: left;
}

.styled-tech-table th {
    background: var(--table-header-bg);
    color: var(--text-secondary);
    padding: 14px 16px;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.styled-tech-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--divider-color);
    color: var(--text-primary);
}

.styled-tech-table tr:hover td {
    background: var(--table-row-hover);
}

/* ==============================================================================
   سجل الطلاب وتقييم الأستاذ
   ============================================================================== */
.students-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.student-card-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
}

.student-card-item:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

.student-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.student-card-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent-sub-bg);
    color: var(--accent-cyan);
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.student-rating-stars {
    color: #fbbf24;
    font-size: 0.92rem;
}

/* بطاقات تصحيح الواجبات */
.grading-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 18px;
}

.grading-card-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: var(--card-radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.status-badge-graded {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.74rem;
    font-weight: 700;
}

.status-badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-amber);
    border: 1px solid var(--accent-amber);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.74rem;
    font-weight: 700;
}

/* خط زمني لمراقبة المشرف */
.audit-timeline-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.audit-entry-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: 12px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    font-size: 0.88rem;
}

/* صناديق تفاعلية قابلة لإعادة الاستخدام */
.info-sub-box {
    background: var(--bg-surface-sub);
    border: 1px solid var(--divider-color);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.84rem;
    color: var(--text-secondary);
}

.highlight-accent-box {
    background: var(--accent-sub-bg);
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--accent-sub-border);
    margin-bottom: 14px;
}

.grade-feedback-box {
    background: var(--grade-box-bg);
    padding: 12px;
    border-radius: 10px;
    border: 1px solid var(--grade-box-border);
    margin-top: 10px;
}

.row-item-divider {
    border-bottom: 1px solid var(--divider-color);
}

.user-row-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    border-radius: 12px;
    padding: 14px 18px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

/* ==============================================================================
   النوافذ المنبثقة (Modals)
   ============================================================================== */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(6, 9, 19, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 16px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

body.theme-light .modal-backdrop {
    background: rgba(15, 23, 42, 0.65);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 26px;
    box-shadow: var(--card-shadow), var(--shadow-glow);
    animation: modalSlideUp 0.3s ease-out;
}

@keyframes modalSlideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--divider-color);
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 8px;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.close-btn:hover {
    color: var(--accent-crimson);
}

.modal-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

/* نظام التنبيهات Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-surface-elevated);
    border: 1px solid var(--accent-cyan);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: var(--card-shadow), var(--shadow-glow);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10000;
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.35s ease;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-icon {
    color: var(--accent-cyan);
    font-size: 1.1rem;
}

/* الفوتر */
.app-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    margin-top: auto;
    text-align: center;
    font-size: 0.84rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-content p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 4px;
}

.footer-sub-text {
    font-size: 0.74rem;
    color: var(--text-muted);
}

/* ==============================================================================
   التوافق مع كافة الشاشات والأجهزة (Responsive Queries)
   ============================================================================== */
@media (max-width: 992px) {
    .form-grid-two {
        grid-template-columns: 1fr;
    }

    .header-main-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .header-user-panel {
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 14px;
    }

    .login-gate-card {
        padding: 24px 18px;
        border-radius: 20px;
    }

    .brand-text h1 {
        font-size: 1.1rem;
    }

    .materials-grid {
        grid-template-columns: 1fr;
    }

    .task-submission-card {
        padding: 20px 16px;
    }

    .stat-metric-card {
        padding: 16px;
    }

    .stat-icon-wrapper {
        width: 42px;
        height: 42px;
        font-size: 1.15rem;
    }

    .stat-details h3 {
        font-size: 1.35rem;
    }

    .styled-tech-table th,
    .styled-tech-table td {
        padding: 10px 12px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .role-selector-pills {
        grid-template-columns: 1fr;
    }

    .role-pill {
        flex-direction: row;
        justify-content: center;
    }

    .brand-container {
        gap: 10px;
    }

    .user-profile-badge {
        padding: 4px 8px;
    }

    .user-avatar-circle {
        width: 30px;
        height: 30px;
        font-size: 0.75rem;
    }

    .user-meta-details strong {
        font-size: 0.8rem;
    }

    .user-meta-details span {
        font-size: 0.68rem;
    }

    .btn-icon-action {
        width: 34px;
        height: 34px;
    }

    .modal-card {
        padding: 20px 16px;
    }
}