/* IsnadSys — نظام تصميم موحّد */
:root {
    --color-primary: #0d9488;
    --color-primary-hover: #0f766e;
    --color-primary-light: #ccfbf1;
    --color-primary-muted: rgba(13, 148, 136, 0.12);
    --color-bg: #f1f5f9;
    --color-bg-accent: linear-gradient(135deg, #f0fdfa 0%, #f1f5f9 45%, #eff6ff 100%);
    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;
    --color-border: #e2e8f0;
    --color-border-subtle: #f1f5f9;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-text-subtle: #94a3b8;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.08);
    --shadow-primary: 0 8px 24px rgba(13, 148, 136, 0.22);
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --nav-height: 4rem;
    --sidebar-width: 17rem;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark {
    --color-primary: #2dd4bf;
    --color-primary-hover: #5eead4;
    --color-primary-light: rgba(45, 212, 191, 0.15);
    --color-primary-muted: rgba(45, 212, 191, 0.1);
    --color-bg: #020617;
    --color-bg-accent: linear-gradient(135deg, #020617 0%, #0f172a 50%, #042f2e 100%);
    --color-surface: #0f172a;
    --color-surface-elevated: #1e293b;
    --color-border: #1e293b;
    --color-border-subtle: #334155;
    --color-text: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-subtle: #64748b;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.35);
    --shadow-primary: 0 8px 24px rgba(45, 212, 191, 0.15);
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: 'Cairo', system-ui, sans-serif;
    background: var(--color-bg-accent);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ——— أزرار ——— */
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #0891b2 100%);
    color: #fff;
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.05);
    color: #fff;
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
    background: var(--color-border-subtle);
    border-color: var(--color-text-subtle);
}

.btn-danger {
    background: #dc2626;
    color: #fff;
}
.btn-danger:hover {
    background: #b91c1c;
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    padding: 0.5rem 0.75rem;
}
.btn-ghost:hover {
    background: var(--color-primary-muted);
    color: var(--color-primary);
}

/* ——— نماذج ——— */
.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.375rem;
}

.form-input,
.form-input input,
.form-input select,
.form-input textarea,
input.form-input,
select.form-input,
textarea.form-input {
    width: 100%;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.875rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.grade-input-invalid {
    border-color: #dc2626 !important;
    box-shadow: 0 0 0 1px #dc2626;
}

.form-input:focus,
.form-input input:focus,
input.form-input:focus,
select.form-input:focus,
textarea.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.dark .form-input,
.dark input.form-input,
.dark select.form-input,
.dark textarea.form-input {
    background: var(--color-surface-elevated);
    border-color: var(--color-border-subtle);
}

/* ——— بطاقات ——— */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition);
}

.card:not(.card-flat):hover { box-shadow: var(--shadow-md); }

.card-flat {
    box-shadow: none;
}
.card-flat:hover { box-shadow: none; transform: none; }

.card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

.card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

/* ——— بطاقات إحصائية ——— */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 768px) {
    .stat-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
    .stat-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
    .stat-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 100%;
    background: var(--stat-accent, var(--color-primary));
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.stat-card .stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    font-weight: 500;
}

.stat-card .stat-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.75rem;
    opacity: 0.15;
}

.stat-card.accent-amber { --stat-accent: #f59e0b; }
.stat-card.accent-emerald { --stat-accent: #10b981; }
.stat-card.accent-red { --stat-accent: #ef4444; }
.stat-card.accent-blue { --stat-accent: #3b82f6; }
.stat-card.accent-teal { --stat-accent: var(--color-primary); }

/* ——— شارات الحالة ——— */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.badge-pending {
    background: #fef3c7;
    color: #b45309;
}
.badge-accepted {
    background: #d1fae5;
    color: #047857;
}
.badge-rejected {
    background: #fee2e2;
    color: #b91c1c;
}

.dark .badge-pending { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.dark .badge-accepted { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.dark .badge-rejected { background: rgba(239, 68, 68, 0.2); color: #f87171; }

/* ——— جداول ——— */
.data-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
}

.data-table {
    width: 100%;
    font-size: 0.875rem;
    border-collapse: collapse;
    min-width: 32rem;
}

.data-table thead {
    background: var(--color-border-subtle);
}

.data-table th {
    text-align: right;
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.data-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-border-subtle);
    color: var(--color-text);
}

.data-table tbody tr {
    transition: background var(--transition);
}

.data-table tbody tr:hover {
    background: var(--color-primary-muted);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.table-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}
.table-link:hover {
    text-decoration: underline;
}

/* ——— تنبيهات ——— */
.alert {
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
    border: 1px solid;
}

.alert-success { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }
.alert-error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.alert-warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.alert-info { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }

.dark .alert-success { background: rgba(16, 185, 129, 0.1); border-color: rgba(16, 185, 129, 0.3); color: #6ee7b7; }
.dark .alert-error { background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.3); color: #fca5a5; }
.dark .alert-warning { background: rgba(245, 158, 11, 0.1); border-color: rgba(245, 158, 11, 0.3); color: #fcd34d; }
.dark .alert-info { background: rgba(59, 130, 246, 0.1); border-color: rgba(59, 130, 246, 0.3); color: #93c5fd; }

/* ——— رأس الصفحة ——— */
.page-header {
    margin-bottom: 1.75rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
    margin: 0;
}

.page-header p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0.375rem 0 0;
}

.page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

@media (min-width: 640px) {
    .page-header-row {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 1rem;
    }
    .page-header-row .page-actions {
        margin-top: 0;
        flex-shrink: 0;
    }
}

/* ——— شريط التنقل ——— */
.app-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.dark .app-nav {
    background: rgba(15, 23, 42, 0.9);
}

.app-nav-inner {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text);
}

.brand-logo {
    width: 2.25rem;
    height: 2.25rem;
    background: linear-gradient(135deg, var(--color-primary), #0891b2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 1rem;
    box-shadow: var(--shadow-primary);
}

.brand-name {
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: -0.01em;
}

/* ——— شعار المنصة IsnadSys ——— */
.platform-logo {
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.platform-logo-sm { max-height: 2.5rem; }
.platform-logo-md { max-height: 3.25rem; }
.platform-logo-lg { max-height: 5.5rem; }
.platform-logo-xl { max-height: 9rem; }

.brand .platform-logo-sm {
    max-height: 2.75rem;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-user {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    padding: 0 0.5rem;
    max-width: 10rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.icon-btn {
    width: 2.25rem;
    height: 2.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    text-decoration: none;
}

.icon-btn:hover {
    background: var(--color-primary-muted);
    color: var(--color-primary);
    border-color: transparent;
}

.notif-badge {
    position: absolute;
    top: -4px;
    left: -4px;
    min-width: 1.125rem;
    height: 1.125rem;
    padding: 0 4px;
    background: #ef4444;
    color: #fff;
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ——— لوحة التحكم ——— */
.dashboard-layout {
    max-width: 80rem;
    margin: 0 auto;
    padding: 1.5rem 1rem 2rem;
}

@media (min-width: 1024px) {
    .dashboard-layout {
        display: grid;
        grid-template-columns: var(--sidebar-width) 1fr;
        gap: 1.5rem;
        align-items: start;
    }
}

.sidebar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 1024px) {
    .sidebar {
        position: sticky;
        top: calc(var(--nav-height) + 1rem);
    }
}

.sidebar-label {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-subtle);
    margin-bottom: 0.25rem;
}

.sidebar-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.sidebar-link:hover {
    background: var(--color-primary-muted);
    color: var(--color-primary);
}

.sidebar-link.active {
    background: var(--color-primary-muted);
    color: var(--color-primary);
    font-weight: 600;
    border-color: rgba(13, 148, 136, 0.2);
    box-shadow: inset 3px 0 0 var(--color-primary);
}

.sidebar-link .link-icon {
    font-size: 1.125rem;
    width: 1.5rem;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text);
    cursor: pointer;
}

@media (min-width: 1024px) {
    .sidebar-toggle { display: none; }
}

.sidebar-panel {
    display: none;
}

@media (min-width: 1024px) {
    .sidebar-panel { display: block !important; }
}

.sidebar-panel.open {
    display: block;
    margin-bottom: 1rem;
}

.dashboard-main {
    min-width: 0;
}

/* ——— صفحة الهبوط ——— */
.hero {
    padding: 4rem 1rem 5rem;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--color-primary-muted), transparent);
    pointer-events: none;
}

.hero-logo {
    margin: 0 auto 1.5rem;
    position: relative;
}

.hero-logo .platform-logo-xl {
    margin-inline: auto;
    filter: drop-shadow(0 8px 24px rgba(13, 148, 136, 0.15));
}

.hero h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
    position: relative;
}

.hero-sub {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    position: relative;
}

.hero-domain {
    color: var(--color-primary);
    font-size: 0.8125rem;
    font-weight: 600;
    margin: 0.5rem 0 2rem;
    position: relative;
}

.hero-desc {
    max-width: 36rem;
    margin: 0 auto 2.5rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    position: relative;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 48rem;
    margin: 4rem auto 0;
    text-align: right;
}

@media (min-width: 640px) {
    .feature-grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-card h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    margin: 0 0 0.375rem;
}

.feature-card p {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ——— صفحات المصادقة ——— */
.auth-page {
    min-height: calc(100vh - var(--nav-height) - 5rem);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.auth-card {
    width: 100%;
    max-width: 26rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.auth-card.wide {
    max-width: 32rem;
}

.auth-card h1 {
    font-size: 1.375rem;
    font-weight: 800;
    margin: 0 0 0.25rem;
    letter-spacing: -0.02em;
}

.auth-card .auth-sub {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.auth-footer {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 1.5rem;
}

.auth-footer a {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}
.auth-footer a:hover { text-decoration: underline; }

/* ——— قوائم وفلاتر ——— */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.filter-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--color-text-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.filter-pill:hover,
.filter-pill.active {
    background: var(--color-primary-muted);
    color: var(--color-primary);
    border-color: rgba(13, 148, 136, 0.3);
}

/* ——— عناصر متنوعة ——— */
.empty-state {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.timeline-item {
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    transition: border-color var(--transition);
}

.timeline-item:hover {
    border-color: var(--color-primary);
}

.dl-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.5rem 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

.dl-row:last-child { border-bottom: none; }
.dl-row dt { color: var(--color-text-muted); }
.dl-row dd { font-weight: 500; text-align: left; }

.app-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 1.25rem;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.messages-wrap {
    max-width: 80rem;
    margin: 0 auto;
    padding: 1rem 1rem 0;
}

/* ——— شعارات الجامعات ——— */
.uni-logo {
    object-fit: contain;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    flex-shrink: 0;
}

.uni-logo-sm { width: 2.25rem; height: 2.25rem; padding: 0.2rem; }
.uni-logo-md { width: 3rem; height: 3rem; padding: 0.25rem; }
.uni-logo-lg { width: 4.5rem; height: 4.5rem; padding: 0.35rem; }
.uni-logo-xl { width: 5.5rem; height: 5.5rem; padding: 0.5rem; border-radius: var(--radius-lg); }

.uni-logo-fallback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary), #0891b2);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    box-shadow: var(--shadow-primary);
}

.uni-logo-fallback.uni-logo-sm { width: 2.25rem; height: 2.25rem; font-size: 1rem; }
.uni-logo-fallback.uni-logo-md { width: 3rem; height: 3rem; font-size: 1.25rem; }
.uni-logo-fallback.uni-logo-lg { width: 4.5rem; height: 4.5rem; font-size: 1.75rem; border-radius: var(--radius-lg); }
.uni-logo-fallback.uni-logo-xl { width: 5.5rem; height: 5.5rem; font-size: 2rem; border-radius: var(--radius-xl); }

.uni-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: inherit;
}

.uni-card-body { min-width: 0; flex: 1; }

.portal-role-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.portal-role-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.portal-role-icon {
    font-size: 1.75rem;
    width: 2.75rem;
    text-align: center;
    flex-shrink: 0;
}

.portal-role-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.portal-role-title {
    font-weight: 700;
    font-size: 0.9375rem;
}

.portal-role-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.portal-role-arrow {
    color: var(--color-primary);
    font-weight: 700;
    flex-shrink: 0;
}

.sidebar-uni {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

/* ——— إسناد المشرفين حسب العنوان (ضمن قائمة الطلاب) ——— */
.quick-assign-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    min-width: 10rem;
}

.quick-assign-row select {
    flex: 1;
    min-width: 7rem;
}

.address-assign-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.address-assign-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border-subtle);
}

.address-assign-title {
    font-size: 1rem;
    font-weight: 800;
}

.address-assign-count {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.15rem;
}

.address-assign-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.address-assign-form select {
    min-width: 11rem;
}

.address-assign-students {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.address-assign-students li {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.35rem 0.65rem;
    padding: 0.45rem 0.65rem;
    border-radius: var(--radius-sm);
    background: var(--color-border-subtle);
    font-size: 0.8125rem;
}

.address-assign-addr {
    width: 100%;
    font-size: 0.7rem;
    color: var(--color-text-subtle);
    line-height: 1.4;
}

/* ——— التنقل العام ——— */
.public-nav-links {
    align-items: center;
    gap: 0.25rem;
}

.public-nav-link {
    padding: 0.45rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: color var(--transition), background var(--transition);
}

.public-nav-link:hover {
    color: var(--color-primary);
    background: var(--color-primary-muted);
}

/* ——— تذييل عام ——— */
.public-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.public-footer-inner {
    max-width: 72rem;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 1.5rem;
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 900px) {
    .public-footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 520px) {
    .public-footer-inner {
        grid-template-columns: 1fr;
    }
}

.public-footer-brand p {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-top: 0.75rem;
    max-width: 18rem;
}

.public-footer-col h4 {
    font-size: 0.875rem;
    font-weight: 800;
    margin: 0 0 0.75rem;
}

.public-footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.public-footer-col li {
    margin-bottom: 0.4rem;
}

.public-footer-col a {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-decoration: none;
}

.public-footer-col a:hover {
    color: var(--color-primary);
}

.public-footer-bottom {
    text-align: center;
    padding: 1rem 1.25rem 1.5rem;
    font-size: 0.75rem;
    color: var(--color-text-subtle);
    border-top: 1px solid var(--color-border-subtle);
}

/* ——— صفحات الهبوط ——— */
.landing-container {
    max-width: 72rem;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.landing-hero {
    position: relative;
    padding: 3rem 0 4rem;
    overflow: hidden;
}

.landing-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 80% 0%, rgba(30, 58, 95, 0.12), transparent),
        radial-gradient(ellipse 60% 50% at 10% 20%, var(--color-primary-muted), transparent);
    pointer-events: none;
}

.landing-hero-inner {
    position: relative;
    max-width: 42rem;
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.75rem;
}

.landing-hero-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem 1.75rem;
    background: linear-gradient(
        145deg,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(240, 253, 250, 0.9) 100%
    );
    border: 1px solid rgba(13, 148, 136, 0.15);
    border-radius: 1.25rem;
    box-shadow:
        0 4px 24px rgba(30, 58, 95, 0.08),
        0 0 0 1px rgba(255, 255, 255, 0.6) inset;
}

.dark .landing-hero-brand {
    background: linear-gradient(
        145deg,
        rgba(30, 41, 59, 0.9) 0%,
        rgba(15, 118, 110, 0.12) 100%
    );
    border-color: rgba(45, 212, 191, 0.2);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.landing-hero-brand .platform-logo,
.landing-hero-brand img.landing-hero-logo {
    max-height: 7.5rem;
    width: auto;
    height: auto;
    margin: 0 auto;
    filter: drop-shadow(0 6px 20px rgba(13, 148, 136, 0.2));
}

.landing-hero-brand .platform-logo {
    width: auto !important;
    max-width: min(100%, 18rem);
}

.landing-hero-brand .platform-logo img {
    width: auto !important;
    height: auto !important;
    max-height: 7.5rem;
    object-fit: contain;
}

.landing-hero-content {
    width: 100%;
}

.landing-hero-content h1 {
    font-size: clamp(1.65rem, 4.5vw, 2.35rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.25;
    margin: 0 0 1rem;
}

.landing-hero-lead {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    max-width: 34rem;
    margin: 0 auto 1.5rem;
}

.landing-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.landing-hero-auth {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.landing-section {
    padding: 3.5rem 0;
}

.landing-section-alt {
    background: rgba(255, 255, 255, 0.45);
}

.dark .landing-section-alt {
    background: rgba(15, 23, 42, 0.35);
}

.landing-section-head {
    text-align: center;
    margin-bottom: 2rem;
}

.landing-section-head h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.35rem;
}

.landing-section-head p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.landing-uni-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
    gap: 1rem;
}

.landing-uni-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: inherit;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.landing-uni-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.landing-uni-body h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    margin: 0 0 0.2rem;
}

.landing-uni-body p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin: 0;
}

.landing-uni-arrow {
    margin-right: auto;
    color: var(--color-primary);
    font-weight: 700;
}

.landing-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    gap: 1.25rem;
}

.landing-feature {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    text-align: right;
}

.landing-feature-icon {
    font-size: 1.75rem;
    display: block;
    margin-bottom: 0.75rem;
}

.landing-feature h3 {
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.landing-feature p {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin: 0;
}

.landing-cta {
    padding: 2.5rem 0 3.5rem;
}

.landing-cta-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    background: linear-gradient(135deg, #1e3a5f, #0f766e);
    color: #fff;
    border-radius: var(--radius-2xl);
    padding: 2rem 2.25rem;
    box-shadow: var(--shadow-lg);
}

.landing-cta-inner h2 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 0.35rem;
}

.landing-cta-inner p {
    font-size: 0.875rem;
    opacity: 0.9;
    margin: 0;
}

.landing-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.landing-cta .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.landing-empty {
    text-align: center;
    padding: 2rem;
    color: var(--color-text-muted);
}

.page-hero {
    text-align: center;
    padding: 2.5rem 1rem 1.5rem;
}

.page-hero-compact {
    padding-bottom: 0.5rem;
}

.page-hero h1 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 800;
    margin: 1rem 0 0.5rem;
}

.page-hero-lead {
    color: var(--color-text-muted);
    max-width: 36rem;
    margin: 0 auto;
    line-height: 1.7;
}

.landing-about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
    gap: 1.25rem;
}

.landing-about-card h2 {
    font-size: 1.05rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

.landing-about-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin: 0;
}

.landing-about-list,
.landing-about-steps {
    margin: 0;
    padding-right: 1.15rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.landing-about-list a,
.landing-about-steps a {
    color: var(--color-primary);
    font-weight: 600;
}

.contact-layout {
    display: grid;
    grid-template-columns: minmax(14rem, 22rem) 1fr;
    gap: 1.25rem;
    align-items: start;
}

@media (max-width: 768px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

.contact-info h2 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.contact-info > p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.contact-info-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
}

.contact-info-list li {
    margin-bottom: 0.85rem;
}

.contact-info-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.15rem;
}

.contact-info-list a {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

.contact-info-note {
    padding: 0.85rem;
    background: var(--color-primary-muted);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
}

.contact-info-note p {
    margin: 0.35rem 0 0;
    color: var(--color-text-muted);
    line-height: 1.55;
}

.phone-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.phone-input-row {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.phone-prefix-select {
    width: 6.5rem;
    min-width: 6.5rem;
    flex-shrink: 0;
    text-align: center;
    font-weight: 600;
}

.phone-number-input {
    flex: 1;
    min-width: 0;
}

.phone-input-hint {
    margin: 0;
}

.phone-display {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.phone-wa-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 9999px;
    background: #25d366;
    color: #fff;
    font-size: 0.85rem;
    text-decoration: none;
    line-height: 1;
    flex-shrink: 0;
}

.phone-wa-link:hover {
    filter: brightness(1.08);
}

.contact-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: 0.75rem;
}

.contact-tab {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: background var(--transition), color var(--transition);
}

.contact-tab:hover {
    background: var(--color-primary-muted);
    color: var(--color-primary);
}

.contact-tab.active {
    background: var(--color-primary);
    color: #fff;
}

/* ——— قائمة المشرفين — الطلاب المسندون ——— */
.supervisor-students-cell {
    min-width: 9rem;
    vertical-align: top;
}

.supervisor-students-details {
    display: inline-block;
    min-width: 8rem;
}

.supervisor-students-summary {
    list-style: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    user-select: none;
}

.supervisor-students-summary::-webkit-details-marker {
    display: none;
}

.supervisor-students-summary::before {
    content: '▸';
    font-size: 0.7rem;
    transition: transform var(--transition);
}

.supervisor-students-details[open] .supervisor-students-summary::before {
    transform: rotate(90deg);
}

.supervisor-students-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.5rem;
    padding: 0.1rem 0.45rem;
    border-radius: 999px;
    background: var(--color-primary-muted);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 800;
}

.supervisor-students-list {
    list-style: none;
    margin: 0.5rem 0 0;
    padding: 0.5rem;
    background: var(--color-border-subtle);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    min-width: 14rem;
    max-width: 18rem;
}

.supervisor-students-list li {
    padding: 0.45rem 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
}

.supervisor-students-list li:last-child {
    border-bottom: none;
}

.supervisor-student-link {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.supervisor-student-link:hover {
    color: var(--color-primary);
}

.supervisor-student-courses {
    font-size: 0.75rem;
    color: var(--color-primary);
    font-weight: 600;
    line-height: 1.45;
}

@media (max-width: 640px) {
    .card { padding: 1rem; }
    .stat-card .stat-value { font-size: 1.375rem; }
}