/* ═══════════════════════════════════════════════════════
   ZA — Layout Styles
   ═══════════════════════════════════════════════════════ */

/* ── Navbar (Public) ── */
.navbar {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: var(--header-height);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-sticky);
    transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
    background: rgba(13,17,23,0.95);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.navbar-logo .logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.navbar-logo:hover .logo-img {
    transform: scale(1.05);
}

/* Show light logo by default, hide dark logo */
.navbar-logo .logo-dark { display: none; }
.navbar-logo .logo-light { display: block; }

[data-theme="dark"] .navbar-logo .logo-dark { display: block; }
[data-theme="dark"] .navbar-logo .logo-light { display: none; }

.navbar-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.navbar-links a {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.navbar-links a:hover,
.navbar-links a.active { color: var(--primary-600); }

.navbar-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    right: 0;
    left: 0;
    height: 3px;
    background: var(--primary-600);
    border-radius: var(--radius-full);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* ── Mobile Menu ── */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--text-2xl);
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--space-2);
}

.show-mobile { display: none !important; }

@media (max-width: 768px) {
    .mobile-toggle { display: flex; }
    .navbar-links, .navbar-actions .hide-mobile { display: none; }
    .show-mobile { display: flex !important; }
    .navbar-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        right: 0;
        left: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        padding: var(--space-4);
        box-shadow: var(--shadow-lg);
    }
}

/* ── Dashboard Layout ── */
.dashboard {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: white;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 300;
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    will-change: transform;
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo .logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.1);
    transition: transform 0.3s ease;
}

.sidebar-logo:hover .logo-img {
    transform: scale(1.05);
}

.sidebar-nav {
    padding: var(--space-4);
    flex: 1;
}

.sidebar-section {
    margin-bottom: var(--space-6);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.4);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
    font-family: var(--font-heading);
    font-weight: 600;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: rgba(255,255,255,0.7);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    text-decoration: none;
    margin-bottom: var(--space-1);
}

.sidebar-link:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.sidebar-link.active {
    background: rgba(255,255,255,0.15);
    color: white;
    font-weight: 600;
}

.sidebar-link .link-icon { font-size: var(--text-lg); width: 24px; text-align: center; }

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* ── Main Content ── */
.main-content {
    flex: 1;
    margin-right: var(--sidebar-width);
    min-height: 100vh;
    transition: margin var(--transition-normal);
}

.content-header {
    padding: var(--space-6) var(--space-8);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.content-header h1 {
    font-size: var(--text-2xl);
    margin: 0;
}

.content-body {
    padding: var(--space-8);
}

/* ── Grid Layouts ── */
.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.grid-courses {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-6);
}

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-6); }

/* ── Hero Section ── */
.hero {
    background: var(--gradient-hero);
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,143,0,0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(92,107,192,0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 650px;
}

.hero-content h1 {
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    line-height: 1.2;
    font-weight: 800;
}

.hero-content p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
    margin-top: var(--space-8);
}

.hero-stat {
    text-align: center;
}

.hero-stat .stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 900;
    color: var(--accent-400);
    display: block;
}

.hero-stat .stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
}

/* ── Sidebar Overlay ── */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    z-index: 250;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ── Footer ── */
.footer {
    background: var(--primary-900);
    color: white;
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-10);
}

.footer h4 {
    color: white;
    margin-bottom: var(--space-4);
    font-size: var(--text-lg);
}

.footer p, .footer a {
    color: rgba(255,255,255,0.6);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

.footer a:hover { color: var(--accent-400); }

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-6);
    text-align: center;
    color: rgba(255,255,255,0.4);
    font-size: var(--text-sm);
}

/* ── Course Card ── */
.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.course-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--bg-tertiary);
    position: relative;
    border-bottom: 1px solid var(--border-light);
}

.course-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.course-card:hover .course-card-img img {
    transform: scale(1.05);
}

.course-card-img .card-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    z-index: 2;
}

.course-card-body {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card-body h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    line-height: 1.4;
    font-weight: 700;
}

.course-card-body .course-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--space-4);
}

.course-card-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.course-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-light);
}

/* ── Filters Bar ── */
.filters-bar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    align-items: flex-end;
}

.filters-bar .filter-group {
    flex: 1;
    min-width: 180px;
}

.filters-bar .filter-group label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: var(--space-2);
    font-family: var(--font-heading);
}

.search-input-wrapper {
    position: relative;
}

.search-input-wrapper .search-icon {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.search-input-wrapper input {
    padding-right: var(--space-10);
}

/* ── Responsive Dashboard ── */
@media (max-width: 1024px) {
    .grid-stats { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        /* RTL: sidebar is on right, hide it by pushing RIGHT (off-screen) */
        transform: translateX(100%);
        width: min(280px, 85vw);
        /* z-index already set globally to 300 */
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: -8px 0 32px rgba(0,0,0,0.3);
    }
    .main-content {
        margin-right: 0;
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
    }
    .content-body {
        padding: var(--space-4);
        overflow-x: hidden;
    }
    .content-header {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
        gap: var(--space-2);
        position: sticky;
        top: 0;
        z-index: 10;
    }
    .content-header h1 { font-size: var(--text-xl); }
    .grid-stats { grid-template-columns: repeat(2, 1fr); }
    .grid-courses { grid-template-columns: 1fr; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero { min-height: auto; padding: var(--space-24) 0 var(--space-16); }
    .hero-stats { flex-wrap: wrap; gap: var(--space-6); }
    .footer-grid { grid-template-columns: 1fr; }
    .filters-bar { flex-direction: column; }
    .filters-bar .filter-group { min-width: 100%; }
    .stat-card { padding: var(--space-4); }
    .stat-card .stat-icon { width: 44px; height: 44px; font-size: var(--text-xl); }
    .modal { margin: var(--space-4); max-width: calc(100vw - 2rem); }
    .modal-footer { flex-wrap: wrap; }
}

@media (max-width: 576px) {
    .grid-stats { grid-template-columns: 1fr; }
    .content-header h1 { font-size: var(--text-lg); }
    .stat-card { flex-direction: column; text-align: center; }
    .table th, .table td { padding: var(--space-2) var(--space-3); font-size: var(--text-xs); }
    .btn { font-size: var(--text-xs); padding: var(--space-2) var(--space-3); }
    .btn-lg { font-size: var(--text-sm); padding: var(--space-3) var(--space-5); }
}

@media (max-width: 480px) {
    .grid-stats { grid-template-columns: 1fr; }
    .content-header h1 { font-size: var(--text-lg); }
    .stat-card { flex-direction: column; text-align: center; }
    .table th, .table td { padding: var(--space-2) var(--space-3); font-size: var(--text-xs); }
    .btn { font-size: var(--text-xs); padding: var(--space-2) var(--space-3); }
    .btn-lg { font-size: var(--text-sm); padding: var(--space-3) var(--space-5); }
}

/* ── Dashboard Table Action Buttons ── */
/* On mobile, stack action buttons vertically inside table cells */
@media (max-width: 640px) {
    /* Wrap action cell buttons */
    .table td:last-child {
        display: flex;
        flex-direction: column;
        gap: var(--space-1);
        align-items: flex-start;
    }
    .table td:last-child .btn {
        width: 100%;
        justify-content: center;
    }

    /* Hide less critical table columns on very small screens */
    .table .hide-xs { display: none; }

    /* Pagination wraps */
    .pagination {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-1);
    }

    /* Notif dropdown full width on mobile */
    .notification-wrapper > div[id="notif-dropdown"] {
        width: calc(100vw - var(--space-8)) !important;
        left: auto !important;
        right: 0 !important;
    }

    /* Manage lessons filter row */
    #page-manage-lessons > div:first-child {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
    #page-manage-lessons > div:first-child > div {
        display: flex;
        flex-direction: column;
        gap: var(--space-2);
        width: 100%;
    }
    #lesson-course-filter {
        width: 100% !important;
        margin: 0 !important;
        display: block !important;
    }
}