/* SunuLearn - Modern E-Learning Platform Styles */

/* === RESET & BASE === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary: #0f172a;
    --accent: #f59e0b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --transition: all 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--gray-900);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

p { color: var(--gray-600); }

/* === LAYOUT === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-sm {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === NAVBAR === */
.navbar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--primary);
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.navbar-nav a {
    color: var(--gray-600);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
}

.navbar-nav a:hover, .navbar-nav a.active {
    color: var(--primary);
    background: var(--primary-light);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.user-name {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-700);
    padding: 4px;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #059669;
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

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

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

/* === CARDS === */
.card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-body {
    padding: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.card-header h3 {
    font-size: 1.1rem;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
}

/* === FORMS === */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: white;
    color: var(--gray-800);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-control::placeholder {
    color: var(--gray-400);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: 4px;
}

/* === ALERTS === */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: var(--primary-light);
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* === TABLES === */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--gray-50);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--gray-200);
}

td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.9rem;
}

tr:hover {
    background: var(--gray-50);
}

tr:last-child td {
    border-bottom: none;
}

/* === BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-primary {
    background: var(--primary-light);
    color: #1e40af;
}

.badge-gray {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* === SIDEBAR LAYOUT === */
.layout-wrapper {
    display: flex;
    min-height: calc(100vh - 64px);
}

.sidebar {
    width: 260px;
    background: white;
    border-right: 1px solid var(--gray-200);
    padding: 24px 0;
    position: sticky;
    top: 64px;
    height: calc(100vh - 64px);
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar-section {
    padding: 0 16px;
    margin-bottom: 24px;
}

.sidebar-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-400);
    padding: 0 12px;
    margin-bottom: 8px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

.sidebar-link:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.sidebar-link.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.sidebar-link .icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.main-content {
    flex: 1;
    padding: 32px;
    min-width: 0;
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
    color: white;
    padding: 80px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.hero h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: 16px;
    position: relative;
}

.hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 32px;
    position: relative;
}

.hero .btn {
    position: relative;
}

.hero .btn-white {
    background: white;
    color: var(--primary);
    font-weight: 700;
}

.hero .btn-white:hover {
    background: var(--gray-100);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.hero .btn-outline-white {
    background: transparent;
    border: 2px solid white;
    color: white;
    font-weight: 700;
}

.hero .btn-outline-white:hover {
    background: white;
    color: var(--primary);
}

/* === FEATURES GRID === */
.features {
    padding: 80px 24px;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: white;
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.feature-icon.blue { background: var(--primary-light); color: var(--primary); }
.feature-icon.green { background: #d1fae5; color: #059669; }
.feature-icon.purple { background: #ede9fe; color: #7c3aed; }
.feature-icon.orange { background: #ffedd5; color: #ea580c; }
.feature-icon.red { background: #fee2e2; color: #dc2626; }
.feature-icon.teal { background: #ccfbf1; color: #0d9488; }

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.15rem;
}

.feature-card p {
    font-size: 0.9rem;
    line-height: 1.7;
}

/* === STATS === */
.stats-section {
    padding: 60px 24px;
    background: white;
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.stats-grid {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-item p {
    font-size: 0.9rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* === DASHBOARD STATS CARDS === */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-card .icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.stat-card .stat-info h3 {
    font-size: 1.5rem;
    margin-bottom: 2px;
}

.stat-card .stat-info p {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* === GRID === */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* === AUTH PAGES - MODERN SPLIT LAYOUT === */
.auth-page {
    min-height: 100vh;
    display: flex;
}

.auth-visual {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1e3a8a 0%, #4f46e5 50%, #7c3aed 100%);
}

.auth-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.auth-visual-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.85) 0%, rgba(79, 70, 229, 0.75) 50%, rgba(124, 58, 237, 0.85) 100%);
    z-index: 1;
}

.auth-visual-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
    padding: 48px;
    max-width: 500px;
}

.auth-visual-content h1 {
    color: white;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.auth-visual-content p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 32px;
}

.auth-visual-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
}

.auth-visual-feature {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 14px 20px;
    transition: var(--transition);
}

.auth-visual-feature:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateX(4px);
}

.auth-visual-feature .feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.auth-visual-feature span {
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
}

.auth-form-side {
    flex: 0 0 520px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px;
    background: var(--gray-50);
    position: relative;
    overflow-y: auto;
}

.auth-form-side::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -120px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(124, 58, 237, 0.06));
    pointer-events: none;
}

.auth-form-side::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.04), rgba(37, 99, 235, 0.04));
    pointer-events: none;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 40px;
    text-decoration: none;
}

.auth-brand-logo {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.auth-brand-name {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-header {
    margin-bottom: 32px;
}

.auth-header h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

.auth-body {
    background: white;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 24px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--gray-200);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 24px 0;
    color: var(--gray-400);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

.auth-social {
    display: flex;
    gap: 12px;
}

.auth-social-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.auth-social-btn:hover {
    border-color: var(--gray-300);
    background: var(--gray-50);
    transform: translateY(-1px);
}

.auth-social-btn svg {
    width: 20px;
    height: 20px;
}

.auth-input-group {
    position: relative;
}

.auth-input-group .form-control {
    padding-left: 44px;
}

.auth-input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition);
}

.auth-input-group:focus-within .auth-input-icon {
    color: var(--primary);
}

.auth-password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
    font-size: 1rem;
    transition: var(--transition);
}

.auth-password-toggle:hover {
    color: var(--gray-600);
}

.auth-remember {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    font-size: 0.85rem;
}

.auth-remember label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--gray-600);
    font-weight: 500;
}

.auth-remember input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

.auth-remember a {
    font-weight: 600;
    font-size: 0.85rem;
}

.auth-footer {
    text-align: center;
    margin-top: 28px;
    font-size: 0.9rem;
    color: var(--gray-500);
}

.auth-footer a {
    font-weight: 700;
    color: var(--primary);
}

.auth-footer a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Floating animation for visual side */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

.auth-visual-content .auth-visual-feature:nth-child(1) { animation: float 4s ease-in-out infinite; }
.auth-visual-content .auth-visual-feature:nth-child(2) { animation: float 4s ease-in-out infinite 0.5s; }
.auth-visual-content .auth-visual-feature:nth-child(3) { animation: float 4s ease-in-out infinite 1s; }

/* Password strength indicator */
.password-strength {
    display: flex;
    gap: 4px;
    margin-top: 8px;
}

.password-strength-bar {
    flex: 1;
    height: 4px;
    border-radius: 2px;
    background: var(--gray-200);
    transition: var(--transition);
}

.password-strength.weak .password-strength-bar:nth-child(1) { background: var(--danger); }
.password-strength.medium .password-strength-bar:nth-child(1),
.password-strength.medium .password-strength-bar:nth-child(2) { background: var(--warning); }
.password-strength.strong .password-strength-bar { background: var(--success); }

.password-strength-text {
    font-size: 0.75rem;
    margin-top: 4px;
    font-weight: 600;
}

.password-strength.weak .password-strength-text { color: var(--danger); }
.password-strength.medium .password-strength-text { color: var(--warning); }
.password-strength.strong .password-strength-text { color: var(--success); }

/* === FOOTER === */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 48px 24px 24px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
}

.footer h4 {
    color: white;
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer p {
    color: var(--gray-400);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    max-width: 1200px;
    margin: 32px auto 0;
    padding-top: 24px;
    border-top: 1px solid var(--gray-700);
    text-align: center;
    font-size: 0.85rem;
}

/* === EMPTY STATE === */
.empty-state {
    text-align: center;
    padding: 60px 24px;
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--gray-500);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* === PAGE HEADER === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h2 {
    font-size: 1.5rem;
}

.page-header p {
    font-size: 0.9rem;
    margin-top: 4px;
}

/* === MODAL === */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: white;
    border-radius: var(--radius);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-400);
    padding: 0 4px;
    line-height: 1;
}

.modal-close:hover {
    color: var(--gray-700);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background: var(--gray-50);
}

/* === UTILITIES === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.75rem; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    
    .sidebar {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        width: 280px;
        z-index: 99;
        box-shadow: var(--shadow-lg);
    }
    
    .sidebar.open {
        display: block;
    }
    
    .main-content {
        padding: 20px 16px;
    }
    
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .navbar-nav {
        display: none;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    /* Auth responsive - stack on mobile */
    .auth-page {
        flex-direction: column;
    }

    .auth-visual {
        min-height: 280px;
        flex: none;
    }

    .auth-visual-content h1 {
        font-size: 1.75rem;
    }

    .auth-visual-content p {
        font-size: 0.95rem;
        margin-bottom: 20px;
    }

    .auth-visual-features {
        gap: 10px;
    }

    .auth-visual-feature {
        padding: 10px 14px;
    }

    .auth-form-side {
        flex: none;
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .auth-card {
        margin: 0;
    }
    
    .auth-body {
        padding: 24px 20px;
    }

    .auth-form-side {
        padding: 24px 16px;
    }

    .auth-visual {
        min-height: 220px;
    }

    .auth-visual-content {
        padding: 24px;
    }

    .auth-visual-content h1 {
        font-size: 1.4rem;
    }

    .auth-visual-features {
        display: none;
    }

    .auth-social {
        flex-direction: column;
    }

    .auth-header h2 {
        font-size: 1.4rem;
    }

    .auth-brand {
        margin-bottom: 28px;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
}