/* E-Learning System - Main Styles (aligned with som-ui.css tokens) */
:root {
    --primary: #28c76f;
    --primary-dark: #1fa75d;
    --secondary: #059669;
    --accent: #34d399;
    --dark: #14532d;
    --gray-100: #ebf5ff;
    --gray-200: #e2e8f0;
    --gray-500: #64748b;
    --gray-700: #334155;
    --gray-800: #1c1917;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 40px -12px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: 0.2s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif; background: var(--gray-100); color: var(--gray-800); line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column; }
.main-content { flex: 1; }
.main-footer { margin-top: auto; background: var(--gray-800); color: var(--gray-200); }
.main-footer a { color: var(--gray-300); transition: color 0.2s; }
.main-footer a:hover { color: #fff; }
.main-footer h5, .main-footer h6 { color: #fff; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.main-header { background: linear-gradient(135deg, var(--dark) 0%, #14532d 100%); color: var(--white); padding: 1rem 0; position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-lg); }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--white); }
.nav-main { display: flex; align-items: center; gap: 1.5rem; }
.nav-main a { color: rgba(255,255,255,.9); }
.nav-main a:hover { color: var(--white); }
.user-menu { position: relative; }
.user-name { cursor: pointer; padding: 0.25rem 0.5rem; }
.user-menu .dropdown { display: none; position: absolute; top: 100%; right: 0; background: var(--white); color: var(--gray-800); padding: 0.5rem; border-radius: var(--radius); box-shadow: var(--shadow-lg); min-width: 120px; margin-top: 4px; }
.user-menu:hover .dropdown { display: block; }
.user-menu .dropdown a { color: var(--gray-800); display: block; padding: 0.5rem; }
.mobile-menu-btn { display: none; background: none; border: none; color: var(--white); font-size: 1.5rem; cursor: pointer; }

.navbar-spacer { height: 72px; }
.site-navbar { background: linear-gradient(135deg, var(--dark) 0%, #14532d 100%) !important; box-shadow: 0 4px 20px rgba(0,0,0,.15); }
.site-navbar .nav-link { color: rgba(255,255,255,.9) !important; font-weight: 500; }
.site-navbar .nav-link:hover { color: #fff !important; }
.site-navbar .navbar-brand { color: #fff !important; }
/* Site logo: circular crop, fixed size, no overlap with text */
.site-navbar .navbar-logo-wrap {
    width: 48px;
    height: 48px;
    min-width: 48px;
    flex-shrink: 0;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.site-navbar .navbar-logo-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.site-logo-circle,
.navbar-logo-img.site-logo-circle {
    width: 48px !important;
    height: 48px !important;
    min-width: 48px;
    min-height: 48px;
    max-width: 48px !important;
    max-height: 48px !important;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}
.site-navbar .dropdown-menu { border-radius: 12px; border: none; }
.site-navbar .btn-outline-light:hover { background: rgba(255,255,255,.15); color: #fff; }
.site-navbar .btn-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%); border: none; }
.site-navbar .theme-toggle-btn { color: rgba(255,255,255,.9); font-size: 1.1rem; }
.site-navbar .theme-toggle-btn:hover { color: #fff; }
.theme-icon-dark { display: none !important; }
[data-bs-theme="dark"] .theme-icon-light { display: none !important; }
[data-bs-theme="dark"] .theme-icon-dark { display: inline-block !important; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.6rem 1.25rem; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; cursor: pointer; border: none; transition: all var(--transition); }
.btn-primary { background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%); color: var(--white); box-shadow: 0 4px 14px rgba(40, 199, 111, 0.35); border: none; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(40, 199, 111, 0.45); color: var(--white); }
.btn-secondary { background: var(--secondary); color: var(--white); }
.btn-ghost { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: var(--white); }
.btn-block { width: 100%; }
.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.875rem; }
.btn-danger { background: #ef4444; color: var(--white); }
.btn-success { background: #22c55e; color: var(--white); }

/* Alerts */
.alert { padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1rem; }
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.alert-toast { position: fixed; top: 80px; right: 20px; z-index: 9999; padding: 1rem 1.5rem; border-radius: var(--radius); box-shadow: var(--shadow-lg); animation: slideIn 0.3s ease; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Auth pages */
.auth-page { min-height: calc(100vh - 200px); display: flex; align-items: center; justify-content: center; padding: 2rem; }
.auth-card { background: var(--white); padding: 2.5rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; max-width: 420px; }
.auth-card h1 { font-size: 1.75rem; margin-bottom: 0.25rem; color: var(--dark); }
.auth-subtitle { color: var(--gray-500); margin-bottom: 1.5rem; }
.auth-form .form-group { margin-bottom: 1.25rem; }
.auth-form .form-group-inline { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.auth-form .btn { margin-top: 0.5rem; }
.auth-footer { margin-top: 1.5rem; text-align: center; color: var(--gray-500); }
.auth-footer a { font-weight: 600; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.4rem; color: var(--gray-700); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.65rem 1rem; border: 1px solid var(--gray-200); border-radius: var(--radius); font-size: 1rem; transition: border-color var(--transition); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(40, 199, 111, 0.22); }
.form-group textarea { min-height: 100px; resize: vertical; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--dark) 0%, #14532d 50%, #28c76f 100%); color: var(--white); padding: 4rem 0; text-align: center; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); opacity: 0.5; }
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 1rem; font-weight: 700; }
.hero p { font-size: 1.2rem; opacity: .9; max-width: 600px; margin: 0 auto 2rem; }
.hero .btn { margin: 0 0.5rem 0.5rem; }

/* Section */
.section { padding: 3rem 0; }
.section-title { font-size: 1.75rem; margin-bottom: 1.5rem; color: var(--dark); }

/* Course cards */
.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.course-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); transition: all var(--transition); display: flex; flex-direction: column; }
.course-card:hover { transform: translateY(-4px); box-shadow: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.05); }
.course-card-image { height: 160px; background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%); position: relative; overflow: hidden; }
.course-card-image img { width: 100%; height: 100%; object-fit: cover; }
.course-card-body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; }
.course-card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--dark); line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.course-card-meta { color: var(--gray-500); font-size: 0.875rem; margin-bottom: 0.75rem; }
.course-card-price { font-size: 1.25rem; font-weight: 700; color: var(--primary); margin-top: auto; }
.course-card-actions { display: flex; gap: 0.5rem; margin-top: 0.75rem; }
.course-badge { position: absolute; top: 10px; left: 10px; background: var(--secondary); color: var(--white); padding: 0.25rem 0.6rem; border-radius: 6px; font-size: 0.75rem; font-weight: 600; }

/* Dashboard layout */
.dashboard-layout { display: flex; min-height: calc(100vh - 60px); }
.sidebar { width: 260px; background: linear-gradient(180deg, var(--dark) 0%, #14532d 100%); color: var(--white); padding: 1.5rem 0; flex-shrink: 0; }
.sidebar-nav a { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1.5rem; color: rgba(255,255,255,.85); transition: all var(--transition); }
.sidebar-nav a:hover, .sidebar-nav a.active { background: rgba(255,255,255,.1); color: var(--white); }
.sidebar-nav .nav-section { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(255,255,255,.5); padding: 1rem 1.5rem 0.5rem; }
.dashboard-content { flex: 1; padding: 2rem; overflow-x: auto; }
.dashboard-header { margin-bottom: 2rem; }
.dashboard-header h1 { font-size: 1.75rem; color: var(--dark); }

/* Stats cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.25rem; margin-bottom: 2rem; }
.stat-card { background: var(--white); padding: 1.25rem; border-radius: var(--radius); box-shadow: var(--shadow); border-left: 4px solid var(--primary); }
.stat-card h3 { font-size: 0.875rem; color: var(--gray-500); font-weight: 500; margin-bottom: 0.25rem; }
.stat-card .value { font-size: 1.75rem; font-weight: 700; color: var(--dark); }

/* Tables */
.table-wrap { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.table-wrap table { width: 100%; border-collapse: collapse; }
.table-wrap th, .table-wrap td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--gray-200); }
.table-wrap th { background: var(--gray-100); font-weight: 600; color: var(--gray-700); font-size: 0.875rem; }
.table-wrap tr:hover { background: var(--gray-100); }
.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; }
.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
.badge-info { background: #d1fae5; color: #166534; }

/* Progress bar */
.progress-bar-wrap { height: 8px; background: var(--gray-200); border-radius: 999px; overflow: hidden; }
.progress-bar-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: 999px; transition: width 0.4s ease; }
.progress-text { font-size: 0.875rem; color: var(--gray-500); margin-top: 0.25rem; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); display: flex; align-items: center; justify-content: center; z-index: 1000; padding: 1rem; opacity: 0; visibility: hidden; transition: all var(--transition); }
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal { background: var(--white); border-radius: var(--radius-lg); max-width: 500px; width: 100%; max-height: 90vh; overflow-y: auto; transform: scale(0.95); transition: transform var(--transition); }
.modal-overlay.active .modal { transform: scale(1); }
.modal-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--gray-200); font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--gray-200); display: flex; justify-content: flex-end; gap: 0.5rem; }

/* Footer */
.main-footer { background: var(--gray-800); color: var(--gray-200); padding: 3rem 0 1.5rem; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
.footer-grid h4 { color: var(--white); margin-bottom: 0.75rem; font-size: 1rem; }
.footer-grid a { color: var(--gray-200); display: block; margin-bottom: 0.4rem; }
.footer-grid a:hover { color: var(--white); }
.footer-copy { text-align: center; padding-top: 1.5rem; border-top: 1px solid var(--gray-700); font-size: 0.875rem; color: var(--gray-500); }

/* Footer social icons (non-home pages) */
.footer-social-icons { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.footer-social-link {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 10px;
    background: rgba(255,255,255,.08); color: var(--gray-200);
    transition: background 0.2s, color 0.2s, transform 0.2s;
}
.footer-social-link:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* FAQ accordion - modern styling */
.faq-page .accordion-modern .accordion-button { font-weight: 600; }
.faq-page .accordion-modern .accordion-button:not(.collapsed) { background: rgba(40,199,111,.1) !important; color: var(--primary-dark); }
.faq-page .accordion-modern .accordion-body { padding: 1.25rem 1.5rem; }

/* Search & filters */
.search-bar { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.search-bar input { flex: 1; min-width: 200px; padding: 0.65rem 1rem; border: 1px solid var(--gray-200); border-radius: var(--radius); }
.filter-select { padding: 0.65rem 1rem; border: 1px solid var(--gray-200); border-radius: var(--radius); min-width: 160px; }

/* Learning page */
.learning-layout { display: flex; min-height: calc(100vh - 60px); }
.learning-video { flex: 1; padding: 1.5rem; background: var(--gray-800); }
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; background: #000; border-radius: var(--radius); overflow: hidden; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.learning-sidebar { width: 320px; background: var(--white); border-left: 1px solid var(--gray-200); overflow-y: auto; }
.lesson-list { list-style: none; }
.lesson-list li { border-bottom: 1px solid var(--gray-200); }
.lesson-list a { display: flex; align-items: center; gap: 0.75rem; padding: 0.9rem 1rem; color: var(--gray-700); transition: background var(--transition); }
.lesson-list a:hover { background: var(--gray-100); }
.lesson-list a.active { background: rgba(40,199,111,.12); color: var(--primary); font-weight: 600; }
.lesson-list .completed { color: var(--secondary); }
.lesson-content { background: var(--white); margin-top: 1rem; padding: 1.5rem; border-radius: var(--radius); }
.lesson-nav { display: flex; justify-content: space-between; margin-top: 1.5rem; }

/* Certificate */
.certificate-box { background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%); border: 2px solid #eab308; border-radius: var(--radius-lg); padding: 2rem; text-align: center; }
.certificate-box .code { font-family: monospace; font-size: 1.25rem; letter-spacing: 0.1em; margin-top: 0.5rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav-main { display: none; }
    .mobile-menu-btn { display: block; }
    .nav-main.mobile-open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--dark); padding: 1rem; gap: 1rem; }
    .dashboard-layout { flex-direction: column; }
    .sidebar { width: 100%; }
    .learning-layout { flex-direction: column; }
    .learning-sidebar { width: 100%; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* Search results dropdown */
.search-results { padding: 0.5rem; }
.search-item { display: block; padding: 0.75rem 1rem; color: var(--gray-800); border-bottom: 1px solid var(--gray-200); }
.search-item:hover { background: var(--gray-100); }
.search-item small { color: var(--gray-500); }

/* Utility */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: 0.5rem; }
.mb-2 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.flex-wrap { flex-wrap: wrap; }