/* ============================================================
   LEARN PLATFORM - CLASSIC LIGHT THEME
   Aesthetic, Clean, Educational, Elegant
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&display=swap');

/* ---- Design Tokens ---- */
:root {
    /* Color Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-deep: #f8fafc; /* Softer off-white for body background */
    
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --bg-glass-hover: rgba(15, 43, 77, 0.05);
    
    --accent: #0f2b4d;         /* Deep Navy Blue (Academic/Classic) */
    --accent-rgb: 15, 43, 77;
    --accent-light: #1e4474;
    --accent-2: #c5a059;       /* Elegant Gold/Ochre */
    --accent-2-rgb: 197, 160, 89;
    --accent-warm: #d94a38;    /* Brick Red / Maroon for danger/highlights */
    
    --accent-gradient: linear-gradient(135deg, #0f2b4d 0%, #1e4474 100%);
    
    /* Typography Colors */
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-accent: #0f2b4d;
    
    /* Borders */
    --border: #e2e8f0;
    --border-glass: rgba(15, 43, 77, 0.1);
    --border-accent: rgba(197, 160, 89, 0.4);
    
    /* Utilities */
    --success: #2f855a;
    --danger: #c53030;
    --warning: #dd6b20;
    --info: #3182ce;
    
    /* Fonts */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Playfair Display', serif; /* Classic elegant serif */
    --font-display: 'Playfair Display', serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    
    /* Spacing & Sizes */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 1px 2px 0 rgba(15, 43, 77, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 43, 77, 0.05), 0 2px 4px -1px rgba(15, 43, 77, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(15, 43, 77, 0.05), 0 4px 6px -2px rgba(15, 43, 77, 0.03);
    
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --t-fast: 0.15s;
    --t-base: 0.25s;
    
    --navbar-h: 72px;
    --sidebar-w: 260px;
    --container: 1140px;
}

/* ---- Hard Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { 
    font-family: var(--font-body); 
    background: var(--bg-deep); 
    color: var(--text-primary); 
    line-height: 1.6; 
    min-height: 100vh; 
    -webkit-font-smoothing: antialiased; 
    -moz-osx-font-smoothing: grayscale; 
}

a { color: var(--accent); text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--accent-2); }
img { max-width: 100%; height: auto; display: block; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: #cbd5e0; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a0aec0; }

/* Container */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ============================================================
   NAVBAR — Classic Top Nav
   ============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--navbar-h);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 24px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
    z-index: 1010;
}
.navbar-brand .brand-icon {
    font-size: 1.5rem;
    color: var(--accent-2);
}
.navbar-brand .brand-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.5px;
}

/* Desktop nav */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    list-style: none;
}
.navbar-nav .nav-link {
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--t-fast) var(--ease);
    display: flex;
    align-items: center;
    gap: 8px;
}
.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
    color: var(--accent);
    background: var(--bg-deep);
}
.navbar-nav .nav-link.active {
    font-weight: 600;
}

.nav-btn {
    padding: 10px 24px;
    background: var(--accent);
    color: #fff !important;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--t-base) var(--ease);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.nav-btn:hover {
    background: var(--accent-light);
}

/* Hamburger */
.navbar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--accent);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
    z-index: 1010;
}

/* Page offset */
.page-content {
    padding-top: var(--navbar-h);
    min-height: 100vh;
}

/* ============================================================
   HERO — Classic, structured
   ============================================================ */
.hero {
    position: relative;
    padding: 80px 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

/* Subtle academic pattern (diagonal lines) */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(45deg, var(--border) 0, var(--border) 1px, transparent 0, transparent 50%);
    background-size: 40px 40px;
    opacity: 0.3;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-2);
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    color: var(--accent);
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--t-fast) var(--ease);
    text-decoration: none;
    line-height: 1.5;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }

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

.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text-secondary); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }

/* ============================================================
   CARDS
   ============================================================ */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--t-base) var(--ease);
}
.glass-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--border-glass);
}
.glass-card-static {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

/* ============================================================
   COURSE CARDS
   ============================================================ */
.courses-section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label { font-size: 0.85rem; color: var(--accent-2); text-transform: uppercase; letter-spacing: 2px; font-weight: 600; margin-bottom: 8px; }
.section-title { font-family: var(--font-heading); font-size: 2.5rem; color: var(--accent); margin-bottom: 16px; }
.section-desc { color: var(--text-secondary); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 32px; }
.course-card { display: flex; flex-direction: column; overflow: hidden; }
.course-card .card-thumbnail { position: relative; aspect-ratio: 16/9; background: var(--bg-tertiary); overflow: hidden; }
.course-card .card-thumbnail img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.course-card:hover .card-thumbnail img { transform: scale(1.05); }

.course-card .card-badge { position: absolute; top: 16px; left: 16px; background: rgba(255,255,255,0.9); color: var(--accent); padding: 4px 12px; border-radius: var(--radius-sm); font-size: 0.8rem; font-weight: 600; box-shadow: var(--shadow-sm); }
.course-card .card-price { position: absolute; bottom: 16px; right: 16px; background: var(--accent-2); color: #fff; padding: 6px 16px; border-radius: var(--radius-sm); font-size: 1rem; font-weight: 700; box-shadow: var(--shadow-sm); }

.course-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.course-card .card-title { font-family: var(--font-heading); font-size: 1.25rem; color: var(--accent); margin-bottom: 12px; }
.course-card .card-desc { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 20px; flex: 1; }
.course-card .card-meta { display: flex; gap: 20px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 0.85rem; color: var(--text-muted); }

/* ============================================================
   FORMS & AUTH
   ============================================================ */
.form-group { margin-bottom: 24px; }
.form-label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--text-primary); font-size: 0.95rem; }
.form-control { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-family: var(--font-body); font-size: 1rem; color: var(--text-primary); background: #fff; transition: border-color var(--t-fast); }
.form-control:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(15, 43, 77, 0.1); }
textarea.form-control { min-height: 120px; resize: vertical; }

.auth-wrapper { min-height: calc(100vh - var(--navbar-h)); display: flex; align-items: center; justify-content: center; padding: 40px 24px; }
.auth-card { width: 100%; max-width: 440px; padding: 40px; }
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-header .auth-logo { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 700; color: var(--accent); margin-bottom: 8px; }

/* ============================================================
   FLASH MESSAGES
   ============================================================ */
.flash-message { padding: 16px 20px; border-radius: var(--radius-sm); margin-bottom: 24px; display: flex; align-items: center; gap: 12px; font-weight: 500; }
.flash-message i { font-size: 1.2rem; }

/* ============================================================
   TABLES & MISC
   ============================================================ */
.data-table-wrapper { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { padding: 16px; text-align: left; background: var(--bg-deep); color: var(--text-muted); font-weight: 600; font-size: 0.85rem; border-bottom: 1px solid var(--border); }
.data-table td { padding: 16px; border-bottom: 1px solid var(--border); color: var(--text-primary); }
.data-table tbody tr:hover { background: var(--bg-deep); }
.badge { display: inline-block; padding: 4px 12px; border-radius: 50px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; }
.badge-success { background: #e6fffa; color: #234e52; border: 1px solid #b2f5ea; }
.badge-warning { background: #fffaf0; color: #7b341e; border: 1px solid #feebc8; }
.badge-danger { background: #fff5f5; color: #742a2a; border: 1px solid #fed7d7; }
.badge-info { background: #ebf8ff; color: #2c5282; border: 1px solid #bee3f8; }

/* ============================================================
   LAYOUTS (Dashboard & Player)
   ============================================================ */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; margin-bottom: 36px; }
.stat-card { display: flex; align-items: center; gap: 20px; padding: 24px; background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.stat-icon { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; flex-shrink: 0; }
.stat-icon.purple { background: #eff6ff; color: #2563eb; }
.stat-icon.orange { background: #fff7ed; color: #ea580c; }
.stat-icon.teal { background: #f0fdf4; color: #16a34a; }
.stat-icon.red { background: #fef2f2; color: #dc2626; }
.stat-info h3 { font-family: var(--font-body); font-size: 1.8rem; font-weight: 800; margin-bottom: 2px; color: var(--accent); line-height: 1.2; }
.stat-info p { font-size: 0.85rem; color: var(--text-muted); font-weight: 600; }
/* Course Player Layout */
.course-player-layout { 
    display: grid; 
    grid-template-columns: 300px 1fr; 
    min-height: calc(100vh - var(--navbar-h) - 65px); 
    position: relative;
    background: var(--bg-deep);
}
.course-sidebar { 
    background: var(--bg-primary); 
    border-right: 1px solid var(--border); 
    overflow-y: auto; 
    height: calc(100vh - var(--navbar-h) - 65px); 
    position: sticky; 
    top: calc(var(--navbar-h) + 65px); 
    z-index: 90;
}
.course-sidebar-header { padding: 20px; border-bottom: 1px solid var(--border); background: var(--bg-secondary); }
.content-item { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--border); color: var(--text-primary); text-decoration: none; transition: background var(--t-fast); }
.content-item:hover { background: var(--bg-secondary); }
.content-item.active { background: #eff6ff; border-left: 4px solid var(--accent); }
.course-main { padding: 32px 40px; background: var(--bg-deep); width: 100%; min-width: 0; }
.video-container, .audio-container, .pdf-container, .text-content { background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border); }

/* Floating Notes Drawer Button & Modal */
.floating-notes-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    background: var(--accent);
    color: #ffffff;
    border: none;
    border-radius: 50px;
    padding: 14px 24px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(15, 43, 77, 0.25);
    cursor: pointer;
    z-index: 990;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all var(--t-base) var(--ease);
}
.floating-notes-btn:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(15, 43, 77, 0.35);
}
.notes-drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 43, 77, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: all var(--t-base) var(--ease);
}
.notes-drawer-overlay.open {
    opacity: 1;
    visibility: visible;
}
.notes-drawer {
    position: fixed;
    top: 0;
    right: -450px;
    bottom: 0;
    width: 440px;
    max-width: 100vw;
    background: #ffffff;
    box-shadow: -10px 0 30px rgba(0,0,0,0.15);
    z-index: 1051;
    transition: right var(--t-base) var(--ease);
    display: flex;
    flex-direction: column;
}
.notes-drawer-overlay.open .notes-drawer {
    right: 0;
}
.notes-drawer-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
}
.notes-drawer-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Dashboard Tabs */
.dashboard-tabs { display: flex; border-bottom: 2px solid var(--border); margin-bottom: 32px; overflow-x: auto; }
.dashboard-tab { padding: 16px 24px; font-weight: 600; color: var(--text-muted); background: none; border: none; cursor: pointer; margin-bottom: -2px; border-bottom: 2px solid transparent; }
.dashboard-tab:hover { color: var(--accent); }
.dashboard-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Course details hero */
.course-detail-hero { padding: 60px 0; background: var(--bg-primary); border-bottom: 1px solid var(--border); }
.course-detail-grid { display: grid; grid-template-columns: 1fr 380px; gap: 48px; }
.course-enroll-card { position: sticky; top: calc(var(--navbar-h) + 32px); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--accent); color: #fff; padding: 64px 0 24px; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .brand-name { font-family: var(--font-heading); font-size: 2rem; margin-bottom: 16px; color: var(--accent-2); }
.footer-brand p { color: #cbd5e0; line-height: 1.8; }
.footer-links h4 { font-family: var(--font-heading); font-size: 1.1rem; margin-bottom: 20px; color: #fff; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #cbd5e0; }
.footer-links a:hover { color: var(--accent-2); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; color: #a0aec0; font-size: 0.9rem; }

/* ============================================================
   MOBILE RESPONSIVENESS (Proper Drawer Nav)
   ============================================================ */
@media(max-width: 1024px) {
    .course-player-layout { grid-template-columns: 260px 1fr; }
    .course-detail-grid { grid-template-columns: 1fr 320px; }
}

@media(max-width: 992px) {
    .navbar-toggle { 
        display: flex !important; 
        align-items: center; 
        justify-content: center; 
        margin-left: auto; 
        width: 44px; 
        height: 44px; 
        border-radius: var(--radius-sm); 
        background: var(--bg-secondary); 
        border: 1px solid var(--border); 
        color: var(--accent);
        font-size: 1.2rem; 
        cursor: pointer; 
        z-index: 1010; 
    }
    
    /* Sliding Drawer Navigation */
    .navbar-nav {
        position: fixed;
        top: var(--navbar-h);
        right: -100%;
        bottom: 0;
        width: 280px;
        background: #ffffff !important;
        border-left: 1px solid var(--border);
        flex-direction: column;
        align-items: stretch;
        padding: 24px;
        transition: right var(--t-base) var(--ease);
        margin: 0;
        box-shadow: -10px 0 30px rgba(15, 43, 77, 0.15);
        z-index: 1005;
        display: flex !important;
        gap: 12px;
    }
    
    .navbar-nav.open { right: 0 !important; }
    .navbar-nav .nav-link { padding: 12px 16px; font-size: 1.05rem; justify-content: flex-start; border-radius: var(--radius-sm); }
    .nav-btn { width: 100%; justify-content: center; margin-top: 12px; }

    .hero { padding: 60px 0; }
    .hero-title { font-size: 2.5rem; }
    .course-detail-grid { grid-template-columns: 1fr; }
    .course-enroll-card { position: static; margin-top: 40px; }
    
    .course-player-layout { grid-template-columns: 1fr; }
    .course-sidebar { 
        position: fixed; 
        left: -100%; 
        top: calc(var(--navbar-h) + 60px); 
        bottom: 0;
        width: 280px; 
        z-index: 950; 
        transition: left var(--t-base) var(--ease); 
        box-shadow: 4px 0 20px rgba(0,0,0,0.1); 
        height: auto;
    }
    .course-sidebar.open { left: 0 !important; }
    .course-main { padding: 20px 16px 80px 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media(max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
}

/* Keyframe Micro Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in-up {
    animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ------------------------------------------------------------
 * 3D CREATIVE PAGE COMPONENTS (Neat, Clean & Professional)
 * ------------------------------------------------------------ */
/* 1. Checkout / Enroll: 3D Secure Shield & Lock */
.shield-3d-wrapper {
    width: 76px;
    height: 76px;
    margin: 0 auto 16px auto;
    perspective: 800px;
}
.shield-3d {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: floatShield 4s ease-in-out infinite;
}
.shield-body {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f2b4d 0%, #1e3a8a 100%);
    clip-path: polygon(50% 0%, 100% 20%, 100% 75%, 50% 100%, 0% 75%, 0% 20%);
    box-shadow: 0 12px 28px rgba(15, 43, 77, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-2);
    font-size: 2.2rem;
}
@keyframes floatShield {
    0%, 100% { transform: rotateY(-12deg) rotateX(10deg) translateY(0); }
    50% { transform: rotateY(12deg) rotateX(-6deg) translateY(-8px); }
}

/* 2. Course Details: 3D Academic Mortarboard & Scroll */
.cap-3d-wrapper {
    width: 90px;
    height: 70px;
    margin: 0 auto 16px auto;
    perspective: 800px;
}
.cap-3d {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: floatCap 4.5s ease-in-out infinite;
}
.cap-top {
    position: absolute;
    top: 0;
    left: 10%;
    width: 80%;
    height: 44px;
    background: var(--accent);
    transform: rotateX(60deg) rotateZ(45deg);
    border-radius: 4px;
    box-shadow: 0 10px 22px rgba(15, 43, 77, 0.35);
}
.cap-tassel {
    position: absolute;
    top: 15px;
    right: 20px;
    width: 3px;
    height: 28px;
    background: var(--accent-2);
    transform-origin: top center;
    animation: swingTassel 2s ease-in-out infinite alternate;
}
@keyframes floatCap {
    0%, 100% { transform: rotateY(-15deg) translateY(0); }
    50% { transform: rotateY(15deg) translateY(-6px); }
}
@keyframes swingTassel {
    from { transform: rotateZ(-12deg); }
    to { transform: rotateZ(12deg); }
}

/* 3. Dashboard: 3D Orbiting Progress Ring */
.dashboard-3d-wrapper {
    width: 64px;
    height: 64px;
    perspective: 800px;
    position: relative;
    flex-shrink: 0;
}
.orbit-ring {
    position: absolute;
    inset: 0;
    border: 3px solid var(--accent-2);
    border-radius: 50%;
    transform: rotateX(65deg) rotateY(15deg);
    animation: orbitRotate 6s linear infinite;
}
.orbit-core {
    position: absolute;
    inset: 10px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-2);
    font-size: 1.2rem;
    box-shadow: 0 8px 20px rgba(15, 43, 77, 0.25);
}
@keyframes orbitRotate {
    0% { transform: rotateX(65deg) rotateZ(0deg); }
    100% { transform: rotateX(65deg) rotateZ(360deg); }
}

/* Modals & Celebratory Overlay */
.modal-overlay { position: fixed; inset: 0; background: rgba(15, 43, 77, 0.75); backdrop-filter: blur(6px); z-index: 9999; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all var(--t-base); padding: 20px; }
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-box { background: #ffffff; border-radius: var(--radius-lg); padding: 36px; max-width: 480px; width: 100%; transform: scale(0.92); transition: transform var(--t-base); box-shadow: 0 20px 40px rgba(0,0,0,0.2); text-align: center; border: 1px solid var(--border); }
.modal-overlay.active .modal-box { transform: scale(1); }
.modal-header { display: flex; justify-content: space-between; margin-bottom: 20px; border-bottom: 1px solid var(--border); padding-bottom: 14px; }
.modal-header h3 { font-family: var(--font-heading); color: var(--accent); font-size: 1.3rem; }

/* ============================================================
   SECURE CUSTOM YOUTUBE PLAYER CONTROLS
   ============================================================ */
.custom-yt-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000000;
    border-radius: var(--radius-md);
    overflow: hidden;
    user-select: none;
    box-shadow: var(--shadow-md);
}

.custom-yt-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    pointer-events: none; /* Block all direct user interaction on the YouTube frame */
    z-index: 1;
    transform: scale(1.01); /* Minor scale up to avoid any iframe edge line rendering */
}

/* Click interceptor overlay */
#yt-click-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    cursor: pointer;
    background: transparent;
}

/* Controls Bar Overlay */
.yt-controls-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 20;
    background: linear-gradient(to top, rgba(15, 43, 77, 0.95) 0%, rgba(15, 43, 77, 0.6) 70%, transparent 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px 20px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transform: translateY(0);
    opacity: 1;
    transition: transform var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}

/* Auto-hide controls when user is idle */
.custom-yt-wrapper.controls-hidden .yt-controls-bar {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

/* Seekbar Styling */
.yt-seekbar-container {
    position: relative;
    width: 100%;
    height: 6px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: height var(--t-fast) var(--ease);
}

.yt-seekbar-container:hover {
    height: 8px;
}

.yt-seekbar-container input[type="range"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 5;
    margin: 0;
}

.yt-seekbar-progress {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--accent-2); /* Gold accent */
    width: 0%;
    z-index: 2;
    pointer-events: none;
    border-radius: 4px;
}

.yt-seekbar-container::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.15);
    z-index: 1;
    border-radius: 4px;
}

/* Custom range thumb indicator */
.yt-seekbar-container::after {
    content: '';
    position: absolute;
    left: var(--progress-pct, 0%);
    width: 14px;
    height: 14px;
    background: var(--accent-2);
    border: 2px solid #ffffff;
    border-radius: 50%;
    transform: translate(-50%, -25%);
    opacity: 0;
    z-index: 3;
    transition: opacity var(--t-fast) var(--ease);
    pointer-events: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.yt-seekbar-container:hover::after {
    opacity: 1;
}

/* Controls Buttons Row */
.yt-controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.yt-controls-group-left, .yt-controls-group-right {
    display: flex;
    align-items: center;
    gap: 18px;
}

.yt-control-btn {
    background: none;
    border: none;
    color: #ffffff;
    font-size: 1.05rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.yt-control-btn:hover {
    color: var(--accent-2);
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.yt-control-btn:active {
    transform: scale(0.95);
}

/* Time Display */
.yt-time-display {
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    gap: 6px;
    align-items: center;
    letter-spacing: 0.5px;
}

.yt-time-divider {
    color: rgba(255, 255, 255, 0.4);
}

/* Volume Slider Container */
.yt-volume-container {
    display: flex;
    align-items: center;
    gap: 4px;
}

.yt-volume-container input[type="range"] {
    width: 0;
    height: 4px;
    opacity: 0;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 4px;
    transition: width var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
    accent-color: var(--accent-2);
}

.yt-volume-container:hover input[type="range"],
.yt-volume-container input[type="range"]:focus {
    width: 80px;
    opacity: 1;
}

/* Speed Control Container & Dropdown */
.yt-speed-container {
    position: relative;
}

.yt-dropdown-menu {
    position: absolute;
    bottom: calc(100% + 12px);
    right: 0;
    background: rgba(15, 43, 77, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    display: flex;
    flex-direction: column;
    min-width: 100px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease), visibility var(--t-fast);
    z-index: 30;
}

.yt-dropdown-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.yt-dropdown-item {
    color: #ffffff;
    padding: 8px 16px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.yt-dropdown-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--accent-2);
}

.yt-dropdown-item.active {
    color: var(--accent-2);
    font-weight: 700;
    background: rgba(197, 160, 89, 0.1);
}

/* Fullscreen Overrides */
.custom-yt-wrapper:fullscreen {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
    aspect-ratio: auto;
}

.custom-yt-wrapper:fullscreen iframe {
    transform: scale(1.0);
}

.custom-yt-wrapper:fullscreen .yt-controls-bar {
    padding: 16px 32px 24px;
}

.custom-yt-wrapper:-webkit-full-screen {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
    aspect-ratio: auto;
}

.custom-yt-wrapper:-webkit-full-screen .yt-controls-bar {
    padding: 16px 32px 24px;
}