/* ========== AImartva.ge — Main Stylesheet ========== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Georgian:wght@400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ===== Variables ===== */
:root {
    --bg: #fafbfe;
    --bg-secondary: #f0f4f8;
    --bg-card: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #555770;
    --text-muted: #8e90a6;
    --accent: #2563eb;
    --accent-glow: rgba(37,99,235,0.08);
    --accent-orange: #f97316;
    --accent-green: #10b981;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-red: #ef4444;
    --border: rgba(0,0,0,0.06);
    --border-strong: rgba(0,0,0,0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 20px;
    --radius-full: 50px;
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    --font-geo: 'Noto Sans Georgian', sans-serif;
    --font-en: 'Outfit', sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg: #0a0a1a;
    --bg-secondary: #111128;
    --bg-card: #16163a;
    --text: #e8e8f0;
    --text-secondary: #a0a0c0;
    --text-muted: #6b6b8d;
    --accent-glow: rgba(37,99,235,0.15);
    --border: rgba(255,255,255,0.06);
    --border-strong: rgba(255,255,255,0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.5);
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-geo); background: var(--bg); color: var(--text); line-height: 1.7; transition: background var(--transition), color var(--transition); }
a { text-decoration: none; color: inherit; transition: all var(--transition); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

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

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 16px 0; transition: all var(--transition); background: transparent; }
.header.scrolled { background: rgba(250,251,254,0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); box-shadow: var(--shadow-sm); padding: 10px 0; }
[data-theme="dark"] .header.scrolled { background: rgba(10,10,26,0.85); }
.header-inner { display: flex; align-items: center; justify-content: space-between; }

/* Logo */
.logo-link { display: flex; align-items: center; gap: 14px; }
.logo-img { height: 70px; width: auto; object-fit: contain; transition: transform var(--transition); }
.logo-link:hover .logo-img { transform: scale(1.05); }
.logo-text { font-family: var(--font-en); font-size: 1.7rem; font-weight: 800; letter-spacing: -0.5px; color: var(--text); }
.logo-highlight { background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* Nav */
.nav { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 0.92rem; font-weight: 500; color: var(--text-secondary); position: relative; }
.nav-link:hover { color: var(--accent); }
.nav-link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--accent); border-radius: 2px; transition: width var(--transition); }
.nav-link:hover::after { width: 100%; }

/* Header Actions */
.header-actions { display: flex; align-items: center; gap: 12px; }
.theme-toggle { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border-strong); background: var(--bg-card); display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-secondary); transition: all var(--transition); }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-icon.moon { display: none; }
[data-theme="dark"] .theme-icon.sun { display: none; }
[data-theme="dark"] .theme-icon.moon { display: block; }
.btn-header { padding: 10px 24px; border-radius: var(--radius-full); background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; font-size: 0.9rem; font-weight: 600; border: none; cursor: pointer; box-shadow: 0 4px 15px rgba(37,99,235,0.3); }
.btn-header:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.4); }
.btn-header-outline { padding: 10px 24px; border-radius: var(--radius-full); background: transparent; color: var(--text); font-size: 0.9rem; font-weight: 600; border: 1px solid var(--border-strong); cursor: pointer; transition: all var(--transition); }
.btn-header-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-header-profile { display: flex; align-items: center; gap: 8px; padding: 8px 20px; border-radius: var(--radius-full); background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; font-size: 0.88rem; font-weight: 600; transition: all var(--transition); }
.btn-header-profile:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(37,99,235,0.4); }
.mobile-menu-btn { display: none; width: 40px; height: 40px; border: none; background: none; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.mobile-menu-btn span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding-top: 100px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('../images/hero-bg.png') center/cover no-repeat; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to right, rgba(10,10,26,0.88) 0%, rgba(10,10,26,0.65) 30%, rgba(10,10,26,0.15) 50%, transparent 60%); }
[data-theme="dark"] .hero-overlay { background: linear-gradient(to right, rgba(10,10,26,0.88) 0%, rgba(10,10,26,0.65) 30%, rgba(10,10,26,0.15) 50%, transparent 60%); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content { padding: 40px 0; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: var(--radius-full); background: rgba(37,99,235,0.2); color: #a5c4ff; font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; border: 1px solid rgba(37,99,235,0.3); backdrop-filter: blur(8px); }
.hero-title { font-size: 3.2rem; font-weight: 900; line-height: 1.15; margin-bottom: 20px; color: #fff; }
.hero-title .highlight { background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 1.1rem; color: rgba(255,255,255,0.8); line-height: 1.8; margin-bottom: 36px; max-width: 480px; }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 30px; border-radius: var(--radius-full); font-size: 0.95rem; font-weight: 600; border: none; cursor: pointer; transition: all var(--transition); font-family: var(--font-geo); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; box-shadow: 0 4px 20px rgba(37,99,235,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(37,99,235,0.4); }
.btn-outline { background: var(--bg-card); color: var(--text); border: 1px solid var(--border-strong); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 18px 40px; font-size: 1.05rem; }

/* ===== Chat Preview — HORIZONTAL + BOTTOM ===== */
.hero-visual { position: relative; margin-top: 220px; }
.chat-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 14px 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.chat-preview:hover { transform: none; }
.chat-header-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 10px;
}
.chat-avatar { width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 0.65rem; }
.chat-name { font-weight: 700; font-size: 0.8rem; color: #fff; }
.chat-status-dot { font-size: 0.75rem; color: var(--accent-green); }
.chat-status-dot::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-green); margin-right: 6px; }
.chat-messages { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.chat-msg {
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 0.78rem;
    line-height: 1.4;
    max-width: 100%;
    animation: fadeInMsg 0.5s ease forwards;
    opacity: 0;
}
.chat-msg.ai {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    color: #fff;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}
.chat-msg.user {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    color: #1a1a2e;
    font-weight: 500;
}
.chat-msg:nth-child(1) { animation-delay: 0.3s; }
.chat-msg:nth-child(2) { animation-delay: 0.8s; }
.chat-msg:nth-child(3) { animation-delay: 1.3s; }
.chat-msg:nth-child(4) { animation-delay: 1.8s; }
@keyframes fadeInMsg { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Stats ===== */
.stats { padding: 60px 0; background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%); border: none; position: relative; overflow: hidden; }
.stats::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(37,99,235,0.15) 1px, transparent 1px); background-size: 30px 30px; }
.stats .stat-card { position: relative; z-index: 1; }
.stats .stat-label { color: rgba(255,255,255,0.6); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { text-align: center; padding: 24px; }
.stat-number { font-family: var(--font-en); font-size: 2.8rem; font-weight: 900; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 4px; }

/* ===== Section Common ===== */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag { display: inline-block; padding: 6px 16px; border-radius: var(--radius-full); background: var(--accent-glow); color: var(--accent); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.section-title { font-size: 2.5rem; font-weight: 900; line-height: 1.2; }
.section-title .highlight { background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-desc { font-size: 1.05rem; color: var(--text-secondary); max-width: 500px; margin: 16px auto 0; }

/* ===== Features ===== */
.features { padding: 100px 0; position: relative; overflow: hidden; background: linear-gradient(135deg, #eef2ff 0%, #f0f4ff 30%, #faf5ff 60%, #fef3f2 100%); }
[data-theme="dark"] .features { background: linear-gradient(135deg, #0f1029 0%, #131335 30%, #1a1040 60%, #0f1029 100%); }
.features::before { content: ''; position: absolute; top: -200px; right: -200px; width: 500px; height: 500px; background: radial-gradient(circle, rgba(37,99,235,0.1) 0%, transparent 70%); border-radius: 50%; }
.features::after { content: ''; position: absolute; bottom: -200px; left: -200px; width: 500px; height: 500px; background: radial-gradient(circle, rgba(139,92,246,0.1) 0%, transparent 70%); border-radius: 50%; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: all var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37,99,235,0.2); }
.feature-icon { width: 56px; height: 56px; border-radius: 14px; background: var(--accent-glow); color: var(--accent); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.feature-icon.accent-orange { background: rgba(249,115,22,0.1); color: var(--accent-orange); }
.feature-icon.accent-green { background: rgba(16,185,129,0.1); color: var(--accent-green); }
.feature-icon.accent-purple { background: rgba(139,92,246,0.1); color: var(--accent-purple); }
.feature-icon.accent-cyan { background: rgba(6,182,212,0.1); color: var(--accent-cyan); }
.feature-icon.accent-red { background: rgba(239,68,68,0.1); color: var(--accent-red); }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* ===== How It Works ===== */
.how-it-works { padding: 0; position: relative; overflow: hidden; background: var(--bg); }
.how-it-works-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.how-it-works-image { position: relative; background: url('../images/how-bg.png') center/cover no-repeat; min-height: 650px; }
.how-it-works-content { display: flex; flex-direction: column; justify-content: center; padding: 50px 40px; }

/* Timeline */
.timeline-container { position: relative; }
.timeline-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.timeline-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 12px; text-align: center; transition: all var(--transition); }
.timeline-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.timeline-item.empty { background: transparent; border: none; }
.timeline-item h4 { font-size: 0.85rem; font-weight: 700; margin-top: 8px; margin-bottom: 2px; }
.timeline-item p { font-size: 0.72rem; color: var(--text-muted); line-height: 1.4; }
.timeline-num { font-family: var(--font-en); font-size: 1.2rem; font-weight: 900; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; display: block; margin-bottom: 4px; }
.timeline-icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin: 0 auto 6px; }
.timeline-icon.blue { background: rgba(37,99,235,0.1); color: var(--accent); }
.timeline-icon.cyan { background: rgba(6,182,212,0.1); color: var(--accent-cyan); }
.timeline-icon.green { background: rgba(16,185,129,0.1); color: var(--accent-green); }
.timeline-icon.purple { background: rgba(139,92,246,0.1); color: var(--accent-purple); }
.timeline-icon.orange { background: rgba(249,115,22,0.1); color: var(--accent-orange); }
.timeline-icon.red { background: rgba(239,68,68,0.1); color: var(--accent-red); }

/* Timeline Line */
.timeline-line { display: flex; align-items: center; justify-content: center; gap: 0; padding: 14px 0; position: relative; }
.timeline-line::before { content: ''; position: absolute; left: 10%; right: 10%; height: 2px; background: linear-gradient(90deg, var(--accent-cyan), var(--accent), var(--accent-cyan)); opacity: 0.3; }
.timeline-arrow { font-size: 1.4rem; color: var(--accent-cyan); font-weight: 300; position: relative; z-index: 1; }
.timeline-arrow.left { margin-right: auto; margin-left: 10%; }
.timeline-arrow.right { margin-left: auto; margin-right: 10%; }
.timeline-center-dot { width: 36px; height: 36px; border-radius: 50%; background: var(--bg-card); border: 2px solid var(--accent-cyan); display: flex; align-items: center; justify-content: center; color: var(--accent-cyan); position: relative; z-index: 1; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; text-align: center; position: relative; transition: all var(--transition); }
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-num { font-family: var(--font-en); font-size: 3rem; font-weight: 900; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 16px; }
.step-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 0.88rem; color: var(--text-secondary); }

/* ===== AI Teacher ===== */
.ai-teacher { padding: 100px 0; position: relative; overflow: hidden; background: var(--bg); }
.ai-teacher::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 800px; height: 800px; background: conic-gradient(from 0deg, rgba(37,99,235,0.04), rgba(139,92,246,0.04), rgba(249,115,22,0.04), rgba(16,185,129,0.04), rgba(37,99,235,0.04)); border-radius: 50%; animation: spinSlow 30s linear infinite; }
@keyframes spinSlow { from { transform: translate(-50%, -50%) rotate(0deg); } to { transform: translate(-50%, -50%) rotate(360deg); } }
.teachers-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.teacher-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 16px; text-align: center; cursor: pointer; transition: all var(--transition); }
.teacher-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37,99,235,0.3); }
.teacher-avatar { width: 72px; height: 72px; border-radius: 50%; background: var(--accent-glow); color: var(--accent); display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; border: 2px solid rgba(37,99,235,0.15); }
.teacher-avatar.accent-orange { background: rgba(249,115,22,0.1); color: var(--accent-orange); border-color: rgba(249,115,22,0.15); }
.teacher-avatar.accent-green { background: rgba(16,185,129,0.1); color: var(--accent-green); border-color: rgba(16,185,129,0.15); }
.teacher-avatar.accent-purple { background: rgba(139,92,246,0.1); color: var(--accent-purple); border-color: rgba(139,92,246,0.15); }
.teacher-avatar.accent-cyan { background: rgba(6,182,212,0.1); color: var(--accent-cyan); border-color: rgba(6,182,212,0.15); }
.teacher-avatar.accent-red { background: rgba(239,68,68,0.1); color: var(--accent-red); border-color: rgba(239,68,68,0.15); }
.teacher-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.teacher-card p { font-size: 0.8rem; color: var(--text-muted); }

/* ===== Pricing ===== */
.pricing { padding: 100px 0; background: linear-gradient(135deg, #0f172a 0%, #1a1a3e 50%, #0f172a 100%); position: relative; overflow: hidden; }
.pricing::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-purple), var(--accent-orange), var(--accent-green), var(--accent)); background-size: 300% 100%; animation: rainbowSlide 6s linear infinite; }
@keyframes rainbowSlide { 0% { background-position: 0% 50%; } 100% { background-position: 300% 50%; } }
.pricing .section-tag { background: rgba(37,99,235,0.2); color: #a5c4ff; }
.pricing .section-title { color: #fff; }
.pricing .price-card { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.08); }
.pricing .price-card:hover { background: rgba(255,255,255,0.08); }
.pricing .price-card.featured { background: rgba(37,99,235,0.1); border-color: var(--accent); }
.pricing .price-name { color: #fff; }
.pricing .price-amount { color: #fff; }
.pricing .price-amount span { color: rgba(255,255,255,0.5); }
.pricing .price-period { color: rgba(255,255,255,0.4); }
.pricing .price-features li { color: rgba(255,255,255,0.7); }
.pricing .price-badge { box-shadow: 0 4px 15px rgba(37,99,235,0.4); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.price-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px; position: relative; transition: all var(--transition); }
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.price-card.featured { border-color: var(--accent); box-shadow: 0 8px 40px rgba(37,99,235,0.15); transform: scale(1.05); }
.price-card.featured:hover { transform: scale(1.05) translateY(-6px); }
.price-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); padding: 6px 20px; border-radius: var(--radius-full); background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; font-size: 0.78rem; font-weight: 700; }
.price-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
.price-amount { font-family: var(--font-en); font-size: 3rem; font-weight: 900; line-height: 1; margin-bottom: 4px; }
.price-amount span { font-size: 1rem; font-weight: 500; color: var(--text-secondary); }
.price-period { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 28px; }
.price-features { margin-bottom: 28px; }
.price-features li { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: 0.9rem; color: var(--text-secondary); }
.price-features li svg { color: var(--accent-green); flex-shrink: 0; }
.price-btn { width: 100%; justify-content: center; }

/* ===== FAQ ===== */
.faq { padding: 100px 0; position: relative; overflow: hidden; background: var(--bg); }
.faq::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 600px; height: 600px; background: radial-gradient(circle, rgba(37,99,235,0.05) 0%, transparent 70%); border-radius: 50%; }
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; background: var(--bg-card); }
.faq-question { width: 100%; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; background: none; border: none; cursor: pointer; font-family: var(--font-geo); font-size: 1rem; font-weight: 600; color: var(--text); text-align: left; }
.faq-question svg { transition: transform var(--transition); flex-shrink: 0; color: var(--text-muted); }
.faq-item.open .faq-question svg { transform: rotate(45deg); color: var(--accent); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; }
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }
.faq-answer p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.8; }

/* ===== CTA ===== */
.cta { padding: 100px 0; position: relative; overflow: hidden; background: linear-gradient(180deg, var(--bg) 0%, #e8eef5 100%); }
[data-theme="dark"] .cta { background: linear-gradient(180deg, var(--bg) 0%, #111128 100%); }
.cta-box { text-align: center; padding: 64px 40px; border-radius: var(--radius-lg); background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; position: relative; overflow: hidden; }
.cta-box::before { content: ''; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; background: rgba(255,255,255,0.08); border-radius: 50%; }
.cta-box h2 { font-size: 2.2rem; font-weight: 900; margin-bottom: 14px; position: relative; }
.cta-box p { font-size: 1.05rem; opacity: 0.9; margin-bottom: 32px; position: relative; }
.cta-box .btn-primary { background: #fff; color: var(--accent); box-shadow: 0 4px 20px rgba(0,0,0,0.15); position: relative; }
.cta-box .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.2); }

/* ===== Quiz Demo ===== */
.quiz-demo { padding: 100px 0; position: relative; overflow: hidden; background: linear-gradient(135deg, #0f172a 0%, #1a1040 50%, #0f172a 100%); }
.quiz-demo .section-tag { background: rgba(249,115,22,0.2); color: #fbbf24; }
.quiz-demo .section-title { color: #fff; }
.quiz-card { max-width: 650px; margin: 0 auto; background: rgba(255,255,255,0.06); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg); padding: 36px; position: relative; }
.quiz-progress { height: 4px; background: rgba(255,255,255,0.1); border-radius: 4px; margin-bottom: 20px; overflow: hidden; }
.quiz-progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-purple)); border-radius: 4px; transition: width 0.5s ease; }
.quiz-question-num { font-size: 0.8rem; color: rgba(255,255,255,0.4); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; }
.quiz-question { color: #fff; font-size: 1.3rem; font-weight: 700; margin-bottom: 20px; line-height: 1.5; }
.quiz-image { text-align: center; margin-bottom: 20px; }
.quiz-options { display: flex; flex-direction: column; gap: 10px; }
.quiz-option { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-radius: var(--radius); background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); cursor: pointer; color: rgba(255,255,255,0.85); font-size: 0.95rem; font-family: var(--font-geo); text-align: left; transition: all var(--transition); }
.quiz-option:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); transform: translateX(4px); }
.quiz-option.correct { background: rgba(16,185,129,0.2); border-color: var(--accent-green); color: #fff; }
.quiz-option.wrong { background: rgba(239,68,68,0.2); border-color: var(--accent-red); color: #fff; }
.quiz-option.disabled { pointer-events: none; opacity: 0.5; }
.quiz-option-letter { width: 32px; height: 32px; border-radius: 8px; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; flex-shrink: 0; }
.quiz-result { text-align: center; padding: 20px 0; }
.quiz-result-icon { font-size: 3rem; margin-bottom: 12px; }
.quiz-result-text { color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.quiz-result-explain { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.6; }
.quiz-final { text-align: center; padding: 30px 0; }
.quiz-score-circle { width: 100px; height: 100px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; font-weight: 900; color: #fff; font-family: var(--font-en); }
.quiz-final h3 { color: #fff; font-size: 1.4rem; margin-bottom: 8px; }
.quiz-final p { color: rgba(255,255,255,0.6); font-size: 0.95rem; }

/* ===== Floating Chatbot ===== */
.chatbot-float { position: fixed; bottom: 24px; right: 24px; z-index: 9999; }
.chatbot-toggle { width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 30px rgba(37,99,235,0.4); transition: all var(--transition); position: relative; }
.chatbot-toggle:hover { transform: scale(1.1); box-shadow: 0 12px 40px rgba(37,99,235,0.5); }
.chatbot-pulse { position: absolute; inset: -4px; border-radius: 50%; border: 2px solid var(--accent); animation: chatPulse 2s ease infinite; }
@keyframes chatPulse { 0%,100% { opacity: 0; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.2); } }
.chatbot-window { position: absolute; bottom: 72px; right: 0; width: 360px; max-height: 480px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); overflow: hidden; animation: chatOpen 0.3s ease; }
@keyframes chatOpen { from { opacity: 0; transform: translateY(10px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }
.chatbot-header { display: flex; align-items: center; gap: 12px; padding: 16px; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; }
.chatbot-header-avatar { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 0.8rem; }
.chatbot-header-name { font-weight: 700; font-size: 0.92rem; }
.chatbot-header-status { font-size: 0.72rem; opacity: 0.8; }
.chatbot-messages { padding: 16px; max-height: 300px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
.chatbot-msg { padding: 10px 14px; border-radius: 14px; font-size: 0.88rem; line-height: 1.6; max-width: 85%; animation: fadeInMsg 0.3s ease; }
.chatbot-msg.bot { background: var(--accent-glow); border: 1px solid rgba(37,99,235,0.1); align-self: flex-start; border-bottom-left-radius: 4px; }
.chatbot-msg.user { background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.chatbot-msg.typing { background: var(--accent-glow); border: 1px solid rgba(37,99,235,0.1); align-self: flex-start; border-bottom-left-radius: 4px; }
.chatbot-msg.typing::after { content: '●●●'; animation: typingDots 1s ease infinite; }
@keyframes typingDots { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }
.chatbot-quick-replies { padding: 8px 16px 16px; display: flex; gap: 6px; flex-wrap: wrap; }
.chatbot-quick-replies button { padding: 6px 14px; border-radius: var(--radius-full); background: var(--accent-glow); color: var(--accent); border: 1px solid rgba(37,99,235,0.15); font-size: 0.78rem; font-weight: 600; cursor: pointer; font-family: var(--font-geo); transition: all var(--transition); }
.chatbot-quick-replies button:hover { background: var(--accent); color: #fff; }

/* Chatbot Input */
.chatbot-input-area { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); background: var(--bg-card); }
.chatbot-input-area input { flex: 1; padding: 10px 14px; border-radius: var(--radius-full); border: 1px solid var(--border-strong); background: var(--bg); color: var(--text); font-family: var(--font-geo); font-size: 0.88rem; outline: none; transition: border var(--transition); }
.chatbot-input-area input:focus { border-color: var(--accent); }
.chatbot-send-btn { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all var(--transition); flex-shrink: 0; }
.chatbot-send-btn:hover { transform: scale(1.1); }

/* ===== Footer ===== */
.footer { padding: 60px 0 30px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); border-top: none; color: #fff; }
.footer .footer-desc { color: rgba(255,255,255,0.6); }
.footer .footer-col h4 { color: #fff; }
.footer .footer-col a { color: rgba(255,255,255,0.5); }
.footer .footer-col a:hover { color: var(--accent); }
.footer .footer-socials a { border-color: rgba(255,255,255,0.15); color: rgba(255,255,255,0.5); }
.footer .footer-socials a:hover { border-color: var(--accent); color: var(--accent); background: rgba(37,99,235,0.15); }
.footer .footer-bottom { border-top-color: rgba(255,255,255,0.08); color: rgba(255,255,255,0.35); }
.footer .footer-team { color: rgba(255,255,255,0.5); }
.footer .logo-text { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo .logo-img { height: 50px; }
.footer-desc { font-size: 0.88rem; color: var(--text-secondary); margin-top: 14px; line-height: 1.7; max-width: 280px; }
.footer-socials { display: flex; gap: 12px; margin-top: 20px; }
.footer-socials a { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border-strong); display: flex; align-items: center; justify-content: center; color: var(--text-secondary); }
.footer-socials a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.footer-col h4 { font-size: 0.92rem; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 0.88rem; color: var(--text-secondary); padding: 4px 0; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 24px; border-top: 1px solid var(--border); font-size: 0.82rem; color: var(--text-muted); }
.footer-team { font-weight: 600; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-content { padding: 20px 0; }
    .hero-subtitle { margin: 0 auto 36px; }
    .hero-buttons { justify-content: center; }
    .hero-visual { max-width: 450px; margin: 0 auto; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .how-it-works-wrapper { grid-template-columns: 1fr; }
    .how-it-works-image { min-height: 300px; }
    .timeline-row { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .teachers-grid { grid-template-columns: repeat(3, 1fr); }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .price-card.featured { transform: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--bg); flex-direction: column; align-items: center; justify-content: center; gap: 28px; z-index: 999; }
    .nav.open { display: flex; }
    .nav-link { font-size: 1.2rem; }
    .mobile-menu-btn { display: flex; z-index: 1001; }
    .btn-header { display: none; }
    .logo-img { height: 50px; }
    .logo-text { font-size: 1.3rem; }
    .hero-title { font-size: 2.2rem; }
    .section-title { font-size: 1.8rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .teachers-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .chatbot-window { width: calc(100vw - 32px); right: -8px; max-height: 400px; }
    .chatbot-float { bottom: 16px; right: 16px; }
    .quiz-question { font-size: 1.1rem; }
}