/*
==========================================================
  Object Detection Dataset - Advanced Stylesheet
==========================================================
  Website: https://rskworld.in
  Founder: Molla Samser
  Designer & Tester: Rima Khatun
  Email: help@rskworld.in
  © 2026 RSK World - All Rights Reserved
==========================================================
*/

/* CSS Variables */
:root {
    --primary-hue: 175;
    --primary: hsl(var(--primary-hue), 85%, 40%);
    --primary-light: hsl(var(--primary-hue), 85%, 55%);
    --primary-dark: hsl(var(--primary-hue), 85%, 30%);
    --primary-glow: hsla(var(--primary-hue), 85%, 50%, 0.4);
    --accent: #FF6B6B;
    --accent-light: #FF8E8E;
    --accent-glow: rgba(255, 107, 107, 0.4);
    --bg-primary: #050A15;
    --bg-secondary: #0A1220;
    --bg-tertiary: #111B2E;
    --bg-card: rgba(17, 27, 46, 0.7);
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --border-color: rgba(148, 163, 184, 0.1);
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-light));
    --shadow-glow: 0 0 40px var(--primary-glow);
    --font-primary: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-display: 'Orbitron', sans-serif;
    --header-height: 70px;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

[data-theme="light"] {
    --bg-primary: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --bg-tertiary: #E2E8F0;
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --border-color: rgba(15, 23, 42, 0.1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-primary); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

/* Preloader */
.preloader { position: fixed; inset: 0; background: var(--bg-primary); display: flex; align-items: center; justify-content: center; z-index: 10000; transition: opacity 0.5s, visibility 0.5s; }
.preloader.hidden { opacity: 0; visibility: hidden; }
.preloader-content { text-align: center; }
.neural-network { position: relative; width: 120px; height: 120px; margin: 0 auto 20px; }
.neuron { position: absolute; width: 12px; height: 12px; background: var(--primary-light); border-radius: 50%; animation: neuronPulse 1.5s ease-in-out infinite; }
.n1 { top: 10px; left: 50%; transform: translateX(-50%); }
.n2 { top: 40px; left: 20px; animation-delay: 0.2s; }
.n3 { top: 40px; right: 20px; animation-delay: 0.4s; }
.n4 { bottom: 40px; left: 20px; animation-delay: 0.6s; }
.n5 { bottom: 40px; right: 20px; animation-delay: 0.8s; }
.n6 { bottom: 10px; left: 50%; transform: translateX(-50%); animation-delay: 1s; }
.connection { position: absolute; height: 2px; background: linear-gradient(90deg, var(--primary), transparent); animation: connectionFlow 1.5s ease-in-out infinite; }
.c1 { width: 30px; top: 25px; left: 35px; transform: rotate(45deg); }
.c2 { width: 30px; top: 25px; right: 35px; transform: rotate(-45deg); animation-delay: 0.3s; }
.c3 { width: 40px; top: 50%; left: 30px; animation-delay: 0.5s; }
.c4 { width: 40px; top: 50%; right: 30px; animation-delay: 0.7s; }
.c5 { width: 30px; bottom: 25px; left: 35px; transform: rotate(-45deg); animation-delay: 0.9s; }
.c6 { width: 30px; bottom: 25px; right: 35px; transform: rotate(45deg); animation-delay: 1.1s; }
@keyframes neuronPulse { 0%, 100% { transform: scale(1); box-shadow: 0 0 10px var(--primary-glow); } 50% { transform: scale(1.3); box-shadow: 0 0 20px var(--primary-glow); } }
@keyframes connectionFlow { 0% { opacity: 0.3; } 50% { opacity: 1; } 100% { opacity: 0.3; } }
.preloader-text { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 15px; }
.preloader-text .dot { animation: dotBlink 1.4s infinite; }
.preloader-text .dot:nth-child(2) { animation-delay: 0.2s; }
.preloader-text .dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes dotBlink { 0%, 100% { opacity: 0; } 50% { opacity: 1; } }
.preloader-progress { width: 200px; height: 3px; background: var(--bg-tertiary); border-radius: 3px; overflow: hidden; }
.progress-bar { width: 0; height: 100%; background: var(--gradient-primary); animation: progressLoad 2s ease-in-out forwards; }
@keyframes progressLoad { to { width: 100%; } }

/* Custom Cursor */
.cursor-dot, .cursor-ring { position: fixed; pointer-events: none; z-index: 9999; }
.cursor-dot { width: 8px; height: 8px; background: var(--primary-light); border-radius: 50%; transform: translate(-50%, -50%); transition: transform 0.1s; }
.cursor-ring { width: 40px; height: 40px; border: 2px solid var(--primary); border-radius: 50%; transform: translate(-50%, -50%); transition: all 0.15s ease-out; }
.cursor-ring.hover { width: 60px; height: 60px; border-color: var(--accent); }

/* Scroll Progress */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; background: var(--gradient-primary); z-index: 1001; transition: width 0.1s; }

/* Background Animation */
.bg-animation { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.bg-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(14, 165, 165, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(14, 165, 165, 0.03) 1px, transparent 1px); background-size: 50px 50px; animation: gridMove 20s linear infinite; }
@keyframes gridMove { to { transform: translate(50px, 50px); } }
.floating-shapes { position: absolute; inset: 0; }
.shape { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4; animation: float 25s ease-in-out infinite; }
.shape-1 { width: 500px; height: 500px; background: var(--primary-glow); top: -150px; right: -150px; }
.shape-2 { width: 400px; height: 400px; background: var(--accent-glow); bottom: 10%; left: -200px; animation-delay: -5s; }
.shape-3 { width: 300px; height: 300px; background: rgba(78, 205, 196, 0.3); top: 40%; right: 10%; animation-delay: -10s; }
.shape-4 { width: 250px; height: 250px; background: rgba(255, 230, 109, 0.2); bottom: 20%; right: 25%; animation-delay: -15s; }
.shape-5 { width: 350px; height: 350px; background: var(--primary-glow); top: 60%; left: 15%; animation-delay: -7s; }
@keyframes float { 0%, 100% { transform: translate(0, 0) scale(1); } 25% { transform: translate(40px, -40px) scale(1.05); } 50% { transform: translate(-30px, 30px) scale(0.95); } 75% { transform: translate(30px, 40px) scale(1.02); } }
#neuralCanvas { position: absolute; inset: 0; opacity: 0.3; }

/* Toast Notifications */
.toast-container { position: fixed; top: 100px; right: 20px; z-index: 9998; display: flex; flex-direction: column; gap: 10px; }
.toast { padding: 15px 20px; background: var(--bg-card); backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: 12px; display: flex; align-items: center; gap: 12px; animation: toastIn 0.3s ease forwards; box-shadow: 0 10px 40px rgba(0,0,0,0.3); }
.toast.success { border-color: #22C55E; }
.toast.success i { color: #22C55E; }
.toast.error { border-color: #EF4444; }
.toast.error i { color: #EF4444; }
.toast.info { border-color: var(--primary); }
.toast.info i { color: var(--primary-light); }
@keyframes toastIn { from { transform: translateX(100px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Header */
.header { position: fixed; top: 0; left: 0; right: 0; height: var(--header-height); background: rgba(5, 10, 21, 0.8); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-color); z-index: 1000; transition: all var(--transition-normal); }
.header.scrolled { background: rgba(5, 10, 21, 0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
.header-content { display: flex; align-items: center; justify-content: space-between; height: 100%; max-width: 1400px; margin: 0 auto; padding: 0 30px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.3rem; }
.logo-icon { width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: 12px; color: white; font-size: 1.1rem; }
.logo-text { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { display: flex; align-items: center; gap: 6px; color: var(--text-secondary); font-weight: 500; padding: 8px 0; position: relative; transition: color var(--transition-fast); }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--gradient-primary); transition: width var(--transition-normal); }
.nav-links a:hover { color: var(--primary-light); }
.nav-links a:hover::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 15px; }
.theme-toggle, .sound-toggle { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: 10px; color: var(--text-secondary); font-size: 1rem; transition: all var(--transition-fast); }
.theme-toggle:hover, .sound-toggle:hover { background: var(--primary); color: white; }
.mobile-menu-btn { display: none; width: 30px; height: 24px; flex-direction: column; justify-content: space-between; }
.mobile-menu-btn span { display: block; height: 3px; background: var(--text-primary); border-radius: 3px; transition: all var(--transition-fast); }
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }
.mobile-menu { display: none; position: fixed; top: var(--header-height); left: 0; right: 0; background: rgba(5, 10, 21, 0.98); backdrop-filter: blur(20px); padding: 20px; flex-direction: column; gap: 10px; z-index: 999; }
.mobile-menu.active { display: flex; }
.mobile-menu a { display: flex; align-items: center; gap: 10px; padding: 15px; color: var(--text-secondary); border-radius: 10px; transition: all var(--transition-fast); }
.mobile-menu a:hover { background: var(--bg-tertiary); color: var(--primary-light); }

/* Container */
.container { max-width: 1400px; margin: 0 auto; padding: 0 30px; }

/* Glass Card */
.glass-card { background: var(--bg-card); backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: 20px; }

/* Hero Section */
.hero { min-height: 100vh; padding: calc(var(--header-height) + 60px) 0 60px; display: flex; align-items: center; position: relative; }
.hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content { animation: fadeInUp 0.8s ease forwards; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(14, 165, 165, 0.1); border: 1px solid rgba(14, 165, 165, 0.3); border-radius: 50px; font-size: 0.9rem; font-weight: 500; color: var(--primary-light); margin-bottom: 20px; position: relative; }
.badge-pulse { position: absolute; inset: -2px; border-radius: 50px; border: 2px solid var(--primary); animation: badgePulse 2s ease-in-out infinite; }
@keyframes badgePulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.1); opacity: 0; } }
.badge-new { background: var(--accent); color: white; padding: 2px 8px; border-radius: 4px; font-size: 0.7rem; font-weight: 700; margin-left: 5px; }
.hero-title { font-family: var(--font-display); font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; line-height: 1.1; margin-bottom: 20px; min-height: 130px; }
.cursor-blink { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-description { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 30px; max-width: 550px; }
.hero-stats { display: flex; gap: 20px; margin-bottom: 30px; }
.stat-item { display: flex; align-items: center; gap: 15px; padding: 15px 20px; position: relative; overflow: hidden; }
.stat-icon { width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: 12px; color: var(--primary-light); font-size: 1.3rem; }
.stat-icon.pulse-glow { animation: pulseGlow 2s ease-in-out infinite; }
@keyframes pulseGlow { 0%, 100% { box-shadow: 0 0 0 0 var(--primary-glow); } 50% { box-shadow: 0 0 20px 5px var(--primary-glow); } }
.stat-value { font-size: 1.8rem; font-weight: 700; font-family: var(--font-display); }
.stat-value::after { content: '+'; font-size: 0.7em; }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }
.stat-ring { position: absolute; top: 10px; right: 10px; width: 24px; height: 24px; opacity: 0.3; }
.stat-ring circle { stroke: var(--primary-light); }
.hero-actions { display: flex; gap: 15px; flex-wrap: wrap; margin-bottom: 25px; }
.keyboard-hints { display: flex; gap: 15px; font-size: 0.8rem; color: var(--text-muted); }
.kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; padding: 0 6px; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: 5px; font-family: var(--font-mono); font-size: 0.75rem; margin-right: 5px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 28px; font-size: 1rem; font-weight: 600; border-radius: 12px; position: relative; overflow: hidden; transition: all var(--transition-normal); }
.btn-bg { position: absolute; inset: 0; background: var(--gradient-primary); z-index: 0; }
.btn span, .btn i { position: relative; z-index: 1; }
.btn-shine { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent); transform: rotate(45deg); animation: shine 3s infinite; }
@keyframes shine { 0% { left: -50%; } 100% { left: 150%; } }
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: 0 4px 20px var(--primary-glow); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 35px var(--primary-glow); }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary-light); }
.btn-download { background: var(--gradient-primary); color: white; font-size: 1.15rem; padding: 18px 35px; box-shadow: 0 4px 25px var(--primary-glow); }
.btn-small { padding: 10px 18px; font-size: 0.9rem; }
.magnetic { transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); }

/* Hero Visual */
.hero-visual { animation: fadeInRight 0.8s ease 0.3s forwards; opacity: 0; position: relative; }
@keyframes fadeInRight { to { opacity: 1; transform: translateX(0); } from { transform: translateX(40px); } }
.detection-demo { padding: 0; overflow: hidden; }
.demo-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 15px; background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color); }
.demo-dots { display: flex; gap: 8px; }
.demo-dots .dot { width: 12px; height: 12px; border-radius: 50%; }
.demo-dots .red { background: #FF5F57; }
.demo-dots .yellow { background: #FFBD2E; }
.demo-dots .green { background: #28CA42; }
.demo-title { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); }
.demo-actions { display: flex; gap: 8px; }
.demo-btn { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; background: var(--bg-card); border-radius: 6px; color: var(--text-muted); font-size: 0.8rem; transition: all var(--transition-fast); }
.demo-btn:hover { background: var(--primary); color: white; }
.demo-image { position: relative; aspect-ratio: 16/10; background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary)); overflow: hidden; }
.demo-placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-muted); }
.demo-placeholder i { font-size: 4rem; margin-bottom: 10px; opacity: 0.3; }
.bounding-box { position: absolute; border: 3px solid; border-radius: 4px; animation: boxAppear 0.5s ease forwards, boxPulse 3s ease-in-out infinite; }
@keyframes boxAppear { from { opacity: 0; transform: scale(0.8); } to { opacity: 1; transform: scale(1); } }
@keyframes boxPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.8; } }
.box-1 { top: 12%; left: 8%; width: 28%; height: 65%; border-color: #FF6B6B; animation-delay: 0.2s; }
.box-2 { top: 35%; right: 10%; width: 38%; height: 35%; border-color: #4ECDC4; animation-delay: 0.4s; }
.box-3 { bottom: 8%; left: 25%; width: 22%; height: 28%; border-color: #FFE66D; animation-delay: 0.6s; }
.box-label { position: absolute; top: -32px; left: -3px; padding: 5px 10px; border-radius: 6px; font-size: 0.75rem; font-weight: 600; white-space: nowrap; display: flex; align-items: center; gap: 5px; }
.box-1 .box-label { background: #FF6B6B; color: white; }
.box-2 .box-label { background: #4ECDC4; color: white; }
.box-3 .box-label { background: #FFE66D; color: #333; }
.box-corners .corner { position: absolute; width: 10px; height: 10px; border: 3px solid; }
.box-1 .corner { border-color: #FF6B6B; }
.box-2 .corner { border-color: #4ECDC4; }
.box-3 .corner { border-color: #FFE66D; }
.corner.tl { top: -3px; left: -3px; border-right: none; border-bottom: none; }
.corner.tr { top: -3px; right: -3px; border-left: none; border-bottom: none; }
.corner.bl { bottom: -3px; left: -3px; border-right: none; border-top: none; }
.corner.br { bottom: -3px; right: -3px; border-left: none; border-top: none; }
.detection-scanner { position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, transparent, var(--primary-light), transparent); animation: scan 2s linear infinite; }
@keyframes scan { from { top: 0; } to { top: 100%; } }
.confidence-meter { position: absolute; bottom: 15px; right: 15px; background: rgba(0,0,0,0.7); backdrop-filter: blur(10px); padding: 10px 15px; border-radius: 10px; }
.meter-label { font-size: 0.7rem; color: var(--text-muted); margin-bottom: 5px; }
.meter-bar { width: 120px; height: 6px; background: var(--bg-tertiary); border-radius: 3px; overflow: hidden; }
.meter-fill { height: 100%; background: var(--gradient-primary); transition: width 0.5s ease; }
.meter-value { font-size: 0.85rem; font-weight: 700; color: var(--primary-light); margin-top: 5px; }
.demo-info { display: flex; gap: 20px; padding: 15px 20px; background: var(--bg-tertiary); border-top: 1px solid var(--border-color); }
.info-item { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-secondary); }
.info-item i { color: var(--primary-light); }
.floating-elements { position: absolute; inset: -50px; pointer-events: none; }
.float-elem { position: absolute; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; color: var(--primary-light); font-size: 1.3rem; animation: floatElem 6s ease-in-out infinite; }
.elem-1 { top: 5%; right: -20px; animation-delay: 0s; }
.elem-2 { top: 40%; right: -40px; animation-delay: 1.5s; }
.elem-3 { bottom: 20%; right: -30px; animation-delay: 3s; }
.elem-4 { bottom: 5%; left: -20px; animation-delay: 4.5s; }
@keyframes floatElem { 0%, 100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-20px) rotate(10deg); } }
.scroll-indicator { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 10px; animation: fadeInUp 1s ease 1s forwards; opacity: 0; }
.mouse { width: 26px; height: 40px; border: 2px solid var(--text-muted); border-radius: 15px; display: flex; justify-content: center; padding-top: 8px; }
.wheel { width: 4px; height: 8px; background: var(--primary-light); border-radius: 2px; animation: scroll 1.5s ease-in-out infinite; }
@keyframes scroll { 0%, 100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(10px); opacity: 0; } }
.scroll-indicator span { font-size: 0.8rem; color: var(--text-muted); }

/* Section Styles */
section { padding: 100px 0; position: relative; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(14, 165, 165, 0.1); border: 1px solid rgba(14, 165, 165, 0.2); border-radius: 50px; font-size: 0.85rem; color: var(--primary-light); margin-bottom: 15px; }
.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; margin-bottom: 15px; }
.section-title.glitch { position: relative; }
.section-title.glitch::before, .section-title.glitch::after { content: attr(data-text); position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.section-title.glitch::before { left: 2px; text-shadow: -2px 0 var(--accent); clip: rect(24px, 550px, 90px, 0); animation: glitch-anim-2 3s infinite linear alternate-reverse; }
.section-title.glitch::after { left: -2px; text-shadow: -2px 0 var(--primary); clip: rect(85px, 550px, 140px, 0); animation: glitch-anim 2.5s infinite linear alternate-reverse; }
@keyframes glitch-anim { 0% { clip: rect(30px, 9999px, 10px, 0); } 5% { clip: rect(54px, 9999px, 98px, 0); } 10% { clip: rect(23px, 9999px, 29px, 0); } 15% { clip: rect(16px, 9999px, 75px, 0); } 20% { clip: rect(71px, 9999px, 69px, 0); } 25% { clip: rect(87px, 9999px, 43px, 0); } 30% { clip: rect(24px, 9999px, 10px, 0); } 35% { clip: rect(73px, 9999px, 28px, 0); } 40% { clip: rect(10px, 9999px, 61px, 0); } 45% { clip: rect(30px, 9999px, 10px, 0); } 50% { clip: rect(2px, 9999px, 51px, 0); } 55% { clip: rect(16px, 9999px, 13px, 0); } 60% { clip: rect(24px, 9999px, 10px, 0); } 65% { clip: rect(47px, 9999px, 89px, 0); } 70% { clip: rect(11px, 9999px, 32px, 0); } 75% { clip: rect(94px, 9999px, 53px, 0); } 80% { clip: rect(73px, 9999px, 28px, 0); } 85% { clip: rect(82px, 9999px, 37px, 0); } 90% { clip: rect(26px, 9999px, 66px, 0); } 95% { clip: rect(97px, 9999px, 25px, 0); } 100% { clip: rect(38px, 9999px, 15px, 0); } }
@keyframes glitch-anim-2 { 0% { clip: rect(65px, 9999px, 100px, 0); } 5% { clip: rect(12px, 9999px, 59px, 0); } 10% { clip: rect(48px, 9999px, 29px, 0); } 15% { clip: rect(71px, 9999px, 33px, 0); } 20% { clip: rect(2px, 9999px, 41px, 0); } 25% { clip: rect(30px, 9999px, 10px, 0); } 30% { clip: rect(94px, 9999px, 53px, 0); } 35% { clip: rect(11px, 9999px, 32px, 0); } 40% { clip: rect(26px, 9999px, 66px, 0); } 45% { clip: rect(73px, 9999px, 28px, 0); } 50% { clip: rect(30px, 9999px, 10px, 0); } 55% { clip: rect(82px, 9999px, 37px, 0); } 60% { clip: rect(47px, 9999px, 89px, 0); } 65% { clip: rect(16px, 9999px, 13px, 0); } 70% { clip: rect(24px, 9999px, 10px, 0); } 75% { clip: rect(54px, 9999px, 98px, 0); } 80% { clip: rect(97px, 9999px, 25px, 0); } 85% { clip: rect(38px, 9999px, 15px, 0); } 90% { clip: rect(87px, 9999px, 43px, 0); } 95% { clip: rect(23px, 9999px, 29px, 0); } 100% { clip: rect(16px, 9999px, 75px, 0); } }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

/* Features Section */
.features { background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary)); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 25px; }
.feature-card { padding: 30px; position: relative; overflow: hidden; transition: all var(--transition-normal); }
.feature-card:hover { transform: translateY(-8px); border-color: var(--primary); }
.feature-glow { position: absolute; top: 0; left: 50%; width: 200px; height: 200px; background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%); transform: translate(-50%, -50%); opacity: 0; transition: opacity var(--transition-normal); }
.feature-card:hover .feature-glow { opacity: 1; }
.feature-icon { width: 70px; height: 70px; display: flex; align-items: center; justify-content: center; background: rgba(14, 165, 165, 0.1); border-radius: 16px; color: var(--primary-light); font-size: 1.6rem; margin-bottom: 20px; position: relative; }
.icon-particles { position: absolute; inset: 0; }
.feature-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); line-height: 1.6; margin-bottom: 15px; }
.feature-tag { display: inline-block; padding: 5px 12px; background: var(--bg-tertiary); border-radius: 20px; font-size: 0.8rem; color: var(--primary-light); }

/* Statistics Section */
.statistics { background: var(--bg-primary); }
.stats-dashboard { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 25px; }
.stats-card { padding: 25px; }
.stats-card h3 { display: flex; align-items: center; gap: 10px; font-size: 1.1rem; margin-bottom: 20px; color: var(--text-primary); }
.stats-card h3 i { color: var(--primary-light); }
.chart-container { height: 250px; }
.metrics-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.metric-item { text-align: center; }
.metric-circle { width: 90px; height: 90px; margin: 0 auto 10px; position: relative; }
.metric-circle svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.metric-progress { transition: stroke-dasharray 1s ease; }
.metric-value { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.1rem; font-weight: 700; color: var(--text-primary); }
.metric-label { font-size: 0.85rem; color: var(--text-muted); }

/* Playground Section */
.playground { background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary)); }
.playground-container { display: grid; grid-template-columns: 1.5fr 1fr; gap: 25px; }
.playground-canvas-wrapper { padding: 0; overflow: hidden; }
.canvas-toolbar { display: flex; align-items: center; gap: 10px; padding: 12px 15px; background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color); }
.tool-btn { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--bg-card); border-radius: 8px; color: var(--text-muted); font-size: 0.9rem; transition: all var(--transition-fast); }
.tool-btn:hover, .tool-btn.active { background: var(--primary); color: white; }
.toolbar-divider { width: 1px; height: 24px; background: var(--border-color); margin: 0 5px; }
.class-selector { padding: 8px 12px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-primary); font-size: 0.9rem; cursor: pointer; }
.canvas-area { aspect-ratio: 4/3; background: var(--bg-tertiary); position: relative; cursor: crosshair; }
.canvas-placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-muted); }
.canvas-placeholder i { font-size: 3rem; margin-bottom: 15px; opacity: 0.3; }
.canvas-placeholder .hint { font-size: 0.85rem; margin-top: 10px; }
.canvas-status { display: flex; justify-content: space-between; padding: 12px 15px; background: var(--bg-tertiary); border-top: 1px solid var(--border-color); font-size: 0.85rem; color: var(--text-muted); }
.playground-output { padding: 0; display: flex; flex-direction: column; }
.output-tabs { display: flex; background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color); }
.output-tab { flex: 1; padding: 12px; text-align: center; color: var(--text-muted); font-size: 0.9rem; font-weight: 500; transition: all var(--transition-fast); }
.output-tab:hover { color: var(--text-secondary); }
.output-tab.active { color: var(--primary-light); background: var(--bg-card); border-bottom: 2px solid var(--primary); }
.output-content { flex: 1; padding: 15px; position: relative; overflow: auto; }
.output-code { font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.7; color: var(--text-secondary); margin: 0; white-space: pre-wrap; }
.copy-btn { position: absolute; top: 15px; right: 15px; display: flex; align-items: center; gap: 6px; padding: 8px 12px; background: var(--bg-tertiary); border-radius: 6px; color: var(--text-muted); font-size: 0.8rem; transition: all var(--transition-fast); }
.copy-btn:hover { background: var(--primary); color: white; }
.output-actions { display: flex; gap: 10px; padding: 15px; border-top: 1px solid var(--border-color); }

/* Preview Section */
.preview { background: var(--bg-primary); }
.class-filter { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-btn { display: flex; align-items: center; gap: 8px; padding: 10px 18px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 50px; color: var(--text-secondary); font-size: 0.9rem; transition: all var(--transition-fast); }
.filter-btn:hover, .filter-btn.active { background: var(--primary); border-color: var(--primary); color: white; }
.preview-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; }
.preview-card { border-radius: 16px; overflow: hidden; background: var(--bg-card); border: 1px solid var(--border-color); transition: all var(--transition-normal); }
.preview-card:hover { transform: translateY(-8px) scale(1.02); box-shadow: var(--shadow-glow); }
.preview-card.hidden { display: none; }
.preview-image { position: relative; aspect-ratio: 4/3; background: var(--bg-tertiary); }
.preview-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 4rem; color: var(--text-muted); opacity: 0.2; }
.preview-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.8) 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 20px; opacity: 0; transition: opacity var(--transition-normal); }
.preview-card:hover .preview-overlay { opacity: 1; }
.class-badge { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 50px; font-size: 0.85rem; font-weight: 600; color: white; }
.class-badge.person { background: #FF6B6B; }
.class-badge.car { background: #4ECDC4; }
.class-badge.dog { background: #FFE66D; color: #333; }
.class-badge.cat { background: #A8E6CF; color: #333; }
.class-badge.bicycle { background: #DDA0DD; }
.class-badge.motorcycle { background: #98D8C8; color: #333; }
.zoom-btn { position: absolute; top: 15px; right: 15px; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); border-radius: 50%; color: white; transition: all var(--transition-fast); }
.zoom-btn:hover { background: var(--primary); transform: scale(1.1); }
.preview-annotations { position: absolute; bottom: 10px; right: 10px; padding: 5px 10px; background: rgba(0,0,0,0.6); border-radius: 20px; font-size: 0.75rem; color: white; }

/* Structure Section */
.structure { background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary)); }
.structure-content { display: grid; grid-template-columns: 1fr 1.5fr; gap: 30px; }
.folder-tree { padding: 0; font-family: var(--font-mono); font-size: 0.9rem; }
.tree-header { display: flex; align-items: center; gap: 10px; padding: 15px 20px; background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color); color: var(--text-muted); font-size: 0.85rem; }
.tree-item { display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: var(--text-secondary); transition: background var(--transition-fast); cursor: default; }
.tree-item:hover { background: rgba(255,255,255,0.02); }
.tree-item i { color: var(--primary-light); width: 16px; }
.tree-item i.fa-folder, .tree-item i.fa-folder-open { color: #FFE66D; }
.tree-item i.yaml { color: #FF6B6B; }
.tree-item i.json { color: #A8E6CF; }
.tree-item i.fa-markdown { color: #94A3B8; }
.tree-item.root { color: var(--text-primary); font-weight: 600; }
.tree-item.level-1 { padding-left: 40px; }
.tree-item.level-2 { padding-left: 60px; }
.tree-badge { margin-left: auto; padding: 3px 8px; background: var(--primary); border-radius: 4px; font-size: 0.7rem; color: white; }
.tree-info { margin-left: auto; font-size: 0.75rem; color: var(--text-muted); }
.tree-info.file-count { background: var(--bg-tertiary); padding: 3px 8px; border-radius: 4px; }
.code-preview { padding: 0; display: flex; flex-direction: column; }
.code-header { display: flex; justify-content: space-between; align-items: center; background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color); }
.code-tabs { display: flex; }
.code-tab { display: flex; align-items: center; gap: 8px; padding: 12px 18px; color: var(--text-muted); font-size: 0.9rem; transition: all var(--transition-fast); }
.code-tab:hover { color: var(--text-secondary); }
.code-tab.active { color: var(--primary-light); background: var(--bg-card); border-bottom: 2px solid var(--primary); }
.copy-code-btn { margin-right: 10px; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--bg-card); border-radius: 8px; color: var(--text-muted); transition: all var(--transition-fast); }
.copy-code-btn:hover { background: var(--primary); color: white; }
.code-content { flex: 1; padding: 20px; overflow: auto; }
.code-block { font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.8; margin: 0; }
.code-block.hidden { display: none; }
.code-block .comment { color: var(--text-muted); }
.code-block .key { color: var(--primary-light); }
.code-block .string { color: #A8E6CF; }
.code-block .number { color: #FFE66D; }

/* Classes Section */
.classes { background: var(--bg-primary); overflow: hidden; }
.classes-carousel { overflow: hidden; padding: 20px 0; }
.classes-track { display: flex; gap: 25px; animation: scrollClasses 30s linear infinite; }
.classes-track:hover { animation-play-state: paused; }
@keyframes scrollClasses { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.class-card { flex-shrink: 0; width: 200px; padding: 25px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; text-align: center; transition: all var(--transition-normal); }
.class-card:hover { transform: translateY(-8px) scale(1.05); border-color: var(--class-color); box-shadow: 0 15px 40px rgba(0,0,0,0.3); }
.class-visual { position: relative; margin-bottom: 15px; }
.class-icon { width: 70px; height: 70px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.05); border-radius: 50%; margin: 0 auto; color: var(--class-color); font-size: 1.8rem; position: relative; z-index: 1; transition: all var(--transition-normal); }
.class-card:hover .class-icon { background: var(--class-color); color: white; transform: scale(1.1); }
.class-glow { position: absolute; top: 50%; left: 50%; width: 100px; height: 100px; background: var(--class-color); border-radius: 50%; filter: blur(30px); opacity: 0; transform: translate(-50%, -50%); transition: opacity var(--transition-normal); }
.class-card:hover .class-glow { opacity: 0.3; }
.class-name { display: block; font-weight: 600; font-size: 1.1rem; margin-bottom: 5px; }
.class-count { font-size: 0.8rem; color: var(--text-muted); display: block; margin-bottom: 12px; }
.class-bar { height: 4px; background: var(--bg-tertiary); border-radius: 2px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 2px; transition: width 0.5s ease; }

/* Quick Start Section */
.quickstart { background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary)); }
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; top: 0; left: 40px; width: 2px; height: 100%; background: linear-gradient(180deg, var(--primary), var(--primary-light)); }
.timeline-item { display: flex; gap: 30px; margin-bottom: 40px; position: relative; }
.timeline-marker { width: 80px; height: 80px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--bg-card); border: 3px solid var(--primary); border-radius: 50%; color: var(--primary-light); font-size: 1.5rem; z-index: 1; }
.timeline-content { flex: 1; padding: 25px; }
.timeline-content h3 { font-size: 1.3rem; margin-bottom: 10px; color: var(--primary-light); }
.timeline-content p { color: var(--text-secondary); margin-bottom: 15px; }
.code-snippet { display: flex; align-items: center; justify-content: space-between; padding: 12px 15px; background: var(--bg-primary); border-radius: 8px; }
.code-snippet code { font-family: var(--font-mono); font-size: 0.85rem; color: var(--primary-light); }
.snippet-copy { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: 6px; color: var(--text-muted); transition: all var(--transition-fast); }
.snippet-copy:hover { background: var(--primary); color: white; }

/* Download Section */
.download { padding: 80px 0; }
.download-card { position: relative; padding: 60px; text-align: center; overflow: hidden; }
.download-bg { position: absolute; inset: 0; background: radial-gradient(ellipse at center, var(--primary-glow) 0%, transparent 60%); opacity: 0.3; }
.download-particles { position: absolute; inset: 0; }
.download-content { position: relative; z-index: 1; }
.download-icon { width: 120px; height: 120px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: 50%; margin: 0 auto 30px; font-size: 3rem; color: white; position: relative; }
.icon-ring { position: absolute; inset: -10px; border: 2px solid var(--primary); border-radius: 50%; animation: ringPulse 2s ease-in-out infinite; }
.icon-ring.delay { animation-delay: 1s; }
@keyframes ringPulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.2); opacity: 0; } }
.download-card h2 { font-size: 2.2rem; margin-bottom: 15px; }
.download-card p { font-size: 1.1rem; color: var(--text-secondary); max-width: 550px; margin: 0 auto 30px; }
.download-info { display: flex; justify-content: center; flex-wrap: wrap; gap: 15px; margin-bottom: 30px; }
.info-badge { display: flex; align-items: center; gap: 8px; padding: 12px 18px; background: var(--bg-tertiary); border-radius: 50px; color: var(--text-secondary); font-size: 0.9rem; }
.info-badge.glass { background: rgba(255,255,255,0.05); backdrop-filter: blur(10px); border: 1px solid var(--border-color); }
.info-badge i { color: var(--primary-light); }
.download-progress { margin-top: 20px; }
.download-progress.hidden { display: none; }
.download-progress .progress-bar { width: 300px; height: 6px; background: var(--bg-tertiary); border-radius: 3px; margin: 0 auto 10px; overflow: hidden; }
.download-progress .progress-fill { height: 100%; background: var(--gradient-primary); transition: width 0.3s ease; }
.download-progress .progress-text { font-size: 0.9rem; color: var(--text-muted); }

/* Footer */
.footer { background: var(--bg-secondary); position: relative; padding-top: 0; }
.footer-wave { position: absolute; top: -1px; left: 0; right: 0; }
.footer-wave svg { display: block; width: 100%; height: 120px; fill: var(--bg-primary); }
.footer .container { padding-top: 80px; }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 700; margin-bottom: 15px; }
.footer-brand p { color: var(--text-muted); margin-bottom: 20px; }
.social-links { display: flex; gap: 12px; }
.social-link { width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: 10px; color: var(--text-secondary); font-size: 1.1rem; transition: all var(--transition-fast); }
.social-link:hover { background: var(--primary); color: white; transform: translateY(-3px); }
.footer-links h4, .footer-contact h4, .footer-newsletter h4 { font-size: 1.1rem; margin-bottom: 20px; }
.footer-links ul, .footer-contact ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links a, .footer-contact a { color: var(--text-secondary); transition: color var(--transition-fast); }
.footer-links a:hover, .footer-contact a:hover { color: var(--primary-light); }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); }
.footer-contact i { color: var(--primary-light); width: 18px; }
.footer-newsletter p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 15px; }
.newsletter-form { display: flex; gap: 10px; }
.newsletter-form input { flex: 1; padding: 12px 15px; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: 10px; color: var(--text-primary); font-size: 0.9rem; }
.newsletter-form input::placeholder { color: var(--text-muted); }
.newsletter-form button { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: 10px; color: white; transition: all var(--transition-fast); }
.newsletter-form button:hover { transform: scale(1.05); }
.footer-bottom { padding-top: 30px; border-top: 1px solid var(--border-color); text-align: center; }
.footer-credits { margin-bottom: 10px; color: var(--text-secondary); }
.footer-credits strong { color: var(--primary-light); }
.copyright { color: var(--text-muted); font-size: 0.9rem; }
.copyright a { color: var(--primary-light); }

/* Back to Top */
.back-to-top { position: fixed; bottom: 30px; right: 30px; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: 50%; color: white; font-size: 1.2rem; opacity: 0; visibility: hidden; transform: translateY(20px); transition: all var(--transition-normal); z-index: 100; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-5px); box-shadow: var(--shadow-glow); }
.back-to-top .progress-ring { position: absolute; inset: -3px; }
.progress-ring-circle { transition: stroke-dashoffset 0.3s; }

/* Modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(10px); display: flex; align-items: center; justify-content: center; z-index: 10000; opacity: 0; visibility: hidden; transition: all var(--transition-normal); }
.modal.active { opacity: 1; visibility: visible; }
.modal-content { max-width: 500px; width: 90%; padding: 30px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; }
.modal-header h3 { display: flex; align-items: center; gap: 10px; font-size: 1.3rem; }
.modal-header h3 i { color: var(--primary-light); }
.modal-close { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--bg-tertiary); border-radius: 8px; color: var(--text-muted); transition: all var(--transition-fast); }
.modal-close:hover { background: var(--accent); color: white; }
.shortcut-list { display: flex; flex-direction: column; gap: 12px; }
.shortcut-item { display: flex; justify-content: space-between; align-items: center; padding: 12px 15px; background: var(--bg-tertiary); border-radius: 10px; }
.shortcut-keys kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 32px; height: 32px; padding: 0 10px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 6px; font-family: var(--font-mono); font-size: 0.85rem; }
.shortcut-desc { color: var(--text-secondary); }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.95); display: flex; align-items: center; justify-content: center; z-index: 10000; opacity: 0; visibility: hidden; transition: all var(--transition-normal); }
.lightbox.active { opacity: 1; visibility: visible; }
.lightbox-close { position: absolute; top: 20px; right: 20px; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.1); border-radius: 50%; color: white; font-size: 1.3rem; transition: all var(--transition-fast); }
.lightbox-close:hover { background: var(--accent); }
.lightbox-content { max-width: 90%; max-height: 90vh; text-align: center; }
.lightbox-content img { max-width: 100%; max-height: 80vh; border-radius: 10px; }
.lightbox-info { margin-top: 20px; display: flex; justify-content: center; gap: 20px; }

/* Confetti */
.confetti-container { position: fixed; inset: 0; pointer-events: none; z-index: 9999; }
.confetti { position: absolute; width: 10px; height: 10px; animation: confettiFall 3s ease-in-out forwards; }
@keyframes confettiFall { 0% { transform: translateY(-100%) rotate(0deg); opacity: 1; } 100% { transform: translateY(100vh) rotate(720deg); opacity: 0; } }

/* Responsive */
@media (max-width: 1200px) {
    .stats-dashboard { grid-template-columns: 1fr 1fr; }
    .metrics-card { grid-column: span 2; }
    .footer-content { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 1024px) {
    .hero .container { grid-template-columns: 1fr; gap: 40px; }
    .hero-content { text-align: center; }
    .hero-description { margin: 0 auto 30px; }
    .hero-stats { justify-content: center; }
    .hero-actions { justify-content: center; }
    .keyboard-hints { justify-content: center; }
    .structure-content, .playground-container { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    :root { --header-height: 60px; }
    .nav-links, .header-actions .theme-toggle, .header-actions .sound-toggle { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero-stats { flex-direction: column; align-items: center; }
    .hero-actions { flex-direction: column; }
    .stats-dashboard { grid-template-columns: 1fr; }
    .metrics-card { grid-column: span 1; }
    .timeline::before { left: 20px; }
    .timeline-marker { width: 40px; height: 40px; font-size: 1rem; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .social-links { justify-content: center; }
    .newsletter-form { flex-direction: column; }
}
@media (max-width: 480px) {
    .container { padding: 0 15px; }
    section { padding: 60px 0; }
    .hero-title { font-size: 2rem; }
    .section-title { font-size: 1.8rem; }
    .features-grid, .preview-gallery { grid-template-columns: 1fr; }
    .class-filter { gap: 8px; }
    .filter-btn { padding: 8px 12px; font-size: 0.8rem; }
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }
::selection { background: var(--primary); color: white; }