/* ============================================
   DEEPFAKE DETECTOR - BLACK & WHITE EDITION
   Ultra Clean Minimal Design
   ============================================ */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Core Colors - Pure Black & White */
    --black: #000000;
    --white: #ffffff;
    
    /* Grays */
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --gray-950: #0a0a0a;
    
    /* Theme Colors */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-card-hover: #1a1a1a;
    --bg-elevated: #161616;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    --border-color: #222222;
    --border-light: #333333;
    --border-focus: #ffffff;
    
    /* Status Colors (Muted) */
    --success: #22c55e;
    --warning: #eab308;
    --danger: #ef4444;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-main);
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 9999px;
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 60px rgba(255, 255, 255, 0.1);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f5;
    --bg-elevated: #ffffff;
    
    --text-primary: #000000;
    --text-secondary: #525252;
    --text-muted: #737373;
    
    --border-color: #e5e5e5;
    --border-light: #f0f0f0;
    --border-focus: #000000;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 60px rgba(0, 0, 0, 0.05);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color var(--duration-slow) var(--ease-out),
                color var(--duration-slow) var(--ease-out);
}

::selection {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Focus States */
:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* ============================================
   NOISE OVERLAY
   ============================================ */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    pointer-events: none;
    z-index: 9999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ============================================
   ANIMATED GRID BACKGROUND
   ============================================ */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.cyber-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 75%);
}

[data-theme="light"] .cyber-grid {
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

/* Gradient Orbs */
.aurora {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.aurora::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 50%);
    animation: auroraMove1 20s ease-in-out infinite;
}

.aurora::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
    animation: auroraMove2 25s ease-in-out infinite;
}

@keyframes auroraMove1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30%, 20%); }
}

@keyframes auroraMove2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-20%, -30%); }
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) scale(1);
        opacity: 0;
    }
}

/* Scan Lines - Subtle */
.scan-lines {
    display: none;
}

/* ============================================
   CONTAINER
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* ============================================
   HEADER
   ============================================ */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-4) var(--space-8);
    background: transparent;
    transition: all var(--duration-normal) var(--ease-out);
}

.main-header.scrolled {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="light"] .main-header.scrolled {
    background: rgba(255, 255, 255, 0.9);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    position: relative;
    width: 48px;
    height: 48px;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    overflow: hidden;
    transition: transform var(--duration-normal) var(--ease-out);
}

.logo:hover .logo-icon {
    transform: scale(1.05) rotate(-3deg);
}

.logo-icon .scan-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--bg-primary);
    opacity: 0.5;
    animation: scanMove 2s ease-in-out infinite;
}

@keyframes scanMove {
    0%, 100% { top: 0; }
    50% { top: 100%; }
}

.logo-text h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.logo-text h1 span {
    font-weight: 400;
    opacity: 0.6;
}

.logo-text .tagline {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: 2px;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-link {
    position: relative;
    padding: var(--space-3) var(--space-5);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: all var(--duration-normal) var(--ease-out);
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--text-primary);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
    border-radius: inherit;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::before {
    opacity: 0.05;
}

.nav-link.active::before {
    opacity: 0.1;
}

.nav-link i,
.nav-link span {
    position: relative;
    z-index: 1;
}

/* Theme Toggle */
.theme-toggle {
    position: relative;
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: var(--space-4);
    transition: all var(--duration-normal) var(--ease-out);
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--text-primary);
    background: var(--bg-card);
}

.theme-toggle-thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-primary);
    transition: transform var(--duration-normal) var(--ease-out);
}

.theme-toggle:hover .theme-toggle-thumb {
    transform: rotate(180deg);
}

.theme-toggle-thumb .icon-moon {
    display: none;
}

[data-theme="light"] .theme-toggle-thumb .icon-sun {
    display: none;
}

[data-theme="light"] .theme-toggle-thumb .icon-moon {
    display: block;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-20) var(--space-6);
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

/* Floating Elements */
.hero-float-element {
    position: absolute;
    font-size: 60px;
    color: var(--text-primary);
    opacity: 0.03;
    animation: heroFloat 10s ease-in-out infinite;
}

.hero-float-element:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.hero-float-element:nth-child(2) {
    top: 60%;
    right: 10%;
    animation-delay: 3s;
}

.hero-float-element:nth-child(3) {
    bottom: 20%;
    left: 15%;
    animation-delay: 6s;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

/* Glitch Title */
.glitch-wrapper {
    position: relative;
    margin-bottom: var(--space-8);
}

.glitch {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.glitch::before {
    animation: glitch1 3s infinite linear;
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
    transform: translateX(-2px);
    color: var(--text-primary);
}

.glitch::after {
    animation: glitch2 3s infinite linear;
    clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
    transform: translateX(2px);
    color: var(--text-primary);
}

@keyframes glitch1 {
    0%, 90%, 100% { transform: translateX(0); opacity: 0; }
    91% { transform: translateX(-10px) skewX(-5deg); opacity: 0.8; }
    92% { transform: translateX(8px) skewX(3deg); opacity: 0.8; }
    93% { transform: translateX(-5px); opacity: 0; }
}

@keyframes glitch2 {
    0%, 90%, 100% { transform: translateX(0); opacity: 0; }
    94% { transform: translateX(10px) skewX(5deg); opacity: 0.8; }
    95% { transform: translateX(-8px) skewX(-3deg); opacity: 0.8; }
    96% { transform: translateX(5px); opacity: 0; }
}

/* Glitch Lines */
.glitch-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.glitch-line {
    position: absolute;
    width: 100%;
    height: 1px;
    background: var(--text-primary);
    opacity: 0;
    animation: glitchLine 8s infinite;
}

.glitch-line:nth-child(1) { top: 20%; animation-delay: 0s; }
.glitch-line:nth-child(2) { top: 40%; animation-delay: 2s; }
.glitch-line:nth-child(3) { top: 60%; animation-delay: 4s; }
.glitch-line:nth-child(4) { top: 80%; animation-delay: 6s; }

@keyframes glitchLine {
    0%, 95%, 100% { 
        transform: scaleX(0);
        opacity: 0;
    }
    96%, 99% {
        transform: scaleX(1);
        opacity: 0.5;
    }
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-10);
    line-height: 1.8;
}

/* Trust Badges */
.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--duration-normal) var(--ease-out);
}

.badge:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.badge i {
    font-size: 1rem;
}

/* ============================================
   UPLOAD SECTION
   ============================================ */
.upload-section {
    padding: var(--space-8) var(--space-6) var(--space-20);
    min-height: 50vh;
}

/* Glass Card Base */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--duration-normal) var(--ease-out);
}

.glass-card:hover {
    border-color: var(--border-light);
}

/* Upload Card */
.upload-card {
    max-width: 680px;
    margin: 0 auto;
    padding: var(--space-10);
}

.card-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.header-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--space-6);
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    position: relative;
    overflow: hidden;
}

.header-icon::before {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: iconShine 3s ease-in-out infinite;
}

@keyframes iconShine {
    0%, 100% { top: -100%; }
    50% { top: 100%; }
}

.card-header h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-2);
}

.card-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-12) var(--space-8);
    text-align: center;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--text-primary);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--text-primary);
    border-style: solid;
}

.upload-zone:hover::before,
.upload-zone.dragover::before {
    opacity: 0.02;
}

.upload-content {
    position: relative;
    z-index: 1;
}

/* Upload Icon Wrapper */
.upload-icon-wrapper {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-6);
}

.upload-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--bg-elevated);
    border: 2px solid var(--border-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--text-primary);
    z-index: 2;
    transition: all var(--duration-normal) var(--ease-out);
}

.upload-zone:hover .upload-circle {
    transform: translate(-50%, -50%) scale(1.05);
    border-color: var(--text-primary);
}

/* Orbits */
.orbit {
    position: absolute;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    animation: orbitSpin 20s linear infinite;
}

.orbit::before {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--text-primary);
    border-radius: 50%;
    top: -3px;
    left: 50%;
    transform: translateX(-50%);
}

.orbit-1 {
    width: 100px;
    height: 100px;
    top: 10px;
    left: 10px;
    animation-duration: 15s;
}

.orbit-2 {
    width: 115px;
    height: 115px;
    top: 2.5px;
    left: 2.5px;
    animation-duration: 20s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 120px;
    height: 120px;
    top: 0;
    left: 0;
    animation-duration: 25s;
    border-style: dashed;
}

.orbit-3::before {
    width: 4px;
    height: 4px;
    top: -2px;
    opacity: 0.5;
}

@keyframes orbitSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.upload-zone h4 {
    font-size: 1.25rem;
    margin-bottom: var(--space-2);
}

.upload-zone p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-2);
}

.size-limit {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Browse Button */
.browse-btn {
    margin-top: var(--space-6);
    padding: var(--space-4) var(--space-8);
    background: var(--text-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.browse-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left var(--duration-slow) var(--ease-out);
}

.browse-btn:hover::before {
    left: 100%;
}

.browse-btn:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.browse-btn:active {
    transform: scale(0.98);
}

/* Hidden Upload Zone */
.upload-zone.hidden {
    display: none;
}

/* ============================================
   PREVIEW SECTION
   ============================================ */
.preview-section {
    display: none;
    animation: fadeSlideUp var(--duration-normal) var(--ease-out);
}

.preview-section.active {
    display: block;
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.preview-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-secondary);
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    margin-bottom: var(--space-4);
}

.preview-media {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: none;
}

.preview-media.active {
    display: block;
    animation: fadeIn var(--duration-normal) var(--ease-out);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.remove-btn {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-normal) var(--ease-out);
}

.remove-btn:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
    transform: rotate(90deg);
}

/* File Info */
.file-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-5);
}

.file-name {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 500;
    color: var(--text-primary);
}

.file-size {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

/* Analyze Button */
.analyze-btn {
    width: 100%;
    padding: var(--space-5) var(--space-8);
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.analyze-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--text-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-normal) var(--ease-out);
    z-index: -1;
}

.analyze-btn:hover::before {
    transform: scaleX(1);
}

.analyze-btn:hover {
    color: var(--bg-primary);
}

.analyze-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.analyze-btn:disabled::before {
    display: none;
}

.btn-loader {
    display: none;
}

.analyze-btn.loading .btn-content {
    display: none;
}

.analyze-btn.loading .btn-loader {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   ANALYSIS PROGRESS
   ============================================ */
.analysis-progress {
    display: none;
    max-width: 680px;
    margin: 0 auto;
    animation: fadeSlideUp var(--duration-normal) var(--ease-out);
}

.analysis-progress.active {
    display: block;
}

.progress-card {
    padding: var(--space-10);
}

.progress-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.ai-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-6);
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    position: relative;
    animation: avatarPulse 2s ease-in-out infinite;
}

@keyframes avatarPulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.2);
    }
    50% { 
        transform: scale(1.02);
        box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
    }
}

[data-theme="light"] .ai-avatar {
    animation: avatarPulseLight 2s ease-in-out infinite;
}

@keyframes avatarPulseLight {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.1);
    }
    50% { 
        transform: scale(1.02);
        box-shadow: 0 0 0 20px rgba(0, 0, 0, 0);
    }
}

.progress-header h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
}

.progress-header p {
    color: var(--text-secondary);
}

/* Progress Bar */
.progress-bar-container {
    height: 8px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-3);
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s var(--ease-out);
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: progressShine 1s infinite;
}

@keyframes progressShine {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}

.progress-percent {
    display: block;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--space-8);
}

/* Scan Steps */
.scan-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.scan-step {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) var(--ease-out);
}

.scan-step i:first-child {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--text-muted);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: all var(--duration-normal) var(--ease-out);
}

.scan-step span {
    flex: 1;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--duration-normal) var(--ease-out);
}

.step-status {
    color: var(--text-muted);
    font-size: 14px;
}

/* Active Step */
.scan-step.active {
    border-color: var(--text-primary);
    transform: translateX(8px);
}

.scan-step.active i:first-child {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.scan-step.active span {
    color: var(--text-primary);
}

.scan-step.active .step-status i {
    animation: spin 0.8s linear infinite;
}

/* Completed Step */
.scan-step.completed {
    border-color: var(--success);
}

.scan-step.completed i:first-child {
    background: var(--success);
    color: white;
}

.scan-step.completed span {
    color: var(--success);
}

.scan-step.completed .step-status {
    color: var(--success);
}

/* ============================================
   RESULTS SECTION
   ============================================ */
.results-section {
    display: none;
    max-width: 780px;
    margin: 0 auto;
}

.results-section.active {
    display: block;
    animation: resultsReveal var(--duration-slow) var(--ease-out);
}

@keyframes resultsReveal {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.results-card {
    padding: var(--space-10);
}

/* Verdict Container */
.verdict-container {
    text-align: center;
    padding: var(--space-10);
    margin-bottom: var(--space-8);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.verdict-container::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.03;
}

/* Real */
.verdict-container.real {
    border-color: var(--success);
}

.verdict-container.real::before {
    background: var(--success);
}

/* Fake */
.verdict-container.fake {
    border-color: var(--danger);
}

.verdict-container.fake::before {
    background: var(--danger);
}

/* Uncertain */
.verdict-container.uncertain {
    border-color: var(--warning);
}

.verdict-container.uncertain::before {
    background: var(--warning);
}

.verdict-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 44px;
    animation: verdictPop 0.5s var(--ease-out);
}

@keyframes verdictPop {
    0% { transform: scale(0) rotate(-180deg); }
    60% { transform: scale(1.1) rotate(5deg); }
    100% { transform: scale(1) rotate(0deg); }
}

.verdict-container.real .verdict-icon {
    background: var(--success);
    color: white;
}

.verdict-container.fake .verdict-icon {
    background: var(--danger);
    color: white;
}

.verdict-container.uncertain .verdict-icon {
    background: var(--warning);
    color: white;
}

.verdict-text {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--space-3);
    letter-spacing: 0.05em;
}

.verdict-container.real .verdict-text { color: var(--success); }
.verdict-container.fake .verdict-text { color: var(--danger); }
.verdict-container.uncertain .verdict-text { color: var(--warning); }

.verdict-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Confidence Section */
.confidence-section {
    margin-bottom: var(--space-8);
    padding: var(--space-6);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.confidence-section h4,
.detection-details h4,
.origin-section h4 {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: var(--space-5);
}

.confidence-meter {
    height: 32px;
    background: linear-gradient(90deg, 
        var(--success) 0%, 
        var(--success) 33%, 
        var(--warning) 33%, 
        var(--warning) 66%, 
        var(--danger) 66%, 
        var(--danger) 100%
    );
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    opacity: 0.3;
}

.meter-fill {
    position: absolute;
    top: 0;
    right: 0;
    height: 100%;
    background: var(--bg-card);
    transition: width 1.5s var(--ease-out);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.meter-markers {
    position: absolute;
    bottom: -24px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.confidence-value {
    text-align: center;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    margin-top: var(--space-10);
    letter-spacing: -0.03em;
}

/* Detection Details */
.detection-details {
    margin-bottom: var(--space-8);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) var(--ease-out);
}

.detail-item:hover {
    transform: translateY(-2px);
    border-color: var(--border-light);
}

.detail-item i {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.detail-item.success i {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.detail-item.warning i {
    background: rgba(234, 179, 8, 0.1);
    color: var(--warning);
}

.detail-item.danger i {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.detail-info {
    flex: 1;
    min-width: 0;
}

.detail-info .label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.detail-info .value {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Origin Section */
.origin-section {
    margin-bottom: var(--space-8);
}

.origin-content {
    padding: var(--space-8);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
}

.origin-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
}

.origin-confirmed .origin-icon { color: var(--success); }
.origin-possible .origin-icon { color: var(--warning); }
.origin-unknown .origin-icon { color: var(--text-muted); }

.origin-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-3);
}

.origin-message {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    font-size: 0.95rem;
}

/* AI Source Link */
.ai-source-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    background: var(--text-primary);
    color: var(--bg-primary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all var(--duration-normal) var(--ease-out);
}

.ai-source-link:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* AI Possibilities */
.ai-possibilities {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
    margin-top: var(--space-6);
}

.ai-possibility {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--duration-normal) var(--ease-out);
}

.ai-possibility:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.ai-possibility .probability {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
}

.ai-possibility:hover .probability {
    background: rgba(0, 0, 0, 0.2);
}

/* Fun Message */
.fun-message {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: var(--space-5);
    text-align: left;
}

.fun-message i {
    font-size: 24px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.fun-message p {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    justify-content: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
}

.action-btn {
    padding: var(--space-4) var(--space-6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: all var(--duration-normal) var(--ease-out);
    background: transparent;
    color: var(--text-primary);
}

.action-btn:hover {
    transform: translateY(-2px);
}

.action-btn.primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.action-btn.primary:hover {
    box-shadow: var(--shadow-md);
}

.action-btn.secondary:hover {
    border-color: var(--text-primary);
}

.action-btn.share:hover {
    border-color: var(--text-primary);
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.how-it-works {
    padding: var(--space-20) var(--space-6);
}

.section-title {
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    margin-bottom: var(--space-16);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
}

.title-icon {
    width: 56px;
    height: 56px;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.steps-container {
    display: flex;
    align-items: stretch;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-6);
    max-width: 1100px;
    margin: 0 auto;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-8) var(--space-6);
    text-align: center;
    width: 240px;
    position: relative;
    transition: all var(--duration-normal) var(--ease-out);
}

.step-card:hover {
    transform: translateY(-8px);
    border-color: var(--text-primary);
}

.step-number {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--space-1) var(--space-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
}

.step-icon {
    width: 72px;
    height: 72px;
    margin: var(--space-4) auto var(--space-6);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--text-primary);
    transition: all var(--duration-normal) var(--ease-out);
}

.step-card:hover .step-icon {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
    transform: scale(1.1);
}

.step-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-3);
}

.step-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-connector {
    display: flex;
    align-items: center;
    color: var(--text-muted);
    font-size: 20px;
}

/* ============================================
   AI TOOLS SECTION
   ============================================ */
.ai-tools-section {
    padding: var(--space-16) var(--space-6);
    background: var(--bg-secondary);
}

.ai-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-4);
    max-width: 900px;
    margin: 0 auto;
}

.ai-tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-6) var(--space-4);
    text-align: center;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
}

.ai-tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--text-primary);
}

.tool-logo {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--text-primary);
    transition: all var(--duration-normal) var(--ease-out);
}

.ai-tool-card:hover .tool-logo {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.ai-tool-card span {
    font-weight: 500;
    font-size: 0.9rem;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    padding: var(--space-20) var(--space-6);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-16);
    align-items: start;
    max-width: 1000px;
    margin: 0 auto;
}

.about-text h2 {
    font-size: clamp(1.4rem, 3vw, 1.75rem);
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.about-text h2 i {
    font-size: 1.2em;
}

.about-text > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-text ul {
    list-style: none;
}

.about-text li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    font-size: 0.95rem;
}

.about-text li i {
    color: var(--success);
    margin-top: 4px;
}

.about-text li span {
    color: var(--text-secondary);
}

/* Stats */
.about-stats {
    display: grid;
    gap: var(--space-5);
}

.stat-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-out);
}

.stat-item:hover {
    transform: translateY(-4px);
    border-color: var(--text-primary);
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    opacity: 0.5;
}

.stat-label {
    display: block;
    margin-top: var(--space-2);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ============================================
   FOOTER
   ============================================ */
.main-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: var(--space-16) var(--space-6) var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-12);
    margin-bottom: var(--space-12);
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.footer-logo i {
    font-size: 1.3em;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links h4,
.footer-social h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: var(--space-5);
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--space-3);
    font-size: 0.9rem;
    transition: all var(--duration-fast) var(--ease-out);
}

.footer-links a:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

.footer-links a i {
    font-size: 0.7rem;
    opacity: 0.5;
}

.social-icons {
    display: flex;
    gap: var(--space-3);
}

.social-icons a {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    transition: all var(--duration-normal) var(--ease-out);
}

.social-icons a:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-bottom i.fa-heart {
    color: var(--danger);
}

/* ============================================
   TOAST
   ============================================ */
.toast {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    box-shadow: var(--shadow-lg);
    transform: translateY(calc(100% + var(--space-8)));
    transition: transform var(--duration-normal) var(--ease-out);
    z-index: 9999;
}

.toast.show {
    transform: translateY(0);
}

.toast-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.toast .toast-icon {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.toast.success .toast-icon {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.toast.error .toast-icon {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.toast-message {
    color: var(--text-primary);
    font-size: 0.9rem;
    max-width: 280px;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-2);
    margin-left: var(--space-2);
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast) var(--ease-out);
}

.toast-close:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
    
    .step-connector {
        display: none;
    }
}

@media (max-width: 768px) {
    .main-header {
        padding: var(--space-4);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .main-nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .theme-toggle {
        margin-left: var(--space-2);
    }
    
    .hero {
        padding: var(--space-16) var(--space-6);
        min-height: auto;
    }
    
    .trust-badges {
        flex-direction: column;
        align-items: center;
    }
    
    .upload-card,
    .progress-card,
    .results-card {
        padding: var(--space-6);
    }
    
    .steps-container {
        flex-direction: column;
        align-items: center;
    }
    
    .step-card {
        width: 100%;
        max-width: 320px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
    
    .ai-possibilities {
        flex-direction: column;
        align-items: center;
    }
    
    .ai-possibility {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .nav-link span {
        display: none;
    }
    
    .nav-link {
        padding: var(--space-3);
    }
    
    .logo-text .tagline {
        display: none;
    }
    
    .glitch {
        font-size: 2rem;
    }
    
    .upload-icon-wrapper {
        width: 100px;
        height: 100px;
    }
    
    .upload-circle {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .orbit-1 { width: 80px; height: 80px; top: 10px; left: 10px; }
    .orbit-2 { width: 90px; height: 90px; top: 5px; left: 5px; }
    .orbit-3 { width: 100px; height: 100px; top: 0; left: 0; }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .toast {
        left: var(--space-4);
        right: var(--space-4);
        bottom: var(--space-4);
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}