/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Modern Color Palette */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    --secondary-50: #faf5ff;
    --secondary-100: #f3e8ff;
    --secondary-200: #e9d5ff;
    --secondary-300: #d8b4fe;
    --secondary-400: #c084fc;
    --secondary-500: #a855f7;
    --secondary-600: #9333ea;
    --secondary-700: #7c3aed;
    --secondary-800: #6b21a8;
    --secondary-900: #581c87;
    
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-inverse: #ffffff;
    
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    --border-light: var(--gray-200);
    --border-medium: var(--gray-300);
    --border-dark: var(--gray-400);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Poppins', var(--font-sans);
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-600);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--primary-500);
    text-decoration: none;
}

.logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-600);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    position: relative;
    overflow: hidden;
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    animation: gradientShift 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero .container {
    position: relative;
    z-index: 1;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: white;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #ff6b6b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textGlow 3s ease-in-out infinite alternate;
}

@keyframes textGlow {
    from { filter: drop-shadow(0 0 10px rgba(251, 191, 36, 0.5)); }
    to { filter: drop-shadow(0 0 20px rgba(255, 107, 107, 0.8)); }
}

.hero-description {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.feature-item svg {
    color: #10b981;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-visual {
    margin-top: var(--space-16);
    display: flex;
    justify-content: center;
}

.hero-image {
    position: relative;
}

.thumbnail-preview {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--border-light);
}

.thumbnail-sample {
    width: 320px;
    height: 180px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sample-content {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    color: white;
}

.sample-face {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    border: 3px solid white;
}

.sample-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.sample-arrow {
    font-size: var(--text-3xl);
    font-weight: 800;
}

.generation-indicator {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-300);
    transition: background var(--transition-fast);
}

.indicator-dot.active {
    background: var(--primary-500);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: inherit;
    white-space: nowrap;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-md {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-primary {
    background: var(--primary-600);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-primary::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 0.5s;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-700);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

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

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--border-dark);
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loader svg {
    animation: spin 1s linear infinite;
}

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

/* Ad Container */
.ad-container {
    display: flex;
    justify-content: center;
    margin: var(--space-16) 0;
    padding: var(--space-4);
}

/* Main Content */
.main-content {
    padding: var(--space-16) 0;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.1);
    color: #fbbf24;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(251, 191, 36, 0.3);
}

.how-it-works-section .section-badge {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-500);
    border-color: rgba(59, 130, 246, 0.3);
}

.pricing-section .section-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.3);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 800;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    line-height: 1.1;
}

.features-section .section-title,
.pricing-section .section-title {
    color: white;
}

.how-it-works-section .section-title {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--secondary-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.features-section .section-description,
.pricing-section .section-description {
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
}

/* Generator Section */
.generator-section {
    padding: var(--space-20) 0;
    background: 
        linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23e2e8f0"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.generator-card {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    margin-bottom: var(--space-8);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    transition: all var(--transition-normal);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.generator-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.generator-card:hover {
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
    transform: translateY(-8px) scale(1.02);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.step-indicator {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-lg);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.step-info h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
    color: var(--text-primary);
}

.step-info p {
    color: var(--text-secondary);
}

.card-content {
    padding: 0;
}

/* Input Tabs */
.input-tabs {
    display: flex;
    gap: var(--space-1);
    background: var(--bg-secondary);
    padding: var(--space-1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
}

.tab-btn {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* URL Input */
.url-input-group {
    display: flex;
    gap: var(--space-4);
    align-items: stretch;
}

.btn-analyze {
    min-width: 120px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-analyze::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 0.5s;
}

.btn-analyze:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.6);
    transform: translateY(-2px);
}

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

.btn-generate {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-generate:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.6);
}

.btn-download {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn-download:hover {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.6);
}
.input-wrapper {
    flex: 1;
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.url-input {
    width: 100%;
    padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.url-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.url-input::placeholder {
    color: var(--text-muted);
}

/* Upload Area */
.upload-area, .face-upload-area {
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-secondary);
}

.upload-area:hover, .face-upload-area:hover {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

.upload-area.dragover, .face-upload-area.dragover {
    border-color: var(--primary-600);
    background: var(--primary-100);
    transform: scale(1.02);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.upload-icon {
    color: var(--primary-500);
}

.upload-content h4 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.upload-content p {
    color: var(--text-secondary);
}

.upload-note {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.upload-tips {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    justify-content: center;
}

.upload-tips span {
    background: var(--bg-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.option-card {
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    text-align: center;
    backdrop-filter: blur(10px);
}

.option-card:hover {
    border-color: var(--primary-400);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(59, 130, 246, 0.2);
    background: rgba(255, 255, 255, 0.95);
}

.option-card.selected {
    border-color: var(--primary-600);
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

.option-icon {
    color: var(--primary-500);
    margin-bottom: var(--space-4);
}

.option-card h4 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.option-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.option-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    box-shadow: 0 2px 10px rgba(16, 185, 129, 0.3);
}

/* Face Preview */
.face-preview {
    text-align: center;
    padding: var(--space-6);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
}

.face-preview img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--primary-500);
    margin-bottom: var(--space-4);
}

/* Generate Content */
.generate-content {
    text-align: center;
    padding: var(--space-8);
}

.generate-preview {
    margin-bottom: var(--space-8);
}

.preview-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    color: var(--text-muted);
}

.preview-placeholder svg {
    margin-bottom: var(--space-4);
}

/* Progress Section */
.progress-content {
    text-align: center;
    padding: var(--space-8);
}

.progress-content h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.progress-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-8);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500) 0%, #10b981 100%);
    width: 0%;
    transition: width 0.5s ease;
    border-radius: var(--radius-full);
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.progress-steps {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.progress-step.active {
    opacity: 1;
}

.step-dot {
    width: 12px;
    height: 12px;
    background: var(--gray-300);
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.progress-step.active .step-dot {
    background: var(--primary-500);
}

.progress-step span {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Result Section */
.result-content {
    padding: var(--space-8);
}

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

.result-icon {
    color: var(--success-500);
    margin-bottom: var(--space-4);
}

.result-header h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

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

.result-comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-8);
    align-items: center;
    margin-bottom: var(--space-8);
}

.comparison-item {
    text-align: center;
}

.comparison-item h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.thumbnail-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.thumbnail-container img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal);
}

.thumbnail-container:hover img {
    transform: scale(1.05);
}

.large-thumbnail img {
    height: 400px;
    border-radius: var(--radius-lg);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 20px rgba(59, 130, 246, 0.2);
}

.quality-badge {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-1);
    box-shadow: 0 2px 10px rgba(16, 185, 129, 0.3);
}

.comparison-arrow {
    color: var(--primary-500);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* Features Section */
.features-section {
    padding: var(--space-20) 0;
    background: 
        linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="hexagons" width="28" height="24" patternUnits="userSpaceOnUse"><polygon points="14,1 26,7 26,19 14,25 2,19 2,7" fill="none" stroke="%23475569" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23hexagons)"/></svg>');
    color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.feature-card {
    background: 
        linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-normal);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-12px) scale(1.05);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.4),
        0 0 30px rgba(251, 191, 36, 0.3);
    border-color: rgba(251, 191, 36, 0.5);
}

.feature-icon {
    color: #fbbf24;
    margin-bottom: var(--space-4);
}

.feature-card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: white;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

/* How It Works Section */
.how-it-works-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
}

.step-item {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: 700;
    margin: 0 auto var(--space-4);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.step-content h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
}

/* Pricing Section */
.pricing-section {
    padding: var(--space-20) 0;
    background: 
        linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="stars" width="20" height="20" patternUnits="userSpaceOnUse"><polygon points="10,1 12,7 18,7 13,11 15,17 10,13 5,17 7,11 2,7 8,7" fill="%23334155" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23stars)"/></svg>');
    color: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: 
        linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    text-align: center;
    position: relative;
    transition: all var(--transition-normal);
    backdrop-filter: blur(20px);
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.pricing-card:hover::before {
    opacity: 1;
}

.pricing-card:hover {
    transform: translateY(-12px) scale(1.05);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.4),
        0 0 40px rgba(16, 185, 129, 0.3);
    border-color: rgba(16, 185, 129, 0.5);
}

.pricing-card.featured {
    border: 2px solid #fbbf24;
    transform: scale(1.05);
    background: 
        linear-gradient(135deg, rgba(251, 191, 36, 0.15) 0%, rgba(245, 158, 11, 0.1) 100%);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(251, 191, 36, 0.4);
}

.pricing-card.featured:hover {
    transform: scale(1.1);
    box-shadow: 
        0 35px 70px rgba(0, 0, 0, 0.5),
        0 0 50px rgba(251, 191, 36, 0.6);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: #0f172a;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.3);
}

.pricing-header h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: white;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.currency {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.7);
}

.amount {
    font-size: var(--text-5xl);
    font-weight: 800;
    color: white;
}

.period {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.7);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.pricing-features li {
    padding: var(--space-2) 0;
    color: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    padding-left: var(--space-6);
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.footer-section h4 {
    color: white;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.footer-brand .logo {
    margin-bottom: var(--space-4);
}

.footer-brand .logo-text {
    color: white;
}

.footer-description {
    margin-bottom: var(--space-6);
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: var(--space-4);
}

.social-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: white;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-8);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-stats {
    display: flex;
    gap: var(--space-4);
    align-items: center;
    font-size: var(--text-sm);
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: var(--space-16) 0;
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .section-description {
        font-size: var(--text-base);
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .hero-description {
        font-size: var(--text-lg);
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
        gap: var(--space-4);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .url-input-group {
        flex-direction: column;
    }
    
    .result-comparison {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    .progress-steps {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-stats {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    .generator-card {
        padding: var(--space-6);
    }
    
    .card-header {
        flex-direction: column;
        text-align: center;
    }
    
    .upload-tips {
        flex-direction: column;
    }
    
    .thumbnail-sample {
        width: 280px;
        height: 157px;
    }
    
    .sample-content {
        flex-direction: column;
        gap: var(--space-2);
    }
    
    .sample-text {
        font-size: var(--text-lg);
    }
    
    .pricing-card.featured {
        transform: none;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

/* Enhanced animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-15px) rotate(1deg); }
    66% { transform: translateY(-5px) rotate(-1deg); }
}

@keyframes glow {
    0%, 100% { 
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.4), 0 0 40px rgba(139, 92, 246, 0.2); 
    }
    50% { 
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.8), 0 0 80px rgba(139, 92, 246, 0.4); 
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.step-indicator {
    animation: pulse 2s ease-in-out infinite;
}

.feature-icon {
    animation: float 4s ease-in-out infinite;
}

.section-badge {
    animation: shimmer 3s ease-in-out infinite;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.3) 50%, 
        rgba(255, 255, 255, 0.1) 100%);
    background-size: 200% 100%;
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Focus Styles for Accessibility */
.btn:focus,
.url-input:focus,
.tab-btn:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border-light: var(--gray-400);
        --border-medium: var(--gray-500);
        --text-secondary: var(--gray-700);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .btn-loader svg {
        animation: none;
    }
}