/* ===================================
   LightCompress - Modern Compression Studio
   A refined dark theme with subtle gradients
   =================================== */

/* CSS Variables */
:root {
    /* Colors - Deep space palette */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(20, 20, 30, 0.8);
    --bg-card-hover: rgba(30, 30, 45, 0.9);
    
    /* Accent colors - Electric cyan with warm highlights */
    --accent-primary: #00d4ff;
    --accent-secondary: #7b61ff;
    --accent-tertiary: #ff6b9d;
    --accent-success: #00e676;
    --accent-warning: #ffab40;
    --accent-error: #ff5252;
    
    /* Text colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --text-muted: rgba(255, 255, 255, 0.3);
    
    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    --border-accent: rgba(0, 212, 255, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    --gradient-border: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    
    /* Typography */
    --font-sans: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Ambient Background */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-tertiary) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
    opacity: 0.2;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(-30px, -20px) scale(1.02); }
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--accent-primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
}

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

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    padding: var(--space-sm);
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.mobile-menu.active {
    display: flex;
}

.mobile-nav-link {
    padding: var(--space-md);
    font-size: 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

@media (max-width: 900px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg) var(--space-3xl);
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.page-hero {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-hero .hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-full);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow-glow);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.4);
}

/* Features Section */
.features-section {
    padding: var(--space-3xl) 0;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--space-2xl);
}

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

.feature-card {
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition-base);
}

.feature-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--accent-primary);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Tool Section */
.tool-section {
    padding: var(--space-xl) 0;
}

.single-tool .panel {
    display: grid;
}

/* Tab Navigation */
.tab-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-xl);
}

.tabs {
    display: inline-flex;
    gap: var(--space-xs);
    padding: var(--space-xs);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.tab {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab.active {
    color: var(--bg-primary);
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow);
}

.tab-icon {
    width: 20px;
    height: 20px;
}

/* Panels */
.panels-container {
    position: relative;
}

.panel {
    display: none;
    grid-template-columns: 1fr 320px;
    gap: var(--space-xl);
    animation: fadeIn 0.3s ease;
}

.panel.active {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
    .panel {
        grid-template-columns: 1fr;
    }
}

/* Upload Zone */
.upload-zone {
    position: relative;
    padding: var(--space-3xl);
    background: var(--bg-card);
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: var(--transition-base);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-primary);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-glow);
}

.upload-zone:hover::before,
.upload-zone.dragover::before {
    opacity: 1;
}

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

.upload-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    color: var(--accent-primary);
    opacity: 0.8;
    transition: var(--transition-base);
}

.upload-zone:hover .upload-icon {
    opacity: 1;
    transform: scale(1.1);
}

.upload-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.upload-desc {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
}

.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.upload-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* Options Panel */
.options-panel {
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    height: fit-content;
}

.options-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
}

.option-group {
    margin-bottom: var(--space-lg);
}

.option-group:last-child {
    margin-bottom: 0;
}

.option-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.option-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Slider */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
    transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.7);
}

.slider-value {
    min-width: 50px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-primary);
    text-align: right;
}

/* Input Field */
.input-field {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    outline: none;
    transition: var(--transition-fast);
}

.input-field:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

/* Styled Select Wrapper */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper .select-field {
    width: 100%;
    padding: 12px 40px 12px 14px;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    transition: var(--transition-fast);
}

.select-wrapper .select-field:hover {
    border-color: var(--border-light);
    background: rgba(26, 26, 37, 0.9);
}

.select-wrapper .select-field:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.select-wrapper .select-field option {
    background: #12121a;
    color: #ffffff;
    padding: 12px;
}

.select-wrapper .select-arrow {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
    pointer-events: none;
    transition: var(--transition-fast);
}

.select-wrapper:hover .select-arrow {
    color: var(--text-secondary);
}

.select-wrapper .select-field:focus + .select-arrow {
    color: var(--accent-primary);
}

/* Results Section */
.results-section {
    margin-top: var(--space-2xl);
    animation: fadeIn 0.3s ease;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.results-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.clear-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.clear-btn:hover {
    color: var(--accent-error);
    border-color: var(--accent-error);
}

.clear-btn svg {
    width: 16px;
    height: 16px;
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Result Item */
.result-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-lg);
    align-items: center;
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.result-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
}

.result-icon svg {
    width: 24px;
    height: 24px;
}

.result-info {
    overflow: hidden;
}

.result-filename {
    font-weight: 500;
    margin-bottom: var(--space-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.result-stat {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.result-stat.highlight {
    color: var(--accent-success);
    font-weight: 500;
}

.result-actions {
    display: flex;
    gap: var(--space-sm);
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

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

.action-btn.download:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.action-btn.delete:hover {
    background: var(--accent-error);
    color: var(--text-primary);
    border-color: var(--accent-error);
}

.action-btn svg {
    width: 18px;
    height: 18px;
}

/* Info Section */
.info-section {
    padding: var(--space-2xl) 0;
}

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

.info-card {
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
}

.info-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

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

.format-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.format-tag {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: all var(--transition);
    display: inline-block;
}

a.format-tag:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.2);
}

a.format-tag.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-secondary);
    font-weight: bold;
}

.howto-list {
    list-style: none;
    counter-reset: step;
}

.howto-list li {
    position: relative;
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    counter-increment: step;
}

.howto-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--accent-primary);
    border-radius: 50%;
}

.info-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
}

/* About Section */
.about-section {
    padding: var(--space-xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.about-card {
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
}

.about-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--accent-primary);
}

.about-icon svg {
    width: 24px;
    height: 24px;
}

.about-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Tech Section */
.tech-section {
    padding: var(--space-2xl) 0;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg) var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    min-width: 140px;
}

.tech-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.tech-desc {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* FAQ Section */
.faq-section {
    padding: var(--space-xl) 0;
    max-width: 800px;
    margin: 0 auto;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: var(--transition-fast);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.02);
}

.faq-icon {
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    transition: var(--transition-base);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--accent-primary);
}

.faq-answer {
    display: none;
    padding: 0 var(--space-lg) var(--space-lg);
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

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

.footer-desc {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    max-width: 280px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.footer-col a {
    display: block;
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-decoration: none;
    padding: var(--space-xs) 0;
    transition: var(--transition-fast);
}

.footer-col a:hover {
    color: var(--text-primary);
}

/* Custom Select Dropdown */
.custom-select {
    position: relative;
    width: 100%;
    max-width: 160px;
    user-select: none;
}

.custom-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.custom-select-trigger:hover {
    border-color: var(--border-light);
    background: rgba(26, 26, 37, 0.9);
}

.custom-select.open .custom-select-trigger {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.custom-select-value {
    font-size: 0.875rem;
    color: var(--text-primary);
}

.custom-select-arrow {
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.custom-select.open .custom-select-arrow {
    transform: rotate(180deg);
    color: var(--accent-primary);
}

.custom-select-options {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    margin-bottom: 4px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-fast);
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.custom-select.open .custom-select-options {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.custom-select-option {
    padding: 10px 14px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.custom-select-option:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--text-primary);
}

.custom-select-option.selected {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

.custom-select-option.selected::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-legal-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-legal-links a {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-legal-links a:hover {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal-links {
        justify-content: center;
    }
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-lg);
    border: 3px solid var(--border-subtle);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.loading-filename {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-tertiary);
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Responsive */
@media (max-width: 640px) {
    .hero {
        padding: var(--space-xl) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .tabs {
        flex-direction: column;
        width: 100%;
    }
    
    .tab {
        justify-content: center;
    }
    
    .upload-zone {
        padding: var(--space-xl);
    }
    
    .result-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .result-icon {
        margin: 0 auto;
    }
    
    .result-stats {
        justify-content: center;
    }
    
    .result-actions {
        justify-content: center;
    }
}

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

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

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

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

/* Selection */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}

/* ===================================
   Legal Pages (Terms, Privacy, Cookies)
   =================================== */

.legal-section {
    padding: var(--space-3xl) var(--space-lg);
    max-width: 800px;
    margin: 0 auto;
}

.legal-container {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

.legal-updated {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
}

.legal-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.legal-block {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.legal-block h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.legal-block p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.legal-subblock {
    margin-top: var(--space-md);
    padding-left: var(--space-lg);
    border-left: 2px solid var(--border-accent);
}

.legal-subblock h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.legal-subblock p {
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 640px) {
    .legal-section {
        padding: var(--space-xl) var(--space-md);
    }
    
    .legal-container {
        padding: var(--space-lg);
    }
    
    .legal-block h2 {
        font-size: 1.125rem;
    }
}