/**
 * ============================================================================
 * Speech Recognition Dataset - Stylesheet
 * ============================================================================
 * 
 * Project: Speech Recognition Dataset
 * Description: Audio speech recognition dataset with labeled speech samples 
 *              for training speech-to-text and voice recognition models.
 * 
 * ============================================================================
 * DEVELOPER INFORMATION
 * ============================================================================
 * Website: https://rskworld.in
 * Founded by: Molla Samser
 * Designer & Tester: Rima Khatun
 * Email: help@rskworld.in
 * Support: support@rskworld.in
 * Phone: +91 93305 39277
 * Address: Nutanhat, Mongolkote, Purba Burdwan, West Bengal, India, 713147
 * 
 * ============================================================================
 * COPYRIGHT NOTICE
 * ============================================================================
 * © 2026 RSK World. All rights reserved.
 * This dataset is provided for educational and research purposes.
 * 
 * ============================================================================
 */

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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-border: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-3: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-4: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-5: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-6: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
}

/* Light Theme Variables */
[data-theme="light"] {
    --dark-bg: #f8fafc;
    --dark-surface: #ffffff;
    --dark-border: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.1);
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.sound-bars {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    height: 50px;
    gap: 4px;
    margin-bottom: 1rem;
}

.sound-bars span {
    width: 6px;
    background: var(--gradient-1);
    border-radius: 3px;
    animation: soundBar 1s ease-in-out infinite;
}

.sound-bars span:nth-child(1) { animation-delay: 0s; height: 20px; }
.sound-bars span:nth-child(2) { animation-delay: 0.1s; height: 35px; }
.sound-bars span:nth-child(3) { animation-delay: 0.2s; height: 25px; }
.sound-bars span:nth-child(4) { animation-delay: 0.3s; height: 40px; }
.sound-bars span:nth-child(5) { animation-delay: 0.4s; height: 30px; }

@keyframes soundBar {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.5); }
}

.loader p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Custom Cursor */
.cursor, .cursor-follower {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    mix-blend-mode: difference;
}

.cursor {
    width: 10px;
    height: 10px;
    background: white;
    transition: transform 0.1s;
}

.cursor-follower {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    transition: transform 0.3s, width 0.3s, height 0.3s;
}

.cursor-follower.hover {
    width: 60px;
    height: 60px;
    border-color: var(--primary-color);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Animated Background */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.sound-wave {
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: wave 20s infinite;
}

.wave-1 {
    top: -50%;
    left: -50%;
    animation-delay: 0s;
}

.wave-2 {
    top: -30%;
    left: -30%;
    animation-delay: 7s;
}

.wave-3 {
    top: -70%;
    left: -70%;
    animation-delay: 14s;
}

@keyframes wave {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.2) rotate(180deg);
        opacity: 0.1;
    }
}

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--dark-border);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.nav-brand i {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.download-btn {
    background: var(--gradient-1);
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    color: white !important;
}

.download-btn::after {
    display: none;
}

/* Navigation Actions */
.nav-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
}

.theme-toggle, .search-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.theme-toggle:hover, .search-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

/* Search Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
}

.search-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.search-container {
    width: 100%;
    max-width: 600px;
    background: var(--dark-surface);
    border-radius: 16px;
    border: 1px solid var(--dark-border);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.search-header {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--dark-border);
    gap: 1rem;
}

.search-header i {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.search-header input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    outline: none;
}

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

.close-search {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s;
}

.close-search:hover {
    color: var(--accent-color);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem;
}

.search-hint {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.search-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--dark-bg);
    border-radius: 20px;
    font-size: 0.85rem;
    margin: 0.25rem;
    cursor: pointer;
    transition: all 0.3s;
}

.search-tag:hover {
    background: var(--primary-color);
    color: white;
}

.search-result-item {
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.search-result-item:hover {
    background: var(--dark-bg);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--dark-surface);
    border-bottom: 1px solid var(--dark-border);
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
    z-index: 999;
}

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

.mobile-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 5px;
    transition: all 0.3s;
}

.mobile-link:hover {
    background: var(--dark-border);
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 20px 60px;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Typing Animation */
.typing-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.typing-label {
    color: var(--text-muted);
}

.typing-text {
    color: var(--primary-color);
    font-weight: 600;
}

.typing-cursor {
    color: var(--primary-color);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--dark-border);
    transform: translateY(-2px);
}

.hero-visual {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.waveform-container {
    background: var(--dark-surface);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--dark-border);
}

.waveform-container canvas {
    width: 100%;
    height: 200px;
}

.audio-player-card {
    background: var(--dark-surface);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--dark-border);
}

.player-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 600;
}

.player-waveform {
    height: 80px;
    background: var(--dark-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.play-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.play-btn:hover {
    transform: scale(1.1);
}

.progress-container {
    flex: 1;
    height: 6px;
    background: var(--dark-bg);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-1);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s;
}

.time-display {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 0.5rem;
}

.volume-control i {
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.volume-control i:hover {
    color: var(--primary);
}

.volume-slider {
    width: 60px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--glass-bg);
    border-radius: 2px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 10px var(--primary);
}

.volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.player-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.speaker-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--primary-color);
    width: fit-content;
}

.transcript {
    color: var(--text-secondary);
    font-style: italic;
}

/* Section Styles */
section {
    padding: 80px 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Samples Section */
.samples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.sample-card {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}

.sample-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.sample-visual {
    height: 150px;
    background: var(--dark-bg);
    padding: 1rem;
}

.sample-waveform {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.sample-info {
    padding: 1.5rem;
}

.sample-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.sample-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.transcript {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-style: italic;
}

.sample-play-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--gradient-1);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.sample-play-btn:hover {
    transform: scale(1.05);
}

/* Statistics Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stats-card {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 2rem;
}

.stats-card.large {
    grid-column: span 2;
}

.stats-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.chart-container {
    height: 250px;
    position: relative;
}

.data-table-container {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 2rem;
}

.data-table-container h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--dark-border);
}

.data-table th {
    background: var(--dark-bg);
    color: var(--text-primary);
    font-weight: 600;
}

.data-table td {
    color: var(--text-secondary);
}

.data-table tr:hover {
    background: var(--dark-bg);
}

/* Category Badges */
.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.category-badge.greeting {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.category-badge.command {
    background: rgba(99, 102, 241, 0.2);
    color: #6366f1;
}

.category-badge.question {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

/* Technologies Section */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    transition: all 0.3s;
}

.tech-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.tech-icon {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.tech-icon.wav {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.tech-icon.mp3 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.tech-icon.numpy {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.tech-icon.librosa {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.tech-icon.tensorflow {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.tech-icon.pytorch {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

.tech-item span {
    font-weight: 600;
    color: var(--text-primary);
}

/* Code Section */
.code-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--dark-border);
}

.tab-btn {
    padding: 1rem 2rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
    position: relative;
    top: 1px;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.code-content {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    overflow: hidden;
}

.code-block {
    display: none;
    padding: 2rem;
    margin: 0;
    overflow-x: auto;
}

.code-block.active {
    display: block;
}

.code-block code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.code-block .comment {
    color: #64748b;
}

.code-block .keyword {
    color: #c792ea;
}

.code-block .string {
    color: #c3e88d;
}

.code-block .function {
    color: #82aaff;
}

.code-block .number {
    color: #f78c6c;
}

/* Spectrogram Section */
.spectrogram-section {
    background: var(--dark-surface);
    margin: 0 20px;
    border-radius: 24px;
    padding: 4rem 0;
}

.spectrogram-demo {
    max-width: 900px;
    margin: 0 auto;
}

.spectrogram-card {
    padding: 2rem;
}

.spectrogram-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.spectrogram-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.spectrogram-controls {
    display: flex;
    gap: 0.5rem;
}

.spec-btn {
    padding: 0.5rem 1rem;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
}

.spec-btn.active, .spec-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.spectrogram-canvas-container {
    background: var(--dark-bg);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    height: 300px;
}

.spectrogram-canvas-container canvas {
    width: 100%;
    height: 100%;
}

.spectrogram-info {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.info-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--dark-bg);
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.info-badge i {
    color: var(--primary-color);
}

/* Use Cases Section */
.use-cases-section {
    padding: 80px 20px;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.use-case-card {
    padding: 2rem;
    transition: all 0.3s;
}

.use-case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.use-case-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    margin-bottom: 1.5rem;
}

.gradient-bg-1 { background: var(--gradient-1); }
.gradient-bg-2 { background: var(--gradient-2); }
.gradient-bg-3 { background: var(--gradient-3); }
.gradient-bg-4 { background: var(--gradient-4); }
.gradient-bg-5 { background: var(--gradient-5); }
.gradient-bg-6 { background: var(--gradient-6); }

.use-case-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.use-case-card > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.use-case-features {
    list-style: none;
}

.use-case-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.use-case-features li i {
    color: var(--success-color);
    font-size: 0.8rem;
}

/* FAQ Section */
/* How to Use Section */
.how-to-use-section {
    padding: 6rem 0;
    background: var(--dark-bg);
}

.how-to-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.step-card {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    border-radius: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.step-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-xl);
}

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

.step-number {
    min-width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.step-content h3 i {
    color: var(--primary-color);
}

.step-content > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.code-example {
    background: rgba(15, 23, 42, 0.8);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--dark-border);
}

.code-example .code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(30, 41, 59, 0.5);
    border-bottom: 1px solid var(--dark-border);
}

.code-example .code-lang {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.code-example pre {
    margin: 0;
    padding: 1.5rem;
    overflow-x: auto;
    background: transparent;
}

.code-example code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.quick-start-card {
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 16px;
}

.quick-start-card h3 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quick-start-card h3 i {
    color: var(--primary-color);
    font-size: 2rem;
}

.commands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.command-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: rgba(15, 23, 42, 0.6);
    border-radius: 12px;
    border: 1px solid var(--dark-border);
    transition: all 0.3s ease;
}

.command-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.command-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.command-content h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.command-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    display: inline-block;
}

.resources-card {
    padding: 2.5rem;
    border-radius: 16px;
}

.resources-card h3 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.resources-card h3 i {
    color: var(--primary-color);
    font-size: 2rem;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.resource-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: rgba(15, 23, 42, 0.6);
    border-radius: 12px;
    border: 1px solid var(--dark-border);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.resource-link:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--primary-color);
}

.resource-link i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.resource-link span {
    font-weight: 500;
}

@media (max-width: 768px) {
    .step-card {
        flex-direction: column;
        gap: 1.5rem;
    }

    .step-number {
        align-self: flex-start;
    }

    .commands-grid,
    .resources-grid {
        grid-template-columns: 1fr;
    }

    .quick-start-card,
    .resources-card {
        padding: 1.5rem;
    }
}

.faq-section {
    padding: 80px 20px;
    background: var(--dark-surface);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--dark-bg);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
    text-align: left;
    transition: all 0.3s;
}

.faq-question:hover {
    background: var(--dark-surface);
}

.faq-question i {
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Newsletter Section */
.newsletter-section {
    padding: 40px 20px;
}

.newsletter-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 3rem;
    gap: 2rem;
    flex-wrap: wrap;
}

.newsletter-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
}

.newsletter-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.newsletter-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.newsletter-form {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    max-width: 400px;
}

.newsletter-form input {
    flex: 1;
    padding: 0.875rem 1.5rem;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.newsletter-form input:focus {
    border-color: var(--primary-color);
}

.newsletter-form button {
    padding: 0.875rem 1.5rem;
    background: var(--gradient-1);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    white-space: nowrap;
}

.newsletter-form button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Copy Code Button */
.copy-code-btn {
    margin-left: auto;
    padding: 0.75rem 1.5rem;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.copy-code-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.copy-code-btn.copied {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast i {
    color: var(--success-color);
    font-size: 1.2rem;
}

/* Download Section */
.download-section {
    background: var(--dark-surface);
    border-radius: 24px;
    margin: 0 20px;
}

.download-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 4rem;
    align-items: center;
}

.download-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.download-icon {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1rem;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

.download-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.info-item i {
    color: var(--primary-color);
}

.download-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-download {
    background: var(--gradient-1);
    color: white;
}

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

.file-preview {
    background: var(--dark-bg);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--dark-border);
}

.file-tree {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

.tree-item {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tree-item.folder {
    color: var(--primary-color);
}

.tree-item.file {
    color: var(--text-muted);
}

.indent-1 {
    padding-left: 1.5rem;
}

.indent-2 {
    padding-left: 3rem;
}

/* Footer */
.footer {
    background: var(--dark-surface);
    border-top: 1px solid var(--dark-border);
    padding: 4rem 20px 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--dark-border);
    text-align: center;
    color: var(--text-muted);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: all 0.3s;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    display: flex;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .nav-links {
        display: none;
    }

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

    .download-card {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .stats-card.large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .features-grid,
    .samples-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .nav-actions {
        display: none;
    }

    .newsletter-card {
        flex-direction: column;
        text-align: center;
    }

    .newsletter-content {
        flex-direction: column;
    }

    .newsletter-form {
        flex-direction: column;
        width: 100%;
        max-width: none;
    }

    .spectrogram-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .cursor, .cursor-follower {
        display: none;
    }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s, box-shadow 0.3s;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* Glow Effect */
.glow {
    position: relative;
}

.glow::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-1);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    filter: blur(20px);
    transition: opacity 0.3s;
}

.glow:hover::before {
    opacity: 0.5;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--dark-surface) 25%, var(--dark-border) 50%, var(--dark-surface) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--primary-color);
    color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--dark-border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}