:root {
    --primary-color: #1DB954;
    --primary-dark: #1ed760;
    --primary-light: #1fdf64;
    --secondary-color: #191414;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #6b6b6b;
    --background-dark: #121212;
    --background-darker: #000000;
    --background-light: #1a1a1a;
    --background-lighter: #282828;
    --border-color: #333333;
    --gradient-primary: linear-gradient(135deg, #1DB954 0%, #1ed760 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(180deg, #000000 0%, #121212 100%);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.5);
    --glow-green: 0 0 20px rgba(29, 185, 84, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

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

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(29, 185, 84, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
    border-bottom-color: var(--primary-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.nav-brand:hover {
    transform: scale(1.05);
}

.logo {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 10px rgba(29, 185, 84, 0.5));
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    padding: 5px 0;
}

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

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

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

.github-link {
    background: var(--gradient-primary);
    color: white !important;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--glow-green);
}

.github-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(29, 185, 84, 0.5);
}

.github-link:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active {
    transform: rotate(90deg);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Language Selector */
.language-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
}

/* Language Selector in Navigation */
.nav-menu .language-selector {
    display: flex;
    gap: 8px;
    margin-bottom: 0;
    align-items: center;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Hero section language selector - larger flags */
.hero-text .lang-btn .flag-icon {
    width: 20px;
    height: 15px;
}

/* Language buttons in navigation */
.nav-menu .lang-btn {
    padding: 8px;
    font-size: 13px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    border-radius: 6px;
}

.flag-icon {
    width: 18px;
    height: 13px;
    border-radius: 2px;
    flex-shrink: 0;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.nav-menu .lang-btn:hover {
    background: rgba(29, 185, 84, 0.2);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.nav-menu .lang-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Language Content */
.lang-content {
    transition: opacity 0.3s ease;
}

/* Disclaimer */
.disclaimer {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), rgba(255, 152, 0, 0.1));
    border: 1px solid rgba(255, 193, 7, 0.4);
    border-left: 4px solid #ffc107;
    border-radius: 12px;
    padding: 20px;
    margin: 30px 0;
    font-size: 14px;
    line-height: 1.6;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.1);
    position: relative;
    overflow: hidden;
}

.disclaimer::before {
    content: '⚠️';
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 24px;
    opacity: 0.3;
}

.disclaimer p {
    margin: 0;
    color: var(--text-secondary);
}

.disclaimer strong {
    color: #ffd54f;
    font-weight: 700;
}

/* Language Toggle for Documentation */
.language-toggle {
    text-align: center;
    margin-bottom: 20px;
}

.language-toggle a {
    color: var(--primary-color);
    text-decoration: none;
    padding: 8px 16px;
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    display: inline-block;
    transition: all 0.3s ease;
}

.language-toggle a:hover {
    background: var(--primary-color);
    color: white;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    background: linear-gradient(135deg, #000000 0%, #0a0f0d 50%, #000000 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(29, 185, 84, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(29, 185, 84, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(102, 126, 234, 0.05) 0%, transparent 60%);
    pointer-events: none;
    animation: ambient-pulse 15s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, rgba(29, 185, 84, 0.4), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(29, 185, 84, 0.3), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(29, 185, 84, 0.2), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(29, 185, 84, 0.3), transparent),
        radial-gradient(2px 2px at 90% 60%, rgba(29, 185, 84, 0.2), transparent),
        radial-gradient(1px 1px at 33% 50%, rgba(29, 185, 84, 0.3), transparent),
        radial-gradient(1px 1px at 70% 30%, rgba(29, 185, 84, 0.2), transparent);
    background-size: 200% 200%;
    pointer-events: none;
    animation: particles-float 20s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes particles-float {
    0%, 100% {
        background-position: 0% 0%, 100% 100%, 50% 50%, 100% 0%, 0% 100%, 50% 0%, 100% 50%;
    }
    50% {
        background-position: 100% 100%, 0% 0%, 100% 0%, 50% 100%, 100% 0%, 0% 100%, 0% 0%;
    }
}

@keyframes ambient-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.hero-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 20px 50px;
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-text {
    flex: 1;
    max-width: 600px;
    text-align: center;
    animation: fade-in-up 1s ease-out;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: clamp(2.2rem, 5.5vw, 3.8rem);
    font-weight: 700;
    line-height: 0.9;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    text-shadow: 0 0 40px rgba(29, 185, 84, 0.3);
}

.title-prefix {
    font-size: 0.35em;
    font-weight: 500;
    opacity: 0.8;
    display: block;
    margin-bottom: -1.5em;
    line-height: 0.5;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.gradient-text {
    background: linear-gradient(135deg, #1DB954 0%, #1ed760 50%, #1fdf64 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(29, 185, 84, 0.5));
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% {
        filter: drop-shadow(0 0 20px rgba(29, 185, 84, 0.5)) brightness(1);
    }
    50% {
        filter: drop-shadow(0 0 30px rgba(29, 185, 84, 0.7)) brightness(1.2);
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0.6;
    animation: bounce 2s ease-in-out infinite;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-indicator span {
    color: var(--primary-color);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.scroll-indicator::after {
    content: '↓';
    font-size: 24px;
    color: var(--primary-color);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(29, 185, 84, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(29, 185, 84, 0.5);
}

.btn-secondary {
    background: rgba(29, 185, 84, 0.1);
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(29, 185, 84, 0.2);
    border-color: var(--primary-light);
    color: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(29, 185, 84, 0.2);
}

/* Hero Visual */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

.hero-screenshot {
    width: 100%;
    max-width: 600px;
    position: relative;
    animation: float 6s ease-in-out infinite;
    filter: drop-shadow(0 0 40px rgba(29, 185, 84, 0.3));
}

.main-screenshot {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(29, 185, 84, 0.2);
    transition: all 0.4s ease;
}

.hero-screenshot:hover .main-screenshot {
    transform: scale(1.03);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
    border-color: var(--primary-color);
}

.screenshot-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(29, 185, 84, 0.4) 0%, transparent 70%);
    filter: blur(60px);
    z-index: -1;
    opacity: 0.7;
    animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-25px);
    }
}

@keyframes glow-pulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.9;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.jukebox-preview {
    width: 100%;
    max-width: 500px;
    perspective: 1000px;
}

.preview-screen {
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 20px;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.preview-screen:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.screen-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.screen-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.red { background: #ff5f56; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #27ca3f; }

.screen-title {
    font-weight: 600;
    color: var(--primary-color);
}

.now-playing {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(29, 185, 84, 0.1);
    border-radius: 10px;
}

.album-art {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.album-art::after {
    content: '🎵';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
}

.track-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.track-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.track-artist {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.visualizer {
    display: flex;
    gap: 4px;
    height: 40px;
    align-items: end;
    justify-content: center;
}

.bar {
    width: 8px;
    background: var(--gradient-primary);
    border-radius: 4px 4px 0 0;
    animation: visualizer 1.5s ease-in-out infinite;
}

.bar:nth-child(1) { height: 20%; animation-delay: 0s; }
.bar:nth-child(2) { height: 60%; animation-delay: 0.1s; }
.bar:nth-child(3) { height: 40%; animation-delay: 0.2s; }
.bar:nth-child(4) { height: 80%; animation-delay: 0.3s; }
.bar:nth-child(5) { height: 30%; animation-delay: 0.4s; }
.bar:nth-child(6) { height: 70%; animation-delay: 0.5s; }
.bar:nth-child(7) { height: 50%; animation-delay: 0.6s; }
.bar:nth-child(8) { height: 90%; animation-delay: 0.7s; }

@keyframes visualizer {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.3); }
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--background-dark) 0%, var(--background-light) 50%, var(--background-dark) 100%);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.5;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
}

.feature-card {
    background: linear-gradient(145deg, var(--background-light), var(--background-dark));
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(29, 185, 84, 0.1), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(29, 185, 84, 0.2);
}

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

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    display: block;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotateY(10deg);
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

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

/* Demo Section */
.demo {
    padding: 120px 0;
    background: var(--background-dark);
    position: relative;
    overflow: hidden;
}

.demo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.5;
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

/* Screenshot Gallery */
.demo-gallery {
    display: flex;
    flex-direction: column;
    gap: 25px;
    position: relative;
}

.demo-gallery::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(29, 185, 84, 0.1), transparent 70%);
    filter: blur(60px);
    pointer-events: none;
    animation: gallery-glow 8s ease-in-out infinite;
}

@keyframes gallery-glow {
    0%, 100% {
        opacity: 0.5;
        transform: translate(0, 0);
    }
    50% {
        opacity: 0.8;
        transform: translate(30px, 30px);
    }
}

.gallery-main {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
    background: var(--background-darker);
    border: 1px solid rgba(29, 185, 84, 0.1);
}

.gallery-main .screenshot {
    width: 100%;
    height: auto;
    display: none;
    transition: all 0.5s ease;
}

.gallery-main .screenshot.active {
    display: block;
    animation: screenshot-fade-in 0.5s ease;
}

@keyframes screenshot-fade-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.gallery-main .screenshot.active {
    display: block;
}

.gallery-thumbnails {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.thumbnail {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    background: var(--background-light);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.thumbnail:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 20px rgba(29, 185, 84, 0.2);
}

.thumbnail.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 25px rgba(29, 185, 84, 0.5);
    transform: scale(1.05);
}

.thumbnail img {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0.6;
    transition: all 0.3s ease;
    filter: grayscale(20%);
}

.thumbnail:hover img,
.thumbnail.active img {
    opacity: 1;
    filter: grayscale(0%);
}

.thumbnail span {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 10px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    color: white;
    font-size: 0.85rem;
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.demo-screenshot {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.screenshot {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.demo-screenshot:hover .screenshot-overlay {
    opacity: 1;
}

.play-button {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.play-button:hover {
    transform: scale(1.1);
    background: var(--primary-dark);
}

.demo-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.demo-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.demo-feature-icon {
    font-size: 2rem;
    min-width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.demo-feature-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.demo-feature-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Setup Section */
.setup {
    padding: 100px 0;
    background: var(--background-light);
}

.setup-steps {
    display: grid;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

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

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
}

.code-block {
    background: var(--background-darker);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 15px;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    position: relative;
    overflow-x: auto;
}

.code-block code {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 5px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

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

.setup-note {
    background: var(--background-dark);
    border: 1px solid var(--primary-color);
    border-radius: 15px;
    padding: 20px;
    margin-top: 40px;
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.note-icon {
    font-size: 1.5rem;
    min-width: 30px;
}

.note-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

.note-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.note-content a:hover {
    text-decoration: underline;
}

/* Support Section */
.support-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--background-color) 0%, var(--background-darker) 100%);
}

.support-content {
    max-width: 900px;
    margin: 0 auto;
}

.support-text {
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-secondary);
    font-size: 1.1em;
    line-height: 1.8;
}

.support-text ul {
    text-align: left;
    max-width: 600px;
    margin: 30px auto;
    list-style: none;
    padding: 0;
}

.support-text li {
    margin: 15px 0;
    padding-left: 10px;
    font-size: 1em;
}

.support-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.support-card {
    background: linear-gradient(135deg, var(--background-lighter), var(--background-color));
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.support-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(29, 185, 84, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.support-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 60px rgba(29, 185, 84, 0.3);
}

.support-card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.2), rgba(29, 185, 84, 0.05));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: all 0.4s ease;
}

.support-card:hover .support-card-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 40px rgba(29, 185, 84, 0.4);
}

.support-card h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: var(--text-color);
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.support-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: #000;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.github-sponsors:hover .support-card-icon {
    color: #ea4aaa;
}

.github-sponsors:hover {
    border-color: #ea4aaa;
    box-shadow: 0 20px 60px rgba(234, 74, 170, 0.3);
}

.kofi:hover .support-card-icon {
    color: #13C3FF;
}

.kofi:hover {
    border-color: #13C3FF;
    box-shadow: 0 20px 60px rgba(19, 195, 255, 0.3);
}

.paypal:hover .support-card-icon {
    color: #00457C;
}

.paypal:hover {
    border-color: #0070BA;
    box-shadow: 0 20px 60px rgba(0, 112, 186, 0.3);
}

.support-message {
    text-align: center;
    margin-top: 50px;
    padding: 30px;
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.1), rgba(29, 185, 84, 0.05));
    border-radius: 15px;
    border: 1px solid rgba(29, 185, 84, 0.2);
}

.support-message p {
    font-size: 1.1em;
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

/* Support Button in Navbar */
.support-btn {
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.2), rgba(29, 185, 84, 0.1));
    border: 1px solid rgba(29, 185, 84, 0.3);
    border-radius: 8px;
    padding: 8px 16px !important;
    transition: all 0.3s ease;
}

.support-btn:hover {
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.3), rgba(29, 185, 84, 0.15));
    border-color: rgba(29, 185, 84, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(29, 185, 84, 0.3);
}

.support-btn svg {
    color: #ea4aaa;
    filter: drop-shadow(0 0 8px rgba(234, 74, 170, 0.5));
}

/* Documentation Section */
.docs {
    padding: 100px 0;
    background: var(--background-dark);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.doc-card {
    background: var(--background-light);
    padding: 30px;
    border-radius: 20px;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.doc-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(29, 185, 84, 0.1);
}

.doc-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

.doc-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.doc-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.doc-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.doc-link:hover {
    gap: 10px;
}

/* Footer */
.footer {
    padding: 60px 0 30px;
    background: var(--background-darker);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Support Links Styling */
.support-link {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    margin: 2px 0;
    border-radius: 6px;
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.1), rgba(29, 185, 84, 0.05));
    border: 1px solid rgba(29, 185, 84, 0.2);
    transition: all 0.3s ease;
}

.support-link:hover {
    background: linear-gradient(135deg, rgba(29, 185, 84, 0.2), rgba(29, 185, 84, 0.1));
    border-color: rgba(29, 185, 84, 0.4);
    transform: translateX(5px);
    box-shadow: 0 0 20px rgba(29, 185, 84, 0.3);
}

.support-link svg {
    flex-shrink: 0;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--background-darker);
        flex-direction: column;
        padding: 20px;
        border-top: 1px solid var(--border-color);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu .language-selector {
        justify-content: center;
        margin: 15px 0;
        padding: 10px 0;
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
        padding: 80px 0 30px;
    }
    
    .hero-text {
        margin-bottom: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .step {
        flex-direction: column;
        gap: 15px;
    }
    
    .features-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
}

/* ============================================ */
/* DOCUMENTATION STYLES */
/* ============================================ */

/* Documentation Page Layout */
.doc-sidebar {
    position: fixed;
    left: 0;
    top: 70px;
    width: 280px;
    height: calc(100vh - 70px);
    background: #141414;
    padding: 40px 0;
    overflow-y: auto;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 100;
}

.doc-sidebar::-webkit-scrollbar {
    width: 6px;
}

.doc-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.doc-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.doc-sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.doc-sidebar h3 {
    color: #6b6b6b;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    padding: 0 24px;
}

.doc-sidebar ul {
    list-style: none;
    margin: 0 0 32px 0;
    padding: 0;
}

.doc-sidebar li {
    margin-bottom: 2px;
}

.doc-sidebar a {
    color: #a0a0a0;
    text-decoration: none;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    font-size: 15px;
    font-weight: 500;
    position: relative;
}

.doc-sidebar a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.doc-sidebar a:hover {
    background: rgba(29, 185, 84, 0.08);
    color: var(--text-primary);
}

.doc-sidebar a.active {
    background: rgba(29, 185, 84, 0.12);
    color: var(--primary-color);
}

.doc-sidebar a.active::before {
    transform: scaleY(1);
}

.doc-sidebar a .icon {
    font-size: 20px;
    opacity: 0.9;
}

/* Main Documentation Content */
.doc-main {
    margin-left: 280px;
    flex: 1;
    padding: 60px 60px 60px;
    max-width: 1000px;
}

.doc-container {
    width: 100%;
}

.doc-header {
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.doc-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 16px;
    letter-spacing: -0.02em;
}

.doc-header p {
    font-size: 18px;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 400;
}

.doc-content {
    background: #141414;
    padding: 48px;
    border-radius: 16px;
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.doc-content h2 {
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    padding-left: 16px;
    border-left: 4px solid var(--primary-color);
    letter-spacing: -0.01em;
}

.doc-content h2:first-child {
    margin-top: 0;
}

.doc-content h3 {
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.doc-content h4 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.doc-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 16px;
}

.doc-content ul, .doc-content ol {
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 20px 0 20px 24px;
}

.doc-content li {
    margin-bottom: 12px;
}

.doc-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Documentation Alert Boxes */
.warning, .info, .success, .error {
    padding: 20px 24px;
    border-radius: 12px;
    margin: 24px 0;
    border-left: 4px solid;
    font-size: 15px;
    line-height: 1.7;
}

.warning {
    background: rgba(255, 193, 7, 0.12);
    border-color: #ffc107;
    color: #ffdb4d;
}

.info {
    background: rgba(13, 202, 240, 0.12);
    border-color: #0dcaf0;
    color: #57daf5;
}

.success {
    background: rgba(29, 185, 84, 0.12);
    border-color: var(--primary-color);
    color: #1ed760;
}

.error {
    background: rgba(220, 53, 69, 0.12);
    border-color: #dc3545;
    color: #ff6b7a;
}

/* Code Blocks in Documentation */
.doc-content pre {
    background: #0a0a0a;
    padding: 24px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 14px;
    line-height: 1.6;
}

.doc-content code {
    color: var(--primary-color);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;
    font-size: 14px;
}

.doc-content pre code {
    color: #e0e0e0;
}

/* Troubleshooting Items */
.troubleshoot-item {
    background: #1a1a1a;
    padding: 28px;
    border-radius: 12px;
    margin: 24px 0;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.troubleshoot-item:hover {
    background: rgba(29, 185, 84, 0.05);
    transform: translateX(4px);
}

.troubleshoot-item h4 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.troubleshoot-item p {
    margin-bottom: 16px;
}

.troubleshoot-item ul {
    margin-left: 20px;
}

/* Diagnostic Checklist */
.diagnostic-checklist {
    background: #1a1a1a;
    padding: 28px;
    border-radius: 12px;
    margin: 24px 0;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.diagnostic-checklist h4 {
    color: var(--text-primary);
    font-size: 18px;
    margin-bottom: 20px;
    font-weight: 600;
}

.diagnostic-checklist p {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    padding: 8px;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.diagnostic-checklist p:hover {
    background: rgba(255, 255, 255, 0.03);
}

.diagnostic-checklist input[type="checkbox"] {
    appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid #6b6b6b;
    border-radius: 4px;
    margin-right: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    flex-shrink: 0;
}

.diagnostic-checklist input[type="checkbox"]:hover {
    border-color: var(--primary-color);
}

.diagnostic-checklist input[type="checkbox"]:checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.diagnostic-checklist input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.diagnostic-checklist label {
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 15px;
}

/* Status Indicators */
.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-good { 
    background-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(29, 185, 84, 0.5);
}

.status-warning { 
    background-color: #ffc107;
    box-shadow: 0 0 8px rgba(255, 193, 7, 0.5);
}

.status-error { 
    background-color: #dc3545;
    box-shadow: 0 0 8px rgba(220, 53, 69, 0.5);
}

/* File Structure Display */
.file-structure {
    font-family: 'SF Mono', Monaco, monospace;
    white-space: pre;
    overflow-x: auto;
    padding: 20px;
    background: #0a0a0a;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    margin: 20px 0;
}

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

.file {
    color: var(--text-secondary);
}

/* Documentation Responsive */
@media (max-width: 1200px) {
    .doc-main {
        padding: 60px 40px 60px;
    }
}

@media (max-width: 768px) {
    .doc-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1001;
    }
    
    .doc-sidebar.open {
        transform: translateX(0);
    }
    
    .doc-main {
        margin-left: 0;
        padding: 40px 20px 40px;
    }
    
    .doc-header h1 {
        font-size: 36px;
    }
    
    .doc-content {
        padding: 32px 24px;
    }
    
    .doc-content h2 {
        font-size: 24px;
    }
}