:root {
    --bg-dark: #050505;
    --bg-panel: rgba(15, 15, 20, 0.6);
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --neon-blue: #00f0ff;
    --neon-purple: #bc13fe;
    --neon-pink: #ff003c;
    --border-glow: rgba(0, 240, 255, 0.3);
}

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

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

/* Particles Background */
#particles-js {
    position: fixed;
    width: 100vw;
    height: 100vh;
    top: 0;
    left: 0;
    z-index: -1;
    background: radial-gradient(circle at center, #0a0a14 0%, #000000 100%);
}

/* Typography & Utilities */
h1, h2, h3, h4 {
    font-family: 'Syncopate', sans-serif;
    text-transform: uppercase;
}

.gradient-text {
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple), var(--neon-pink));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-flow 3s linear infinite;
}

@keyframes gradient-flow {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    position: absolute;
    width: 100%;
    z-index: 100;
}

.logo {
    font-family: 'Syncopate', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.glow-icon {
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
    margin-right: 10px;
}

.github-btn {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.github-btn:hover {
    background: rgba(255,255,255,0.1);
    box-shadow: 0 0 15px rgba(255,255,255,0.2);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 5rem;
    position: relative;
}

.hero-content {
    max-width: 900px;
    z-index: 10;
}

.version-badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--neon-blue);
    color: var(--neon-blue);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    box-shadow: 0 0 15px var(--border-glow);
}

.main-title {
    font-size: 4.5rem;
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 3rem auto;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 5rem;
}

.btn {
    padding: 1.2rem 2.5rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, var(--neon-blue), var(--neon-purple));
    color: #fff;
    border: none;
}

.pulse-effect {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.7); }
    70% { box-shadow: 0 0 0 20px rgba(0, 240, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0); }
}

.btn-secondary {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

/* Hero Stats */
.stats-row {
    display: flex;
    justify-content: center;
    gap: 3rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 3rem;
}

.stat-box {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    min-width: 180px;
}

.stat-number {
    font-family: 'Syncopate', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--neon-blue);
    text-shadow: 0 0 15px var(--border-glow);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem 2rem;
}

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

.section-header.center {
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    letter-spacing: -1px;
    margin-bottom: 1rem;
}

.header-line {
    height: 3px;
    width: 60px;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
}

.header-line.center {
    margin: 0 auto;
}

/* Dataset Section */
.dataset-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.dataset-card {
    padding: 3rem;
    border-top: 2px solid var(--neon-blue);
}

.card-icon {
    font-size: 3rem;
    color: var(--neon-blue);
    margin-bottom: 1.5rem;
}

.dataset-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.dataset-card p {
    color: var(--text-muted);
}

/* Architecture Pipeline */
.pipeline-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 4rem;
    border-bottom: 2px solid var(--neon-purple);
}

.pipeline-step {
    flex: 1;
    text-align: center;
}

.step-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(0,0,0,0.5);
    border: 2px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem auto;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

.step-circle.highlight {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    box-shadow: 0 0 20px rgba(255, 0, 60, 0.4);
}

.pipeline-step:hover .step-circle {
    border-color: var(--neon-blue);
    color: var(--neon-blue);
    transform: scale(1.1);
}

.pipeline-step h4 {
    margin-bottom: 0.5rem;
}

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

.pipeline-arrow {
    width: 50px;
    height: 2px;
    background: rgba(255,255,255,0.2);
    margin-top: 40px;
    position: relative;
}

.pipeline-arrow::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 5px solid rgba(255,255,255,0.2);
}

/* Signs Grid */
.signs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 2rem;
}

.sign-card {
    padding: 2rem;
    text-align: center;
    cursor: pointer;
}

.sign-card.highlight-card {
    border: 1px solid var(--neon-pink);
    box-shadow: inset 0 0 20px rgba(255, 0, 60, 0.1);
}

.sign-card .emoji {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(255,255,255,0.2));
}

.sign-card h4 {
    margin-bottom: 0.5rem;
    color: #fff;
}

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

/* Footer */
footer {
    background: rgba(0,0,0,0.8);
    padding: 4rem 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
}

.footer-content h3 {
    font-size: 1.5rem;
    color: var(--neon-blue);
    margin-bottom: 1rem;
}

.social-links {
    margin: 2rem 0;
}

.social-links a {
    color: var(--text-muted);
    font-size: 1.5rem;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #fff;
}

.copyright {
    color: rgba(255,255,255,0.3);
    font-size: 0.9rem;
}