:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-primary: #58a6ff;
    --accent-secondary: #1f6feb;
    --accent-purple: #a371f7;
    --border-color: #30363d;
    --terminal-red: #ff6b6b;
    --terminal-yellow: #ffd93d;
    --terminal-green: #6bcb77;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-purple);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    padding: 0 24px;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.github-link:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Main content */
main {
    padding-top: 64px;
}

/* Hero */
.hero {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    background: radial-gradient(ellipse at top, rgba(88, 166, 255, 0.1) 0%, transparent 50%);
}

.terminal-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    max-width: 800px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.terminal-dot.red { background: var(--terminal-red); }
.terminal-dot.yellow { background: var(--terminal-yellow); }
.terminal-dot.green { background: var(--terminal-green); }

.terminal-title {
    margin-left: auto;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.ascii-art-container {
    padding: 32px 24px;
    text-align: center;
}

.logo-text {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    letter-spacing: -2px;
    margin: 0;
}

.logo-git {
    color: #ffffff;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.logo-tastic {
    color: #3fb950;
    text-shadow: 0 0 20px rgba(63, 185, 80, 0.5);
}

.tagline {
    text-align: center;
    padding: 0 24px 32px;
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Features */
.features {
    padding: 96px 24px;
    background: var(--bg-secondary);
}

.features h2,
.install h2,
.cta h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 48px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    transition: transform 0.2s, border-color 0.2s;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Install */
.install {
    padding: 96px 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.install-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.install-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    position: relative;
}

.install-card.featured {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px rgba(88, 166, 255, 0.1);
}

.install-badge {
    position: absolute;
    top: -12px;
    left: 24px;
    background: var(--accent-secondary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.install-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.install-requires {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.install-steps {
    margin-bottom: 24px;
}

.install-steps li {
    margin-bottom: 12px;
    padding-left: 8px;
    color: var(--text-secondary);
}

.install-steps a {
    color: var(--accent-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent-purple);
    color: white;
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* CTA */
.cta {
    padding: 96px 24px;
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-secondary), var(--bg-primary));
}

.cta p {
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-bottom: 32px;
}

/* Footer */
footer {
    padding: 48px 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

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

.footer-content a {
    color: var(--accent-primary);
    font-weight: 500;
}

.license {
    margin-top: 8px;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links a:not(.github-link) {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 80px 24px 48px;
    }
    
    .features h2,
    .install h2,
    .cta h2 {
        font-size: 2rem;
    }
    
    .install-options {
        grid-template-columns: 1fr;
    }
}