:root {
    --bg-dark: #09090b;
    --bg-surface: #121217;
    --bg-surface-elevated: #1a1a24;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-success: #10b981;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(9, 9, 11, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.brand-name {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.main-nav a:not(.nav-cta) {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.main-nav a:not(.nav-cta):hover {
    color: var(--text-main);
}

.nav-cta {
    background: var(--text-main);
    color: var(--bg-dark);
    padding: 8px 16px;
    border-radius: 99px;
    font-size: 0.9rem;
    font-weight: 600;
}

.nav-cta:hover {
    background: #e2e8f0;
    transform: translateY(-1px);
}

/* Typography & Buttons */
.text-gradient {
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-highlight);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.05rem;
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 99px;
    margin-bottom: 24px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-success);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.status-text {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-success);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* App Window (Mockup) */
.app-window {
    background: var(--bg-surface);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255,255,255,0.1);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.5s ease;
}

.app-window:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.window-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    display: flex;
    align-items: center;
}

.window-controls {
    display: flex;
    gap: 8px;
    margin-right: 16px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.control.close { background: #ff5f56; }
.control.minimize { background: #ffbd2e; }
.control.maximize { background: #27c93f; }

.window-title {
    flex: 1;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-right: 48px; /* Balance controls */
}

.window-body {
    padding: 24px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-main);
    line-height: 1.5;
}

.prompt { color: var(--accent-primary); }
.cmd { color: var(--text-main); font-weight: 500; }
.terminal-output { color: var(--text-muted); margin-top: 4px; }
.text-success { color: var(--accent-success); }
.cursor {
    animation: blink 1s step-end infinite;
}

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

/* General Sections */
.feature-section {
    padding: 100px 0;
}

.feature-section.alt-bg {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.center-align {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.feature-grid.three-col {
    grid-template-columns: 1fr 1fr 1fr;
}

.feature-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-highlight);
    transform: translateY(-4px);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* Roadmap Timeline */
.roadmap-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding-left: 32px;
    border-left: 2px solid var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}
.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -41px;
    top: 4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.timeline-item.completed .timeline-marker {
    background: var(--accent-success);
    border-color: var(--accent-success);
}

.timeline-item.active .timeline-marker {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.timeline-content h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.timeline-item.completed .timeline-content h4 {
    color: var(--accent-success);
}
.timeline-item.active .timeline-content h4 {
    color: var(--accent-primary);
}

.timeline-content p {
    color: var(--text-muted);
}

/* CTA Section */
.cta-section {
    padding: 120px 0;
    text-align: center;
}

.cta-box {
    background: linear-gradient(180deg, var(--bg-surface-elevated) 0%, var(--bg-surface) 100%);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-lg);
    padding: 80px 40px;
}

.cta-box h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-box p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

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

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    width: 24px;
    height: 24px;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 24px;
}

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

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

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        margin: 0 auto 40px;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .main-nav {
        display: none;
    }
    
    .feature-grid, .feature-grid.three-col {
        grid-template-columns: 1fr;
    }
}