/* KAIN Website Styles - Dark Mode */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-accent: #a78bfa;
    
    --accent-purple: #a78bfa;
    --accent-blue: #60a5fa;
    --accent-cyan: #22d3ee;
    --accent-green: #4ade80;
    
    --gradient-purple: linear-gradient(135deg, #a78bfa 0%, #6366f1 100%);
    --gradient-hero: linear-gradient(180deg, #12121a 0%, #0a0a0f 100%);
    
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --shadow-glow: 0 0 60px rgba(167, 139, 250, 0.15);
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
}

#root {
    min-height: 100vh;
}

/* App Container */
.app {
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 4rem;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.8);
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-purple);
    text-decoration: none;
    letter-spacing: 0.1em;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 8rem 2rem;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-logo {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--accent-purple);
    white-space: pre;
    line-height: 1.2;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.hero-tagline {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-purple);
    color: white;
    box-shadow: 0 4px 20px rgba(167, 139, 250, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(167, 139, 250, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

/* Features Section */
.features {
    padding: 6rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--accent-purple);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* Code Section */
.code-section {
    padding: 6rem 4rem;
    background: var(--bg-secondary);
}

.code-block {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    max-width: 800px;
    margin: 0 auto;
    overflow-x: auto;
}

.code-block pre {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.7;
}

/* Syntax Highlighting */
.keyword { color: var(--accent-purple); }
.function { color: var(--accent-blue); }
.string { color: var(--accent-green); }
.comment { color: var(--text-secondary); font-style: italic; }
.type { color: var(--accent-cyan); }

/* Footer */
.footer {
    padding: 3rem 4rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--accent-purple);
}

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

.built-with {
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.built-with span {
    color: var(--accent-purple);
}

/* Fallback styling */
.fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
}

.fallback h1 {
    font-size: 4rem;
    background: var(--gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.fallback .error {
    color: #f87171;
    margin-top: 2rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 1rem 2rem;
    }
    
    .hero {
        padding: 4rem 1.5rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-logo {
        font-size: 0.4rem;
    }
    
    .features, .code-section, .footer {
        padding: 3rem 1.5rem;
    }
}