/**
 * d6 consortium - Shared Stylesheet
 * Neon-Noir Design System
 * Based on ART_DIRECTION_BRIEF.md color palette
 */

:root {
    /* Brand Colors - From ART_DIRECTION_BRIEF.md */
    --deep-space: #0a0a0f;
    --neon-cyan: #00d9ff;
    --warning-red: #ff3366;
    --amber-glow: #ffb347;
    --industrial-gray: #4a5568;
    --electric-blue: #4a9eff;
    --text-light: #e0e0e0;
    --text-muted: #a0a0a0;
    --bg-dark: #1a1a1a;
    --bg-darker: #0f0f14;
    
    /* Typography */
    --font-display: 'Orbitron', 'Space Mono', monospace;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Effects */
    --glow-cyan: 0 0 20px rgba(0, 217, 255, 0.4), 0 0 40px rgba(0, 217, 255, 0.2);
    --glow-amber: 0 0 20px rgba(255, 179, 71, 0.4), 0 0 40px rgba(255, 179, 71, 0.2);
    --shadow-deep: 0 10px 40px rgba(0, 0, 0, 0.8);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.7;
    background: var(--deep-space);
    color: var(--text-light);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Subtle animated background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 179, 71, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: pulse 20s ease-in-out infinite;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: 0.03em;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
}

h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--neon-cyan);
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    color: var(--amber-glow);
    text-shadow: 0 0 10px rgba(255, 179, 71, 0.4);
    margin-bottom: var(--spacing-sm);
}

p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* Buttons */
.btn {
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    font-family: var(--font-body);
    letter-spacing: 0.5px;
}

.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(--neon-cyan);
    color: var(--deep-space);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    background: var(--electric-blue);
    box-shadow: var(--glow-cyan), 0 6px 20px rgba(0, 217, 255, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--neon-cyan);
    border: 2px solid var(--neon-cyan);
}

.btn-secondary:hover {
    background: var(--neon-cyan);
    color: var(--deep-space);
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

/* Links */
a {
    color: var(--neon-cyan);
    text-decoration: none;
    transition: all 0.3s;
}

a:hover {
    color: var(--electric-blue);
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

/* Cards */
.card {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    transition: all 0.3s;
}

.card:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
    transform: translateY(-5px);
}

/* Back Link */
.back-link {
    display: inline-block;
    margin-top: var(--spacing-md);
    color: var(--neon-cyan);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 4px;
    transition: all 0.3s;
}

.back-link:hover {
    border-color: var(--neon-cyan);
    background: rgba(0, 217, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}

/* Scroll Progress Indicator */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(0, 217, 255, 0.2);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: var(--scroll-progress, 0%);
    background: linear-gradient(90deg, var(--neon-cyan), var(--electric-blue));
    box-shadow: var(--glow-cyan);
    transition: width 0.1s;
}

/* Footer */
footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(0, 217, 255, 0.2);
    background: rgba(10, 10, 15, 0.5);
    text-align: center;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
    box-shadow: var(--glow-cyan);
}

footer .tagline {
    color: var(--text-muted);
    font-size: 1rem;
    margin: var(--spacing-sm) 0;
    font-style: italic;
}

footer .footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin: var(--spacing-md) 0;
}

footer .footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s;
    position: relative;
}

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

footer .footer-links a::after {
    content: ' →';
    opacity: 0;
    transition: opacity 0.3s;
}

footer .footer-links a {
    padding-right: 0;
}

footer .footer-links a:hover::after {
    opacity: 1;
}

footer .social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin: var(--spacing-sm) 0;
}

footer .social-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.3s;
}

footer .social-links a:hover {
    color: var(--neon-cyan);
}

footer .copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: var(--spacing-md);
    opacity: 0.7;
}