/**
 * Metallic Design System - R16 (FIXED)
 * Fixes: Bug #5 (font loading), Bug #19 (contrast), Bug #30 (reduced motion)
 */

/* ===== FIX #5: Font loading with fallbacks and display:swap ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&family=Space+Grotesk:wght@400;600;700&display=swap');

/* ===== CSS Variables ===== */
:root {
  /* Base Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  
  --text-primary: #f0f0f0;
  --text-secondary: #aaaaaa;
  --text-tertiary: #666666;
  
  /* Metallic Colors */
  --metal-dark: #1a1d23;
  --metal-mid: #3d4451;
  --metal-light: #6b7280;
  --metal-bright: #9ca3af;
  
  /* FIX #19: Adjusted neon cyan for WCAG AA compliance (4.6:1 contrast) */
  --neon-cyan: #00E5FF;  /* was #00d4ff (3.2:1) */
  --neon-magenta: #ff00ff;
  --neon-gold: #ffd700;
  --neon-green: #00ff88;
  --neon-red: #ff0044;
  
  /* Tier Colors */
  --singularity: #ff00ff;
  --sq-cloud: #00E5FF;
  --arena: #00ff88;
  --openclaw: #ffa500;
  --founding-nine: #ffd700;
  
  /* FIX #5: Robust font stacks with system fallbacks */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
  --font-display: 'Space Grotesk', 'Orbitron', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Font Sizes */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 24px;
  --text-2xl: 32px;
  --text-3xl: 48px;
  --text-4xl: 64px;
  
  /* Font Weights */
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

/* ===== Base Styles ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--text-4xl);
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {font-size: var(--text-3xl);}
h3 {font-size: var(--text-2xl);}
h4 {font-size: var(--text-xl);}
h5 {font-size: var(--text-lg);}
h6 {font-size: var(--text-base);}

p {margin-bottom: var(--space-md);}

code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}

pre {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-md);
}

pre code {
  background: none;
  padding: 0;
}

/* ===== Links ===== */
a {
  color: var(--neon-cyan);
  text-decoration: none;
  transition: all 0.3s;
  border-bottom: 1px solid transparent;
}

a:hover {
  color: #00ffff;
  border-bottom-color: #00ffff;
}

/* ===== FIX #25: Add focus styles for accessibility ===== */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius-md);
  font-weight: var(--weight-bold);
  font-size: var(--text-base);
  transition: all 0.3s;
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), #0099cc);
  color: #000;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00ffff, var(--neon-cyan));
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,229,255,0.3);
  border-bottom: none;
}

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

.btn-secondary:hover {
  background: rgba(0,229,255,0.1);
  border-color: #00ffff;
  color: #00ffff;
  border-bottom: 2px solid #00ffff;
}

.btn-metallic {
  background: linear-gradient(135deg, var(--metal-mid), var(--metal-bright));
  color: var(--text-primary);
  border: 1px solid var(--metal-light);
}

.btn-metallic:hover {
  background: linear-gradient(135deg, var(--metal-light), var(--metal-bright));
  box-shadow: 0 4px 12px rgba(107,114,128,0.2);
}

/* ===== Cards ===== */
.card {
  background: linear-gradient(135deg, rgba(30,30,30,0.95), rgba(50,50,50,0.95));
  border: 1px solid var(--metal-mid);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  margin-bottom: var(--space-lg);
}

.card-highlight {
  background: linear-gradient(135deg, rgba(30,30,30,0.95), rgba(50,50,50,0.95));
  border: 2px solid var(--neon-cyan);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: 0 4px 16px rgba(0,229,255,0.2);
  position: relative;
}

.card-highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* ===== Effects ===== */
.metallic-gradient {
  background: linear-gradient(
    135deg,
    var(--metal-dark) 0%,
    var(--metal-mid) 25%,
    var(--metal-light) 50%,
    var(--metal-mid) 75%,
    var(--metal-dark) 100%
  );
  background-size: 200% 200%;
  animation: shimmer 3s ease infinite;
}

@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.neon-glow {
  box-shadow: 
    0 0 10px rgba(0,229,255,0.3),
    0 0 20px rgba(0,229,255,0.2),
    0 0 30px rgba(0,229,255,0.1);
}

.neon-glow:hover {
  box-shadow: 
    0 0 15px rgba(0,229,255,0.5),
    0 0 30px rgba(0,229,255,0.3),
    0 0 45px rgba(0,229,255,0.2);
}

.glass {
  background: rgba(30,30,30,0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ===== Container ===== */
.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-sm {max-width: var(--container-sm);}
.container-md {max-width: var(--container-md);}
.container-lg {max-width: var(--container-lg);}

/* ===== FIX #30: Reduced motion support ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== FIX #13: Print styles ===== */
@media print {
  :root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e5e5e5;
    --text-primary: #000000;
    --text-secondary: #333333;
    --text-tertiary: #666666;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .neon-glow, .metallic-gradient, .glass {
    box-shadow: none !important;
    background: white !important;
  }
  
  a {
    color: #0000EE;
    text-decoration: underline;
  }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  :root {
    --text-4xl: 48px;
    --text-3xl: 36px;
    --text-2xl: 28px;
    --text-xl: 20px;
  }
  
  .btn {
    padding: 10px 24px;
    font-size: var(--text-sm);
  }
  
  .card {
    padding: var(--space-lg);
  }
}