/* ============================
   Theme: CSS Custom Properties
   ============================ */
:root {
  /* Core palette - deep science aesthetic */
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1424;
  --bg-tertiary: #141a2e;
  --surface-1: #1a2138;
  --surface-2: #222b45;
  --surface-3: #2a3554;

  /* Text */
  --text-primary: #e8ecf4;
  --text-secondary: #8b95b0;
  --text-muted: #5a6580;

  /* Accent colors */
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.15);
  --accent-glow: rgba(110, 231, 183, 0.3);

  /* Semantic colors */
  --blue: #60a5fa;
  --blue-dim: rgba(96, 165, 250, 0.15);
  --purple: #a78bfa;
  --purple-dim: rgba(167, 139, 250, 0.15);
  --amber: #fbbf24;
  --amber-dim: rgba(251, 191, 36, 0.15);
  --rose: #fb7185;
  --rose-dim: rgba(251, 113, 133, 0.15);
  --cyan: #22d3ee;
  --cyan-dim: rgba(34, 211, 238, 0.15);
  --orange: #fb923c;
  --orange-dim: rgba(251, 146, 60, 0.15);

  /* Sizing */
  --nav-height: 60px;
  --section-padding: 80px;
  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
}

/* Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

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

::selection {
  background: var(--accent-dim);
  color: var(--accent);
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--surface-3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}