:root {
  /* Brand Colors - Dark Tech Theme (Default) */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.7);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-card: rgba(15, 23, 42, 0.55);
  --header-bg: rgba(9, 13, 22, 0.8);
  --ribbon-bg: rgba(15, 23, 42, 0.65);

  /* Borders & Accents */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  --border-cyan-glow: rgba(6, 182, 212, 0.35);

  /* Primary Gradient */
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --secondary-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --accent-cyan: #06b6d4;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  /* Typography Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  --text-gradient: linear-gradient(135deg, #ffffff 20%, #94a3b8 100%);
  --text-glow-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);

  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Elevation & Glows */
  --glow-cyan: 0 0 35px rgba(6, 182, 212, 0.25);
  --glow-indigo: 0 0 35px rgba(99, 102, 241, 0.3);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] {
  /* Clean, Premium Modern Light Theme */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --bg-glass: rgba(0, 0, 0, 0.03);
  --bg-glass-card: rgba(255, 255, 255, 0.85);
  --header-bg: rgba(255, 255, 255, 0.9);
  --ribbon-bg: rgba(255, 255, 255, 0.85);

  --border-subtle: rgba(15, 23, 42, 0.12);
  --border-glow: rgba(99, 102, 241, 0.2);
  --border-cyan-glow: rgba(6, 182, 212, 0.2);

  --text-main: #0f172a;
  --text-muted: #334155;
  --text-dark: #64748b;
  --text-gradient: linear-gradient(135deg, #0f172a 20%, #334155 100%);
  --text-glow-gradient: linear-gradient(135deg, #0284c7 0%, #4338ca 50%, #7e22ce 100%);

  --glow-cyan: 0 4px 25px rgba(6, 182, 212, 0.15);
  --glow-indigo: 0 4px 25px rgba(99, 102, 241, 0.15);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
}