/**
 * tokens.css - Design System Tokens for Mohammed Al-Attas Portfolio
 * Inspired by pszostak.pl, polished with Apple HIG & Emil Kowalski craft principles.
 */

:root {
  /* Default to Dark Obsidian Theme */
  --bg-base: #09090d;
  --bg-surface: #121218;
  --bg-surface-elevated: #181822;
  --bg-surface-glass: rgba(18, 18, 24, 0.72);
  --bg-surface-glass-heavy: rgba(14, 14, 20, 0.88);

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-glow: rgba(139, 92, 246, 0.35);

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-on-accent: #ffffff;

  /* Accent & Gradients */
  --accent: #8b5cf6;
  --accent-hover: #a78bfa;
  --accent-light: rgba(139, 92, 246, 0.15);
  --accent-gradient-start: #6366f1;
  --accent-gradient-end: #a855f7;
  --accent-secondary: #06b6d4;

  /* Ambient Glows */
  --glow-primary: rgba(139, 92, 246, 0.18);
  --glow-secondary: rgba(99, 102, 241, 0.14);
  --glow-cyan: rgba(6, 182, 212, 0.12);

  /* Semantic Colors */
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.25);
  --error: #ef4444;

  /* Spacing & Layout */
  --container-max: 1200px;
  --container-narrow: 840px;
  --nav-height: 72px;

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 48px -8px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 32px var(--glow-primary);

  /* Transitions & Springs (Emil Kowalski rule: fast responsive feedback, never slow ease-in) */
  --spring-fast: 160ms cubic-bezier(0.16, 1, 0.3, 1);
  --spring-normal: 260ms cubic-bezier(0.16, 1, 0.3, 1);
  --spring-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: 220ms ease;

  /* Z-Index Hierarchy */
  --z-background: -10;
  --z-ambient: 0;
  --z-content: 10;
  --z-sticky-nav: 50;
  --z-modal: 100;
  --z-toast: 150;
}

/* Light Mode Support */
[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-glass: rgba(255, 255, 255, 0.82);
  --bg-surface-glass-heavy: rgba(255, 255, 255, 0.94);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);
  --border-glow: rgba(124, 58, 237, 0.25);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-light: rgba(124, 58, 237, 0.1);
  --accent-gradient-start: #4f46e5;
  --accent-gradient-end: #9333ea;

  --glow-primary: rgba(124, 58, 237, 0.08);
  --glow-secondary: rgba(79, 70, 229, 0.06);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 24px var(--glow-primary);
}