/* Design System Tokens - Adaptive Human
 *
 * Foundation adapted from Protocol Memory design system.
 * Extends PM's proven structure with Adaptive Human's visual identity:
 * - Teal (primary, from PM for ecosystem cohesion)
 * - Gold (accent, kintsugi philosophy - constraints as features)
 * - Purple (accent, spectrum connection to phillipclapham.com)
 *
 * Philosophy: These tokens provide capabilities, not mandates.
 * Visual language will emerge through component building.
 */

/* ============================================
   ROOT VARIABLES (Light Mode Default)
   ============================================ */

:root {
  /* ==================== COLORS ==================== */

  /* Primary text colors */
  --color-primary: #111;
  --color-secondary: #555;
  --color-tertiary: #9ca3af;

  /* Accent colors - Teal (PM cohesion) */
  --color-accent: #006b6d;
  --color-accent-hover: #008c8f;
  --color-accent-faint: rgba(0, 107, 109, 0.1);

  /* Accent colors - Gold (kintsugi) */
  --color-gold: #C9A961;
  --color-gold-hover: #B8985A;
  --color-gold-faint: rgba(201, 169, 97, 0.1);

  /* Accent colors - Orange (energy, mad scientist) */
  --color-orange: #E67E22;
  --color-orange-hover: #D35400;
  --color-orange-faint: rgba(230, 126, 34, 0.1);

  /* Accent colors - Purple (spectrum) */
  --color-purple: #9333ea;
  --color-purple-hover: #a855f7;
  --color-purple-faint: rgba(147, 51, 234, 0.1);

  /* Accent colors - Magenta (spectrum) */
  --color-magenta: #db2777;
  --color-magenta-hover: #ec4899;
  --color-magenta-faint: rgba(219, 39, 119, 0.1);

  /* Status colors */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  --color-info: #3b82f6;

  /* Background colors */
  --bg-primary: #fafafa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f3f4f6;
  --bg-hover: #f9fafb;

  /* Text colors */
  --text-primary: #111;
  --text-secondary: #555;
  --text-tertiary: #9ca3af;
  --text-muted: #6b7280;

  /* Border colors */
  --border-color: #d1d5db;
  --border-light: #e5e7eb;
  --border-dark: #9ca3af;
  --border-focus: #006b6d;

  /* Special colors */
  --overlay-bg: rgba(0, 0, 0, 0.7);
  --overlay-light: rgba(0, 0, 0, 0.5);

  /* ==================== SPACING ==================== */
  /* 4px base scale - proven in PM */

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* ==================== TYPOGRAPHY ==================== */

  /* Font families - Match PM for ecosystem cohesion */
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Syne', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Source Code Pro', 'Monaco', 'Courier New', monospace;

  /* Font sizes */
  --text-xs: 12px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-md: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 28px;
  --text-4xl: 32px;
  --text-5xl: 36px;
  --text-6xl: 48px;
  --text-7xl: 60px;

  /* Font weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line heights */
  --line-tight: 1.25;
  --line-snug: 1.375;
  --line-normal: 1.5;
  --line-relaxed: 1.6;
  --line-loose: 1.75;

  /* Letter spacing */
  --tracking-tight: -0.6px;
  --tracking-normal: 0px;
  --tracking-wide: 0.4px;
  --tracking-wider: 0.6px;
  --tracking-widest: 0.8px;

  /* ==================== BORDERS ==================== */

  --radius-sm: 3px;
  --radius-base: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-3xl: 24px;
  --radius-full: 9999px;

  --border-width: 1px;
  --border-width-thick: 2px;
  --border-width-thicker: 3px;

  /* ==================== SHADOWS ==================== */
  /* Light mode shadows */

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);

  /* Focus shadows - teal accent */
  --shadow-focus: 0 0 0 2px rgba(0, 107, 109, 0.15);
  --shadow-focus-ring: 0 0 0 3px rgba(0, 107, 109, 0.05);

  /* ==================== TRANSITIONS ==================== */

  /* Duration */
  --transition-fast: 150ms;
  --transition-normal: 200ms;
  --transition-medium: 250ms;
  --transition-slow: 300ms;
  --transition-slower: 400ms;

  /* Timing functions */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-default: ease;

  /* Combined transitions */
  --transition-all-fast: all 150ms ease;
  --transition-all-normal: all 200ms ease;
  --transition-all-medium: all 250ms ease;
  --transition-all-slow: all 300ms ease;

  /* ==================== Z-INDEX ==================== */

  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 500;
  --z-overlay: 1000;
  --z-modal: 10000;
  --z-modal-nested: 10001;
  --z-toast: 10002;
  --z-tooltip: 10003;

  /* ==================== LAYOUT ==================== */

  /* Container widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 960px;
  --container-xl: 1200px;
  --container-2xl: 1400px;

  /* Common sizes */
  --size-xs: 16px;
  --size-sm: 20px;
  --size-base: 24px;
  --size-md: 28px;
  --size-lg: 32px;
  --size-xl: 36px;
  --size-2xl: 40px;

  /* Input/form heights */
  --input-height-sm: 32px;
  --input-height-base: 40px;
  --input-height-lg: 48px;

  /* ==================== OPACITY ==================== */

  --opacity-disabled: 0.5;
  --opacity-hover: 0.8;
  --opacity-muted: 0.6;
}


/* ============================================
   DARK MODE OVERRIDES
   ============================================ */

body.dark-mode {
  /* ==================== COLORS ==================== */

  /* Primary text colors */
  --color-primary: #f9fafb;
  --color-secondary: #d1d5db;
  --color-tertiary: #6b7280;

  /* Accent colors - Teal (brighter for dark mode) */
  --color-accent: #00a8ab;
  --color-accent-hover: #00c5c9;
  --color-accent-faint: rgba(0, 168, 171, 0.15);

  /* Accent colors - Gold (brighter for dark mode) */
  --color-gold: #D4AF37;
  --color-gold-hover: #E5C158;
  --color-gold-faint: rgba(212, 175, 55, 0.15);

  /* Accent colors - Orange (brighter for dark mode) */
  --color-orange: #F39C12;
  --color-orange-hover: #F4B350;
  --color-orange-faint: rgba(243, 156, 18, 0.15);

  /* Accent colors - Purple (brighter for dark mode) */
  --color-purple: #a855f7;
  --color-purple-hover: #c084fc;
  --color-purple-faint: rgba(168, 85, 247, 0.15);

  /* Accent colors - Magenta (brighter for dark mode) */
  --color-magenta: #ec4899;
  --color-magenta-hover: #f472b6;
  --color-magenta-faint: rgba(236, 72, 153, 0.15);

  /* Status colors (adjusted for dark backgrounds) */
  --color-success: #10b981;
  --color-error: #f87171;
  --color-warning: #fbbf24;
  --color-info: #60a5fa;

  /* Background colors */
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d29;
  --bg-tertiary: #25293a;
  --bg-hover: #2d3142;

  /* Text colors */
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-muted: #6b7280;

  /* Border colors */
  --border-color: #374151;
  --border-light: #4b5563;
  --border-dark: #1f2937;
  --border-focus: #00a8ab;

  /* Special colors */
  --overlay-bg: rgba(0, 0, 0, 0.8);
  --overlay-light: rgba(0, 0, 0, 0.6);

  /* ==================== SHADOWS (DARK MODE) ==================== */
  /* More pronounced shadows for depth in dark mode */

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.7);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.8);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.3);

  /* Focus shadows for dark mode */
  --shadow-focus: 0 0 0 2px rgba(0, 168, 171, 0.3);
  --shadow-focus-ring: 0 0 0 3px rgba(0, 168, 171, 0.15);
}


/* ============================================
   ACCESSIBILITY: REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  :root {
    /* Override all transitions to be nearly instant */
    --transition-fast: 1ms;
    --transition-normal: 1ms;
    --transition-medium: 1ms;
    --transition-slow: 1ms;
    --transition-slower: 1ms;

    --transition-all-fast: all 1ms ease;
    --transition-all-normal: all 1ms ease;
    --transition-all-medium: all 1ms ease;
    --transition-all-slow: all 1ms ease;
  }

  /* Disable all animations and transitions for users who prefer reduced motion */
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}


/* ============================================
   DESIGN NOTES
   ============================================

   COLOR STRATEGY:
   - Teal: Primary brand (PM cohesion)
   - Gold: Kintsugi accent (constraints as features)
   - Orange: Energy, mad scientist, secondary actions

   These are CAPABILITIES not prescriptions. Visual language
   will emerge through component building. We have the colors
   available - how we use them (gradient seams, highlights,
   interactive states, etc) will be discovered in practice.

   SPACING SCALE:
   4px base - proven in PM, works well for precision

   TYPOGRAPHY:
   Matching PM fonts for ecosystem cohesion:
   - Plus Jakarta Sans: Humanist, readable body
   - Syne: Geometric, modern headings
   - Source Code Pro: Technical, monospace

   Can differentiate later if needed, but cohesion first.

   DARK MODE:
   First-class, not afterthought. Brighter accents for contrast.
   More pronounced shadows for depth cues.

   ============================================ */