/* ═══════════════════════════════════════════════════════════════
   TeachedOS — Design Tokens
   Single source of truth for all design decisions
═══════════════════════════════════════════════════════════════ */

:root {
  /* ── Color: Brand ── */
  --color-rose:      #C8E632;
  --color-lime:      #C8E632;
  --color-lavender:  #1C1C1E;
  --color-black:     #1C1C1E;
  --color-white:     #FFFFFF;

  /* ── Color: Sand Scale ── */
  --sand-50:  #FAFAF4;
  --sand-100: #F5F0E8;
  --sand-200: #EDE8E0;
  --sand-300: #CAC9B7;
  --sand-400: #A2A28C;
  --sand-500: #7A7A64;
  --sand-600: #5E5E4A;
  --sand-700: #3A3A2E;
  --sand-800: #1E1E16;
  --sand-900: #1C1C1E;

  /* ── Color: Semantic ── */
  --color-bg:          #F5F0E8;
  --color-bg-subtle:   var(--sand-200);
  --color-bg-muted:    var(--sand-300);
  --color-surface:     var(--color-white);
  --color-surface-2:   var(--sand-50);
  --color-overlay:     rgba(245,240,232,0.92);

  --color-text:        var(--sand-900);
  --color-text-2:      var(--sand-700);
  --color-text-3:      var(--sand-400);
  --color-text-inv:    var(--color-white);

  --color-border:      rgba(94,94,74,0.14);
  --color-border-2:    rgba(94,94,74,0.28);
  --color-border-3:    rgba(94,94,74,0.08);

  --color-primary:     var(--color-rose);
  --color-primary-bg:  rgba(200,230,50,0.08);
  --color-primary-bg2: rgba(200,230,50,0.16);
  --color-primary-border: rgba(200,230,50,0.24);

  --color-accent-2:    var(--color-lavender);
  --color-accent-3:    var(--color-lime);

  /* ── Color: Status ── */
  --color-success:  #22C55E;
  --color-warning:  #F59E0B;
  --color-error:    #EF4444;
  --color-info:     var(--color-lavender);

  /* ── Color: Dark Theme ── */
  --color-dark-bg:       #1C1C1E;
  --color-dark-surface:  #2C2C2E;
  --color-dark-border:   rgba(202,201,183,0.12);
  --color-dark-text:     #F5F0E8;
  --color-dark-text-2:   #CAC9B7;
  --color-dark-text-3:   #5E5E4A;

  /* ── Typography: Families ── */
  --font-sans:  -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:  'SFMono-Regular', 'SF Mono', ui-monospace, Menlo, Monaco, Consolas, monospace;

  /* ── Typography: Scale ── */
  --text-2xs:  9px;
  --text-xs:   11px;
  --text-sm:   13px;
  --text-base: 15px;
  --text-md:   17px;
  --text-lg:   20px;
  --text-xl:   24px;
  --text-2xl:  30px;
  --text-3xl:  38px;
  --text-4xl:  48px;
  --text-5xl:  60px;

  /* ── Typography: Weights ── */
  --weight-regular: 400;
  --weight-book:    500;
  --weight-medium:  600;
  --weight-bold:    700;
  --weight-heavy:   800;
  --weight-black:   900;

  /* ── Typography: Line Heights ── */
  --leading-tight:  1.1;
  --leading-solid:  1.2;
  --leading-snug:   1.3;
  --leading-normal: 1.5;
  --leading-relaxed:1.7;

  /* ── Typography: Tracking ── */
  --tracking-tightest: -0.05em;
  --tracking-tighter:  -0.035em;
  --tracking-tight:    -0.022em;
  --tracking-normal:   -0.011em;
  --tracking-wide:      0.04em;
  --tracking-wider:     0.08em;

  /* ── Spacing Scale (4px base) ── */
  --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;

  /* ── Border Radius ── */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   14px;
  --radius-xl:   18px;
  --radius-2xl:  22px;
  --radius-3xl:  28px;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-xs:  0 1px 3px rgba(5,5,23,0.06);
  --shadow-sm:  0 2px 8px rgba(5,5,23,0.07);
  --shadow-md:  0 4px 20px rgba(5,5,23,0.09);
  --shadow-lg:  0 8px 32px rgba(5,5,23,0.11);
  --shadow-xl:  0 16px 56px rgba(5,5,23,0.13);
  --shadow-2xl: 0 32px 80px rgba(5,5,23,0.16);
  --shadow-rose-sm:   0 4px 16px rgba(200,230,50,0.22);
  --shadow-rose-md:   0 8px 28px rgba(200,230,50,0.28);

  /* ── Transitions ── */
  --ease-default:  cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-bounce:   cubic-bezier(0.34, 1.3, 0.64, 1);
  --ease-out:      cubic-bezier(0, 0, 0.2, 1);
  --ease-in:       cubic-bezier(0.4, 0, 1, 1);

  --duration-fast:   120ms;
  --duration-base:   180ms;
  --duration-slow:   280ms;
  --duration-slower: 420ms;

  /* ── Z-Index Scale ── */
  --z-base:     1;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  500;
  --z-modal:    800;
  --z-toast:    900;
  --z-top:      1000;

  /* ── Layout ── */
  --max-width:       1200px;
  --max-width-prose: 680px;
  --menubar-h:       32px;
  --dock-h:          80px;
  --sidebar-w:       200px;
}

/* ── Dark mode overrides ── */
[data-theme="dark"] {
  --color-bg:        var(--color-dark-bg);
  --color-bg-subtle: #242426;
  --color-bg-muted:  #3A3A3C;
  --color-surface:   var(--color-dark-surface);
  --color-surface-2: #1C1C1E;
  --color-overlay:   rgba(15,15,38,0.94);

  --color-text:      var(--color-dark-text);
  --color-text-2:    var(--color-dark-text-2);
  --color-text-3:    var(--color-dark-text-3);

  --color-border:    var(--color-dark-border);
  --color-border-2:  rgba(202,201,183,0.22);
  --color-border-3:  rgba(202,201,183,0.06);

  --shadow-xs:  0 1px 3px rgba(0,0,0,0.20);
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.24);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.28);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.32);
  --shadow-xl:  0 16px 56px rgba(0,0,0,0.36);

  color-scheme: dark;
}