/*
  Global design tokens.

  The OKLCH colour ramps, type scale, spacing unit, radii and shadows are the
  raw scales. On top of them we add a thin layer of semantic aliases
  (--color-text, --color-border, ...) that the components read from.
*/

@layer reset, base, components, modules, utilities;

:root {
  /* ----- Typography ----- */
  --font-sans: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-signature: Whisper, cursive;

  --default-font-family: var(--font-sans);
  --default-mono-font-family: var(--font-mono);

  --text-xs: 0.75rem;
  --text-xs--line-height: calc(1 / 0.75);
  --text-sm: 0.875rem;
  --text-sm--line-height: calc(1.25 / 0.875);
  --text-base: 1rem;
  --text-base--line-height: calc(1.5 / 1);
  --text-lg: 1.125rem;
  --text-lg--line-height: calc(1.75 / 1.125);
  --text-xl: 1.25rem;
  --text-xl--line-height: calc(1.75 / 1.25);
  --text-2xl: 1.5rem;
  --text-2xl--line-height: calc(2 / 1.5);
  --text-3xl: 1.875rem;
  --text-3xl--line-height: calc(2.25 / 1.875);
  --text-4xl: 2.25rem;
  --text-4xl--line-height: calc(2.5 / 2.25);
  --text-5xl: 3rem;
  --text-5xl--line-height: 1;
  --text-8xl: 6rem;
  --text-8xl--line-height: 1;

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --tracking-tight: -0.025em;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-relaxed: 1.625;

  /* ----- Spacing ----- */
  --spacing: 0.25rem;

  --container-xs: 20rem;
  --container-md: 28rem;
  --container-lg: 32rem;
  --container-xl: 36rem;
  --container-2xl: 42rem;
  --container-3xl: 48rem;
  --container-4xl: 56rem;
  --container-7xl: 80rem;

  /* ----- Radii ----- */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: calc(infinity * 1px);

  /* ----- Shadows ----- */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow: var(--shadow-sm);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
  --drop-shadow-xs: 0 1px 1px var(--color-black-5);

  /* ----- Blur ----- */
  --blur-xs: 4px;
  --blur-md: 12px;
  --blur-xl: 24px;
  --blur-3xl: 64px;

  /* ----- Z-index ----- */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-60: 60;
  --z-100: 100;

  /* ----- Motion ----- */
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --default-transition-duration: 0.15s;
  --default-transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);

  --animate-spin: spin 1s linear infinite;
  --animate-ping: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
  --animate-pulse: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  --animate-slide-down: slide-down 0.3s ease-out both;
  --animate-bounce-out: bounce-out 0.3s ease-out;
  --animate-fade-in-up: fade-in-up 0.4s ease-out both;
  --animate-jiggle: jiggle 0.7s ease-out both;

  /* ===== Colour ramps (OKLCH) ===== */
  --color-black: #000;
  --color-white: #fff;

  /* Achromatic alpha tints, derived from the base colour */
  --color-black-5: color-mix(in srgb, transparent, var(--color-black) 5%);    /* = #0000000d */
  --color-black-10: color-mix(in srgb, transparent, var(--color-black) 10%);  /* = #0000001a */
  --color-white-5: color-mix(in srgb, transparent, var(--color-white) 5%);    /* = #ffffff0d */
  --color-white-10: color-mix(in srgb, transparent, var(--color-white) 10%);  /* = #ffffff1a */
  --color-white-20: color-mix(in srgb, transparent, var(--color-white) 20%);  /* = #fff3 */
  --color-white-50: color-mix(in srgb, transparent, var(--color-white) 50%);  /* = #ffffff80 */
  --color-white-70: color-mix(in srgb, transparent, var(--color-white) 70%);  /* = #ffffffb3 */

  /* Tinted alpha tints, promoted where they recur */
  --color-gray-50-50: color-mix(in srgb, transparent, var(--color-gray-50) 50%);    /* ~ #f9fafb80 */
  --color-gray-500-75: color-mix(in srgb, transparent, var(--color-gray-500) 75%);  /* ~ #6a7282bf */
  --color-slate-50-50: color-mix(in srgb, transparent, var(--color-slate-50) 50%);  /* ~ #f8fafc80 */

  --color-red-50: oklch(97.1% 0.013 17.38);
  --color-red-100: oklch(93.6% 0.032 17.717);
  --color-red-200: oklch(88.5% 0.062 18.334);
  --color-red-300: oklch(80.8% 0.114 19.571);
  --color-red-400: oklch(70.4% 0.191 22.216);
  --color-red-500: oklch(63.7% 0.237 25.331);
  --color-red-600: oklch(57.7% 0.245 27.325);
  --color-red-700: oklch(50.5% 0.213 27.518);
  --color-red-800: oklch(44.4% 0.177 26.899);
  --color-red-900: oklch(39.6% 0.141 25.723);

  --color-orange-100: oklch(95.4% 0.038 75.164);
  --color-orange-800: oklch(47% 0.157 37.304);

  --color-amber-50: oklch(98.7% 0.022 95.277);
  --color-amber-100: oklch(96.2% 0.059 95.617);
  --color-amber-200: oklch(92.4% 0.12 95.746);
  --color-amber-600: oklch(66.6% 0.179 58.318);
  --color-amber-700: oklch(55.5% 0.163 48.998);
  --color-amber-800: oklch(47.3% 0.137 46.201);
  --color-amber-900: oklch(41.4% 0.112 45.904);

  --color-yellow-50: oklch(98.7% 0.026 102.212);
  --color-yellow-100: oklch(97.3% 0.071 103.193);
  --color-yellow-200: oklch(94.5% 0.129 101.54);
  --color-yellow-400: oklch(85.2% 0.199 91.936);
  --color-yellow-500: oklch(79.5% 0.184 86.047);
  --color-yellow-600: oklch(68.1% 0.162 75.834);
  --color-yellow-700: oklch(55.4% 0.135 66.442);
  --color-yellow-800: oklch(47.6% 0.114 61.907);

  --color-green-50: oklch(98.2% 0.018 155.826);
  --color-green-100: oklch(96.2% 0.044 156.743);
  --color-green-200: oklch(92.5% 0.084 155.995);
  --color-green-400: oklch(79.2% 0.209 151.711);
  --color-green-500: oklch(72.3% 0.219 149.579);
  --color-green-600: oklch(62.7% 0.194 149.214);
  --color-green-700: oklch(52.7% 0.154 150.069);
  --color-green-800: oklch(44.8% 0.119 151.328);
  --color-green-900: oklch(39.3% 0.095 152.535);

  --color-emerald-50: oklch(97.9% 0.021 166.113);
  --color-emerald-100: oklch(95% 0.052 163.051);
  --color-emerald-400: oklch(76.5% 0.177 163.223);
  --color-emerald-500: oklch(69.6% 0.17 162.48);
  --color-emerald-600: oklch(59.6% 0.145 163.225);
  --color-emerald-700: oklch(50.8% 0.118 165.612);
  --color-emerald-800: oklch(43.2% 0.095 166.913);

  --color-sky-50: oklch(97.7% 0.013 236.62);
  --color-sky-200: oklch(90.1% 0.058 230.902);
  --color-sky-900: oklch(39.1% 0.09 240.876);

  --color-blue-50: oklch(97% 0.014 254.604);
  --color-blue-100: oklch(93.2% 0.032 255.585);
  --color-blue-200: oklch(88.2% 0.059 254.128);
  --color-blue-300: oklch(80.9% 0.105 251.813);
  --color-blue-400: oklch(70.7% 0.165 254.624);
  --color-blue-500: oklch(62.3% 0.214 259.815);
  --color-blue-600: oklch(54.6% 0.245 262.881);
  --color-blue-700: oklch(48.8% 0.243 264.376);
  --color-blue-800: oklch(42.4% 0.199 265.638);
  --color-blue-900: oklch(37.9% 0.146 265.522);

  --color-indigo-50: oklch(96.2% 0.018 272.314);
  --color-indigo-100: oklch(93% 0.034 272.788);
  --color-indigo-200: oklch(87% 0.065 274.039);
  --color-indigo-300: oklch(78.5% 0.115 274.713);
  --color-indigo-400: oklch(67.3% 0.182 276.935);
  --color-indigo-500: oklch(58.5% 0.233 277.117);
  --color-indigo-600: oklch(51.1% 0.262 276.966);
  --color-indigo-700: oklch(45.7% 0.24 277.023);
  --color-indigo-800: oklch(39.8% 0.195 277.366);
  --color-indigo-900: oklch(35.9% 0.144 278.697);

  --color-violet-50: oklch(96.9% 0.016 293.756);
  --color-violet-100: oklch(94.3% 0.029 294.588);
  --color-violet-400: oklch(70.2% 0.183 293.541);
  --color-violet-500: oklch(60.6% 0.25 292.717);
  --color-violet-600: oklch(54.1% 0.281 293.009);
  --color-violet-700: oklch(49.1% 0.27 292.581);

  --color-purple-50: oklch(97.7% 0.014 308.299);
  --color-purple-100: oklch(94.6% 0.033 307.174);
  --color-purple-600: oklch(55.8% 0.288 302.321);
  --color-purple-800: oklch(43.8% 0.218 303.724);

  --color-rose-50: oklch(96.9% 0.015 12.422);
  --color-rose-100: oklch(94.1% 0.03 12.58);
  --color-rose-200: oklch(89.2% 0.058 10.001);
  --color-rose-500: oklch(64.5% 0.246 16.439);
  --color-rose-600: oklch(58.6% 0.253 17.585);
  --color-rose-700: oklch(51.4% 0.222 16.935);
  --color-rose-900: oklch(41% 0.159 10.272);

  --color-slate-50: oklch(98.4% 0.003 247.858);
  --color-slate-100: oklch(96.8% 0.007 247.896);
  --color-slate-200: oklch(92.9% 0.013 255.508);
  --color-slate-300: oklch(86.9% 0.022 252.894);
  --color-slate-400: oklch(70.4% 0.04 256.788);
  --color-slate-500: oklch(55.4% 0.046 257.417);
  --color-slate-600: oklch(44.6% 0.043 257.281);
  --color-slate-700: oklch(37.2% 0.044 257.287);
  --color-slate-800: oklch(27.9% 0.041 260.031);
  --color-slate-900: oklch(20.8% 0.042 265.755);
  --color-slate-950: oklch(12.9% 0.042 264.695);

  --color-gray-50: oklch(98.5% 0.002 247.839);
  --color-gray-100: oklch(96.7% 0.003 264.542);
  --color-gray-200: oklch(92.8% 0.006 264.531);
  --color-gray-300: oklch(87.2% 0.01 258.338);
  --color-gray-400: oklch(70.7% 0.022 261.325);
  --color-gray-500: oklch(55.1% 0.027 264.364);
  --color-gray-600: oklch(44.6% 0.03 256.802);
  --color-gray-700: oklch(37.3% 0.034 259.733);
  --color-gray-800: oklch(27.8% 0.033 256.848);
  --color-gray-900: oklch(21% 0.034 264.665);

  /* ===== Semantic aliases ===== */
  /* Text */
  --color-text: var(--color-gray-900);
  --color-text-soft: var(--color-gray-700);
  --color-text-muted: var(--color-gray-500);
  --color-text-inverted: var(--color-white);

  /* Surfaces */
  --color-canvas: var(--color-gray-50);
  --color-surface: var(--color-white);
  --color-surface-muted: var(--color-gray-50);

  /* Lines */
  --color-border: var(--color-gray-200);
  --color-border-strong: var(--color-gray-300);

  /* Brand / intent */
  --color-link: var(--color-blue-600);
  --color-primary: var(--color-blue-600);
  --color-primary-strong: var(--color-blue-700);
  --color-accent: var(--color-indigo-600);
  --color-positive: var(--color-green-600);
  --color-negative: var(--color-red-600);
  --color-warning: var(--color-amber-600);

  /* Focus rings for keyboard navigation */
  --focus-ring-color: var(--color-blue-600);
  --focus-ring-offset: 1px;
  --focus-ring-size: 2px;
  --focus-ring: var(--focus-ring-size) solid var(--focus-ring-color);
}