/* ==========================================================================
   om-css · tokens.css
   --------------------------------------------------------------------------
   Design tokens centralizados + reset base + utilidades mínimas.

   Esta hoja se asienta sobre una CAPA DE MARCA: las variables --brand-*
   (definidas en brand.css, editable a mano o desde el panel "Marca" de la
   galería) alimentan el acento, los grises, las fuentes y el radio.
   Aquí solo se DERIVAN los tokens del sistema a partir de esa capa, con
   valores por defecto (fallback) por si brand.css no estuviera presente.

   Orden de carga:  brand.css  →  tokens.css  →  css/<componente>.css
   Recreación original — no es código de Tailwind Plus.
   ========================================================================== */

/* ---------- 0. Valores por defecto de la capa de marca ------------------ */
/* (brand.css los sobrescribe; el panel "Marca" los ajusta en vivo)        */
:root {
  --brand-accent: #4f46e5;          /* color principal de marca           */
  --brand-gray-h: 222;              /* matiz de los grises (0–360)        */
  --brand-gray-s: 14%;              /* saturación de los grises (frío↔cálido) */
  --brand-radius-scale: 1;          /* multiplicador de redondez (0–2)    */
  --brand-font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --brand-font-display: var(--brand-font-body);
  --brand-success: #16a34a;
  --brand-warning: #d97706;
  --brand-danger: #dc2626;
  --brand-info: #2563eb;
}

/* ---------- 1. Tokens base (independientes del tema) --------------------- */
:root {
  /* Tipografía ----------------------------------------------------------- */
  --font-sans: var(--brand-font-body);
  --font-display: var(--brand-font-display);
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code",
    "Cascadia Code", Menlo, Consolas, monospace;

  /* Escala tipográfica fluida (clamp: min · preferido · max) -------------- */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 1.875rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.6vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.7rem + 2.6vw, 3.5rem);
  --text-5xl: clamp(2.75rem, 1.9rem + 3.8vw, 4.5rem);

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.55;
  --leading-relaxed: 1.7;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.04em;
  --tracking-wider: 0.08em;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Espaciado (escala de 4px) -------------------------------------------- */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radios (escalados por --brand-radius-scale) -------------------------- */
  --radius-xs: calc(0.25rem * var(--brand-radius-scale));
  --radius-sm: calc(0.375rem * var(--brand-radius-scale));
  --radius-md: calc(0.5rem * var(--brand-radius-scale));
  --radius-lg: calc(0.75rem * var(--brand-radius-scale));
  --radius-xl: calc(1rem * var(--brand-radius-scale));
  --radius-2xl: calc(1.5rem * var(--brand-radius-scale));
  --radius-full: 9999px;

  /* Contenedores ---------------------------------------------------------- */
  --container-sm: 40rem;
  --container-md: 48rem;
  --container-lg: 64rem;
  --container-xl: 72rem;
  --container-2xl: 80rem;

  /* Transiciones ---------------------------------------------------------- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 120ms var(--ease-out);
  --transition: 180ms var(--ease-out);
  --transition-slow: 280ms var(--ease-out);

  /* Z-index --------------------------------------------------------------- */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 800;
  --z-modal: 900;
  --z-toast: 1000;

  --c-white: #ffffff;
  --c-black: #0a0a0a;

  /* Escala de acento DERIVADA de --brand-accent (un color → 4 tonos) ------ */
  --c-accent-400: color-mix(in oklab, var(--brand-accent), white 28%);
  --c-accent-500: color-mix(in oklab, var(--brand-accent), white 14%);
  --c-accent-600: var(--brand-accent);
  --c-accent-700: color-mix(in oklab, var(--brand-accent), black 16%);

  /* Semánticos crudos (derivan su versión "soft" del color base) --------- */
  --c-success: var(--brand-success);
  --c-success-soft: color-mix(in oklab, var(--brand-success), white 86%);
  --c-warning: var(--brand-warning);
  --c-warning-soft: color-mix(in oklab, var(--brand-warning), white 84%);
  --c-danger: var(--brand-danger);
  --c-danger-soft: color-mix(in oklab, var(--brand-danger), white 86%);
  --c-info: var(--brand-info);
  --c-info-soft: color-mix(in oklab, var(--brand-info), white 86%);
}

/* ---------- 2. Tema CLARO (por defecto) --------------------------------- */
:root,
[data-theme="light"] {
  color-scheme: light;

  --color-bg: hsl(var(--brand-gray-h) var(--brand-gray-s) 100%);
  --color-surface: hsl(var(--brand-gray-h) var(--brand-gray-s) 100%);
  --color-surface-2: hsl(var(--brand-gray-h) var(--brand-gray-s) 98%);
  --color-surface-3: hsl(var(--brand-gray-h) var(--brand-gray-s) 96%);
  --color-overlay: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 14%) 16% / 0.5);

  --color-border: hsl(var(--brand-gray-h) var(--brand-gray-s) 91%);
  --color-border-strong: hsl(var(--brand-gray-h) var(--brand-gray-s) 84%);

  --color-text: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 14%) 15%);
  --color-text-muted: hsl(var(--brand-gray-h) var(--brand-gray-s) 44%);
  --color-text-subtle: hsl(var(--brand-gray-h) var(--brand-gray-s) 60%);
  --color-text-invert: hsl(var(--brand-gray-h) var(--brand-gray-s) 98%);

  --color-accent: var(--c-accent-600);
  --color-accent-hover: var(--c-accent-700);
  --color-accent-soft: color-mix(in oklab, var(--brand-accent), white 90%);
  --color-accent-text: color-mix(in oklab, var(--brand-accent), black 8%);
  --color-on-accent: #ffffff;

  --color-success: var(--c-success);
  --color-success-soft: var(--c-success-soft);
  --color-warning: var(--c-warning);
  --color-warning-soft: var(--c-warning-soft);
  --color-danger: var(--c-danger);
  --color-danger-soft: var(--c-danger-soft);
  --color-info: var(--c-info);
  --color-info-soft: var(--c-info-soft);

  --color-ring: var(--c-accent-600);

  --shadow-xs: 0 1px 2px rgba(17, 24, 39, 0.06);
  --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.1), 0 1px 2px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 4px 12px rgba(17, 24, 39, 0.08), 0 2px 4px rgba(17, 24, 39, 0.06);
  --shadow-lg: 0 12px 28px rgba(17, 24, 39, 0.12), 0 4px 10px rgba(17, 24, 39, 0.06);
  --shadow-xl: 0 24px 56px rgba(17, 24, 39, 0.18);
}

/* ---------- 3. Tema OSCURO ----------------------------------------------- */
[data-theme="dark"] {
  color-scheme: dark;

  --color-bg: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 6%) 7%);
  --color-surface: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 4%) 11%);
  --color-surface-2: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 4%) 13%);
  --color-surface-3: hsl(var(--brand-gray-h) var(--brand-gray-s) 18%);
  --color-overlay: rgba(0, 0, 0, 0.65);

  --color-border: hsl(var(--brand-gray-h) var(--brand-gray-s) 23%);
  --color-border-strong: hsl(var(--brand-gray-h) var(--brand-gray-s) 31%);

  --color-text: hsl(var(--brand-gray-h) var(--brand-gray-s) 96%);
  --color-text-muted: hsl(var(--brand-gray-h) var(--brand-gray-s) 64%);
  --color-text-subtle: hsl(var(--brand-gray-h) var(--brand-gray-s) 45%);
  --color-text-invert: hsl(var(--brand-gray-h) var(--brand-gray-s) 13%);

  --color-accent: var(--c-accent-500);
  --color-accent-hover: var(--c-accent-400);
  --color-accent-soft: color-mix(in oklab, var(--brand-accent), black 66%);
  --color-accent-text: color-mix(in oklab, var(--brand-accent), white 55%);
  --color-on-accent: #ffffff;

  --color-success: color-mix(in oklab, var(--brand-success), white 30%);
  --color-success-soft: color-mix(in oklab, var(--brand-success), black 74%);
  --color-warning: color-mix(in oklab, var(--brand-warning), white 30%);
  --color-warning-soft: color-mix(in oklab, var(--brand-warning), black 74%);
  --color-danger: color-mix(in oklab, var(--brand-danger), white 28%);
  --color-danger-soft: color-mix(in oklab, var(--brand-danger), black 74%);
  --color-info: color-mix(in oklab, var(--brand-info), white 32%);
  --color-info-soft: color-mix(in oklab, var(--brand-info), black 74%);

  --color-ring: var(--c-accent-400);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.6), 0 4px 10px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 24px 56px rgba(0, 0, 0, 0.7);
}

/* Respeta la preferencia del sistema si no hay tema explícito en <html> --- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --color-bg: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 6%) 7%);
    --color-surface: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 4%) 11%);
    --color-surface-2: hsl(var(--brand-gray-h) calc(var(--brand-gray-s) + 4%) 13%);
    --color-surface-3: hsl(var(--brand-gray-h) var(--brand-gray-s) 18%);
    --color-overlay: rgba(0, 0, 0, 0.65);
    --color-border: hsl(var(--brand-gray-h) var(--brand-gray-s) 23%);
    --color-border-strong: hsl(var(--brand-gray-h) var(--brand-gray-s) 31%);
    --color-text: hsl(var(--brand-gray-h) var(--brand-gray-s) 96%);
    --color-text-muted: hsl(var(--brand-gray-h) var(--brand-gray-s) 64%);
    --color-text-subtle: hsl(var(--brand-gray-h) var(--brand-gray-s) 45%);
    --color-text-invert: hsl(var(--brand-gray-h) var(--brand-gray-s) 13%);
    --color-accent: var(--c-accent-500);
    --color-accent-hover: var(--c-accent-400);
    --color-accent-soft: color-mix(in oklab, var(--brand-accent), black 66%);
    --color-accent-text: color-mix(in oklab, var(--brand-accent), white 55%);
    --color-success: color-mix(in oklab, var(--brand-success), white 30%);
    --color-success-soft: color-mix(in oklab, var(--brand-success), black 74%);
    --color-warning: color-mix(in oklab, var(--brand-warning), white 30%);
    --color-warning-soft: color-mix(in oklab, var(--brand-warning), black 74%);
    --color-danger: color-mix(in oklab, var(--brand-danger), white 28%);
    --color-danger-soft: color-mix(in oklab, var(--brand-danger), black 74%);
    --color-info: color-mix(in oklab, var(--brand-info), white 32%);
    --color-info-soft: color-mix(in oklab, var(--brand-info), black 74%);
    --color-ring: var(--c-accent-400);
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.6), 0 4px 10px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 24px 56px rgba(0, 0, 0, 0.7);
  }
}

/* ---------- 4. Reset base ------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color var(--transition), color var(--transition);
}

img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: var(--leading-tight);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

/* ---------- 5. Accesibilidad: foco visible coherente -------------------- */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

:focus:not(:focus-visible) {
  outline: none;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 6. Utilidades de demostración (páginas de componentes) ------ */
.demo-page {
  min-height: 100vh;
  padding: var(--space-12) var(--space-4);
  background:
    radial-gradient(60rem 60rem at 50% -20%, var(--color-surface-2), transparent 60%),
    var(--color-bg);
}

.demo-wrap {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
}

.demo-header {
  max-width: var(--container-md);
  margin: 0 auto var(--space-10);
  text-align: center;
}

.demo-header h1 {
  font-size: var(--text-3xl);
}

.demo-header p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

.demo-section {
  margin-bottom: var(--space-12);
}

.demo-label {
  display: inline-block;
  margin-bottom: var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.demo-theme-toggle {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
    transform var(--transition-fast);
}
.demo-theme-toggle:hover {
  background: var(--color-surface-3);
  transform: translateY(-1px);
}