/*
 * Design system — ÚNICA fuente de estilos (traducción de design-system/MASTER.md).
 * Sin Tailwind. Ningún hex fuera de :root (tests/design-tokens.test.js).
 * Fuente: Inter desde Google Fonts, enlazada en cada página con preconnect (no @import).
 */
@layer reset, tokens, base, components, utilities;

/* ───────────────────────── reset ───────────────────────── */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
  body { min-height: 100vh; min-height: 100dvh; }
  img, picture, svg, video, canvas { display: block; max-width: 100%; }
  input, button, textarea, select { font: inherit; color: inherit; }
  button { background: none; border: 0; padding: 0; cursor: pointer; }
  ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
  p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }
  table { border-collapse: collapse; }
  [hidden] { display: none !important; }
}

/* ───────────────────────── tokens ───────────────────────── */
@layer tokens {
  :root {
    /* Color */
    --color-bg: #FFFFFF;
    --color-surface: #F5F5F5;
    --color-surface-raised: #FFFFFF;
    --color-text: #171717;
    --color-text-secondary: #525252;
    --color-text-tertiary: #6B6B6B;
    --color-border: #E5E5E5;
    --color-border-control: #8C8C8C;
    --color-accent: #5B6B4A;
    --color-accent-hover: #4A5A3B;
    --color-accent-soft: #EEF1EA;
    --color-on-accent: #FFFFFF;
    --color-inverse-bg: #111111;
    --color-inverse-text: #F5F5F5;
    --color-inverse-text-secondary: #A3A3A3;
    --color-inverse-accent: #B5C4A1;
    --color-danger: #B42318;
    --color-danger-soft: #FEF3F2;
    --color-warning: #8A5300;
    --color-warning-soft: #FFF8EB;
    --color-info: #2F5D8A;
    --color-info-soft: #EFF5FB;
    --color-success: var(--color-accent);
    --color-success-soft: var(--color-accent-soft);
    --color-overlay: rgb(17 17 17 / 0.48);
    --color-glass: rgb(255 255 255 / 0.8);
    --color-shimmer: rgb(255 255 255 / 0.6);

    /* Tipografía */
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --text-display: clamp(2.5rem, 1.6rem + 4.5vw, 5rem);
    --text-h1: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
    --text-h2: clamp(1.5rem, 1.25rem + 1.25vw, 2.5rem);
    --text-h3: 1.25rem;
    --text-lead: clamp(1.125rem, 1rem + 0.5vw, 1.3125rem);
    --text-body: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
    --text-small: 0.875rem;
    --text-caption: 0.8125rem;
    --leading-tight: 1.05;
    --leading-heading: 1.15;
    --leading-body: 1.5;
    --tracking-display: -0.035em;
    --tracking-h1: -0.03em;
    --tracking-h2: -0.02em;
    --tracking-h3: -0.01em;
    --tracking-body: -0.005em;
    --measure: 68ch;

    /* Espaciado (base 8) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4rem;
    --space-9: 6rem;
    --space-10: 8rem;
    --container-max: 80rem;
    --gutter: clamp(1rem, 4vw, 3rem);
    --section-y: clamp(4rem, 10vw, 8rem);
    --control-h: 3rem;
    --control-h-sm: 2.5rem;
    --control-h-lg: 3.5rem;
    --tap-min: 2.75rem;

    /* Radios */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 999px;

    /* Profundidad */
    --shadow-none: none;
    --shadow-sm: 0 1px 2px rgb(23 23 23 / 0.06);
    --shadow-md: 0 8px 24px -8px rgb(23 23 23 / 0.14);
    --shadow-lg: 0 24px 48px -16px rgb(23 23 23 / 0.2);
    --z-sticky: 10;
    --z-panel: 20;
    --z-overlay: 30;
    --z-dialog: 40;
    --z-tooltip: 50;

    /* Movimiento */
    --dur-fast: 150ms;
    --dur-base: 200ms;
    --dur-slow: 300ms;
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-standard: cubic-bezier(0.2, 0, 0, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);

    /* Foco */
    --focus-ring: 2px solid var(--color-accent);
    --focus-offset: 2px;

    color-scheme: light;
  }

  @media (prefers-reduced-motion: reduce) {
    :root {
      --dur-fast: 1ms;
      --dur-base: 1ms;
      --dur-slow: 1ms;
    }
  }
}

/* ───────────────────────── base ───────────────────────── */
@layer base {
  html { scroll-behavior: smooth; scrollbar-color: var(--color-border-control) transparent; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

  body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    line-height: var(--leading-body);
    letter-spacing: var(--tracking-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    accent-color: var(--color-accent);
  }

  h1, h2, h3, h4 { font-weight: var(--weight-semibold); text-wrap: balance; }
  h1 { font-size: var(--text-h1); line-height: 1.1; letter-spacing: var(--tracking-h1); }
  h2 { font-size: var(--text-h2); line-height: var(--leading-heading); letter-spacing: var(--tracking-h2); }
  h3 { font-size: var(--text-h3); line-height: 1.3; letter-spacing: var(--tracking-h3); }
  h4 { font-size: var(--text-body); line-height: 1.4; }
  p { text-wrap: pretty; }

  a {
    color: inherit;
    text-decoration-line: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
    transition: color var(--dur-fast) var(--ease-standard), text-decoration-color var(--dur-fast) var(--ease-standard);
  }
  a:hover { color: var(--color-accent); }

  small { font-size: var(--text-small); }
  strong, b { font-weight: var(--weight-semibold); }
  hr { border: 0; border-top: 1px solid var(--color-border); }

  ::selection { background: var(--color-accent-soft); color: var(--color-text); }
  input, textarea { caret-color: var(--color-accent); }

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

/* ───────────────────────── components ───────────────────────── */
@layer components {
  /* Logotipo tipográfico: el texto lo escribe tools/apply-brand.js */
  .brand {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-min);
    font-size: 1.125rem;
    font-weight: var(--weight-semibold);
    letter-spacing: -0.02em;
    color: var(--color-text);
    text-decoration: none;
    white-space: nowrap;
  }
  .brand:hover { color: var(--color-text); }
  .brand img { height: 1.75rem; width: auto; }

  /* Botones */
  .btn {
    --btn-h: var(--control-h);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: var(--btn-h);
    padding: 0 var(--space-5);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: var(--text-small);
    font-weight: var(--weight-medium);
    line-height: 1;
    letter-spacing: 0;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    transition:
      background-color var(--dur-fast) var(--ease-standard),
      border-color var(--dur-fast) var(--ease-standard),
      color var(--dur-fast) var(--ease-standard),
      transform var(--dur-fast) var(--ease-out);
  }
  .btn:active:not(:disabled, [aria-disabled="true"]) { transform: scale(0.98); }
  .btn svg { width: 1.25rem; height: 1.25rem; flex: none; }

  .btn--primary { background: var(--color-accent); color: var(--color-on-accent); }
  .btn--primary:hover { background: var(--color-accent-hover); color: var(--color-on-accent); }

  .btn--secondary { background: var(--color-bg); color: var(--color-text); border-color: var(--color-border-control); }
  .btn--secondary:hover { border-color: var(--color-text); color: var(--color-text); }

  .btn--ghost { background: transparent; color: var(--color-text); }
  .btn--ghost:hover { background: var(--color-surface); color: var(--color-text); }

  .btn--sm { --btn-h: var(--control-h-sm); padding: 0 var(--space-4); }
  .btn--lg { --btn-h: var(--control-h-lg); padding: 0 var(--space-6); font-size: var(--text-body); }
  .btn--block { display: flex; width: 100%; }

  .btn:disabled,
  .btn[aria-disabled="true"] {
    background: var(--color-surface);
    border-color: transparent;
    color: var(--color-text-tertiary);
    cursor: not-allowed;
  }
  .btn[aria-busy="true"] { cursor: progress; }
  .btn[aria-busy="true"]::after {
    content: "";
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: var(--radius-pill);
    animation: ds-spin 700ms linear infinite;
  }

  /* Campos */
  .field { display: grid; gap: var(--space-2); }
  .field__label { font-size: var(--text-small); font-weight: var(--weight-medium); color: var(--color-text); }
  .field__hint { font-size: var(--text-small); color: var(--color-text-tertiary); }
  .field__error { display: flex; gap: var(--space-2); align-items: flex-start; font-size: var(--text-small); color: var(--color-danger); }
  .field__error svg { width: 1rem; height: 1rem; flex: none; margin-top: 0.15em; }

  .input, .select, .textarea {
    width: 100%;
    min-height: var(--control-h);
    padding: 0 var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border-control);
    border-radius: var(--radius-sm);
    font-size: 1rem; /* 16 px: evita el zoom en iOS */
    color: var(--color-text);
    transition: border-color var(--dur-fast) var(--ease-standard), box-shadow var(--dur-fast) var(--ease-standard);
  }
  .textarea { min-height: 7.5rem; padding: var(--space-3) var(--space-4); resize: vertical; }
  .input::placeholder, .textarea::placeholder { color: var(--color-text-tertiary); opacity: 1; }
  .input:hover, .select:hover, .textarea:hover { border-color: var(--color-text-secondary); }
  .input:focus-visible, .select:focus-visible, .textarea:focus-visible {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-accent);
  }
  .input[aria-invalid="true"], .select[aria-invalid="true"], .textarea[aria-invalid="true"] {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 1px var(--color-danger);
  }
  .input:disabled, .select:disabled, .textarea:disabled {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text-tertiary);
    cursor: not-allowed;
  }
  .select {
    appearance: none;
    padding-right: var(--space-7);
    background-image:
      linear-gradient(45deg, transparent 50%, var(--color-text-secondary) 50%),
      linear-gradient(135deg, var(--color-text-secondary) 50%, transparent 50%);
    background-position: calc(100% - 22px) 50%, calc(100% - 17px) 50%;
    background-size: 5px 5px;
    background-repeat: no-repeat;
    cursor: pointer;
  }

  /* Checkbox y radio */
  .check, .radio {
    appearance: none;
    display: inline-grid;
    place-content: center;
    width: 1.25rem;
    height: 1.25rem;
    flex: none;
    background: var(--color-bg);
    border: 1px solid var(--color-border-control);
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease-standard), border-color var(--dur-fast) var(--ease-standard);
  }
  .check { border-radius: var(--radius-sm); }
  .radio { border-radius: var(--radius-pill); }
  .check::before {
    content: "";
    width: 0.7rem;
    height: 0.7rem;
    background: var(--color-on-accent);
    clip-path: polygon(14% 44%, 0 59%, 40% 100%, 100% 22%, 86% 8%, 40% 71%);
    transform: scale(0);
    transition: transform var(--dur-base) var(--ease-out);
  }
  .radio::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    border-radius: var(--radius-pill);
    background: var(--color-on-accent);
    transform: scale(0);
    transition: transform var(--dur-base) var(--ease-out);
  }
  .check:checked, .radio:checked { background: var(--color-accent); border-color: var(--color-accent); }
  .check:checked::before, .radio:checked::before { transform: scale(1); }
  .check:hover:not(:checked, :disabled), .radio:hover:not(:checked, :disabled) { border-color: var(--color-text); }
  .check:disabled, .radio:disabled { background: var(--color-surface); border-color: var(--color-border); cursor: not-allowed; }
  .check[aria-invalid="true"] { border-color: var(--color-danger); }

  .option { display: flex; gap: var(--space-3); align-items: flex-start; min-height: var(--tap-min); padding-block: var(--space-2); cursor: pointer; }
  .option > .check, .option > .radio { margin-top: 0.15em; }

  /* Radio "tarjeta": una decisión clara, toda la tarjeta es clicable */
  .choice {
    position: relative;
    display: grid;
    gap: var(--space-1);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg);
    border: 1px solid var(--color-border-control);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--dur-base) var(--ease-standard), background-color var(--dur-base) var(--ease-standard), box-shadow var(--dur-base) var(--ease-standard);
  }
  .choice > input { position: absolute; opacity: 0; pointer-events: none; }
  .choice__title { font-weight: var(--weight-medium); }
  .choice__meta { font-size: var(--text-small); color: var(--color-text-secondary); }
  .choice__price { font-size: var(--text-small); font-weight: var(--weight-medium); font-variant-numeric: tabular-nums; }
  .choice:hover { border-color: var(--color-text); }
  .choice:has(input:checked) {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
    box-shadow: inset 0 0 0 1px var(--color-accent);
  }
  .choice:has(input:focus-visible) { outline: var(--focus-ring); outline-offset: var(--focus-offset); }
  .choice:has(input:disabled) { background: var(--color-surface); border-color: var(--color-border); color: var(--color-text-tertiary); cursor: not-allowed; }
  .choice:has(input:disabled) .choice__meta { color: var(--color-text-tertiary); }
  .choices { display: grid; gap: var(--space-3); }

  /* Interruptor: <input type="checkbox" role="switch" class="switch"> */
  .switch {
    appearance: none;
    position: relative;
    width: 2.75rem;
    height: 1.5rem;
    flex: none;
    background: var(--color-border-control);
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background-color var(--dur-base) var(--ease-standard);
  }
  .switch::before {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 1.25rem;
    height: 1.25rem;
    background: var(--color-bg);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur-base) var(--ease-out);
  }
  .switch:checked { background: var(--color-accent); }
  .switch:checked::before { transform: translateX(1.25rem); }
  .switch:disabled { background: var(--color-border); cursor: not-allowed; }

  /* Selector de cantidad */
  .stepper {
    align-self: flex-start;
    width: max-content;
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-border-control);
    border-radius: var(--radius-sm);
  }
  .stepper__btn {
    display: grid;
    place-items: center;
    width: var(--tap-min);
    height: var(--tap-min);
    color: var(--color-text);
    transition: background-color var(--dur-fast) var(--ease-standard);
  }
  .stepper__btn:hover:not(:disabled) { background: var(--color-surface); }
  .stepper__btn:disabled { color: var(--color-text-tertiary); cursor: not-allowed; }
  .stepper__btn svg { width: 1rem; height: 1rem; }
  .stepper__value { min-width: 3ch; text-align: center; font-weight: var(--weight-medium); font-variant-numeric: tabular-nums; }

  /* Barra de pasos tipo Tesla */
  .progress {
    display: flex;
    gap: var(--space-5);
    margin: 0;
    padding: 0;
    list-style: none;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .progress::-webkit-scrollbar { display: none; }
  .progress__step {
    position: relative;
    flex: none;
    padding-block: var(--space-3);
    font-size: var(--text-small);
    color: var(--color-text-tertiary);
    white-space: nowrap;
  }
  .progress__step::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-slow) var(--ease-out);
  }
  .progress__step.is-done { color: var(--color-text-secondary); }
  .progress__step[aria-current="step"] { color: var(--color-text); font-weight: var(--weight-medium); }
  .progress__step[aria-current="step"]::after { transform: scaleX(1); }
  .progress__step a { color: inherit; text-decoration: none; }
  .progress__step a:hover { color: var(--color-text); }

  /* Tarjeta: fondo de superficie, sin sombra ni borde; nunca anidada */
  .card { padding: var(--space-5); background: var(--color-surface); border-radius: var(--radius-lg); }
  .card--flush { padding: 0; overflow: hidden; }

  /* Chip */
  .chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-height: var(--control-h-sm);
    padding: 0 var(--space-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    font-size: var(--text-small);
    font-weight: var(--weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: border-color var(--dur-base) var(--ease-standard), background-color var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
  }
  .chip:hover { border-color: var(--color-border-control); color: var(--color-text); }
  .chip[aria-pressed="true"] { background: var(--color-text); border-color: var(--color-text); color: var(--color-bg); }

  /* Avisos */
  .alert {
    --alert-fg: var(--color-info);
    --alert-bg: var(--color-info-soft);
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
    padding: var(--space-4);
    background: var(--alert-bg);
    border-radius: var(--radius-md);
    font-size: var(--text-small);
    color: var(--color-text);
  }
  .alert > svg { width: 1.25rem; height: 1.25rem; flex: none; color: var(--alert-fg); }
  .alert__title { display: block; font-weight: var(--weight-semibold); color: var(--alert-fg); }
  .alert--warning { --alert-fg: var(--color-warning); --alert-bg: var(--color-warning-soft); }
  .alert--error { --alert-fg: var(--color-danger); --alert-bg: var(--color-danger-soft); }
  .alert--success { --alert-fg: var(--color-success); --alert-bg: var(--color-success-soft); }

  /* Panel lateral (resumen del configurador) */
  .panel {
    display: grid;
    align-content: start;
    gap: var(--space-5);
    padding: var(--space-5);
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
  }
  @media (max-width: 63.99rem) {
    .panel--sticky-mobile {
      position: fixed;
      inset: auto 0 0;
      z-index: var(--z-panel);
      padding: var(--space-3) var(--gutter) calc(var(--space-3) + env(safe-area-inset-bottom));
      border-left: 0;
      border-top: 1px solid var(--color-border);
      box-shadow: var(--shadow-md);
    }
  }

  /* Resumen de precio */
  .summary { display: grid; gap: var(--space-2); }
  .summary__label { font-size: var(--text-small); color: var(--color-text-secondary); }
  .summary__price {
    font-size: clamp(1.5rem, 1.3rem + 1vw, 2rem);
    font-weight: var(--weight-semibold);
    letter-spacing: -0.02em;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
    transition: opacity var(--dur-base) var(--ease-standard);
  }
  .summary__price.is-updating { opacity: 0.4; }
  .summary__note { font-size: var(--text-caption); color: var(--color-text-tertiary); }
  .summary__row { display: flex; justify-content: space-between; gap: var(--space-4); font-size: var(--text-small); font-variant-numeric: tabular-nums; }

  /* Tooltip: <span class="tooltip" role="tooltip"> junto a su disparador */
  .tooltip {
    position: absolute;
    z-index: var(--z-tooltip);
    max-width: 16rem;
    padding: var(--space-2) var(--space-3);
    background: var(--color-inverse-bg);
    color: var(--color-inverse-text);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-size: var(--text-small);
    line-height: 1.4;
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
  }
  .has-tooltip { position: relative; }
  .has-tooltip:hover > .tooltip,
  .has-tooltip:focus-within > .tooltip,
  .tooltip.is-open { opacity: 1; transform: translateY(0); }

  /* Esqueleto de carga */
  .skeleton {
    position: relative;
    overflow: hidden;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    color: transparent;
  }
  .skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, var(--color-shimmer), transparent);
    transform: translateX(-100%);
    animation: ds-shimmer 1.4s var(--ease-standard) infinite;
  }
  @media (prefers-reduced-motion: reduce) { .skeleton::after { animation: none; display: none; } }

  /* Diálogo nativo */
  .dialog {
    width: min(32rem, calc(100% - 2 * var(--gutter)));
    padding: var(--space-6);
    background: var(--color-surface-raised);
    color: var(--color-text);
    border: 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
  }
  .dialog::backdrop { background: var(--color-overlay); }
  .dialog[open] { animation: ds-dialog-in var(--dur-slow) var(--ease-out); }

  /* Cabecera fija: el único vidrio permitido */
  .site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--color-glass);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    backdrop-filter: saturate(180%) blur(16px);
  }

  @keyframes ds-spin { to { transform: rotate(360deg); } }
  @keyframes ds-shimmer { to { transform: translateX(100%); } }
  @keyframes ds-dialog-in { from { opacity: 0; transform: translateY(8px) scale(0.98); } }
}

/* ───────────────────────── utilities ───────────────────────── */
@layer utilities {
  .container { width: 100%; max-width: var(--container-max); margin-inline: auto; padding-inline: var(--gutter); }
  .section { padding-block: var(--section-y); }
  .stack { display: flex; flex-direction: column; gap: var(--stack-gap, var(--space-4)); }
  .cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--cluster-gap, var(--space-3)); }
  .measure { max-width: var(--measure); }
  .display { font-size: var(--text-display); line-height: var(--leading-tight); letter-spacing: var(--tracking-display); font-weight: var(--weight-semibold); text-wrap: balance; }
  .lead { font-size: var(--text-lead); line-height: var(--leading-body); letter-spacing: var(--tracking-h3); color: var(--color-text-secondary); }
  .text-small { font-size: var(--text-small); }
  .text-caption { font-size: var(--text-caption); }
  .text-secondary { color: var(--color-text-secondary); }
  .text-tertiary { color: var(--color-text-tertiary); }
  .text-center { text-align: center; }
  .tabular { font-variant-numeric: tabular-nums; }
  .surface { background: var(--color-surface); }
  .inverse { background: var(--color-inverse-bg); color: var(--color-inverse-text); }
  .inverse .text-secondary, .inverse .lead { color: var(--color-inverse-text-secondary); }
  .inverse :focus-visible { outline-color: var(--color-inverse-accent); }
  .full-height { min-height: 100vh; min-height: 100dvh; }
  .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;
  }
}