/*
 * Fichas EpiCO · Estilos base compartidos.
 * Tokens de diseño y componentes comunes (títulos, campos, selects, radios,
 * checkboxes, botones, textos de ayuda y avisos). Se carga antes que cualquier
 * hoja específica de página. Guía de uso: docs/guia-estilos.md
 *
 * Los selectores de elementos usan :where() para tener especificidad 0, así
 * cualquier clase de página puede ajustarlos sin pelear con esta hoja.
 */

:root {
  color-scheme: light;

  /* Color · marca */
  --color-primary: #096451;
  --color-primary-strong: #075342;
  --color-primary-soft: #e1f1eb;
  --color-primary-subtle: #f3f8f5;
  --color-on-primary: #ffffff;
  --color-on-primary-muted: #e3f3ed;

  /* Color · texto y superficies */
  --color-text: #17211d;
  --color-text-muted: #59655f;
  --color-page: #f4f8f6;
  --color-surface: #ffffff;
  --color-surface-muted: #f7faf8;
  --color-border: #d3e0da;
  --color-border-strong: #7d948a;
  --color-disabled-bg: #edf2ef;
  --color-disabled-text: #6c7872;

  /* Color · estados */
  --color-danger: #b42318;
  --color-danger-text: #8a1c13;
  --color-danger-soft: #fff2f0;
  --color-warning: #8b6a18;
  --color-warning-text: #704000;
  --color-warning-soft: #fff9e8;
  --color-info-soft: #f0f8f4;

  /* Tipografía */
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --text-xs: .8125rem;
  --text-sm: .875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-display: clamp(2rem, 5vw, 3.25rem);
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-heavy: 800;
  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-normal: 1.5;

  /* Espaciado */
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  /* Forma y elevación */
  --radius-sm: .375rem;
  --radius-md: .5rem;
  --radius-lg: .75rem;
  --radius-xl: 1.25rem;
  --radius-pill: 999px;
  --control-height: 2.75rem;
  --shadow-sm: 0 .5rem 1.25rem rgb(7 83 66 / 12%);
  --shadow-md: 0 1rem 2.5rem rgb(7 83 66 / 8%);
  --shadow-lg: 0 1.5rem 4.5rem rgb(7 83 66 / 12%);
  --focus-ring: 0 0 0 3px rgb(9 100 81 / 22%);
  --focus-outline: 3px solid rgb(9 100 81 / 35%);
  --transition-fast: 150ms ease;
}

/* ---------- Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-page);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: var(--leading-normal);
}

:where(button, input, select, textarea) {
  font: inherit;
}

[hidden] {
  display: none !important;
}

/* ---------- Títulos ---------- */

:where(h1, h2, h3, h4, p) {
  margin-top: 0;
}

:where(h1) {
  margin-bottom: var(--space-3);
  font-size: var(--text-display);
  font-weight: var(--weight-heavy);
  line-height: 1.08;
  letter-spacing: -.02em;
}

:where(h2) {
  margin-bottom: var(--space-4);
  color: var(--color-primary-strong);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
}

:where(h3) {
  color: var(--color-primary-strong);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
}

:where(h4) {
  color: var(--color-primary-strong);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
}

.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* ---------- Campos de texto y selects ---------- */

:where(input:not([type="radio"], [type="checkbox"], [type="hidden"]), select, textarea) {
  width: 100%;
  min-height: var(--control-height);
  padding: .625rem .75rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-md);
  font-weight: var(--weight-regular);
  line-height: var(--leading-snug);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

:where(select) {
  padding-right: 2.25rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%2359655f' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-position: right .85rem center;
  background-repeat: no-repeat;
  background-size: .75rem .5rem;
  cursor: pointer;
}

:where(input, select, textarea)::placeholder {
  color: var(--color-text-muted);
  opacity: .75;
}

:where(input:not([type="radio"], [type="checkbox"]), select, textarea):focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: var(--focus-ring);
}

:where(input, select, textarea):disabled {
  background-color: var(--color-disabled-bg);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}

:where(input:not([type="radio"], [type="checkbox"]), select, textarea)[aria-invalid="true"] {
  border-color: var(--color-danger);
  background-color: var(--color-danger-soft);
}

/* ---------- Radios y checkboxes ---------- */

:where(input[type="radio"], input[type="checkbox"]) {
  flex: 0 0 auto;
  width: 1.125rem;
  height: 1.125rem;
  margin: .125rem 0 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

:where(input[type="radio"], input[type="checkbox"]):focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Fila de opción: <label><input type="radio"> Texto</label> */
:where(label:has(> input[type="radio"]), label:has(> input[type="checkbox"])) {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  line-height: var(--leading-snug);
  cursor: pointer;
}

/* ---------- Campo con etiqueta ---------- */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

/* Texto informativo bajo un campo o grupo. */
.field-help,
.field-note,
.field small {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
}

/* Unidad dentro de la etiqueta: «Peso <small>kg</small>» */
.field > span > small {
  display: inline;
}

/* ---------- Grupo de opciones (fieldset) ---------- */

:where(fieldset) {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

:where(legend) {
  padding: 0;
}

.choice-field,
.choice-group {
  min-width: 0;
  margin: 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-muted);
}

.choice-field legend,
.choice-group legend {
  max-width: 100%;
  padding: 0 var(--space-1);
  color: var(--color-primary-strong);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
}

/* ---------- Botones ---------- */

.button,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--control-height);
  padding: .625rem 1.125rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  line-height: 1.2;
  text-decoration: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.button:focus-visible,
.secondary-action:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

.button:disabled,
.secondary-action:disabled {
  cursor: not-allowed;
  opacity: .6;
}

.button-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.button-primary:hover:not(:disabled) {
  background: var(--color-primary-strong);
}

.button-secondary,
.secondary-action {
  border-color: var(--color-primary);
  background: var(--color-surface);
  color: var(--color-primary-strong);
}

.button-secondary:hover:not(:disabled),
.secondary-action:hover:not(:disabled) {
  background: var(--color-primary-soft);
}

/* Botón compacto para acciones dentro de un formulario. */
.button-sm,
.secondary-action {
  min-height: 2.5rem;
  padding: .5rem .875rem;
  font-size: var(--text-sm);
}

/* ---------- Avisos ---------- */

.notice,
.privacy-note,
.notice-note,
.medical-notice {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-info-soft);
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.notice-warning,
.notice-note {
  border-left-color: var(--color-warning);
  background: var(--color-warning-soft);
}

/* Resumen de errores al enviar un formulario. */
.form-errors,
.error-summary {
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-danger);
  border-left-width: 4px;
  border-radius: var(--radius-md);
  background: var(--color-danger-soft);
  color: var(--color-danger-text);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

/* Error bajo un campo concreto. */
.field-error,
.form-field-error,
.date-field-error {
  display: block;
  width: 100%;
  margin: var(--space-1) 0 0;
  color: var(--color-danger);
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
  line-height: var(--leading-snug);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}