/* =========================================================
   categorias.css — Mascotas Ayacucho (FINAL AA)
   - Grid responsivo 2→3→4
   - Variables locales (sin auto-referencias)
   - Foco visible y contraste AA
   - Dark mode opcional
   ========================================================= */

/* ---------- Variables LOCALES (scoped) ---------- */
.categorias-section{
  --cat-gap-xs: 10px;
  --cat-gap-sm: 12px;
  --cat-gap-md: 14px;

  --cat-radius: 16px;
  --cat-shadow: 0 6px 18px rgba(0,0,0,.08);
  --cat-shadow-hover: 0 10px 24px rgba(0,0,0,.10);

  --cat-bg: var(--color-fondo-claro, #E0FAFA);
  --cat-white: var(--color-blanco, #FFFFFF);
  --cat-text: var(--color-texto, #2B2B2B);
  --cat-muted: var(--color-muted, #6B7280);
  --cat-border: var(--border, #e5e7eb);

  /* Colores de marca (turquesa = support) */
  --cat-primary: var(--support, #0AC5CA);
  --cat-primary-600: var(--support-600, #089EA2);

  /* Banda/títulos con contraste AA */
  --cat-strong: var(--cat-primary);
  --cat-strong-600: var(--cat-primary-600);

  /* Foco accesible (con fallback) */
  --cat-focus: var(--focus-ring, 0 0 0 3px color-mix(in srgb, var(--brand, #FF0000) 45%, #fff));
  --cat-focus-fb: 0 0 0 3px rgba(255,0,0,.35);
}

/* ---------- Sección ---------- */
.categorias-section{
  background: var(--cat-bg);
  color: var(--cat-text);
  text-align: center;
  padding-block: 28px;
  padding-inline: clamp(10px, 2vw, 20px);
}

/* (OPCIONAL) Full-bleed */
.categorias-section.is-full{
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}

/* ---------- Títulos ---------- */
.categorias-section .section-title{
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  line-height: 1.2;
  margin: 0 0 1.5rem;
  color: var(--cat-strong);
  font-weight: 800;
}
.categorias-section .section-subtitle{
  color: var(--cat-muted);
  margin-top: .25rem;
  font-size: .95rem;
}

/* ---------- Grid 2 → 3 → 4 ---------- */
.categorias-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--cat-gap-xs);
  align-items: stretch;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 992px){
  .categorias-grid{
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: var(--cat-gap-sm);
  }
}
@media (min-width: 1400px){
  .categorias-grid{
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: var(--cat-gap-md);
  }
}

/* ---------- Tarjeta ---------- */
.categoria-card{
  position: relative;
  isolation: isolate;
  background: var(--cat-white);
  border: 1px solid var(--cat-border);
  border-radius: var(--cat-radius);
  overflow: hidden;
  box-shadow: var(--cat-shadow);
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}
/* content-visibility: auto (opcional) */
@supports (content-visibility: auto){
  .categoria-card{ content-visibility: auto; }
}

@media (hover:hover){
  .categoria-card:hover{
    transform: translateY(-3px);
    box-shadow: var(--cat-shadow-hover);
  }
}
/* Reduce motion: desactiva transiciones; combina con hover */
@media (prefers-reduced-motion: reduce){
  .categoria-card{ transition: none; }
}
@media (prefers-reduced-motion: reduce) and (hover:hover){
  .categoria-card:hover{ transform: none; box-shadow: var(--cat-shadow); }
}

/* Haz toda la card clicable si usas <a> */
.categoria-card > a{
  display: grid;
  grid-template-rows: 1fr auto;
  color: inherit;
  text-decoration: none;
  min-height: 100%;
  outline: none;
}

/* ---------- Imagen ---------- */
.categoria-card img{
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  background: #f3f4f6;
  margin: 0;
}

/* Placeholder opcional */
.categoria-card .categoria-placeholder{
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(90deg, #f3f4f6 0%, #f9fafb 50%, #f3f4f6 100%);
  animation: cat-skeleton 1.4s ease-in-out infinite;
}
@keyframes cat-skeleton{
  0% { filter: brightness(1); }
  50% { filter: brightness(1.06); }
  100% { filter: brightness(1); }
}

/* ---------- Banda de título (AA) ---------- */
.categoria-title{
  background: var(--cat-strong);
  color: #fff;
  padding: .6rem .75rem;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.2;
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
/* text-wrap: balance (opcional) */
@supports (text-wrap: balance){
  .categoria-title{ text-wrap: balance; }
}

@media (hover:hover){
  .categoria-card:hover .categoria-title{
    background: var(--cat-strong-600);
  }
}

/* ---------- Accesibilidad: foco visible ---------- */
.categoria-card > a:focus-visible{
  outline: none;
  box-shadow: var(--cat-focus);
  border-radius: .5rem;
}
@supports not (color: color-mix(in srgb, black 10%, white)){
  .categoria-card > a:focus-visible{ box-shadow: var(--cat-focus-fb); }
}

/* Estados deshabilitados */
.categoria-card.is-disabled{
  filter: grayscale(.5) opacity(.7);
  pointer-events: none;
}

/* Utilidad: separación entre bloques de categorías */
.categorias-section + .categorias-section{ margin-top: 1.25rem; }

/* ---------- Dark mode (opcional) ---------- */
@media (prefers-color-scheme: dark){
  .categorias-section{
    --cat-bg: #0f172a;
    --cat-white: #0b1020;
    --cat-text: #e5e7eb;
    --cat-muted: #9ca3af;
    --cat-border: rgba(255,255,255,.08);
  }
  .categoria-card{ box-shadow: 0 6px 18px rgba(0,0,0,.4); }
}
@media (prefers-color-scheme: dark) and (hover:hover){
  .categoria-card:hover{ box-shadow: 0 10px 24px rgba(0,0,0,.5); }
}

/* ---------- Compatibilidad progresiva ---------- */
@supports (contain-intrinsic-size: 1px 1px){
  .categoria-card{ contain-intrinsic-size: 220px 320px; }
}

/* RTL friendly */
:where(html[dir="rtl"]) .categorias-section{ direction: rtl; }