/* ==========================================================================
   PeptixHouse — Estilos de /carrito.html
   Diseño premium, minimalista, inspirado en Apple / Stripe / Shopify y
   plataformas biotecnológicas. Retícula base de 8px.
   ========================================================================== */

/* === VARIABLES === */
:root {
  --cart-bg: #FCFCFD;
  --cart-card-bg: #FFFFFF;
  --cart-surface-subtle: #F7F8FA;
  --cart-mint: #B8DDD1;
  --cart-mint-dark: #7FBFAB;
  --cart-text: #1A2332;
  --cart-text-secondary: #6B7684;
  --cart-text-tertiary: #9BA3AF;
  --cart-border: #E8ECEF;
  --cart-border-subtle: #ECEEF1;
  --cart-divider: #F1F4F6;
  --cart-error: #E63946;
  --cart-success: #10B981;

  --cart-font: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Retícula de 8px */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 40px;
  --space-7: 48px;
  --space-8: 64px;

  --cart-radius-img: 16px;
  --cart-radius-card: 16px;
  --cart-radius-pill: 26px;
  --cart-radius-sm: 10px;

  --cart-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --cart-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --cart-shadow-lg: 0 16px 32px rgba(15, 23, 42, 0.10);

  --cart-transition: 0.2s ease;
  --cart-transition-slow: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* === RESET === */
.cart-page *,
.cart-page *::before,
.cart-page *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.cart-page {
  background: var(--cart-bg);
  color: var(--cart-text);
  font-family: var(--cart-font);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

.cart-page a {
  text-decoration: none;
  color: inherit;
}

.cart-page button {
  font-family: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

.cart-page img {
  max-width: 100%;
  display: block;
}

/* Foco visible accesible en todos los elementos interactivos */
.cart-page a:focus-visible,
.cart-page button:focus-visible,
.cart-page input:focus-visible {
  outline: 2px solid var(--cart-mint-dark);
  outline-offset: 2px;
}

/* === ANIMACIONES DE ENTRADA === */
@keyframes cart-fade-in-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cart-page .cart-breadcrumb,
.cart-page .cart-main__header,
.cart-page .cart-item,
.cart-page .cart-summary,
.cart-page .cart-empty {
  animation: cart-fade-in-up 0.5s var(--cart-transition-slow) both;
}

.cart-page .cart-main__header { animation-delay: 0.04s; }
.cart-page .cart-summary { animation-delay: 0.12s; }

@media (prefers-reduced-motion: reduce) {
  .cart-page *,
  .cart-page *::before,
  .cart-page *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }
}

/* === BREADCRUMB === */
.cart-breadcrumb {
  border-bottom: 1px solid var(--cart-divider);
}

.cart-breadcrumb__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  font-size: 13px;
  color: var(--cart-text-secondary);
}

.cart-breadcrumb__inner a {
  transition: color var(--cart-transition);
}

.cart-breadcrumb__inner a:hover {
  color: var(--cart-text);
}

.cart-breadcrumb__inner span {
  color: var(--cart-text);
}

/* === RECORDATORIO DE DESCUENTO NO RECLAMADO ===
   Barra editorial y sobria: fondo blanco de tarjeta + acento de color a la
   izquierda, en vez de una banda de color completa — se integra con el
   resto del carrito en lugar de competir visualmente con él. */
.cart-descuento-recordatorio {
  border-bottom: 1px solid var(--cart-divider);
  background: var(--cart-card-bg);
  border-left: 3px solid var(--cart-mint-dark);
}

.cart-descuento-recordatorio__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-4);
}

.cart-descuento-recordatorio__texto {
  font-size: 13.5px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--cart-text-secondary);
  flex: 1;
  min-width: 240px;
}

.cart-descuento-recordatorio__texto strong {
  color: var(--cart-text);
  font-weight: 600;
}

.cart-descuento-recordatorio__acciones {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

/* Selector reforzado (.cart-page + clase) a propósito: .cart-page button
   (más arriba en este archivo) resetea background/border de TODOS los
   botones del carrito con más especificidad que una sola clase — sin este
   refuerzo, ese reset le ganaba y el botón se veía sin color de fondo. */
.cart-page .cart-descuento-recordatorio__btn {
  border: none;
  border-radius: var(--cart-radius-pill);
  background: var(--cart-mint-dark);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 9px 20px;
  cursor: pointer;
  white-space: nowrap;
}

.cart-descuento-recordatorio__cerrar {
  border: none;
  background: transparent;
  color: var(--cart-text-tertiary);
  font-size: 12.5px;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--cart-transition);
}

.cart-descuento-recordatorio__cerrar:hover {
  color: var(--cart-text-secondary);
}

@media (max-width: 640px) {
  .cart-descuento-recordatorio__inner {
    flex-direction: column;
    align-items: stretch;
    text-align: left;
    padding: var(--space-3) var(--space-4);
  }

  .cart-descuento-recordatorio__acciones {
    justify-content: space-between;
    width: 100%;
  }

  .cart-descuento-recordatorio__btn {
    flex: 1;
    text-align: center;
  }
}

@media (max-width: 720px) {
  .cart-descuento-recordatorio__inner {
    padding: var(--space-3) var(--space-4);
  }
}

/* === LAYOUT PRINCIPAL === */
.cart-layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-6);
  display: grid;
  grid-template-columns: minmax(0, 65%) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}

/* === COLUMNA IZQUIERDA === */
.cart-main__header {
  margin-bottom: var(--space-4);
}

.cart-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.cart-count {
  margin-top: var(--space-1);
  font-size: 13px;
  color: var(--cart-text-secondary);
}

.cart-main__divider {
  height: 1px;
  background: var(--cart-divider);
  margin-bottom: var(--space-4);
}

#lista-carrito {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* === TARJETA DE PRODUCTO === */
.cart-item {
  background: var(--cart-card-bg);
  border: 1px solid var(--cart-border-subtle);
  border-radius: var(--cart-radius-card);
  padding: var(--space-4);
  box-shadow: var(--cart-shadow-sm);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: box-shadow var(--cart-transition-slow), transform var(--cart-transition-slow), border-color var(--cart-transition-slow);
}

.cart-item:hover {
  box-shadow: var(--cart-shadow-md);
  border-color: var(--cart-border);
  transform: translateY(-1px);
}

.cart-item.cart-item--saliendo {
  opacity: 0;
  transform: scale(0.96);
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin: 0;
  overflow: hidden;
  transition: opacity 0.25s ease-out, transform 0.25s ease-out,
    max-height 0.25s ease-out, padding 0.25s ease-out, margin 0.25s ease-out;
}

.cart-item__imagen-wrap {
  width: 96px;
  height: 96px;
  flex-shrink: 0;
  border-radius: var(--cart-radius-img);
  background: var(--cart-surface-subtle);
  border: 1px solid var(--cart-border-subtle);
  overflow: hidden;
}

.cart-item__imagen {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item__info {
  flex: 1;
  min-width: 0;
}

.cart-item__nombre {
  font-size: 16px;
  font-weight: 600;
  color: var(--cart-text);
  letter-spacing: -0.005em;
}

.cart-item__precio {
  margin-top: var(--space-1);
  font-size: 14px;
  font-weight: 400;
  color: var(--cart-text-secondary);
}

/* Nota de auto-agregado (Agua Bacteriostática incluida automáticamente) */
.cart-item__auto-nota {
  margin-top: var(--space-2);
  max-width: 420px;
}

.cart-item__auto-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--cart-mint-dark);
  background: color-mix(in srgb, var(--cart-mint) 30%, white);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 6px;
}

.cart-item__auto-nota p {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--cart-text-secondary);
  margin: 0;
}

/* Stepper de cantidad */
.cart-item__stepper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.cart-item__stepper-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--cart-border);
  background: #FFFFFF;
  display: grid;
  place-items: center;
  color: var(--cart-text);
  font-size: 16px;
  line-height: 1;
  transition: background var(--cart-transition), border-color var(--cart-transition), transform 0.15s ease;
}

.cart-item__stepper-btn:hover {
  background: var(--cart-surface-subtle);
  border-color: var(--cart-text-tertiary);
}

.cart-item__stepper-btn:active {
  transform: scale(0.92);
}

.cart-item__cantidad {
  min-width: 20px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

.cart-item__subtotal {
  flex-shrink: 0;
  width: 108px;
  text-align: right;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--cart-text);
  transition: opacity 0.2s ease;
}

.cart-item__eliminar {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: var(--cart-text-tertiary);
  border-radius: 50%;
  transition: color var(--cart-transition), background var(--cart-transition);
}

.cart-item__eliminar:hover {
  color: var(--cart-error);
  background: color-mix(in srgb, var(--cart-error) 8%, transparent);
}

/* === COLUMNA DERECHA: RESUMEN === */
.cart-summary {
  background: var(--cart-card-bg);
  border: 1px solid var(--cart-border-subtle);
  border-radius: var(--cart-radius-card);
  padding: var(--space-4);
  box-shadow: var(--cart-shadow-sm);
  position: sticky;
  top: var(--space-4);
}

.cart-summary__titulo {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.cart-summary__divider {
  height: 1px;
  background: var(--cart-divider);
  margin: var(--space-3) 0;
}

.cart-summary__fila {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--cart-text-secondary);
}

.cart-summary__fila span:last-child {
  color: var(--cart-text);
  font-weight: 500;
}

.cart-summary__fila + .cart-summary__fila {
  margin-top: var(--space-2);
}

.cart-summary__fila--envio span:last-child {
  color: var(--cart-text-tertiary);
  font-style: italic;
  font-weight: 400;
}

.cart-summary__fila--total {
  align-items: center;
}

.cart-summary__fila--total span:first-child {
  font-size: 16px;
  font-weight: 600;
  color: var(--cart-text);
}

.cart-summary__fila--total .cart-summary__total-valor {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cart-text);
  transition: opacity 0.2s ease;
}

/* Botón principal */
.cart-page .cart-btn-primary {
  width: 100%;
  height: 52px;
  margin-top: var(--space-4);
  background: var(--cart-text);
  color: #FFFFFF;
  border-radius: var(--cart-radius-pill);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  box-shadow: var(--cart-shadow-sm);
  transition: background var(--cart-transition-slow), color var(--cart-transition-slow),
    transform var(--cart-transition-slow), box-shadow var(--cart-transition-slow);
}

.cart-btn-primary:hover {
  background: var(--cart-mint);
  color: var(--cart-text);
  transform: translateY(-2px);
  box-shadow: var(--cart-shadow-lg);
}

.cart-btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.cart-summary__microcopy {
  margin-top: var(--space-2);
  text-align: center;
  font-size: 12px;
  color: var(--cart-text-tertiary);
}

/* Botón secundario */
.cart-page .cart-btn-secondary {
  width: 100%;
  height: 44px;
  margin-top: var(--space-3);
  background: transparent;
  border: 1px solid var(--cart-border);
  border-radius: var(--cart-radius-pill);
  color: var(--cart-text-secondary);
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--cart-transition), border-color var(--cart-transition);
}

.cart-btn-secondary:hover {
  background: var(--cart-surface-subtle);
  border-color: var(--cart-text-tertiary);
}

/* Indicadores de confianza */
.cart-trust {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--cart-divider);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cart-trust__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  color: var(--cart-text-tertiary);
}

.cart-trust__item svg {
  flex-shrink: 0;
  color: var(--cart-text-tertiary);
}

/* === ESTADO VACÍO === */
.cart-empty {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6) var(--space-3);
}

.cart-empty[hidden] {
  display: none;
}

.cart-empty__icono {
  color: var(--cart-border);
}

.cart-empty__titulo {
  margin-top: var(--space-4);
  font-size: 24px;
  font-weight: 600;
}

.cart-empty__subtitulo {
  margin-top: var(--space-2);
  max-width: 400px;
  font-size: 15px;
  color: var(--cart-text-secondary);
}

.cart-page .cart-empty__boton {
  margin-top: var(--space-5);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 var(--space-5);
  background: var(--cart-text);
  color: #FFFFFF;
  border-radius: var(--cart-radius-pill);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  box-shadow: var(--cart-shadow-sm);
  transition: background var(--cart-transition-slow), color var(--cart-transition-slow),
    transform var(--cart-transition-slow), box-shadow var(--cart-transition-slow);
}

.cart-empty__boton:hover {
  background: var(--cart-mint);
  color: var(--cart-text);
  transform: translateY(-2px);
  box-shadow: var(--cart-shadow-lg);
}

/* Oculta la columna de resumen cuando el carrito está vacío */
.cart-layout.cart-layout--vacio .cart-summary {
  display: none;
}

.cart-layout.cart-layout--vacio .cart-main {
  grid-column: 1 / -1;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .cart-layout {
    grid-template-columns: minmax(0, 60%) minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .cart-breadcrumb__inner {
    padding: var(--space-3) var(--space-4);
  }

  .cart-layout {
    grid-template-columns: 1fr;
    padding: var(--space-4);
    gap: var(--space-4);
  }

  .cart-title {
    font-size: 24px;
  }

  .cart-summary {
    position: static;
  }

  .cart-item {
    padding: var(--space-3);
    gap: var(--space-3);
  }

  .cart-item__imagen-wrap {
    width: 72px;
    height: 72px;
  }

  .cart-item__subtotal {
    width: auto;
  }
}

@media (max-width: 560px) {
  .cart-item {
    flex-wrap: wrap;
  }

  .cart-item__info {
    flex-basis: calc(100% - 88px);
  }

  .cart-item__stepper {
    order: 3;
    margin-left: 88px;
  }

  .cart-item__subtotal {
    order: 4;
    margin-left: auto;
  }

  .cart-item__eliminar {
    order: 2;
  }
}