/**
 * Carrito AJAX - Estilos Optimizados v3.0
 * Humo Sagrado Theme
 * * Diseño moderno, responsive y accesible
 * Optimizado para rendimiento y UX
 */

/* ========================================
   Variables CSS
   ======================================== */
:root {
  /* Colores principales */
  --cart-primary: #2c3e50;
  --cart-primary-hover: #34495e;
  --cart-secondary: #3498db;
  --cart-secondary-hover: #2980b9;
  --cart-success: #27ae60;
  --cart-success-hover: #229954;
  --cart-warning: #f39c12;
  --cart-warning-hover: #e67e22;
  --cart-danger: #e74c3c;
  --cart-danger-hover: #c0392b;

  /* Colores de fondo */
  --cart-bg: #ffffff;
  --cart-bg-secondary: #f8f9fa;
  --cart-bg-dark: #2c3e50;
  --cart-overlay: rgba(0, 0, 0, 0.5);

  /* Colores de texto */
  --cart-text: #2c3e50;
  --cart-text-light: #7f8c8d;
  --cart-text-white: #ffffff;

  /* Bordes */
  --cart-border: #e9ecef;
  --cart-border-dark: #dee2e6;
  --cart-radius: 8px;
  --cart-radius-small: 4px;
  --cart-radius-large: 12px;

  /* Sombras */
  --cart-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --cart-shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
  --cart-shadow-large: 0 10px 40px rgba(0, 0, 0, 0.2);

  /* Espaciado */
  --cart-spacing-xs: 0.25rem;
  --cart-spacing-sm: 0.5rem;
  --cart-spacing-md: 1rem;
  --cart-spacing-lg: 1.5rem;
  --cart-spacing-xl: 2rem;
  --cart-spacing-xxl: 3rem;

  /* Tipografía */
  --cart-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --cart-font-size-xs: 0.75rem;
  --cart-font-size-sm: 0.875rem;
  --cart-font-size-md: 1rem;
  --cart-font-size-lg: 1.125rem;
  --cart-font-size-xl: 1.25rem;
  --cart-font-weight-normal: 400;
  --cart-font-weight-medium: 500;
  --cart-font-weight-bold: 600;

  /* Transiciones */
  --cart-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --cart-transition-fast: all 0.15s ease-out;
  --cart-transition-slow: all 0.5s ease-in-out;

  /* Z-index */
  --cart-z-overlay: 1100;
  --cart-z-drawer: 1101;
  --cart-z-loading: 1002;

  /* Dimensiones */
  --cart-drawer-width: 420px;
  --cart-drawer-width-mobile: 100vw;
  --cart-item-height: auto;
  --cart-button-height: 44px;
}

/* ========================================
   Reset y Base
   ======================================== */
.cart-drawer *,
.cart-drawer *::before,
.cart-drawer *::after {
  box-sizing: border-box;
}

.cart-drawer {
  font-family: var(--cart-font-family);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Overlay del Carrito
   ======================================== */
.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--cart-overlay);
  z-index: var(--cart-z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: var(--cart-transition);
  backdrop-filter: blur(2px);
}

.cart-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   *** SOLUCIÓN AL PROBLEMA DE POSICIÓN ***
   ======================================== 
   El uso de 'position: fixed' saca al carrito del flujo normal de la página 
   (donde termina el footer) y lo ancla a la ventana del navegador. 
*/
.cart-drawer {
  /* ESTA ES LA PROPIEDAD CLAVE: Fija el elemento a la ventana (viewport) */
  position: fixed;

  top: 0;
  right: 0;
  width: var(--cart-drawer-width);
  height: 100vh;
  background: var(--cart-bg);
  /* z-index alto para que esté por encima de todo */
  z-index: var(--cart-z-drawer);

  /* Esto lo oculta inicialmente fuera de la pantalla */
  transform: translateX(100%);

  transition: var(--cart-transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--cart-shadow-large);
  overflow: hidden;
}

.cart-drawer.active {
  transform: translateX(0);
  /* Esto lo desliza hacia la vista */
}

/* ========================================
   Header del Carrito
   ======================================== */
.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--cart-spacing-lg);
  border-bottom: 1px solid var(--cart-border);
  background: var(--cart-bg);
  position: sticky;
  top: 0;
  z-index: 1102;
}

.cart-title {
  font-size: var(--cart-font-size-lg);
  font-weight: var(--cart-font-weight-bold);
  color: var(--cart-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--cart-spacing-sm);
}

.cart-title svg {
  width: 20px;
  height: 20px;
  color: var(--cart-primary);
}

.cart-close {
  background: none;
  border: none;
  padding: var(--cart-spacing-sm);
  cursor: pointer;
  border-radius: var(--cart-radius-small);
  transition: var(--cart-transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cart-text-light);
}

.cart-close:hover {
  background: var(--cart-bg-secondary);
  color: var(--cart-text);
}

.cart-close svg {
  width: 20px;
  height: 20px;
}

/* ========================================
   Contenido del Carrito
   ======================================== */
.cart-content {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  height: auto !important;
  max-height: none !important;
  min-height: 0 !important;
  scrollbar-width: thin;
  scrollbar-color: var(--cart-border) transparent;
}

.cart-items-wrapper {
  padding: var(--cart-spacing-md);
  height: auto !important;
  max-height: none !important;
  min-height: 0 !important;
  overflow: visible !important;
  display: block !important;
}

.cart-items-list {
  margin-bottom: var(--cart-spacing-lg);
  height: auto !important;
  max-height: none !important;
  min-height: 0 !important;
  overflow: visible !important;
  display: block !important;
}

.cart-content::-webkit-scrollbar {
  width: 6px;
}

.cart-content::-webkit-scrollbar-track {
  background: transparent;
}

.cart-content::-webkit-scrollbar-thumb {
  background: var(--cart-border);
  border-radius: 3px;
}

.cart-content::-webkit-scrollbar-thumb:hover {
  background: var(--cart-border-dark);
}

/* ========================================
   Carrito Vacío
   ======================================== */
.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--cart-spacing-xxl);
  height: 100%;
  min-height: 300px;
}

.cart-empty-icon {
  margin-bottom: var(--cart-spacing-lg);
  opacity: 0.5;
}

.cart-empty-icon svg {
  width: 64px;
  height: 64px;
  color: var(--cart-text-light);
}

.cart-empty h3 {
  font-size: var(--cart-font-size-lg);
  font-weight: var(--cart-font-weight-bold);
  color: var(--cart-text);
  margin: 0 0 var(--cart-spacing-sm) 0;
}

.cart-empty p {
  font-size: var(--cart-font-size-sm);
  color: var(--cart-text-light);
  margin: 0 0 var(--cart-spacing-lg) 0;
  max-width: 280px;
}

.cart-continue-shopping {
  display: inline-flex;
  align-items: center;
  gap: var(--cart-spacing-sm);
  padding: var(--cart-spacing-sm) var(--cart-spacing-lg);
  background: var(--cart-primary);
  color: var(--cart-text-white);
  text-decoration: none;
  border-radius: var(--cart-radius);
  font-weight: var(--cart-font-weight-medium);
  transition: var(--cart-transition-fast);
}

.cart-continue-shopping:hover {
  background: var(--cart-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--cart-shadow-hover);
}

/* ========================================
   Items del Carrito
   ======================================== */
.cart-items-wrapper {
  padding: var(--cart-spacing-md);
}

.cart-items-list {
  margin-bottom: var(--cart-spacing-lg);
}

.cart-item {
  display: flex;
  gap: var(--cart-spacing-md);
  padding: var(--cart-spacing-md);
  border: 1px solid var(--cart-border);
  border-radius: var(--cart-radius);
  margin-bottom: var(--cart-spacing-md);
  background: var(--cart-bg);
  transition: var(--cart-transition-fast);
  position: relative;
}

.cart-item:hover {
  border-color: var(--cart-border-dark);
  box-shadow: var(--cart-shadow);
}

.cart-item:last-child {
  margin-bottom: 0;
}

.cart-item:first-child {
  padding-top: calc(var(--cart-spacing-md) + var(--cart-spacing-sm));
}

/* Imagen del producto */
.cart-item-image {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--cart-radius-small);
  overflow: hidden;
  background: var(--cart-bg-secondary);
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--cart-transition-fast);
}

.cart-item-image:hover img {
  transform: scale(1.05);
}

/* Detalles del producto */
.cart-item-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--cart-spacing-sm);
}

.cart-item-info {
  flex: 1;
}

.cart-item-name {
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  color: var(--cart-text);
  margin: 0 0 var(--cart-spacing-xs) 0;
  line-height: 1.4;
}

.cart-item-name a {
  color: inherit;
  text-decoration: none;
  transition: var(--cart-transition-fast);
}

.cart-item-name a:hover {
  color: var(--cart-primary);
}

.cart-item-variation {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cart-spacing-xs);
  margin-bottom: var(--cart-spacing-xs);
}

.variation-item {
  font-size: var(--cart-font-size-xs);
  color: var(--cart-text-light);
  background: var(--cart-bg-secondary);
  padding: 2px var(--cart-spacing-xs);
  border-radius: var(--cart-radius-small);
}

.cart-item-price {
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  color: var(--cart-primary);
}

/* Controles del item */
.cart-item-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cart-spacing-sm);
}

.quantity-controls {
  display: flex;
  align-items: center;
  border: 1px solid var(--cart-border);
  border-radius: var(--cart-radius-small);
  overflow: hidden;
  background: var(--cart-bg);
}

.quantity-btn {
  background: none;
  border: none;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--cart-transition-fast);
  color: var(--cart-text-light);
}

.quantity-btn:hover:not(:disabled) {
  background: var(--cart-bg-secondary);
  color: var(--cart-text);
}

.quantity-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.quantity-btn svg {
  width: 14px;
  height: 14px;
}

.quantity-input {
  border: none;
  width: 50px;
  height: 32px;
  text-align: center;
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  background: transparent;
  color: var(--cart-text);
  outline: none;
}

.cart-item-subtotal {
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-bold);
  color: var(--cart-text);
  min-width: 60px;
  text-align: right;
}

/* Botón eliminar */
.cart-item-remove {
  position: absolute;
  top: var(--cart-spacing-sm);
  right: var(--cart-spacing-sm);
  background: none;
  border: none;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--cart-radius-small);
  transition: var(--cart-transition-fast);
  color: var(--cart-text-light);
}

.cart-item-remove:hover {
  background: var(--cart-danger);
  color: var(--cart-text-white);
}

.cart-item-remove svg {
  width: 14px;
  height: 14px;
}

/* ========================================
   Resumen del Carrito
   ======================================== */
.cart-summary {
  background: var(--cart-bg-secondary);
  border-radius: var(--cart-radius);
  padding: var(--cart-spacing-md);
  margin-bottom: var(--cart-spacing-lg);
}

.cart-summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--cart-spacing-xs) 0;
}

.cart-summary-row:not(:last-child) {
  border-bottom: 1px solid var(--cart-border);
}

.cart-summary-row.total {
  font-weight: var(--cart-font-weight-bold);
  font-size: var(--cart-font-size-lg);
  color: var(--cart-primary);
  padding-top: var(--cart-spacing-sm);
  margin-top: var(--cart-spacing-xs);
}

.cart-summary-label {
  font-size: var(--cart-font-size-sm);
  color: var(--cart-text);
}

.cart-summary-value {
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  color: var(--cart-text);
}

/* ========================================
   Cupones
   ======================================== */
.cart-coupons {
  margin-bottom: var(--cart-spacing-lg);
}

.coupon-form {
  margin-bottom: var(--cart-spacing-md);
}

.coupon-input-group {
  display: flex;
  gap: var(--cart-spacing-sm);
}

.coupon-input {
  flex: 1;
  padding: var(--cart-spacing-sm) var(--cart-spacing-md);
  border: 1px solid var(--cart-border);
  border-radius: var(--cart-radius-small);
  font-size: var(--cart-font-size-sm);
  background: var(--cart-bg);
  color: var(--cart-text);
  transition: var(--cart-transition-fast);
}

.coupon-input:focus {
  outline: none;
  border-color: var(--cart-primary);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.coupon-apply {
  padding: var(--cart-spacing-sm) var(--cart-spacing-md);
  background: var(--cart-secondary);
  color: var(--cart-text-white);
  border: none;
  border-radius: var(--cart-radius-small);
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  cursor: pointer;
  transition: var(--cart-transition-fast);
  display: flex;
  align-items: center;
  gap: var(--cart-spacing-xs);
}

.coupon-apply:hover {
  background: var(--cart-secondary-hover);
}

.coupon-apply svg {
  width: 16px;
  height: 16px;
}

/* Cupones aplicados */
.applied-coupons {
  display: flex;
  flex-direction: column;
  gap: var(--cart-spacing-sm);
}

.applied-coupon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--cart-spacing-sm) var(--cart-spacing-md);
  background: var(--cart-success);
  color: var(--cart-text-white);
  border-radius: var(--cart-radius-small);
  font-size: var(--cart-font-size-sm);
}

.coupon-info {
  display: flex;
  align-items: center;
  gap: var(--cart-spacing-sm);
}

.coupon-discount {
  font-weight: var(--cart-font-weight-bold);
}

.coupon-remove {
  background: none;
  border: none;
  color: var(--cart-text-white);
  cursor: pointer;
  padding: var(--cart-spacing-xs);
  border-radius: var(--cart-radius-small);
  transition: var(--cart-transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.coupon-remove:hover {
  background: rgba(255, 255, 255, 0.2);
}

.coupon-remove svg {
  width: 14px;
  height: 14px;
}

/* ========================================
   Botones de Acción
   ======================================== */
.cart-actions {
  display: flex;
  flex-direction: column;
  gap: var(--cart-spacing-sm);
  margin-bottom: var(--cart-spacing-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cart-spacing-sm);
  padding: var(--cart-spacing-md) var(--cart-spacing-lg);
  border: none;
  border-radius: var(--cart-radius);
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: var(--cart-transition-fast);
  min-height: var(--cart-button-height);
  text-align: center;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: var(--cart-primary);
  color: var(--cart-text-white);
}

.btn-primary:hover {
  background: var(--cart-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--cart-shadow-hover);
}

.btn-secondary {
  background: var(--cart-secondary);
  color: var(--cart-text-white);
}

.btn-secondary:hover {
  background: var(--cart-secondary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--cart-text);
  border: 1px solid var(--cart-border);
}

.btn-outline:hover {
  background: var(--cart-bg-secondary);
  border-color: var(--cart-border-dark);
}

/* ========================================
   Envío Gratis
   ======================================== */
.free-shipping-notice {
  background: linear-gradient(135deg, var(--cart-success), var(--cart-success-hover));
  color: var(--cart-text-white);
  padding: var(--cart-spacing-md);
  border-radius: var(--cart-radius);
  margin-bottom: var(--cart-spacing-lg);
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--cart-spacing-sm);
}

.progress-fill {
  height: 100%;
  background: var(--cart-text-white);
  border-radius: 3px;
  transition: width 0.5s ease-out;
}

.progress-text {
  display: flex;
  align-items: center;
  gap: var(--cart-spacing-sm);
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  margin: 0;
}

.progress-text svg {
  width: 16px;
  height: 16px;
}

.free-shipping-achieved {
  display: flex;
  align-items: center;
  gap: var(--cart-spacing-sm);
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
}

.free-shipping-achieved svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   Estados de Carga
   ======================================== */
.cart-loading {
  position: relative;
  pointer-events: none;
}

.cart-loading::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  z-index: var(--cart-z-loading);
  border-radius: inherit;
}

.cart-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--cart-border);
  border-top-color: var(--cart-primary);
  border-radius: 50%;
  animation: cart-spin 1s linear infinite;
  z-index: var(--cart-z-loading);
}

@keyframes cart-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Notificaciones
   ======================================== */
.cart-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: var(--cart-spacing-md) var(--cart-spacing-lg);
  border-radius: var(--cart-radius);
  color: var(--cart-text-white);
  font-size: var(--cart-font-size-sm);
  font-weight: var(--cart-font-weight-medium);
  z-index: 9999;
  transform: translateX(100%);
  transition: var(--cart-transition);
  max-width: 300px;
  box-shadow: var(--cart-shadow-large);
}

.cart-notification.show {
  transform: translateX(0);
}

.cart-notification.success {
  background: var(--cart-success);
}

.cart-notification.error {
  background: var(--cart-danger);
}

.cart-notification.warning {
  background: var(--cart-warning);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  :root {
    --cart-drawer-width: var(--cart-drawer-width-mobile);
    --cart-spacing-md: 0.75rem;
    --cart-spacing-lg: 1rem;
  }

  .cart-drawer {
    width: 100vw;
  }

  .cart-item {
    flex-direction: column;
    gap: var(--cart-spacing-sm);
  }

  .cart-item-image {
    width: 100%;
    height: 120px;
  }

  .cart-item-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--cart-spacing-sm);
  }

  .quantity-controls {
    align-self: flex-start;
  }

  .cart-item-subtotal {
    text-align: left;
  }

  .cart-item-remove {
    position: static;
    align-self: flex-end;
    margin-top: var(--cart-spacing-sm);
  }

  .cart-actions {
    position: sticky;
    bottom: 0;
    background: var(--cart-bg);
    padding: var(--cart-spacing-md);
    margin: 0 calc(-1 * var(--cart-spacing-md));
    border-top: 1px solid var(--cart-border);
  }
}

@media (max-width: 480px) {
  :root {
    --cart-spacing-sm: 0.375rem;
    --cart-spacing-md: 0.5rem;
    --cart-font-size-sm: 0.8125rem;
  }

  .cart-header {
    padding: var(--cart-spacing-md);
  }

  .cart-title {
    font-size: var(--cart-font-size-md);
  }

  .cart-items-wrapper {
    padding: var(--cart-spacing-sm);
  }

  .cart-item {
    padding: var(--cart-spacing-sm);
  }
}

/* ========================================
   Modo Oscuro
   ======================================== */
@media (prefers-color-scheme: dark) {
  :root {
    --cart-bg: #1a1a1a;
    --cart-bg-secondary: #2d2d2d;
    --cart-bg-dark: #0f0f0f;
    --cart-text: #ffffff;
    --cart-text-light: #a0a0a0;
    --cart-border: #404040;
    --cart-border-dark: #606060;
    --cart-overlay: rgba(0, 0, 0, 0.8);
  }
}

/* ========================================
   Accesibilidad
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.cart-drawer :focus {
  outline: 2px solid var(--cart-primary);
  outline-offset: 2px;
}

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

/* ========================================
   Utilidades
   ======================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.cart-hidden {
  display: none !important;
}

.cart-disabled {
  opacity: 0.6;
  pointer-events: none;
}

/* ========================================
   Animaciones de Entrada
   ======================================== */
@keyframes cart-fade-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cart-slide-in {
  from {
    transform: translateX(100%);
  }

  to {
    transform: translateX(0);
  }
}

.cart-item {
  animation: cart-fade-in 0.3s ease-out;
}

.cart-drawer.active {
  /* La animación de entrada debe coincidir con la transición del drawer para consistencia */
  animation: cart-slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   *** IMPORTANTE: Bloquear scroll del body ***
   ========================================
   Añade esta regla a tu hoja de estilos principal (no solo la del carrito) 
   para evitar que la página principal se mueva al abrir el carrito.
*/
body.cart-drawer-open {
  overflow: hidden !important;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {

  .cart-drawer,
  .cart-overlay {
    display: none !important;
  }
}