/**
 * tienda.css — Tienda Oficial Styles
 * Dark theme store with professional azul-cian palette
 */

:root {
  --tienda-primary: #0d2c54;
  --tienda-accent: #00d4ff;
  --tienda-success: #2ecc71;
  --tienda-warning: #f39c12;
  --tienda-danger: #e74c3c;
  --tienda-card-bg: #18232c;
  --tienda-hover-bg: #243847;
  --tienda-border: #3a4a58;
  --tienda-text-light: #e1e1e1;
  --tienda-text-muted: #a0a0a0;
  --tienda-gradient-start: #0d2c54;
  --tienda-gradient-end: #00d4ff;
}

/* ====================================================================== */
/* GENERAL STYLES */
/* ====================================================================== */

.tienda-page {
  background-color: #0f1419;
  color: var(--tienda-text-light);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  min-height: 100vh;
}

.tienda-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* ====================================================================== */
/* HERO / HEADER */
/* ====================================================================== */

.tienda-hero {
  background: linear-gradient(135deg, var(--tienda-gradient-start), var(--tienda-gradient-end));
  padding: 4rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 3rem;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.15);
}

.tienda-hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.5px;
}

.tienda-hero p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

@media (max-width: 640px) {
  .tienda-hero {
    padding: 2.5rem 1rem;
  }
  .tienda-hero h1 {
    font-size: 1.75rem;
  }
}

/* ====================================================================== */
/* BREADCRUMB */
/* ====================================================================== */

.tienda-breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.tienda-breadcrumb a {
  color: var(--tienda-text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.tienda-breadcrumb a:hover {
  color: var(--tienda-accent);
}

/* ====================================================================== */
/* CATEGORÍAS / FILTERS */
/* ====================================================================== */

.tienda-categorias {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  align-items: center;
}

.tienda-categoria-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--tienda-border);
  background-color: transparent;
  color: var(--tienda-text-light);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.tienda-categoria-btn:hover {
  border-color: var(--tienda-accent);
  color: var(--tienda-accent);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.25);
}

.tienda-categoria-btn.active {
  background-color: var(--tienda-accent);
  color: #000;
  border-color: var(--tienda-accent);
  font-weight: 600;
}

/* ====================================================================== */
/* GRID PRODUCTOS */
/* ====================================================================== */

.tienda-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 1024px) {
  .tienda-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .tienda-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

/* ====================================================================== */
/* TARJETA PRODUCTO */
/* ====================================================================== */

.tienda-producto-card {
  background-color: var(--tienda-card-bg);
  border: 1px solid var(--tienda-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}

.tienda-producto-card:hover {
  border-color: var(--tienda-accent);
  box-shadow: 0 16px 40px rgba(0, 212, 255, 0.2);
  transform: translateY(-4px);
}

.tienda-producto-imagen-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
  background-color: var(--tienda-hover-bg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tienda-producto-imagen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tienda-producto-card:hover .tienda-producto-imagen {
  transform: scale(1.08);
}

.tienda-producto-imagen-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 3rem;
  background: linear-gradient(135deg, var(--tienda-hover-bg), var(--tienda-border));
}

.tienda-producto-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 0.25rem 0.75rem;
  background-color: var(--tienda-accent);
  color: #000;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tienda-producto-content {
  padding: 1rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.tienda-producto-nombre {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--tienda-text-light);
  line-height: 1.3;
  flex-grow: 1;
}

.tienda-producto-precio {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--tienda-accent);
  margin: 0.75rem 0 0 0;
}

.tienda-producto-precio-original {
  font-size: 0.875rem;
  color: var(--tienda-text-muted);
  text-decoration: line-through;
  margin-right: 0.5rem;
}

.tienda-producto-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  margin-top: 0.75rem;
  background-color: transparent;
  border: 1px solid var(--tienda-accent);
  color: var(--tienda-accent);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tienda-producto-link:hover {
  background-color: var(--tienda-accent);
  color: #000;
}

/* ====================================================================== */
/* PRODUCTO DETALLE */
/* ====================================================================== */

.tienda-detalle-container {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--tienda-card-bg);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--tienda-border);
}

.tienda-detalle-header {
  margin-bottom: 1.5rem;
}

.tienda-detalle-back {
  color: var(--tienda-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  transition: color 0.2s ease;
}

.tienda-detalle-back:hover {
  color: var(--tienda-accent);
}

.tienda-detalle-titulo {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--tienda-text-light);
  margin: 0 0 0.5rem 0;
}

.tienda-detalle-precio {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--tienda-accent);
  margin: 0.5rem 0 1rem 0;
}

.tienda-detalle-descripcion {
  color: var(--tienda-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 1rem 0;
}

/* ====================================================================== */
/* GALERÍA + VISOR 3D — DETALLE PRODUCTO                                   */
/* ====================================================================== */

.td-media {
  margin-bottom: 2rem;
}

.td-galeria-principal {
  width: 100%;
  height: 420px;
  background: var(--tienda-hover-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--tienda-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.td-img-principal {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.5rem;
}

.td-img-fallback {
  font-size: 5rem;
  color: var(--tienda-accent);
}

.td-thumbs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.td-thumb {
  width: 72px;
  height: 72px;
  border-radius: 8px;
  border: 2px solid var(--tienda-border);
  overflow: hidden;
  cursor: pointer;
  object-fit: cover;
  background: var(--tienda-hover-bg);
  transition: border-color 0.2s, transform 0.15s;
  padding: 0;
}

.td-thumb:hover {
  border-color: var(--tienda-accent);
  transform: translateY(-2px);
}

.td-thumb.active {
  border-color: var(--tienda-accent);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.3);
}

.td-thumb-3d {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f3460, #1a5276);
  color: var(--tienda-accent);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.td-thumb-3d:hover {
  background: linear-gradient(135deg, #1a5276, #2471a3);
}

.td-viewer3d {
  margin-bottom: 1.5rem;
}

.td-viewer3d-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.td-btn-volver-fotos {
  background: none;
  border: 1px solid var(--tienda-border);
  color: var(--tienda-text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  white-space: nowrap;
}

.td-btn-volver-fotos:hover {
  border-color: var(--tienda-accent);
  color: var(--tienda-accent);
}

.td-3d-label {
  font-size: 0.78rem;
  color: var(--tienda-text-muted);
  flex: 1;
}

.td-btn-reset3d {
  background: none;
  border: 1px solid var(--tienda-border);
  color: var(--tienda-text-muted);
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.82rem;
  transition: all 0.2s;
  white-space: nowrap;
}

.td-btn-reset3d:hover {
  border-color: var(--tienda-accent);
  color: var(--tienda-accent);
}

.td-canvas-container {
  width: 100%;
  height: 420px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #ddd;
  background: #f0f0f0;
}

.td-canvas-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* legado */
.tienda-imagen-fallback {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

/* ====================================================================== */
/* FORMULARIO COMPRA */
/* ====================================================================== */

.tienda-form-group {
  margin-bottom: 1.5rem;
}

.tienda-form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--tienda-text-muted);
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.tienda-form-control,
.tienda-select {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--tienda-hover-bg);
  border: 1px solid var(--tienda-border);
  border-radius: 6px;
  color: var(--tienda-text-light);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  font-family: inherit;
}

.tienda-form-control:focus,
.tienda-select:focus {
  outline: none;
  border-color: var(--tienda-accent);
  background-color: var(--tienda-card-bg);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.tienda-select option {
  background-color: var(--tienda-card-bg);
  color: var(--tienda-text-light);
}

.tienda-cantidad-input {
  width: 100px;
  padding: 0.75rem;
  text-align: center;
}

/* ====================================================================== */
/* BOTÓN COMPRA */
/* ====================================================================== */

.tienda-btn-agregar {
  width: 100%;
  padding: 1rem;
  background-color: var(--tienda-accent);
  color: #000;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: 1rem;
}

.tienda-btn-agregar:hover {
  background-color: #00c2e8;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
}

.tienda-btn-agregar:active {
  transform: translateY(0);
}

.tienda-btn-primary {
  background-color: var(--tienda-accent);
  color: #000;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tienda-btn-primary:hover {
  background-color: #00c2e8;
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

/* ====================================================================== */
/* CARRITO */
/* ====================================================================== */

.tienda-carrito-vacio {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--tienda-text-muted);
}

.tienda-carrito-vacio h2 {
  font-size: 1.5rem;
  color: var(--tienda-text-light);
  margin-bottom: 1rem;
}

.tienda-carrito-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.tienda-carrito-item {
  background-color: var(--tienda-card-bg);
  border: 1px solid var(--tienda-border);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.tienda-carrito-item:hover {
  border-color: var(--tienda-accent);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.1);
}

.tienda-carrito-item-imagen {
  width: 80px;
  height: 80px;
  background-color: var(--tienda-hover-bg);
  border-radius: 6px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.tienda-carrito-item-imagen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tienda-carrito-item-info {
  flex: 1;
  min-width: 0;
}

.tienda-carrito-item-nombre {
  font-weight: 600;
  color: var(--tienda-text-light);
  margin: 0 0 0.25rem 0;
}

.tienda-carrito-item-variante {
  font-size: 0.85rem;
  color: var(--tienda-text-muted);
  margin: 0 0 0.5rem 0;
}

.tienda-carrito-item-precio {
  color: var(--tienda-accent);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.tienda-carrito-item-eliminar {
  background-color: transparent;
  border: 1px solid var(--tienda-danger);
  color: var(--tienda-danger);
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tienda-carrito-item-eliminar:hover {
  background-color: var(--tienda-danger);
  color: white;
}

/* ====================================================================== */
/* CARRITO RESUMEN */
/* ====================================================================== */

.tienda-carrito-resumen {
  background-color: var(--tienda-card-bg);
  border: 2px solid var(--tienda-border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.tienda-resumen-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--tienda-border);
}

.tienda-resumen-row:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.tienda-resumen-label {
  color: var(--tienda-text-muted);
  font-size: 0.95rem;
}

.tienda-resumen-valor {
  color: var(--tienda-text-light);
  font-weight: 500;
}

.tienda-resumen-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--tienda-accent);
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 2px solid var(--tienda-accent);
}

/* ====================================================================== */
/* CHECKOUT FORM */
/* ====================================================================== */

.tienda-checkout-container {
  max-width: 700px;
  margin: 0 auto;
}

.tienda-checkout-section {
  background-color: var(--tienda-card-bg);
  border: 1px solid var(--tienda-border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.tienda-checkout-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--tienda-text-light);
  margin: 0 0 1rem 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tienda-checkout-section.active {
  border-color: var(--tienda-accent);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

.tienda-checkout-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.tienda-checkout-form-row.full {
  grid-template-columns: 1fr;
}

@media (max-width: 640px) {
  .tienda-checkout-form-row {
    grid-template-columns: 1fr;
  }
}

/* ====================================================================== */
/* PROGRESS STEPS */
/* ====================================================================== */

.tienda-progress-steps {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  justify-content: space-between;
  position: relative;
}

.tienda-progress-steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--tienda-border);
  z-index: -1;
}

.tienda-progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
}

.tienda-progress-step-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--tienda-border);
  border: 2px solid var(--tienda-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tienda-text-muted);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.tienda-progress-step.active .tienda-progress-step-circle {
  background-color: var(--tienda-accent);
  border-color: var(--tienda-accent);
  color: #000;
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
}

.tienda-progress-step.completed .tienda-progress-step-circle {
  background-color: var(--tienda-success);
  border-color: var(--tienda-success);
  color: white;
}

.tienda-progress-step-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--tienda-text-muted);
  text-align: center;
  letter-spacing: 0.3px;
}

.tienda-progress-step.active .tienda-progress-step-label {
  color: var(--tienda-accent);
}

/* ====================================================================== */
/* INSTRUCCIONES PAGO */
/* ====================================================================== */

.tienda-instrucciones-pago {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 212, 255, 0.05));
  border: 1px solid var(--tienda-accent);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.tienda-instrucciones-pago h4 {
  color: var(--tienda-accent);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 1rem 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tienda-instrucciones-pago p {
  margin: 0.5rem 0;
  color: var(--tienda-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

.tienda-instrucciones-pago strong {
  color: var(--tienda-accent);
  font-weight: 600;
}

/* ====================================================================== */
/* PEDIDOS GRID */
/* ====================================================================== */

.tienda-pedidos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.tienda-pedido-card {
  background-color: var(--tienda-card-bg);
  border: 1px solid var(--tienda-border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.tienda-pedido-card:hover {
  border-color: var(--tienda-accent);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
  transform: translateY(-2px);
}

.tienda-pedido-numero {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--tienda-accent);
  margin: 0 0 0.75rem 0;
}

.tienda-pedido-info-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.tienda-pedido-info-label {
  color: var(--tienda-text-muted);
}

.tienda-pedido-info-valor {
  color: var(--tienda-text-light);
  font-weight: 500;
}

.tienda-pedido-total {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--tienda-accent);
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--tienda-border);
}

/* ====================================================================== */
/* ESTADO PEDIDO */
/* ====================================================================== */

.tienda-estado-pedido {
  background-color: var(--tienda-card-bg);
  border: 1px solid var(--tienda-border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.tienda-estado-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.tienda-estado-badge.pendiente {
  background-color: rgba(243, 156, 18, 0.2);
  color: var(--tienda-warning);
  border: 1px solid var(--tienda-warning);
}

.tienda-estado-badge.verificacion {
  background-color: rgba(52, 152, 219, 0.2);
  color: #3498db;
  border: 1px solid #3498db;
}

.tienda-estado-badge.confirmado {
  background-color: rgba(46, 204, 113, 0.2);
  color: var(--tienda-success);
  border: 1px solid var(--tienda-success);
}

.tienda-estado-badge.enviado {
  background-color: rgba(0, 212, 255, 0.2);
  color: var(--tienda-accent);
  border: 1px solid var(--tienda-accent);
}

.tienda-estado-badge.cancelado {
  background-color: rgba(231, 76, 60, 0.2);
  color: var(--tienda-danger);
  border: 1px solid var(--tienda-danger);
}

.tienda-estado-item {
  padding: 1rem;
  background-color: var(--tienda-hover-bg);
  border-radius: 6px;
  margin-bottom: 1rem;
  border-left: 4px solid var(--tienda-accent);
}

.tienda-estado-item-titulo {
  font-weight: 600;
  color: var(--tienda-text-light);
  margin: 0 0 0.5rem 0;
}

.tienda-estado-item-valor {
  color: var(--tienda-text-muted);
  font-size: 0.9rem;
}

/* ====================================================================== */
/* ALERTS / MESSAGES */
/* ====================================================================== */

.tienda-alert {
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  border-left: 4px solid;
}

.tienda-alert-success {
  background-color: rgba(46, 204, 113, 0.1);
  border-left-color: var(--tienda-success);
  color: var(--tienda-success);
}

.tienda-alert-error {
  background-color: rgba(231, 76, 60, 0.1);
  border-left-color: var(--tienda-danger);
  color: var(--tienda-danger);
}

.tienda-alert-warning {
  background-color: rgba(243, 156, 18, 0.1);
  border-left-color: var(--tienda-warning);
  color: var(--tienda-warning);
}

.tienda-alert-info {
  background-color: rgba(0, 212, 255, 0.1);
  border-left-color: var(--tienda-accent);
  color: var(--tienda-accent);
}

/* ====================================================================== */
/* FILE UPLOAD */
/* ====================================================================== */

.tienda-file-upload {
  position: relative;
  display: inline-block;
  width: 100%;
}

.tienda-file-input {
  display: none;
}

.tienda-file-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 2px dashed var(--tienda-accent);
  border-radius: 8px;
  background-color: rgba(0, 212, 255, 0.05);
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--tienda-accent);
  font-weight: 600;
}

.tienda-file-label:hover {
  background-color: rgba(0, 212, 255, 0.1);
  border-color: #00c2e8;
}

.tienda-file-input:focus + .tienda-file-label {
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}

/* ====================================================================== */
/* RESPONSIVO - MOBILE */
/* ====================================================================== */

@media (max-width: 640px) {
  .tienda-container {
    padding: 1rem;
  }

  .tienda-detalle-container {
    padding: 1rem;
  }

  .tienda-carrito-item {
    flex-direction: column;
  }

  .tienda-carrito-item-imagen {
    width: 100%;
    height: 200px;
  }

  .tienda-checkout-form-row {
    grid-template-columns: 1fr;
  }

  .tienda-progress-steps {
    gap: 0.5rem;
  }

  .tienda-progress-step-label {
    font-size: 0.65rem;
  }

  .tienda-btn-agregar {
    padding: 0.875rem;
    font-size: 0.95rem;
  }
}

/* ====================================================================== */
/* UTILIDADES */
/* ====================================================================== */

.tienda-text-center {
  text-align: center;
}

.tienda-mt-1 { margin-top: 0.5rem; }
.tienda-mt-2 { margin-top: 1rem; }
.tienda-mt-3 { margin-top: 1.5rem; }
.tienda-mt-4 { margin-top: 2rem; }

.tienda-mb-1 { margin-bottom: 0.5rem; }
.tienda-mb-2 { margin-bottom: 1rem; }
.tienda-mb-3 { margin-bottom: 1.5rem; }
.tienda-mb-4 { margin-bottom: 2rem; }

.tienda-p-1 { padding: 0.5rem; }
.tienda-p-2 { padding: 1rem; }
.tienda-p-3 { padding: 1.5rem; }
.tienda-p-4 { padding: 2rem; }

.tienda-hidden {
  display: none;
}

.tienda-invisible {
  visibility: hidden;
}