/* =====================================================
   SISTEMA DE SKELETON LOADING - PMC WEB
   ===================================================== */

/* Variables para skeleton loading */
:root {
    --skeleton-bg: #f0f0f0;
    --skeleton-shine: #e0e0e0;
    --skeleton-border-radius: 8px;
    --skeleton-animation-duration: 1.5s;
}

/* Animación de shimmer (brillo) */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Clase base para skeleton */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--skeleton-bg) 0%,
        var(--skeleton-bg) 40%,
        var(--skeleton-shine) 50%,
        var(--skeleton-bg) 60%,
        var(--skeleton-bg) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer var(--skeleton-animation-duration) infinite linear;
    border-radius: var(--skeleton-border-radius);
    position: relative;
    overflow: hidden;
}

/* Skeleton para texto */
.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.skeleton-text.large {
    height: 24px;
}

.skeleton-text.small {
    height: 12px;
}

.skeleton-text.w-75 {
    width: 75%;
}

.skeleton-text.w-50 {
    width: 50%;
}

.skeleton-text.w-25 {
    width: 25%;
}

/* Skeleton para títulos */
.skeleton-title {
    height: 32px;
    width: 70%;
    margin-bottom: 16px;
    border-radius: 6px;
}

/* Skeleton para imágenes cuadradas */
.skeleton-image {
    width: 100%;
    padding-bottom: 100%; /* Aspecto 1:1 */
    border-radius: var(--skeleton-border-radius);
}

/* Skeleton para imágenes rectangulares */
.skeleton-image-rect {
    width: 100%;
    height: 200px;
    border-radius: var(--skeleton-border-radius);
}

/* Skeleton para círculos (avatares, etc.) */
.skeleton-circle {
    border-radius: 50%;
    width: 40px;
    height: 40px;
}

.skeleton-circle.large {
    width: 60px;
    height: 60px;
}

.skeleton-circle.small {
    width: 24px;
    height: 24px;
}

/* Skeleton para botones */
.skeleton-button {
    height: 44px;
    width: 120px;
    border-radius: 6px;
}

.skeleton-button.large {
    height: 52px;
    width: 160px;
}

.skeleton-button.full-width {
    width: 100%;
}

/* =====================================================
   SKELETON PARA TARJETAS DE PRODUCTOS
   ===================================================== */

.skeleton-product-card {
    background: white;
    border-radius: 10px;
    padding: 0;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.skeleton-product-image-container {
    width: 100%;
    padding-bottom: 100%;
    position: relative;
}

.skeleton-product-image-container .skeleton {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 10px 10px 0 0;
}

.skeleton-product-content {
    padding: 16px;
}

.skeleton-product-colors {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.skeleton-product-title {
    height: 40px;
    margin-bottom: 12px;
    border-radius: 4px;
}

.skeleton-product-price {
    height: 24px;
    width: 80px;
    margin-bottom: 8px;
    border-radius: 4px;
}

/* =====================================================
   SKELETON PARA HOME - CAROUSEL
   ===================================================== */

.skeleton-home-carousel {
    display: flex;
    gap: 20px;
    padding: 20px 115px;
}

/* Versión sin padding para uso dentro de contenedores que ya tienen padding */
.skeleton-home-carousel-no-padding {
    display: flex;
    gap: 20px;
    padding: 20px 0;
}

.skeleton-home-carousel .skeleton-product-card {
    flex: 0 0 300px;
    min-width: 300px;
}

/* =====================================================
   SKELETON PARA DETALLE DE PRODUCTO
   ===================================================== */

.skeleton-detail-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 20px 115px;
}

/* Versión sin padding para uso dentro de contenedores que ya tienen padding */
.skeleton-detail-container-no-padding {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 20px 0;
}

.skeleton-detail-images {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skeleton-detail-main-image {
    width: 100%;
    padding-bottom: 100%;
    position: relative;
}

.skeleton-detail-main-image .skeleton {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.skeleton-detail-thumbnails {
    display: flex;
    gap: 12px;
}

.skeleton-detail-thumbnail {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.skeleton-detail-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skeleton-detail-badges {
    display: flex;
    gap: 8px;
}

.skeleton-detail-badge {
    width: 80px;
    height: 28px;
    border-radius: 14px;
}

.skeleton-detail-title {
    height: 48px;
    width: 90%;
    border-radius: 6px;
}

.skeleton-detail-description {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-detail-price {
    height: 36px;
    width: 120px;
    border-radius: 6px;
}

.skeleton-detail-specs {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skeleton-detail-spec-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-detail-colors {
    display: flex;
    gap: 12px;
}

.skeleton-detail-actions {
    display: flex;
    gap: 12px;
}

/* =====================================================
   SKELETON PARA GRID DE PRODUCTOS
   ===================================================== */

.skeleton-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    padding: 20px 115px;
}

/* Versión sin padding para uso dentro de contenedores que ya tienen padding */
.skeleton-products-grid-no-padding {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    padding: 20px 0;
}

/* =====================================================
   SKELETON PARA LISTA DE ITEMS
   ===================================================== */

.skeleton-list-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: white;
    border-radius: 8px;
    margin-bottom: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.skeleton-list-image {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: 8px;
}

.skeleton-list-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-list-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
}

/* =====================================================
   SKELETON PARA CATEGORÍAS
   ===================================================== */

.skeleton-category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 0 115px;
}

/* Versión sin padding para uso dentro de contenedores que ya tienen padding */
.skeleton-category-list-no-padding {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-category-item {
    height: 48px;
    border-radius: 6px;
}

/* =====================================================
   SKELETON PARA TABLAS
   ===================================================== */

.skeleton-table {
    width: 100%;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.skeleton-table-header {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: #f8f9fa;
}

.skeleton-table-row {
    display: flex;
    gap: 16px;
    padding: 16px;
    border-bottom: 1px solid #e9ecef;
}

.skeleton-table-row:last-child {
    border-bottom: none;
}

.skeleton-table-cell {
    height: 20px;
    flex: 1;
    border-radius: 4px;
}

.skeleton-table-cell.small {
    flex: 0 0 80px;
}

.skeleton-table-cell.medium {
    flex: 0 0 120px;
}

/* =====================================================
   SKELETON PARA FILTROS
   ===================================================== */

.skeleton-filter-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 16px;
}

.skeleton-filter-header {
    height: 36px;
    border-radius: 6px;
}

.skeleton-filter-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skeleton-filter-option {
    height: 24px;
    width: 100%;
    border-radius: 4px;
}

/* =====================================================
   SKELETON PARA BANNERS
   ===================================================== */

.skeleton-banner {
    width: 100%;
    height: 400px;
    border-radius: 12px;
    margin-bottom: 24px;
}

.skeleton-banner.small {
    height: 200px;
}

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

/* Ocultar contenido mientras carga */
.skeleton-loading {
    pointer-events: none;
    user-select: none;
}

/* Fade in cuando el contenido está listo */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

/* Contenedor de skeleton con altura mínima */
.skeleton-container {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* =====================================================
   RESPONSIVE - MÓVIL
   ===================================================== */

@media (max-width: 1600px) {
    .skeleton-products-grid,
    .skeleton-home-carousel,
    .skeleton-detail-container,
    .skeleton-category-list {
        padding-left: 50px;
        padding-right: 50px;
    }
}

@media (max-width: 768px) {
    .skeleton-detail-container,
    .skeleton-detail-container-no-padding {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .skeleton-products-grid,
    .skeleton-products-grid-no-padding {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 16px;
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .skeleton-home-carousel,
    .skeleton-home-carousel-no-padding {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .skeleton-category-list,
    .skeleton-category-list-no-padding {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .skeleton-home-carousel .skeleton-product-card {
        flex: 0 0 240px;
        min-width: 240px;
    }
    
    .skeleton-list-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .skeleton-list-image {
        width: 100%;
        height: 180px;
    }
    
    .skeleton-list-actions {
        width: 100%;
        align-items: stretch;
    }
    
    .skeleton-button.full-width-mobile {
        width: 100%;
    }
}

/* =====================================================
   ACCESIBILIDAD
   ===================================================== */

/* Reducir animaciones para usuarios que lo prefieran */
@media (prefers-reduced-motion: reduce) {
    .skeleton {
        animation: none;
        background: var(--skeleton-bg);
    }
}

/* Screen readers */
.skeleton[aria-label]::after {
    content: attr(aria-label);
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}