/**
 * CSS del Frontend - DABO PDF Library
 * @author DABO Comunicación
 */

/* Contenedor principal de la galería */
.dabo-pdf-gallery {
    margin: 30px 0;
    clear: both;
}

/* Grid de PDFs */
.dabo-pdf-gallery-grid {
    display: grid;
    gap: 20px;
    margin: 0;
    padding: 0;
}

/* Columnas responsivas */
.dabo-pdf-gallery-grid[data-columns="1"] {
    grid-template-columns: repeat(1, 1fr);
}

.dabo-pdf-gallery-grid[data-columns="2"] {
    grid-template-columns: repeat(2, 1fr);
}

.dabo-pdf-gallery-grid[data-columns="3"] {
    grid-template-columns: repeat(3, 1fr);
}

.dabo-pdf-gallery-grid[data-columns="4"] {
    grid-template-columns: repeat(4, 1fr);
}

.dabo-pdf-gallery-grid[data-columns="5"] {
    grid-template-columns: repeat(5, 1fr);
}

.dabo-pdf-gallery-grid[data-columns="6"] {
    grid-template-columns: repeat(6, 1fr);
}

/* Item individual de PDF - Solo portada */
.dabo-pdf-item {
    position: relative;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    cursor: pointer;
}

.dabo-pdf-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: #ccc;
}

/* Portada del PDF */
.dabo-pdf-cover {
    position: relative;
    width: 100%;
    padding-top: 141.42%; /* Proporción A4 (1:1.4142) */
    background: #f5f5f5;
    overflow: hidden;
}

.dabo-pdf-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.dabo-pdf-item:hover .dabo-pdf-cover img {
    transform: scale(1.05);
}

/* Vista previa no disponible */
.dabo-pdf-no-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
}

.dabo-pdf-no-preview .dashicons {
    font-size: 80px;
    width: 80px;
    height: 80px;
    color: #999;
}

/* Mensajes de error/vacío */
.dabo-pdf-gallery-error,
.dabo-pdf-gallery-empty {
    padding: 30px;
    text-align: center;
    background: #f9f9f9;
    border: 2px dashed #ddd;
    border-radius: 8px;
}

.dabo-pdf-gallery-error p,
.dabo-pdf-gallery-empty p {
    margin: 0;
    font-size: 16px;
    color: #666;
}

.dabo-pdf-gallery-error {
    background: #fff3cd;
    border-color: #ffecb5;
}

.dabo-pdf-gallery-error p {
    color: #856404;
}

/* ============================================
   LIGHTBOX STYLES
   ============================================ */

.dabo-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
}

.dabo-lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    animation: dabo-fade-in 0.3s ease;
}

.dabo-lightbox-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px 20px;
}

.dabo-lightbox-image-container {
    max-width: 90%;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: dabo-zoom-in 0.3s ease;
}

.dabo-lightbox-image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.dabo-lightbox-title {
    margin-top: 20px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 4px;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    max-width: 100%;
    word-wrap: break-word;
}

/* Botones del lightbox */
.dabo-lightbox-close,
.dabo-lightbox-prev,
.dabo-lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: #333;
    font-size: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000000;
    line-height: 1;
    padding: 0;
}

.dabo-lightbox-close:hover,
.dabo-lightbox-prev:hover,
.dabo-lightbox-next:hover {
    background: #fff;
    transform: scale(1.1);
}

.dabo-lightbox-close {
    top: 20px;
    right: 20px;
    font-weight: 300;
}

.dabo-lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 300;
}

.dabo-lightbox-prev:hover {
    transform: translateY(-50%) scale(1.1);
}

.dabo-lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 300;
}

.dabo-lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

/* Animaciones */
@keyframes dabo-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes dabo-zoom-in {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animación de entrada de items */
@keyframes dabo-item-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dabo-pdf-item {
    animation: dabo-item-fade-in 0.5s ease-out;
}

/* Delay progresivo para items */
.dabo-pdf-item:nth-child(1) { animation-delay: 0.05s; }
.dabo-pdf-item:nth-child(2) { animation-delay: 0.1s; }
.dabo-pdf-item:nth-child(3) { animation-delay: 0.15s; }
.dabo-pdf-item:nth-child(4) { animation-delay: 0.2s; }
.dabo-pdf-item:nth-child(5) { animation-delay: 0.25s; }
.dabo-pdf-item:nth-child(6) { animation-delay: 0.3s; }
.dabo-pdf-item:nth-child(7) { animation-delay: 0.35s; }
.dabo-pdf-item:nth-child(8) { animation-delay: 0.4s; }
.dabo-pdf-item:nth-child(9) { animation-delay: 0.45s; }
.dabo-pdf-item:nth-child(10) { animation-delay: 0.5s; }

/* ============================================
   RESPONSIVE MEJORADO
   ============================================ */

/* Tablets grandes y escritorio pequeño (992px - 1200px) */
@media screen and (max-width: 1200px) {
    .dabo-pdf-gallery-grid[data-columns="6"] {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .dabo-pdf-gallery-grid[data-columns="5"] {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tablets (768px - 992px) */
@media screen and (max-width: 992px) {
    .dabo-pdf-gallery-grid[data-columns="6"],
    .dabo-pdf-gallery-grid[data-columns="5"],
    .dabo-pdf-gallery-grid[data-columns="4"] {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablets pequeñas (576px - 768px) */
@media screen and (max-width: 768px) {
    .dabo-pdf-gallery-grid {
        gap: 15px;
    }
    
    .dabo-pdf-gallery-grid[data-columns="6"],
    .dabo-pdf-gallery-grid[data-columns="5"],
    .dabo-pdf-gallery-grid[data-columns="4"],
    .dabo-pdf-gallery-grid[data-columns="3"] {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Botones del lightbox más pequeños en tablet */
    .dabo-lightbox-close,
    .dabo-lightbox-prev,
    .dabo-lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 32px;
    }
}

/* Móviles (hasta 576px) - MANTENER 2 COLUMNAS */
@media screen and (max-width: 576px) {
    .dabo-pdf-gallery-grid {
        gap: 12px;
    }
    
    /* TODAS las configuraciones usan 2 columnas en móvil */
    .dabo-pdf-gallery-grid[data-columns="1"],
    .dabo-pdf-gallery-grid[data-columns="2"],
    .dabo-pdf-gallery-grid[data-columns="3"],
    .dabo-pdf-gallery-grid[data-columns="4"],
    .dabo-pdf-gallery-grid[data-columns="5"],
    .dabo-pdf-gallery-grid[data-columns="6"] {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Botones del lightbox adaptados para móvil */
    .dabo-lightbox-close,
    .dabo-lightbox-prev,
    .dabo-lightbox-next {
        width: 35px;
        height: 35px;
        font-size: 28px;
    }
    
    .dabo-lightbox-close {
        top: 10px;
        right: 10px;
    }
    
    .dabo-lightbox-prev {
        left: 10px;
    }
    
    .dabo-lightbox-next {
        right: 10px;
    }
    
    .dabo-lightbox-content {
        padding: 50px 10px 10px;
    }
    
    .dabo-lightbox-title {
        font-size: 14px;
        padding: 8px 15px;
        margin-top: 15px;
    }
}

/* Móviles muy pequeños (hasta 380px) - MANTENER 2 COLUMNAS */
@media screen and (max-width: 380px) {
    .dabo-pdf-gallery-grid {
        gap: 10px;
    }
    
    /* Asegurar 2 columnas incluso en pantallas muy pequeñas */
    .dabo-pdf-gallery-grid[data-columns="1"],
    .dabo-pdf-gallery-grid[data-columns="2"],
    .dabo-pdf-gallery-grid[data-columns="3"],
    .dabo-pdf-gallery-grid[data-columns="4"],
    .dabo-pdf-gallery-grid[data-columns="5"],
    .dabo-pdf-gallery-grid[data-columns="6"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

/* Accesibilidad */
.dabo-pdf-item:focus {
    outline: 2px solid #0073aa;
    outline-offset: 2px;
}

.dabo-lightbox-close:focus,
.dabo-lightbox-prev:focus,
.dabo-lightbox-next:focus {
    outline: 2px solid #0073aa;
}

/* Print styles */
@media print {
    .dabo-pdf-gallery-grid {
        display: block;
    }
    
    .dabo-pdf-item {
        page-break-inside: avoid;
        margin-bottom: 20px;
    }
    
    .dabo-pdf-item:hover {
        transform: none;
        box-shadow: none;
    }
    
    .dabo-lightbox {
        display: none !important;
    }
}