/**
 * Estilos CSS para el frontend del plugin PDF Manager
 *
 * @package PDF_Manager
 * @since 1.0.0
 */

/* Variables CSS */
:root {
    --pdf-primary: #aa2429;
    --pdf-primary-hover: #005a87;
    --pdf-secondary-manager-manager: #f8f9fa;
    --pdf-border: #e0e0e0;
    --pdf-shadow: 0 2px 8px rgba(0,0,0,0.1);
    --pdf-radius: 6px;
    --pdf-transition: all 0.3s ease;
    --pdf-text: #333;
    --pdf-text-light: #666;
    --pdf-text-lighter: #999;
}

/* Contenedor principal de PDFs del producto */
.pdf-manager-product-pdfs {
    margin: 20px 0;
}

.pdf-manager-product-pdfs h3 {
    margin-bottom: 20px;
    color: var(--pdf-text);
    font-size: 1.2em;
}

/* Item individual de PDF */
.pdf-item {
    display: flex;
    align-items: flex-start;
    background: #fff;
    border: 1px solid var(--pdf-border);    
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: var(--pdf-shadow);
    transition: var(--pdf-transition);
    position: relative;
    overflow: hidden;
}

.pdf-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    border-color: var(--pdf-primary);
}

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

/* Icono del PDF */
.pdf-icon {
    width: 60px;
    height: 60px;
    border:1px solid #ffffff;    
    border-radius: var(--pdf-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.pdf-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: var(--pdf-transition);
    opacity: 0;
}

.pdf-item:hover .pdf-icon::before {
    opacity: 1;
    animation: pdf-shine 0.6s ease-out;
}

@keyframes pdf-shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.pdf-icon-file {
    color: white;
    font-size: 24px;
    font-weight: bold;
}

.pdf-icon-file::before {
    content: 'PDF';
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
}

/* Detalles del PDF */
.pdf-details {
    flex: 1;
    min-width: 0;
}

.pdf-title {
    margin: 0 0 8px 0;
    font-size: 1.1em;
    font-weight: 600;
    color: var(--pdf-text);
    line-height: 1.3;
}

.pdf-description {
    margin: 0 0 12px 0;
    color: var(--pdf-text-light);
    line-height: 1.5;
    font-size: 0.95em;
}

.pdf-meta {
    display: flex;
    gap: 15px;
    font-size: 0.85em;
    color: var(--pdf-text-lighter);
    margin-bottom: 15px;
}

.pdf-size,
.pdf-type {
    border:1px solid #e9ecef;
    color: #fff;
    padding: 4px 8px;
    border-radius: 5px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Acciones del PDF */
.pdf-actions {
    display: flex;
    gap: 10px;
    margin-left: 20px;
    flex-shrink: 0;
}

.pdf-download-btn,
.pdf-view-btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--pdf-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9em;
    cursor: pointer;
    transition: var(--pdf-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.pdf-download-btn::before,
.pdf-view-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.pdf-download-btn:hover::before,
.pdf-view-btn:hover::before {
    width: 300px;
    height: 300px;
}

.pdf-download-btn {
    background: var(--pdf-primary);
    color: white;
}

.pdf-download-btn:hover {
    background: var(--pdf-primary-hover);
    color: white;
    transform: translateY(-1px);
}

.pdf-view-btn {
    background: transparent;
    color: var(--pdf-primary);
    border: 2px solid var(--pdf-primary);
}

.pdf-view-btn:hover {
    background: var(--pdf-primary);
    color: white;
    transform: translateY(-1px);
}

/* Iconos en botones */
.pdf-download-btn::after {
    content: '⬇';
    font-size: 0.8em;
}

.pdf-view-btn::after {
    content: '👁';
    font-size: 0.8em;
}

/* Shortcode de PDFs */
.pdf-manager-shortcode-pdfs {
    margin: 20px 0;
}

.pdf-shortcode-item {
    background: #fff;
    border: 1px solid var(--pdf-border);
    border-radius: var(--pdf-radius);
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: var(--pdf-shadow);
    transition: var(--pdf-transition);
}

.pdf-shortcode-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.pdf-shortcode-title {
    margin: 0 0 8px 0;
    font-size: 1em;
    font-weight: 600;
    color: var(--pdf-text);
}

.pdf-shortcode-description {
    margin: 0 0 12px 0;
    color: var(--pdf-text-light);
    font-size: 0.9em;
    line-height: 1.4;
}

.pdf-shortcode-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.pdf-shortcode-download,
.pdf-shortcode-view {
    padding: 8px 16px;
    border-radius: var(--pdf-radius);
    text-decoration: none;
    font-size: 0.85em;
    font-weight: 500;
    transition: var(--pdf-transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.pdf-shortcode-download {
    background: var(--pdf-primary);
    color: white;
}

.pdf-shortcode-download:hover {
    background: var(--pdf-primary-hover);
    color: white;
}

.pdf-shortcode-view {
    background: var(--pdf-secondary-manager);
    color: var(--pdf-text);
    border: 1px solid var(--pdf-border);
}

.pdf-shortcode-view:hover {
    background: #e9ecef;
    color: var(--pdf-text);
}

/* Estados de carga */
.pdf-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--pdf-border);
    border-top: 2px solid var(--pdf-primary);
    border-radius: 50%;
    animation: pdf-spin 1s linear infinite;
    margin-right: 8px;
}

@keyframes pdf-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mensajes de estado */
.pdf-message {
    padding: 12px 16px;
    border-radius: var(--pdf-radius);
    margin: 15px 0;
    font-size: 0.9em;
}

.pdf-message-info {
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

.pdf-message-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

/* Responsive Design */
@media (max-width: 768px) {
    .pdf-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .pdf-icon {
        width: 50px;
        height: 50px;
        margin-right: 0;
        margin-bottom: 15px;
        align-self: flex-start;
    }
    
    .pdf-actions {
        margin-left: 0;
        margin-top: 15px;
        justify-content: flex-start;
    }
    
    .pdf-download-btn,
    .pdf-view-btn {
        flex: 1;
        justify-content: center;
        min-width: 0;
    }
    
    .pdf-meta {
        flex-wrap: wrap;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .pdf-item {
        padding: 15px;
    }
    
    .pdf-actions {
        flex-direction: column;
        gap: 8px;
    }
    
    .pdf-download-btn,
    .pdf-view-btn {
        width: 100%;
        text-align: center;
    }
    
    .pdf-shortcode-actions {
        flex-direction: column;
    }
    
    .pdf-shortcode-download,
    .pdf-shortcode-view {
        text-align: center;
        justify-content: center;
    }
}

/* Animaciones de entrada */
.pdf-item {
    animation: pdf-fadeInUp 0.5s ease-out;
}

@keyframes pdf-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Efectos de hover mejorados */
.pdf-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,115,170,0.05), transparent);
    transition: left 0.5s ease;
}

.pdf-item:hover::before {
    left: 100%;
}

/* Accesibilidad */
.pdf-download-btn:focus,
.pdf-view-btn:focus,
.pdf-shortcode-download:focus,
.pdf-shortcode-view:focus {
    outline: 2px solid var(--pdf-primary);
    outline-offset: 2px;
}

/* Estados de descarga */
.pdf-downloading {
    opacity: 0.7;
    pointer-events: none;
}

.pdf-downloading .pdf-download-btn::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: pdf-spin 1s linear infinite;
}

/* Integración con temas de WooCommerce */
.woocommerce-tabs .pdf-manager-product-pdfs {
    margin: 0;
}

.woocommerce-Tabs-panel--pdfs {
    padding: 2em 0;
}

/* Mejoras visuales adicionales */
.pdf-item {
    background: linear-gradient(135deg, #fff 0%, #fafafa 100%);
}

.pdf-title {
    background: linear-gradient(135deg, var(--pdf-text) 0%, var(--pdf-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --pdf-text: #e0e0e0;
        --pdf-text-light: #b0b0b0;
        --pdf-text-lighter: #888;
        --pdf-secondary-manager: #2a2a2a;
        --pdf-border: #404040;
    }
    
    .pdf-item {
        background: linear-gradient(135deg, #aa2429 0%, #960002 100%);
        border-color: var(--pdf-border);
    }
    
    .pdf-shortcode-item {
        background: #1a1a1a;
        border-color: var(--pdf-border);
    }
    
    .pdf-title {
        background: linear-gradient(135deg, var(--pdf-text) 0%, #4a9eff 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}