/* Стили для страницы каталога - Modern High-Tech */

/* Catalog Header */
.catalog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding-left: var(--spacing-2xl);
    padding-right: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.catalog-title h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 var(--spacing-sm) 0;
}

.catalog-title p {
    font-size: var(--font-size-lg);
    color: var(--gray-400);
    margin: 0;
}

.catalog-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* Filters Panel - Glassmorphism */
.filters-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    display: none;
    box-shadow: var(--shadow-xl);
    animation: slideDown 0.4s ease-out;
}

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

.filters-panel.active {
    display: block;
}

.filters-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-300);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-group select,
.filter-group input {
    padding: var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    color: var(--white);
    transition: all var(--transition-base);
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow), var(--shadow-glow);
    background: rgba(255, 255, 255, 0.1);
}

.filter-group input::placeholder {
    color: var(--gray-500);
}

.filter-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: end;
}

/* Catalog Grid */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.catalog-grid.list-view {
    grid-template-columns: 1fr;
}

.catalog-grid.list-view .catalog-item {
    display: flex;
    gap: var(--spacing-lg);
}

.catalog-grid.list-view .catalog-item-image {
    width: 200px;
    flex-shrink: 0;
}

.catalog-grid.list-view .catalog-item-content {
    flex: 1;
}

/* Catalog Item - Advanced 3D Cards */
.catalog-item {
    background: var(--glass-bg-light);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-slow);
    position: relative;
    transform-style: preserve-3d;
}

.catalog-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-slow);
    z-index: 0;
}

.catalog-item:hover {
    transform: translateY(-12px) rotateX(3deg);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.catalog-item:hover::before {
    opacity: 0.08;
}

.catalog-item-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: var(--gradient-secondary);
}

.catalog-item-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.6) 100%);
    z-index: 1;
}

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

.catalog-item:hover .catalog-item-image img {
    transform: scale(1.15) rotate(2deg);
}

.catalog-item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9), rgba(139, 92, 246, 0.9));
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-slow);
    z-index: 2;
}

.catalog-item:hover .catalog-item-overlay {
    opacity: 1;
}

.catalog-item-overlay .btn {
    min-width: 140px;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.catalog-item:hover .catalog-item-overlay .btn {
    transform: translateY(0);
}

.catalog-item-overlay .btn:nth-child(1) {
    transition-delay: 0.1s;
}

.catalog-item-overlay .btn:nth-child(2) {
    transition-delay: 0.2s;
}

.catalog-item-content {
    padding: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.catalog-item-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 var(--spacing-sm) 0;
}

.catalog-item-content p {
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.6;
}

.catalog-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.catalog-item-meta .category {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-glow);
}

.catalog-item-meta .size {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    font-weight: 600;
    background: var(--glass-bg);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

/* Load More */
.load-more {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

/* PDF Modal - Modern Glassmorphism */
.pdf-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.pdf-modal.active {
    display: flex;
}

.pdf-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    cursor: pointer;
}

.pdf-modal-content {
    position: relative;
    background: var(--glass-bg-light);
    backdrop-filter: blur(30px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
    width: 100%;
    max-width: 1200px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalSlideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.pdf-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
}

.pdf-modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.pdf-modal-actions {
    display: flex;
    gap: var(--spacing-md);
}

.pdf-modal-body {
    flex: 1;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
}

#pdfViewer {
    width: 100%;
    height: 100%;
    min-height: 500px;
    border: none;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .catalog-header {
        flex-direction: column;
        gap: var(--spacing-lg);
        align-items: stretch;
    }
    
    .catalog-actions {
        justify-content: center;
    }
    
    .filters-content {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .catalog-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .catalog-grid {
        grid-template-columns: 1fr;
    }
    
    .catalog-grid.list-view .catalog-item {
        flex-direction: column;
    }
    
    .catalog-grid.list-view .catalog-item-image {
        width: 100%;
    }
    
    .filters-content {
        grid-template-columns: 1fr;
    }
    
    .filter-actions {
        justify-content: center;
    }
    
    .pdf-modal {
        padding: var(--spacing-sm);
    }
    
    .pdf-modal-content {
        max-height: 95vh;
    }
    
    .pdf-modal-header {
        padding: var(--spacing-md);
    }
    
    .pdf-modal-actions {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .catalog-title h1 {
        font-size: var(--font-size-2xl);
    }
    
    .catalog-title p {
        font-size: var(--font-size-base);
    }
    
    .catalog-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .catalog-item-content {
        padding: var(--spacing-md);
    }
    
    .catalog-item-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
        align-items: flex-start;
    }
}