/**
 * Natural Stone Catalog - Deferred Styles
 * Ultra-optimized, GPU-accelerated, zero-jank CSS
 * 
 * @package Avada
 * @version 1.0.0
 */

/* Modal Lightbox Styles */
.sc-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sc-modal.active {
    opacity: 1;
    visibility: visible;
}

.sc-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
}

.sc-modal-content {
    position: relative;
    max-width: 1200px;
    width: 100%;
    max-height: 90vh;
    background: var(--sc-bg, #fff);
    border-radius: 12px;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

.sc-modal.active .sc-modal-content {
    transform: scale(1);
}

.sc-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    font-size: 2rem;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    transition: background 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
}

.sc-modal-close:hover,
.sc-modal-close:focus {
    background: rgba(0, 0, 0, 0.8);
    transform: rotate(90deg);
    outline: none;
}

.sc-modal-body {
    display: grid;
    grid-template-columns: 1fr;
    max-height: 90vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

@media (min-width: 768px) {
    .sc-modal-body {
        grid-template-columns: 1fr 1fr;
    }
}

/* Modal Images */
.sc-modal-images {
    background: var(--sc-gray-100, #f8f9fa);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sc-modal-image-main {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 8px;
    overflow: hidden;
    background: var(--sc-gray-200, #e9ecef);
}

.sc-modal-image-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.sc-modal-image-main:hover img {
    transform: scale(1.1);
}

.sc-modal-thumbnails {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
}

.sc-modal-thumb {
    flex-shrink: 0;
    width: 80px;
    height: 60px;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s ease, transform 0.2s ease;
    border: 2px solid transparent;
}

.sc-modal-thumb:hover,
.sc-modal-thumb:focus {
    opacity: 1;
    transform: scale(1.05);
    outline: none;
}

.sc-modal-thumb.active {
    opacity: 1;
    border-color: var(--sc-primary, #000);
}

.sc-modal-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Modal Info */
.sc-modal-info {
    padding: 2rem;
    overflow-y: auto;
}

.sc-modal-title {
    font-size: 2rem;
    font-weight: 400;
    margin: 0 0 1rem;
    line-height: 1.2;
}

.sc-modal-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.sc-modal-meta-item {
    font-size: 0.875rem;
}

.sc-modal-meta-label {
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sc-gray-600, #6c757d);
    font-size: 0.75rem;
    margin-bottom: 0.25rem;
}

.sc-modal-meta-value {
    font-weight: 500;
    color: var(--sc-gray-800, #343a40);
}

.sc-modal-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--sc-gray-800, #343a40);
    margin-bottom: 1.5rem;
}

.sc-modal-uses {
    margin-bottom: 1.5rem;
}

.sc-modal-uses-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    color: var(--sc-gray-800, #343a40);
}

.sc-modal-uses-list {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--sc-gray-600, #6c757d);
}

/* Variation Tabs */
.sc-modal-variations {
    border-top: 1px solid var(--sc-gray-200, #e9ecef);
    padding-top: 1.5rem;
}

.sc-variations-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    color: var(--sc-gray-800, #343a40);
}

.sc-variation-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.sc-variation-tab {
    padding: 0.5rem 1rem;
    border: 1px solid var(--sc-gray-300, #dee2e6);
    background: transparent;
    border-radius: 2rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    color: var(--sc-gray-800, #343a40);
    -webkit-tap-highlight-color: transparent;
}

.sc-variation-tab:hover,
.sc-variation-tab:focus {
    background: var(--sc-gray-100, #f8f9fa);
    border-color: var(--sc-gray-600, #6c757d);
    outline: none;
}

.sc-variation-tab.active {
    background: var(--sc-primary, #000);
    color: var(--sc-bg, #fff);
    border-color: var(--sc-primary, #000);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* GPU Acceleration for smooth animations */
.sc-stone-card,
.sc-stone-image,
.sc-modal-content,
.sc-modal-image-main img {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* Focus visible for keyboard navigation */
.sc-filter-btn:focus-visible,
.sc-search-input:focus-visible,
.sc-modal-close:focus-visible,
.sc-variation-tab:focus-visible,
.sc-modal-thumb:focus-visible {
    outline: 2px solid var(--sc-primary, #000);
    outline-offset: 2px;
}

/* Hide scrollbar for thumbnails but keep functionality */
.sc-modal-thumbnails::-webkit-scrollbar {
    height: 4px;
}

.sc-modal-thumbnails::-webkit-scrollbar-track {
    background: var(--sc-gray-200, #e9ecef);
    border-radius: 2px;
}

.sc-modal-thumbnails::-webkit-scrollbar-thumb {
    background: var(--sc-gray-400, #ced4da);
    border-radius: 2px;
}

.sc-modal-thumbnails::-webkit-scrollbar-thumb:hover {
    background: var(--sc-gray-600, #6c757d);
}

/* Skeleton loading states */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.sc-skeleton {
    animation: shimmer 2s infinite linear;
    background: linear-gradient(
        to right,
        var(--sc-gray-200, #e9ecef) 4%,
        var(--sc-gray-100, #f8f9fa) 25%,
        var(--sc-gray-200, #e9ecef) 36%
    );
    background-size: 1000px 100%;
}

/* Responsive adjustments */
@media (max-width: 767px) {
    .sc-modal-info {
        padding: 1.5rem;
    }
    
    .sc-modal-title {
        font-size: 1.5rem;
    }
    
    .sc-modal-images {
        padding: 1.5rem;
    }
}

/* Print styles */
@media print {
    .sc-controls,
    .sc-modal {
        display: none !important;
    }
    
    .sc-stone-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .sc-filter-btn,
    .sc-variation-tab {
        border-width: 2px;
    }
}

/* Dark mode ready (optional, can be activated) */
@media (prefers-color-scheme: dark) {
    .stone-catalog-wrapper[data-theme="dark"] {
        --sc-primary: #fff;
        --sc-bg: #1a1a1a;
        --sc-gray-100: #2a2a2a;
        --sc-gray-200: #3a3a3a;
        --sc-gray-300: #4a4a4a;
        --sc-gray-600: #a0a0a0;
        --sc-gray-800: #e0e0e0;
    }
}