/* Puchuang Wooden Sign Catalog - Dark Theme Styles */

/* CSS Variables for Dark Theme */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --bg-card: #1a1a1a;
    --border-color: #333333;
    --border-hover: #4A90E2;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    --accent-primary: #4A90E2;
    --accent-secondary: #28a745;
    --accent-warning: #ffc107;
    --accent-danger: #dc3545;
    
    --hover-bg: #3d3d3d;
    --active-bg: #4A90E2;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo i {
    font-size: 2rem;
    color: var(--accent-secondary);
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stats {
    display: flex;
    gap: 1.5rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.stat-item i {
    color: var(--accent-primary);
}

/* Navigation Styles */
.navigation {
    background: var(--bg-secondary);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 99;
}

.shape-filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    overflow-x: auto;
    padding: 0.25rem;
}

.filter-tab {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.filter-tab:hover {
    background: var(--hover-bg);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.filter-tab .count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.theme-filters {
    margin-top: 1rem;
}

.theme-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.theme-pill {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
    font-weight: 500;
}

.theme-pill:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.theme-pill.active {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    color: white;
}

/* Main Content */
.main-content {
    padding: 2rem 0;
    min-height: 60vh;
}

/* Search Section */
.search-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-bar {
    flex: 1;
    max-width: 400px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-bar i {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    z-index: 1;
}

.search-bar input {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem 0.75rem 3rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    font-size: 1rem;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.clear-btn {
    position: absolute;
    right: 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.clear-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.view-toggle {
    display: flex;
    gap: 0.25rem;
    background: var(--bg-card);
    padding: 0.25rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-btn:hover {
    color: var(--text-primary);
}

.view-btn.active {
    background: var(--accent-primary);
    color: white;
}

/* Results Info */
.results-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.results-info span {
    color: var(--text-secondary);
    font-weight: 500;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-options label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.sort-options select {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
}

/* Shapes Grid */
.shapes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.shape-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.shape-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.shape-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.shape-card:hover::before {
    transform: scaleX(1);
}

.shape-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.shape-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.shape-dimensions {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius-sm);
    display: inline-block;
}

.shape-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    opacity: 0.8;
}

.shape-categories {
    margin-bottom: 1rem;
}

.category-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.category-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.category-tag:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.shape-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-normal);
    font-size: 0.9rem;
}

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

.btn-primary:hover {
    background: #3a7bc8;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

/* Popular Categories Section */
.popular-categories {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.popular-categories h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.popular-categories h2 i {
    color: var(--accent-warning);
}

.category-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.category-showcase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.category-showcase-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.category-showcase-card h4 {
    margin-bottom: 0.5rem;
    color: var(--accent-primary);
}

.category-showcase-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(4px);
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.modal-content {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: 60vh;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-info p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-info i {
    color: var(--accent-danger);
}

.footer-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: all var(--transition-slow);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    text-align: center;
}

.spinner i {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.spinner p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        text-align: center;
        flex-direction: column;
    }
    
    .shape-filters {
        flex-wrap: wrap;
    }
    
    .search-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-bar {
        max-width: none;
    }
    
    .results-info {
        flex-direction: column;
        text-align: center;
    }
    
    .shapes-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-stats {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .shape-card {
        padding: 1rem;
    }
    
    .theme-pills {
        justify-content: center;
    }
    
    .category-showcase {
        grid-template-columns: 1fr;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

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

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

/* List View Styles */
.shapes-grid.list-view {
    grid-template-columns: 1fr;
    gap: 1rem;
}

.shapes-grid.list-view .shape-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 1.5rem;
}

.shapes-grid.list-view .shape-header {
    margin-bottom: 0;
    flex: 1;
    margin-right: 1rem;
}

.shapes-grid.list-view .shape-categories {
    margin-bottom: 0;
    flex: 2;
}

.shapes-grid.list-view .shape-actions {
    margin-top: 0;
    flex-shrink: 0;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}