/* CSS Variables */
:root {
    --wcdb-primary: #ff6a00;
    --wcdb-primary-hover: #cc5500;
    --wcdb-bg: #ffffff;
    --wcdb-surface: #f8f9fa;
    --wcdb-card-bg: #ffffff;
    --wcdb-text: #111111;
    --wcdb-text-muted: #6c757d;
    --wcdb-border: #e5e7eb;
    --wcdb-border-light: #f0f0f0;
    --wcdb-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    --wcdb-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --wcdb-bg: #0a0a0a;
    --wcdb-surface: #1a1a1a;
    --wcdb-card-bg: #1f1f1f;
    --wcdb-text: #e5e5e5;
    --wcdb-text-muted: #9ca3af;
    --wcdb-border: #2a2a2a;
    --wcdb-border-light: #252525;
    --wcdb-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    --wcdb-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.wcdb-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--wcdb-bg);
    color: var(--wcdb-text);
}

.wcdb-header {
    margin-bottom: 24px;
}

.wcdb-header-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.wcdb-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

.wcdb-total-count {
    font-size: 13px;
    color: var(--wcdb-text-muted);
    background: var(--wcdb-surface);
    padding: 4px 12px;
    border-radius: 20px;
}

.wcdb-sticky-bar {
    position: sticky;
    top: 32px;
    z-index: 100;
    background: rgba(var(--wcdb-bg-rgb, 255, 255, 255), 0.85);
    backdrop-filter: blur(10px);
    padding: 16px 0;
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
    border-bottom: 1px solid var(--wcdb-border);
}

[data-theme="dark"] .wcdb-sticky-bar {
    background: rgba(10, 10, 10, 0.85);
}

.wcdb-container {
    --wcdb-bg-rgb: 255, 255, 255;
}
[data-theme="dark"] .wcdb-container {
    --wcdb-bg-rgb: 10, 10, 10;
}

.wcdb-search-wrapper {
    margin-bottom: 16px;
}

.wcdb-search-input {
    width: 100%;
    max-width: 360px;
    padding: 10px 16px;
    border: 1px solid var(--wcdb-border);
    border-radius: 10px;
    font-size: 14px;
    background: var(--wcdb-card-bg);
    color: var(--wcdb-text);
    transition: all 0.2s ease;
}

.wcdb-search-input:focus {
    outline: none;
    border-color: var(--wcdb-primary);
    box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.1);
}

.wcdb-categories-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.wcdb-category-pill {
    padding: 5px 12px;
    border: 1px solid var(--wcdb-border);
    border-radius: 20px;
    background: transparent;
    color: var(--wcdb-text-muted);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.wcdb-category-pill:hover {
    border-color: var(--wcdb-primary);
    color: var(--wcdb-primary);
}

.wcdb-category-pill.active {
    background: var(--wcdb-primary);
    border-color: var(--wcdb-primary);
    color: white;
}

.wcdb-category-count {
    font-size: 10px;
    margin-left: 3px;
    opacity: 0.7;
}

.wcdb-results-info {
    margin: 12px 0 8px;
    font-size: 12px;
    color: var(--wcdb-text-muted);
}

.wcdb-courses-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 16px 0;
}

.wcdb-course-row {
    display: grid;
    grid-template-columns: 56px 1fr 100px 120px auto;
    align-items: center;
    gap: 16px;
    padding: 10px 16px;
    background: var(--wcdb-card-bg);
    border: 1px solid var(--wcdb-border-light);
    border-radius: 10px;
    transition: all 0.2s ease;
}

.wcdb-course-row:hover {
    border-color: var(--wcdb-border);
    box-shadow: var(--wcdb-shadow-hover);
}

.wcdb-course-thumbnail {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    object-fit: cover;
    background: var(--wcdb-surface);
}

.wcdb-course-thumbnail-placeholder {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: var(--wcdb-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--wcdb-text-muted);
}

.wcdb-course-thumbnail-placeholder svg {
    width: 20px;
    height: 20px;
}

.wcdb-course-title {
    font-weight: 500;
    font-size: 14px;
    line-height: 1.4;
    color: var(--wcdb-text);
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.wcdb-course-title:hover {
    color: var(--wcdb-primary);
}

.wcdb-course-category {
    font-size: 11px;
    padding: 3px 8px;
    background: var(--wcdb-surface);
    border-radius: 12px;
    color: var(--wcdb-text-muted);
    display: inline-block;
    width: fit-content;
    white-space: nowrap;
}

.wcdb-regular-price {
    font-size: 11px;
    color: var(--wcdb-text-muted);
    text-decoration: line-through;
    margin-right: 5px;
}

.wcdb-sale-price,
.wcdb-price {
    font-size: 14px;
    font-weight: 700;
    color: var(--wcdb-primary);
}

.wcdb-buy-btn {
    padding: 6px 16px;
    background: var(--wcdb-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.wcdb-buy-btn:hover {
    background: var(--wcdb-primary-hover);
}

.wcdb-load-more-wrapper {
    text-align: center;
    margin: 32px 0;
}

.wcdb-load-more-btn {
    padding: 10px 28px;
    background: transparent;
    border: 2px solid var(--wcdb-primary);
    color: var(--wcdb-primary);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.wcdb-load-more-btn:hover:not(:disabled) {
    background: var(--wcdb-primary);
    color: white;
}

.wcdb-load-more-btn:disabled {
    cursor: not-allowed;
}

.wcdb-btn-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.wcdb-skeleton-row {
    display: grid;
    grid-template-columns: 56px 1fr 100px 120px auto;
    gap: 16px;
    padding: 10px 16px;
    background: var(--wcdb-card-bg);
    border: 1px solid var(--wcdb-border-light);
    border-radius: 10px;
}

.wcdb-skeleton-thumb {
    width: 48px;
    height: 48px;
    background: linear-gradient(90deg, var(--wcdb-border) 25%, var(--wcdb-border-light) 50%, var(--wcdb-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

.wcdb-skeleton-title {
    height: 14px;
    background: linear-gradient(90deg, var(--wcdb-border) 25%, var(--wcdb-border-light) 50%, var(--wcdb-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
    width: 70%;
}

.wcdb-skeleton-category {
    width: 70px;
    height: 24px;
    background: linear-gradient(90deg, var(--wcdb-border) 25%, var(--wcdb-border-light) 50%, var(--wcdb-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 12px;
}

.wcdb-skeleton-price {
    width: 60px;
    height: 18px;
    background: linear-gradient(90deg, var(--wcdb-border) 25%, var(--wcdb-border-light) 50%, var(--wcdb-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

.wcdb-skeleton-btn {
    width: 70px;
    height: 32px;
    background: linear-gradient(90deg, var(--wcdb-border) 25%, var(--wcdb-border-light) 50%, var(--wcdb-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@media (max-width: 768px) {
    .wcdb-container {
        padding: 12px;
    }
    
    .wcdb-sticky-bar {
        top: 0;
        margin: 0 -12px;
        padding-left: 12px;
        padding-right: 12px;
    }
    
    .wcdb-course-row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 12px;
    }
    
    .wcdb-course-thumbnail,
    .wcdb-course-thumbnail-placeholder {
        width: 56px;
        height: 56px;
    }
    
    .wcdb-buy-btn {
        width: 100%;
        text-align: center;
        padding: 8px;
    }
    
    .wcdb-skeleton-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .wcdb-header-top {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .wcdb-title {
        font-size: 20px;
    }
    
    .wcdb-search-input {
        max-width: 100%;
    }
}

.wcdb-no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--wcdb-text-muted);
    background: var(--wcdb-surface);
    border-radius: 12px;
}

.wcdb-error {
    padding: 20px;
    background: #fee2e2;
    border-left: 4px solid #dc2626;
    color: #991b1b;
    border-radius: 8px;
}

@media (prefers-reduced-motion: reduce) {
    .wcdb-course-row,
    .wcdb-buy-btn,
    .wcdb-category-pill,
    .wcdb-load-more-btn,
    .wcdb-sticky-bar {
        transition: none;
    }
    
    .wcdb-skeleton-thumb,
    .wcdb-skeleton-title,
    .wcdb-skeleton-category,
    .wcdb-skeleton-price,
    .wcdb-skeleton-btn {
        animation: none;
        background: var(--wcdb-border);
    }
    
    .wcdb-sticky-bar {
        backdrop-filter: none;
    }
}