/* Udemy-style Course Cards CSS */
/* Using existing CSS variables from style.css for theme compatibility */

/* Course Card Container */
.udemy-course-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    height: 100%;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
    font-family: 'Cairo', sans-serif;
}

.udemy-course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: var(--blue-color);
}

/* Dark theme adjustments */
[data-theme="dark"] .udemy-course-card {
    background: var(--dark-bg-color);
    border-color: var(--dark-border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] .udemy-course-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
    border-color: var(--dark-blue-color);
}

/* Course Image Container */
.course-image-container {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    border-radius: 12px 12px 0 0;
}

.course-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.course-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.udemy-course-card:hover .course-image {
    transform: scale(1.02);
}

/* Course Badge */
.course-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
    font-family: 'Cairo', sans-serif;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.course-badge-free {
    background: rgba(20, 184, 166, 0.9);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.course-badge-premium {
    background: rgba(250, 204, 21, 0.9);
    color: var(--text-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Course Overlay (Hover Effect) */
.course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(14, 165, 233, 0.95), 
        rgba(98, 60, 234, 0.95)
    );
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1;
}

.udemy-course-card:hover .course-overlay {
    opacity: 0;
    visibility: hidden;
}

.course-preview-content {
    text-align: center;
    color: white;
    max-width: 100%;
    font-family: 'Cairo', sans-serif;
}

.course-preview-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
    font-family: 'Cairo', sans-serif;
}


.course-preview-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    opacity: 0.9;
    font-family: 'Cairo', sans-serif;
}

.feature-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.course-preview-actions {
    display: flex;
    justify-content: center;
}

.preview-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 2px solid white;
    background: transparent;
    color: white;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
    font-family: 'Cairo', sans-serif;
}

.preview-btn:hover {
    background: white;
    color: var(--blue-color);
}

/* Course Content */
.course-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-family: 'Cairo', sans-serif;
}

/* Course Title */
.course-title {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-color);
    font-family: 'Cairo', sans-serif;
    margin-bottom: 8px;
}

.course-title-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.course-title-link:hover {
    color: var(--blue-color);
}

/* Course Instructor */
.course-instructor {
    margin: 0;
    font-size: 14px;
    color: var(--second-color);
    font-weight: 500;
    font-family: 'Cairo', sans-serif;
    margin-bottom: 12px;
}

/* Course Rating */
.course-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.rating-stars {
    display: flex;
    align-items: center;
    gap: 4px;
}

.rating-score {
    font-size: 14px;
    font-weight: 700;
    color: var(--yellow-color);
}

.stars {
    display: flex;
    gap: 1px;
}

.star {
    width: 14px;
    height: 14px;
    color: var(--yellow-color);
}

.star-filled {
    width: 14px;
    height: 14px;
    color: var(--yellow-color);
}

.star-empty {
    width: 14px;
    height: 14px;
    color: var(--border-color);
    stroke-width: 1.5;
}

[data-theme="dark"] .star-filled {
    color: var(--dark-yellow-color);
}

[data-theme="dark"] .star-empty {
    color: var(--dark-border-color);
}

.rating-count {
    font-size: 12px;
    color: var(--second-color);
    font-family: 'Cairo', sans-serif;
}

/* Course Meta */
.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 8px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--second-color);
    font-family: 'Cairo', sans-serif;
}

.meta-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Course Footer */
.course-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    gap: 12px;
}

/* Course Price */
.course-price {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.price-current {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-color);
    font-family: 'Cairo', sans-serif;
}

.price-original {
    font-size: 14px;
    color: var(--second-color);
    text-decoration: line-through;
    font-family: 'Cairo', sans-serif;
}

.price-free {
    font-size: 18px;
    font-weight: 700;
    color: var(--green-color);
    font-family: 'Cairo', sans-serif;
}

/* Course Action Button */
.course-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    background: var(--blue-color);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: 'Cairo', sans-serif;
    min-width: 120px;
}

.course-action-btn:hover {
    background: var(--blue-dark-color, var(--blue-color));
    transform: translateY(-1px);
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

/* Enrolled Course Button - Green */
.course-action-enrolled {
    background: var(--green-color) !important;
    color: white !important;
    box-shadow: 0 2px 8px rgba(20, 184, 166, 0.2);
}

.course-action-enrolled:hover {
    background: var(--green-dark-color, var(--green-color)) !important;
    opacity: 1;
    color: white !important;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
    transform: translateY(-1px);
}

/* Free Course Button - Green Outline */
.course-action-free {
    background: transparent !important;
    color: var(--green-color) !important;
    border: 2px solid var(--green-color) !important;
    box-shadow: 0 2px 8px rgba(20, 184, 166, 0.1);
}

.course-action-free:hover {
    background: var(--green-color) !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
    transform: translateY(-1px);
}

/* SVG Icons in buttons */
.course-action-btn svg {
    margin-left: 4px;
    margin-right: 0;
}

[dir="rtl"] .course-action-btn svg {
    margin-left: 0;
    margin-right: 4px;
}

/* Responsive Design */

/* Tablet */
@media (max-width: 1024px) {
    .course-image-container {
        height: 200px;
    }
    
    .course-content {
        padding: 20px;
    }
    
    .course-title {
        font-size: 15px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .udemy-course-card {
        margin-bottom: 20px;
    }
    
    .course-image-container {
        height: 180px;
    }
    
    .course-content {
        padding: 14px;
        gap: 10px;
    }
    
    .course-title {
        font-size: 14px;
    }
    
    .course-preview-content {
        padding: 16px;
    }
    
    .course-preview-title {
        font-size: 16px;
    }
    
    .course-footer {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .course-action-btn {
        width: 100%;
        padding: 10px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .course-image-container {
        height: 140px;
    }
    
    .course-content {
        padding: 12px;
    }
    
    .course-title {
        font-size: 13px;
    }
    
    .course-meta {
        gap: 8px;
    }
    
    .meta-item {
        font-size: 11px;
    }
}

/* Grid Layout Enhancements */
@media (min-width: 1280px) {
    .grid.grid-cols-1.md\:grid-cols-2.lg\:grid-cols-3.xl\:grid-cols-4 {
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .grid.grid-cols-1.md\:grid-cols-2.lg\:grid-cols-3.xl\:grid-cols-4 {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* Animation Improvements */
@media (prefers-reduced-motion: reduce) {
    .udemy-course-card,
    .course-image,
    .course-overlay,
    .course-action-btn {
        transition: none;
    }
    
    .udemy-course-card:hover {
        transform: none;
    }
    
    .udemy-course-card:hover .course-image {
        transform: none;
    }
    
    .udemy-course-card:hover .course-overlay {
        opacity: 0;
        visibility: hidden;
    }
}

/* Focus States for Accessibility */
.udemy-course-card:focus-within {
    outline: 2px solid var(--blue-color);
    outline-offset: 2px;
}

.course-title-link:focus,
.course-action-btn:focus,
.preview-btn:focus {
    outline: 2px solid var(--blue-color);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Wishlist/Favorite Button States */
.preview-btn.wishlisted {
    background: white;
    color: var(--red-color);
    border-color: var(--red-color);
}

.preview-btn.wishlisted:hover {
    background: var(--red-color);
    color: white;
}

/* Loading States */
.course-action-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

/* Additional Animation Classes */
.course-card-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.8; }
    100% { opacity: 1; }
}

.course-card-shimmer {
    background: linear-gradient(90deg, 
        var(--second-bg-color) 25%, 
        var(--third-bg-color, var(--border-color)) 50%, 
        var(--second-bg-color) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* Enhanced Focus States */
.udemy-course-card:focus-within .course-overlay {
    opacity: 0;
    visibility: hidden;
}

/* Modern Card Enhancements */
.udemy-course-card {
    backdrop-filter: blur(10px);
}

.udemy-course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--blue-color), var(--blue-dark-color));
    border-radius: 16px 16px 0 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.udemy-course-card:hover::before {
    opacity: 1;
}

[data-theme="dark"] .udemy-course-card::before {
    background: linear-gradient(90deg, var(--dark-blue-color), var(--dark-blue-dark-color));
}

/* Improved Dark Theme Support */
[data-theme="dark"] .course-badge-free {
    background: rgba(20, 184, 166, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .course-badge-premium {
    background: rgba(250, 204, 21, 0.9);
    color: var(--dark-text-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .course-action-btn {
    background: var(--dark-blue-color);
}

[data-theme="dark"] .course-action-btn:hover {
    background: var(--dark-blue-dark-color, var(--dark-blue-color));
}

[data-theme="dark"] .course-footer {
    border-color: var(--dark-border-color);
}

[data-theme="dark"] .course-title {
    color: var(--dark-text-color);
}

[data-theme="dark"] .course-instructor {
    color: var(--dark-second-color);
}

[data-theme="dark"] .price-current {
    color: var(--dark-text-color);
}

[data-theme="dark"] .rating-count {
    color: var(--dark-second-color);
}

[data-theme="dark"] .meta-item {
    color: var(--dark-second-color);
}

[data-theme="dark"] .course-action-btn {
    background: var(--dark-blue-color);
}

[data-theme="dark"] .course-action-btn:hover {
    background: var(--dark-blue-dark-color, var(--dark-blue-color));
}

[data-theme="dark"] .course-action-enrolled {
    background: var(--dark-green-color) !important;
}

[data-theme="dark"] .course-action-free {
    color: var(--dark-green-color) !important;
    border-color: var(--dark-green-color) !important;
}

[data-theme="dark"] .course-action-free:hover {
    background: var(--dark-green-color) !important;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .udemy-course-card {
        border-width: 2px;
    }
    
    .course-badge {
        border: 1px solid currentColor;
    }
    
    .course-action-btn {
        border: 1px solid currentColor;
    }
}