/* ===================================
   PREMIUM COURSE CARDS STYLING
   Modern design inspired by Udemy, Coursera, MasterClass
   Brand Color: #9144ff
   =================================== */

/* Override default course card styles from main CSS */
.course-card .card {
    border: none !important;
    border-radius: 20px !important;
    box-shadow: none !important;
    background: transparent !important;
}

.course-card .card:hover {
    box-shadow: none !important;
}

.course-card .card .card-img-top {
    border-radius: 20px 20px 0 0 !important;
}

/* Course Card Container */
.course-card {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    margin-bottom: 24px;
}

.course-card[style*="display: none"] {
    opacity: 0;
    transform: scale(0.95);
}

/* Premium Course Card - Higher specificity to override default styles */
.course-card .premium-course-card {
    background: rgba(255, 255, 255, 0.95) !important;
    border-radius: 20px !important;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    border: 1px solid rgba(145, 68, 255, 0.08) !important;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.06),
        0 1px 3px rgba(0, 0, 0, 0.1) !important;
    backdrop-filter: blur(10px);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

.course-card .premium-course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
        rgba(145, 68, 255, 0.02) 0%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(145, 68, 255, 0.02) 100%);
    pointer-events: none;
    z-index: 1;
}

.course-card .premium-course-card:hover {
    transform: translateY(-12px) scale(1.02) !important;
    box-shadow:
        0 20px 60px rgba(145, 68, 255, 0.15),
        0 8px 25px rgba(0, 0, 0, 0.1) !important;
    border-color: rgba(145, 68, 255, 0.2) !important;
}

/* Course Card Link */
.course-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 2;
}

.course-card-link:hover {
    text-decoration: none;
    color: inherit;
}

/* Image Section */
.course-image-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.course-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.premium-course-card:hover .course-image {
    transform: scale(1.08);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg, 
        rgba(0, 0, 0, 0) 0%, 
        rgba(0, 0, 0, 0.1) 70%, 
        rgba(0, 0, 0, 0.3) 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.premium-course-card:hover .image-overlay {
    opacity: 1;
}

/* Badges */
.course-type-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    backdrop-filter: blur(15px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 10;
    transition: all 0.3s ease;
}

.live-badge {
    background: linear-gradient(135deg, #9144ff 0%, #7c3aed 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(145, 68, 255, 0.4);
}

.recorded-badge {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

.course-feature-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.95);
    color: #9144ff;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(145, 68, 255, 0.2);
    z-index: 10;
}

.course-category-tag {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.9);
    color: #374151;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

/* Content Section */
.course-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.course-title {
    font-size: 18px;
    font-weight: 700;
    color: #1f2937;
    line-height: 1.3;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 48px;
    transition: color 0.3s ease;
}

.premium-course-card:hover .course-title {
    color: #9144ff;
}

.instructor-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #6b7280;
    font-size: 13px;
    font-weight: 500;
}

.instructor-info i {
    color: #9144ff;
    font-size: 12px;
}

/* Rating Section */
.course-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0;
}

.rating-stars {
    display: flex;
    gap: 2px;
}

.rating-stars i {
    font-size: 14px;
    color: #fbbf24;
}

.rating-number {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
}

.rating-count {
    font-size: 12px;
    color: #6b7280;
}

/* Course Meta */
.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 8px 0;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #6b7280;
    font-weight: 500;
}

.meta-item i {
    color: #9144ff;
    font-size: 11px;
}

/* Enrollment Info */
.enrollment-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(34, 197, 94, 0.05) 100%);
    border-radius: 12px;
    border-left: 3px solid #22c55e;
    font-size: 13px;
    font-weight: 600;
    color: #16a34a;
    margin: 8px 0;
}

.enrollment-info i {
    font-size: 12px;
}

/* Price Section */
.course-price {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid rgba(145, 68, 255, 0.1);
}

.price-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.current-price {
    font-size: 20px;
    font-weight: 700;
    color: #9144ff;
}

.original-price {
    font-size: 16px;
    color: #9ca3af;
    text-decoration: line-through;
    font-weight: 500;
}

.discount-badge {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    padding: 4px 8px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .course-image-wrapper {
        height: 200px;
    }
    
    .course-content {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .premium-course-card {
        border-radius: 16px;
    }
    
    .course-image-wrapper {
        height: 180px;
    }
    
    .course-content {
        padding: 18px;
        gap: 10px;
    }
    
    .course-title {
        font-size: 16px;
        min-height: 42px;
    }
    
    .course-type-badge,
    .course-feature-badge {
        font-size: 11px;
        padding: 6px 12px;
    }
    
    .current-price {
        font-size: 18px;
    }
    
    .premium-course-card:hover {
        transform: translateY(-6px) scale(1.01);
    }
}

@media (max-width: 576px) {
    .course-card {
        margin-bottom: 20px;
    }

    .course-image-wrapper {
        height: 160px;
    }

    .course-content {
        padding: 16px;
    }

    .course-meta {
        gap: 8px;
    }

    .meta-item {
        font-size: 11px;
    }
}

/* ===================================
   ENHANCED ANIMATIONS & EFFECTS
   =================================== */

/* Loading Animation */
@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

.course-card.loading .premium-course-card {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200px 100%;
    animation: shimmer 1.5s infinite;
}

/* Floating Animation for Featured Cards */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
}

.course-card.featured .premium-course-card {
    animation: float 3s ease-in-out infinite;
}

/* Pulse Effect for New Courses */
@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(145, 68, 255, 0.06);
    }
    50% {
        box-shadow: 0 4px 20px rgba(145, 68, 255, 0.2);
    }
    100% {
        box-shadow: 0 4px 20px rgba(145, 68, 255, 0.06);
    }
}

.course-card.new .premium-course-card {
    animation: pulse 2s ease-in-out infinite;
}

/* Stagger Animation for Course Grid - Make optional */
.course-card.animate-in {
    opacity: 0;
    transform: translateY(30px);
    animation: slideInUp 0.6s ease-out forwards;
}

/* Ensure course cards are visible by default */
.course-card {
    opacity: 1;
    transform: translateY(0);
}

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-card:nth-child(1) { animation-delay: 0.1s; }
.course-card:nth-child(2) { animation-delay: 0.2s; }
.course-card:nth-child(3) { animation-delay: 0.3s; }
.course-card:nth-child(4) { animation-delay: 0.4s; }
.course-card:nth-child(5) { animation-delay: 0.5s; }
.course-card:nth-child(6) { animation-delay: 0.6s; }
.course-card:nth-child(7) { animation-delay: 0.7s; }
.course-card:nth-child(8) { animation-delay: 0.8s; }

/* ===================================
   ACCESSIBILITY & FOCUS STATES
   =================================== */

.course-card-link:focus {
    outline: none;
}

.course-card-link:focus .premium-course-card {
    box-shadow:
        0 20px 60px rgba(145, 68, 255, 0.15),
        0 0 0 3px rgba(145, 68, 255, 0.3);
    transform: translateY(-8px);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .premium-course-card {
        border: 2px solid #9144ff;
        background: #ffffff;
    }

    .course-type-badge,
    .course-feature-badge {
        border: 1px solid currentColor;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .premium-course-card,
    .course-image,
    .course-card-link,
    .course-card {
        transition: none;
        animation: none;
    }

    .premium-course-card:hover {
        transform: none;
    }
}

/* ===================================
   DARK MODE SUPPORT
   =================================== */

@media (prefers-color-scheme: dark) {
    .premium-course-card {
        background: rgba(31, 41, 55, 0.95);
        border-color: rgba(145, 68, 255, 0.2);
        color: #f9fafb;
    }

    .course-title {
        color: #f9fafb;
    }

    .premium-course-card:hover .course-title {
        color: #a855f7;
    }

    .instructor-info,
    .meta-item,
    .rating-count {
        color: #d1d5db;
    }

    .rating-number {
        color: #f9fafb;
    }

    .course-category-tag {
        background: rgba(55, 65, 81, 0.9);
        color: #d1d5db;
    }

    .enrollment-info {
        background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(34, 197, 94, 0.1) 100%);
        color: #4ade80;
    }

    .course-price {
        border-top-color: rgba(145, 68, 255, 0.2);
    }
}

/* ===================================
   PRINT STYLES
   =================================== */

@media print {
    .premium-course-card {
        background: white !important;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
    }

    .course-type-badge,
    .course-feature-badge,
    .course-category-tag {
        background: #f3f4f6 !important;
        color: #374151 !important;
        box-shadow: none !important;
    }
}