/* ============================================
   EDRONA LMS - Course Details Page Stylesheet
   Extends the main style.css theme
   ============================================ */

/* ============================================
   Course Hero Section
   ============================================ */
.course-hero-section {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #1a5f7a 0%, #159895 100%);
    position: relative;
    overflow: hidden;
    color: var(--white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="80" r="3" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: cover;
    background-position: center;
    opacity: 0.5;
}

.course-hero-section .container {
    position: relative;
    z-index: 1;
}

/* Breadcrumb */
.course-breadcrumb {
    margin-bottom: 20px;
}

.course-breadcrumb .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.course-breadcrumb .breadcrumb-item,
.course-breadcrumb .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.85) !important;
    text-decoration: none;
    transition: var(--transition-fast);
}

.course-breadcrumb .breadcrumb-item a:hover {
    color: var(--white) !important;
}

.course-breadcrumb .breadcrumb-item.active {
    color: var(--white) !important;
}

.course-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: rgba(255, 255, 255, 0.6) !important;
}

/* Institution */
.course-institution {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9) !important;
}

.course-institution span {
    color: rgba(255, 255, 255, 0.85) !important;
}

.institution-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--white) !important;
    text-decoration: none;
    transition: var(--transition-normal);
}

.institution-link span {
    color: var(--white) !important;
}

.institution-link:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white) !important;
}

.institution-link:hover span {
    color: var(--white) !important;
}

.institution-logo {
    height: 30px;
    width: auto;
}

/* Course Thumbnail Image - Professional Design */
.course-thumb-wrapper {
    margin-bottom: 28px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.35);
    max-width: 560px;
    min-height: 100px;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.course-thumb-wrapper:hover {
    box-shadow: 0 16px 56px rgba(0, 0, 0, 0.45);
    border-color: rgba(255, 255, 255, 0.15);
}

.course-thumb-wrapper.no-image {
    display: none;
}

.course-thumb-wrapper.load-error {
    background: linear-gradient(135deg, rgba(26,95,122,0.3) 0%, rgba(21,152,149,0.15) 100%);
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-thumb-wrapper.load-error::before {
    content: '\F315';
    font-family: 'bootstrap-icons';
    font-size: 2.5rem;
    color: rgba(255,255,255,0.5);
    opacity: 0.6;
}

.course-thumb-image {
    width: 100%;
    height: auto;
    display: block;
    max-height: 340px;
    object-fit: cover;
    transition: transform 0.5s ease;
    will-change: transform;
}

.course-thumb-wrapper:hover .course-thumb-image {
    transform: scale(1.03);
}

@media (max-width: 991px) {
    .course-thumb-wrapper {
        max-width: 100%;
        border-radius: 14px;
        box-shadow: 0 10px 36px rgba(0, 0, 0, 0.3);
    }
    
    .course-thumb-image {
        max-height: 320px;
    }

    .course-thumb-wrapper.load-error {
        min-height: 120px;
    }
}

@media (max-width: 767px) {
    .course-thumb-wrapper {
        border-radius: 12px;
        box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
        margin-bottom: 22px;
    }
    
    .course-thumb-image {
        max-height: 280px;
    }

    .course-thumb-wrapper.load-error {
        min-height: 100px;
    }
}

@media (max-width: 575px) {
    .course-thumb-wrapper {
        border-radius: 10px;
        box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        margin-bottom: 18px;
        border-width: 0.5px;
    }
    
    .course-thumb-image {
        max-height: 220px;
    }

    .course-thumb-wrapper.load-error {
        min-height: 80px;
    }

    .course-thumb-wrapper.load-error::before {
        font-size: 2rem;
    }
}

/* Hero Title */
.course-hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.2;
}

/* Hero Rating */
.course-hero-rating {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.rating-stars {
    display: flex;
    align-items: center;
    gap: 5px;
}

.rating-stars i {
    color: #fbbf24 !important;
    font-size: 1.1rem;
}

.rating-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white) !important;
    margin-left: 5px;
}

.rating-count {
    color: rgba(255, 255, 255, 0.85) !important;
    font-size: 0.95rem;
}

/* Hero Meta */
.course-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.course-hero-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9) !important;
}

.course-hero-meta .meta-item i {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9) !important;
}

.course-hero-meta .meta-item span,
.course-hero-meta .meta-item strong {
    color: var(--white) !important;
}

/* Pricing Column - Align with thumbnail */
@media (min-width: 992px) {
    .pricing-col {
        padding-top: 42px;
    }
}

/* Pricing Card */
.course-pricing-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: 35px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 120px;
}

.price-section {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.current-price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.original-price {
    font-size: 1.5rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.discount-badge {
    padding: 6px 14px;
    background: #10b981;
    color: var(--white);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

.price-note {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 25px;
}

.pricing-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 25px;
}

.pricing-actions .btn-block {
    width: 100%;
}

.enroll-btn {
    box-shadow: 0 4px 15px rgba(26, 95, 122, 0.3);
}

.pricing-actions .btn-outline-light {
    border-color: var(--border-color);
    color: var(--text-color);
}

.pricing-actions .btn-outline-light:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

/* Quick Info */
.quick-info {
    padding-top: 25px;
    border-top: 1px solid var(--border-color);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    color: var(--text-color);
}

.info-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* ============================================
   Course Features Strip
   ============================================ */
.course-features-strip {
    padding: 60px 0;
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: var(--light-bg);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.feature-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    min-width: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--white);
}

.feature-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.feature-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* ============================================
   Main Course Content Section
   ============================================ */
.course-content-section {
    padding: 80px 0;
    background: var(--light-bg);
}

/* Course Navigation */
.course-nav {
    position: sticky;
    top: 50px;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 15px 25px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.course-nav .nav-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    border: none;
}

.course-nav .nav-link {
    padding: 10px 20px;
    border-radius: var(--radius-md);
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.course-nav .nav-link:hover {
    background: var(--light-bg);
    color: var(--primary-color);
}

.course-nav .nav-link.active {
    background: var(--primary-color);
    color: var(--white);
}

/* Content Sections */
.content-section {
    margin-bottom: 50px;
    scroll-margin-top: 180px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
}

.content-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
}

.content-box h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.content-box p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 15px;
}

.content-box ul {
    list-style: none;
    padding: 0;
}

.content-box ul li {
    padding: 8px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-color);
}

.content-box ul li::before {
    content: "•";
    position: absolute;
    left: 10px;
    color: var(--primary-color);
    font-size: 1.5rem;
    line-height: 1;
}

/* Overview List */
.overview-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.overview-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.overview-item:hover {
    background: rgba(26, 95, 122, 0.05);
}

.overview-item i {
    font-size: 1.3rem;
    color: #10b981;
    margin-top: 2px;
    flex-shrink: 0;
}

.overview-item span {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.6;
}

/* Prerequisites Box */
.prerequisites-box {
    background: linear-gradient(135deg, #fff7ed 0%, #fffbf0 100%);
    border-left: 4px solid #f59e0b;
}

/* Learning Outcomes */
.learning-outcomes {
    margin-top: 20px;
}

.outcome-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
}

.outcome-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* ============================================
   Syllabus Accordion
   ============================================ */
.syllabus-accordion {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.accordion-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.accordion-item:hover {
    box-shadow: var(--shadow-md);
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 25px 30px;
    cursor: pointer;
    transition: var(--transition-fast);
    background: var(--white);
}

.accordion-header:hover {
    background: var(--light-bg);
}

.accordion-item.active .accordion-header {
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
}

.module-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.module-duration {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.accordion-icon {
    font-size: 1.3rem;
    color: var(--text-muted);
    transition: var(--transition-normal);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
}

.lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lesson-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 30px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.lesson-list li:last-child {
    border-bottom: none;
}

.lesson-list li:hover {
    background: var(--light-bg);
}

.lesson-list li i {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-right: 12px;
}

.lesson-duration {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ============================================
   Instructor Cards
   ============================================ */
.instructor-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.instructor-card:hover {
    box-shadow: var(--shadow-md);
}

.instructor-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.instructor-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--light-bg);
}

.instructor-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.instructor-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

.instructor-bio {
    font-size: 0.95rem;
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   FAQ Accordion
   ============================================ */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.faq-question:hover {
    background: var(--light-bg);
}

.faq-question h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--dark-color);
    margin: 0;
}

.faq-icon {
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 25px 20px;
    margin: 0;
    color: var(--text-color);
    line-height: 1.7;
}

/* ============================================
   Sidebar Widgets
   ============================================ */
.course-sidebar {
    position: sticky;
    top: 120px;
}

.sidebar-widget {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
}

.sidebar-widget h3, .sidebar-widget h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 20px;
}

/* Video Widget */
.video-widget {
    padding: 0;
    overflow: hidden;
}

.video-preview {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.video-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.video-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-play-btn i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-left: 5px;
}

.video-widget h4 {
    padding: 20px 25px;
    margin: 0;
}

/* Share Widget */
.share-buttons {
    display: flex;
    gap: 10px;
}

.share-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    transition: var(--transition-normal);
}

.share-btn.facebook {
    background: #1877f2;
}

.share-btn.twitter {
    background: #1da1f2;
}

.share-btn.linkedin {
    background: #0a66c2;
}

.share-btn.whatsapp {
    background: #25d366;
}

.share-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* ============================================
   Related Courses Section - Enhanced Design
   ============================================ */
.related-courses-section {
    padding: 10px 0;
    background: linear-gradient(180deg, var(--light-bg) 0%, var(--white) 100%);
    position: relative;
}

.related-courses-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    gap: 30px;
}

.header-content {
    flex: 1;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(26, 95, 122, 0.1);
    border: 1px solid rgba(26, 95, 122, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-badge i {
    font-size: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin: 0;
}

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-normal);
    white-space: nowrap;
}

.view-all-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(26, 95, 122, 0.25);
}

.view-all-btn i {
    transition: var(--transition-fast);
}

.view-all-btn:hover i {
    transform: translateX(3px);
}

/* Related Courses Grid */
.related-courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

/* Enhanced Course Card */
/* Card container is the visual card shell */
.related-course-card {
    height: 100%;
}

/* Card link acts as the visual card shell */
.related-course-card .card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    transition: var(--transition-normal);
    text-decoration: none;
    color: inherit;
}

.related-course-card .card-link:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.12);
    border-color: rgba(26, 95, 122, 0.25);
}

/* Image area */
.related-course-card .course-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    flex-shrink: 0;
}

.related-course-card .course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.related-course-card .card-link:hover .course-image img {
    transform: scale(1.07);
}

.related-course-card .course-image .course-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.55) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.related-course-card .card-link:hover .course-overlay {
    opacity: 1;
}

.related-course-card .course-overlay i {
    font-size: 1.6rem;
    color: #fff;
    background: var(--primary-color);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Content area */
.related-course-card .course-content {
    padding: 18px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.related-course-card .course-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-course-card .course-content .institution-name {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.related-course-card .course-content .course-rating {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.related-course-card .course-content .course-rating .stars i {
    color: #f59e0b;
    font-size: 0.75rem;
}

.related-course-card .course-content .rating-value {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.related-course-card .course-content .reviews-count {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.related-course-card .course-actions {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    text-align: right;
}

.related-course-card .btn-enroll {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-fast);
}

.related-course-card .btn-enroll:hover {
    background: var(--primary-dark);
    color: var(--white);
}

.course-card-inner {
    height: 100%;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
}

.course-card-inner:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: rgba(26, 95, 122, 0.3);
}

/* Course Image Wrapper */
.course-image-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.course-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.course-card-inner:hover .course-image-wrapper img {
    transform: scale(1.1);
}

/* Course Overlay */
.course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

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

.quick-view-btn {
    padding: 12px 24px;
    background: var(--white);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-normal);
    transform: translateY(20px);
}

.course-card-inner:hover .quick-view-btn {
    transform: translateY(0);
}

.quick-view-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 5px 15px rgba(26, 95, 122, 0.4);
}

/* Course Badge */
.course-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.course-badge.trending {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.course-badge.bestseller {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.course-badge.popular {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

/* Wishlist Button */
.wishlist-btn-card {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
    z-index: 2;
}

.wishlist-btn-card i {
    font-size: 1.1rem;
    color: var(--text-color);
    transition: var(--transition-fast);
}

.wishlist-btn-card:hover {
    background: var(--white);
    transform: scale(1.1);
}

.wishlist-btn-card:hover i,
.wishlist-btn-card.active i {
    color: #ef4444;
}

.wishlist-btn-card.active i {
    font-weight: 900;
}

/* Course Card Body */
.course-card-body {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

/* Course Header */
.course-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.course-category-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
}

.course-level {
    display: flex;
    align-items: center;
}

.level-badge {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.level-badge.beginner {
    background: #d1fae5;
    color: #065f46;
}

.level-badge.intermediate {
    background: #fef3c7;
    color: #92400e;
}

.level-badge.advanced {
    background: #fee2e2;
    color: #991b1b;
}

/* Course Title */
.course-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
}

.course-card-title a {
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition-fast);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

/* Course Description */
.course-card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Instructor Info */
.course-instructor-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    margin-bottom: 20px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.instructor-thumb {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--light-bg);
}

.instructor-name {
    font-size: 0.9rem;
    color: var(--text-color);
    font-weight: 500;
}

/* Course Meta */
.course-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.meta-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.meta-item i {
    color: var(--primary-color);
    font-size: 1rem;
}

.meta-item strong {
    color: var(--text-color);
}

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

.course-price-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-current {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-original {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.enroll-btn-card {
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-normal);
    white-space: nowrap;
}

.enroll-btn-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 95, 122, 0.4);
    color: var(--white);
}

.enroll-btn-card i {
    transition: var(--transition-fast);
}

.enroll-btn-card:hover i {
    transform: translateX(3px);
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 1199px) {
    .course-hero-title {
        font-size: 2.4rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .related-courses-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 991px) {
    .course-hero-section {
        padding: 120px 0 60px;
    }

    .course-hero-title {
        font-size: 2rem;
    }

    .course-pricing-card {
        position: static;
        margin-top: 40px;
    }

    .course-nav {
        top: 80px;
    }

    .course-sidebar {
        position: static;
        margin-top: 50px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .course-hero-section {
        padding: 100px 0 50px;
    }

    .course-hero-title {
        font-size: 1.75rem;
    }

    .current-price {
        font-size: 2.5rem;
    }

    .course-hero-meta {
        flex-direction: column;
        gap: 15px;
    }

    .course-nav .nav-pills {
        justify-content: center;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .content-box {
        padding: 20px;
    }

    .accordion-header, .lesson-list li {
        padding: 20px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .view-all-btn {
        width: 100%;
        justify-content: center;
    }

    .related-courses-section {
        padding: 70px 0;
    }

    .related-courses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }

    .course-card-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }

    .enroll-btn-card {
        justify-content: center;
    }

    .course-price-section {
        justify-content: space-between;
    }
}

@media (max-width: 575px) {
    .course-hero-title {
        font-size: 1.5rem;
    }

    .course-pricing-card {
        padding: 25px;
    }

    .pricing-actions .btn {
        font-size: 0.95rem;
        padding: 12px 20px;
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
    }

    .module-info h4 {
        font-size: 1.05rem;
    }

    .lesson-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .instructor-header {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .related-courses-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}