/* ===== COURSE DETAIL SPECIFIC STYLES ===== */
/* Using unique class names to prevent CSS conflicts */

/* Breadcrumb Section */
.course-breadcrumb-section {
    padding: 120px 0 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid #dee2e6;
}

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

.course-breadcrumb-section .breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.course-breadcrumb-section .breadcrumb-item a:hover {
    color: #0097a7;
    text-decoration: underline;
}

.course-breadcrumb-section .breadcrumb-item.active {
    color: var(--text-muted);
    font-weight: 600;
}

/* Course Header Section */
.course-header-section {
    padding: 40px 0;
    background: #ffffff;
    border-bottom: 2px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.course-header-info .course-meta {
    display: flex;
    gap: 50px;
    flex-wrap: nowrap;
    justify-content: flex-start;
    align-items: center;
    width: 100%;
}

.course-header-info .meta-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    min-width: 120px;
    flex-shrink: 0;
}

.course-header-info .meta-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-header-info .meta-value {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.course-header-info .author-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.course-header-info .rating-stars {
    color: #ffc107;
    margin-right: 8px;
    font-size: 1.1rem;
}

.course-header-info .rating-text {
    color: var(--text-primary);
    font-weight: 700;
}

/* Course Main Section */
.course-main-section {
    padding: 60px 0;
    background: #ffffff;
}

/* Course Hero Section */
.course-hero-section {
    margin-bottom: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 50px;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.course-hero-section::before {
    content: '';
    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"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.course-hero-content {
    display: flex;
    align-items: center;
    gap: 40px;
    position: relative;
    z-index: 2;
}

.course-hero-content .hero-text {
    flex: 1;
}

.course-hero-content .course-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.course-hero-content .course-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    margin: 0;
    font-weight: 400;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.course-hero-content .hero-image {
    flex-shrink: 0;
}

.course-hero-content .hero-image img {
    max-width: 250px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Hero Video Container Styles */
.hero-video-container {
    position: relative;
    width: 100%;
}

.video-wrapper {
    position: relative;
    width: 100%;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    background: #000;
}

.sample-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.video-overlay:hover {
    background: rgba(0, 0, 0, 0.6);
}

.play-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #0097a7);
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(0, 188, 212, 0.4);
    margin-bottom: 20px;
}

.play-button:hover {
    transform: scale(1.1);
    background: linear-gradient(135deg, #0097a7, #00796b);
    box-shadow: 0 12px 35px rgba(0, 188, 212, 0.6);
}

.play-button:active {
    transform: scale(0.95);
}

.sample-video-label {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    padding: 8px 16px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    animation: pulse 2s infinite;
    text-align: center;
    margin-top: -19px;
}

.label-text {
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 20px rgba(255, 107, 53, 0.6);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    }
}

/* Video playing state */
.video-wrapper.playing .video-overlay {
    opacity: 0;
    pointer-events: none;
}

.video-wrapper.playing:hover .video-overlay {
    opacity: 1;
    pointer-events: all;
}

/* Responsive video styles */
@media (max-width: 768px) {
    .play-button {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .label-text {
        font-size: 0.8rem;
    }
}

@media (max-width: 575.98px) {
    .play-button {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .label-text {
        font-size: 0.75rem;
    }
}

/* Mobile Sticky Header */
.mobile-sticky-header {
    position: fixed;
    top: 58px; /* Below the main navbar */
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-bottom: 2px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    z-index: 999;
    padding: 12px 0;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    display: none;
}

.mobile-sticky-header.show {
    transform: translateY(0);
}

.mobile-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
}

.mobile-price {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 80px;
}

.price-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.price-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--success-color);
    line-height: 1;
}

.mobile-duration {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.mobile-duration i {
    color: var(--primary-color);
    font-size: 0.85rem;
}

.mobile-enroll {
    flex-shrink: 0;
}

.enroll-btn-mobile {
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--success-color), #059669);
    border: none;
    color: white;
    box-shadow: 0 3px 10px rgba(16, 185, 129, 0.3);
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.enroll-btn-mobile:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.4);
    color: white;
}

.enroll-btn-mobile:active {
    transform: translateY(0);
}

/* Show mobile sticky header only on mobile devices */
@media (max-width: 991.98px) {
    .mobile-sticky-header {
        display: block;
    }
    
    /* Adjust hero section top margin to account for sticky header */
    .hero-section {
        margin-top: 88px !important;
    }
}

@media (max-width: 575.98px) {
    .mobile-sticky-header {
        padding: 10px 0;
    }
    
    .mobile-header-content {
        gap: 10px;
    }
    
    .mobile-price {
        min-width: 70px;
    }
    
    .price-value {
        font-size: 1rem;
    }
    
    .mobile-duration {
        font-size: 0.85rem;
    }
    
    .enroll-btn-mobile {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

/* Modern Course Cards Section */
.modern-courses-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 80px 0;
}

.section-header {
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.modern-course-card {
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.modern-course-card-inner {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.modern-course-card-inner:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modern-course-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

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

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

.modern-course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 188, 212, 0.8) 0%, rgba(16, 185, 129, 0.8) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modern-course-badge {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modern-course-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.modern-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 15px;
}

.modern-rating i {
    color: #ffc107;
    font-size: 1.1rem;
}

.modern-rating-text {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
}

.modern-course-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.modern-course-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-grow: 1;
}

.modern-course-duration,
.modern-course-lectures {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.modern-course-duration i,
.modern-course-lectures i {
    color: var(--primary-color);
    font-size: 0.85rem;
}

.modern-course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.modern-course-price {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.price-amount {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--success-color);
    line-height: 1;
}

.price-original {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
    line-height: 1;
}

.modern-enroll-btn {
    background: linear-gradient(135deg, var(--primary-color), #00acc1);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modern-enroll-btn:hover {
    background: linear-gradient(135deg, #00acc1, var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 188, 212, 0.3);
    color: white;
}

.modern-enroll-btn i {
    font-size: 0.85rem;
}

.modern-enroll-text {
    font-size: 0.8rem;
}

/* Responsive styles for modern course cards */
@media (max-width: 991.98px) {
    .modern-courses-section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .modern-course-card {
        margin-bottom: 25px;
    }
}

@media (max-width: 767.98px) {
    .modern-courses-section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .modern-course-content {
        padding: 20px;
    }
    
    .modern-course-title {
        font-size: 1.1rem;
    }
    
    .modern-course-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .modern-course-footer {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .modern-enroll-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Course Tabs Section */
.course-tabs-section {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #e9ecef;
}

.course-tabs {
    border-bottom: 3px solid #e9ecef;
    padding: 0;
    margin: 0;
    background: #f8f9fa;
}

.course-tabs .nav-link {
    border: none;
    background: transparent;
    color: #6c757d;
    font-weight: 600;
    padding: 25px 35px;
    margin: 0;
    border-radius: 0;
    position: relative;
    transition: all 0.3s ease;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-tabs .nav-link:hover {
    color: var(--primary-color);
    background: rgba(0, 188, 212, 0.05);
}

.course-tabs .nav-link.active {
    color: var(--primary-color);
    background: #ffffff;
    border-bottom: 4px solid var(--primary-color);
    font-weight: 700;
}

/* Prevent scrolling behavior on tab buttons */
.course-tabs .nav-link {
    scroll-behavior: auto !important;
    scroll-margin: 0 !important;
}

.course-tabs .nav-link:focus {
    outline: none;
    box-shadow: none;
}

.course-tab-content {
    padding: 50px 40px;
}

/* Course Info Content */
.course-info-content .info-section {
    margin-bottom: 50px;
}

.course-info-content .info-section h3 {
    color: var(--text-primary);
    margin-bottom: 25px;
    font-size: 1.75rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.course-info-content .info-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.course-info-content .info-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.learning-objectives {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.objective-item {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid var(--success-color);
    transition: all 0.3s ease;
}

.objective-item:hover {
    background: #e9ecef;
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.objective-item i {
    color: var(--success-color);
    font-size: 1.4rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.objective-item span {
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 500;
    font-size: 1rem;
}

/* Curriculum Content */
.curriculum-content .curriculum-section {
    margin-bottom: 50px;
}

.curriculum-content .curriculum-section h4 {
    color: var(--text-primary);
    margin-bottom: 30px;
    font-size: 1.5rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.curriculum-content .curriculum-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.curriculum-items {
    border: 2px solid #e9ecef;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.curriculum-item {
    display: flex;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid #e9ecef;
    transition: all 0.3s ease;
    background: #ffffff;
}

.curriculum-item:last-child {
    border-bottom: none;
}

.curriculum-item:hover {
    background: #f8f9fa;
    transform: translateX(5px);
}

.curriculum-item .item-number {
    background: linear-gradient(135deg, var(--primary-color), #0097a7);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 25px;
    flex-shrink: 0;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.curriculum-item .item-content {
    flex: 1;
}

.curriculum-item .item-content h5 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

.curriculum-item .item-meta {
    display: flex;
    gap: 20px;
    align-items: center;
}

.preview-badge {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    padding: 6px 15px;
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.duration {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}

.duration::before {
    content: '⏱️';
    font-size: 1rem;
}

/* Advisor Content */
.advisor-content .advisor-section h4 {
    color: var(--text-primary);
    margin-bottom: 35px;
    font-size: 1.75rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.advisor-content .advisor-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.advisor-cards {
    display: grid;
    gap: 30px;
}

.advisor-card {
    display: flex;
    gap: 25px;
    padding: 30px;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    background: #ffffff;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.advisor-card:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.advisor-avatar {
    flex-shrink: 0;
}

.advisor-avatar img {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: 0 8px 20px rgba(0, 188, 212, 0.3);
}

.advisor-info h5 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.25rem;
    font-weight: 700;
}

.advisor-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.advisor-rating {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.advisor-rating .stars {
    color: #ffc107;
    font-size: 1.1rem;
}

.advisor-rating span {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.advisor-stats {
    display: flex;
    gap: 25px;
    margin-bottom: 18px;
}

.advisor-stats span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 5px 12px;
    background: #f8f9fa;
    border-radius: 20px;
    border: 1px solid #e9ecef;
}

.advisor-bio {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
    font-style: italic;
}

/* Reviews Content */
.reviews-content .reviews-header {
    display: flex;
    gap: 50px;
    margin-bottom: 50px;
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
    border: 2px solid #e9ecef;
}

.overall-rating {
    text-align: center;
    flex-shrink: 0;
    min-width: 150px;
}

.overall-rating .rating-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0, 188, 212, 0.2);
}

.overall-rating .rating-label {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.overall-rating .rating-count {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
}

.rating-bars {
    flex: 1;
}

.rating-bar {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.rating-bar .bar-label {
    width: 25px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.1rem;
}

.rating-bar .bar-container {
    flex: 1;
    height: 10px;
    background: #e9ecef;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.rating-bar .bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 5px;
    transition: width 0.8s ease;
    box-shadow: 0 2px 4px rgba(0, 188, 212, 0.3);
}

.rating-bar .bar-percentage {
    width: 50px;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: right;
    font-weight: 600;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.review-item {
    display: flex;
    gap: 25px;
    padding: 30px;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    background: #ffffff;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.review-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
    border-color: var(--primary-color);
}

.review-avatar img {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 3px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.review-content {
    flex: 1;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.review-header h5 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
}

.review-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 5px 12px;
    background: #f8f9fa;
    border-radius: 20px;
    border: 1px solid #e9ecef;
}

.review-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 1rem;
}

.review-actions {
    display: flex;
    gap: 25px;
}

.review-actions span {
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid #e9ecef;
    background: #f8f9fa;
    font-weight: 500;
}

.review-actions span:hover {
    color: var(--primary-color);
    background: #e3f2fd;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Add Review Section Styles */
.add-review-section {
    margin: 50px 0;
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
    border: 2px solid #e9ecef;
}

.add-review-section h4 {
    color: var(--text-primary);
    margin-bottom: 30px;
    font-size: 1.75rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.add-review-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.review-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.rating-input-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.rating-input-section label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.star-rating {
    display: flex;
    flex-direction: row-reverse;
    gap: 5px;
    align-items: center;
}

.star-rating input[type="radio"] {
    display: none;
}

.star-rating .star {
    font-size: 2rem;
    color: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.star-rating .star:hover,
.star-rating .star:hover ~ .star,
.star-rating input[type="radio"]:checked ~ .star {
    color: #ffc107;
    transform: scale(1.1);
}

.rating-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    margin-left: 10px;
}

.review-text-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.review-text-section label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.review-text-section textarea {
    width: 100%;
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    transition: all 0.3s ease;
    background: #ffffff;
}

.review-text-section textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
}

.review-text-section textarea::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.review-form-actions {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.review-form-actions .btn {
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.submit-review-btn {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

.submit-review-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.clear-review-btn {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: white;
    box-shadow: 0 5px 15px rgba(107, 114, 128, 0.3);
}

.clear-review-btn:hover {
    background: linear-gradient(135deg, #4b5563, #374151);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(107, 114, 128, 0.4);
}

/* Review form responsive styles */
@media (max-width: 768px) {
    .add-review-section {
        padding: 30px 20px;
        margin: 40px 0;
    }
    
    .add-review-section h4 {
        font-size: 1.5rem;
    }
    
    .star-rating .star {
        font-size: 1.8rem;
    }
    
    .review-form-actions {
        flex-direction: column;
    }
    
    .review-form-actions .btn {
        width: 100%;
        padding: 15px 20px;
    }
}

@media (max-width: 575.98px) {
    .add-review-section {
        padding: 25px 15px;
        margin: 30px 0;
    }
    
    .add-review-section h4 {
        font-size: 1.3rem;
    }
    
    .star-rating .star {
        font-size: 1.6rem;
    }
    
    .review-text-section textarea {
        padding: 15px;
        font-size: 0.95rem;
    }
}

/* Error message styles */
.error-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #ef4444;
    color: white;
    padding: 15px 20px;
    border-radius: 6px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 10000;
    animation: slideIn 0.3s ease;
}

.error-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-content i {
    font-size: 20px;
}

/* New review styles */
.new-review {
    border: 2px solid var(--success-color) !important;
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%) !important;
}

.new-review .review-stars {
    margin-bottom: 15px;
}

.new-review .review-stars i {
    font-size: 1.1rem;
    margin-right: 2px;
}

/* Course Sidebar */
.course-sidebar {
    position: sticky;
    top: 140px;
}

.course-preview-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 35px;
    border: 2px solid #e9ecef;
}

.preview-video {
    position: relative;
    background: #f8f9fa;
}

.preview-video img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.play-button:hover {
    background: white;
    transform: translate(-50%, -50%) scale(1.15);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.play-button i {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-left: 4px;
}

.preview-content {
    padding: 30px;
}

.course-price {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 25px;
}

.course-price .price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    text-shadow: 0 2px 4px rgba(0, 188, 212, 0.2);
}

.enroll-btn {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

.enroll-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.money-back-guarantee {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 15px;
    border: 1px solid #e9ecef;
    font-weight: 500;
}

.money-back-guarantee i {
    color: var(--success-color);
    font-size: 1.2rem;
}

.course-details {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 12px 0;
    border-bottom: 1px solid #f1f3f4;
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item i {
    color: var(--primary-color);
    width: 25px;
    font-size: 1.1rem;
}

/* Top Instructors Card */
.top-instructors-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    padding: 30px;
    border: 2px solid #e9ecef;
}

.top-instructors-card h4 {
    color: var(--text-primary);
    margin-bottom: 30px;
    font-size: 1.4rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.top-instructors-card h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.instructor-item {
    display: flex;
    gap: 18px;
    padding: 25px 0;
    border-bottom: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.instructor-item:last-child {
    border-bottom: none;
}

.instructor-item:hover {
    transform: translateX(5px);
}

.instructor-avatar img {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 3px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.instructor-info h5 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 1.1rem;
    font-weight: 700;
}

.instructor-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

.instructor-rating {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.instructor-rating .stars {
    color: #ffc107;
    font-size: 1rem;
}

.instructor-rating span {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
}

.instructor-stats {
    display: flex;
    gap: 20px;
}

.instructor-stats span {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 10px;
    background: #f8f9fa;
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

/* Related Courses Section */
.related-courses-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.related-courses-section .section-header {
    text-align: center;
    margin-bottom: 50px;
}

.related-courses-section .section-header h3 {
    color: var(--text-primary);
    font-size: 2.5rem;
    font-weight: 800;
    position: relative;
    padding-bottom: 20px;
}

.related-courses-section .section-header h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.related-course-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    border: 2px solid #e9ecef;
}

.related-course-card:hover {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.related-course-card .course-image {
    position: relative;
    overflow: hidden;
}

.related-course-card .course-image img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: all 0.5s ease;
}

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

.related-course-card .course-content {
    padding: 25px;
}

.related-course-card .course-meta {
    display: flex;
    gap: 18px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.related-course-card .instructor {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.related-course-card .category {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.related-course-card .rating {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.related-course-card h4 {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 18px;
    line-height: 1.4;
    font-weight: 700;
    min-height: 60px;
}

.related-course-card .course-stats {
    display: flex;
    gap: 25px;
    margin-bottom: 25px;
}

.related-course-card .course-stats span {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}

.related-course-card .course-stats span::before {
    content: '📚';
    font-size: 1rem;
}

.related-course-card .course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.enroll-btn-small {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 3px 10px rgba(16, 185, 129, 0.3);
}

.enroll-btn-small:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.4);
}

.related-course-card .price {
    color: var(--primary-color);
    font-weight: 800;
    font-size: 1.3rem;
    text-shadow: 0 1px 2px rgba(0, 188, 212, 0.2);
}

/* Footer Section */
.footer-section {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: white;
    padding: 80px 0 30px;
}

.footer-section h5,
.footer-section h6 {
    color: white;
    margin-bottom: 25px;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.footer-section h5::after,
.footer-section h6::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #0097a7);
    border-radius: 2px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    font-size: 1rem;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    padding: 5px 0;
    display: inline-block;
}

.footer-links ul li a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: 18px;
    margin-top: 25px;
}

.social-links a {
    display: inline-block;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-align: center;
    line-height: 45px;
    border-radius: 50%;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(0, 188, 212, 0.4);
}

.app-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.app-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    padding: 15px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.2);
    font-weight: 500;
}

.app-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(0, 188, 212, 0.4);
}

.footer-bottom {
    border-top: 2px solid rgba(255, 255, 255, 0.1);
    margin-top: 50px;
    padding-top: 30px;
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 25px;
    justify-content: flex-end;
}

.footer-bottom-links li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    padding: 5px 0;
}

.footer-bottom-links li a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hover Effects */
.hover-lift {
    transition: all 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== COURSE HERO META INFO STYLES ===== */
.course-hero-meta-info {
    margin-top: 2.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border-radius: 16px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.course-hero-meta-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.course-hero-meta-info .course-meta-row {
    display: flex;
    gap: 4rem;
    align-items: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.course-hero-meta-info .course-meta-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 160px;
    transition: transform 0.3s ease;
}

.course-hero-meta-info .course-meta-item:hover {
    transform: translateY(-2px);
}

.course-hero-meta-info .course-meta-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.course-hero-meta-info .course-meta-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.course-hero-meta-info .course-rating-display {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
}

.course-hero-meta-info .course-stars {
    color: #ffd700;
    font-size: 1.4rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    display: flex;
    gap: 2px;
}

.course-hero-meta-info .course-rating-text {
    font-size: 1.1rem;
    font-weight: 800;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Responsive adjustments for course hero meta info */
@media (max-width: 1200px) {
    .course-hero-meta-info .course-meta-row {
        gap: 3rem;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 150px;
    }
}

@media (max-width: 992px) {
    .course-hero-meta-info {
        padding: 1.75rem;
        margin-top: 2rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 2.5rem;
        justify-content: flex-start;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 140px;
    }
}

@media (max-width: 768px) {
    .course-hero-meta-info {
        padding: 1.5rem;
        margin-top: 1.75rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 2rem;
        justify-content: flex-start;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 130px;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.85rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 1.15rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1.3rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 1rem;
        padding: 0.4rem 0.8rem;
    }
}

@media (max-width: 575.98px) {
    .course-hero-meta-info {
        padding: 1.25rem;
        margin-top: 1.5rem;
        border-radius: 12px;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 120px;
        width: 100%;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.8rem;
        margin-bottom: 0.5rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 1.1rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1.2rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 0.95rem;
        padding: 0.35rem 0.7rem;
    }
}

@media (max-width: 480px) {
    .course-hero-meta-info {
        padding: 1rem;
        margin-top: 1.25rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 1.25rem;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 100px;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.75rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 1rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1.1rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 0.9rem;
        padding: 0.3rem 0.6rem;
    }
}

/* ===== COURSE HERO ACTION BUTTONS STYLES ===== */
.course-hero-action-buttons {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    position: relative;
    z-index: 1;
}

.course-action-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.course-action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.course-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.15) 100%);
}

.course-action-btn:hover::before {
    opacity: 1;
}

.course-action-btn i {
    font-size: 1.25rem;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.course-action-btn span {
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.course-pdf-btn {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.08) 100%);
}

.course-video-btn {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.08) 100%);
}

/* Responsive adjustments for course action buttons */
@media (max-width: 768px) {
    .course-hero-action-buttons {
        flex-direction: column;
        gap: 1rem;
        margin-top: 1.5rem;
    }
    
    .course-action-btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
        justify-content: center;
    }
    
    .course-action-btn i {
        font-size: 1.1rem;
    }
}

@media (max-width: 575.98px) {
    .course-hero-action-buttons {
        margin-top: 1.25rem;
    }
    
    .course-action-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        border-radius: 10px;
    }
    
    .course-action-btn i {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .course-hero-action-buttons {
        margin-top: 1rem;
    }
    
    .course-action-btn {
        padding: 0.7rem 0.9rem;
        font-size: 0.85rem;
    }
    
    .course-action-btn i {
        font-size: 0.95rem;
    }
}

/* ===== HERO INFO PILLS STYLES ===== */
.hero-info-pills {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.info-pill {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(15px);
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 180px;
    height: 48px;
}

.info-pill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.info-pill:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.15);
}

.info-pill:hover::before {
    opacity: 1;
}

.info-pill .pill-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 0.375rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.info-pill .pill-icon i {
    font-size: 1rem;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.info-pill .pill-content {
    flex: 1;
    position: relative;
    z-index: 1;
}

.info-pill .pill-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.125rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.info-pill .pill-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    line-height: 1.2;
}

.info-pill .pill-rating {
    display: flex;
    flex-direction: row;
    gap: 0.75rem;
    align-items: center;
    justify-content: center;
}

.info-pill .pill-stars {
    color: #ffd700;
    font-size: 0.875rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    display: flex;
    gap: 1px;
}

.info-pill .pill-rating-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.125rem 0.5rem;
    border-radius: 0.375rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Responsive adjustments for hero info pills */
@media (max-width: 1200px) {
    .hero-info-pills {
        gap: 1.25rem;
    }
    
    .info-pill {
        min-width: 170px;
        padding: 1.125rem 1.375rem;
    }
}

@media (max-width: 992px) {
    .hero-info-pills {
        gap: 1rem;
        margin-top: 1.75rem;
    }
    
    .info-pill {
        min-width: 160px;
        padding: 0.75rem 1.25rem;
        height: 44px;
    }
    
    .info-pill .pill-icon {
        width: 28px;
        height: 28px;
    }
    
    .info-pill .pill-icon i {
        font-size: 0.9rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.7rem;
    }
    
    .info-pill .pill-value {
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    .hero-info-pills {
        flex-direction: column;
        gap: 1rem;
        margin-top: 1.5rem;
    }
    
    .info-pill {
        min-width: auto;
        width: 100%;
        justify-content: flex-start;
        height: 42px;
    }
    
    .info-pill .pill-icon {
        width: 26px;
        height: 26px;
    }
    
    .info-pill .pill-icon i {
        font-size: 0.85rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.7rem;
        margin-bottom: 0.125rem;
    }
    
    .info-pill .pill-value {
        font-size: 0.8rem;
    }
    
    .info-pill .pill-rating {
        gap: 0.5rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.8rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.7rem;
        padding: 0.1rem 0.4rem;
    }
}

@media (max-width: 575.98px) {
    .hero-info-pills {
        margin-top: 1.25rem;
    }
    
    .info-pill {
        padding: 0.875rem 1.125rem;
        border-radius: 14px;
    }
    
    .info-pill .pill-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }
    
    .info-pill .pill-icon i {
        font-size: 1.1rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.75rem;
        letter-spacing: 0.6px;
    }
    
    .info-pill .pill-value {
        font-size: 1rem;
    }
    
    .info-pill .pill-rating {
        gap: 0.5rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.95rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.85rem;
        padding: 0.15rem 0.5rem;
        border-radius: 10px;
    }
}

@media (max-width: 480px) {
    .hero-info-pills {
        margin-top: 1rem;
    }
    
    .info-pill {
        padding: 0.75rem 1rem;
        border-radius: 12px;
    }
    
    .info-pill .pill-icon {
        width: 38px;
        height: 38px;
        border-radius: 8px;
    }
    
    .info-pill .pill-icon i {
        font-size: 1rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.7rem;
        letter-spacing: 0.5px;
    }
    
    .info-pill .pill-value {
        font-size: 0.95rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.9rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.8rem;
        padding: 0.1rem 0.4rem;
        border-radius: 8px;
    }
}

/* ===== RESPONSIVE DESIGN ===== */

/* Large Desktop */
@media (max-width: 1400px) {
    .course-hero-content .course-title {
        font-size: 2.8rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 3.5rem;
    }
}

/* Desktop */
@media (max-width: 1199.98px) {
    .course-hero-content .course-title {
        font-size: 2.5rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 3rem;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 150px;
    }
    
    .course-sidebar {
        position: static;
        margin-top: 50px;
    }
}

/* Tablet Landscape */
@media (max-width: 991.98px) {
    .course-hero-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    
    .course-hero-content .course-title {
        font-size: 2.2rem;
    }
    
    .course-hero-meta-info {
        padding: 1.75rem;
        margin-top: 2rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 2.5rem;
        justify-content: center;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 140px;
        align-items: center;
    }
    
    .course-hero-action-buttons {
        justify-content: center;
    }
    
    .hero-info-pills {
        gap: 1rem;
        margin-top: 1.75rem;
        justify-content: center;
    }
    
    .info-pill {
        min-width: 160px;
        padding: 0.75rem 1.25rem;
        height: 44px;
    }
    
    .info-pill .pill-icon {
        width: 28px;
        height: 28px;
    }
    
    .info-pill .pill-icon i {
        font-size: 0.9rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.7rem;
    }
    
    .info-pill .pill-value {
        font-size: 0.8rem;
    }
    
    .course-tabs {
        padding: 0 20px;
    }
    
    .course-tabs .nav-link {
        padding: 20px 25px;
        font-size: 0.9rem;
    }
    
    .course-tab-content {
        padding: 40px 30px;
    }
    
    .course-sidebar {
        position: static;
        margin-top: 50px;
    }
    
    .reviews-header {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .footer-bottom-links {
        justify-content: center;
        margin-top: 20px;
    }
    
    .course-header-info .course-meta {
        gap: 30px;
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Tablet Portrait */
@media (max-width: 767.98px) {
    .course-breadcrumb-section {
        padding: 100px 0 20px;
    }
    
    .course-header-section {
        padding: 30px 0;
    }
    
    .course-main-section {
        padding: 40px 0;
    }
    
    .course-hero-section {
        padding: 35px 25px;
        margin-bottom: 35px;
    }
    
    .course-hero-content .course-title {
        font-size: 1.8rem;
    }
    
    .course-hero-meta-info {
        padding: 1.5rem;
        margin-top: 1.75rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 2rem;
        justify-content: center;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 130px;
        align-items: center;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.85rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 1.15rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1.3rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 1rem;
        padding: 0.4rem 0.8rem;
    }
    
    .course-hero-action-buttons {
        flex-direction: column;
        gap: 1rem;
        margin-top: 1.5rem;
    }
    
    .course-action-btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
        justify-content: center;
    }
    
    .course-action-btn i {
        font-size: 1.1rem;
    }
    
    .hero-info-pills {
        flex-direction: column;
        gap: 1rem;
        margin-top: 1.5rem;
    }
    
    .info-pill {
        min-width: auto;
        width: 100%;
        justify-content: flex-start;
        height: 42px;
        margin-bottom: 10px;
        display: inline-table;
        text-align: center;
    }
    
    .info-pill .pill-icon {
        width: 26px;
        height: 26px;
    }
    
    .info-pill .pill-icon i {
        font-size: 0.85rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.7rem;
        margin-bottom: 0.125rem;
    }
    
    .info-pill .pill-value {
        font-size: 0.8rem;
    }
    
    .info-pill .pill-rating {
        gap: 0.5rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.8rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.7rem;
        padding: 0.1rem 0.4rem;
    }
    
    .course-tabs {
        padding: 0 15px;
    }
    
    .course-tabs .nav-link {
        padding: 15px 20px;
        font-size: 0.8rem;
    }
    
    .course-tab-content {
        padding: 30px 20px;
    }
    
    .course-header-info .course-meta {
        gap: 25px;
        flex-direction: column;
        align-items: center;
    }
    
    .course-header-info .meta-item {
        align-items: center;
        text-align: center;
    }
    
    .learning-objectives {
        grid-template-columns: 1fr;
    }
    
    .curriculum-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .curriculum-item .item-number {
        margin-right: 0;
    }
    
    .advisor-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .review-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .review-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .course-price {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .instructor-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .related-courses-section {
        padding: 60px 0;
    }
    
    .footer-section {
        padding: 60px 0 25px;
    }
}

/* Mobile Large */
@media (max-width: 575.98px) {
    .course-hero-section {
        padding: 30px 20px;
        border-radius: 15px;
    }
    
    .course-hero-content .course-title {
        font-size: 1.6rem;
    }
    
    .course-hero-meta-info {
        padding: 1.25rem;
        margin-top: 1.5rem;
        border-radius: 12px;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 1.5rem;
        flex-direction: column;
        align-items: center;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 120px;
        width: 100%;
        align-items: center;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.8rem;
        margin-bottom: 0.5rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 1.1rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1.2rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 0.95rem;
        padding: 0.35rem 0.7rem;
    }
    
    .course-hero-action-buttons {
        margin-top: 1.25rem;
    }
    
    .course-action-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        border-radius: 10px;
    }
    
    .course-action-btn i {
        font-size: 1rem;
    }
    
    .hero-info-pills {
        margin-top: 1.25rem;
    }
    
    .info-pill {
        padding: 0.875rem 1.125rem;
        border-radius: 14px;
    }
    
    .info-pill .pill-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }
    
    .info-pill .pill-icon i {
        font-size: 1.1rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.75rem;
        letter-spacing: 0.6px;
    }
    
    .info-pill .pill-value {
        font-size: 1rem;
    }
    
    .info-pill .pill-rating {
        gap: 0.5rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.95rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.85rem;
        padding: 0.15rem 0.5rem;
        border-radius: 10px;
    }
    
    .course-tabs .nav-link {
        padding: 12px 15px;
        font-size: 0.75rem;
    }
    
    .course-tab-content {
        padding: 25px 15px;
    }
    
    .course-header-info .course-meta {
        gap: 20px;
    }
    
    .meta-item {
        min-width: 100px;
    }
    
    .related-courses-section .section-header h3 {
        font-size: 2rem;
    }
}

/* Mobile Small */
@media (max-width: 480px) {
    .course-hero-section {
        padding: 25px 15px;
        border-radius: 12px;
    }
    
    .course-hero-content .course-title {
        font-size: 1.4rem;
    }
    
    .course-hero-meta-info {
        padding: 1rem;
        margin-top: 1.25rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 1.25rem;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 100px;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.75rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 1rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1.1rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 0.9rem;
        padding: 0.3rem 0.6rem;
    }
    
    .course-hero-action-buttons {
        margin-top: 1rem;
    }
    
    .course-action-btn {
        padding: 0.7rem 0.9rem;
        font-size: 0.85rem;
    }
    
    .course-action-btn i {
        font-size: 0.95rem;
    }
    
    .hero-info-pills {
        margin-top: 1rem;
    }
    
    .info-pill {
        padding: 0.75rem 1rem;
        border-radius: 12px;
    }
    
    .info-pill .pill-icon {
        width: 38px;
        height: 38px;
        border-radius: 8px;
    }
    
    .info-pill .pill-icon i {
        font-size: 1rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.7rem;
        letter-spacing: 0.5px;
    }
    
    .info-pill .pill-value {
        font-size: 0.95rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.9rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.8rem;
        padding: 0.1rem 0.4rem;
        border-radius: 8px;
    }
}

/* Mobile Extra Small */
@media (max-width: 375px) {
    .course-hero-section {
        padding: 20px 12px;
    }
    
    .course-hero-content .course-title {
        font-size: 1.3rem;
    }
    
    .course-hero-meta-info {
        padding: 0.875rem;
    }
    
    .course-hero-meta-info .course-meta-row {
        gap: 1rem;
    }
    
    .course-hero-meta-info .course-meta-item {
        min-width: 90px;
    }
    
    .course-hero-meta-info .course-meta-label {
        font-size: 0.7rem;
    }
    
    .course-hero-meta-info .course-meta-value {
        font-size: 0.95rem;
    }
    
    .course-hero-meta-info .course-stars {
        font-size: 1rem;
    }
    
    .course-hero-meta-info .course-rating-text {
        font-size: 0.85rem;
        padding: 0.25rem 0.5rem;
    }
    
    .course-action-btn {
        padding: 0.6rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .course-action-btn i {
        font-size: 0.9rem;
    }
    
    .info-pill {
        padding: 0.625rem 0.875rem;
    }
    
    .info-pill .pill-icon {
        width: 35px;
        height: 35px;
    }
    
    .info-pill .pill-icon i {
        font-size: 0.9rem;
    }
    
    .info-pill .pill-label {
        font-size: 0.65rem;
    }
    
    .info-pill .pill-value {
        font-size: 0.875rem;
    }
    
    .info-pill .pill-stars {
        font-size: 0.85rem;
    }
    
    .info-pill .pill-rating-text {
        font-size: 0.75rem;
        padding: 0.075rem 0.35rem;
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .course-hero-section {
        padding: 20px 30px;
        margin-bottom: 25px;
    }
    
    .course-hero-content .course-title {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    .course-hero-meta-info {
        margin-top: 1.5rem;
        padding: 1.25rem;
    }
    
    .course-hero-action-buttons {
        margin-top: 1.25rem;
    }
    
    .hero-info-pills {
        margin-top: 1.25rem;
    }
    
    .course-breadcrumb-section {
        padding: 80px 0 15px;
    }
    
    .course-header-section {
        padding: 25px 0;
    }
    
    .course-main-section {
        padding: 30px 0;
    }
}