/* Course Detail Page Styles */
.course-detail {
    padding: 40px 0 80px 0;
    background: var(--light-gray);
}

/* Breadcrumb */
.breadcrumb-nav {
    background: var(--light-gray);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
    margin: 0;
    background: none;
    padding: 0;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-item a:hover {
    color: var(--secondary-color);
}

.breadcrumb-item.active {
    color: #6c757d;
}

/* Course Hero Section */
.course-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.course-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.05) 0%, transparent 50%);
    animation: floatingBg 20s ease-in-out infinite;
}

@keyframes floatingBg {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}

.course-hero-content {
    position: relative;
    z-index: 2;
}

.course-badge-large {
    margin-bottom: 1.5rem;
}

.course-badge-large .badge {
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: 20px;
}

.course-hero-title {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: slideInLeft 1s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.course-hero-description {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.5;
    animation: slideInLeft 1s ease-out 0.3s both;
}

.course-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    animation: slideInUp 1s ease-out 0.6s both;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.stat-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.stat-item:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.stat-item i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.course-hero-sidebar {
    position: relative;
    z-index: 2;
}

.course-image-container {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

.course-image-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
}

.course-hero-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.course-price-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 2rem;
    color: white;
}

.price-display {
    text-align: center;
}

.price-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.price-value {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.price-installments {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Course Content */
.course-content {
    padding: 4rem 0;
    background: white;
}

.course-tabs {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 2rem;
}

.course-tabs .nav-tabs {
    border-bottom: none;
    background: var(--light-gray);
    padding: 0;
    margin: 0;
}

.course-tabs .nav-link {
    background: none;
    border: none;
    color: var(--text-color);
    font-weight: 600;
    padding: 1.5rem 2rem;
    border-radius: 0;
    transition: all 0.3s ease;
    position: relative;
}

.course-tabs .nav-link:hover {
    background: rgba(243, 156, 18, 0.1);
    color: var(--secondary-color);
}

.course-tabs .nav-link.active {
    background: white;
    color: var(--secondary-color);
    border-bottom: 3px solid var(--secondary-color);
}

.course-tabs .nav-link i {
    opacity: 0.7;
}

.course-tabs .nav-link.active i {
    opacity: 1;
}

.tab-content {
    padding: 0;
}

.tab-content-wrapper {
    padding: 3rem;
}

.tab-content-wrapper h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-weight: bold;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.course-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #666;
    margin-bottom: 2rem;
}

.course-highlights {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
}

.course-highlights h4 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.highlight-list {
    list-style: none;
    padding: 0;
}

.highlight-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.8rem;
    color: #666;
}

.highlight-list li::before {
    content: '•';
    color: var(--secondary-color);
    font-weight: bold;
    margin-right: 0.8rem;
    margin-top: 0.1rem;
}

/* Curriculum Modules */
.curriculum-modules {
    margin-top: 1rem;
}

.module-item {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.module-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.module-item:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--light-gray);
    cursor: pointer;
    transition: all 0.3s ease;
}

.module-header:hover {
    background: #e9ecef;
}

.module-info {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.module-number {
    font-size: 0.9rem;
    color: var(--secondary-color);
    font-weight: bold;
}

.module-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.module-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #666;
    font-size: 0.9rem;
}

.module-meta i {
    transition: transform 0.3s ease;
}

.module-header[aria-expanded="true"] .module-meta i {
    transform: rotate(180deg);
}

.module-content {
    padding: 1.5rem;
}

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

.lesson-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.lesson-item i {
    color: var(--secondary-color);
    margin-right: 0.8rem;
    font-size: 1.1rem;
}

.lesson-duration {
    color: #666;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Requirements and Certificate Content */
.requirements-content,
.certificate-info {
    margin-top: 1rem;
}

.requirement-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
}

.requirement-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.requirement-section h4 i {
    color: var(--secondary-color);
    margin-right: 0.5rem;
}

.requirements-list {
    list-style: none;
    padding: 0;
}

.requirements-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.8rem;
    color: #666;
}

.requirements-list li::before {
    content: '•';
    color: var(--secondary-color);
    font-weight: bold;
    margin-right: 0.8rem;
    margin-top: 0.1rem;
}

.certificate-preview {
    text-align: center;
    margin-bottom: 2rem;
}

.certificate-mockup {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 3rem 2rem;
    border-radius: 15px;
    display: inline-block;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.certificate-mockup i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.certificate-mockup h4 {
    margin-bottom: 1rem;
    font-weight: bold;
}

.certificate-features {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.certificate-features li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1rem;
    color: #666;
}

.certificate-features li i {
    color: #28a745;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.completion-requirements {
    background: #e8f5e8;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #28a745;
}

.completion-requirements h5 {
    color: #28a745;
    margin-bottom: 1rem;
    font-weight: 600;
}

.completion-requirements ul {
    list-style: none;
    padding: 0;
}

.completion-requirements li {
    margin-bottom: 0.5rem;
    color: #666;
}

.completion-requirements li::before {
    content: '✓';
    color: #28a745;
    font-weight: bold;
    margin-right: 0.8rem;
}

/* Enrollment Card */
.enrollment-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    padding: 2rem;
    border-left: 4px solid var(--secondary-color);
    position: sticky;
    top: 20px;
}

.enrollment-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.price-section {
    margin-bottom: 1rem;
}

.current-price {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.installments {
    color: #666;
    font-size: 1rem;
}

.enrollment-features {
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
    color: #666;
}

.feature-item i {
    color: var(--secondary-color);
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.enrollment-actions {
    margin-bottom: 2rem;
}

.enrollment-actions .btn {
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.enrollment-actions .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.enrollment-actions .btn:hover::before {
    left: 100%;
}

.enrollment-actions .btn-primary {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.3);
}

.enrollment-actions .btn-primary:hover {
    background: #e67e22;
    border-color: #e67e22;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(243, 156, 18, 0.4);
}

.trust-indicators {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: #666;
    font-size: 0.9rem;
}

.trust-item i {
    color: #28a745;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

/* Course Info Card */
.course-info-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    padding: 2rem;
    border-left: 4px solid var(--secondary-color);
}

.course-info-card h4 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: bold;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.info-list {
    margin: 0;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.info-label {
    font-weight: 600;
    color: var(--primary-color);
}

.info-value {
    color: #666;
    text-align: right;
}

/* Related Courses */
.related-courses {
    padding: 4rem 0;
    background: var(--light-gray);
}

.related-courses .section-title {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 2rem;
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.related-course-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border-left: 4px solid var(--secondary-color);
    height: 100%;
    opacity: 0;
    transform: translateY(30px);
}

.related-course-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.related-course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.related-course-card .course-image {
    height: 180px;
    overflow: hidden;
    position: relative;
}

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

.related-course-card:hover .course-image img {
    transform: scale(1.05);
}

.related-course-card .course-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.7rem;
    font-weight: bold;
}

.related-course-card .course-content {
    padding: 1.5rem;
}

.related-course-card .course-content h5 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-weight: 600;
    font-size: 1.1rem;
    line-height: 1.3;
}

.related-course-card .course-content p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

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

.course-footer .course-price {
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .course-hero-title {
        font-size: 2rem;
    }
    
    .course-hero-description {
        font-size: 1.1rem;
    }
    
    .course-stats {
        gap: 1rem;
    }
    
    .stat-item {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }
    
    .course-hero-image {
        height: 250px;
    }
    
    .price-value {
        font-size: 2rem;
    }
    
    .tab-content-wrapper {
        padding: 2rem 1.5rem;
    }
    
    .module-header {
        padding: 1rem;
    }
    
    .module-content {
        padding: 1rem;
    }
    
    .enrollment-card {
        position: static;
        margin-top: 2rem;
    }
    
    .course-tabs .nav-link {
        padding: 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .course-hero {
        padding: 3rem 0;
    }
    
    .course-hero-title {
        font-size: 1.8rem;
    }
    
    .course-stats {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .stat-item {
        justify-content: center;
    }
    
    .current-price {
        font-size: 2rem;
    }
    
    .related-courses {
        padding: 3rem 0;
    }
}