/* Modern Course Details CSS */
:root {
    --primary-color: #ee4c43c9;
    --secondary-color: #3f37c9;
    --accent-color: #4895ef;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --success-color: #4cc9f0;
    --text-color: #333;
    --text-light: #6c757d;
    --border-radius: 12px;
    --box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

/* Base Styles */
body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #f9fafc;
    margin: 0;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-top: 0;
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Hero Section */
.course-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.badge-container {
    margin-bottom: 20px;
}

.badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin: 0 5px;
}

.badge.featured {
    background: #ffc107;
    color: var(--dark-color);
}

.course-hero h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    line-height: 1.2;
}

.course-hero .lead {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

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

.hero-cta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

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

.current-price {
    font-size: 1.8rem;
    font-weight: 700;
}

.original-price {
    font-size: 1.2rem;
    text-decoration: line-through;
    opacity: 0.7;
}

.btn-enroll {
    background: white;
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-enroll:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="none"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" fill="%23f9fafc" opacity=".25"/><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" fill="%23f9fafc" opacity=".5"/><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="%23f9fafc"/></svg>');
    background-size: cover;
}

/* Main Course Container */
.course-container {
    margin-top: -60px;
    position: relative;
    z-index: 3;
}

/* Course Tabs */
.course-tabs {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: 30px;
}

.nav-tabs {
    border-bottom: 1px solid #eee;
    padding: 0 20px;
}

.nav-tabs .nav-link {
    border: none;
    color: var(--text-light);
    font-weight: 500;
    padding: 15px 20px;
    position: relative;
}

.nav-tabs .nav-link:hover {
    color: var(--primary-color);
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    background: transparent;
}

.nav-tabs .nav-link.active:after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
}

.tab-content {
    padding: 30px;
}

/* Course Description */
.course-description {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 30px;
}

/* Learning Outcomes */
.learning-outcomes {
    background: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 25px;
    margin-top: 30px;
}

.learning-outcomes h4 {
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.outcome-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.outcome-item i {
    color: var(--success-color);
    font-size: 1.1rem;
    margin-top: 3px;
}

/* Accordion Styles */
.accordion {
    --bs-accordion-border-color: #eee;
    --bs-accordion-btn-focus-box-shadow: none;
}

.accordion-button {
    font-weight: 500;
    padding: 15px 20px;
}

.accordion-button:not(.collapsed) {
    background: rgba(67, 97, 238, 0.05);
    color: var(--primary-color);
}

.accordion-body {
    padding: 15px 20px;
}

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

.lesson-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid #f0f0f0;
}

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

.lesson-list li i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* Instructor Card */
.instructor-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-top: 20px;
}

.instructor-image {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
}

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-info h4 {
    margin-bottom: 5px;
}

.instructor-info .title {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.rating {
    margin-bottom: 10px;
}

.rating i {
    color: #ffc107;
    font-size: 0.9rem;
}

.rating span {
    font-size: 0.9rem;
    margin-left: 5px;
    color: var(--text-light);
}

.stats {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
}

.stat {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
}

.stat i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.bio {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Reviews Section */
.average-rating {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: var(--border-radius);
}

.rating-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--dark-color);
    line-height: 1;
}

.stars {
    margin: 10px 0;
}

.stars i {
    color: #ffc107;
    font-size: 1.2rem;
}

.total-reviews {
    color: var(--text-light);
    font-size: 0.9rem;
}

.review-cards {
    display: grid;
    gap: 20px;
}

.review-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

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

.reviewer {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviewer img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.reviewer-info h5 {
    margin-bottom: 5px;
    font-size: 1rem;
}

.reviewer-info .stars {
    margin: 0;
}

.reviewer-info .stars i {
    font-size: 0.8rem;
}

.review-date {
    font-size: 0.8rem;
    color: var(--text-light);
}

.review-content h6 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.review-content p {
    font-size: 0.95rem;
    color: var(--text-color);
    line-height: 1.7;
}

/* Sidebar Styles */
.course-sidebar {
    position: sticky;
    top: 20px;
}

.video-preview {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--box-shadow);
}

.video-thumbnail img {
    width: 100%;
    display: block;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.play-button i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-left: 3px;
}

.play-button:hover {
    background: white;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 0.8rem;
}

.enroll-box {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
}

.enroll-box h4 {
    margin-bottom: 20px;
    font-size: 1.3rem;
    text-align: center;
}

.price {
    text-align: center;
    margin-bottom: 20px;
}

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

.price .original {
    font-size: 1.2rem;
    text-decoration: line-through;
    color: var(--text-light);
    margin-left: 10px;
}

.course-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.course-features li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.course-features li i {
    color: var(--success-color);
}

.btn-enroll-full {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-enroll-full:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.includes {
    border-top: 1px solid #eee;
    padding-top: 20px;
}

.includes h5 {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

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

.includes li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.includes li i {
    color: var(--primary-color);
    width: 20px;
    text-align: center;
}

.certification-badge {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 15px;
}

.certification-badge img {
    width: 70px;
    height: auto;
}

.badge-info h5 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

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

/* Benefits Section */
.benefits-section {
    padding: 80px 0;
    background: #f8fafd;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
}

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

.benefit-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    background: rgba(67, 97, 238, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

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

.benefit-card h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.benefit-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

/* Testimonials Section */
.testimonials-section {
    padding: 80px 0;
    background: white;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: #f8fafd;
    border-radius: var(--border-radius);
    padding: 25px;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: 20px;
    right: 20px;
    opacity: 0.1;
    font-size: 3rem;
    color: var(--primary-color);
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h5 {
    margin-bottom: 5px;
    font-size: 1rem;
}

.author-info span {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: #f8fafd;
}

/* Final CTA */
.final-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-cta-primary {
    background: white;
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    color: var(--primary-color);
}

.btn-cta-secondary {
    background: transparent;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: transparent;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .course-hero h1 {
        font-size: 2.3rem;
    }
    
    .hero-stats {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .course-hero {
        padding: 60px 0 100px;
    }
    
    .course-hero h1 {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .instructor-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .instructor-info .stats {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .course-hero {
        padding: 50px 0 90px;
    }
    
    .course-hero h1 {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 10px;
    }
    
    .tab-content {
        padding: 20px 15px;
    }
}