@import url('https://fonts.googleapis.com/css2?family=Anek+Bangla:wght@100..800&display=swap');

:root {
    --primary-color: #1a4b8c;
    --secondary-color: #f8f9fa;
    --accent-color: #e63946;
    --text-color: #333;
    --light-text: #6c757d;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body {
    font-family: "Anek Bangla", sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #f5f7fa;
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color), #0d2b52);
    color: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.container {
    max-width: 1200px;
}

.enrolled-count {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
}

.course-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.course-description {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* Tabs */
.tab-container {
    display: flex;
    border-bottom: 1px solid #dee2e6;
    margin-bottom: 2rem;
}

.tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--light-text);
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab:hover:not(.active) {
    color: var(--text-color);
    border-bottom-color: #adb5bd;
}

/* Section Header */
.section-header {
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Course Stats */
.course-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.course-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--light-text);
    font-size: 0.9rem;
}

.course-stat i {
    color: var(--primary-color);
}

/* Accordion */
.accordion {
    --bs-accordion-border-color: #e9ecef;
    --bs-accordion-btn-padding-x: 1.25rem;
    --bs-accordion-btn-padding-y: 1rem;
    --bs-accordion-active-color: var(--primary-color);
    --bs-accordion-active-bg: #f8f9fa;
    margin-bottom: 2rem;
}

.accordion-button {
    font-weight: 600;
}

.accordion-button:not(.collapsed) {
    box-shadow: none;
}

.section-header-inner {
    width: 100%;
}

.section-title-text {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.section-meta {
    font-size: 0.85rem;
    color: var(--light-text);
}

/* Lecture List */
.lecture-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lecture-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid #f1f1f1;
    transition: background-color 0.2s;
}

.lecture-item:hover {
    background-color: #f8f9fa;
}

.lecture-icon {
    margin-right: 1rem;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.lecture-content {
    flex: 1;
}

.lecture-title {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.lecture-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--light-text);
}

.tag {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.tag.free {
    background-color: #e3f2fd;
    color: #1976d2;
}

.lecture-status {
    color: var(--light-text);
    font-size: 1rem;
}

.fa-lock {
    color: var(--accent-color);
}

/* Sidebar */
.course-sidebar {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    position: sticky;
    top: 1rem;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.includes-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.includes-list {
    list-style: none;
    padding: 0;
    margin-bottom: 1.5rem;
}

.includes-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.includes-item img {
    width: 18px;
    margin-top: 3px;
}

/* Price */
.price-container {
    margin-bottom: 1.5rem;
}

.current-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.original-price {
    font-size: 1.25rem;
    text-decoration: line-through;
    color: var(--light-text);
    margin-left: 0.5rem;
}

/* Buttons */
.btn-enroll {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    margin-bottom: 1.5rem;
    transition: background-color 0.3s;
}
.instructor-profile img{
    width: 100px;
    height: 100px;
}
.btn-enroll:hover {
    background-color: #0d3a7a;
    color: white;
}

/* Share */
.share-title {
    font-size: 0.9rem;
    color: var(--light-text);
    margin-bottom: 0.75rem;
    text-align: center;
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
}

.share-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: white;
    font-size: 0.9rem;
    transition: transform 0.2s;
}

.share-button:hover {
    transform: translateY(-2px);
    color: white;
}

.copy { background-color: #6c757d; }
.facebook { background-color: #3b5998; }
.twitter { background-color: #1da1f2; }
.email { background-color: #d44638; }
.whatsapp { background-color: #25d366; }

/* Mobile Enroll */
.mobile-enroll {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.mobile-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.mobile-price .current {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.btn-mobile-enroll {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.5rem 1.25rem;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 991.98px) {
    .course-title {
        font-size: 1.8rem;
    }
    
    .course-description {
        font-size: 1rem;
    }
}

@media (max-width: 767.98px) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .tab-container {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 0.5rem;
    }
    
    .tab {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .course-stats {
        gap: 1rem;
    }
}