/* =============================================
   Course Detail Page Styles
   ============================================= */

.course-detail-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--dark) 100%);
    padding: 100px 0 60px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.breadcrumb a {
    color: var(--text-muted);
    transition: color 0.3s;
}

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

.breadcrumb i {
    font-size: 0.7rem;
}

.course-badge-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.badge {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
}

.badge-new {
    background: var(--gradient-accent);
    color: var(--dark);
}

.badge-level {
    background: rgba(30, 111, 255, 0.2);
    color: #5DADE2;
    border: 1px solid rgba(30, 111, 255, 0.3);
}

.course-header-content h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.2;
}

.course-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 30px;
    max-width: 900px;
}

.course-stats {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.stat-item i {
    color: var(--accent);
}

.course-detail-section {
    padding: 80px 0;
    background: var(--dark);
}

.course-detail-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
}

.content-block {
    margin-bottom: 60px;
}

.content-block h2 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.content-block h2 i {
    color: var(--accent);
    font-size: 1.6rem;
}

.skills-grid {
    display: grid;
    gap: 25px;
}

.skill-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    padding: 20px;
    background: linear-gradient(145deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    transition: all 0.3s;
}

.skill-item:hover {
    border-color: rgba(245, 158, 11, 0.3);
    transform: translateX(5px);
}

.skill-item i {
    color: var(--accent);
    font-size: 1.3rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.skill-item h4 {
    color: var(--white);
    font-size: 1.05rem;
    margin-bottom: 5px;
    font-weight: 600;
}

.skill-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.audience-list {
    display: grid;
    gap: 15px;
}

.audience-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: rgba(255,255,255,0.02);
    border-left: 3px solid var(--accent);
    border-radius: 8px;
    color: var(--text-muted);
}

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

.careers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.career-card {
    text-align: center;
    padding: 25px 20px;
    background: linear-gradient(145deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    transition: all 0.3s;
}

.career-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
    transform: translateY(-5px);
}

.career-card i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 15px;
    display: block;
}

.career-card h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.career-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.course-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-card {
    background: linear-gradient(145deg, var(--dark-card), var(--dark-lighter));
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
}

.sidebar-card h3 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-card h3 i {
    color: var(--accent);
}

.enrollment-card {
    border: 2px solid var(--accent);
}

.price-section {
    text-align: center;
    margin-bottom: 25px;
}

.price-original {
    color: var(--text-muted);
    font-size: 1.2rem;
    text-decoration: line-through;
}

.price-current {
    color: var(--accent);
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
    margin: 10px 0;
}

.price-save {
    color: #4CAF50;
    font-size: 0.95rem;
    font-weight: 600;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
    margin-bottom: 12px;
}

.btn-block:last-child {
    margin-bottom: 0;
}

.course-includes,
.prerequisites-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.course-includes li,
.prerequisites-list li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.course-includes li:last-child,
.prerequisites-list li:last-child {
    border-bottom: none;
}

.course-includes li i,
.prerequisites-list li i {
    color: var(--accent);
    width: 20px;
}

/* Responsive */
@media (max-width: 1024px) {
    .course-detail-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .course-sidebar {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .course-detail-header {
        padding: 80px 0 40px;
    }
    
    .course-detail-section {
        padding: 40px 0;
    }
    
    .course-detail-grid {
        grid-template-columns: 1fr !important;
        gap: 30px;
        padding: 0 15px;
    }
    
    .course-main-content {
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .course-sidebar {
        width: 100%;
        max-width: 100%;
        order: 2;
    }
    
    .course-stats {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stat-item {
        font-size: 0.85rem;
        flex: 0 1 auto;
        min-width: 100px;
    }
    
    .content-block {
        padding: 0;
        margin-bottom: 30px;
    }
    
    .content-block h2 {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr !important;
        gap: 15px;
    }
    
    .careers-grid {
        grid-template-columns: 1fr !important;
        gap: 15px;
    }
    
    .audience-list {
        gap: 10px;
    }
    
    .audience-item {
        font-size: 0.9rem;
        padding: 12px 15px;
    }
    
    .curriculum {
        padding: 0;
    }
    
    .module {
        margin-bottom: 20px;
    }
    
    .module h3 {
        font-size: 1.1rem;
    }
    
    .module ul li {
        font-size: 0.9rem;
        padding: 10px 12px;
    }
    
    .instructor-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .instructor-avatar {
        margin: 0 auto;
    }
    
    .instructor-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .sidebar-card {
        padding: 20px 15px;
    }
    
    .price-section {
        padding: 20px 15px;
    }
    
    .btn-block {
        width: 100%;
        padding: 14px;
    }
    
    .course-includes li,
    .prerequisites-list li {
        font-size: 0.9rem;
        padding: 8px 0;
    }
}

/* Small phones - Extra optimization */
@media (max-width: 480px) {
    .course-detail-header {
        padding: 70px 0 30px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .course-badge-group {
        gap: 8px;
        flex-wrap: wrap;
    }
    
    .badge {
        font-size: 10px;
        padding: 4px 10px;
    }
    
    .course-detail-header h1 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .course-subtitle {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .course-stats {
        gap: 10px;
    }
    
    .stat-item {
        font-size: 0.75rem;
        min-width: 80px;
    }
    
    .content-block h2 {
        font-size: 1.3rem;
    }
    
    .content-block h3 {
        font-size: 1.1rem;
    }
    
    .content-block h4 {
        font-size: 1rem;
    }
    
    .skill-item,
    .career-card {
        padding: 15px;
    }
    
    .module h3 {
        font-size: 1rem;
    }
    
    .sidebar-card h3 {
        font-size: 1.1rem;
    }
    
    .price-original-large {
        font-size: 1.5rem;
    }
    
    .price-current-large {
        font-size: 2rem;
    }
}