/* Page Header */
.page-header {
    background: var(--gradient-hero);
    padding: 4rem 0 3rem;
    color: white;
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.breadcrumb-custom {
    background: transparent;
    padding: 0;
}

.breadcrumb-custom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.breadcrumb-custom .active {
    color: white;
}

/* Section Headers */
.section-header {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 2rem;
    position: relative;
}

.section-header:after {
    content: '';
    width: 60px;
    height: 3px;
    background: var(--accent);
    display: block;
    margin-top: 0.6rem;
    border-radius: 3px;
}

/* Course Cards */
.course-card {
    background: white;
    border-radius: 1.2rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.course-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    padding: 1.5rem;
    color: white;
}

.course-header i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.course-header h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0;
}

.course-body {
    padding: 1.5rem;
    flex: 1;
}

.course-detail-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.course-detail-item i {
    width: 20px;
    color: var(--secondary);
}

.course-footer {
    padding: 1rem 1.5rem 1.5rem;
    border-top: 1px solid #eef2f6;
}

.btn-course {
    background: var(--accent);
    color: var(--primary-dark);
    border-radius: 40px;
    padding: 0.6rem 1.2rem;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    display: inline-block;
    transition: 0.2s;
    border: none;
}

.btn-course:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
}

.btn-outline-course {
    border: 1.5px solid var(--primary);
    background: transparent;
    border-radius: 40px;
    padding: 0.6rem 1.2rem;
    font-weight: 500;
    font-size: 0.85rem;
    text-decoration: none;
    display: inline-block;
    transition: 0.2s;
    color: var(--primary);
}

.btn-outline-course:hover {
    background: var(--primary);
    color: white;
}

.badge-duration {
    background: rgba(62, 140, 140, 0.12);
    color: var(--secondary-dark);
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    font-size: 0.7rem;
    font-weight: 600;
}

/* Category Tabs */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
    border-bottom: none;
}

.category-btn {
    background: white;
    border: 1px solid #dee2e6;
    padding: 0.6rem 1.3rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-main);
    cursor: pointer;
    transition: 0.2s;
}

.category-btn:hover,
.category-btn.active {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

/* Footer */
footer {
    background: #0C1622;
    color: #9aa3b5;
    padding: 3rem 0 2rem;
    margin-top: 3rem;
}

.footer-link {
    color: #9aa3b5;
    text-decoration: none;
    display: block;
    margin-bottom: 0.6rem;
    font-size: 0.9rem;
    transition: 0.2s;
}

.footer-link:hover {
    color: var(--accent-light);
}

.text-accent {
    color: var(--accent);
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }

    .section-header {
        font-size: 1.6rem;
    }

    .course-header h4 {
        font-size: 1.1rem;
    }
}