/* Course Marketplace */
.marketplace {
    padding-top: 100px;
}

.marketplace-header {
    margin-bottom: var(--space-8);
}

.marketplace-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-8);
}

/* Filters Sidebar */
.filters-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.filter-section {
    margin-bottom: var(--space-6);
}

.filter-section h5 {
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-500);
    margin-bottom: var(--space-3);
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    cursor: pointer;
}

.filter-option input[type="checkbox"],
.filter-option input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--red);
}

.filter-option label {
    font-size: var(--text-sm);
    color: var(--gray-600);
    cursor: pointer;
}

.filter-price-range {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.filter-price-range input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
}

/* Course Grid */
.course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.course-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.course-card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--navy), #1a3a5c);
    position: relative;
}

.course-card-level {
    position: absolute;
    top: 12px;
    left: 12px;
}

.course-card-type {
    position: absolute;
    top: 12px;
    right: 12px;
}

.course-card-body {
    padding: var(--space-5);
}

.course-card h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-2);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-instructor {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.course-card-instructor img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
}

.course-card-instructor span {
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.course-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-3);
}

.course-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-3);
    border-top: 1px solid var(--gray-200);
}

.course-card-price {
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--navy);
}

/* Sort Bar */
.sort-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    padding: var(--space-3) 0;
}

.sort-bar .results-count {
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.sort-bar select {
    padding: 8px 30px 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
}

/* Search Bar */
.search-bar {
    position: relative;
    margin-bottom: var(--space-6);
}

.search-bar input {
    width: 100%;
    padding: 16px 20px 16px 52px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast);
}

.search-bar input:focus {
    border-color: var(--gold);
}

.search-bar .search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: var(--text-lg);
}

@media (max-width: 1024px) {
    .marketplace-layout {
        grid-template-columns: 1fr;
    }

    .filters-sidebar {
        position: static;
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-4);
    }

    .course-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .course-grid {
        grid-template-columns: 1fr;
    }
}