.courses-hero {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-light);
    padding: 80px 0;
    text-align: center;
}

.courses-hero h1 {
    color: var(--color-light);
}

.course-listing-section {
    padding: 80px 0;
}

.course-grid-layout {
    display: flex;
    gap: 30px;
}

.course-filters {
    flex: 0 0 250px; /* Fixed width for filters */
    background-color: var(--color-light);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 100px; /* Offset from sticky header */
    align-self: flex-start;
}

.filter-group {
    margin-bottom: 20px;
}

.course-filters label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.course-filters select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.course-grid {
    flex-grow: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.course-card {
    background-color: var(--color-light);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.course-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 20px;
}

.card-body h3 {
    font-size: 1.3rem;
    color: var(--color-heading);
}

.details {
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: 10px;
}

/* 📱 Responsiveness */
@media (max-width: 1024px) {
    .course-grid-layout {
        flex-direction: column;
    }
    .course-filters {
        position: static;
        width: 100%;
    }
}