.courses-header {
    padding: 80px 0 60px;
    text-align: center;
    background-color: var(--secondary-light);
}

.courses-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.course-category {
    margin-bottom: 80px;
    padding: 40px;
    border-radius: 10px;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.course-category h2 {
    color: var(--primary);
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

.course-category-description {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.course-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 1.5rem;
}

.course-card {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.course-card-header {
    padding: 1.2rem;
    background-color: var(--primary);
    color: rgb(255, 255, 255);
}

.course-card-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.course-card-body {
    padding: 1.2rem;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.course-card-body p {
    margin-bottom: 1rem;
    color: #555;
}

.course-btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background-color: var(--secondary);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.2s ease;
    text-align: center;
}

.course-btn:hover {
    background-color: #0052A3; /* Slightly darker blue on hover */
}

/* Fix for AP courses (first category) */
.course-category:first-child .course-card-header {
    background-color: var(--primary);
}

/* Style for IB courses (second category) */
.course-category:nth-child(2) .course-card-header {
    background-color: var(--primary);
}

/* Style for A Level courses (third category) */
.course-category:nth-child(3) .course-card-header {
    background-color: #003d82;
}

.courses-cta {
    text-align: center;
    padding: 60px 0;
    background-color: var(--secondary-light);
}

.key-features {
    background-color: var(--secondary-light);
    padding: 1rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.key-features h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.key-features ul {
    margin-left: 1.5rem;
}

.key-features li {
    margin-bottom: 0.5rem;
}

/* ========================================
   MOBILE RESPONSIVE STYLES
   ======================================== */

/* Tablet and Mobile Styles (768px and below) */
@media (max-width: 768px) {
    .courses-header {
        padding: 40px 0 30px;
    }

    .courses-header h1 {
        font-size: 2rem;
        line-height: 1.3;
    }

    .courses-header p {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .courses-container {
        padding: 0 1rem;
    }

    .course-category {
        padding: 1.5rem;
        margin-bottom: 3rem;
    }

    .course-category h2 {
        font-size: 1.8rem;
        margin-bottom: 1rem;
    }

    .course-category-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .course-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .course-card-body {
        min-height: auto;
    }

    .course-btn {
        padding: 0.8rem 1.5rem;
        min-height: 44px;
        width: 100%;
    }

    .key-features {
        padding: 1rem;
        margin: 1.5rem 0;
    }

    .key-features h3 {
        font-size: 1.1rem;
    }

    .key-features ul {
        margin-left: 1rem;
        font-size: 0.95rem;
    }

    .courses-cta {
        padding: 40px 0;
    }

    .courses-cta h2 {
        font-size: 1.8rem;
        padding: 0 1rem;
    }

    .courses-cta p {
        font-size: 1rem;
        padding: 0 1rem;
    }
}

/* Small Mobile Styles (480px and below) */
@media (max-width: 480px) {
    .courses-header {
        padding: 30px 0 20px;
    }

    .courses-header h1 {
        font-size: 1.6rem;
    }

    .course-category {
        padding: 1.2rem;
        margin-bottom: 2rem;
        border-radius: 8px;
    }

    .course-category h2 {
        font-size: 1.5rem;
    }

    .course-category-description {
        font-size: 0.95rem;
    }

    .course-card-header {
        padding: 1rem;
    }

    .course-card-header h3 {
        font-size: 1.1rem;
    }

    .course-card-body {
        padding: 1rem;
    }

    .key-features ul {
        font-size: 0.9rem;
    }
}

/* Extra Small Mobile Styles (360px and below) */
@media (max-width: 360px) {
    .courses-header h1 {
        font-size: 1.4rem;
    }

    .course-category {
        padding: 1rem;
    }

    .course-category h2 {
        font-size: 1.3rem;
    }
}