.courses-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 50px 30px;
    background: linear-gradient(135deg, #f8f9fa 70%, #e3f0ff 100%);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.09);
    text-align: center;
}

.courses-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: #222;
    letter-spacing: 1px;
}

.courses-subtitle {
    font-size: 1.2rem;
    color: #555;
    margin-bottom: 38px;
}

.courses-row {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.course-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    padding: 38px 24px 28px 24px;
    width: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: box-shadow 0.2s, transform 0.2s;
    position: relative;
}

.course-card:hover {
    box-shadow: 0 12px 32px rgba(0,0,0,0.13);
    transform: scale(1.04);
}

.course-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

.course-icon img {
    width: 40px;
    height: 40px;
}

.card-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: #222;
}

.card-text {
    font-size: 1.05rem;
    color: #444;
    margin-bottom: 22px;
    min-height: 60px;
}

.card-btn {
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1.08rem;
    font-weight: 700;
    text-decoration: none;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    display: inline-block;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

.card-btn-primary {
    background: #007bff;
}

.card-btn-primary:hover {
    background: #0056b3;
}

.card-btn-success {
    background: #28a745;
}

.card-btn-success:hover {
    background: #1e7e34;
}

.card-btn-warning {
    background: #ffc107;
    color: #333;
}

.card-btn-warning:hover {
    background: #e0a800;
    color: #fff;
}


.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: background 0.3s, box-shadow 0.3s;
}

.header.scrolled {
    background: #111;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

main {
    padding-top: 90px; /* Adjust based on header height */
}