.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding-top: 70px;
}

.hero-section h1 {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.course-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    border-radius: 15px;
    overflow: hidden;
}
.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}
footer {
    background-color: #2c3e50;
    color: white;
    padding: 40px 0;
    margin-top: 50px;
}
.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    border-radius: 25px;
    padding: 10px 25px;
}
.btn-primary:hover {
    background: linear-gradient(45deg, #5a6fd8, #6a4190);
    transform: translateY(-2px);
}
.price-badge {
    background: linear-gradient(45deg, #28a745, #20c997);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: bold;
}

/** Show Course **/
.detail-course {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.detail-course h2 {
    color: #2c3e50;
}

.detail-course img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}