.certificate-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 8px;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    height: 100%;
    background-color: #fff;
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

.certificate-card .card-body {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.certificate-card .card-title {
    font-weight: 600;
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    color: #333;
    line-height: 1.4;
}

.certificate-card .btn {
    border-radius: 6px;
    padding: 0.625rem 1rem;
    font-weight: 500;
    width: 100%;
    text-transform: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.certificate-card .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.category-header {
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #f0f0f0;
    color: #333;
    font-weight: 600;
    font-size: 1.75rem;
}

.certificates-title {
    color: #222;
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.certificates-subtitle {
    color: #666;
    margin-top: 0.5rem;
    font-size: 1.15rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.certificates-container {
    background-color: #f9f9f9;
    padding: 3rem 0;
    border-radius: 0;
}

@media (max-width: 767.98px) {
    .certificates-title {
        font-size: 2rem;
    }
    
    .category-header {
        font-size: 1.5rem;
    }
    
    .certificate-card .card-title {
        font-size: 1.1rem;
    }
}