/* Dataset-specific styles */

.dataset-section {
    background: #fff;
    padding: 2.5rem;
    margin-bottom: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.dataset-card {
    border: none;
    border-radius: 12px;
    padding: 2rem;
    height: 100%;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.dataset-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.dataset-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
}

.development-set {
    border-top: 5px solid #28a745;
    background: linear-gradient(135deg, #f8fff9 0%, #e8f5e9 100%);
}

.validation-set {
    border-top: 5px solid #ffc107;
    background: linear-gradient(135deg, #fffdf8 0%, #fff3cd 100%);
}

.test-set {
    border-top: 5px solid #dc3545;
    background: linear-gradient(135deg, #fff8f8 0%, #f8d7da 100%);
}

.dataset-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: white;
}

.development-set .dataset-icon {
    background: linear-gradient(135deg, #28a745, #20c997);
}

.validation-set .dataset-icon {
    background: linear-gradient(135deg, #ffc107, #fd7e14);
}

.test-set .dataset-icon {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

.dataset-card h4 {
    color: #333;
    font-weight: 700;
    text-align: center;
    margin-bottom: 5px;
}

.dataset-subtitle {
    color: #666;
    font-weight: 600;
    text-align: center;
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dataset-content {
    margin-bottom: 20px;
}

.dataset-content ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.dataset-content li {
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: #555;
}

.dataset-footer {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.info-card {
    background: #f8f9fa;
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    height: 100%;
}

.info-card h5 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.dataset-features {
    list-style: none;
    padding-left: 0;
}

.dataset-features li {
    padding: 8px 0;
    padding-left: 30px;
    position: relative;
}

.dataset-features li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.section-title {
    position: relative;
    padding-bottom: 15px;
    margin-bottom: 30px;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .dataset-section {
        padding: 2rem;
    }
    
    .dataset-card {
        padding: 1.5rem;
    }
    
    .dataset-icon {
        width: 60px;
        height: 60px;
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .dataset-section {
        padding: 1.5rem;
    }
    
    .dataset-card {
        margin-bottom: 1.5rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
        margin-bottom: 10px;
    }
}

@media (max-width: 576px) {
    .dataset-card {
        padding: 1.25rem;
    }
    
    .dataset-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .dataset-card h4 {
        font-size: 1.25rem;
    }
    
    .dataset-subtitle {
        font-size: 0.8rem;
    }
}