/* Data Management Page Styles */
.data-management-section {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.intro-card, .upload-card, .demo-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    padding: 30px;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
}

.intro-card:hover, .upload-card:hover, .demo-card:hover {
    transform: translateY(-5px);
}

.section-title {
    color: #16213e;
    font-weight: 700;
    margin-bottom: 20px;
    border-left: 5px solid #0f3460;
    padding-left: 15px;
}

.intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4a5568;
}

.upload-placeholder {
    border: 2px dashed #cbd5e0;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    background-color: #f7fafc;
    cursor: not-allowed;
    position: relative;
}

.upload-placeholder i {
    font-size: 3rem;
    color: #a0aec0;
    margin-bottom: 15px;
}

.upload-placeholder .badge {
    position: absolute;
    top: 10px;
    right: 10px;
}

.demo-list {
    margin-top: 20px;
}

.demo-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    border-bottom: 1px solid #edf2f7;
}

.demo-item:last-child {
    border-bottom: none;
}

.demo-info h5 {
    margin: 0;
    font-weight: 600;
}

.demo-info p {
    margin: 5px 0 0;
    font-size: 0.9rem;
    color: #718096;
}

.btn-demo {
    background-color: #0f3460;
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 6px;
    transition: background-color 0.3s;
}

.btn-demo:hover {
    background-color: #16213e;
    color: #fff;
}