.wp-diesel-tool-container {
    max-width: 600px;
    margin: 20px auto;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 15px;
    color: #333;
}

.diesel-header { text-align: center; margin-bottom: 20px; }
.diesel-header h2 { color: #1565c0; margin: 0; }

.wp-global-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    background: #fff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    align-items: flex-end;
}

.wp-input-group { display: flex; flex-direction: column; margin-bottom: 10px; }
.wp-input-group label { font-size: 13px; font-weight: bold; margin-bottom: 5px; min-height: 35px; display: flex; align-items: center; }
.wp-input-group input { 
    padding: 10px; 
    border: 1px solid #ddd; 
    border-radius: 5px; 
    text-align: center;
    font-size: 16px;
}

.wp-comparison-card {
    background: #fff;
    border-top: 5px solid #1565c0;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    overflow: hidden;
}

.wp-card-header { background: #f1f1f1; padding: 10px; font-weight: bold; text-align: center; color: #1565c0; }
.wp-card-body { padding: 20px; }

.wp-stat-box {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    border-radius: 8px;
    margin-top: 10px;
    font-weight: bold;
}

.wp-global-box { background: #e3f2fd; color: #1976d2; }
.wp-diff-box { background: #f5f5f5; color: #333; border: 1px dashed #1565c0; }

.wp-info-footer { font-size: 12px; text-align: center; margin-top: 15px; color: #777; }

@media (max-width: 480px) {
    .wp-global-inputs { grid-template-columns: 1fr; }
    .wp-input-group label { min-height: auto; }
}