.wpc-petrol-wrapper {
    max-width: 600px;
    margin: 20px auto;
    background: #ffffff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    color: #333;
}

.wpc-tool-header { text-align: center; margin-bottom: 25px; }
.wpc-tool-header h2 { color: #2e7d32; margin: 0; font-size: 24px; }
.wpc-tool-header p { color: #666; font-size: 14px; margin-top: 5px; }

.wpc-global-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: #fdfdfd;
    padding: 15px;
    border: 1px solid #f0f0f0;
    border-radius: 10px;
    margin-bottom: 20px;
    align-items: flex-end;
}

.wpc-field-group { display: flex; flex-direction: column; margin-bottom: 15px; }

.wpc-field-group label { 
    font-size: 13px; 
    font-weight: 600; 
    margin-bottom: 8px; 
    color: #555;
    min-height: 38px; /* Alignment Fix */
    display: flex;
    align-items: center;
}

.wpc-field-group input { 
    padding: 12px; 
    border: 2px solid #eee; 
    border-radius: 8px; 
    text-align: center;
    font-size: 16px;
    outline: none;
    transition: 0.3s;
}

.wpc-field-group input:focus { border-color: #2e7d32; }

.wpc-result-card {
    border: 1px solid #eee;
    border-top: 6px solid #2e7d32;
    border-radius: 10px;
    overflow: hidden;
}

.wpc-card-title { background: #f9f9f9; padding: 12px; text-align: center; font-weight: bold; color: #2e7d32; border-bottom: 1px solid #eee; }
.wpc-card-content { padding: 20px; }

.wpc-status-box {
    display: flex;
    justify-content: space-between;
    padding: 14px;
    border-radius: 8px;
    margin-top: 12px;
    font-weight: 600;
}

.wpc-bg-blue { background: #e3f2fd; color: #1976d2; }
.wpc-bg-green-light { background: #f1f8e9; color: #2e7d32; border: 1px dashed #2e7d32; }

.wpc-tool-footer { text-align: center; font-size: 12px; color: #888; margin-top: 20px; line-height: 1.5; }

@media (max-width: 500px) {
    .wpc-global-section { grid-template-columns: 1fr; gap: 10px; }
    .wpc-field-group label { min-height: auto; }
}