.gst-calculator-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    font-family: Arial, sans-serif;
}

.gst-calculator-container h3 {
    margin-top: 0;
    color: #2c3e50;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.gst-calculator-container h3 i {
    margin-right: 10px;
    color: #3498db;
}

.gst-input-group {
    margin-bottom: 15px;
}

.gst-input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.gst-input-group label i {
    margin-right: 8px;
    width: 20px;
    color: #3498db;
}

.gst-input-group input[type="number"],
.gst-input-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box;
}

.gst-input-group input[type="number"]:focus,
.gst-input-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.3);
}

.gst-buttons {
    display: flex;
    gap: 10px;
    margin: 20px 0;
}

.gst-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gst-btn i {
    margin-right: 8px;
}

.gst-btn.calculate {
    background-color: #3498db;
    color: white;
}

.gst-btn.calculate:hover {
    background-color: #2980b9;
}

.gst-btn.reset {
    background-color: #e74c3c;
    color: white;
}

.gst-btn.reset:hover {
    background-color: #c0392b;
}

.gst-results {
    margin-top: 20px;
    padding: 15px;
    background-color: #fff;
    border-radius: 4px;
    border: 1px solid #eee;
}

.gst-results h4 {
    margin-top: 0;
    color: #2c3e50;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.gst-results h4 i {
    margin-right: 10px;
    color: #27ae60;
}

.gst-result-item {
    display: flex;
    justify-content: space-between;
    margin: 10px 0;
    padding: 8px 0;
    border-bottom: 1px dashed #eee;
}

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

.gst-result-item span:first-child {
    font-weight: bold;
    color: #555;
}

.gst-result-item span:last-child {
    font-weight: bold;
    color: #27ae60;
}