.gst-calculator-container {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    max-width: 500px;
    margin: 0 auto;
    padding: 25px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid #e0e0e0;
}

.gst-calculator-title {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 1.5em;
    font-weight: 600;
}

.gst-calculator-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.gst-calculator-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gst-calculator-input-group label {
    font-weight: 500;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 8px;
}

.gst-calculator-input-group label i {
    color: #3498db;
    font-size: 16px;
}

.gst-calculator-input {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.gst-calculator-input:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.gst-calculator-select {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    background-color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.gst-calculator-select:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.gst-calculator-button {
    padding: 12px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.gst-calculator-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

.gst-calculator-button:active {
    transform: translateY(0);
}

.gst-calculator-results {
    margin-top: 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.gst-calculator-result-box {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.gst-calculator-result-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

.gst-calculator-result-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
}

.gst-calculator-result-icon i {
    color: #3498db;
    font-size: 18px;
}

.gst-calculator-result-content {
    display: flex;
    flex-direction: column;
}

.gst-calculator-result-label {
    font-size: 14px;
    color: #7f8c8d;
}

.gst-calculator-result-value {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
}

.gst-calculator-tax-breakdown {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 10px;
    padding-left: 20px;
    border-left: 3px solid rgba(52, 152, 219, 0.3);
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .gst-calculator-container {
        padding: 20px;
    }
    
    .gst-calculator-title {
        font-size: 1.3em;
    }
}