.lbc-calculator-container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    margin: 30px auto;
    font-family: 'Inter', sans-serif;
    color: #333;
    border: 1px solid #e0e0e0;
}

.lbc-calculator-container h2 {
    text-align: center;
    color: #0056b3;
    margin-bottom: 25px;
    font-size: 1.8em;
    font-weight: 700;
}

.lbc-rate-form .form-group {
    margin-bottom: 20px;
}

.lbc-rate-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
    font-size: 0.95em;
}

.lbc-rate-form input[type="number"],
.lbc-rate-form select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #d0d0d0;
    border-radius: 8px;
    font-size: 1em;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    -webkit-appearance: none; /* Remove default styling for select */
    -moz-appearance: none;
    appearance: none;
    background-color: #f9f9f9;
}

.lbc-rate-form input[type="number"]:focus,
.lbc-rate-form select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
    outline: none;
}

.lbc-button {
    display: block;
    width: 100%;
    padding: 14px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
}

.lbc-button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.lbc-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 123, 255, 0.3);
}

.lbc-result {
    margin-top: 25px;
    padding: 20px;
    border-radius: 8px;
    background-color: #e6f7ff;
    border: 1px solid #91d5ff;
    text-align: center;
    font-size: 1.1em;
    font-weight: 600;
    color: #0056b3;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.lbc-result.error {
    background-color: #fff0f0;
    border-color: #ffccc7;
    color: #cf1322;
}

.lbc-result p {
    margin: 0;
}

/* Responsive Adjustments */
@media (max-width: 600px) {
    .lbc-calculator-container {
        padding: 20px;
        margin: 20px auto;
        border-radius: 8px;
    }

    .lbc-calculator-container h2 {
        font-size: 1.5em;
        margin-bottom: 20px;
    }

    .lbc-rate-form input[type="number"],
    .lbc-rate-form select,
    .lbc-button {
        padding: 10px 12px;
        font-size: 0.95em;
    }

    .lbc-result {
        padding: 15px;
        font-size: 1em;
    }
}