body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

.tab-navigation {
    display: flex;
    margin-bottom: 20px;
}

.tab-button {
    flex: 1;
    padding: 10px;
    background-color: #e9ecef;
    border: none;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.tab-button.active {
    background-color: #007bff;
    color: white;
}

.tab-button:hover:not(.active) {
    background-color: #d0d0d0;
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}

.results {
    margin-top: 20px;
    padding: 15px;
    background-color: #e9ecef;
    border-radius: 5px;
}

.results h2 {
    margin-top: 0;
    color: #333;
}

.results p {
    margin: 10px 0;
    font-size: 18px;
}

.calculator-section {
    margin-top: 20px;
}