* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f5f5f5;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
}

.calculator-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

h2 {
    color: #1a4d2e;
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

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

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    font-size: 0.9rem;
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

.checkbox {
    display: flex;
    align-items: center;
}

.checkbox input {
    margin-right: 10px;
}

.checkbox label {
    margin-bottom: 0;
}

button {
    width: 100%;
    background-color: #1a4d2e;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 12px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #133d25;
}

.hidden {
    display: none;
}

#resultado {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

h3 {
    margin-bottom: 15px;
    color: #1a4d2e;
}

.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 15px;
}

.result-grid div:nth-child(even) {
    text-align: right;
    font-weight: bold;
}

.total {
    display: flex;
    justify-content: space-between;
    padding-top: 15px;
    margin-top: 15px;
    border-top: 1px solid #ddd;
    font-weight: bold;
    font-size: 1.1rem;
}

.total div:last-child {
    color: #1a4d2e;
}

.nota {
    margin-top: 15px;
    font-size: 0.8rem;
    font-style: italic;
    color: #777;
}

.contact-btn {
    margin-top: 20px;
    text-align: center;
}

.contact-btn a {
    display: inline-block;
    background-color: #25D366;
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.contact-btn a:hover {
    background-color: #128C7E;
}