/* Estilos básicos */
body {
    font-family: 'Arial', sans-serif;
    background-color: #f8f8f8;
    margin: 0;
    padding: 0;
}
h1 {
    text-align: center;
    color: #333;
    margin-top: 30px;
}
.container {
    width: 80%;
    max-width: 1100px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table th, table td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}
table th {
    background-color: #4CAF50;
    color: white;
}
input, select, button {
    padding: 8px;
    margin: 5px 0;
    width: 100%;
    box-sizing: border-box;
    font-size: 16px;
}
button {
    background-color: #4CAF50;
    color: white;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 12px 24px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}
button:hover {
    background-color: #45a049;
}
button:active {
    background-color: #388e3c;
}
.result {
    margin-top: 20px;
    font-size: 18px;
}
.result p {
    font-weight: bold;
    margin: 5px 0;
}
.result span {
    font-weight: normal;
}
.tabla-rentabilidad {
    margin-top: 30px;
}
.tabla-rentabilidad th, .tabla-rentabilidad td {
    padding: 12px;
    text-align: center;
}
.tabla-rentabilidad th {
    background-color: #1e90ff;
    color: white;
}
.tabla-rentabilidad td {
    background-color: #f1f1f1;
}
.btn-container {
    display: flex;
    justify-content: space-between;
}
.btn-container button {
    width: 48%;
}