body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin-top: 50px;
    background-color: #f9f9f9;
    color: #333;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}

.logo {
    max-width: 300px;
    margin-bottom: 20px;
}

h1 {
    color: #4CAF50;
}

.container {
    width: 80%;
    margin: 0 auto;
}

input[type="text"], textArea {
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-bottom: 10px;
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

textarea {
    height: 250px;
}

input[type="text"].invalid {
    border-color: red;
}

#salida {
    margin: 10px 0;
    font-weight: bold;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    margin: 10px 5px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}

table {
    width: 100%;
    margin: 20px auto;
    border-collapse: collapse;
    display: none;
    overflow-x: auto;
}

th, td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: left;
}

th {
    background-color: #4CAF50;
    color: white;
}

td {
    background-color: #f2f2f2;
}

@media (max-width: 600px) {
    table, thead, tbody, th, td, tr {
        display: block;
    }
    thead tr {
        display: none;
    }
    td {
        border: none;
        position: relative;
        padding-left: 50%;
        text-align: right;
    }
    td:before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        width: 50%;
        padding-left: 10px;
        font-weight: bold;
        text-align: left;
    }
}

.spinner {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-left-color: #ffffff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}