body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    margin-top: 40px;
    border-radius: 8px;
}
h1 {
    text-align: center;
}
label {
    display: block;
    margin-top: 10px;
}
input, select, textarea {
    width: 100%;
    padding: 8px;
    margin-top: 4px;
}
button {
    margin-top: 15px;
    padding: 10px 20px;
}
.logo {
    display: block;
    margin: auto;
    width: 150px;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}
.pendiente {
    background-color: #ffdddd;
}
.cerrado {
    background-color: #ddffdd;
}