body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
}

.container {
    width: 90%;
    max-width: 700px;
    margin: 40px auto;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
}

input, button {
    width: 100%;
    padding: 10px;
    margin: 5px 0 15px 0;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
}

.error {
    color: red;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}

.pendiente { color: orange; font-weight: bold; }
.parcial { color: blue; font-weight: bold; }
.revisado { color: green; font-weight: bold; }