body {
    background: #c7f5c4;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    background: #ffffff;
    width: 90%;
    max-width: 900px;
    margin: 40px auto;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 0 10px #00000022;
}
input, button {
    width: 95%;
    padding: 10px;
    margin: 6px 0;
    font-size: 16px;
}
button {
    background: #0c5a17;
    color: white;
    border: none;
    border-radius: 8px;
}
button:hover {
    background: #0e7420;
    cursor: pointer;
}
.materias {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.materia {
    background: #0c5a17;
    color: white;
    padding: 15px;
    border-radius: 10px;
    cursor: pointer;
}
.materia:hover {
    background: #0e7420;
}