body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #e5e7eb;
    display: flex;
    justify-content: center;
}

.container {
    width: 360px;
    background: #020617;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

h1, h3 {
    text-align: center;
}

.subject {
    margin-bottom: 10px;
}

label {
    display: block;
    font-size: 14px;
}

input {
    width: 100%;
    padding: 6px;
    font-size: 14px;
    margin-top: 4px;
    border-radius: 4px;
    border: none;
}

button {
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    background: #38bdf8;
    border: none;
    font-size: 16px;
    cursor: pointer;
    border-radius: 6px;
}

button:hover {
    background: #0ea5e9;
}

#result {
    text-align: center;
    margin-top: 15px;
}
#gate {
    text-align: center;
    margin-bottom: 15px;
}

#gate input {
    margin-top: 8px;
}