:root { color-scheme: dark; }

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font: 15px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: #0f1524;
    color: #e6e9f2;
    display: grid;
    place-items: center;
    padding: 24px;
}

form {
    width: 100%;
    max-width: 420px;
    background: #19223a;
    border: 1px solid #26314f;
    border-radius: 12px;
    padding: 28px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
}

h1 {
    margin: 0 0 18px;
    font-size: 20px;
    letter-spacing: .3px;
}

label {
    display: block;
    margin-top: 14px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .6px;
    color: #9aa4bf;
}

input,
select {
    width: 100%;
    margin-top: 6px;
    padding: 10px 12px;
    background: #0f1524;
    border: 1px solid #2a3654;
    border-radius: 8px;
    color: #e6e9f2;
    font: inherit;
}

input:focus,
select:focus {
    outline: none;
    border-color: #5b7cfa;
}

button {
    margin-top: 22px;
    width: 100%;
    padding: 12px;
    background: #5b7cfa;
    border: 0;
    border-radius: 8px;
    color: #fff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

button:hover { background: #4b6bea; }

.hint {
    margin: 12px 0 0;
    font-size: 12px;
    color: #7a8299;
    text-align: center;
}