/* Auth pages: the centered login / setup card. */
.auth-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    max-width: 380px;
    margin: 3rem auto;
}
.auth-card h1 { margin: 0 0 .25rem; }
.auth-card .form { margin-top: 1.25rem; }
.auth-card .form button[type="submit"] { align-self: stretch; text-align: center; }