:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
    margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center;
    font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: #0b3d64; color: #1b1b1b;
}
.card {
    width: 360px; max-width: 92vw; background: #fff; border-radius: 8px;
    padding: 32px 28px; box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
.logo { font-weight: 700; font-size: 20px; color: #0b3d64; margin-bottom: 18px; }
h1 { font-size: 18px; margin: 0 0 18px; font-weight: 600; }
label { display: block; font-size: 13px; color: #444; margin-bottom: 14px; }
input {
    width: 100%; margin-top: 6px; padding: 10px 12px; font-size: 15px;
    border: 1px solid #c4c4c4; border-radius: 4px;
}
button {
    width: 100%; margin-top: 6px; padding: 11px; font-size: 15px; font-weight: 600;
    color: #fff; background: #0b6bcb; border: 0; border-radius: 4px; cursor: pointer;
}
button:hover { background: #095aa8; }
.error { background: #fde8e8; color: #a12622; padding: 10px 12px; border-radius: 4px; font-size: 13px; }
.hint { color: #777; font-size: 12px; margin-top: 16px; }