:root { color-scheme: light; }
* { box-sizing: border-box; }
body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 16px;
    background: #f4f3f0;
    color: #0b0b0b;
    font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.card {
    width: 100%;
    max-width: 360px;
    padding: 28px;
    background: #fcfcfb;
    border: 1px solid #e3e2de;
    border-radius: 10px;
}
h1 { margin: 0; font-size: 20px; }
.lead { margin: 4px 0 20px; color: #52514e; }
.error { margin: 0 0 16px; padding: 8px 10px; border-left: 3px solid #b3261e; background: #fdf1ef; color: #7a1a14; }
form { display: grid; gap: 6px; }
label { color: #52514e; font-size: 13px; margin-top: 8px; }
input {
    height: 40px;
    padding: 0 12px;
    border: 1px solid #c9c8c3;
    border-radius: 6px;
    background: #fff;
    font: inherit;
}
input:focus-visible, button:focus-visible { outline: 2px solid #0b0b0b; outline-offset: 1px; }
button {
    height: 42px;
    margin-top: 18px;
    border: 0;
    border-radius: 6px;
    background: #0b0b0b;
    color: #fff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}