:root {
    --bg0: #141414;
    --bg1: #1e1e1e;
    --bg2: #2a2a2a;
    --text: #f2f2f2;
    --muted: #a8a8a8;
    --accent: #f0c14b;
    --danger: #ff6b6b;
    --ok: #7dcea0;
    --line: rgba(255, 255, 255, 0.08);
    --radius: 14px;
    font-family: "IBM Plex Mono", ui-monospace, "Cascadia Mono", "Segoe UI Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100svh;
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(240, 193, 75, 0.12), transparent 55%),
        radial-gradient(900px 500px at 100% 0%, rgba(125, 206, 160, 0.08), transparent 50%),
        linear-gradient(160deg, #101010, #1a1a1a 45%, #121212);
}

.shell {
    min-height: 100svh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.panel {
    width: min(420px, 100%);
    background: color-mix(in srgb, var(--bg1) 92%, transparent);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.6rem 1.5rem 1.4rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.brand {
    margin: 0 0 0.35rem;
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--accent);
}

h1 {
    margin: 0 0 0.35rem;
    font-size: 1.25rem;
    font-weight: 600;
}

h2 {
    margin: 1.4rem 0 0.65rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--muted);
}

.lede {
    margin: 0 0 1.2rem;
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.45;
}

form {
    display: grid;
    gap: 0.85rem;
}

label {
    display: grid;
    gap: 0.35rem;
    font-size: 0.82rem;
    color: var(--muted);
}

input {
    width: 100%;
    border: 1px solid var(--line);
    background: var(--bg0);
    color: var(--text);
    border-radius: 10px;
    padding: 0.75rem 0.85rem;
    font: inherit;
}

input:focus {
    outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
    border-color: transparent;
}

button, .link-btn {
    appearance: none;
    border: 0;
    border-radius: 10px;
    padding: 0.8rem 1rem;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
}

.primary {
    background: var(--accent);
    color: #1a1400;
}
.link-btn {
    display: block;
    margin-bottom: 0.65rem;
}
.secondary {
    width: 100%;
    background: var(--bg2);
    color: var(--text);
    border: 1px solid var(--line);
}

.ghost {
    width: 100%;
    margin-top: 1rem;
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--line);
}

.divider {
    display: grid;
    place-items: center;
    margin: 1rem 0;
    color: var(--muted);
    font-size: 0.8rem;
}

.divider::before,
.divider::after {
    content: "";
    display: block;
    height: 1px;
    background: var(--line);
    width: 100%;
    grid-row: 1;
}

.divider span {
    grid-row: 1;
    padding: 0 0.7rem;
    background: var(--bg1);
}

.message {
    margin: 0.9rem 0 0;
    font-size: 0.88rem;
    line-height: 1.4;
}

.message.error { color: var(--danger); }
.message.ok { color: var(--ok); }

.passkey-list {
    list-style: none;
    margin: 0 0 0.75rem;
    padding: 0;
    display: grid;
    gap: 0.5rem;
}

.passkey-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.65rem 0.75rem;
    border-radius: 10px;
    background: var(--bg0);
    border: 1px solid var(--line);
    font-size: 0.88rem;
}

.passkey-list button {
    padding: 0.35rem 0.55rem;
    font-size: 0.78rem;
    background: transparent;
    color: var(--danger);
    border: 1px solid color-mix(in srgb, var(--danger) 40%, transparent);
    border-radius: 8px;
}

.empty {
    color: var(--muted);
    font-size: 0.85rem;
    margin: 0 0 0.75rem;
}