:root {
    --accent: #2f5d8a;
    --bg: #f3f4f6;
    --fg: #1f2933;
    --muted: #6b7280;
    --card: #ffffff;
    --border: #d1d5db;
    --error: #b42318;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111418;
        --fg: #e5e7eb;
        --muted: #9ca3af;
        --card: #1b1f24;
        --border: #374151;
        --error: #f97066;
    }
}

* { box-sizing: border-box; }

.env-stripe { position: fixed; top: 0; left: 0; right: 0; font-size: 12px; font-weight: 600; letter-spacing: .03em; text-align: center; padding: 5px 16px; }
.env-stripe.dev { background: var(--error); color: #fff; }
.env-stripe.other { background: #f59e0b; color: #1f2933; }

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 16px;
    background: var(--bg);
    color: var(--fg);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

.card {
    width: 100%;
    max-width: 380px;
    padding: 32px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

header { text-align: center; margin-bottom: 24px; }
.brand { font-weight: 700; font-size: 1.1rem; color: var(--accent); }
.logo { max-width: 160px; max-height: 64px; }
h1 { font-size: 1.25rem; font-weight: 600; margin: 12px 0 0; }

form { display: grid; gap: 14px; }
label { display: grid; gap: 4px; font-size: .9rem; }
label.check { display: flex; gap: 8px; align-items: center; }

input:not([type=checkbox]) {
    padding: 9px 11px;
    font: inherit;
    color: inherit;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
}
input:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button {
    padding: 10px;
    font: inherit;
    font-weight: 600;
    color: #fff;
    background: var(--accent);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
}
button.secondary { color: var(--accent); background: transparent; border: 1px solid var(--accent); }

a { color: var(--accent); }
.links { display: grid; gap: 6px; text-align: center; font-size: .9rem; margin-top: 16px; }
.muted { color: var(--muted); font-size: .9rem; }
.error { color: var(--error); margin: 0; }
.error ul { margin: 0; padding-left: 18px; }
.key { text-align: center; font-family: ui-monospace, Consolas, monospace; font-size: 1.05rem; letter-spacing: .05em; word-break: break-all; }
/* QR codes need dark on light to scan, whatever the theme: the SVG carries its own white background. */
.qr { width: 200px; margin: 0 auto; padding: 8px; background: #fff; border-radius: 8px; }
.qr svg { display: block; width: 100%; height: auto; }
.codes { font-family: ui-monospace, Consolas, monospace; columns: 2; padding: 0; list-style: none; }