:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --text: #1c1917;
  --muted: #78716c;
  --line: #e7e5e4;
  --accent: #4f46e5;
  --on-accent: #ffffff;
  --error: #b91c1c;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --surface: #1c1917;
    --text: #f5f5f4;
    --muted: #a8a29e;
    --line: #292524;
    --accent: #a5b4fc;
    --on-accent: #0c0a09;
    --error: #fca5a5;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 680px; margin: 0 auto; padding: 12vh 16px 64px; }

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 { margin: 4px 0 40px; font-size: 34px; font-weight: 650; letter-spacing: -.02em; }

.row { display: flex; gap: 8px; }

input, button {
  font: inherit;
  border-radius: 10px;
  padding: 10px 14px;
}

input {
  min-width: 0;
  flex: 1;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--line);
}

input:focus-visible, button:focus-visible, .guides a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 550;
  cursor: pointer;
}

button.ghost { background: transparent; color: var(--muted); border-color: var(--line); }
button.ghost:hover { color: var(--text); }

.lock label { display: block; margin-bottom: 10px; color: var(--muted); }
.lock .row { max-width: 400px; }
#pin { letter-spacing: .35em; font-variant-numeric: tabular-nums; }

.error { margin: 10px 0 0; color: var(--error); font-size: 14px; }
.muted { color: var(--muted); }

.shake { animation: shake .35s; }
@keyframes shake {
  25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-3px); }
}

#menu > .row { margin-bottom: 16px; }

.guides { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }

.guides a {
  display: block;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}

.guides .title { font-size: 17px; font-weight: 600; }
.guides a:hover .title { color: var(--accent); }
.guides .summary { margin-top: 2px; color: var(--muted); }

.guides .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--muted);
}

.guides .tag { padding: 1px 9px; border: 1px solid var(--line); border-radius: 999px; }

@media (prefers-reduced-motion: reduce) { .shake { animation: none; } }