:root {
  --bg: #fbf7f4; --card: #ffffff; --ink: #231f20; --muted: #6f6663; --line: #e6dcd6;
  --accent: #c2410c; --accent-ink: #ffffff; --good: #15803d; --bad: #b91c1c; --soft: #fdeee4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171314; --card: #221c1d; --ink: #f5ede9; --muted: #b3a6a1; --line: #3a302f;
    --accent: #fb923c; --accent-ink: #1b1110; --good: #4ade80; --bad: #f87171; --soft: #2d211c;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: env(safe-area-inset-top) 16px calc(24px + env(safe-area-inset-bottom));
}
main { max-width: 560px; margin: 0 auto; padding-top: 20px; }
h1 { font-size: 30px; margin: 4px 0 2px; letter-spacing: -0.5px; }
h2 { font-size: 20px; margin: 0 0 8px; }
p { margin: 6px 0; }
.muted { color: var(--muted); font-size: 15px; }
.center { text-align: center; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px; margin: 14px 0; }
.q { font-size: 22px; line-height: 1.3; font-weight: 650; margin: 8px 0 4px; }
.tag { display: inline-block; font-size: 13px; font-weight: 600; background: var(--soft); color: var(--accent); border-radius: 999px; padding: 3px 10px; }
input, textarea, select {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin: 6px 0;
}
textarea { min-height: 96px; resize: vertical; }
button {
  font: inherit; font-weight: 650; border: 0; border-radius: 12px; padding: 13px 16px;
  background: var(--accent); color: var(--accent-ink); cursor: pointer; width: 100%; margin: 6px 0;
}
button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button.good { background: var(--good); color: #fff; }
button.bad { background: var(--bad); color: #fff; }
button:disabled { opacity: .5; cursor: default; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
.scores { display: flex; gap: 10px; }
.score { flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px; }
.score.me { border-color: var(--accent); }
.score .n { font-size: 26px; font-weight: 700; line-height: 1.1; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--line); margin-right: 6px; }
.dot.on { background: var(--good); }
.reveal { border-left: 4px solid var(--accent); padding: 6px 12px; margin: 10px 0; background: var(--soft); border-radius: 8px; white-space: pre-wrap; overflow-wrap: anywhere; }
.reveal b { display: block; font-size: 13px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.code { font: 700 34px/1 ui-monospace, Menlo, Consolas, monospace; letter-spacing: .15em; margin: 8px 0; }
.banner { text-align: center; font-weight: 700; padding: 10px; border-radius: 12px; margin: 10px 0; }
.banner.good { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }
.banner.bad { background: color-mix(in srgb, var(--bad) 18%, transparent); color: var(--bad); }
.err { color: var(--bad); font-weight: 600; min-height: 1.4em; }