:root {
  --bg: var(--tg-theme-bg-color, #17212b);
  --fg: var(--tg-theme-text-color, #f1f1f1);
  --dim: var(--tg-theme-hint-color, #8b9bad);
  --card: var(--tg-theme-secondary-bg-color, #232e3c);
  --btn: var(--tg-theme-button-color, #5288c1);
  --btn-fg: var(--tg-theme-button-text-color, #ffffff);
  --ok: #3ecf8e;
  --bad: #e05561;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.45 -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  overscroll-behavior: none;
}

body { display: flex; flex-direction: column; padding: 0 14px calc(14px + env(safe-area-inset-bottom)); }

header { padding: 12px 0 4px; }

.bar { display: flex; justify-content: space-between; align-items: baseline; font-size: 14px; }
.dim { color: var(--dim); }
.progress { height: 3px; background: var(--card); border-radius: 2px; margin-top: 8px; overflow: hidden; }
#bar { height: 100%; width: 0; background: var(--btn); transition: width .25s; }

main { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.center { text-align: center; }
.hidden { display: none !important; }

.kanji {
  font-size: clamp(84px, 26vw, 132px);
  line-height: 1.05;
  text-align: center;
  font-weight: 500;
  margin: 4px 0 18px;
  user-select: none;
}
@media (min-width: 420px) { .kanji { font-size: 118px; } }

.opts { display: flex; flex-direction: column; gap: 9px; }

.meta { color: var(--dim); font-size: 13px; text-align: center; margin-bottom: 2px; }

.opt {
  display: block;
  width: 100%;
  padding: 15px 16px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: var(--card);
  color: var(--fg);
  font-size: 16px;
  text-align: left;
  font-family: inherit;
}
.opt:active { filter: brightness(1.15); }
.opt.ok  { border-color: var(--ok);  color: var(--ok);  font-weight: 600; }
.opt.bad { border-color: var(--bad); color: var(--bad); opacity: .85; }

.btn {
  width: 100%;
  padding: 15px 16px;
  border: 0;
  border-radius: 12px;
  font-size: 16px;
  font-family: inherit;
  font-weight: 600;
}
.btn.primary { background: var(--btn); color: var(--btn-fg); margin-top: 14px; }
.btn.ghost { background: transparent; color: var(--dim); margin-top: 12px; border: 1px solid var(--card); }
.btn:active { filter: brightness(1.12); }

.verdict { font-size: 19px; font-weight: 600; margin: 6px 0 2px; }
.verdict.ok { color: var(--ok); }
.verdict.bad { color: var(--bad); }
.hint { color: var(--fg); background: var(--card); border-radius: 12px; padding: 12px 14px; margin-top: 12px; font-size: 15px; }
.hint .sub { color: var(--dim); font-size: 13px; margin-top: 6px; }

.sum { text-align: center; }
.sum h2 { font-size: 22px; margin: 0 0 10px; }
.sum .big { font-size: 34px; font-weight: 700; }
.sum table { width: 100%; margin: 16px 0; border-collapse: collapse; font-size: 15px; }
.sum td { padding: 7px 0; border-bottom: 1px solid var(--card); }
.sum td:last-child { text-align: right; color: var(--dim); }