:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --bg2: var(--tg-theme-secondary-bg-color, #f2f2f5);
  --text: var(--tg-theme-text-color, #111111);
  --hint: var(--tg-theme-hint-color, #8a8a8e);
  --link: var(--tg-theme-link-color, #2481cc);
  --btn: var(--tg-theme-button-color, #2481cc);
  --btn-text: var(--tg-theme-button-text-color, #ffffff);
  --danger: #e5484d;
  --ok: #2fa84f;
  --warn: #d98a00;
  --radius: 12px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; background: var(--bg2); color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
#app { max-width: 640px; margin: 0 auto; padding: 14px 14px 90px; }
h1 { font-size: 20px; margin: 4px 0 12px; font-weight: 600; }
h2 { font-size: 16px; margin: 18px 0 8px; font-weight: 600; }
.muted { color: var(--hint); }
.small { font-size: 13px; }
.center { text-align: center; padding: 40px 0; }
.card { background: var(--bg); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; }
.item { background: var(--bg); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 8px;
  display: flex; align-items: center; gap: 10px; cursor: pointer; }
.item .grow { flex: 1; min-width: 0; }
.ell { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
h1.ell, h2.ell { display: block; }
.ttoggle { cursor: pointer; font-weight: 600; }
.ttoggle:not(.ell) { white-space: normal; overflow: visible; word-break: break-word; }  /* развёрнуто — в несколько строк */
.openbtn { flex: none; border: 0; border-radius: 8px; padding: 7px 16px; font-size: 14px;
  font-weight: 600; background: var(--btn); color: var(--btn-text); cursor: pointer; white-space: nowrap; }
.item .ico { font-size: 20px; width: 26px; text-align: center; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.btn { display: block; width: 100%; border: 0; border-radius: 10px; padding: 13px; font-size: 15px;
  font-weight: 600; background: var(--btn); color: var(--btn-text); cursor: pointer; margin-top: 10px; }
.btn.secondary { background: var(--bg); color: var(--link); border: 1px solid var(--bg2); }
.btn.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn:disabled { opacity: .5; }
.link { color: var(--link); cursor: pointer; background: none; border: 0; font-size: 14px; padding: 4px 0; }
input, select, textarea { width: 100%; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--bg2);
  background: var(--bg); color: var(--text); font-size: 15px; margin-top: 4px; font-family: inherit; }
textarea { min-height: 70px; resize: vertical; }
label { display: block; margin-top: 12px; font-size: 13px; color: var(--hint); }
.check { display: flex; gap: 8px; align-items: center; margin-top: 12px; color: var(--text); font-size: 14px; }
.check input { width: auto; margin: 0; }
.code-input { font-size: 30px; letter-spacing: 10px; text-align: center; font-weight: 600; }
.big-code { font-size: 42px; letter-spacing: 6px; font-weight: 700; text-align: center; color: var(--link); margin: 4px 0; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 10px 0; }
.stat { background: var(--bg); border-radius: 10px; padding: 10px; }
.stat b { display: block; font-size: 20px; }
.bar { height: 5px; background: var(--bg2); border-radius: 3px; overflow: hidden; margin-top: 6px; }
.bar span { display: block; height: 100%; background: var(--btn); }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 8px; background: var(--bg2); white-space: nowrap; }
.badge.ok { background: rgba(47,168,79,.15); color: var(--ok); }
.badge.warn { background: rgba(217,138,0,.15); color: var(--warn); }
.badge.danger { background: rgba(229,72,77,.15); color: var(--danger); }
.badge.pro { background: rgba(36,129,204,.15); color: var(--link); }
.banner { background: rgba(47,168,79,.12); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 12px; cursor: pointer; }
.warnbox { background: rgba(217,138,0,.13); color: var(--warn); border-radius: 10px; padding: 9px 12px; margin: 8px 0; font-size: 14px; }
.errbox { background: rgba(229,72,77,.1); border-radius: 10px; padding: 10px 12px; margin: 8px 0; font-size: 14px; }
.option { background: var(--bg); border: 2px solid transparent; border-radius: 12px; padding: 13px 14px; margin-bottom: 8px; cursor: pointer; }
.option.selected { border-color: var(--btn); }
.option.correct { border-color: var(--ok); background: rgba(47,168,79,.14); }
.option.wrong { border-color: var(--danger); background: rgba(229,72,77,.12); }
.fbbox { margin-top: 10px; padding: 10px 12px; border-radius: 10px; font-weight: 600; text-align: center; }
.fbbox.ok { color: var(--ok); background: rgba(47,168,79,.14); }
.fbbox.no { color: var(--danger); background: rgba(229,72,77,.12); }
.question { font-size: 17px; font-weight: 600; margin: 14px 0; white-space: pre-wrap; }
.timer { font-variant-numeric: tabular-nums; font-weight: 600; }
.timer.low { color: var(--danger); }
.result-big { font-size: 46px; font-weight: 700; text-align: center; margin: 10px 0 0; }
.qedit .opt { display: flex; gap: 8px; align-items: center; margin-top: 6px; }
.qedit .opt input[type=radio] { width: auto; margin: 0; }
.right { color: var(--ok); }
.wrong { color: var(--danger); }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: rgba(0,0,0,.82); color: #fff;
  padding: 10px 16px; border-radius: 10px; font-size: 14px; max-width: 90%; z-index: 10; }
.hidden { display: none; }
.guard { position: fixed; inset: 0; z-index: 9999; background: var(--bg); color: var(--text);
  display: none; align-items: center; justify-content: center; text-align: center; padding: 28px; }
.guard h2 { margin: 10px 0; font-size: 20px; }
.guard p { color: var(--hint); max-width: 440px; margin: 0 auto; }
.tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.tabs button { flex: 1; border: 0; padding: 8px; border-radius: 9px; background: var(--bg); color: var(--text); font-size: 14px; }
.tabs button.on { background: var(--btn); color: var(--btn-text); }
.actbar { position: sticky; top: 0; z-index: 5; background: #d98a00; color: #fff; padding: 9px 14px;
  display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 14px; }
.actbar button { background: rgba(255,255,255,.22); color: #fff; border: 0; border-radius: 8px; padding: 6px 10px; font-size: 13px; font-weight: 600; }
.search { margin-bottom: 10px; }
.kv { display: flex; justify-content: space-between; padding: 4px 0; font-size: 14px; }
.kv span:first-child { color: var(--hint); }
.actbar.hidden { display: none; }
.credit { width: 100%; margin: 0 auto; padding: 10px 14px 30px; text-align: center;
  color: var(--hint); font-size: 13px; }
.credit a { color: var(--link); text-decoration: none; font-weight: 600; }
.credit a:active { opacity: .7; }