:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #1c1c1e);
  --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);
  --card: var(--tg-theme-secondary-bg-color, #f2f2f7);
  --danger: #d33a3a;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}
main { padding: 12px 14px; max-width: 640px; margin: 0 auto; }
h1 { font-size: 20px; margin: 4px 0 12px; }
h2 { font-size: 17px; margin: 0 0 4px; }
p { margin: 4px 0; }
.hint { color: var(--hint); font-size: 13px; }
.card { background: var(--card); border-radius: 14px; padding: 12px 14px; margin-bottom: 10px; }
.card.click { cursor: pointer; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.price { font-weight: 600; }
.chip {
  border: 0; border-radius: 999px; padding: 6px 12px; background: var(--card); color: var(--text);
  font: inherit; white-space: nowrap; cursor: pointer;
}
.chip.on { background: var(--btn); color: var(--btn-text); }
.chips { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 4px; }
input, select, textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--card);
  border: 1px solid transparent; border-radius: 10px; padding: 10px 12px; margin: 4px 0 10px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--btn); }
label { font-size: 13px; color: var(--hint); }
button.primary {
  width: 100%; border: 0; border-radius: 12px; padding: 12px; font: inherit; font-weight: 600;
  background: var(--btn); color: var(--btn-text); cursor: pointer;
}
button.primary:disabled { opacity: .5; }
button.link { background: none; border: 0; color: var(--link); font: inherit; padding: 6px 0; cursor: pointer; }
button.danger { color: var(--danger); }
#tabs {
  position: fixed; left: 0; right: 0; bottom: 0; display: flex; background: var(--bg);
  border-top: 1px solid var(--card); padding-bottom: env(safe-area-inset-bottom);
}
#tabs button {
  flex: 1; border: 0; background: none; color: var(--hint); font: inherit; padding: 14px 4px; cursor: pointer;
}
#tabs button.on { color: var(--btn); font-weight: 600; }
#toast {
  position: fixed; left: 50%; bottom: 78px; transform: translate(-50%, 20px); opacity: 0;
  background: #222; color: #fff; padding: 10px 16px; border-radius: 12px; transition: .2s; pointer-events: none;
  max-width: 90%; text-align: center;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }
.error { color: var(--danger); }
.empty { text-align: center; color: var(--hint); padding: 32px 8px; }
.seg { display: flex; gap: 8px; margin: 4px 0 10px; }
.seg label { flex: 1; background: var(--card); border-radius: 10px; padding: 10px; text-align: center; color: var(--text); cursor: pointer; }
.seg input { display: none; }
.seg input:checked + span { font-weight: 600; color: var(--btn); }