/* The Lab — only what is lab-specific. Everything else (scene layouts, buttons, cards, pack grid, HUD,
   reactions, modals, result blocks) comes from client/ui/base.css. Two things are new here: the problem
   card with its chips and dials, and the shared scratchpad overlay. */

/* ---------- PACK ---------- */
.lb-pack .pack__grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
.lb-pack .pack-card { min-height: 168px; }
.lb-options { width: min(560px, 100%); gap: 18px; }
.lb-dial { display: flex; flex-direction: column; align-items: center; gap: 8px; width: 100%; }
.lb-dial__row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; width: 100%; }
.lb-dial__opt {
  flex: 1 1 150px; min-height: 58px; padding: 8px 14px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  border-radius: var(--r8); border: 1px solid var(--line); background: var(--paper-raised);
  transition: border-color .12s, box-shadow .12s;
}
.lb-dial__opt:hover { border-color: var(--ink-faint); }
.lb-dial__opt[aria-pressed="true"] { border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink) inset; }
.lb-dial__opt .t { font-weight: 800; font-size: 15px; }
.lb-dial__opt .s { font: 11px var(--mono); color: var(--ink-soft); letter-spacing: .02em; }
.lb-pack-foot { font: 12px var(--mono); color: var(--ink-faint); letter-spacing: .02em; text-wrap: balance; }

/* ---------- PROBLEM ---------- */
.lb-problem { gap: 16px; }
/* the head carries an eyebrow, two chips and a clock — it has to be allowed to wrap on a phone */
.lb-problem .meta, .lb-solution .meta { flex-wrap: wrap; justify-content: center; row-gap: 6px; }
.lb-dots { display: flex; gap: 6px; }
.lb-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--line); }
.lb-dot.is-done { background: var(--ink-faint); }
.lb-dot.is-now { background: var(--ink); transform: scale(1.25); }
.lb-chip {
  display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--paper-raised);
  font: 700 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-soft);
}
.lb-mode {
  display: inline-flex; align-items: center; padding: 6px 16px; border-radius: 999px;
  border: 1px dashed var(--line);
  font: 700 12px/1.3 var(--mono); letter-spacing: .03em; color: var(--ink-soft);
}
/* No text-wrap: balance here — balancing splits an equation across the line break ("y / = 4x − 1"). */
.lb-text {
  margin: 0; max-width: 56ch; padding: 18px 22px;
  font-size: clamp(18px, 2.6vw, 24px); font-weight: 800; line-height: 1.45; letter-spacing: -.01em;
  background: var(--paper-raised); border: 1px solid var(--line); border-radius: var(--r8);
  box-shadow: var(--shadow-1);
}
.lb-text.is-dim { font-size: 16px; font-weight: 600; color: var(--ink-soft); padding: 12px 18px; box-shadow: none; }
.lb-unit { font: 12px var(--mono); color: var(--ink-faint); letter-spacing: .04em; }
.lb-input { width: min(520px, 100%); text-align: center; font-family: var(--mono); }
.lb-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center; }
.lb-pad-btn { font-size: 15px; }
.lb-status { min-height: 20px; font-size: 14px; color: var(--ink-soft); }

/* ---------- SOLUTION ---------- */
.lb-solution { gap: 16px; }
.lb-judging { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.lb-answers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; width: 100%; }
.lb-answers--coop { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
.lb-answer {
  text-align: left; padding: 14px 16px; border-radius: var(--r8);
  border: 1px solid var(--line); background: var(--paper-raised);
  display: flex; flex-direction: column; gap: 6px;
}
.lb-answer--pink { border-color: var(--pink); }
.lb-answer--blue { border-color: var(--blue); }
/* the team card is both of you at once */
.lb-answer--team { border-color: var(--line); border-left: 4px solid var(--pink); border-right: 4px solid var(--blue); }
.lb-answer__head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.lb-answer__name { font: 700 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.lb-answer__v { font-size: 18px; font-weight: 700; font-family: var(--mono); word-break: break-word; }
.lb-verdict { display: inline-flex; align-items: center; height: 26px; padding: 0 10px; border-radius: 999px; font: 800 12px var(--mono); flex: none; }
.lb-verdict.is-correct { background: var(--green-tint); color: var(--on-green-tint); }
.lb-verdict.is-close { background: var(--yellow-tint); color: var(--on-yellow-tint); }
.lb-verdict.is-wrong { background: var(--red-tint); color: var(--on-red-tint); }
.lb-truth {
  width: min(560px, 100%); padding: 20px; border-radius: var(--r8);
  border: 2px solid var(--ink); background: var(--paper-raised);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.lb-truth__tag { display: inline-flex; align-items: center; height: 22px; padding: 0 10px; border-radius: 999px; background: var(--ink); color: var(--on-ink); font: 700 11px var(--mono); letter-spacing: .12em; }
.lb-truth__a { font-size: 26px; font-weight: 800; font-family: var(--mono); letter-spacing: -.01em; word-break: break-word; }
.lb-truth__sol { font-size: 14px; color: var(--ink-soft); line-height: 1.5; text-wrap: balance; }
.lb-totals { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.lb-total {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  min-width: 116px; padding: 10px 16px; border-radius: var(--r8); border: 1px solid var(--line); background: var(--paper-raised);
}
.lb-total .who { font: 700 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.lb-total .n { font: 800 24px/1 var(--mono); }
.lb-total .sub { font: 11px var(--mono); color: var(--ink-faint); }
.lb-total.pink { border-color: var(--pink); }
.lb-total.blue { border-color: var(--blue); }
.lb-total.team { border-left: 4px solid var(--pink); border-right: 4px solid var(--blue); }

/* ---------- RESULT ---------- */
.lb-result-emoji { font-size: 52px; line-height: 1; }
.lb-crown { font-size: clamp(32px, 6vw, 52px); font-weight: 800; letter-spacing: -.02em; line-height: 1.05; }
.lb-crown.pink { color: var(--pink); }
.lb-crown.blue { color: var(--blue); }
.lb-band { font-size: 18px; font-weight: 700; color: var(--ink-soft); text-wrap: balance; }
.lb-score-rows { width: min(460px, 100%); display: flex; flex-direction: column; gap: 8px; }
.lb-score-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px; border-radius: var(--r8); border: 1px solid var(--line); background: var(--paper-raised);
}
.lb-score-row.pink { border-color: var(--pink); }
.lb-score-row.blue { border-color: var(--blue); }
.lb-score-row.team { border-left: 4px solid var(--pink); border-right: 4px solid var(--blue); }
.lb-score-row .who { font-weight: 800; }
.lb-score-row .pts { font-size: 15px; }
.lb-rounds .r { align-items: center; }
.lb-rounds__art { flex: none; width: 26px; font-size: 16px; }
.lb-rounds .t { flex: 1; color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-rounds__marks { display: flex; gap: 6px; flex: none; }
.lb-mark {
  width: 24px; height: 24px; border-radius: var(--r4); display: grid; place-items: center;
  font: 700 13px var(--mono); border: 1px solid var(--line); background: var(--paper-raised);
}
.lb-mark.correct { border-color: var(--green); color: var(--green); }
.lb-mark.close { border-color: var(--yellow); color: var(--on-yellow-tint); }
.lb-mark.wrong { color: var(--ink-faint); }

/* ---------- the shared scratchpad ---------- */
.lb-pad {
  position: fixed; left: 0; right: 0; bottom: 0;
  height: min(58vh, 480px);
  z-index: 55;
  display: flex; flex-direction: column;
  /* squared paper, drawn in CSS so there is no image to load */
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 28px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 28px 100%,
    var(--paper-raised);
  border-top: 2px solid var(--ink);
  box-shadow: 0 -12px 40px rgba(23, 24, 28, .16);
  animation: padUp .22s cubic-bezier(.2, 1, .4, 1) both;
}
@keyframes padUp { from { transform: translateY(100%); } }
.lb-pad__bar {
  display: flex; align-items: center; gap: 8px; padding: 8px 14px;
  background: var(--paper); border-bottom: 1px solid var(--line);
}
.lb-pad__title { font: 700 12px var(--mono); letter-spacing: .06em; color: var(--ink-soft); margin-right: auto; }
.lb-pad__wipe, .lb-pad__close { min-height: 34px; padding: 0 14px; font-size: 13px; font-family: var(--mono); }
.lb-pad__paper {
  flex: 1; width: 100%; height: 100%;
  touch-action: none; /* the pad IS the gesture surface — no scroll fights */
  cursor: crosshair;
}

@media (max-width: 560px) {
  .lb-pad { height: 52vh; }
  .lb-answers { grid-template-columns: 1fr; }
  .lb-dial__opt { flex: 1 1 100%; }
  .lb-problem .meta, .lb-solution .meta { gap: 8px; font-size: 12px; }
  .lb-chip { height: 22px; padding: 0 8px; font-size: 10px; }
  .lb-mode { font-size: 11px; padding: 5px 12px; }
  .lb-input { font-size: 16px; }
}