/* Pieced Together - a puzzle table: cream board, walnut edges, six piece colours. */
:root {
  --bg: #f3ede1; --card: #fffaf0; --ink: #2b2418; --muted: #6e624c; --line: #d8ccb4; --edge: #8a7a5c;
  --accent: #b9532f; --accent-ink: #fff; --soft: #efe5d2; --warn: #8a5a00; --warn-bg: #fdf1d6; --err: #9b2c1f; --err-bg: #fbe3dd;
  --info-bg: #e6eef6; --info: #2c4f73;
  --g0: #d9663f; --g1: #3f7fb8; --g2: #5b9a4c; --g3: #b8569a; --g4: #c99419; --g5: #3f9895;
  --ok: #2f6b3a; --radius: 14px;
}
:root[data-theme="dark"] {
  --bg: #17140f; --card: #221e17; --ink: #f1eadb; --muted: #b3a68c; --line: #3d3528; --edge: #a8987a;
  --accent: #ef8a63; --accent-ink: #1b140c; --soft: #2c261c; --warn: #f2c66d; --warn-bg: #3a2e14; --err: #f6a493; --err-bg: #3d1f19;
  --info-bg: #1d2a38; --info: #a9c8ea;
  --g0: #ef8a63; --g1: #6fa8dc; --g2: #82c172; --g3: #d888bd; --g4: #e9c25a; --g5: #73c9c5; --ok: #8fd19a;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.hidden { display: none !important; }
.vh { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.small { font-size: 0.88rem; } .muted { color: var(--muted); } .mono { font-family: ui-monospace, Menlo, monospace; }
.bar { display: flex; align-items: center; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--card); position: sticky; top: 0; z-index: 5; }
.back { text-decoration: none; color: var(--muted); font-size: 0.9rem; white-space: nowrap; }
.brand { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; font-family: Georgia, serif; font-size: 1.05rem; }
.brand strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.logo { width: 26px; height: 26px; flex: none; } .lg-piece { fill: var(--accent); stroke: var(--edge); stroke-width: 0.8; }
.session { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.pill { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 999px; padding: 6px 13px; font: inherit; font-size: 0.9rem; cursor: pointer; text-decoration: none; }
.pill:hover:not(:disabled) { border-color: var(--edge); }
.pill.solid { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.pill.ghost { cursor: default; color: var(--muted); }
.pill.tiny { padding: 3px 10px; font-size: 0.8rem; } .pill.big { padding: 10px 20px; font-size: 1rem; font-weight: 600; }
.pill:disabled { opacity: 0.5; cursor: not-allowed; }
main { max-width: 1040px; margin: 0 auto; padding: 18px 16px 40px; }
.hero { padding: 14px 0 6px; }
.kicker { margin: 0 0 6px; color: var(--muted); font-size: 0.88rem; }
h1 { font-family: Georgia, serif; font-size: 2.2rem; line-height: 1.1; margin: 0 0 10px; overflow-wrap: anywhere; }
.h1b { display: block; font-size: 1.15rem; color: var(--muted); font-weight: 400; margin-top: 6px; }
.lede { max-width: 680px; margin: 0 0 12px; }
.samples { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.chip { border: 1px dashed var(--edge); background: transparent; color: var(--ink); border-radius: 8px; padding: 5px 11px; font: inherit; font-size: 0.86rem; cursor: pointer; }
.chip.on { border-style: solid; background: var(--soft); font-weight: 600; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 14px 0; }
.ph { font-family: Georgia, serif; font-size: 1.25rem; margin: 0 0 8px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.step-no { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 6px; background: var(--ink); color: var(--card); font-size: 0.85rem; font-family: system-ui, sans-serif; }
.free { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; background: var(--soft); color: var(--ok); border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; font-family: system-ui, sans-serif; }
.tlab { display: block; font-size: 0.85rem; color: var(--muted); margin: 8px 0 4px; }
.lines { width: 100%; min-height: 190px; resize: vertical; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); padding: 10px; font: 0.92rem/1.5 ui-monospace, Menlo, monospace; }
.lines:focus, .pill:focus-visible, .chip:focus-visible, .pc-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.cardrow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.note { background: var(--warn-bg); color: var(--warn); border-radius: 8px; padding: 6px 10px; }
.puzgrid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 18px; }
.puzwrap svg { width: 100%; height: auto; display: block; }
.puzwrap path.pc { cursor: pointer; pointer-events: all; }
.sub { font-size: 1rem; margin: 4px 0 6px; }
.piecelist { list-style: none; padding: 0; margin: 0 0 12px; max-height: 340px; overflow-y: auto; border: 1px solid var(--line); border-radius: 10px; }
.pc-row { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-bottom: 1px solid var(--line); font-size: 0.86rem; }
.pc-row:last-child { border-bottom: 0; }
.pc-row.out .pc-t { text-decoration: line-through; color: var(--muted); }
.pc-no { flex: none; width: 24px; text-align: right; font-weight: 700; color: var(--muted); }
.pc-t { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.pc-btn { flex: none; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 6px; padding: 2px 8px; font: inherit; font-size: 0.78rem; cursor: pointer; }
.freelist { margin: 0; padding-left: 18px; font-size: 0.9rem; } .freelist li { margin: 3px 0; }
.runrow { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 10px; }
.gate { background: var(--soft); border-radius: 8px; padding: 8px 10px; margin: 10px 0 6px; }
.progress h3 { margin: 0 0 6px; } .steps { list-style: none; padding: 0; margin: 0 0 6px; }
.step { padding: 2px 0; color: var(--muted); } .step.done { color: var(--ok); } .step.active { color: var(--ink); font-weight: 600; }
.step-ic { display: inline-block; width: 14px; font-family: ui-monospace, monospace; }
.raw { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--bg); padding: 10px; border-radius: 8px; font-size: 0.82rem; max-height: 360px; overflow: auto; }
.res-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.res-kick { margin: 0; color: var(--muted); }
.badge { border-radius: 6px; padding: 4px 10px; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.05em; background: var(--soft); color: var(--muted); border: 1px solid var(--line); }
.badge.v-open_book { background: var(--err-bg); color: var(--err); border-color: var(--err); }
.badge.v-half_done { background: var(--warn-bg); color: var(--warn); border-color: var(--warn); }
.badge.v-few_pieces { background: var(--soft); color: var(--ok); border-color: var(--ok); }
.rhead { font-family: Georgia, serif; font-size: 1.3rem; margin: 10px 0 4px; }
.rline { color: var(--muted); margin: 0 0 8px; }
.cards { list-style: none; padding: 0; margin: 8px 0; display: grid; gap: 10px; }
.card { border: 1px solid var(--line); border-left: 6px solid var(--g0); border-radius: 10px; padding: 10px 12px; background: var(--bg); }
.card.g1 { border-left-color: var(--g1); } .card.g2 { border-left-color: var(--g2); } .card.g3 { border-left-color: var(--g3); } .card.g4 { border-left-color: var(--g4); } .card.g5 { border-left-color: var(--g5); }
.chead { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.cno { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 5px; color: #fff; font-size: 0.8rem; font-weight: 700; background: var(--g0); }
.cno.g1 { background: var(--g1); } .cno.g2 { background: var(--g2); } .cno.g3 { background: var(--g3); } .cno.g4 { background: var(--g4); } .cno.g5 { background: var(--g5); }
:root[data-theme="dark"] .cno { color: #1b140c; }
.ctitle { font-weight: 700; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.tag { font-size: 0.74rem; border-radius: 999px; padding: 1px 8px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.tag.t-clear { color: var(--ink); border-color: var(--edge); } .tag.t-sens { color: var(--err); border-color: var(--err); background: var(--err-bg); }
.quotes { margin: 6px 0; padding-left: 18px; font-size: 0.85rem; color: var(--muted); }
.card p { margin: 5px 0; font-size: 0.92rem; } .card p.none, .none { color: var(--muted); font-style: italic; }
.wbox { border: 1px dashed var(--line); border-radius: 10px; padding: 8px 12px; margin: 10px 0; } .wbox h4 { margin: 0 0 4px; font-size: 0.9rem; } .wbox p { margin: 0; font-size: 0.9rem; }
.closing { font-style: italic; }
.recon { padding-left: 0; list-style: none; margin: 4px 0 8px; font-size: 0.88rem; }
.recon li { border-radius: 6px; padding: 5px 9px; margin: 4px 0; background: var(--soft); }
.recon li.warn { background: var(--warn-bg); color: var(--warn); } .recon li.err { background: var(--err-bg); color: var(--err); } .recon li.info { background: var(--info-bg); color: var(--info); }
.exports { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.saved { list-style: none; padding: 0; margin: 10px 0 0; }
.hrow { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-top: 1px solid var(--line); }
.hinfo { flex: 1; min-width: 0; display: flex; flex-direction: column; } .hinfo b { overflow-wrap: anywhere; }
.hdot { width: 12px; height: 12px; border-radius: 3px; background: var(--line); flex: none; }
.hdot.v-open_book { background: var(--err); } .hdot.v-half_done { background: var(--warn); } .hdot.v-few_pieces { background: var(--ok); }
.hbtns { display: flex; gap: 6px; }
.foot { max-width: 1040px; margin: 0 auto; padding: 0 16px 40px; color: var(--muted); font-size: 0.86rem; }
.toasts { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); display: grid; gap: 6px; z-index: 20; width: min(92vw, 460px); }
.toast { background: var(--ink); color: var(--card); padding: 9px 13px; border-radius: 8px; font-size: 0.9rem; transition: opacity 0.5s; }
.toast.err { background: var(--err); color: #fff; } .toast.gone { opacity: 0; }
:root[data-theme="dark"] .toast.err { color: #1b140c; }
@media (max-width: 760px) {
  .puzgrid { grid-template-columns: 1fr; }
  h1 { font-size: 1.75rem; } .back-t { display: none; } .bar { padding: 8px 12px; gap: 8px; }
  .pill { padding: 5px 10px; } .brand { font-size: 0.95rem; }
}
@media print {
  .bar, .samples, .askbox, .histbox, .exports, .cardrow, .toasts, .foot p:last-child, #progressPanel { display: none !important; }
  body { background: #fff; color: #000; } .panel { border-color: #ccc; break-inside: avoid; }
}