:root {
  --felt: #1d3a30;
  --felt-deep: #16302733;
  --ink: #f2ece1;
  --ink-dim: #a8b8ae;
  --rope: #d9a441;
  --rope-dark: #8a5a1c;
  --brass: #e8c37a;
  --brass-dark: #6b4a12;
  --good: #6fdc9a;
  --bad: #ef7a6a;
  --line: #ffffff1f;
}

* { box-sizing: border-box; }

/* An explicit display rule outranks the UA style for [hidden], so without this
   the flex rows below ignore the attribute entirely. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(ellipse at 50% 0%, #24473b 0%, var(--felt) 60%, #14261f 100%);
  color: var(--ink);
  font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem 0.25rem;
  max-width: 1180px;
  margin: 0 auto;
}
/* On the game page the nav bar above already supplies the top spacing. */
#site-nav + header { padding-top: 0.55rem; }
/* The way back to the gallery, as a bar of its own above the game.
   It used to be a line of text tucked over the title, one word away from the
   level picker on the same row — "All games" beside "All puzzles" — which read
   as two halves of one control. Site navigation and navigation within a game
   are different things and now look it: this sits outside the game's header
   entirely, and the picker is named for levels rather than for everything. */
#site-nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.6rem 1.25rem 0;
}
.home-link {
  display: inline-block;
  padding: 0.3rem 0.7rem 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-dim);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.home-link:hover,
.home-link:focus-visible {
  color: var(--ink);
  border-color: #ffffff40;
  background: #ffffff0d;
}

.brand p {
  margin: 0.25rem 0 0;
  color: var(--ink-dim);
  font-size: 0.86rem;
}
.header-actions { display: flex; gap: 0.5rem; align-items: center; }
h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass);
}

main {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

#board-pane { flex: 1 1 auto; min-width: 0; }

#goal {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.6rem 0.2rem;
  font-size: 0.98rem;
}

#goal-text { color: var(--ink); }
#goal-text b { color: var(--brass); font-weight: 650; }
#score { color: var(--ink-dim); white-space: nowrap; font-variant-numeric: tabular-nums; }

#stage { position: relative; }

#board {
  display: block;
  width: 100%;
  height: min(52vh, 520px);
  background: linear-gradient(160deg, #ffffff0a, #00000026);
  border: 1px solid var(--line);
  border-radius: 14px;
  touch-action: manipulation;
}


/* In normal flow, not floating over the board — it used to cover the bottom of
   the finished knot, which is the one thing you want to look at. */
#verdict {
  margin-top: 0.85rem;
  padding: 0.8rem 1rem;
  background: #0d1a16cc;
  border: 1px solid var(--line);
  border-radius: 12px;
}

#scrub {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 0.7rem;
  color: var(--ink-dim);
  font-size: 0.82rem;
}
#scrub-range {
  flex: 1 1 auto;
  accent-color: var(--brass);
  cursor: grab;
}
#scrub-range:active { cursor: grabbing; }
#verdict p { margin: 0 0 0.35rem; }
#verdict-title { font-weight: 650; font-size: 1.05rem; }
#verdict.win #verdict-title { color: var(--good); }
#verdict.lose #verdict-title { color: var(--bad); }
#verdict-detail { color: var(--ink-dim); font-size: 0.92rem; }
.verdict-actions { display: flex; gap: 0.5rem; margin-top: 0.7rem; }

#controls { display: flex; gap: 0.6rem; margin-top: 0.85rem; }

#hint {
  color: var(--ink-dim);
  font-size: 0.88rem;
  margin: 0.85rem 0.2rem 0;
  min-height: 1.5em;
}
#hint.tip {
  color: var(--good);
  border-left: 2px solid #6fdc9a66;
  padding-left: 0.7rem;
}

.chip.assisted { color: #cbb27a; border-color: #cbb27a55; }

button {
  font: inherit;
  font-size: 0.94rem;
  padding: 0.5rem 0.95rem;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: #ffffff12;
  color: var(--ink);
  cursor: pointer;
}
button:hover:not(:disabled) { background: #ffffff20; }
button:disabled { opacity: 0.45; cursor: default; }
button.primary { background: var(--brass); border-color: var(--brass); color: #241a05; font-weight: 600; }
button.primary:hover:not(:disabled) { background: #f0d093; }
button.ghost { background: transparent; }

#picker {
  flex: 0 0 300px;
  max-height: 78vh;
  overflow-y: auto;
  padding: 0.9rem 1rem;
  background: #0d1a1699;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.picker-head { display: flex; justify-content: space-between; align-items: center; }
.picker-head h2 { font-size: 1rem; margin: 0; }
.picker-note { color: var(--ink-dim); font-size: 0.82rem; margin: 0.4rem 0 0.8rem; }
.group-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--ink-dim);
  margin: 0.9rem 0 0.4rem;
}
.group { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.chip {
  padding: 0.22rem 0.5rem;
  font-size: 0.82rem;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: #ffffff0d;
  cursor: pointer;
  font-variant-numeric: tabular-nums;
}
.chip:hover { background: #ffffff20; }
.chip.current { outline: 2px solid var(--brass); }
.chip.solved { color: var(--good); border-color: #6fdc9a55; }
.chip.perfect { background: #6fdc9a2b; color: var(--good); border-color: #6fdc9a88; }

footer {
  max-width: 1180px;
  margin: 2rem auto 0;
  padding: 1rem 1.25rem 2rem;
  color: var(--ink-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--line);
}
footer p { margin: 0.3rem 0; }
footer a { color: var(--brass); }

@media (max-width: 860px) {
  main { flex-direction: column; }
  #picker { flex: 1 1 auto; width: 100%; max-height: 60vh; }
}

.colophon { margin-top: 0.6rem; opacity: 0.75; }