/* The host's /static/css/style.css supplies typography, spacing and colours. */
main {
  max-width: var(--max-width);
  margin: 0 auto;
}

.puzzle-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
}

.puzzle-nav h1 { margin: 0; font-size: 1rem; }
.puzzle-nav > :last-child { text-align: right; }
.puzzle-nav a { font-size: 0.9rem; }
a:hover, .text-button:hover { text-decoration: underline; }
.difficulty { color: var(--text-muted); font-size: 0.8rem; margin: -1rem 0 1rem; }
.archive-difficulty { color: var(--text-muted); }
.progress-note, .puzzle-state { color: var(--text-muted); font-size: 0.8rem; }
a[aria-disabled="true"] { color: var(--text-muted); cursor: default; text-decoration: none; }

.diagram {
  width: 100%;
  height: auto;
  max-height: 24rem;
  object-fit: contain;
  margin: 1rem auto 1.5rem;
  mix-blend-mode: multiply;
}

[data-theme="dark"] .diagram {
  filter: invert(1) hue-rotate(180deg);
  mix-blend-mode: screen;
}

label { display: block; margin-bottom: 0.35rem; }
.unit, small { color: var(--text-muted); }
small { display: block; font-size: 0.75rem; margin-top: 0.35rem; }
.answer-row { display: flex; gap: 0.5rem; }
input, button { font: inherit; }
input {
  width: 100%;
  min-width: 0;
  color: var(--text-color);
  background: var(--bg-color);
  border: 1px solid var(--text-lighter);
  border-radius: 0;
  padding: 0.3rem 0.5rem;
}
button { cursor: pointer; }
#check {
  flex-shrink: 0;
  white-space: nowrap;
  border: 1px solid var(--text-lighter);
  border-radius: 0;
  background: var(--bg-color);
  color: var(--text-color);
  padding: 0.3rem 0.8rem;
}
button:disabled { cursor: default; opacity: 0.6; }
.help-actions { display: flex; gap: 1.5rem; margin-top: 1rem; }
.text-button { border: 0; padding: 0; color: var(--accent); background: none; }
#hints, #solution ol { padding-left: 1.5rem; }
#hints li, #solution li { margin: 0.6rem 0; }
#solution { border-top: 1px solid var(--border-color); margin-top: 1.5rem; }
.puzzle-list { margin-top: 2rem; font-size: 0.9rem; }
.puzzle-list summary { color: var(--accent); cursor: pointer; width: fit-content; }
.puzzle-list ol { list-style: none; padding: 0; margin: 0.5rem 0; }
.puzzle-list li { margin: 0.25rem 0; }
.puzzle-list [aria-current="page"] { color: var(--text-color); font-weight: 600; }
summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }

@media (max-width: 600px) {
  body { padding: 1.25rem 1rem; }
  .puzzle-nav { gap: 0.5rem; }
}

@media print {
  body { padding: 0; color: #222; background: #fff; }
  .puzzle-nav a, form, .help-actions, .puzzle-list, #hints, #solution, #feedback, noscript { display: none !important; }
  .diagram, [data-theme="dark"] .diagram { filter: none; mix-blend-mode: normal; }
}

.app-nav { display: flex; align-items: center; justify-content: space-between; max-width: var(--max-width); margin: 0 auto 1rem; gap: 1rem; }
.app-nav .theme-toggle { position: static; flex-shrink: 0; }