/* Identify the Commodity.
 *
 * ⚡ EVERY COLOUR HERE IS ONE OF THE SITE'S OWN TOKENS - --bg, --fg, --accent,
 * --line and so on, declared once in site.css. No palette is redeclared.
 *
 * That is deliberate and it is the lesson from the courses. course.css shipped
 * its own --ce-* tokens switched by `prefers-color-scheme: dark` and by an
 * explicit <html data-theme="dark">. This site does NEITHER: dark is its
 * DEFAULT and it only ever sets data-theme="light". So a visitor on a
 * light-mode OS got the component's light ink on the site's near-black page,
 * and it took a screenshot to find because every automated check passed. By
 * borrowing the host's tokens instead of declaring any, this file cannot
 * disagree with the page it is on, in either theme, ever.
 */

.cg { max-width: var(--maxw); margin: 0 auto; padding: 0 1.1rem 4rem; }

.cg-eyebrow {
  font: 650 .7rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin: 1.6rem 0 .5rem;
}
.cg-h1 { font: 400 clamp(2rem, 4.5vw, 3rem)/1.08 var(--serif); margin: 0 0 .7rem; }
.cg-lede { font-size: 1.05rem; line-height: 1.6; color: var(--fg-dim); max-width: 60ch; margin: 0 0 2rem; }

/* ---------------------------------------------------------------- play --- */
.cg-play { margin: 0 0 3rem; }
.cg-pick__h {
  font: 650 .72rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 .7rem;
}
.cg-tiers { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.cg-tier {
  display: flex; flex-direction: column; gap: .3rem; text-align: left;
  padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg2); color: var(--fg); cursor: pointer; font: inherit;
  transition: border-color .15s, transform .15s;
}
.cg-tier:hover { border-color: var(--accent); transform: translateY(-2px); }
.cg-tier b { font: 600 1.05rem/1.2 var(--serif); }
.cg-tier__n { font: 600 .7rem/1 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.cg-tier__b { font-size: .86rem; color: var(--fg-dim); line-height: 1.45; }

.cg-bar {
  display: flex; align-items: center; gap: .9rem; margin: 0 0 .9rem;
  font: 600 .74rem/1 var(--sans); letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted);
}
.cg-bar__sp { margin-inline-start: auto; }
.cg-quit, .cg-next, .cg-again {
  font: 600 .74rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase;
  padding: .5rem .85rem; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--line); background: transparent; color: var(--fg-dim);
}
.cg-quit:hover { border-color: var(--danger); color: var(--danger); }
.cg-next, .cg-again {
  border-color: var(--accent); background: var(--accent); color: var(--ink-on-accent);
}
.cg-next:hover, .cg-again:hover { background: var(--accent-soft); border-color: var(--accent-soft); }

.cg-shot {
  margin: 0 0 1rem; border: 1px solid var(--line); border-radius: 10px;
  overflow: hidden; background: var(--bg2);
}
/* A fixed box stops the page jumping as each specimen loads. */
.cg-shot img { display: block; width: 100%; height: clamp(16rem, 42vh, 26rem); object-fit: cover; }

.cg-q { font: 400 1.3rem/1.3 var(--serif); margin: 0 0 .9rem; }
.cg-opts { display: grid; gap: .55rem; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.cg-opt {
  padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 9px;
  background: var(--bg2); color: var(--fg); font: 500 .98rem/1.3 var(--sans);
  text-align: left; cursor: pointer; transition: border-color .15s, background .15s;
}
.cg-opt:hover:not(:disabled) { border-color: var(--accent); }
.cg-opt:disabled { cursor: default; }
.cg-opt.is-right { border-color: var(--patina); background: color-mix(in srgb, var(--patina) 16%, var(--bg2)); }
.cg-opt.is-wrong { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 14%, var(--bg2)); }

.cg-after { margin: 1.1rem 0 0; padding: 1.1rem 1.2rem; border: 1px solid var(--line); border-radius: 10px; background: var(--bg2); }
.cg-verdict { font: 600 1rem/1.3 var(--sans); margin: 0 0 .5rem; }
.cg-verdict.ok { color: var(--patina); }
.cg-verdict.no { color: var(--danger); }
.cg-clue, .cg-fact { margin: 0 0 .6rem; line-height: 1.6; color: var(--fg-dim); }
.cg-fact { font-size: .93rem; }
.cg-cred { margin: 0 0 .9rem; font-size: .76rem; color: var(--muted); }
.cg-cred a { color: inherit; }

.cg-done { padding: 1.6rem; border: 1px solid var(--line); border-radius: 10px; background: var(--bg2); text-align: center; }
.cg-done__score { font: 400 2rem/1.1 var(--serif); margin: 0 0 .4rem; }
.cg-done__msg { color: var(--fg-dim); margin: 0 0 1.2rem; }

/* ----------------------------------------------------------- reference --- */
.cg-ref__head { border-top: 1px solid var(--line); padding-top: 1.6rem; margin-top: 1rem; }
.cg-ref__head h2 { font: 400 1.7rem/1.15 var(--serif); margin: 0 0 .4rem; }
.cg-ref__note { color: var(--fg-dim); margin: 0 0 1.8rem; max-width: 62ch; line-height: 1.6; }

.cg-sec { margin: 0 0 2.6rem; }
.cg-sec h3 { font: 400 1.25rem/1.2 var(--serif); margin: 0 0 .25rem; }
.cg-sec__n {
  font: 600 .66rem/1 var(--sans); letter-spacing: .1em; color: var(--accent);
  vertical-align: middle; margin-inline-start: .45rem;
}
.cg-sec__b { color: var(--muted); font-size: .88rem; margin: 0 0 1rem; }

.cg-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem;
           grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr)); }
.cg-card {
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  background: var(--bg2); display: flex; flex-direction: column;
}
.cg-card__img { display: block; width: 100%; height: 11rem; object-fit: cover; background: var(--bg); }
.cg-card__body { padding: .9rem 1rem 1rem; }
.cg-card__body h4 { font: 600 1.05rem/1.2 var(--serif); margin: 0 0 .15rem; }
.cg-card__cls {
  font: 600 .66rem/1 var(--sans); letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 .6rem;
}
.cg-card__clue { margin: 0 0 .6rem; line-height: 1.55; font-size: .92rem; }
.cg-card__fact { margin: 0 0 .7rem; line-height: 1.5; font-size: .84rem; color: var(--fg-dim); }
.cg-card__cred { margin: 0; font-size: .72rem; color: var(--muted); }
.cg-card__cred a { color: inherit; }

.cg-credits .sub { display: block; font-size: .74rem; color: var(--muted); }
.cg-foot { margin: 2rem 0 0; font-size: .85rem; color: var(--muted); line-height: 1.6; max-width: 70ch; }

@media (max-width: 560px) {
  .cg-shot img { height: 14rem; }
  .cg-opts { grid-template-columns: 1fr; }
}