/* Python course: quiz, campaign and sandbox styles.
   Design tokens and page chrome live in /assets/css/base.css. */

/* ---------------------------------------------------------------- topics */
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: .9rem; margin-bottom: 3rem; }

.topic-card {
  display: block; position: relative;
  background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.1rem 1.15rem 1rem;
  color: var(--text); transition: border-color .14s, transform .1s;
}
.topic-card:hover { border-color: var(--border-hi); text-decoration: none; transform: translateY(-2px); }
.topic-card h3 { margin: 0 0 .25rem; font-size: 1rem; font-weight: 600; letter-spacing: -.01em; }
.topic-card .tagline { margin: 0 0 .85rem; color: var(--text-dim); font-size: .85rem; line-height: 1.45; }
.topic-icon {
  position: absolute; top: 1rem; right: 1.1rem;
  font-size: 1.1rem; color: var(--accent); opacity: .8;
}
.topic-meta { display: flex; align-items: center; gap: .6rem; font-size: .76rem; color: var(--text-faint); }

/* ------------------------------------------------------------------ quiz */
.quiz-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .9rem; flex-wrap: wrap; }
.quiz-head .crumb { font-size: .82rem; color: var(--text-faint); }
.quiz-head .crumb a { color: var(--text-dim); }
.counter { font-family: var(--mono); font-size: .82rem; color: var(--text-faint); }

.quiz-progress { height: 3px; background: var(--surface-hi); border-radius: 99px; overflow: hidden; margin-bottom: 2rem; }
.quiz-progress > div { height: 100%; background: var(--accent); transition: width .3s; }

.q-title { font-size: clamp(1.3rem, 3.4vw, 1.7rem); letter-spacing: -.02em; margin: 0 0 .6rem; font-weight: 620; line-height: 1.25; }

.q-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-bottom: 1.4rem; }
.q-prompt { font-size: 1.02rem; color: var(--text-dim); margin: 0 0 1.4rem; max-width: 46rem; }

/* ------------------------------------------------------------------ code */
.code-wrap { position: relative; margin: 0 0 1.5rem; }
.code-block {
  margin: 0; padding: 1.1rem 1.2rem; overflow-x: auto;
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: var(--radius); font-size: .875rem; line-height: 1.65;
  tab-size: 4;
}
/* Always visible: running a snippet is the point of the site, and a
   hover-only affordance would be invisible on touch devices entirely. */
.code-actions {
  position: absolute; top: .55rem; right: .55rem;
  display: flex; gap: .35rem; opacity: .7; transition: opacity .15s;
}
.code-wrap:hover .code-actions, .code-actions:focus-within { opacity: 1; }

.tok-kw { color: var(--syn-kw); }
.tok-str { color: var(--syn-str); }
.tok-num { color: var(--syn-num); }
.tok-com { color: var(--syn-com); font-style: italic; }
.tok-fn { color: var(--syn-fn); }
.tok-builtin { color: var(--syn-builtin); }
.tok-const { color: var(--syn-const); }
.tok-self { color: var(--syn-self); font-style: italic; }
.tok-deco { color: var(--syn-deco); }

/* --------------------------------------------------------------- options */
.options { display: grid; gap: .6rem; margin-bottom: 1.5rem; }

.option {
  display: flex; align-items: flex-start; gap: .85rem; width: 100%; text-align: left;
  background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .85rem 1rem;
  color: var(--text); font: inherit; cursor: pointer;
  transition: border-color .12s, background .12s;
}
.option:hover:not(:disabled) { border-color: var(--border-hi); background: var(--surface); }
.option:disabled { cursor: default; }

.option-key {
  flex: none; width: 1.5rem; height: 1.5rem; border-radius: 6px;
  background: var(--surface-hi); border: 1px solid var(--border);
  display: grid; place-items: center;
  font-family: var(--mono); font-size: .78rem; color: var(--text-faint);
}
.option-body { flex: 1; min-width: 0; }
.option-body pre { margin: 0; font-family: var(--mono); font-size: .84rem; line-height: 1.55; white-space: pre-wrap; word-break: break-word; }

.option.is-correct { border-color: var(--ok); background: var(--ok-bg); }
.option.is-correct .option-key { background: var(--ok); border-color: var(--ok); color: var(--bg); }
.option.is-wrong { border-color: var(--bad); background: var(--bad-bg); }
.option.is-wrong .option-key { background: var(--bad); border-color: var(--bad); color: var(--bg); }
.option.is-dim { opacity: .5; }

/* --------------------------------------------------------------- verdict */
.verdict { display: flex; align-items: center; gap: .6rem; font-weight: 600; margin-bottom: 1rem; font-size: .95rem; }
.verdict.good { color: var(--ok); }
.verdict.bad { color: var(--bad); }

.explain {
  background: var(--bg-raised); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius); padding: 1.2rem 1.35rem; margin-bottom: 1.25rem;
}
.explain h4 { margin: 0 0 .7rem; font-size: .76rem; text-transform: uppercase; letter-spacing: .09em; color: var(--text-faint); font-weight: 600; }
.explain p { margin: 0 0 .85rem; }
.explain p:last-child { margin-bottom: 0; }
.explain code, .brief code, .q-prompt code, .hint code {
  background: var(--surface-hi); border: 1px solid var(--border);
  border-radius: 5px; padding: .08em .34em; font-size: .86em;
}

/* ------------------------------------------------------------ comparison */
.compare { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 1.5rem; }
.compare-tabs { display: flex; background: var(--surface); border-bottom: 1px solid var(--border); }
.compare-tabs button {
  flex: 1; background: none; border: 0; border-bottom: 2px solid transparent;
  padding: .6rem .5rem; color: var(--text-faint); font: inherit; font-size: .82rem;
  cursor: pointer; transition: color .12s, border-color .12s;
}
.compare-tabs button:hover { color: var(--text); }
.compare-tabs button[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); }
.compare-panel { padding: 1.1rem 1.25rem; background: var(--bg-raised); font-size: .93rem; }
.compare-panel p { margin: 0; }

/* ---------------------------------------------------------------- runner */
.sandbox { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 1.5rem; background: var(--bg-raised); }
.sandbox-head {
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  padding: .55rem .8rem; background: var(--surface); border-bottom: 1px solid var(--border);
  font-size: .8rem; color: var(--text-faint);
}
.sandbox-head strong { color: var(--text-dim); font-weight: 600; }
.editor {
  display: block; width: 100%; border: 0; resize: vertical;
  background: var(--code-bg); color: var(--text);
  font-family: var(--mono); font-size: .875rem; line-height: 1.65;
  padding: 1rem 1.15rem; min-height: 9rem; tab-size: 4;
}
.editor:focus { outline: none; box-shadow: inset 0 0 0 2px var(--info); }

.console {
  margin: 0; padding: .9rem 1.15rem; white-space: pre-wrap; word-break: break-word;
  font-family: var(--mono); font-size: .84rem; line-height: 1.6;
  border-top: 1px solid var(--border); background: var(--code-bg); color: var(--text-dim);
  max-height: 20rem; overflow: auto;
}
.console:empty { display: none; }
.console.ok { color: var(--ok); }
.console.err { color: var(--bad); }

.loading-note { font-size: .8rem; color: var(--text-faint); }

/* ----------------------------------------------------------------- hints */
.hints { margin-bottom: 1.5rem; }
.hint {
  background: var(--bg-raised); border: 1px solid var(--border);
  border-left: 3px solid var(--info);
  border-radius: var(--radius); padding: .8rem 1rem; margin-bottom: .55rem; font-size: .92rem;
}
.hint-n { color: var(--text-faint); font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; display: block; margin-bottom: .25rem; }

.brief { font-size: 1rem; color: var(--text-dim); max-width: 46rem; margin-bottom: 1.5rem; }
.brief p { margin: 0 0 .7rem; }
.brief p:last-child { margin-bottom: 0; }
.brief strong { color: var(--text); }

/* ----------------------------------------------------------------- lists */
.summary-score { font-size: 3.4rem; font-family: var(--mono); font-weight: 650; letter-spacing: -.03em; line-height: 1; margin-bottom: .3rem; }
.summary-score.good { color: var(--ok); }
.summary-score.mid { color: var(--accent); }
.summary-score.bad { color: var(--bad); }

.kbd-hint { font-size: .78rem; color: var(--text-faint); margin-top: 1.25rem; }


  .lang-picker .lang-label { display: none; }
  .topnav { gap: .5rem; }

  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }

/* -------------------------------------------------------------- campaign */
.rank-note { margin: -1.5rem 0 2.5rem; font-size: .85rem; color: var(--text-faint); }
.rank-note strong { color: var(--accent); font-weight: 600; }

.act { margin-bottom: 2.75rem; }
.act-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: .3rem; }
.act-head h2 { margin: 0; font-size: 1.05rem; font-weight: 620; letter-spacing: -.01em; }
.act-num {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); margin-right: .5rem;
}
.act-progress { font-family: var(--mono); font-size: .82rem; color: var(--text-faint); }
.act-blurb { margin: 0 0 1rem; color: var(--text-faint); font-size: .87rem; max-width: 44rem; }

.level-list { display: grid; gap: .6rem; }

.level-card {
  display: flex; align-items: center; gap: 1rem;
  background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .9rem 1.1rem; color: var(--text);
  transition: border-color .14s, transform .1s;
}
a.level-card:hover { border-color: var(--border-hi); text-decoration: none; transform: translateX(2px); }
.level-card.locked { opacity: .45; }
.level-card.cleared { border-left: 3px solid var(--ok); }

.level-number {
  flex: none; width: 2.1rem; height: 2.1rem; border-radius: 8px;
  background: var(--surface-hi); border: 1px solid var(--border);
  display: grid; place-items: center;
  font-family: var(--mono); font-size: .9rem; font-weight: 600; color: var(--text-dim);
}
.level-card.cleared .level-number { background: var(--ok); border-color: var(--ok); color: var(--bg); }

.level-body { flex: 1; min-width: 0; display: block; }
.level-title { display: block; font-weight: 600; font-size: .97rem; margin-bottom: .1rem; }
.level-blurb { display: block; color: var(--text-faint); font-size: .84rem; line-height: 1.45; }
.level-meta { display: block; margin-top: .3rem; font-family: var(--mono); font-size: .74rem; color: var(--text-faint); }

.level-stars { flex: none; font-size: .95rem; letter-spacing: .1em; white-space: nowrap; }
.star { color: var(--border-hi); }
.star.on { color: var(--accent); }

/* ---------------------------------------------------------- level runner */
.level-banner {
  margin: 0 0 1.75rem; font-family: var(--mono); font-size: .78rem;
  letter-spacing: .06em; text-transform: uppercase; color: var(--text-faint);
}

.level-intro, .level-summary {
  background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius); padding: clamp(1.5rem, 5vw, 2.75rem);
  margin: 1.5rem 0 2rem; text-align: center;
}
.level-intro { text-align: left; }
.level-intro-number {
  display: block; font-family: var(--mono); font-size: .76rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent); margin-bottom: .5rem;
}
.level-intro h2 { margin: 0 0 .6rem; font-size: clamp(1.4rem, 4vw, 1.9rem); letter-spacing: -.02em; }
.level-intro > p { margin: 0 0 1.4rem; color: var(--text-dim); max-width: 40rem; }
.level-intro-list { list-style: none; padding: 0; margin: 0 0 1.75rem; display: grid; gap: .45rem; }
.level-intro-list li { color: var(--text-dim); font-size: .92rem; padding-left: 1.2rem; position: relative; }
.level-intro-list li::before { content: "›"; position: absolute; left: 0; color: var(--accent); }
.level-intro-list strong { color: var(--text); }

.summary-stars { font-size: 2rem; letter-spacing: .25em; margin-bottom: .75rem; }
.summary-xp { font-family: var(--mono); font-size: .9rem; color: var(--accent); margin: 0; }

.xp-gain {
  font-family: var(--mono); font-size: .78rem; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-radius: 99px; padding: .1rem .5rem; font-weight: 600;
}

.pill-code {
  color: var(--info); border-color: color-mix(in srgb, var(--info) 40%, var(--border));
}

.tool-row { display: flex; gap: .5rem; flex-wrap: wrap; margin: -.5rem 0 1.5rem; }

.assertions { margin-bottom: 1.5rem; }
.assertions summary { cursor: pointer; color: var(--text-dim); font-size: .9rem; }

.level-card.current {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 20%, transparent);
}
.level-card.current .level-number { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.here { color: var(--accent); text-transform: uppercase; letter-spacing: .08em; }