/* Learn module supplemental styles. Loads after /styles.css (TUG base),
   which owns the nav, hero, footer, buttons, and brand variables:
   --evergreen --pine --summit --spruce --slate --cream --gold. */
:root {
  --learn-ok: #2F6B4F;
  --learn-err: #9B3B2E;
  --learn-line: #E4E0D7;
  --learn-panel: #ECE9E2;
}

/* Powered-by line (index only) */
.powered { color: var(--spruce); font-size: 0.82rem; font-family: 'Jura', sans-serif; letter-spacing: 0.06em; text-transform: uppercase; margin-top: 22px; }

/* Track cards */
.tracks { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 22px; }
.track-card {
  background: #fff; border-top: 3px solid var(--gold);
  border-radius: 0 0 4px 4px; padding: 26px 24px;
  display: flex; flex-direction: column; gap: 10px;
  text-decoration: none; color: var(--evergreen);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.track-card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(17,37,33,0.12); }
.track-card .tno {
  font-family: 'Jura', sans-serif; font-weight: 700; font-size: 0.75rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--pine);
}
.track-card p { color: var(--summit); font-size: 0.93rem; }
.track-card .tmeta { color: var(--spruce); font-size: 0.8rem; font-family: 'Jura', sans-serif; letter-spacing: 0.04em; margin-top: auto; }
.card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }

/* Progress ring */
.ring { width: 44px; height: 44px; flex: none; }
.ring circle.bg { fill: none; stroke: var(--learn-line); stroke-width: 4; }
.ring circle.fg {
  fill: none; stroke: var(--gold); stroke-width: 4; stroke-linecap: round;
  transform: rotate(-90deg); transform-origin: center;
  transition: stroke-dashoffset 0.4s ease;
}
.ring text {
  font-family: 'Jura', sans-serif; font-weight: 700; font-size: 11px;
  fill: var(--summit); text-anchor: middle; dominant-baseline: central;
}
.hero .ring circle.bg { stroke: var(--summit); }
.hero .ring text { fill: var(--slate); }

/* Track page */
.track-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.module { margin-bottom: 40px; }
.module > p { color: var(--summit); font-size: 0.95rem; max-width: 640px; margin-bottom: 14px; }
.lesson-list { list-style: none; }
.lesson-list li { border-bottom: 1px solid var(--learn-line); }
.lesson-list a {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 6px; text-decoration: none; color: var(--evergreen);
}
.lesson-list a:hover { background: var(--learn-panel); }
.lesson-list .lno { font-family: 'Jura', sans-serif; font-weight: 700; font-size: 0.8rem; color: var(--spruce); min-width: 2.2em; }
.lesson-list .ltitle { flex: 1; font-size: 0.98rem; }
.lesson-list .lmin { color: var(--spruce); font-size: 0.8rem; font-family: 'Jura', sans-serif; }
.done-mark {
  width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--slate);
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; color: transparent;
}
.done-mark.passed { background: var(--learn-ok); border-color: var(--learn-ok); color: #fff; }
.done-mark.read { border-color: var(--gold); }

/* Breadcrumbs */
.crumbs { font-family: 'Jura', sans-serif; font-size: 0.8rem; letter-spacing: 0.04em; text-transform: uppercase; margin: 26px 0 8px; color: var(--spruce); }
.crumbs a { color: var(--spruce); text-decoration: none; }
.crumbs a:hover { color: var(--gold); }
.hero .crumbs { margin-top: 0; color: var(--slate); }
.hero .crumbs a { color: var(--slate); }
.hero .crumbs a:hover { color: var(--gold); }
.hero .tstats { color: var(--slate); font-family: 'Jura', sans-serif; font-size: 0.85rem; margin-top: 12px; }

/* Lesson article */
article.lesson { max-width: 720px; margin: 0 auto; padding: 10px 0 40px; }
article.lesson h1 { margin: 6px 0 4px; }
.lmeta { font-family: 'Jura', sans-serif; color: var(--spruce); font-size: 0.82rem; letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 26px; }
.lsection { margin-bottom: 34px; }
.lsection p { margin-bottom: 1em; }
.lsection ul { margin: 0.4em 0 1em 1.3em; }
.lsection li { margin-bottom: 0.5em; font-size: 0.97rem; }
strong.hl { color: var(--pine); }

.chip {
  display: inline-block; font-family: 'Jura', sans-serif; font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 3px 10px; border-radius: 3px; margin-bottom: 8px;
  background: #E9E5DC; color: var(--summit);
}
.chip.tip, .chip.example { background: #EFE5D2; color: #7A6234; }
.chip.warning { background: #F0DCD6; color: var(--learn-err); }
.chip.bridge { background: var(--pine); color: var(--cream); }
.chip.scenario { background: #DFE8E2; color: var(--learn-ok); }

.callout {
  border-left: 3px solid var(--gold); background: #fff;
  padding: 16px 18px; margin: 14px 0; font-size: 0.93rem;
  color: var(--summit); border-radius: 0 4px 4px 0;
}
.bridge-panel { background: var(--evergreen); color: var(--cream); border-radius: 6px; padding: 24px 26px; margin: 10px 0; }
.bridge-panel h3 { color: var(--gold); }
.bridge-panel p { color: var(--slate); font-size: 0.95rem; }
.bridge-panel li { color: var(--slate); }
.bridge-panel strong.hl { color: var(--cream); }
.bridge-panel .callout { background: var(--pine); color: var(--slate); border-color: var(--gold); }

.tool-note {
  border: 1px dashed var(--slate); border-radius: 4px; padding: 16px 18px;
  font-size: 0.9rem; color: var(--summit); background: var(--learn-panel); margin-top: 10px;
}

/* Comparison table */
.tbl-scroll { overflow-x: auto; margin: 12px 0; }
table.cmp { border-collapse: collapse; width: 100%; background: #fff; font-size: 0.9rem; }
table.cmp th, table.cmp td { border: 1px solid var(--learn-line); padding: 9px 12px; text-align: left; }
table.cmp th { font-family: 'Jura', sans-serif; font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; background: var(--evergreen); color: var(--cream); }
table.cmp td:first-child { font-weight: 700; }

/* Chart bars */
.chart { margin: 14px 0; }
.chart-row { display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 10px; margin-bottom: 6px; }
.chart-row .clabel { font-family: 'Jura', sans-serif; font-size: 0.78rem; color: var(--summit); text-align: right; }
.cbar-wrap { background: var(--learn-line); border-radius: 2px; }
.cbar { height: 16px; border-radius: 2px; background: var(--pine); position: relative; min-width: 2px; }
.cbar.s1 { background: var(--gold); }
.cbar span {
  position: absolute; left: calc(100% + 8px); top: 50%; transform: translateY(-50%);
  font-family: 'Jura', sans-serif; font-size: 0.72rem; color: var(--spruce); white-space: nowrap;
}
.chart-legend { display: flex; gap: 18px; margin-bottom: 10px; font-family: 'Jura', sans-serif; font-size: 0.78rem; color: var(--summit); }
.chart-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; background: var(--pine); }
.chart-legend .k1 i { background: var(--gold); }

/* Key takeaway */
.takeaway { background: #fff; border: 2px solid var(--gold); border-radius: 6px; padding: 22px 24px; margin: 40px 0 10px; }
.takeaway .chip { background: var(--gold); color: var(--evergreen); }
.takeaway p { font-size: 0.98rem; }

/* Pager + module buttons (TUG .btn base; light-background variant here) */
.pager { display: flex; justify-content: space-between; gap: 14px; margin: 40px 0 10px; flex-wrap: wrap; }
.btn-line { color: var(--pine); border: 1px solid var(--slate); background: transparent; margin-left: 0; }
.btn-line:hover { border-color: var(--gold); color: var(--gold); }

/* Quiz */
.quiz-q { background: #fff; border-radius: 6px; padding: 22px 24px; margin-bottom: 20px; }
.quiz-q h3 { font-family: 'Merriweather', serif; font-size: 1.02rem; margin-bottom: 14px; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--learn-line); border-radius: 4px; margin-bottom: 8px; cursor: pointer; font-size: 0.94rem; }
.opt:hover { border-color: var(--gold); }
.opt input { margin-top: 5px; width: auto; accent-color: var(--pine); }
.opt.correct { border-color: var(--learn-ok); background: #EDF4EF; }
.opt.incorrect { border-color: var(--learn-err); background: #F6ECEA; }
.explain { display: none; font-size: 0.88rem; color: var(--summit); border-left: 3px solid var(--slate); padding: 8px 14px; margin-top: 10px; }
.explain.show { display: block; }
.explain.good { border-color: var(--learn-ok); }
.explain.bad { border-color: var(--learn-err); }
.quiz-warn { display: none; color: var(--learn-err); font-size: 0.9rem; margin-bottom: 14px; }
.quiz-result { display: none; background: var(--evergreen); color: var(--cream); border-radius: 6px; padding: 26px 28px; margin: 26px 0; }
.quiz-result.show { display: block; }
.quiz-result .score { font-family: 'Jura', sans-serif; font-weight: 700; font-size: 2rem; color: var(--gold); }
.quiz-result p { color: var(--slate); font-size: 0.95rem; margin-top: 6px; }
.quiz-actions { margin: 10px 0 40px; display: flex; gap: 12px; flex-wrap: wrap; }
.quiz-actions .btn { margin: 0; }

/* Footer compliance line */
.learn-fine { flex-basis: 100%; font-size: 0.78rem; color: var(--spruce); }

@media (max-width: 640px) {
  .chart-row { grid-template-columns: 76px 1fr; }
  .cbar span { display: none; }
  .pager .btn { flex: 1; text-align: center; }
}