/* What Is This Course For? — styles.
   Shares the design language of ../susan-and-robert/ and ../constructive-alignment/
   (same SEA-EU thinking-surface family, same tokens). */

:root {
  /* text-only shades of the accent colours, 4.5:1 or better on every course background (30 Sep 2026) */
  --text-ochre: #855c15; --text-green: #4c6a3a; --text-brown: #8e4f22;
  --paper: #f5f2ea;
  --card: #fcfaf4;
  --inset: #efeadd;
  --ink: #23261f;
  --ink-soft: #474b40;
  --muted: #6b6557;
  --hair: #ddd6c4;
  --hair-strong: #c9c1ab;
  --danger: #a8442c;
  --danger-soft: #f4e6df;
  --ok: #587d4b;
  --ok-soft: #e9eedd;
  --warn: #b7822f;
  --warn-soft: #f5ecd8;
  --ai: #6c58a8;
  --ai-soft: #ece7f4;
  /* the three purposes — from the shared palette */
  --c-qual: #34708b;
  --c-soc: #a25e2e;
  --c-subj: #587d4b;
  /* 02–03: the chosen and the given (kept apart from the three purposes' hues) */
  --c-chosen: #b7822f;
  --c-given: #5f6b7a;
  --font-ui: "Schibsted Grotesk", system-ui, sans-serif;
  --font-display: "Newsreader", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

.app { min-height: 100vh; display: flex; flex-direction: column; }

/* ---------- masthead ---------- */

.masthead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding: 26px 44px 0 44px;
  border-bottom: 1px solid var(--hair-strong);
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.masthead-id { padding-bottom: 18px; }

.masthead-eyebrow {
  margin: 0 0 4px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.masthead-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 34px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  font-optical-sizing: auto;
}

.lens-tabs { display: flex; gap: 4px; }

.lens-tab {
  appearance: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 14px 16px 16px 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  cursor: pointer;
  color: var(--muted);
  font-family: var(--font-ui);
  transition: color 0.15s ease;
}

.lens-tab:hover { color: var(--ink-soft); }

.lens-tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.lens-tab-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.lens-tab-name { font-size: 15.5px; font-weight: 600; }

/* ---------- layout ---------- */

.layout {
  display: grid;
  grid-template-columns: minmax(380px, 5fr) minmax(420px, 6fr);
  gap: 48px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 36px 44px 64px 44px;
  flex: 1;
  align-items: start;
}

.stage { position: sticky; top: 28px; }

.stage-caption {
  margin: 6px auto 0 auto;
  max-width: 420px;
  text-align: center;
  font-size: 15px;
  line-height: 1.5;
  color: var(--muted);
}

.panel { min-width: 0; }

.lens-panel { display: flex; flex-direction: column; gap: 18px; }

/* ---------- the diagram (Venn of the three purposes) ---------- */

.pp-svg { width: 100%; height: auto; display: block; }

.pp-circle-fill { opacity: 0.13; transition: opacity 0.3s ease; }
.pp-circle-ring { fill: none; stroke-width: 1.6; opacity: 0.55; transition: opacity 0.3s ease, stroke-width 0.3s ease; }
.pp-circle-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 21px;
  transition: opacity 0.3s ease;
}
.pp-circle-tag {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  fill: var(--ink-soft);   /* sits on the circle tints: muted fell to 3:1 there */
  transition: opacity 0.3s ease;
}

.pp-circle.is-selected .pp-circle-fill { opacity: 0.26; }
.pp-circle.is-selected .pp-circle-ring { stroke-width: 2.6; opacity: 0.9; }
.pp-circle.is-dim .pp-circle-fill, .pp-circle.is-dim .pp-circle-ring { opacity: 0.4; }   /* the text stays readable (WCAG contrast) */
.pp-circle.is-dim .pp-circle-label { fill: var(--ink-soft) !important; }
.pp-circle.is-selected .pp-circle-label { fill: var(--ink) !important; }   /* on its own stronger tint */
.pp-circle [tabindex]:focus-visible { outline: none; }
.pp-circle:focus-visible .pp-circle-ring { stroke-width: 2.6; opacity: 0.9; }

.pp-centre-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  fill: var(--ink);   /* sits where all three tints overlap */
  pointer-events: none;
}

/* "your course" marker — only shown on the mix tab */
.pp-marker { opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.pp-svg.show-marker .pp-marker { opacity: 1; pointer-events: auto; }
.pp-marker-stem { stroke: var(--ink); stroke-width: 1.2; opacity: 0.5; }
.pp-marker-ring { fill: none; stroke: var(--ink); stroke-width: 1.3; opacity: 0.4; }
.pp-marker-dot { fill: var(--ink); stroke: var(--paper); stroke-width: 2; }
.pp-marker-label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  fill: var(--ink);
  paint-order: stroke;
  stroke: var(--paper);
  stroke-width: 5px;
}

/* ---------- cards (shared vocabulary) ---------- */

.detail-card {
  background: var(--card);
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 26px 28px;
}

.detail-kicker {
  margin: 0 0 6px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.detail-title {
  margin: 0 0 12px 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 25px;
  line-height: 1.18;
  letter-spacing: -0.005em;
}

.detail-body {
  margin: 0 0 12px 0;
  font-size: 17px;
  line-height: 1.68;
  color: var(--ink-soft);
}
.detail-body:last-child { margin-bottom: 0; }

.detail-craft {
  margin: 0 0 16px 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.detail-craft li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.detail-craft li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--hair-strong);
}
.detail-craft:last-child { margin-bottom: 0; }

.detail-example {
  background: var(--inset);
  border-radius: 6px;
  padding: 16px 18px;
}
.detail-example-kicker {
  margin: 0 0 6px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.detail-example-text {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.5;
  font-style: italic;
}

.detail-hint {
  margin: 14px 0 0 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--muted);
}

.footnote {
  margin: 8px 0 0 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.bq { margin: 0 0 12px 0; padding: 4px 0 0 0; }
.bq p {
  margin: 0 0 8px 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 19px;
  line-height: 1.5;
}
.bq cite {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 13px;
  color: var(--muted);
}

.pp-domain-card { border-left: 4px solid var(--dc); }

/* ---------- domain picker ---------- */

.domain-picker { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

.domain-pick {
  appearance: none;
  text-align: left;
  background: none;
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--muted);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.domain-pick:hover { border-color: var(--hair-strong); color: var(--ink-soft); }
.domain-pick.is-active { background: var(--card); border-color: var(--ink); color: var(--ink); }
.domain-pick-name { font-size: 14.5px; font-weight: 600; display: flex; align-items: center; gap: 7px; }
.domain-pick-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--pp-color); flex: none; }
.domain-pick-tag { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.04em; }

/* ---------- the "name your mix" readout ---------- */

.sim-block {
  border-top: 1px solid var(--hair-strong);
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sim-kicker {
  margin: 0 0 -8px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.sim-block .detail-title { margin-bottom: 0; }

.sim-result {
  background: var(--card);
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.pp-readout-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.pp-meter { display: flex; flex-direction: column; gap: 6px; }
.pp-meter-head { display: flex; justify-content: space-between; align-items: baseline; }
.pp-meter-name { font-size: 14.5px; font-weight: 600; }
.pp-meter-val { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-soft); }
.pp-meter-track { height: 7px; border-radius: 4px; background: var(--inset); overflow: hidden; }
.pp-meter-fill { height: 100%; border-radius: 4px; transition: width 0.15s ease; }

.pp-reading {
  margin: 4px 0 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}

.pp-tension { margin: 4px 0 2px 0; }
.pp-tension-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.pp-tension-head > span { display: flex; flex-direction: column; gap: 1px; }
.pp-tension-right { text-align: right; }
.pp-tension-label { font-size: 13px; font-weight: 600; color: var(--ink); }
.pp-tension-sub { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; color: var(--muted); }
.pp-tension-track {
  height: 7px;
  border-radius: 4px;
  background: var(--c-subj);
  overflow: hidden;
}
.pp-tension-fill { height: 100%; background: var(--c-qual); border-radius: 0; transition: width 0.15s ease; }

/* ---------- purpose-first interactions ---------- */

.pp-prompt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 4px; }
.pp-prompt { background: var(--inset); border-radius: 6px; padding: 14px 16px; }
.pp-prompt-q { margin: 0 0 6px 0; font-family: var(--font-display); font-style: italic; font-size: 17px; color: var(--ink); }
.pp-prompt-a { margin: 0; font-size: 15px; line-height: 1.55; color: var(--ink-soft); }

.pp-swaps { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.pp-swap {
  appearance: none;
  text-align: left;
  background: var(--inset);
  border: 1px solid var(--hair);
  border-radius: 6px;
  padding: 11px 14px;
  cursor: pointer;
  font-family: var(--font-ui);
  display: flex;
  align-items: baseline;
  gap: 10px;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.pp-swap:hover { border-color: var(--hair-strong); }
.pp-swap.is-on { background: var(--danger-soft); border-color: var(--danger); }
.pp-swap-word { font-size: 15.5px; font-weight: 600; color: var(--ink); }
.pp-swap.is-on .pp-swap-word { text-decoration: line-through; text-decoration-color: var(--danger); color: var(--ink-soft); }
.pp-swap-arrow { font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.pp-swap.is-on .pp-swap-arrow { color: var(--danger); }

.pp-flip {
  appearance: none;
  width: 100%;
  text-align: left;
  background: var(--inset);
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 18px 20px;
  margin-bottom: 14px;
  cursor: pointer;
  font-family: var(--font-display);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.pp-flip:hover { border-color: var(--hair-strong); }
.pp-flip-front, .pp-flip-back { font-size: 21px; font-style: italic; line-height: 1.3; }
.pp-flip-front { color: var(--ink); }
.pp-flip-back { display: none; color: var(--danger); }
.pp-flip.is-flipped { background: var(--danger-soft); border-color: var(--danger); }
.pp-flip.is-flipped .pp-flip-front { display: none; }
.pp-flip.is-flipped .pp-flip-back { display: block; }
.pp-flip-hint { font-family: var(--font-mono); font-style: normal; font-size: 11px; letter-spacing: 0.06em; color: var(--muted); margin-top: 4px; }

.approach-card { border-left-width: 4px; }
.approach-card[data-tone="ai"] { border-left-color: var(--ai); }

/* ---------- next / link cards ---------- */

.next-link {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--inset);
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 12px;
  transition: border-color 0.15s ease;
}
.next-link:first-of-type { margin-top: 4px; }
.next-link:hover { border-color: var(--ink); }
.next-link-kicker {
  margin: 0 0 4px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.next-link-label { margin: 0; font-size: 15px; font-weight: 600; color: var(--ink); }

/* ---------- colophon ---------- */

.colophon {
  border-top: 1px solid var(--hair-strong);
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 18px 44px 26px 44px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.colophon p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 04 · Your Purpose: the activity on the teacher's own course ---------- */

.pp-fields { display: grid; grid-template-columns: 3fr 2fr; gap: 12px 14px; margin: 14px 0 4px 0; }
.pp-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.pp-field > span,
.pp-subhead,
.pp-mixline-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.pp-field input,
.pp-field select,
.pp-textarea {
  box-sizing: border-box;
  width: 100%;
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--hair-strong);
  border-radius: 6px;
  padding: 9px 11px;
}
.pp-textarea { display: block; margin-top: 8px; resize: vertical; line-height: 1.5; }
.pp-field input:focus,
.pp-field select:focus,
.pp-textarea:focus { outline: 2px solid var(--c-qual); outline-offset: 1px; border-color: var(--c-qual); }
.pp-sentence { font-family: var(--font-display); font-size: 19px; line-height: 1.45; }
.pp-small { margin: 8px 0 0 0; font-size: 14px; line-height: 1.5; color: var(--muted); }
.pp-subhead { margin: 16px 0 8px 0; }

.pp-mixline { margin: 12px 0 0 0; padding: 10px 12px; background: var(--inset); border-radius: 6px; }
.pp-mixline-label { margin: 0 0 4px 0; }
.pp-mixline-val { margin: 0; display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 14px; font-weight: 600; color: var(--ink); }

.pp-options { display: flex; flex-direction: column; gap: 6px; }
.pp-option {
  appearance: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
  font-family: var(--font-ui);
  background: var(--card);
  border: 1px solid var(--hair);
  border-left: 4px solid var(--hair-strong);
  border-radius: 6px;
  padding: 10px 12px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.pp-option:hover { border-color: var(--hair-strong); }
.pp-option.is-on { background: var(--inset); border-color: var(--ink); border-left-color: var(--c-subj); }
.pp-option-name { font-size: 14px; font-weight: 600; color: var(--ink); }
.pp-option-body { font-size: 15px; line-height: 1.5; color: var(--ink-soft); }

/* What carries the learning: Klafki's five questions, asked of a topic or a problem */
.pp-klafki { margin: 18px 0 6px 0; padding: 16px 18px 14px; background: var(--inset); border-radius: 6px; }
.pp-klafki > .pp-subhead { margin-top: 0; }
.pp-klafki-label { margin: 12px 0 6px 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.pp-klafki-lenses { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pp-klafki .pp-option { background: transparent; }
.pp-klafki .pp-option.is-on { background: var(--card); box-shadow: 0 1px 0 var(--hair); }
.pp-klafki-list { list-style: none; counter-reset: kq; margin: 14px 0 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.pp-klafki-list li { counter-increment: kq; position: relative; padding: 10px 12px 10px 40px; background: var(--card); border-radius: 6px; }
.pp-klafki-list li::before { content: counter(kq); position: absolute; left: 14px; top: 10px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.pp-klafki-name { margin: 0; font-size: 14.5px; font-weight: 600; color: var(--ink); }
.pp-klafki-q { margin: 3px 0 0 0; font-size: 15px; line-height: 1.55; color: var(--ink-soft); }
.pp-klafki-ex { margin: 6px 0 0 0; padding-left: 10px; border-left: 2px solid var(--c-subj); font-size: 15px; line-height: 1.5; color: var(--ink); }
.pp-klafki[data-klens="topic"] [data-klens-ex="problem"],
.pp-klafki[data-klens="problem"] [data-klens-ex="topic"] { display: none; }
@media (max-width: 560px) { .pp-klafki-lenses { grid-template-columns: 1fr; } .pp-klafki { padding: 14px 12px 12px; } }

.pp-checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 5px; }
.pp-checks li { position: relative; padding-left: 20px; font-size: 15px; line-height: 1.5; color: var(--ink-soft); }
.pp-checks li::before { content: ""; position: absolute; left: 2px; top: 6px; width: 8px; height: 8px; border-radius: 50%; background: var(--hair-strong); }
.pp-checks li.is-ok::before { background: var(--ok); }
.pp-checks li.is-warn::before { background: var(--warn); }
.pp-checks li.is-none { color: var(--muted); }
.pp-checks-plain li::before { background: var(--ai); }

.pp-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; }
.pp-btn {
  appearance: none;
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--hair-strong);
  border-radius: 6px;
  padding: 9px 14px;
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.pp-btn:hover { border-color: var(--ink); }
.pp-btn-primary { background: var(--ink); color: var(--card); border-color: var(--ink); }
.pp-btn-primary:hover { background: #3a3e33; }
.pp-btn.is-done { background: var(--ok); border-color: var(--ok); color: var(--card); }

.pp-privacy { color: var(--ai); }
.pp-aiprompt {
  margin: 12px 0 0 0;
  max-height: 320px;
  overflow: auto;
  background: #fff;
  border: 1px solid var(--hair-strong);
  border-radius: 6px;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  white-space: pre-wrap;
  word-wrap: break-word;
}
.sim-block > .pp-actions { margin-top: 0; }

/* ---------- the stage shows one picture per tab (rings · two circles · three circles) ---------- */

.pp-view { display: none; }
.stage[data-view="rings"] .pp-view-rings,
.stage[data-view="two"] .pp-view-two,
.stage[data-view="three"] .pp-view-three { display: block; }

/* 01 · the reach rings */
.pr-ring { cursor: pointer; }
.pr-ring-fill { stroke: var(--hair-strong); stroke-width: 1.2; transition: fill 0.25s ease, stroke 0.25s ease; }
.pr-ring-world .pr-ring-fill { fill: #f8f4ea; }
.pr-ring-place .pr-ring-fill { fill: #f2ecdd; }
.pr-ring-programme .pr-ring-fill { fill: #ebe3d0; }
.pr-ring-course .pr-ring-fill { fill: #e3d9c2; }
.pr-ring:hover .pr-ring-fill { stroke: var(--ink-soft); }
.pr-ring.is-selected .pr-ring-fill { stroke: var(--ink); stroke-width: 2.4; }
.pr-ring:focus { outline: none; }
.pr-ring:focus-visible .pr-ring-fill { stroke: var(--ink); stroke-width: 2.4; }
.pr-ring-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 16px;
  fill: var(--ink-soft);
  pointer-events: none;
}
.pr-ring.is-selected .pr-ring-label { fill: var(--ink); font-weight: 600; }
.pr-ring-snip {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 12.5px;
  fill: var(--ink);
  pointer-events: none;
}

/* 02–03 · what you value and what you are asked */
.pt-fill { opacity: 0.14; transition: opacity 0.3s ease; }
.pt-ring { fill: none; stroke-width: 1.6; opacity: 0.6; transition: opacity 0.3s ease, stroke-width 0.3s ease; }
.pt-chosen .pt-fill { fill: var(--c-chosen); }
.pt-chosen .pt-ring { stroke: var(--c-chosen); }
.pt-given .pt-fill { fill: var(--c-given); }
.pt-given .pt-ring { stroke: var(--c-given); }
.pt-label { font-family: var(--font-display); font-weight: 500; font-size: 19px; transition: opacity 0.3s ease; }
.pt-label-chosen { fill: var(--text-ochre); }
.pt-label-given { fill: var(--c-given); }
.pt-tag, .pt-apart, .pt-overlap {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  fill: var(--ink-soft);   /* on the circle tints */
  transition: opacity 0.3s ease;
}
.pt-overlap { font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.1em; }
.pt-apart { opacity: 0; }
.pt-choice { font-family: var(--font-display); font-style: italic; font-size: 17px; fill: var(--ink); }
/* 02: the given circle in front */
.pp-view-two.is-given .pt-given .pt-fill { opacity: 0.26; }
.pp-view-two.is-given .pt-given .pt-ring { stroke-width: 2.6; opacity: 0.9; }
.pp-view-two.is-given .pt-chosen,
.pp-view-two.is-given .pt-label-chosen { fill: var(--muted); }
/* 03: both circles, and where they part */
.pp-view-two.is-tension .pt-ring { stroke-width: 2.2; opacity: 0.85; }
.pp-view-two.is-tension .pt-apart { opacity: 1; fill: var(--ink-soft); }
.pp-view-two.is-tension .pt-overlap { fill: var(--ink-soft); }

/* ---------- 01–03 · prompts, rings, inspiration, the two columns, the choice ---------- */

.pp-prompt-block { margin-top: 16px; }
.pp-prompt-block:first-child { margin-top: 0; }
.pp-q { margin: 0; font-size: 16.5px; font-weight: 600; line-height: 1.45; color: var(--ink); }
.pp-q-hint { margin: 3px 0 0 0; font-size: 15px; line-height: 1.5; color: var(--muted); }

.pr-picker { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 2px 0; }
.pr-pick {
  appearance: none;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  background: #fff;
  border: 1px solid var(--hair-strong);
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
}
.pr-pick:hover { border-color: var(--ink-soft); }
.pr-pick.is-written::after { content: " ●"; color: var(--text-ochre); font-size: 10px; }
.pr-pick.is-active { background: var(--ink); border-color: var(--ink); color: var(--card); }

.pp-more { border-top: 1px solid var(--hair); padding: 12px 0 2px 0; }
.pp-more:last-child { padding-bottom: 0; }
.pp-more summary {
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 10px;
  list-style: none;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
}
/* the course's fold marker (as in assessment/ and learningtheory/): + / − inside the column */
.pp-more summary::-webkit-details-marker { display: none; }
.pp-more summary::before {
  content: "+";
  flex: none;
  width: 12px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--muted);
}
.pp-more[open] summary::before { content: "\2212"; }
.pp-more summary:hover::before { color: var(--ink); }
.pp-more summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.pp-more[open] summary { margin-bottom: 8px; }
.pp-more-q { margin: 8px 0 0 0; font-family: var(--font-display); font-style: italic; font-size: 16px; line-height: 1.5; color: var(--ink); }

.pp-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.pp-col { background: #fff; border: 1px solid var(--hair); border-top: 3px solid var(--hair-strong); border-radius: 6px; padding: 12px 14px; min-width: 0; }
.pp-col-chosen { border-top-color: var(--c-chosen); }
.pp-col-given { border-top-color: var(--c-given); }
.pp-col-head { margin: 0 0 8px 0; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); }
.pp-col-item { margin-top: 10px; }
.pp-col-item:first-of-type { margin-top: 0; }
.pp-col-label { margin: 0; font-size: 12.5px; line-height: 1.4; color: var(--muted); }
.pp-col-text { margin: 2px 0 0 0; font-size: 15px; line-height: 1.5; color: var(--ink); overflow-wrap: anywhere; }
.pp-col-empty { margin: 0; font-size: 15px; font-style: italic; color: var(--muted); }

.pp-recap { margin: 0; font-family: var(--font-display); font-size: 16px; line-height: 1.5; color: var(--ink); }
.pp-recap + .pp-recap { margin-top: 6px; }
.pp-recap-label { display: block; font-family: var(--font-ui); font-size: 12px; color: var(--muted); }
.pp-recap-empty { font-style: italic; color: var(--muted); font-size: 15px; }
.pp-rings-recap { margin: 0 0 4px 0; }
.pp-mixline + .pp-mixline { margin-top: 8px; }
.pp-teacher-note { color: var(--ink-soft); border-left: 2px solid var(--c-soc); padding-left: 10px; }

/* 04 · the "purpose first" arguments fold */
.pp-fold { padding: 0; }
.pp-fold-head { display: flex; flex-direction: column; gap: 2px; padding: 18px 28px; cursor: pointer; list-style: none; }
.pp-fold-head::-webkit-details-marker { display: none; }
.pp-fold-head .detail-kicker { margin: 0; }
.pp-fold-head .detail-title { margin: 0; }
.pp-fold-head::after { content: "▾"; align-self: flex-end; margin-top: -24px; color: var(--muted); transition: transform 0.2s ease; }
.pp-fold[open] .pp-fold-head::after { transform: rotate(180deg); }
.pp-fold-body { padding: 0 28px 24px 28px; }
.pp-questions-head .detail-body { margin-bottom: 0; }

/* ---------- responsive ---------- */

@media (max-width: 1020px) {
  .layout { grid-template-columns: 1fr; gap: 24px; padding: 24px 24px 48px 24px; }
  .stage { position: static; max-width: 540px; margin: 0 auto; }
  .masthead { padding: 22px 24px 0 24px; }
  .lens-tabs { overflow-x: auto; width: 100%; }
  .colophon { padding: 16px 24px 22px 24px; }
}

@media (max-width: 560px) {
  .masthead-title { font-size: 27px; }
  .lens-tab { padding: 10px 10px 12px 10px; }
  .lens-tab-name { font-size: 14px; }
  .domain-picker { grid-template-columns: 1fr; }
  .pp-prompt-grid { grid-template-columns: 1fr; }
  .pp-fields { grid-template-columns: 1fr; }
  .pp-cols { grid-template-columns: 1fr; }
  .pp-fold-head, .pp-fold-body { padding-left: 20px; padding-right: 20px; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}