:root {
  --bg: #f4f6f4;
  --bg-2: #e4ebe8;
  --ink: #1d211f;
  --forest: #202a24;
  --muted: #5f6a66;
  --ember: #b96545;
  --ember-deep: #8b4f3c;
  --sage: #7e9b8f;
  --cream: #fbfcf8;
  --line: rgba(29, 33, 31, 0.14);
  --shadow: 0 18px 44px rgba(32, 42, 36, 0.10);
  --soft-shadow: 0 10px 24px rgba(32, 42, 36, 0.10);
  color-scheme: light;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  color: var(--ink);
  font-family: Inter, system-ui, sans-serif;
}

button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid var(--ember); outline-offset: 3px; }

.lesson-shell { width: min(1220px, calc(100% - 32px)); margin: 0 auto; padding: 22px 0 44px; }
.topnav { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--forest); text-decoration: none; font-weight: 800; letter-spacing: 0; }
.brand span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 8px; background: var(--forest); color: var(--bg); }
.nav-meta { display: flex; align-items: center; gap: 12px; font-family: "JetBrains Mono", monospace; font-size: 0.82rem; color: var(--muted); }
.nav-meta button, .ghost { border: 1px solid var(--line); background: rgba(255,255,255,0.56); color: var(--forest); border-radius: 8px; padding: 9px 13px; cursor: pointer; }

.lesson-hero { max-width: 940px; margin-bottom: 28px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 10px; font-family: "JetBrains Mono", monospace; text-transform: uppercase; letter-spacing: 0.11em; font-size: 0.76rem; color: var(--ember-deep); font-weight: 700; }
h1, h2 { font-family: Fraunces, Georgia, serif; letter-spacing: 0; line-height: 0.98; margin: 0; }
h1 { font-size: clamp(2.75rem, 6vw, 4.85rem); max-width: 880px; }
h2 { font-size: clamp(2rem, 4.5vw, 3.8rem); }
h3 { margin: 0 0 14px; font-size: 1rem; }
.lesson-hero p:last-child { margin: 18px 0 0; max-width: 720px; font-size: clamp(1rem, 1.4vw, 1.14rem); color: var(--muted); line-height: 1.62; }

.lesson-grid { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 18px; align-items: start; }
.map-card, .scene-card { background: rgba(251, 252, 248, 0.9); border: 1px solid rgba(29,33,31,0.13); border-radius: 8px; box-shadow: var(--shadow); }
.map-card { padding: 16px; position: sticky; top: 18px; }
.scene-card { padding: clamp(24px, 4vw, 42px); min-height: 620px; }
.pressure { margin: 18px 0 0; max-width: 66ch; color: var(--forest); font-size: 1.08rem; line-height: 1.58; font-weight: 650; }
.narrative { color: var(--muted); line-height: 1.72; font-size: 1.06rem; max-width: 68ch; }
.scene-comic { width: min(100%, 760px); aspect-ratio: 16 / 9; margin: 22px 0 20px; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #e7eeeb; box-shadow: var(--soft-shadow); }
.scene-comic[hidden] { display: none; }
.scene-comic img { width: 100%; height: 100%; display: block; object-fit: cover; }
.dialogue { display: grid; gap: 10px; margin: 18px 0 10px; max-width: 720px; }
.dialogue-line { display: grid; grid-template-columns: 90px 1fr; gap: 12px; align-items: start; }
.dialogue-line span { padding-top: 10px; font-family: "JetBrains Mono", monospace; font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.dialogue-line p { margin: 0; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.58); line-height: 1.5; }
.danish-line { display: inline-block; margin: 14px 0 24px; padding: 14px 16px; border-radius: 8px; background: var(--forest); color: var(--cream); font-family: "JetBrains Mono", monospace; box-shadow: var(--soft-shadow); }
.notice { display: grid; grid-template-columns: 82px 1fr; gap: 14px; margin: 2px 0 20px; padding: 14px 16px; border-left: 3px solid var(--sage); background: rgba(126,155,143,.13); border-radius: 8px; }
.notice strong { font-family: "JetBrains Mono", monospace; text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; color: var(--ember-deep); }
.notice span { color: var(--forest); line-height: 1.55; }
.repair-focus { display: grid; grid-template-columns: 140px 1fr; gap: 14px; margin: 18px 0 20px; padding: 14px 16px; border-left: 3px solid var(--ember); background: rgba(185,101,69,.12); border-radius: 8px; }
.repair-focus strong { font-family: "JetBrains Mono", monospace; text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; color: var(--ember-deep); }
.repair-focus span { color: var(--forest); line-height: 1.55; }
.repair-focus b { font-weight: 800; }
.plan-context-card { margin: 0 0 20px; padding: 16px; max-width: 720px; border: 1px solid var(--line); border-left: 4px solid var(--ember); border-radius: 8px; background: rgba(185,101,69,.10); }
.plan-context-card.completed { border-left-color: var(--sage); background: rgba(126,155,143,.14); }
.plan-context-card .eyebrow { margin-bottom: 8px; }
.plan-context-card h3 { margin: 0 0 8px; font-family: Fraunces, Georgia, serif; font-size: clamp(1.25rem, 2.1vw, 1.6rem); line-height: 1.12; letter-spacing: 0; color: var(--forest); }
.plan-context-card p { margin: 0; color: var(--muted); line-height: 1.58; }
.plan-context-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.plan-context-meta span { padding: 4px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--ember-deep); font-family: "JetBrains Mono", monospace; font-size: .72rem; }
.plan-context-link { display: inline-flex; margin-top: 12px; color: var(--forest); font-weight: 800; text-decoration-color: var(--ember); text-underline-offset: 4px; }
.carry-forward { margin: 16px 0 0; color: var(--muted); font-size: .96rem; line-height: 1.55; }
.next-step-card { margin: 24px 0 0; padding: 18px; max-width: 720px; border: 1px solid var(--line); border-left: 4px solid var(--sage); border-radius: 8px; background: rgba(126,155,143,.13); }
.next-step-card.repair { border-left-color: var(--ember); background: rgba(185,101,69,.10); }
.next-step-card .eyebrow { margin-bottom: 8px; }
.next-step-card h3 { margin: 0 0 8px; font-family: Fraunces, Georgia, serif; font-size: clamp(1.25rem, 2.1vw, 1.6rem); line-height: 1.12; letter-spacing: 0; color: var(--forest); }
.next-step-card p { margin: 0; color: var(--muted); line-height: 1.58; }
.next-step-card .next-step-meta { margin-top: 10px; font-family: "JetBrains Mono", monospace; font-size: .78rem; color: var(--ember-deep); }
.next-step-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.next-step-card .link-button { text-decoration: none; }
.next-step-card .ghost { display: inline-flex; align-items: center; justify-content: center; }
.repair-closure { margin: 24px 0 0; padding: 18px; max-width: 720px; border: 1px solid var(--line); border-left: 4px solid var(--sage); border-radius: 8px; background: rgba(126,155,143,.13); }
.repair-closure.open { border-left-color: var(--ember); background: rgba(185,101,69,.10); }
.repair-closure h3 { margin: 0 0 8px; font-family: Fraunces, Georgia, serif; font-size: clamp(1.25rem, 2.1vw, 1.6rem); line-height: 1.12; letter-spacing: 0; color: var(--forest); }
.repair-closure p { margin: 0; color: var(--muted); line-height: 1.58; }
.repair-closure-action { margin-top: 10px !important; font-family: "JetBrains Mono", monospace; font-size: .78rem; color: var(--ember-deep) !important; }

.map-illustration { position: relative; aspect-ratio: 900 / 420; margin: 8px 0 18px; border-radius: 8px; overflow: hidden; background: #e7eeeb; border: 1px solid var(--line); }
.map-illustration img { width: 100%; height: 100%; display: block; object-fit: cover; }
.route-list { display: grid; gap: 10px; }
.route-step { width: 100%; text-align: left; display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,0.58); color: var(--muted); cursor: pointer; }
.route-step span { font-family: "JetBrains Mono", monospace; color: var(--ember-deep); }
.route-step strong { color: inherit; }
.route-step.active { background: var(--forest); color: var(--cream); border-color: var(--forest); }
.route-step.done:not(.active) { background: rgba(143, 168, 139, 0.22); color: var(--forest); }

.variables-display { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.var-tag { font-family: "JetBrains Mono", monospace; font-size: 0.72rem; padding: 6px 10px; border-radius: 8px; border: 1px solid var(--line); background: rgba(255,255,255,0.58); color: var(--muted); transition: all 0.2s ease; }
.var-tag.high { border-color: var(--ember); background: rgba(199,114,50,0.12); color: var(--ember-deep); }
.var-tag.low { border-color: var(--sage); background: rgba(126,155,143,0.12); color: var(--forest); }
.var-tag.neutral { border-color: var(--line); }

.exercise { margin-top: 20px; padding: 20px; background: rgba(255,255,255,0.58); border: 1px solid var(--line); border-radius: 8px; }
.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.choice-card, .sign-card, .meaning-card { border: 1.5px solid rgba(32,42,36,0.30); background: var(--cream); color: var(--forest); border-radius: 8px; padding: 18px; cursor: pointer; text-align: left; box-shadow: 0 10px 24px rgba(32,42,36,0.09); transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease; }
.choice-card:hover, .sign-card:hover, .meaning-card:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(32,42,36,0.14); border-color: rgba(32,42,36,0.56); }
.choice-card strong { display: block; font-family: "JetBrains Mono", monospace; font-size: 1.4rem; margin-bottom: 7px; }
.choice-card span { color: var(--muted); }
.choice-card.correct, .meaning-card.matched { background: rgba(143,168,139,0.28); border-color: var(--sage); }
.choice-card.wrong { background: rgba(199,114,50,0.14); border-color: var(--ember); }

.field-label { display: block; margin-bottom: 8px; font-weight: 700; }
.text-input, .inline-input { width: min(100%, 520px); border: 2px solid var(--forest); border-radius: 8px; background: var(--cream); padding: 15px 16px; color: var(--forest); }
.inline-input { width: 190px; margin-left: 8px; }
.b2-input { width: 240px; }
.small { margin-top: 12px; }
.primary, .ghost, .link-button { min-height: 44px; }
.primary { border: 0; border-radius: 8px; padding: 12px 18px; color: var(--cream); background: var(--forest); font-weight: 800; cursor: pointer; box-shadow: 0 12px 24px rgba(32,42,36,0.16); text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.primary:hover { transform: translate(-1px, -1px); }

.match-board { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.match-board > div { display: grid; gap: 12px; }
.sign-card { font-family: "JetBrains Mono", monospace; text-transform: uppercase; letter-spacing: .08em; text-align: center; }
.sign-card.selected { background: var(--forest); color: var(--cream); }
.meaning-card { text-align: center; }
.sentence { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-family: "JetBrains Mono", monospace; font-size: 1.1rem; }
.feedback { display: none; margin-top: 16px; padding: 14px 16px; border-radius: 8px; line-height: 1.5; }
.feedback.show { display: block; }
.feedback.ok { background: rgba(143,168,139,0.22); border: 1px solid rgba(73,99,70,.4); }
.feedback.warn { background: rgba(199,114,50,0.14); border: 1px solid rgba(157,75,32,.4); }
.lesson-actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 24px; }
button:disabled { opacity: .4; cursor: not-allowed; }

.flagship-chain { display: grid; gap: 16px; }
.flagship-proof { display: grid; gap: 10px; padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: rgba(126,155,143,.12); }
.flagship-proof p { display: grid; grid-template-columns: 110px 1fr; gap: 10px; margin: 0; line-height: 1.5; }
.flagship-proof strong,
.flagship-channel span,
.flagship-channel-label,
.flagship-ladder span { font-family: "JetBrains Mono", monospace; text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; color: var(--ember-deep); }
.flagship-proof span { color: var(--forest); }
.flagship-channel-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.flagship-channel { min-width: 0; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.64); }
.flagship-channel strong { display: block; margin: 8px 0; font-family: "JetBrains Mono", monospace; font-size: .86rem; line-height: 1.35; color: var(--forest); overflow-wrap: anywhere; }
.flagship-channel p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.42; }
.flagship-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.flagship-option small { display: block; margin-top: 8px; color: var(--muted); line-height: 1.4; }
.flagship-consequence { padding: 16px; border: 1px solid var(--line); border-left: 4px solid var(--sage); border-radius: 8px; background: rgba(126,155,143,.13); }
.flagship-consequence.warn { border-left-color: var(--ember); background: rgba(185,101,69,.10); }
.flagship-consequence .eyebrow { margin-bottom: 8px; }
.flagship-consequence h4 { margin: 0 0 8px; font-size: 1.02rem; color: var(--forest); }
.flagship-consequence p { margin: 0; color: var(--muted); line-height: 1.55; }
.flagship-ladder { display: grid; gap: 8px; margin: 14px 0 0; padding: 0; list-style: none; }
.flagship-ladder li { display: grid; gap: 5px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.64); }
.flagship-ladder strong { font-family: "JetBrains Mono", monospace; color: var(--forest); line-height: 1.4; overflow-wrap: anywhere; }
.flagship-reasons { display: grid; gap: 8px; margin-top: 14px; }
.flagship-reason { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; background: var(--cream); color: var(--forest); text-align: left; cursor: pointer; }
.flagship-reason.correct { background: rgba(143,168,139,0.28); border-color: var(--sage); }
.flagship-reason.wrong { background: rgba(199,114,50,0.14); border-color: var(--ember); }

/* Variable summary in ending */
.variable-summary { margin-top: 24px; padding: 18px; background: rgba(255,255,255,0.48); border: 1px solid var(--line); border-radius: 8px; }
.variable-summary .eyebrow { margin-bottom: 14px; }
.var-bar { display: flex; align-items: center; gap: 12px; margin: 10px 0; font-family: "JetBrains Mono", monospace; font-size: 0.85rem; }
.var-label { min-width: 110px; color: var(--muted); font-size: 0.78rem; }
.var-value { min-width: 40px; font-weight: 700; color: var(--forest); }
.var-desc { color: var(--muted); font-family: Inter, sans-serif; font-size: 0.9rem; }

@media (max-width: 880px) {
  .lesson-shell { width: min(100% - 22px, 680px); padding-top: 18px; }
  .topnav { margin-bottom: 26px; }
  .lesson-hero p:last-child { max-width: 64ch; }
  .lesson-grid { grid-template-columns: 1fr; }
  .map-card { position: static; order: 2; }
  .scene-card { min-height: auto; order: 1; }
  .flagship-channel-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .nav-meta { gap: 8px; }
  .match-board { grid-template-columns: 1fr; }
  .dialogue-line, .notice, .repair-focus { grid-template-columns: 1fr; gap: 6px; }
  .flagship-proof p, .flagship-channel-grid { grid-template-columns: 1fr; }
  .lesson-actions { background: rgba(238,242,240,.92); padding: 10px; border-radius: 8px; }
}