/* Charte des films : fond pierre sombre, or pour l'essentiel, cyan pour les erreurs. Thème sombre unique, assumé. */
:root {
  --ink: #0E0C0B; --stone: #18191A; --line: #3A3C41; --cream: #F4EBDD; --muted: #B9AE9C;
  --gold: #F2B84B; --cyan: #38F2FF;
  --display: "Outfit", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", Consolas, ui-monospace, monospace;
  --serif: "EB Garamond", Garamond, Georgia, serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { background: var(--ink); color: var(--cream); margin: 0; }
body { font-family: var(--display); font-size: 17px; line-height: 1.5; padding-inline: 16px; padding-block: 20px 48px; }
a { color: var(--gold); }
.wrap { max-width: 1040px; margin: 0 auto; display: grid; gap: 22px; }
.hud { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; font-family: var(--mono); font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.hud a { color: var(--cream); text-decoration: none; } .hud a:hover { color: var(--gold); }
.hud b { color: var(--gold); font-weight: 600; }
h1 { font-weight: 900; font-size: clamp(34px, 6vw, 58px); line-height: 0.98; letter-spacing: -0.035em; margin: 4px 0 0; text-wrap: balance; }
h1 span { color: var(--gold); }
h2 { font-weight: 800; font-size: clamp(22px, 3vw, 28px); letter-spacing: -0.02em; margin: 0; text-wrap: balance; }
.intro { color: var(--muted); max-width: 64ch; margin: 0; }
.label { font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }

/* Sommaire */
.partie { display: grid; gap: 12px; }
.partie-tete { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; border-top: 1px solid var(--line); padding-top: 18px; }
.chapitres { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 12px; }
.chap { display: grid; grid-template-rows: auto auto 1fr auto; gap: 6px; border: 1px solid var(--line); background: var(--stone); padding: 14px 16px 16px; min-width: 0; }
.chap .n { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; color: var(--gold); }
.chap h3 { font-weight: 800; font-size: 19px; line-height: 1.15; margin: 0; }
.chap h3 a { color: var(--cream); text-decoration: none; } .chap h3 a:hover { color: var(--gold); }
.chap .periode { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.acces { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.acces a, .acces span { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; padding: 5px 9px; border: 1px solid var(--line); text-decoration: none; color: var(--cream); }
.acces a:hover { border-color: var(--gold); color: var(--gold); }
.acces span { color: var(--muted); border-style: dashed; }
.chap.film { border-color: var(--gold); }

/* Page de chapitre */
.videos { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 16px; }
.video { display: grid; gap: 8px; min-width: 0; }
.video video, .video iframe { width: 100%; aspect-ratio: 16 / 9; height: auto; background: #000; border: 1px solid var(--line); display: block; max-width: 100%; }
.bientot { aspect-ratio: 16 / 9; display: grid; place-items: center; border: 1px dashed var(--line); color: var(--muted); font-family: var(--mono); font-size: 13px; text-align: center; padding: 16px; }
.bouton { justify-self: start; display: inline-block; font: 800 18px var(--display); text-transform: lowercase; color: var(--ink); background: var(--gold); padding: 12px 22px; text-decoration: none; }
.bouton:focus-visible { outline: 3px solid var(--cream); outline-offset: 3px; }
.boutons { display: flex; flex-wrap: wrap; gap: 12px; }
.bouton.second { background: transparent; color: var(--gold); border: 2px solid var(--gold); padding: 10px 20px; }

/* Manuel (copie de cours.thlang.net) */
.manuel { max-width: 72ch; display: grid; gap: 14px; }
.manuel h2, .manuel h3, .manuel h4 { margin: 18px 0 0; text-wrap: balance; }
.manuel h3 { font-size: 22px; } .manuel h4 { font-size: 19px; color: var(--gold); }
.manuel p, .manuel ul, .manuel ol { margin: 0; }
.manuel li { margin: 4px 0; }
.manuel figure { margin: 6px 0 0; }
.manuel img { max-width: 100%; height: auto; display: block; border: 1px solid var(--line); }
.manuel em { color: var(--muted); }
.manuel hr { border: 0; border-top: 1px solid var(--line); margin: 10px 0; width: 100%; }
.manuel blockquote { margin: 0; border-left: 4px solid var(--cyan); padding-left: 14px; }
.manuel .table { overflow-x: auto; }
.manuel table { border-collapse: collapse; font-size: 15px; }
.manuel th, .manuel td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
.manuel th { color: var(--gold); }
.colonnes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 22px; }
.mots { margin: 0; display: grid; gap: 10px; }
.mots dt { font-weight: 800; color: var(--gold); }
.mots dd { margin: 0; color: var(--cream); }
.frise { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.frise li { display: grid; grid-template-columns: 9.5em minmax(0, 1fr); gap: 12px; border-top: 1px solid var(--line); padding-top: 8px; }
.frise b { font-family: var(--mono); color: var(--gold); font-weight: 600; font-variant-numeric: tabular-nums; }
.retenir { border-left: 4px solid var(--gold); padding: 6px 0 6px 16px; font-weight: 700; font-size: 20px; max-width: 60ch; margin: 0; }
.cles { display: grid; gap: 10px; max-width: 72ch; }
.cles ol { margin: 0; padding-left: 1.4em; display: grid; gap: 10px; }
.cles li::marker { color: var(--gold); font-family: var(--mono); font-weight: 600; }
.cles li b { color: var(--gold); }
.cles em { color: var(--muted); }
.cles + .cles h2 { font-size: clamp(18px, 2.4vw, 22px); color: var(--muted); }
footer { font-size: 12.5px; color: var(--muted); line-height: 1.5; border-top: 1px solid var(--line); padding-top: 12px; }

/* Défi */
.opts { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.opts label { display: inline-flex; gap: 8px; align-items: center; cursor: pointer; }
.gauge { display: flex; align-items: center; gap: 10px; }
.bar { width: 160px; height: 10px; border: 1px solid var(--line); position: relative; }
.bar i { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--gold); transition: width 0.5s ease; }
.pct { color: var(--gold); font-weight: 600; min-width: 4ch; text-align: right; font-variant-numeric: tabular-nums; }
.card { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); border: 1px solid var(--line); background: var(--stone); }
@media (max-width: 760px) { .card { grid-template-columns: 1fr; } }
.card { align-items: start; }
.media { position: relative; background: var(--ink); aspect-ratio: 4 / 3; max-width: 100%; display: grid; place-items: center; overflow: hidden; }
.media img { width: 100%; height: 100%; object-fit: cover; display: block; max-width: 100%; }
.media.vide span { font-weight: 900; font-size: 120px; color: var(--gold); opacity: 0.8; }
.media .credit { position: absolute; left: 8px; bottom: 6px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; color: var(--cream); background: rgba(14,12,11,0.7); padding: 2px 6px; }
.body { padding: 22px 22px 24px; display: grid; gap: 14px; align-content: start; min-width: 0; }
.num { font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); display: flex; justify-content: space-between; gap: 12px; }
.q { font-weight: 800; font-size: clamp(22px, 3.2vw, 30px); line-height: 1.1; letter-spacing: -0.02em; margin: 0; text-wrap: balance; }
.answers { display: grid; gap: 10px; }
.ans { font: 700 19px/1.2 var(--display); text-align: left; color: var(--cream); background: var(--ink); border: 2px solid var(--line); padding: 14px 16px; cursor: pointer; transition: border-color 0.15s, transform 0.15s; }
.ans:hover:not(:disabled) { border-color: var(--cream); transform: translateX(3px); }
.ans:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.ans.ok { background: var(--gold); color: var(--ink); border-color: var(--gold); }
.ans.ko { border-color: var(--cyan); color: var(--cyan); }
.ans:disabled { cursor: default; }
.feedback { border-left: 4px solid var(--gold); padding: 4px 0 4px 14px; display: grid; gap: 6px; }
.feedback.ko { border-left-color: var(--cyan); }
.verdict { font-family: var(--mono); font-size: 13px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.feedback.ko .verdict { color: var(--cyan); }
.expl { margin: 0; max-width: 60ch; }
.next, .again { justify-self: start; font: 800 18px var(--display); text-transform: lowercase; color: var(--ink); background: var(--gold); border: 0; padding: 12px 22px; cursor: pointer; }
.next:focus-visible, .again:focus-visible { outline: 3px solid var(--cream); outline-offset: 3px; }
.timer { font-family: var(--mono); font-weight: 600; font-variant-numeric: tabular-nums; }
.timer.low { color: var(--cyan); }
.end { border: 1px solid var(--line); background: var(--stone); padding: 26px 22px; display: grid; gap: 16px; }
.score { font-weight: 900; font-size: clamp(56px, 12vw, 120px); line-height: 0.9; letter-spacing: -0.05em; color: var(--gold); font-variant-numeric: tabular-nums; }
.grade { font-family: var(--mono); font-size: 16px; letter-spacing: 0.16em; text-transform: uppercase; }
.grade b { color: var(--gold); }
.recap { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.recap li { display: grid; grid-template-columns: 2.2em minmax(0, 1fr); gap: 10px; align-items: baseline; border-top: 1px solid var(--line); padding-top: 8px; }
.recap .r { font-family: var(--mono); font-weight: 600; }
.recap .r.ok { color: var(--gold); } .recap .r.ko { color: var(--cyan); }
.secret { font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--muted); margin: 0; }
@media (prefers-reduced-motion: reduce) { .ans, .bar i { transition: none; } }