/* ───────────────────────────────────────────
   Arbitrage FIE — palette taken from the piste
   and the scoring apparatus, not from a template.
   bone    piste surface in the FIE figures
   ink     rulebook body text
   blue    the deep blue of the FIE referee plates
   green   / red  the two signal lamps
   yellow  the warning card
   ─────────────────────────────────────────── */
:root{
  --bone:#EDEAE3;
  --bone-2:#E3DFD6;
  --paper:#F7F5F1;
  --ink:#131A24;
  --ink-2:#4A5561;
  --blue:#17376B;
  --blue-2:#2B5296;
  --green:#00874A;
  --green-lamp:#00B159;
  --red:#B81D33;
  --red-lamp:#E0314B;
  --yellow:#F2C230;
  --steel:#A6AEB6;
  --steel-2:#C8CDD2;

  --r:3px;
  --pad:clamp(1.15rem,4.5vw,2.5rem);

  --display:"Archivo",system-ui,sans-serif;
  --body:"Source Serif 4",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bone);
  color:var(--ink);
  font-family:var(--body);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  padding-bottom:env(safe-area-inset-bottom);
}

.screen{
  max-width:44rem;
  margin:0 auto;
  padding:var(--pad);
  padding-top:clamp(1.75rem,7vw,3.5rem);
}
[hidden]{display:none !important}

/* ── type ── */
.eyebrow{
  font-family:var(--mono);
  font-size:.7rem;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--blue-2);
  margin:0 0 .9rem;
}
.display{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(2rem,8vw,3.1rem);
  line-height:1.02;
  letter-spacing:-.022em;
  margin:0;
  color:var(--blue);
}
.section-h{
  font-family:var(--display);
  font-weight:600;
  font-size:.82rem;
  letter-spacing:.09em;
  text-transform:uppercase;
  color:var(--ink-2);
  margin:0 0 .85rem;
}
.lede{color:var(--ink-2);margin:.85rem 0 1.6rem}

/* ── buttons ── */
.btn{
  font-family:var(--display);
  font-weight:600;
  font-size:1rem;
  letter-spacing:.005em;
  border:none;
  border-radius:var(--r);
  padding:.92rem 1.35rem;
  cursor:pointer;
  transition:background .14s ease,transform .14s ease;
}
.btn:focus-visible{outline:2.5px solid var(--blue-2);outline-offset:3px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-lg{width:100%;padding:1.15rem;font-size:1.08rem}
.btn-ghost{
  background:none;color:var(--ink-2);width:100%;
  padding:.9rem;margin-top:.55rem;
  border:1px solid var(--steel-2);
}
.btn-ghost:hover{background:var(--bone-2)}

/* ── gate ── */
.gate{display:flex;align-items:center;min-height:100svh}
.gate-inner{width:100%}
#gate-input{
  width:100%;
  font-family:var(--body);
  font-size:1.05rem;
  padding:.92rem 1rem;
  border:1.5px solid var(--steel);
  border-radius:var(--r);
  background:var(--paper);
  color:var(--ink);
  margin-bottom:.7rem;
}
#gate-input:focus{outline:none;border-color:var(--blue-2);box-shadow:0 0 0 3px rgba(43,82,150,.16)}
#gate-go{width:100%}
.msg{font-size:.9rem;color:var(--red);min-height:1.4em;margin:.7rem 0 0}
.msg.ok{color:var(--green)}

/* ── home ── */
.masthead{margin-bottom:2rem}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1.5px solid var(--ink);
  border-bottom:1px solid var(--steel-2);
  margin-bottom:1.9rem;
}
.stat{padding:.85rem .5rem .95rem;border-right:1px solid var(--steel-2)}
.stat:last-child{border-right:none}
.stat-n{
  display:block;
  font-family:var(--display);
  font-weight:700;
  font-size:1.75rem;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--blue);
}
.stat-l{
  display:block;
  font-family:var(--mono);
  font-size:.62rem;
  letter-spacing:.07em;
  text-transform:uppercase;
  color:var(--ink-2);
  margin-top:.35rem;
}
/* ── weapon chooser ── */
.weapons{margin-bottom:1.9rem}
.weapon-picker{display:flex;gap:.5rem;flex-wrap:wrap}
.wpn{
  flex:1 1 auto;min-width:6.5rem;
  font-family:var(--display);font-weight:600;font-size:.95rem;
  padding:.72rem .9rem;
  background:var(--paper);
  color:var(--ink-2);
  border:1.5px solid var(--steel-2);
  border-radius:var(--r);
  cursor:pointer;
  transition:border-color .13s ease,background .13s ease,color .13s ease;
}
.wpn:hover{border-color:var(--blue-2)}
.wpn:focus-visible{outline:2.5px solid var(--blue-2);outline-offset:2px}
.wpn[aria-pressed="true"]{
  background:var(--blue);border-color:var(--blue);color:#fff;
}
.wpn-n{
  display:block;font-family:var(--mono);font-size:.6rem;
  letter-spacing:.07em;opacity:.72;margin-top:.2rem;font-weight:500;
}
.weapon-note{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--steel);margin:.7rem 0 0;
}

.history{margin-top:2.4rem}
.history ul{list-style:none;margin:0;padding:0}
.history li{
  display:flex;align-items:baseline;gap:.7rem;
  padding:.6rem 0;
  border-bottom:1px solid var(--steel-2);
  font-size:.92rem;
}
.history .h-score{font-family:var(--mono);font-weight:600;font-size:1rem}
.history .pass{color:var(--green)}
.history .fail{color:var(--red)}
.history .h-date{color:var(--ink-2);margin-left:auto;font-size:.82rem}
.sync{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--steel);
  margin-top:2.4rem;
}

/* ───────────────────────────────────────────
   THE PISTE — the signature element.
   20 segments = 20 questions. The broken line
   marks the centre; the solid line after the
   16th marks the pass mark.
   ─────────────────────────────────────────── */
.piste-wrap{margin-bottom:2rem}
.piste{
  display:flex;
  gap:2px;
  height:34px;
  background:var(--steel-2);
  border:1.5px solid var(--ink);
  padding:2px;
  position:relative;
}
.seg{
  flex:1;
  background:var(--paper);
  position:relative;
  transition:background .22s ease;
}
.seg.ok{background:var(--green-lamp)}
.seg.ko{background:var(--red-lamp)}
.seg.now{background:var(--blue);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.62}}
/* centre line — broken, as on a real piste */
.seg[data-i="10"]::before{
  content:"";position:absolute;left:-2px;top:0;bottom:0;width:2px;
  background:repeating-linear-gradient(var(--ink) 0 4px,transparent 4px 8px);
}
/* pass mark after the 16th segment */
.seg[data-i="16"]::after{
  content:"";position:absolute;right:-2px;top:-2px;bottom:-2px;width:2px;
  background:var(--blue);
}
.piste-legend{
  display:flex;align-items:baseline;gap:.28rem;
  margin-top:.55rem;
}
.tally{font-family:var(--mono);font-weight:600;font-size:1.05rem}
.tally-ok{color:var(--green)}
.tally-sep,.tally-l{color:var(--ink-2)}
.tally-l{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.07em;
  text-transform:uppercase;margin-left:.45rem;
}

/* ── question sheet ── */
.sheet{
  background:var(--paper);
  border:1.5px solid var(--ink);
  padding:clamp(1.1rem,4.5vw,1.9rem);
}
.qnum{
  font-family:var(--mono);font-weight:600;font-size:.72rem;
  letter-spacing:.1em;color:var(--blue-2);
  margin:0 0 .8rem;
}
.qnum-of{color:var(--steel);margin-left:.3rem}
.question{
  font-family:var(--body);
  font-weight:600;
  font-size:clamp(1.16rem,4.4vw,1.42rem);
  line-height:1.34;
  margin:0 0 1.5rem;
  letter-spacing:-.005em;
}

.options{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}
.opt{
  display:flex;
  gap:.85rem;
  width:100%;
  text-align:left;
  font-family:var(--body);
  font-size:1rem;
  line-height:1.42;
  color:var(--ink);
  background:var(--bone);
  border:1.5px solid var(--steel-2);
  border-radius:var(--r);
  padding:.85rem 1rem;
  cursor:pointer;
  transition:border-color .13s ease,background .13s ease;
}
.opt:hover:not(:disabled){border-color:var(--blue-2);background:var(--bone-2)}
.opt:focus-visible{outline:2.5px solid var(--blue-2);outline-offset:2px}
.opt:disabled{cursor:default}
.opt-k{
  font-family:var(--mono);font-weight:600;font-size:.82rem;
  color:var(--steel);flex:none;padding-top:.13rem;
}
.opt.ok{border-color:var(--green);background:rgba(0,177,89,.11)}
.opt.ok .opt-k{color:var(--green)}
.opt.ko{border-color:var(--red);background:rgba(224,49,75,.09)}
.opt.ko .opt-k{color:var(--red)}
.opt.dim{opacity:.5}

/* ── verdict + source ── */
.verdict{margin-top:1.5rem;border-top:1.5px solid var(--ink);padding-top:1.15rem}
.verdict-line{
  font-family:var(--display);font-weight:700;font-size:1.02rem;
  letter-spacing:.005em;margin:0 0 .95rem;
}
.verdict-line.ok{color:var(--green)}
.verdict-line.ko{color:var(--red)}
.source{
  background:var(--bone);
  border-left:3px solid var(--blue);
  padding:.9rem 1rem;
  margin-bottom:1.25rem;
}
.source-doc{
  font-family:var(--mono);font-size:.68rem;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-2);margin:0 0 .5rem;
  display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;
}
.art{
  background:var(--blue);color:#fff;
  padding:.16rem .45rem;border-radius:2px;
  letter-spacing:.05em;text-transform:none;
}
.source blockquote{
  margin:0;font-size:.95rem;line-height:1.5;color:var(--ink);
}
#next{width:100%}

/* ── results ── */
.result-head{margin-bottom:1.7rem}
.score{
  font-family:var(--display);font-weight:700;
  font-size:clamp(3.4rem,15vw,5rem);line-height:.95;
  letter-spacing:-.035em;margin:.15rem 0 .5rem;
}
.score.pass{color:var(--green)}
.score.fail{color:var(--red)}
.score-of{font-size:.36em;color:var(--steel);margin-left:.3rem;letter-spacing:0}
.result-line{margin:0;color:var(--ink-2)}
.review{margin-top:2.2rem;margin-bottom:1.9rem}
.review ul{list-style:none;margin:0;padding:0}
.review li{
  border-top:1px solid var(--steel-2);
  padding:.9rem 0;
}
.review li:last-child{border-bottom:1px solid var(--steel-2)}
.rv-q{font-weight:600;margin:0 0 .4rem;font-size:.97rem;line-height:1.38}
.rv-a{margin:0 0 .3rem;font-size:.92rem;color:var(--green)}
.rv-src{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-2);margin:0;
}

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

.history .h-w{
  font-family:var(--mono);font-size:.62rem;letter-spacing:.05em;
  text-transform:uppercase;color:var(--blue-2);
}

/* a question whose answer is not settled — shown under the article */
.src-flag{
  font-family:var(--body);font-size:.88rem;line-height:1.45;
  color:var(--ink-2);
  border-left:3px solid var(--yellow);
  background:rgba(242,194,48,.09);
  padding:.7rem .9rem;margin:0 0 1.25rem;
}

/* ── à revoir : questions manquées, jusqu'à trois bonnes réponses ── */
.review-home{margin-top:2.4rem}
.section-n{
  font-family:var(--mono);font-weight:600;
  color:var(--red);margin-left:.35rem;letter-spacing:0;
}
.review-home-lede{
  font-size:.88rem;color:var(--ink-2);margin:0 0 1rem;
}
.review-home ul{list-style:none;margin:0;padding:0}
.rh{
  border-top:1px solid var(--steel-2);
  padding:.95rem 0;
}
.review-home li:last-child{border-bottom:1px solid var(--steel-2)}
.rh-q{font-weight:600;font-size:.96rem;line-height:1.38;margin:0 0 .45rem}
.rh-a{
  font-size:.92rem;line-height:1.42;color:var(--ink);
  border-left:3px solid var(--green);
  padding:.1rem 0 .1rem .65rem;margin:0 0 .5rem;
}
.rh-foot{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap}
.rh-src{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-2);margin:0;
}
.rh-src .art{padding:.1rem .35rem;font-size:.64rem}
.pips{display:flex;gap:4px;margin-left:auto}
.pip{
  width:9px;height:9px;border-radius:50%;
  border:1.5px solid var(--steel);background:transparent;
}
.pip.on{background:var(--green);border-color:var(--green)}

/* ── leaving and resuming a series ── */
.quiz-bar{
  display:flex;align-items:center;gap:.8rem;
  margin-bottom:1rem;
}
.linkbtn{
  background:none;border:none;padding:.2rem 0;cursor:pointer;
  font-family:var(--display);font-weight:600;font-size:.86rem;
  color:var(--blue-2);
}
.linkbtn:hover{text-decoration:underline}
.linkbtn:focus-visible{outline:2.5px solid var(--blue-2);outline-offset:3px}
.quiz-w{
  margin-left:auto;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.07em;
  text-transform:uppercase;color:var(--steel);
}


/* weapon label — the exam text is verbatim, so the section is shown separately */
.q-w{
  margin-left:.7rem;padding:.14rem .45rem;
  background:var(--blue);color:#fff;border-radius:2px;
  letter-spacing:.05em;text-transform:none;font-size:.68rem;
}