/* Excellenti : une feuille d'examen. Papier, encre noire, stylo bleu du candidat,
   stylo rouge du correcteur, surligneur jaune pour les questions à revoir. */
:root {
  color-scheme: light;
  --paper: #f3efe4;
  --sheet: #fffdf7;
  --ink: #1b1b1f;
  --soft: #5f5b51;
  --rule: #d6cfbd;
  --pen: #1c3f95;
  --pen-soft: #e8edf8;
  --red: #b3261e;
  --red-soft: #f9e4e1;
  --green: #1f6f43;
  --green-soft: #e3f1e7;
  --marker: #ffe66b;
  --serif: Newsreader, 'Iowan Old Style', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.5 var(--sans); min-height: 100dvh; }
#app { max-width: 1120px; margin: 0 auto; padding: 0 20px 72px; }
#offstage { position: fixed; left: -9999px; top: 0; width: 1px; height: 1px; overflow: hidden; opacity: 0; pointer-events: none; }

h1, h2, h3, p { margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }
h2 { font-size: 24px; }
h3 { font: 600 12px/1.3 var(--sans); letter-spacing: 0.09em; text-transform: uppercase; color: var(--soft); margin-bottom: 12px; }
a { color: var(--pen); }
button, input, select { font: inherit; color: inherit; }
.eyebrow { font: 600 12px/1.3 var(--sans); letter-spacing: 0.09em; text-transform: uppercase; color: var(--soft); }
.muted { color: var(--soft); }
.small { font-size: 14px; }
section { margin-top: 28px; }
:focus-visible { outline: 2px solid var(--pen); outline-offset: 2px; }

/* ---------- en-tête ---------- */
.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 14px;
  margin: 0 -20px; padding: 10px 20px;
  background: var(--paper); border-bottom: 1.5px solid var(--ink);
}
.brand { font: italic 600 22px/1 var(--serif); color: var(--ink); text-decoration: none; }
.bar .grow { flex: 1; min-width: 0; }
.bar .where { font-size: 14px; color: var(--soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tally { font: 500 14px var(--mono); color: var(--soft); white-space: nowrap; }
.timer { font: 500 20px/1 var(--mono); padding: 7px 10px; border: 1.5px solid var(--ink); border-radius: 3px; background: var(--sheet); white-space: nowrap; }
.timer.low { border-color: var(--red); color: var(--red); background: var(--red-soft); }
.conn { font-size: 13px; font-weight: 600; color: var(--red); }
.progress { height: 3px; margin: 0 -20px; background: var(--rule); }
.progress i { display: block; height: 100%; width: 0; background: var(--pen); transition: width 0.2s; }

/* ---------- boutons et champs ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 42px; padding: 8px 16px; border: 1.5px solid var(--ink); border-radius: 3px;
  background: var(--sheet); color: var(--ink); font-weight: 600; font-size: 15px; cursor: pointer; text-decoration: none;
}
.btn:hover { background: #f1ecdf; }
.btn.primary { background: var(--pen); border-color: var(--pen); color: #fff; }
.btn .wide { margin-left: -2px; }
.btn.primary:hover { background: #17347c; }
.btn.danger { border-color: var(--red); color: var(--red); }
.btn.danger:hover { background: var(--red-soft); }
.btn.flagged { background: var(--marker); }
.btn.active { background: var(--ink); color: var(--sheet); }
.btn.sm { min-height: 36px; padding: 5px 12px; font-size: 14px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

label { display: grid; gap: 4px; font-size: 13px; font-weight: 600; color: var(--soft); }
input, select {
  width: 100%; min-height: 42px; padding: 8px 2px; border: 0; border-bottom: 1.5px solid var(--ink); border-radius: 0;
  background: transparent; color: var(--ink); font-size: 17px; font-weight: 500;
}
input:focus, select:focus { outline: none; border-bottom-color: var(--pen); box-shadow: 0 1.5px 0 var(--pen); }
input::placeholder { color: #a9a393; }

label.check { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; font-weight: 500; color: var(--ink); cursor: pointer; }
label.check input { flex: none; width: 20px; min-height: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--pen); }
label.check small { display: block; margin-top: 2px; font-size: 13px; font-weight: 400; color: var(--soft); }

.fine { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; padding: 12px; border: 1px dashed var(--rule); border-radius: 3px; }
.fine[hidden] { display: none; }
.fine p { grid-column: 1 / -1; }

/* ---------- feuilles ---------- */
.card { background: var(--sheet); border: 1px solid var(--rule); border-radius: 3px; padding: 26px; box-shadow: 0 1px 0 var(--rule); }
.panel { border-top: 1.5px solid var(--ink); padding: 14px 0 0; }
.cols { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); align-items: start; }
.stack { display: grid; gap: 14px; align-content: start; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.row.end { justify-content: flex-end; }
.alert { padding: 10px 12px; border-left: 4px solid var(--ink); background: #efe9d9; font-size: 14px; }
.alert.red { border-color: var(--red); background: var(--red-soft); }

/* ---------- accueil ---------- */
.letterhead { padding: 44px 0 24px; border-bottom: 4px double var(--ink); margin-bottom: 28px; }
.letterhead h1 { font-size: clamp(44px, 9vw, 76px); font-style: italic; margin: 0 0 12px; }
.lead { max-width: 60ch; font: 400 20px/1.45 var(--serif); }
.rules { list-style: decimal; margin: 0; padding-left: 26px; display: grid; gap: 8px; font: 400 17px/1.45 var(--serif); }
.rules li::marker { font: 600 14px var(--mono); color: var(--soft); }
.notice { font-size: 13px; color: var(--soft); margin-top: 36px; max-width: 78ch; }
.code { font: 500 44px/1 var(--mono); letter-spacing: 0.14em; padding: 14px 16px; border: 1.5px dashed var(--ink); border-radius: 3px; text-align: center; background: #fff; }

/* ---------- caméra ---------- */
.preview { aspect-ratio: 4 / 3; width: 100%; max-width: 260px; border: 1.5px solid var(--ink); border-radius: 3px; background: #e7e1d1; overflow: hidden; display: grid; place-items: center; color: var(--soft); font-size: 13px; text-align: center; }
.preview video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }

/* ---------- candidats ---------- */
.people { display: grid; gap: 0; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); column-gap: 24px; }
.tile { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--rule); min-width: 0; }
.tile.off { opacity: 0.5; }
.thumb { flex: none; width: 60px; height: 45px; border: 1px solid var(--ink); border-radius: 2px; background: #e7e1d1; overflow: hidden; display: grid; place-items: center; font: 500 14px var(--mono); color: var(--soft); }
.thumb img { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); }
.tile .who { min-width: 0; font-size: 13px; line-height: 1.35; color: var(--soft); }
.tile .who b { display: block; font-size: 15px; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badges { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 3px; }
.badge { font: 600 11px/1.5 var(--sans); padding: 0 5px; border: 1px solid var(--soft); border-radius: 2px; color: var(--soft); white-space: nowrap; }
.badge.host { border-color: var(--ink); color: var(--ink); }
.badge.red { border-color: var(--red); color: var(--red); }
.badge.green { border-color: var(--green); color: var(--green); }

/* ---------- surveillance ---------- */
.wall { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.seat { background: var(--sheet); border: 1px solid var(--rule); border-radius: 3px; overflow: hidden; }
.seat.warn { border-color: var(--red); box-shadow: 0 0 0 2px var(--red-soft); }
.seat.off { opacity: 0.6; }
.shot { aspect-ratio: 4 / 3; background: #e7e1d1; display: grid; place-items: center; color: var(--soft); font-size: 14px; }
.shot img, .shot video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); display: block; }
.seat .who { padding: 10px 12px 12px; font-size: 14px; color: var(--soft); }
.seat .who b { display: block; font-size: 16px; color: var(--ink); }
.timeline { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); margin-top: 10px; }
.timeline figure { margin: 0; }
.timeline img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transform: scaleX(-1); display: block; border: 1px solid var(--rule); }
.timeline figcaption { font: 500 12px var(--mono); color: var(--soft); }

/* ---------- compte à rebours ---------- */
.count { min-height: 70dvh; display: grid; place-items: center; text-align: center; }
.count b { display: block; font: 500 clamp(120px, 32vw, 240px)/1 var(--mono); margin: 12px 0; }

/* ---------- épreuve ---------- */
.exam { display: grid; gap: 32px; grid-template-columns: minmax(0, 1fr) 320px; margin-top: 22px; align-items: start; }
.qmeta, .qhead { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; font: 600 12px/1.3 var(--sans); letter-spacing: 0.09em; text-transform: uppercase; color: var(--soft); margin-bottom: 10px; }
.rature { margin-left: auto; padding: 2px 7px; border-radius: 2px; background: var(--red); color: #fff; letter-spacing: 0.04em; }
.exam h2, .practice h2 { margin-bottom: 14px; }
.stem { font: 500 21px/1.4 var(--serif); white-space: pre-line; overflow-wrap: anywhere; }
.fig { margin: 16px 0 4px; overflow-x: auto; }
.fig svg { display: block; max-width: 100%; height: auto; }
.corr .fig svg { max-width: min(100%, 420px); }
.task { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; margin: 16px 0 6px; font-size: 14px; color: var(--soft); }
.task b { font: 600 12px/1.6 var(--sans); letter-spacing: 0.07em; text-transform: uppercase; padding: 1px 8px; border: 1.5px solid var(--ink); border-radius: 2px; color: var(--ink); }
.task.many b { background: var(--ink); color: var(--sheet); }
.hint { font-size: 13px; color: var(--soft); margin: 14px 0 4px; }
.opts { list-style: none; margin: 0; padding: 0; }
.opt {
  width: 100%; display: flex; gap: 12px; align-items: flex-start; text-align: left;
  padding: 14px 10px; border: 0; border-top: 1px solid var(--rule); background: transparent; color: var(--ink);
  cursor: pointer; font: 400 18px/1.4 var(--serif); overflow-wrap: anywhere;
}
.opts li:last-child .opt { border-bottom: 1px solid var(--rule); }
.opt:hover { background: #f6f1e4; }
.opt.on { background: var(--pen-soft); }
.opt .letter { flex: none; font-weight: 700; }
.opt .text { flex: 1; min-width: 0; }
.scrnote { flex: none; font: 600 11px/1.6 var(--sans); letter-spacing: 0.06em; text-transform: uppercase; color: var(--red); }

/* la case : une croix au stylo bleu, un gribouillis quand elle a été raturée */
.box { position: relative; flex: none; width: 24px; height: 24px; margin-top: 1px; border: 1.5px solid var(--ink); border-radius: 2px; background: #fff; }
.opt.on .box::before, .opt.on .box::after, .box.x::before, .box.x::after {
  content: ''; position: absolute; left: 50%; top: 50%; width: 31px; height: 2.5px; border-radius: 2px; background: var(--pen);
}
.opt.on .box::before, .box.x::before { transform: translate(-50%, -50%) rotate(43deg); }
.opt.on .box::after, .box.x::after { transform: translate(-50%, -50%) rotate(-49deg); }
.opt.scr .box { background: repeating-linear-gradient(-52deg, var(--pen) 0 1.5px, transparent 1.5px 4.5px), repeating-linear-gradient(38deg, var(--pen) 0 1px, transparent 1px 7px), #fff; }

.flagtop { display: none; margin-left: auto; letter-spacing: 0; text-transform: none; }
.rature + .flagtop { margin-left: 0; }
.roomwall { position: fixed; inset: 53px 0 0 0; z-index: 22; overflow: auto; padding: 22px max(20px, calc((100vw - 1080px) / 2)); background: var(--paper); }
.roomwall[hidden] { display: none; }
.qfoot { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.qfoot .next { margin-left: auto; }
.dock { display: none; }

.side { display: grid; gap: 26px; position: sticky; top: 74px; max-height: calc(100dvh - 90px); overflow: auto; padding-right: 2px; }
.grid-group + .grid-group { margin-top: 14px; }
.grid-group h4 { margin: 0 0 6px; display: flex; justify-content: space-between; font: 600 13px var(--sans); }
.grid-group h4 span:last-child { font: 500 13px var(--mono); color: var(--soft); }
.grid { display: grid; grid-template-columns: repeat(10, 1fr); gap: 3px; }
.cell { position: relative; aspect-ratio: 1; min-height: 28px; padding: 0; border: 1px solid var(--soft); border-radius: 2px; background: #fff; color: var(--soft); font: 500 11px var(--mono); cursor: pointer; }
.cell.flag { background: var(--marker); color: var(--ink); }
.cell.done { background: var(--pen); border-color: var(--pen); color: #fff; }
.cell.done.flag { box-shadow: inset 0 -5px 0 var(--marker); }
.cell.rat::after { content: ''; position: absolute; top: 0; right: 0; border: 4px solid var(--red); border-left-color: transparent; border-bottom-color: transparent; }
.cell.cur { outline: 2.5px solid var(--ink); outline-offset: 1.5px; z-index: 1; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px; font-size: 12px; color: var(--soft); }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.legend .k { width: 12px; height: 12px; border: 1px solid var(--soft); border-radius: 2px; }
.legend .k.done { background: var(--pen); border-color: var(--pen); }
.legend .k.flag { background: var(--marker); }
.legend .k.rat { background: linear-gradient(225deg, var(--red) 50%, #fff 50%); }
.side .people { grid-template-columns: 1fr; }

/* ---------- résultats ---------- */
.score { display: flex; flex-wrap: wrap; gap: 20px 48px; align-items: center; }
.score .big { font: 500 clamp(56px, 13vw, 88px)/1 var(--mono); letter-spacing: -0.03em; }
.score .big small { font-size: 0.36em; color: var(--soft); letter-spacing: 0; }
.verdict { display: inline-block; margin-top: 10px; padding: 3px 10px; border: 2px solid var(--green); border-radius: 3px; color: var(--green); font: 700 14px var(--sans); letter-spacing: 0.08em; text-transform: uppercase; transform: rotate(-2deg); }
.verdict.no { border-color: var(--red); color: var(--red); }
.bars { flex: 1; min-width: 240px; display: grid; gap: 9px; }
.barline { display: grid; grid-template-columns: 140px 1fr 48px; gap: 10px; align-items: center; font-size: 14px; }
.barline span:last-child { font: 500 14px var(--mono); text-align: right; }
.barline i { display: block; height: 8px; background: #e7e1d1; }
.barline i b { display: block; height: 100%; background: var(--ink); }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { padding: 9px 12px 9px 0; text-align: left; border-bottom: 1px solid var(--rule); white-space: nowrap; }
th { font: 600 11px var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--soft); border-bottom: 1.5px solid var(--ink); }
td.num, th.num { text-align: right; font-family: var(--mono); font-size: 14px; }
tr.me td { background: var(--pen-soft); }
tr.me td:first-child { box-shadow: -8px 0 0 var(--pen-soft); }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 18px; }
.corr { background: var(--sheet); border: 1px solid var(--rule); border-left: 5px solid var(--rule); border-radius: 3px; padding: 18px 20px; margin-bottom: 12px; }
.corr.good { border-left-color: var(--green); }
.corr.bad { border-left-color: var(--red); }
.corr.plain { border: 0; padding: 0; margin: 16px 0 0; background: none; }
.corr header { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 13px; color: var(--soft); margin-bottom: 8px; }
.corr header .answer { margin-left: auto; font: 500 13px var(--mono); color: var(--ink); }
.corr .stem { font-size: 18px; }
.corr ul { list-style: none; padding: 0; margin: 12px 0; }
.corr li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 6px; border-top: 1px solid var(--rule); font: 400 16px/1.4 var(--serif); overflow-wrap: anywhere; }
.corr li.true { background: var(--green-soft); }
.corr li > b { flex: none; }
.corr li > span:not(.box) { flex: 1; min-width: 0; }
.corr li .box { width: 18px; height: 18px; margin-top: 2px; }
.corr li .box.x::before, .corr li .box.x::after { width: 23px; height: 2px; }
.corr li em { flex: none; font: 600 11px/1.9 var(--sans); letter-spacing: 0.06em; text-transform: uppercase; color: var(--red); }
.corr li em.real { color: var(--green); }
.corr li .why { display: block; margin-top: 3px; font: italic 400 15px/1.4 var(--serif); color: var(--red); }
.chips { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 13px; }
.chip { color: var(--red); }
.chip.ok { color: var(--green); }
.chip::before { content: '✗ '; }
.chip.ok::before { content: '✓ '; }

/* ---------- dialogue et messages ---------- */
dialog { width: min(92vw, 460px); padding: 26px; border: 1.5px solid var(--ink); border-radius: 3px; background: var(--sheet); color: var(--ink); }
dialog::backdrop { background: rgba(27, 27, 31, 0.5); }
dialog h2 { margin-bottom: 12px; }
.dlg-body { display: grid; gap: 8px; margin-bottom: 22px; font: 400 17px/1.45 var(--serif); }
#toast { position: fixed; left: 50%; bottom: 84px; z-index: 30; transform: translate(-50%, 20px); max-width: 90vw; padding: 10px 16px; border-radius: 3px; background: var(--ink); color: var(--sheet); font-size: 15px; font-weight: 500; opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; }
#toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- petits écrans ---------- */
@media (max-width: 900px) {
  .exam { grid-template-columns: minmax(0, 1fr); padding-bottom: 76px; }
  .exam .qfoot { display: none; }
  .hint .keys { display: none; }
  .side { display: none; }
  .exam.open .side { display: grid; position: fixed; inset: 53px 0 64px 0; z-index: 9; max-height: none; align-content: start; padding: 20px; background: var(--paper); }
  .side .people { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .flagtop { display: inline-flex; }
  .deskonly { display: none; }
  .roomwall { inset: 53px 0 64px 0; padding: 18px 14px; }
  .dock { position: fixed; left: 0; right: 0; bottom: 0; z-index: 25; display: flex; gap: 8px; padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); background: var(--paper); border-top: 1.5px solid var(--ink); }
  .dock .btn { padding: 8px 6px; flex: 1; }
  .dock .btn:first-child, .dock .btn:last-child { flex: 0 0 56px; }
}
@media (max-width: 560px) {
  #app { padding: 0 14px 72px; }
  .bar, .progress { margin: 0 -14px; }
  .bar { padding: 8px 14px; gap: 8px; }
  .card { padding: 18px 16px; }
  .exam .card { margin: 0 -14px; border-left: 0; border-right: 0; border-radius: 0; }
  .stem { font-size: 19px; }
  .opt { font-size: 17px; padding: 14px 4px; }
  .timer { font-size: 17px; padding: 6px 8px; }
  .tally, .bar .where, .wide { display: none; }
  .barline { grid-template-columns: 104px 1fr 44px; }
  .code { font-size: 34px; }
  .corr li { flex-wrap: wrap; }
  .corr li > span:not(.box) { flex-basis: calc(100% - 70px); }
  .corr li em { width: 100%; padding-left: 28px; line-height: 1.3; }
  .corr { padding: 16px 14px; }
  .lead { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}