:root {
  --bg: #fbf6ee;
  --card: #ffffff;
  --ink: #2a2620;
  --muted: #7b7468;
  --accent: #2f6f5e;
  --accent-ink: #ffffff;
  --ok: #2e8b57;
  --ko: #c4452f;
  --line: #e7dfd2;
  --shadow: 0 2px 10px rgba(60, 40, 10, .08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d1b18; --card: #2a2722; --ink: #f2ece1; --muted: #a59d8e;
    --accent: #5fb89f; --accent-ink: #10201b; --ok: #58c285; --ko: #ef7a66;
    --line: #3d382f; --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg); color: var(--ink);
  font: 18px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
h1, h2 { margin: 0 0 .4em; line-height: 1.15; }
.wrap { max-width: 520px; margin: 0 auto; padding: 20px 16px 40px; }
.card { background: var(--card); border-radius: 16px; padding: 18px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.muted { color: var(--muted); }
.center { text-align: center; }
.stack > * + * { margin-top: 14px; }

input[type=text] {
  width: 100%; font: inherit; padding: 14px 16px; border-radius: 12px;
  border: 2px solid var(--line); background: var(--card); color: var(--ink);
}
input[type=text]:focus { outline: none; border-color: var(--accent); }
button {
  font: inherit; cursor: pointer; border: 0; border-radius: 12px;
  padding: 14px 18px; background: var(--accent); color: var(--accent-ink); font-weight: 600;
}
button:disabled { opacity: .5; cursor: default; }
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); font-weight: 500; }
.err { color: var(--ko); min-height: 1.4em; font-size: 16px; }

.qimg { display: block; width: 100%; max-height: 38vh; object-fit: cover; border-radius: 12px; margin-bottom: 12px; background: var(--line); }
.qimg.sm { max-height: 16vh; }
.pics { display: grid; gap: 2vh; }
.host .qrow .qimg.sm { max-height: 22vh; }
.host .qrow .pics .qimg:not(.sm) { max-height: 52vh; }
.qtext { font-size: 1.25em; font-weight: 700; margin: 0 0 14px; }
.choices { display: grid; gap: 10px; }
.choice {
  display: flex; align-items: center; gap: 12px; text-align: left; width: 100%;
  background: var(--card); color: var(--ink); border: 2px solid var(--line); font-weight: 500;
  padding: 14px;
}
.choice .letter {
  flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--line); font-weight: 700;
}
.choice.picked { border-color: var(--accent); }
.choice.picked .letter { background: var(--accent); color: var(--accent-ink); }
.choice.right { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, var(--card)); }
.choice.right .letter { background: var(--ok); color: #fff; }
.choice.wrong { border-color: var(--ko); background: color-mix(in srgb, var(--ko) 12%, var(--card)); }
.choice.wrong .letter { background: var(--ko); color: #fff; }
.choice.dim { opacity: .55; }
.choice .bar { margin-left: auto; font-variant-numeric: tabular-nums; color: var(--muted); font-weight: 600; }

.verdict { font-size: 1.3em; font-weight: 800; margin: 0 0 6px; }
.verdict.ok { color: var(--ok); } .verdict.ko { color: var(--ko); }
.explain { margin-top: 12px; padding: 14px; border-radius: 12px; background: color-mix(in srgb, var(--accent) 10%, var(--card)); border: 1px solid var(--line); }
.progress { font-size: 14px; color: var(--muted); margin-bottom: 10px; letter-spacing: .03em; text-transform: uppercase; }

.rank { font-size: 3.2em; font-weight: 800; line-height: 1; color: var(--accent); }
.board { list-style: none; padding: 0; margin: 12px 0 0; }
.board li { display: flex; gap: 10px; padding: 8px 0; border-top: 1px solid var(--line); }
.board li .pos { width: 2em; color: var(--muted); font-variant-numeric: tabular-nums; }
.board li .nm { flex: 1; }
.board li.me { font-weight: 700; color: var(--accent); }

/* ----- Écran animateur (projeté) ----- */
body.host { font-size: clamp(18px, 2.2vw, 30px); }
.stage { min-height: 100vh; display: flex; flex-direction: column; padding: 3vh 4vw; gap: 2vh; }
.stage header { display: flex; justify-content: space-between; align-items: baseline; color: var(--muted); }
.stage main { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.lobby { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4vw; align-items: center; }
.lobby .qr { background: #fff; padding: 14px; border-radius: 20px; width: min(42vh, 100%); justify-self: center; }
.lobby .qr img { width: 100%; display: block; }
.big { font-size: 2.4em; font-weight: 800; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; font-size: .75em; }
.qrow { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 3vw; align-items: start; }
.qrow .qimg { max-height: 60vh; margin: 0; }
.host .qtext { font-size: 1.7em; }
.host .choice { font-size: 1.05em; padding: 1.2vh 14px; }
.host .explain { font-size: 1.05em; }
.stage footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.stage footer .hint { color: var(--muted); font-size: .7em; }
.two-col { columns: 2; column-gap: 3vw; }
.two-col li { break-inside: avoid; }
.board.big li { align-items: baseline; font-size: .85em; }
.board .cm { color: var(--muted); font-size: .8em; }
@media (max-width: 800px) { .lobby, .qrow { grid-template-columns: 1fr; } .two-col { columns: 1; } }
.qimg.ans { object-fit: contain; background: transparent; }