/* Oxygen Edu — Jeu des capitales */
:root{
  --ring: rgba(255,255,255,.12);
  --panel: rgba(255,255,255,.06);
  --muted: #cbd5e1;
  --ok:#22c55e; --err:#ef4444;
  --radius:16px; --shadow:0 12px 30px rgba(0,0,0,.25);
}

.panel{background:var(--panel);border:1px solid var(--ring);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.controls .chip{display:flex;align-items:center;gap:8px;border:1px solid var(--ring);border-radius:999px;padding:.45rem .7rem;background:rgba(255,255,255,.06)}
.select{appearance:none;border:1px solid var(--ring);background:#0b1322;color:#e7e7ee;padding:.45rem .6rem;border-radius:10px}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.6rem 1.1rem;border-radius:999px;font-weight:700;border:1px solid var(--ring);
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.04));color:#e7e7ee}
.btn-primary{display:inline-flex;align-items:center;gap:.5rem;padding:.6rem 1.2rem;border-radius:999px;font-weight:800;color:#0b1220;border:0;
  background:linear-gradient(90deg,#a78bfa,#38bdf8)}
.muted{color:var(--muted)}

.timeline{margin:.6rem 0 .8rem}
.timeline__rail{position:relative;height:10px;border-radius:6px;background:linear-gradient(90deg, rgba(167,139,250,.35), rgba(56,189,248,.35));
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.14)}
.timeline__cursor{position:absolute;top:-6px;left:0;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(167,139,250,.45);
  transform:translateX(-50%);transition:left .35s ease-out}

.board{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:14px;min-height:360px}
@media (max-width:980px){ .board{grid-template-columns:1fr; } }

.col{background:rgba(255,255,255,.05);border:1px solid var(--ring);border-radius:14px;padding:12px;min-height:260px}
.col-left, .col-right{display:grid;gap:10px;align-content:start}

.option{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:.65rem .8rem;border:2px solid #223048;border-radius:12px;
  background:#0b1322;color:#e7e7ee;font-weight:700;cursor:pointer}
.option:hover{background:#0f192b}
.option[aria-pressed="true"]{border-color:#a78bfa;box-shadow:0 0 0 3px rgba(167,139,250,.25) inset}
.option.ok{border-color:var(--ok);background:rgba(34,197,94,.16)}
.option.ko{border-color:var(--err);background:rgba(239,68,68,.12)}

.col-center .flag{display:grid;place-items:center;border:1px dashed var(--ring);border-radius:12px;min-height:180px;background:rgba(255,255,255,.03)}
.col-center .flag img{max-width:92%;height:auto;object-fit:contain;border-radius:10px;display:block}
.prompt{font:800 20px/1.25 Poppins,Inter,sans-serif;margin:.8rem 0}
.actions{display:flex;gap:10px;margin:.5rem 0}
.feedback{min-height:24px;font-weight:800}
.help{min-height:18px;border:1px dashed var(--ring);border-radius:10px;padding:8px;margin-top:6px;background:rgba(255,255,255,.04)}

.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.55);opacity:0;pointer-events:none;transition:.2s}
.modal[aria-hidden="false"]{opacity:1;pointer-events:auto}
.modal-content{background:#0b1322;border:1px solid #1f2a3b;border-radius:18px;padding:22px;width:min(520px,92%);box-shadow:var(--shadow)}
.option {
  display: block;
  padding: .6rem .8rem;
  margin-bottom: .4rem;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.15);
  background: rgba(255,255,255,.05);
  cursor: pointer;
}
.option:hover { background: rgba(255,255,255,.1); }
.option.active { background: #38bdf8; color: #0b1220; font-weight: 700; }
:root{
  --brd: rgba(255,255,255,.12);
  --text: #e7e7ee;
  --ok: #22c55e;
  --err: #ef4444;

  /* accents pour les sélections */
  --accent-left:  #22d3ee; /* cyan */
  --accent-right: #a78bfa; /* violet */
  --btn-ready:   #f59e0b;  /* secondaire (ambre) */
}

/* Container de l'image : fond visible derrière les PNG transparents */
.flag {
  border: 1px solid var(--brd);
  border-radius: 14px;
  padding: 16px;
  background: radial-gradient(100% 120% at 50% 0%,
              rgba(255,255,255,.055) 0%,
              rgba(255,255,255,.03) 100%),
              #0e1627; /* masque la transparence */
}
.flag img{
  display:block;
  width:100%;
  height:auto;
  border-radius:12px;
  background:#0e1627; /* au cas où l’image déborde */
}

/* Style des puces */
.chip{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:.55rem .8rem;
  margin:.35rem .35rem 0 0;
  border:1px solid var(--brd);
  border-radius:12px;
  background:#0b1322;
  color:var(--text);
  font-weight:700;
  cursor:pointer;
  transition:all .15s ease;
}
.chip:hover{ transform:translateY(-1px); }

/* Sélection : couleurs différentes gauche/droite */
.col-left  .chip.sel{
  background: linear-gradient(90deg, rgba(34,211,238,.25), rgba(34,211,238,.12));
  border-color: color-mix(in srgb, var(--accent-left) 60%, #000);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-left) 45%, transparent);
}
.col-right .chip.sel{
  background: linear-gradient(90deg, rgba(167,139,250,.25), rgba(167,139,250,.10));
  border-color: color-mix(in srgb, var(--accent-right) 60%, #000);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-right) 45%, transparent);
}

/* Boutons */
.btn[disabled]{
  opacity:.55; cursor:not-allowed;
}
.btn.is-ready{
  /* couleur secondaire quand prêt à valider */
  background: linear-gradient(90deg, var(--btn-ready), #fbbf24);
  color:#0b1220;
  border:0;
  font-weight:800;
}