:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --line: #e2e5ea;
  --text: #16181d;
  --muted: #6a7280;
  --accent: #2f5bea;
  --accent-soft: #e8eefd;
  --danger: #c93a3a;
  --success: #1f8a4c;
  --stage: #0f1420;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --surface: #171b22;
    --line: #272d37;
    --text: #e8ebf0;
    --muted: #8d95a3;
    --accent: #6d8dff;
    --accent-soft: #1d2640;
    --danger: #f07070;
    --success: #5bc98a;
    --stage: #07090d;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
button, input, textarea { font: inherit; color: inherit; }
h1, h2 { margin: 0; }

/* En-tête */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
}
.brand h1 { font-size: 18px; }
.brand p { margin: 0; color: var(--muted); font-size: 13.5px; }
.status { font-size: 13px; color: var(--muted); white-space: nowrap; }
.status.ok { color: var(--success); }
.status.error { color: var(--danger); }

/* Mise en page */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 20px;
  padding: 20px 24px 32px;
  max-width: 1600px;
  margin: 0 auto;
  align-items: start;
}

/* Jeu */
.stage {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.stage-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.stage-title { display: flex; align-items: center; gap: 12px; min-width: 0; }
.stage-title strong { display: block; }
.stage-note { margin: 10px 0 12px; color: var(--muted); }
.stage-note:empty { display: none; }
.frame-wrap {
  background: var(--stage);
  border-radius: 10px;
  overflow: hidden;
}
#gameFrame {
  display: block;
  width: 100%;
  height: max(740px, calc(100vh - 190px));
  border: 0;
}
.hint { font-size: 13px; color: var(--muted); }
.stage-actions { display: flex; align-items: center; gap: 14px; }

/* Colonne de droite */
.side { display: grid; gap: 16px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.card h2 { font-size: 15px; margin-bottom: 4px; }
.meta { color: var(--muted); font-size: 13px; margin: 0; }
summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 10px; }

/* Historique */
.history { display: grid; gap: 6px; margin-top: 10px; }
.version {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  cursor: pointer;
  background: none;
  text-align: left;
  width: 100%;
}
.version:hover { border-color: var(--accent); }
.version.active { border-color: var(--accent); background: var(--accent-soft); }
.version-text { min-width: 0; }
.version-text strong { display: block; font-size: 14px; }
.version-text span {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gap { text-align: center; color: var(--muted); font-size: 13px; letter-spacing: 3px; }
.pill {
  display: inline-block;
  min-width: 38px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  text-align: center;
}

/* Boutons et formulaires */
.btn {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .5; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn-danger { color: var(--danger); font-size: 12.5px; padding: 3px 8px; }
.btn-wide { width: 100%; }

form { display: grid; gap: 10px; margin-top: 10px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input[type="text"], input[type="password"], textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  resize: vertical;
}
input:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.file {
  position: relative;
  display: block;
  padding: 10px;
  border: 1px dashed var(--muted);
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  color: var(--text);
}
.file:hover { border-color: var(--accent); }
.file input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.message { margin: 0; font-size: 13px; }
.message:empty { display: none; }
.message.error { color: var(--danger); }
.message.success { color: var(--success); }

.rules { margin: 0 0 10px; padding-left: 18px; }
.rules li { margin-bottom: 6px; }
pre {
  margin: 6px 0 0;
  padding: 10px;
  background: var(--bg);
  border-radius: 8px;
  font-size: 12px;
  white-space: pre-wrap;
}
.admin summary { font-weight: 400; color: var(--muted); font-size: 13px; }
.admin .message { margin-top: 8px; }

@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; padding: 16px; }
  .topbar { padding: 12px 16px; }
  #gameFrame { height: 740px; }
  .hint { display: none; }
}