:root {
  --fond: #12151a;
  --panneau: #1b1f26;
  --panneau-clair: #242a33;
  --bordure: #333b46;
  --texte: #eef1f5;
  --texte-doux: #9aa5b3;
  --accent: #d79a4a;
  --scene: #eceae6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--fond);
  color: var(--texte);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.application { display: flex; flex-direction: column; min-height: 100vh; }

.entete {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--bordure);
  background: var(--panneau);
}
.entete h1 { margin: 0; font-size: 18px; letter-spacing: 0.02em; }
.sous-titre { margin: 2px 0 0; color: var(--texte-doux); font-size: 13px; }
.etiquette-stack {
  margin: 0;
  padding: 6px 10px;
  border: 1px solid var(--bordure);
  border-radius: 999px;
  color: var(--texte-doux);
  font-size: 12px;
  white-space: nowrap;
}

.corps { display: flex; flex: 1; min-height: 0; }
@media (max-width: 900px) { .corps { flex-direction: column; } }

.scene { position: relative; flex: 1; min-height: 60vh; background: var(--scene); }
.conteneur-3d { position: absolute; inset: 0; }
.conteneur-3d canvas { display: block; width: 100%; height: 100%; touch-action: none; }

.aide {
  position: absolute;
  left: 12px;
  bottom: 10px;
  margin: 0;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(18, 21, 26, 0.72);
  color: #e7eaef;
  font-size: 12px;
}

.message {
  position: absolute;
  left: 50%;
  top: 16px;
  transform: translateX(-50%);
  max-width: min(90%, 620px);
  padding: 10px 14px;
  border: 1px solid #9c3b3b;
  border-radius: 8px;
  background: #2a1616;
  color: #ffd9d9;
  font-size: 13px;
}
.message[data-ton="info"] { border-color: var(--bordure); background: rgba(18, 21, 26, 0.86); color: var(--texte); }

.panneau {
  width: 320px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 18px;
  overflow-y: auto;
  border-left: 1px solid var(--bordure);
  background: var(--panneau);
}
@media (max-width: 900px) { .panneau { width: auto; border-left: 0; border-top: 1px solid var(--bordure); } }

.bloc h2 {
  margin: 0 0 10px;
  color: var(--texte-doux);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.zones { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.zones button {
  padding: 9px 10px;
  border: 1px solid var(--bordure);
  border-radius: 8px;
  background: var(--panneau-clair);
  color: var(--texte);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.zones button[aria-selected="true"] { border-color: var(--accent); color: var(--accent); }

.decors { display: grid; grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); gap: 10px; }
.decor {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 0 6px;
  border: 1px solid var(--bordure);
  border-radius: 8px;
  background: var(--panneau-clair);
  color: var(--texte);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  overflow: hidden;
}
.decor[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.decor .apercu { height: 56px; background-size: cover; background-position: center; }
.decor .libelle { padding: 0 6px; }

.resume { margin: 0 0 12px; color: var(--texte-doux); font-size: 13px; }
.actions { display: flex; flex-direction: column; gap: 8px; }
.actions button {
  padding: 10px;
  border: 1px solid var(--bordure);
  border-radius: 8px;
  background: var(--panneau-clair);
  color: var(--texte);
  font: inherit;
  cursor: pointer;
}
.actions button:hover, .zones button:hover, .decor:hover { border-color: var(--accent); }

.pied { margin-top: auto; color: var(--texte-doux); font-size: 11px; }
.pied p { margin: 0; }