/* 2048 — habillage.
   Comme Blocs a son écran d'arcade violet-nuit, 2048 a le sien, chaud :
   fond prune et ambre, plateau de cacao sombre, tuiles vives qui s'éclairent
   à mesure qu'elles grandissent. Le parti pris ne dépend pas du thème du
   portail : un plateau de jeu est son propre monde. Mobile d'abord. */

/* ---------- la scène ---------- */
.game-2048 .game-stage{
  background:
    radial-gradient(ellipse 120% 60% at 50% -10%, rgba(255,160,90,.48), transparent 62%),
    radial-gradient(ellipse 90% 50% at 12% 105%, rgba(239,119,72,.26), transparent 62%),
    linear-gradient(168deg, #4A2438 0%, #331A2B 52%, #23121F 100%);
}
@media(min-width:720px){
  .game-2048 .game-stage{border-color:rgba(255,255,255,.12);box-shadow:0 18px 50px rgba(35,18,31,.38)}
}

.dx{
  position:absolute;inset:0;
  display:flex;flex-direction:column;
  padding:10px 12px calc(10px + env(safe-area-inset-bottom));
  gap:10px;
  user-select:none;-webkit-user-select:none;
  -webkit-tap-highlight-color:transparent;
}

/* ---------- compteurs ---------- */
.dx-hud{display:flex;align-items:stretch;gap:8px;flex:none}
.dx-stat,.dx-pause{
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.15);
  border-radius:14px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  color:#FDF2EA;
}
.dx-stat{flex:1;min-width:0;padding:6px 12px;line-height:1.15}
.dx-stat small{
  display:block;font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;
  color:rgba(253,242,234,.62);font-weight:500;
}
.dx-stat b{
  display:block;font-family:'Fredoka','Outfit',sans-serif;font-size:1.3rem;font-weight:600;
  color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.dx-pause{flex:none;width:52px;font-size:.95rem;letter-spacing:.06em;cursor:pointer}
.dx-pause:focus-visible{outline:3px solid #FFB98A;outline-offset:2px}

/* ---------- plateau ---------- */
.dx-plateau{flex:1;min-height:0;display:flex;align-items:center;justify-content:center}
.dx-plateau canvas{
  display:block;border-radius:18px;
  box-shadow:0 0 0 1px rgba(255,255,255,.14), 0 18px 44px rgba(0,0,0,.46),
             0 0 70px rgba(255,150,90,.16);
  touch-action:none;
}

/* ---------- commandes ---------- */
.dx-pad{
  flex:none;display:grid;gap:9px;
  grid-template-columns:repeat(3,1fr);
  max-width:340px;width:100%;margin:0 auto;
}
.dx-btn{
  display:flex;align-items:center;justify-content:center;
  min-height:74px;              /* le plateau est carré : il reste de la hauteur, autant l'offrir au pouce */
  border:1px solid rgba(255,255,255,.17);border-radius:16px;
  background:rgba(255,255,255,.11);color:#fff;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  font-family:'Fredoka','Outfit',sans-serif;font-weight:600;font-size:1.6rem;
  cursor:pointer;touch-action:none;
  box-shadow:0 4px 0 rgba(0,0,0,.3);
  transition:transform .06s ease, background-color .06s ease, box-shadow .06s ease;
}
.dx-btn:active,.dx-btn.is-down{
  transform:translateY(4px);box-shadow:0 0 0 rgba(0,0,0,.3);
  background:rgba(255,255,255,.22);
}
.dx-btn:focus-visible{outline:3px solid #FFB98A;outline-offset:2px}
.dx-pad [data-sens="haut"]{grid-column:2;grid-row:1}
.dx-pad [data-sens="gauche"]{grid-column:1;grid-row:2}
.dx-pad [data-sens="bas"]{grid-column:2;grid-row:2}
.dx-pad [data-sens="droite"]{grid-column:3;grid-row:2}

.dx-aide{
  flex:none;text-align:center;font-size:.8rem;
  color:rgba(253,242,234,.68);font-weight:500;line-height:1.35;
}
.dx-aide[hidden]{display:none}
.dx-aide .kbd{
  display:inline-block;padding:0 6px;border-radius:5px;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.09);
  font-size:.9em;font-family:ui-monospace,monospace;
}

/* ---------- écran large : plateau à gauche, colonne à droite ---------- */
@media(min-width:720px){
  .dx{
    display:grid;padding:18px;gap:14px;
    grid-template-columns:1fr 184px;
    grid-template-rows:1fr auto;
  }
  .dx-plateau{grid-column:1;grid-row:1 / span 2;min-height:0}
  .dx-hud{grid-column:2;grid-row:1;flex-direction:column;gap:10px;justify-content:flex-start}
  .dx-stat{flex:none;padding:8px 14px}
  .dx-stat b{font-size:1.55rem}
  .dx-pause{width:100%;height:46px}
  .dx-pad{grid-column:2;grid-row:2;align-content:end;max-width:none}
  .dx-btn{min-height:54px;font-size:1.5rem}
  .dx-aide{display:none}
}

@media (prefers-reduced-motion: reduce){
  .dx-btn{transition:none}
}