:root{
  --bg:#0d0d0d; --panel:#11131a; --neon:#36e2ff; --neon2:#c77dff;
  --accent:#BADB5E; --accentD:#9DBF42; --ink:#e8f0f5; --muted:#7e8aa0;
  --font:'Segoe UI',system-ui,-apple-system,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:radial-gradient(circle at 50% 0%,#15161f 0%,var(--bg) 70%);
  color:var(--ink);font-family:var(--font);
  display:flex;flex-direction:column;min-height:100vh;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;user-select:none;-webkit-user-select:none;
}

/* ---------- Top bar ---------- */
.game-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px}
.game-top .back{display:inline-flex;align-items:center;gap:6px;color:var(--accent);text-decoration:none;
  font-size:13px;font-weight:700;border:1px solid rgba(186,219,94,.4);padding:6px 13px;border-radius:8px;transition:.2s}
.game-top .back:hover{background:rgba(186,219,94,.12)}
.game-top .brand{font-weight:800;font-size:18px;letter-spacing:1px;color:#fff;text-shadow:0 0 10px rgba(54,226,255,.6)}
.game-top .brand span{color:var(--neon)}
.snd{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--ink);width:34px;height:34px;
  border-radius:8px;cursor:pointer;font-size:15px;transition:.2s}
.snd:hover{border-color:var(--neon);color:var(--neon)}
.snd.off{opacity:.4}

/* ---------- HUD ---------- */
.hud{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;padding:4px 12px 10px}
.hud-item{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:10px;
  padding:7px 16px;text-align:center;min-width:78px}
.hud-item .lbl{display:block;font-size:10px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted)}
.hud-item .val{display:block;font-size:18px;font-weight:800;color:#fff;margin-top:2px;font-variant-numeric:tabular-nums}
#lives.val{color:#ff2e63;text-shadow:0 0 8px rgba(255,46,99,.6);letter-spacing:2px}

.powerup{height:26px;text-align:center;font-size:13px;font-weight:700;letter-spacing:.5px;margin-bottom:2px;
  transition:opacity .2s;opacity:0}
.powerup.show{opacity:1}

/* ---------- Stage / canvas ---------- */
.stage{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:14px;padding:6px 10px 26px}
.canvas-box{position:relative;width:min(92vw,72vh,560px);aspect-ratio:1/1}
#game{
  width:100%;height:100%;display:block;border-radius:12px;
  background:#0d0d0d;border:1px solid rgba(54,226,255,.25);
  box-shadow:0 0 30px rgba(54,226,255,.18),inset 0 0 30px rgba(0,0,0,.6);
  image-rendering:auto;touch-action:none;
}

/* ---------- Overlays ---------- */
.overlay{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;
  background:rgba(8,9,14,.9);border-radius:12px;text-align:center;padding:18px;transition:opacity .25s;cursor:pointer}
.overlay.hide{opacity:0;pointer-events:none}
.ov-card{max-width:420px}
.ov-title{font-size:clamp(26px,6vw,40px);font-weight:900;letter-spacing:2px;color:#fff;
  text-shadow:0 0 14px var(--neon),0 0 30px rgba(54,226,255,.5);margin-bottom:8px}
.ov-sub{color:#c6d2de;font-size:14px;margin-bottom:14px}
.ov-legend{list-style:none;font-size:12.5px;color:var(--muted);line-height:1.9;margin-bottom:18px}
.ov-btn{background:var(--accent);color:#0d0d0d;border:none;padding:13px 36px;border-radius:10px;
  font-size:17px;font-weight:900;letter-spacing:1px;cursor:pointer;transition:.18s;
  box-shadow:0 0 20px rgba(186,219,94,.5)}
.ov-btn:hover{background:var(--accentD);transform:translateY(-2px)}
.ov-keys{margin-top:14px;font-size:11.5px;color:var(--muted)}

/* ---------- D-pad ---------- */
.dpad{display:none;position:relative;width:190px;height:190px;opacity:.85;touch-action:none}
.dbtn{position:absolute;width:62px;height:62px;border-radius:14px;border:1.5px solid rgba(54,226,255,.4);
  background:rgba(54,226,255,.08);color:var(--neon);font-size:22px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.1s;-webkit-tap-highlight-color:transparent}
.dbtn:active{background:rgba(54,226,255,.32);transform:scale(.94)}
.dbtn.up{top:0;left:64px}.dbtn.down{bottom:0;left:64px}
.dbtn.left{left:0;top:64px}.dbtn.right{right:0;top:64px}

.play-hint{text-align:center;color:#9fb0c0;font-size:12.5px;line-height:1.5;max-width:520px;padding:0 14px}
.play-hint b{color:var(--neon)}
.game-foot{text-align:center;color:var(--muted);font-size:11px;padding:10px;opacity:.6}

/* mostrar D-pad en pantallas táctiles / pequeñas */
@media (hover:none) and (pointer:coarse){ .dpad{display:block} }
@media (max-width:760px){ .dpad{display:block} .game-foot{display:none} }