:root{
  --bg:#0c0e1a; --bg2:#141733; --card:#1b1f3b; --card2:#242a52;
  --text:#eef0fb; --sub:#9aa0c8; --line:#2b315e;
  --acc:#7b61ff; --acc2:#30e3ca; --pink:#ff4d9d; --yellow:#ffd24d; --red:#ff5a6e; --green:#51e08a;
  --radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 50% -10%, #1a1f44 0%, var(--bg) 60%) fixed, var(--bg);
  color:var(--text); font-family:"Segoe UI",system-ui,Arial,sans-serif;
  min-height:100vh; -webkit-text-size-adjust:100%;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:1040px;margin:0 auto;padding:22px 16px 60px}

/* ---- arcade home ---- */
.brand{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;margin:18px 0 26px}
.brand h1{margin:0;font-size:clamp(30px,7vw,52px);font-weight:900;letter-spacing:1px;
  background:linear-gradient(90deg,var(--acc2),var(--acc),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 30px rgba(123,97,255,.3)}
.brand .sub{color:var(--sub);font-size:15px;direction:rtl}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px}
.tile{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  padding:22px 12px;border-radius:var(--radius);background:linear-gradient(180deg,var(--card2),var(--card));
  border:1px solid var(--line);cursor:pointer;transition:transform .12s,border-color .12s,box-shadow .12s;min-height:150px}
.tile:hover{transform:translateY(-4px);border-color:var(--acc);box-shadow:0 12px 34px rgba(0,0,0,.45),0 0 0 1px rgba(123,97,255,.3)}
.tile .ico{font-size:46px;line-height:1;filter:drop-shadow(0 4px 10px rgba(0,0,0,.4))}
.tile .nm{font-weight:800;font-size:17px}
.tile .he{color:var(--sub);font-size:12.5px;direction:rtl}
.foot{margin-top:34px;text-align:center;color:var(--sub);font-size:13px;direction:rtl}
.exthead{display:flex;align-items:baseline;gap:12px;margin:34px 2px 14px;flex-wrap:wrap}
.exthead h2{margin:0;font-size:22px;font-weight:900}
.exthead span{color:var(--sub);font-size:13px}
.tile.ext{background:linear-gradient(180deg,#2a2140,#1c1733);border-color:#3a3270}
.tile.ext:hover{border-color:var(--pink)}

/* ---- game shell ---- */
.gbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.gbar .back{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:10px;background:var(--card);border:1px solid var(--line);font-weight:700}
.gbar .back:hover{border-color:var(--acc)}
.gbar h2{margin:0;font-size:22px;font-weight:900}
.gbar .score{margin-inline-start:auto;font-size:18px;font-weight:800;color:var(--acc2)}
.gbar .score b{color:var(--yellow)}
.stage{display:flex;flex-direction:column;align-items:center;gap:14px}
canvas{background:#05060f;border-radius:14px;border:1px solid var(--line);box-shadow:0 10px 40px rgba(0,0,0,.5);max-width:100%;height:auto;touch-action:none}
.hint{color:var(--sub);font-size:13px;direction:rtl;text-align:center;max-width:560px}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.btn{padding:10px 18px;border-radius:12px;border:1px solid var(--line);background:linear-gradient(180deg,var(--acc),#5a43d6);color:#fff;font-weight:800;font-size:15px;cursor:pointer}
.btn.ghost{background:var(--card);color:var(--text)}
.btn:active{transform:translateY(1px)}
/* on-screen D-pad / buttons for touch */
.pad{display:none;gap:10px;margin-top:6px;user-select:none}
.pad .k{width:66px;height:66px;border-radius:16px;background:var(--card2);border:1px solid var(--line);color:var(--text);font-size:26px;display:flex;align-items:center;justify-content:center;font-weight:800}
.pad .k:active{background:var(--acc);border-color:var(--acc)}
.pad.show{display:grid}
.dpad{grid-template-columns:repeat(3,66px);grid-template-rows:repeat(3,66px);justify-content:center}
.dpad .k.u{grid-area:1/2} .dpad .k.l{grid-area:2/1} .dpad .k.r{grid-area:2/3} .dpad .k.d{grid-area:3/2} .dpad .k.c{grid-area:2/2;background:transparent;border:none}
.lr{grid-template-columns:repeat(2,96px)}
@media(hover:none){.pad{display:grid}.dpad{display:grid}}
.overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(6,8,20,.82);z-index:20}
.overlay.show{display:flex}
.panel{background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--line);border-radius:18px;padding:28px 34px;text-align:center;max-width:90vw}
.panel h3{margin:0 0 6px;font-size:26px}
.panel p{margin:4px 0 16px;color:var(--sub)}