:root{
  --bg:#0b1020;
  --bg-2:#0f172a;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.10);
  --ink:#ffffff;
  --ink-dim:#9fb0d0;
  --red:#dc2626;
  --blue:#2563eb;
  --green:#22c55e;
  --cyan:#22d3ee;
  --magenta:#e879f9;
  --amber:#fbbf24;
  --font-display:'Press Start 2P','Cairo',system-ui,sans-serif;
  --font-body:'VT323','Cairo',system-ui,sans-serif;
  --font-ar:'Cairo',system-ui,sans-serif;
  --r:14px;
  --glow-cyan:0 0 12px rgba(34,211,238,.55),0 0 34px rgba(34,211,238,.22);
  --glow-red:0 0 12px rgba(220,38,38,.6),0 0 30px rgba(220,38,38,.25);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(1000px 620px at 78% -8%, rgba(37,99,235,.28), transparent 62%),
    radial-gradient(820px 520px at 6% 108%, rgba(220,38,38,.22), transparent 60%),
    linear-gradient(180deg,#0b1020 0%,#080c18 100%);
  color:var(--ink);
  font-family:var(--font-ar);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 50% 30%,#000 40%,transparent 82%);
}
.app{position:relative;z-index:1;min-height:100%;display:flex;flex-direction:column;gap:14px;padding:16px clamp(12px,3vw,28px) 22px;max-width:1160px;margin:0 auto}

/* ---------- topbar ---------- */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(14px);
  border-radius:var(--r);padding:12px 16px;position:sticky;top:10px;z-index:6}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:34px;height:34px;flex:none;border-radius:10px;
  background:conic-gradient(from 210deg,var(--cyan),var(--blue),var(--magenta),var(--red),var(--cyan));
  box-shadow:var(--glow-cyan);position:relative}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:6px;background:#070b16}
.brand-text{display:flex;flex-direction:column;line-height:1.35}
.brand-text strong{font-family:var(--font-display);font-size:13px;letter-spacing:.5px;
  background:linear-gradient(90deg,var(--cyan),#fff 55%,var(--magenta));-webkit-background-clip:text;
  background-clip:text;color:transparent}
.brand-text span{font-size:13px;color:var(--ink-dim)}
.topbar-actions{display:flex;gap:8px}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;cursor:pointer;
  border-radius:11px;border:1px solid var(--line);background:var(--panel-2);color:var(--ink);
  transition:transform .16s ease,background .2s ease,box-shadow .25s ease}
.icon-btn:hover{transform:translateY(-2px);background:rgba(255,255,255,.14);box-shadow:var(--glow-cyan)}
.icon-btn.off{color:#7d8aa6}
.icon-btn svg{width:19px;height:19px}

/* ---------- stage ---------- */
.stage{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  background:#05070f;box-shadow:0 26px 70px rgba(0,0,0,.6),inset 0 0 90px rgba(37,99,235,.14);
  aspect-ratio:960/620;width:100%;min-height:340px}
#game{display:block;width:100%;height:100%;touch-action:none;cursor:crosshair}

/* ---------- hud ---------- */
.hud{position:absolute;top:10px;inset-inline:10px;display:flex;gap:8px;flex-wrap:wrap;
  align-items:center;pointer-events:none;z-index:3}
.hud-chip{display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border-radius:11px;
  background:rgba(6,10,22,.62);border:1px solid var(--line);backdrop-filter:blur(8px);
  font-family:var(--font-display);font-size:11px;color:#dff}
.hud-chip svg{width:14px;height:14px;color:var(--cyan)}
.hud-chip b{color:var(--amber)}
.hud-chip span{color:var(--ink-dim);font-family:var(--font-ar);font-size:12px}
.hud-chip#hudScore span,.hud-chip .num{font-family:var(--font-display);color:#fff}
#hudScore{font-family:var(--font-display);color:#fff}
.hud-combo{border-color:rgba(232,121,249,.5);box-shadow:0 0 16px rgba(232,121,249,.25)}
.hud-combo svg{color:var(--magenta)}
.hud-combo span{font-family:var(--font-display);font-size:12px;color:var(--magenta)}
.hud-combo.hot{animation:pulse .5s ease}
@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.16)}100%{transform:scale(1)}}
.hud-best{margin-inline-start:auto}
.hud-best svg{color:var(--amber)}

.buffs{position:absolute;bottom:10px;inset-inline-start:12px;display:flex;gap:8px;z-index:3;pointer-events:none}
.buff{display:flex;flex-direction:column;gap:4px;padding:7px 10px;border-radius:10px;
  background:rgba(6,10,22,.62);border:1px solid var(--line);font-size:12px;min-width:92px}
.buff i{display:block;height:4px;border-radius:3px;background:linear-gradient(90deg,var(--cyan),var(--green));
  animation:shrink linear forwards}
@keyframes shrink{from{width:100%}to{width:0%}}

/* ---------- overlay screens ---------- */
.overlay{position:absolute;inset:0;display:grid;place-items:center;z-index:5;
  background:radial-gradient(circle at 50% 45%,rgba(7,11,22,.72),rgba(4,6,12,.93));
  backdrop-filter:blur(6px)}
.screen{display:none;flex-direction:column;align-items:center;text-align:center;gap:12px;
  padding:clamp(16px,4vw,34px);max-width:600px;animation:fadeUp .45s ease both}
.screen.active{display:flex}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.eyebrow{font-family:var(--font-ar);font-size:12px;letter-spacing:2px;color:var(--cyan);
  text-transform:uppercase;margin:0;text-shadow:var(--glow-cyan)}
.title{font-family:var(--font-display);margin:0;line-height:1.5;font-size:clamp(22px,5.4vw,42px);
  background:linear-gradient(120deg,#fff,var(--cyan) 42%,var(--magenta));-webkit-background-clip:text;
  background-clip:text;color:transparent;text-shadow:0 0 34px rgba(34,211,238,.25)}
.title.small{font-size:clamp(17px,3.6vw,26px)}
.lede{margin:0;font-size:clamp(14px,2.6vw,17px);line-height:1.85;color:#c8d4ec;max-width:52ch}
.lede b{color:var(--amber);font-family:var(--font-display);font-size:13px}
.keys{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 14px;justify-content:center}
.keys li{font-size:13px;color:var(--ink-dim)}
kbd{font-family:var(--font-display);font-size:9px;padding:4px 7px;border-radius:7px;
  background:rgba(255,255,255,.08);border:1px solid var(--line);color:#fff}
.stats{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:2px 0 4px}
.stats div{min-width:112px;padding:11px 14px;border-radius:12px;background:var(--panel);border:1px solid var(--line)}
.stats span{display:block;font-size:12px;color:var(--ink-dim);margin-bottom:5px}
.stats b{font-family:var(--font-display);font-size:15px;color:var(--amber)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-family:var(--font-ar);
  font-weight:600;font-size:15px;padding:12px 22px;border-radius:12px;border:1px solid transparent;
  transition:transform .16s ease,box-shadow .25s ease,background .2s ease}
.btn svg{width:18px;height:18px}
.btn.primary{background:linear-gradient(120deg,var(--blue),var(--cyan));color:#04121c;
  box-shadow:0 10px 30px rgba(34,211,238,.3)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px rgba(34,211,238,.45)}
.btn.ghost{background:var(--panel);color:#dbe6ff;border-color:var(--line)}
.btn.ghost:hover{transform:translateY(-2px);background:var(--panel-2)}
.btn:focus-visible,.icon-btn:focus-visible,.seg button:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.seg{display:inline-flex;padding:5px;gap:5px;border-radius:12px;background:var(--panel);border:1px solid var(--line)}
.seg button{cursor:pointer;border:0;background:transparent;color:var(--ink-dim);font-family:var(--font-ar);
  font-weight:600;font-size:14px;padding:9px 18px;border-radius:9px;transition:background .2s,color .2s}
.seg button:hover{color:#fff}
.seg button.on{background:linear-gradient(120deg,var(--red),#f97316);color:#fff;box-shadow:var(--glow-red)}

/* ---------- footer ---------- */
.foot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:12px 16px;border-radius:var(--r);background:var(--panel);border:1px solid var(--line)}
.legend{display:flex;flex-wrap:wrap;gap:10px 16px}
.lg{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-dim)}
.dot{width:11px;height:11px;border-radius:4px;display:inline-block}
.d-gun{background:var(--green);box-shadow:0 0 10px var(--green)}
.d-shield{background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.d-life{background:var(--magenta);box-shadow:0 0 10px var(--magenta)}
.d-bomb{background:var(--amber);box-shadow:0 0 10px var(--amber)}
.d-rapid{background:var(--red);box-shadow:0 0 10px var(--red)}
.made{margin:0;font-size:13px;color:#7d8aa6}
.made b{color:#cfe0ff;font-family:var(--font-ar)}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .stage{aspect-ratio:auto;height:min(70vh,560px)}
  .hud-chip{padding:6px 9px;font-size:10px}
  .hud-best{margin-inline-start:0}
  .foot{justify-content:center;text-align:center}
}
@media (max-width:520px){
  .brand-text span{display:none}
  .stage{height:min(74vh,520px)}
  .hud{gap:6px;top:8px;inset-inline:8px}
  .hud-chip{font-size:9px;gap:5px}
  .hud-chip svg{width:12px;height:12px}
  .title{font-size:26px}
  .seg button{padding:8px 13px;font-size:13px}
  .keys{gap:6px 10px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}