:root {
  --cyan: #5ff0e0;
  --amber: #ffb347;
  --red: #ff4d3d;
  --green: #7dff9b;
  --ink: #e8f3f5;
  --dim: #8fa6b0;
  --line: rgba(95, 240, 224, .28);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #05090f;
  color: var(--ink);
  font-family: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

canvas#game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
.hidden { display: none !important; }

/* ---------- HUD ---------- */
#hud { position: fixed; inset: 0; pointer-events: none; }
.label { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }

#vignette {
  position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(ellipse at center, transparent 45%, rgba(255, 40, 20, .55) 100%);
}
#lowhp {
  position: absolute; inset: 0; opacity: 0;
  box-shadow: inset 0 0 140px 30px rgba(255, 30, 10, .55);
}
#dmgdir {
  position: absolute; left: 50%; top: 50%; width: 320px; height: 320px;
  margin: -160px 0 0 -160px; opacity: 0;
}
#dmgdir::before {
  content: ""; position: absolute; left: 50%; top: 0; width: 120px; height: 26px; margin-left: -60px;
  background: linear-gradient(to bottom, rgba(255, 70, 40, .95), transparent);
  clip-path: polygon(0 0, 100% 0, 78% 100%, 22% 100%);
}

#numbers { position: absolute; inset: 0; overflow: hidden; }
#numbers span {
  position: absolute; left: 0; top: 0; font-weight: 700; font-size: 17px;
  text-shadow: 0 1px 3px #000; will-change: transform, opacity; opacity: 0;
}
#numbers span.crit { color: #ffd84d; font-size: 23px; }

#crosshair { --gap: 6px; position: absolute; left: 50%; top: 50%; width: 0; height: 0; }
#crosshair i { position: absolute; background: #fff; box-shadow: 0 0 2px #000; }
#crosshair .t, #crosshair .b { width: 2px; height: 8px; left: -1px; }
#crosshair .l, #crosshair .r { width: 8px; height: 2px; top: -1px; }
#crosshair .t { bottom: var(--gap); }
#crosshair .b { top: var(--gap); }
#crosshair .l { right: var(--gap); }
#crosshair .r { left: var(--gap); }
#hitmark {
  position: absolute; left: -13px; top: -13px; width: 26px; height: 26px; opacity: 0;
  background:
    linear-gradient(45deg, transparent 47%, var(--hm, #fff) 47%, var(--hm, #fff) 53%, transparent 53%),
    linear-gradient(-45deg, transparent 47%, var(--hm, #fff) 47%, var(--hm, #fff) 53%, transparent 53%);
  -webkit-mask: radial-gradient(circle, transparent 6px, #000 7px);
  mask: radial-gradient(circle, transparent 6px, #000 7px);
}

#scorebox { position: absolute; left: 28px; top: 22px; }
#score { font-size: 38px; font-weight: 700; line-height: 1.05; font-variant-numeric: tabular-nums; }
#combo { font-size: 20px; font-weight: 700; color: var(--amber); min-height: 26px; }

#wavebox { position: absolute; left: 50%; top: 20px; transform: translateX(-50%); text-align: center; }
#wave { font-size: 24px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
#remaining { font-size: 14px; color: var(--dim); }

#bossbox { position: absolute; left: 50%; top: 84px; width: min(520px, 60vw); transform: translateX(-50%); text-align: center; }
#bossbox .bar { height: 10px; margin-top: 4px; }
#bossbar { background: var(--red); }

#radar {
  position: absolute; right: 24px; top: 20px; width: 168px; height: 168px;
  border-radius: 50%; background: rgba(8, 16, 24, .6); border: 1px solid var(--line);
}

#vitals { position: absolute; left: 28px; bottom: 26px; width: 340px; display: grid; gap: 8px; }
#vitals .row { display: grid; grid-template-columns: 74px 1fr 48px; align-items: center; gap: 8px; }
#vitals .num { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.bar { height: 12px; background: rgba(255, 255, 255, .1); overflow: hidden; transform: skewX(-18deg); }
.bar b { display: block; height: 100%; width: 100%; transform-origin: left; }
.bar.hp b { background: var(--green); }
.bar.core b { background: var(--cyan); }
.bar.dash { height: 6px; }
.bar.dash b { background: var(--amber); }
.bar.danger b { background: var(--red); }

#weaponbox { position: absolute; right: 28px; bottom: 24px; text-align: right; }
#ammo { font-weight: 700; font-size: 56px; line-height: 1; font-variant-numeric: tabular-nums; }
#ammo.low #mag { color: var(--red); }
#ammo small { font-size: 22px; color: var(--dim); margin-left: 8px; }
#wname { font-size: 15px; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); margin: 2px 0 8px; }
#slots { display: flex; gap: 6px; justify-content: flex-end; }
#slots div {
  width: 62px; padding: 4px 6px; font-size: 12px; text-align: left; line-height: 1.2;
  background: rgba(8, 16, 24, .6); border-bottom: 2px solid transparent; color: var(--dim);
}
#slots div.on { color: var(--ink); border-color: var(--cyan); background: rgba(95, 240, 224, .14); }
#slots div.empty { color: #6b5650; }

#banner {
  position: absolute; left: 0; right: 0; top: 24%; text-align: center; opacity: 0;
  text-shadow: 0 2px 16px rgba(0, 0, 0, .8);
}
#banner h2 { font-size: clamp(38px, 7vw, 76px); font-weight: 700; letter-spacing: .05em; text-transform: uppercase; }
#banner p { font-size: 20px; color: var(--amber); }

#notice {
  position: absolute; left: 0; right: 0; top: 66%; text-align: center;
  font-size: 19px; font-weight: 600; color: var(--amber); text-shadow: 0 1px 6px #000;
}

#speedlines {
  position: absolute; inset: -10%; opacity: 0;
  background: repeating-conic-gradient(from 0deg at 50% 50%, rgba(200, 240, 255, .5) 0deg .5deg, transparent .5deg 7deg);
  -webkit-mask: radial-gradient(circle, transparent 38%, #000 82%);
  mask: radial-gradient(circle, transparent 38%, #000 82%);
}
#flash { position: absolute; inset: 0; opacity: 0; background: #fff4e0; }

#scorebox, #wavebox, #bossbox, #radar, #vitals, #weaponbox, #banner, #notice, #crosshair { will-change: transform; }

#diff { display: flex; gap: 6px; margin-bottom: 12px; max-width: 480px; }
#diff button { flex: 1; margin: 0; padding: 8px 6px; }
#diff b { display: block; font-size: 17px; }
#diff small { display: block; font-size: 12px; font-weight: 400; color: var(--dim); }
#diff button.on { border-color: var(--amber); background: rgba(255, 179, 71, .18); }
#diff button.on small { color: var(--ink); }
.sens + .sens { margin-top: 8px; }

/* ---------- Menüs ---------- */
.overlay {
  position: fixed; inset: 0; display: flex; align-items: center; padding: 16px 7vw; overflow-y: auto;
  background: linear-gradient(90deg, rgba(4, 8, 14, .92) 0%, rgba(4, 8, 14, .7) 42%, rgba(4, 8, 14, 0) 72%);
}
.overlay.center { justify-content: center; background: rgba(4, 8, 14, .72); }
.panel { width: min(560px, 100%); margin: auto 0; }
.panel.small { width: min(380px, 100%); text-align: center; }

h1 {
  font-size: clamp(46px, 7.5vw, 92px); line-height: .95; font-weight: 700;
  text-transform: uppercase; letter-spacing: .01em;
}
h1 span { color: var(--cyan); }
.panel h2 { font-size: 34px; margin-bottom: 14px; text-transform: uppercase; letter-spacing: .04em; }
.lead { font-size: 18px; color: #c3d3da; margin: 14px 0 24px; max-width: 46ch; line-height: 1.4; }

button {
  display: block; width: 100%; font: inherit; font-weight: 600; font-size: 16px; color: var(--ink);
  padding: 12px 20px; margin-top: 8px; cursor: pointer;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .16);
  transition: background .12s, transform .12s;
}
button:hover { background: rgba(255, 255, 255, .15); }
button:active { transform: translateY(1px); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
button.primary { background: var(--cyan); color: #04211f; border-color: var(--cyan); font-size: 20px; font-weight: 700; }
button.primary:hover { background: #8ef6ea; }
#menu button.primary { width: auto; min-width: 260px; }

.best { min-height: 22px; margin-top: 10px; color: var(--amber); font-weight: 600; }
.keys { display: grid; grid-template-columns: 1fr 1fr; gap: 7px 22px; margin: 16px 0 18px; font-size: 15px; color: #c3d3da; }
kbd {
  font: inherit; font-size: 13px; font-weight: 600; color: var(--ink); padding: 1px 7px; margin-right: 4px;
  background: rgba(255, 255, 255, .1); border-bottom: 2px solid rgba(255, 255, 255, .25);
}
.sens { display: flex; align-items: center; gap: 14px; font-size: 15px; color: #c3d3da; }
.sens input { flex: 1; max-width: 220px; accent-color: var(--cyan); }
.hint { margin-top: 14px; font-size: 14px; line-height: 1.45; color: var(--dim); max-width: 56ch; }
.warn { margin-top: 12px; color: var(--amber); font-size: 14px; }

.bigscore { font-size: 62px; font-weight: 700; color: var(--cyan); font-variant-numeric: tabular-nums; line-height: 1.1; }
.newbest { color: var(--amber); font-weight: 700; }
dl { display: grid; grid-template-columns: 1fr auto; gap: 5px 12px; margin: 14px 0 16px; text-align: left; font-size: 16px; }
dt { color: var(--dim); }
dd { font-weight: 700; text-align: right; font-variant-numeric: tabular-nums; }

@media (max-width: 760px) {
  .overlay { background: rgba(4, 8, 14, .85); padding: 16px; }
  #vitals { width: 56vw; left: 16px; }
  #radar { width: 110px; height: 110px; right: 16px; }
  #scorebox { left: 16px; }
  #slots div { width: 46px; }
  #ammo { font-size: 40px; }
  #weaponbox { right: 16px; }
}