:root {
  --r: 255, 42, 16;
  --dim: 255, 120, 95;
  --font: "SFMono-Regular", "JetBrains Mono", "Fira Code", ui-monospace, Menlo, Consolas, monospace;
}

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

html, body {
  height: 100%;
  background: #04050a;
  color: #c9ccd6;
  font-family: var(--font);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: crosshair;
}

/* ---------- vignette / scanline atmosphere over the canvas ---------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  background:
    radial-gradient(ellipse at 50% 45%, rgba(0,0,0,0) 35%, rgba(0,0,0,.55) 100%),
    repeating-linear-gradient(to bottom, rgba(0,0,0,.11) 0 1px, rgba(0,0,0,0) 1px 3px);
  mix-blend-mode: multiply;
}

/* ---------- hud ---------- */
#hud {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px clamp(14px, 3vw, 34px);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

#title h1 {
  font-size: clamp(15px, 2.4vw, 26px);
  font-weight: 500;
  letter-spacing: .3em;
  color: #f4f5f8;
  text-shadow: 0 0 18px rgba(var(--r), .35);
}
#title h1 em { font-style: normal; color: rgb(var(--r)); }
#title .sub {
  margin-top: 6px;
  color: rgba(var(--dim), .55);
  font-size: 10px;
}

#readout {
  position: absolute;
  top: 18px;
  right: clamp(14px, 3vw, 34px);
  text-align: right;
  min-width: 168px;
}
#readout div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 3px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
#readout span { color: rgba(255, 255, 255, .32); }
#readout b {
  font-weight: 500;
  color: rgb(var(--r));
  text-shadow: 0 0 12px rgba(var(--r), .5);
}
#readout b.warn { color: #ffd451; text-shadow: 0 0 12px rgba(255, 212, 81, .5); }

#controls {
  pointer-events: auto;
  margin-top: auto;
  padding-bottom: 4px;
}
#controls .row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-bottom: 7px;
}

#controls button {
  font: inherit;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255, 190, 175, .78);
  background: rgba(16, 10, 12, .55);
  border: 1px solid rgba(var(--r), .28);
  padding: 7px 11px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: color .14s, border-color .14s, background .14s, box-shadow .14s;
}
#controls button:hover {
  color: #fff;
  border-color: rgba(var(--r), .85);
  background: rgba(var(--r), .12);
  box-shadow: 0 0 18px rgba(var(--r), .28) inset, 0 0 12px rgba(var(--r), .12);
}
#controls button:active { transform: translateY(1px); }
#controls button.on {
  color: #080506;
  background: rgba(var(--r), .78);
  border-color: rgba(var(--r), 1);
  box-shadow: 0 0 20px rgba(var(--r), .35);
}
#controls button.danger { border-color: rgba(var(--r), .55); color: #ff6a52; }
#controls button.danger:hover { background: rgba(var(--r), .28); color: #fff; }

.slider {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, .3);
  padding-left: 6px;
}
.slider input {
  -webkit-appearance: none;
  appearance: none;
  width: 96px;
  height: 2px;
  background: rgba(var(--r), .35);
  outline: none;
  cursor: pointer;
}
.slider input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 14px;
  background: rgb(var(--r));
  box-shadow: 0 0 10px rgba(var(--r), .8);
}
.slider input::-moz-range-thumb {
  border: 0;
  border-radius: 0;
  width: 10px;
  height: 14px;
  background: rgb(var(--r));
}

#controls .hint { color: rgba(255, 255, 255, .22); letter-spacing: .18em; }

/* ---------- fullscreen flash used by the jump scare ---------- */
#flash {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,.95), rgba(255, 40, 16, .75) 45%, rgba(60,0,0,.9));
  opacity: 0;
  transition: opacity .09s linear;
}

/* ---------- boot / init overlay ---------- */
#boot {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  background: radial-gradient(ellipse at 50% 50%, #0a0b12 0%, #04050a 60%, #000 100%);
  transition: opacity .7s ease;
}
#boot.hidden { opacity: 0; pointer-events: none; }
#boot .panel {
  width: min(560px, 88vw);
  border: 1px solid rgba(var(--r), .25);
  padding: clamp(18px, 3vw, 30px);
  background: rgba(8, 6, 9, .72);
  box-shadow: 0 0 60px rgba(0, 0, 0, .8), 0 0 40px rgba(var(--r), .07) inset;
}
#boot h2 {
  font-size: clamp(16px, 3vw, 24px);
  font-weight: 500;
  letter-spacing: .3em;
  color: #f2f3f7;
  text-transform: uppercase;
}
#boot h2 em { font-style: normal; color: rgb(var(--r)); }
#bootlog {
  margin: 18px 0 20px;
  min-height: 132px;
  font-size: 11px;
  line-height: 1.85;
  letter-spacing: .08em;
  color: rgba(190, 220, 200, .72);
  white-space: pre-wrap;
}
#bootlog .bad { color: rgb(var(--r)); }
#bootbtn {
  font: inherit;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: rgb(var(--r));
  background: transparent;
  border: 1px solid rgba(var(--r), .5);
  padding: 11px 26px;
  cursor: pointer;
  animation: pulse 2.4s ease-in-out infinite;
}
#bootbtn:hover { background: rgba(var(--r), .16); color: #fff; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 rgba(var(--r), 0); }
  50% { box-shadow: 0 0 22px rgba(var(--r), .35); }
}

@media (max-width: 720px) {
  #readout { display: none; }
  #controls button { padding: 6px 8px; font-size: 10px; }
  .slider { display: none; }
}