/* Portal — WebGL. Aperture-flavoured minimal chrome:
   black, thin orange/blue accents, monospace everything. */

:root {
  --bg: #05060a;
  --fg: #d7dde6;
  --dim: #6b7480;
  --orange: #f5a623;
  --blue: #4aa3ff;
  --line: rgba(215, 221, 230, 0.14);
  --mono: "Consolas", "SFMono-Regular", "Menlo", "DejaVu Sans Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

#game {
  display: block;
  width: 100vw;
  height: 100vh;
  background: #000;
  outline: none;
  cursor: crosshair;
}

/* --- loading / click-to-play overlay ----------------------------------- */

#overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, rgba(8, 10, 16, 0.82) 0%, rgba(2, 3, 6, 0.97) 70%);
  transition: opacity 180ms ease-out;
  user-select: none;
}

#overlay.playing {
  opacity: 0;
  pointer-events: none;
}

#panel {
  min-width: min(560px, 88vw);
  padding: 28px 32px 24px;
  border: 1px solid var(--line);
  border-top: 1px solid var(--orange);
  background: rgba(6, 8, 12, 0.72);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.6), 0 24px 80px rgba(0, 0, 0, 0.7);
}

#panel h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--orange);
}

#panel .sub {
  margin: 6px 0 22px;
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--dim);
}

/* progress bar */

#bar-track {
  position: relative;
  height: 3px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

#bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--orange), #ffd08a);
  transition: width 120ms linear;
}

#log {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--dim);
  min-height: 1.2em;
  white-space: pre-wrap;
}

#loading.error #bar {
  background: #ff4d4d;
  width: 100% !important;
}

#loading.error #log {
  color: #ff8080;
}

/* click-to-play prompt: only after #loading gets the "done" class */

#prompt {
  display: none;
}

#loading.done {
  display: none;
}

#loading.done+#prompt {
  display: block;
}

#prompt .cta {
  font-size: 15px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--blue);
  animation: pulse 2.4s ease-in-out infinite;
}

#prompt .keys {
  margin-top: 14px;
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: 0.05em;
  color: var(--dim);
}

#prompt .keys span {
  padding: 1px 6px;
  margin-right: 2px;
  border: 1px solid var(--line);
  color: var(--fg);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.45;
  }
}

/* --- F3 stats HUD ------------------------------------------------------- */

#stats {
  position: fixed;
  top: 10px;
  left: 12px;
  margin: 0;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  color: #b9f0c8;
  background: rgba(0, 0, 0, 0.55);
  border-left: 2px solid var(--blue);
  white-space: pre;
  pointer-events: none;
  text-shadow: 0 1px 0 #000;
}

#stats.hidden {
  display: none;
}

@media (prefers-reduced-motion: reduce) {

  #prompt .cta,
  #bar {
    animation: none;
    transition: none;
  }
}