:root {
  --bg-a: #031325;
  --bg-b: #09213f;
  --panel: #0a1d36cc;
  --panel-border: #77e7ff4d;
  --text: #e6f6ff;
  --muted: #91c4df;
  --meter-bg: #13375f;
  --meter-fill-a: #ffdd6f;
  --meter-fill-b: #ff8f42;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  color: var(--text);
  font-family: "Trebuchet MS", "Verdana", sans-serif;
  background: radial-gradient(circle at 30% 20%, var(--bg-b), var(--bg-a) 55%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% -20%, #93e9ff2e 0%, #0000 45%),
    radial-gradient(circle at 50% 120%, #0009 0%, #0000 36%),
    linear-gradient(90deg, #00152b14, #0000 30%, #0000 70%, #00152b14);
  mix-blend-mode: screen;
}

#app,
#app canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hud {
  position: fixed;
  top: 1rem;
  left: 1rem;
  width: min(23rem, 92vw);
  padding: 0.85rem 1rem 0.95rem;
  border: 1px solid var(--panel-border);
  border-radius: 0.75rem;
  background: var(--panel);
  backdrop-filter: blur(5px);
  box-shadow: 0 0.7rem 1.7rem #0007;
  z-index: 5;
}

.hud h1 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.hud p {
  margin: 0.35rem 0 0.8rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.meter-row {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.meter {
  height: 0.6rem;
  border-radius: 999px;
  border: 1px solid #8ce7ff3a;
  background: var(--meter-bg);
  overflow: hidden;
}

#staminaFill {
  height: 100%;
  width: 100%;
  transform-origin: left center;
  background: linear-gradient(90deg, var(--meter-fill-a), var(--meter-fill-b));
  box-shadow: 0 0 0.7rem #ffca4f7d;
}

#stats {
  margin: 0;
  font-size: 0.76rem;
  line-height: 1.45;
  color: #d9f4ff;
  font-family: "Consolas", "Monaco", monospace;
  white-space: pre-wrap;
}