:root {
  --panel-bg: rgba(14, 20, 28, 0.72);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #e8edf2;
  --muted: #9fb0c0;
  --accent: #6fc8e0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #0b1016;
  color: var(--text);
  font: 13px/1.4 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

#app canvas {
  display: block;
}

#hud,
#help {
  position: fixed;
  left: 16px;
  padding: 10px 14px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  backdrop-filter: blur(6px);
  pointer-events: none;
  user-select: none;
}

#hud {
  top: 16px;
  min-width: 200px;
  font-variant-numeric: tabular-nums;
}

#hud .brand {
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
  color: var(--accent);
}

#hud .brand i {
  margin-right: 8px;
}

#hud .row {
  display: flex;
  align-items: center;
  color: var(--text);
}

#hud .row i,
#help i {
  width: 18px;
  margin-right: 8px;
  text-align: center;
  color: var(--muted);
}

#hud .loading {
  margin-top: 4px;
  color: var(--accent);
}

#hud .loading i {
  color: var(--accent);
}

#help {
  bottom: 16px;
  color: var(--muted);
  font-size: 12px;
}

#help div + div {
  margin-top: 2px;
}

@media (max-width: 640px) {
  #help {
    display: none;
  }
  #hud {
    min-width: 0;
    font-size: 12px;
  }
}

#fatal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 16px;
  background: #0b1016;
  font-size: 15px;
}

#fatal[hidden] {
  display: none;
}

#fatal > i {
  font-size: 32px;
  color: #e8a35a;
}

#fatal p {
  margin: 4px 0 0;
  max-width: 520px;
  color: var(--muted);
}