:root {
  --bg: #000010;
  --panel: rgba(10, 14, 28, 0.94);
  --fg: #e8ecf8;
  --muted: #9aa3c0;
  --accent: #4f8cff;
  --border: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; height: 100%; overflow: hidden;
  background: var(--bg); color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  overscroll-behavior: none;
}

#view {
  position: fixed; inset: 0; width: 100vw; height: 100vh;
  display: block; background: #000; touch-action: none;
  /* Point-filter the canvas when the browser scales backing px -> screen px:
     keep the fractal crisp (no bilinear blur), especially mid-zoom. Supersampling
     does the smoothing at render time; the display upscale should stay sharp. */
  image-rendering: crisp-edges;  /* fallback for browsers without `pixelated` */
  image-rendering: pixelated;    /* wins where supported (last valid value) */
}

.hud {
  position: fixed; top: env(safe-area-inset-top, 8px); left: 8px;
  display: flex; flex-direction: column; gap: 6px; align-items: flex-start;
  pointer-events: none; font-variant-numeric: tabular-nums;
}
.hud-row { display: flex; gap: 8px; align-items: center; }
.status, .zoom {
  background: rgba(0, 0, 0, 0.55); padding: 4px 9px; border-radius: 8px;
  font-size: 12px; color: var(--fg); backdrop-filter: blur(6px);
}
.zoom { color: var(--accent); font-weight: 600; }
.coords-hud {
  background: rgba(0, 0, 0, 0.55); padding: 3px 9px; border-radius: 8px;
  font-family: ui-monospace, monospace; font-size: 11px; color: var(--muted);
  backdrop-filter: blur(6px); max-width: 86vw; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}
.coords-hud:empty { display: none; }

/* Top-right corner utility buttons (help / fullscreen). Separate from the HUD,
   which is pointer-events:none; these are interactive. */
.corner {
  position: fixed; top: calc(env(safe-area-inset-top, 0px) + 8px); right: 10px;
  display: flex; gap: 8px; z-index: 20;
}
.corner-btn {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border);
  background: rgba(10, 14, 28, 0.7); color: var(--fg); font-size: 17px;
  backdrop-filter: blur(8px); cursor: pointer; line-height: 1; padding: 0;
}
.corner-btn:active { background: #243056; }

/* First-run gesture hint. pointer-events:none on the whole overlay so it never
   intercepts the gesture that dismisses it (the tap also zooms, etc.). */
.hint {
  position: fixed; inset: 0; z-index: 40; pointer-events: none;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 6, 0.5); backdrop-filter: blur(2px);
  opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s ease;
}
.hint.show { opacity: 1; visibility: visible; }
.hint-card {
  max-width: min(420px, 88vw); margin: 16px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 20px 22px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
}
.hint-card h2 { margin: 0 0 14px; font-size: 17px; font-weight: 600; }
.hint-gestures { list-style: none; margin: 0; padding: 0; }
.hint-gestures li { font-size: 14px; color: var(--fg); margin: 11px 0; line-height: 1.35; }
.hint-gestures b { color: var(--accent); font-weight: 600; }
.hint-gestures .dim { color: var(--muted); font-size: 12px; }
.hint-foot {
  margin-top: 16px; text-align: center; font-size: 12px; color: var(--muted);
  letter-spacing: 0.04em; text-transform: uppercase;
}

.panel-toggle {
  position: fixed; bottom: calc(env(safe-area-inset-bottom, 0px) + 14px); right: 14px;
  width: 52px; height: 52px; border-radius: 50%; border: 1px solid var(--border);
  background: var(--panel); color: var(--fg); font-size: 22px; z-index: 20;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}

/* Explore / Draw quality toggle — bottom-left segmented pill, mirroring the bottom-right
   panel toggle. Interactive (unlike the pointer-events:none HUD). Covered by the bottom
   sheet when the panel is open (z below .panel), which is fine — it's for exploring with
   the panel closed. */
.quality-toggle {
  position: fixed; left: 14px; bottom: calc(env(safe-area-inset-bottom, 0px) + 14px);
  display: flex; z-index: 20; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--border); background: rgba(10, 14, 28, 0.7);
  backdrop-filter: blur(8px); box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}
.qmode {
  border: none; background: transparent; color: var(--muted);
  font-size: 13px; font-weight: 600; padding: 10px 15px; line-height: 1; cursor: pointer;
}
.qmode + .qmode { border-left: 1px solid var(--border); }
.qmode[aria-pressed="true"] { background: var(--accent); color: #fff; }
.qmode:not([aria-pressed="true"]):active { background: #243056; }

.panel {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  max-height: 82vh; overflow-y: auto;
  background: var(--panel); backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  border-radius: 16px 16px 0 0;
  padding: 12px 14px calc(env(safe-area-inset-bottom, 0px) + 16px);
  transform: translateY(110%); transition: transform 0.25s ease;
}
.panel.open { transform: translateY(0); }

.panel-head { display: flex; justify-content: space-between; align-items: center; }
.panel-head h1 { font-size: 15px; margin: 4px 0 10px; font-weight: 600; }
.icon-btn { background: none; border: none; color: var(--muted); font-size: 24px; }

.row { display: flex; gap: 8px; margin: 8px 0; flex-wrap: wrap; }
.btn {
  flex: 1 1 auto; min-width: 70px; padding: 10px 12px; border-radius: 10px;
  background: #1a2240; color: var(--fg); border: 1px solid var(--border);
  font-size: 14px; cursor: pointer;
}
.btn:active { background: #243056; }
.places .btn { flex: 1 1 40%; }

.field { display: flex; flex-direction: column; gap: 6px; margin: 12px 0; font-size: 13px; color: var(--muted); }
.field em { color: var(--accent); font-style: normal; }
.field input[type=range] { width: 100%; accent-color: var(--accent); height: 28px; }
.field select, .coords input, .coords textarea {
  width: 100%; background: #0c1226; color: var(--fg); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px; font-size: 13px; font-family: ui-monospace, monospace;
}
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin: 8px 0; }

.iter-row { display: flex; align-items: center; gap: 8px; }
.iter-row input[type=range] { flex: 1 1 auto; min-width: 0; }
.iter-row input[type=number] {
  flex: 0 0 84px; width: 84px; background: #0c1226; color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px;
  font-size: 13px; font-family: ui-monospace, monospace;
}

.coords { border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; margin: 12px 0; }
.coords legend { color: var(--muted); font-size: 12px; padding: 0 6px; }
.coords label { display: block; font-size: 12px; color: var(--muted); margin: 6px 0; }
.coords textarea { resize: vertical; word-break: break-all; }

.about { margin-top: 8px; color: var(--muted); font-size: 12px; }
.about summary { cursor: pointer; padding: 6px 0; }
.debug { font-family: ui-monospace, monospace; font-size: 11px; white-space: pre-wrap; color: var(--muted); }
.tiny { font-size: 11px; line-height: 1.5; }

@media (min-width: 720px) {
  .panel { left: auto; right: 0; top: 0; bottom: 0; width: 360px; max-height: none;
    border-radius: 0; border-left: 1px solid var(--border); transform: translateX(110%); }
  .panel.open { transform: translateX(0); }
}

/* Custom palette editor (Spawn 42) */
.pal-preview { width: 100%; height: 24px; border-radius: 6px; border: 1px solid var(--border);
  margin: 6px 0; display: block; image-rendering: auto; }
.pal-stops { display: flex; flex-direction: column; gap: 6px; margin: 6px 0; }
.pal-stop { display: flex; align-items: center; gap: 8px; }
.pal-stop input[type=color] { width: 40px; height: 28px; padding: 0; border: 1px solid var(--border);
  border-radius: 6px; background: none; }
.pal-stop input[type=number] { width: 56px; }
.pal-stop .pal-drag { cursor: grab; color: var(--muted); user-select: none; padding: 0 2px; }
.pal-stop .pal-rm { margin-left: auto; }
.pal-mirror { margin: 0; }
.record-row { display: flex; align-items: center; gap: 8px; margin: 8px 0; }
.record-row progress { flex: 1; height: 14px; }