.ptree-wrap {
  --bulb-size: clamp(28px, 4.5vw, 56px);
  --gap: clamp(6px, 1vw, 12px);
  --ring: 4px;
  --off: #1b1b1b;
  --prestage: #c8f2ff;
  --stage: #b3f7b6;
  --amber: #f5c542;
  --green: #30d158;
  --red: #ff3b30;
  --housing: #101010;
  --metal: #2a2a2a;
  display: inline-block;
  padding: 14px 16px;
  border-radius: 10px;
  background: linear-gradient(180deg, #111 0%, #090909 100%);
  box-shadow: 0 6px 24px rgba(0,0,0,0.45), inset 0 0 0 1px #000;
  color: #e9e9e9;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.ptree-wrap.mono {
  --prestage: #e6e6e6;
  --stage: #e6e6e6;
  --amber: #e6e6e6;
  --green: #e6e6e6;
  --red: #e6e6e6;
}

.ptree-grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-rows: var(--bulb-size);
  gap: var(--gap);
  padding: 12px;
  background: radial-gradient(120% 100% at 50% 0%, #333 0%, #222 50%, #141414 100%);
  border-radius: 12px;
  border: 1px solid #000;
}

.ptree-bulb {
  position: relative;
  width: calc(var(--bulb-size) * 1.1);
  height: var(--bulb-size);
  margin: 0 auto;
  border-radius: calc(var(--bulb-size) / 2);
  background: var(--housing);
  box-shadow:
    inset 0 0 0 1px #000,
    inset 0 -2px 8px rgba(255,255,255,0.06),
    0 2px 8px rgba(0,0,0,0.6);
}

.ptree-bulb > span {
  position: absolute;
  inset: var(--ring);
  border-radius: 999px;
  background: var(--off);
  box-shadow: inset 0 0 18px rgba(0,0,0,0.5);
  transition: filter 100ms ease, background 100ms ease, box-shadow 100ms ease;
}

.ptree-bulb.on > span { filter: brightness(1.25) saturate(1.2); }
.ptree-bulb.prestage.on > span { background: var(--prestage); box-shadow: 0 0 24px var(--prestage), inset 0 0 8px #fff; }
.ptree-bulb.stage.on    > span { background: var(--stage);    box-shadow: 0 0 24px var(--stage), inset 0 0 8px #fff; }
.ptree-bulb.amber.on    > span { background: var(--amber);    box-shadow: 0 0 28px var(--amber), inset 0 0 8px #fff; }
.ptree-bulb.green.on    > span { background: var(--green);    box-shadow: 0 0 32px var(--green), inset 0 0 8px #fff; }
.ptree-bulb.red.on      > span { background: var(--red);      box-shadow: 0 0 32px var(--red), inset 0 0 8px #fff; }

.ptree-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.ptree-btn {
  appearance: none;
  border: 1px solid #000;
  background: linear-gradient(#2a2a2a, #1f1f1f);
  padding: 8px 12px;
  border-radius: 8px;
  color: #f2f2f2;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.35), inset 0 0 0 1px rgba(255,255,255,0.06);
  transition: transform 80ms ease, filter 80ms ease, background 120ms ease;
}
.ptree-btn:hover { filter: brightness(1.1); }
.ptree-btn:active { transform: translateY(1px) scale(0.99); }
.ptree-btn[disabled] { opacity: 0.55; cursor: not-allowed; }

.ptree-audio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
  opacity: 0.9;
}

.ptree-readout {
  margin-top: 10px;
  font-size: 0.95rem;
  line-height: 1.4;
}
.ptree-help { opacity: 0.7; margin-top: 4px; }
kbd {
  background: #2b2b2b;
  border: 1px solid #000;
  border-bottom-width: 2px;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.88em;
}
/* === Judge layout === */
.ptree-wrap.judge {
  padding: 10px 12px 12px;
}

.ptree-judge-svg {
  display: block;
  width: min(420px, 90vw);
  height: auto;
  margin: 6px auto 0;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,0.45));
}

/* Sign */
.ptree-wrap.judge .sign-plate {
  fill: #181818; stroke: #000; stroke-width: 2;
}
.ptree-wrap.judge .sign-cap {
  fill: #0f0f0f; stroke: #000; stroke-width: 2;
}
.ptree-wrap.judge .sign-text {
  fill: #e9e9e9; font: 700 18px/1 "Oxanium", system-ui, sans-serif;
  letter-spacing: 2px;
}

/* Mast & housings */
.ptree-wrap.judge .mast {
  fill: #121212; stroke: #000; stroke-width: 2;
}
.ptree-wrap.judge .housing path {
  fill: #1c1c1c; stroke: #000; stroke-width: 2;
}

/* Bulb lenses (SVG) – reuse CSS variables */
.ptree-wrap.judge .lens {
  fill: var(--off);
  stroke: #000;
  stroke-width: 2;
  filter: none;
  transition: filter 100ms ease, fill 100ms ease;
}
.ptree-wrap.judge .ptree-bulb.on .lens { filter: url(#glow); }
.ptree-wrap.judge .ptree-bulb.prestage.on .lens { fill: var(--prestage); }
.ptree-wrap.judge .ptree-bulb.stage.on    .lens { fill: var(--stage); }
.ptree-wrap.judge .ptree-bulb.amber.on    .lens { fill: var(--amber); }
.ptree-wrap.judge .ptree-bulb.green.on    .lens { fill: var(--green); }
.ptree-wrap.judge .ptree-bulb.red.on      .lens { fill: var(--red); }