:root {
  --bg: #05070d;
  --neon: #2de2ff;
  --neon-2: #38ffb0;
  --hot: #ff7a2f;
  --text: #cfe6f2;
  --dim: #6f8597;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

#scene { position: fixed; inset: 0; }
#scene canvas { display: block; }

.hidden { opacity: 0 !important; pointer-events: none !important; }

/* ----------------------------------------------------------------- Loader */
#loader {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(1200px 800px at 50% 40%, rgba(45, 226, 255, 0.08), transparent 60%),
    radial-gradient(900px 600px at 50% 120%, rgba(255, 122, 47, 0.12), transparent 55%),
    var(--bg);
  transition: opacity 0.9s ease;
}

.loader-inner { width: min(520px, 84vw); text-align: center; }

.loader-logo {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 10px;
  color: #eafdff;
  text-shadow: 0 0 22px rgba(45, 226, 255, 0.55);
}
.loader-logo span { color: var(--neon); }

.loader-sub {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 6px;
  color: var(--dim);
}

.bar-wrap { margin-top: 38px; }

.bar-track {
  position: relative;
  height: 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(45, 226, 255, 0.25);
  overflow: hidden;
  box-shadow: inset 0 0 14px rgba(0, 0, 0, 0.6);
}

.bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--neon-2), var(--neon) 60%, #8a6bff);
  box-shadow: 0 0 18px rgba(45, 226, 255, 0.8);
  transition: width 0.25s ease;
}

.bar-scan {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  width: 30%;
  animation: scan 1.6s linear infinite;
  mix-blend-mode: screen;
}
@keyframes scan { 0% { transform: translateX(-120%); } 100% { transform: translateX(420%); } }

.bar-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--dim);
}
#loaderPct { color: var(--neon); font-variant-numeric: tabular-nums; }

/* -------------------------------------------------------------------- HUD */
#hud {
  position: fixed;
  left: 22px;
  bottom: 20px;
  z-index: 20;
  transition: opacity 1s ease;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.9);
  pointer-events: none;
}
.hud-title { font-size: 16px; font-weight: 700; letter-spacing: 4px; color: #eafdff; }
.hud-dim { color: var(--dim); font-weight: 400; letter-spacing: 2px; }

.hud-link { margin-top: 8px; font-size: 12px; letter-spacing: 1px; color: var(--dim); display: flex; align-items: center; gap: 8px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: #444; box-shadow: 0 0 0 0 rgba(56,255,176,0.6); }
.dot.live { background: var(--neon-2); animation: pulse 1.8s ease-out infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(56,255,176,0.6);} 70%{ box-shadow:0 0 0 9px rgba(56,255,176,0);} 100%{ box-shadow:0 0 0 0 rgba(56,255,176,0);} }

.hud-help { margin-top: 12px; font-size: 11px; letter-spacing: 0.5px; color: var(--dim); max-width: 60vw; }
.hud-help b { color: var(--text); font-weight: 600; }

/* ------------------------------------------------------------- Rig panel */
#ctrlPanel {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 30;
  width: 250px;
  background: rgba(8, 14, 22, 0.86);
  border: 1px solid rgba(45, 226, 255, 0.28);
  border-radius: 10px;
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.55);
  font-size: 12px;
  transition: opacity 0.6s ease;
  overflow: hidden;
}
.bp-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px;
  letter-spacing: 3px; font-weight: 700; color: #eafdff;
  border-bottom: 1px solid rgba(45, 226, 255, 0.18);
  background: linear-gradient(90deg, rgba(45,226,255,0.10), transparent);
}
#bpToggle { cursor: pointer; color: var(--neon); user-select: none; font-size: 11px; }
.bp-body { padding: 12px; max-height: 78vh; overflow-y: auto; }
#ctrlPanel.collapsed .bp-body { display: none; }
#ctrlPanel.collapsed #bpToggle { transform: rotate(180deg); }

.bp-lbl { display: block; color: var(--text); margin-bottom: 6px; }
.bp-hint { color: var(--dim); font-size: 10px; letter-spacing: 0; }
.bp-sec { margin: 12px 0 6px; color: var(--neon); letter-spacing: 2px; font-size: 10px; text-transform: uppercase; }

#boneSelect, #boneSpinAxis {
  width: 100%; background: #0a131d; color: var(--text);
  border: 1px solid rgba(45,226,255,0.3); border-radius: 6px; padding: 5px; outline: none;
}
#boneSpinAxis { width: auto; }

.bp-row { display: flex; align-items: center; gap: 8px; margin: 5px 0; }
.bp-row label { width: 14px; color: var(--dim); }
.bp-row input[type=range] { flex: 1; accent-color: var(--neon); }
.bp-val { width: 38px; text-align: right; color: var(--neon); font-variant-numeric: tabular-nums; }
.bp-spin { gap: 6px; margin-top: 8px; }
.bp-spin label { width: auto; color: var(--text); display: flex; align-items: center; gap: 5px; }
.bp-spin input[type=range] { flex: 1; }

#boneReset {
  margin-top: 12px; width: 100%; padding: 7px;
  background: rgba(45,226,255,0.12); color: #eafdff;
  border: 1px solid rgba(45,226,255,0.4); border-radius: 6px; cursor: pointer;
  letter-spacing: 1px; transition: background 0.2s;
}
#boneReset:hover { background: rgba(45,226,255,0.25); }

@media (max-width: 720px) { #ctrlPanel { width: 200px; top: 10px; right: 10px; } }

/* ----------------------------------------------------------------- Errors */
#errbox {
  position: fixed;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  z-index: 60;
  max-width: 70vw;
  padding: 18px 22px;
  border: 1px solid var(--hot);
  border-radius: 10px;
  background: rgba(20, 8, 4, 0.92);
  color: #ffd9c4;
  font-size: 13px;
  line-height: 1.5;
}