/* Py, the lab bot: bigger, livelier, colourful, labelled, animated. Identical in every theme on purpose. */
.bot { width: 108px; height: 144px; z-index: 45; touch-action: none; user-select: none; -webkit-user-select: none; }
.bot::after { display: none !important; }
.bot-stage { position: absolute; inset: 0; perspective: 560px; }
.bot-bubble {
  position: absolute; z-index: 4; right: 0; top: -4px; max-width: 168px; width: max-content; padding: 5px 11px 6px; border-radius: 16px 16px 4px 16px;
  background: linear-gradient(135deg, #ffffff, #fff5fb 65%, #fef9c3); color: #0f172a; border: 2.5px solid #ff5da2;
  box-shadow: 0 6px 18px rgba(255, 93, 162, 0.5), 0 0 0 3px rgba(255, 212, 59, 0.65), 0 0 18px rgba(34, 211, 238, 0.45);
  font: 700 0.76rem/1.22 "Atkinson Hyperlegible", system-ui, sans-serif; text-align: left; pointer-events: none;
  animation: bubble-pop 360ms cubic-bezier(.3, 1.6, .5, 1);
}
.bot-bubble::after { content: ""; position: absolute; right: 18px; bottom: -9px; width: 12px; height: 12px; background: #fef9c3; border-right: 2.5px solid #ff5da2; border-bottom: 2.5px solid #ff5da2; transform: rotate(45deg) skew(8deg, 8deg); border-radius: 0 0 4px 0; }
.bot[data-side="left"] .bot-bubble { right: auto; left: 0; border-radius: 16px 16px 16px 4px; }
.bot[data-side="left"] .bot-bubble::after { right: auto; left: 18px; }
.bot.is-open .bot-bubble, .bot.is-dragging .bot-bubble { display: none; }
@keyframes bubble-pop { from { opacity: 0; transform: scale(0.6) translateY(8px); } to { opacity: 1; transform: none; } }
.bot-figure { position: absolute; left: 5px; bottom: 6px; width: 98px; height: 114px; margin: 0; transform-style: preserve-3d; animation: bot-idle 4.2s ease-in-out infinite; filter: drop-shadow(0 8px 12px rgba(15, 23, 42, 0.42)) drop-shadow(0 0 10px rgba(255, 93, 162, 0.35)); }
@keyframes bot-idle { 0%, 100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-6px) rotate(1.5deg); } }
.bot-svg { width: 100%; height: 100%; overflow: visible; display: block; }
.bot.is-open .bot-figure { filter: drop-shadow(0 0 14px #ffd43b) drop-shadow(0 0 24px #22d3ee) drop-shadow(0 0 30px #ff5da2); }
.bot-shadow { position: absolute; left: 20px; bottom: 2px; width: 68px; height: 10px; background: radial-gradient(ellipse at center, rgba(255, 93, 162, 0.45), rgba(0, 0, 0, 0.38)); border-radius: 50%; filter: blur(2px); animation: shadow-pulse 4.2s ease-in-out infinite; }
@keyframes shadow-pulse { 0%, 100% { transform: scaleX(0.92); } 50% { transform: scaleX(1.12); } }
.bot .bulb { transform-box: fill-box; transform-origin: center; animation: bulb 1.4s ease-in-out infinite; }
.bot .wave1, .bot .wave2 { opacity: 0; animation: signal 2.2s ease-out infinite; transform-box: fill-box; transform-origin: center bottom; }
.bot .wave2 { animation-delay: 0.5s; }
.bot .eye { transform-box: fill-box; transform-origin: center; animation: blink 5.2s infinite; }
.bot .eye-r { animation-delay: 0.04s; }
.bot .pupil { transform: translate(calc(var(--ex, 0) * 2.2px), calc(var(--ey, 0) * 1.6px)); transition: transform 90ms linear; }
.bot .arm-wave { transform-box: fill-box; transform-origin: 8% 90%; animation: arm 2.8s ease-in-out infinite; }
.bot .tail { transform-box: fill-box; transform-origin: 90% 10%; animation: tail 2.3s ease-in-out infinite; }
.bot .bot-orbit { transform-box: fill-box; transform-origin: center; animation: orbit-pulse 3.6s ease-in-out infinite; }
.bot .thruster { transform-box: fill-box; transform-origin: center top; animation: thruster-glow 0.9s ease-in-out infinite alternate; }
.bot .cursor { animation: cursor 1s steps(2) infinite; }
.bot .led1 { animation: led 1.1s steps(2) infinite; }
.bot .led2 { animation: led 1.1s steps(2) 0.22s infinite; }
.bot .led3 { animation: led 1.1s steps(2) 0.44s infinite; }
.bot .led4 { animation: led 1.1s steps(2) 0.66s infinite; }
.bot .led5 { animation: led 1.1s steps(2) 0.88s infinite; }
.bot.wave .bot-figure { animation: bot-wave 700ms ease; }
.bot.bounce .bot-figure { animation: bot-bounce 420ms ease; }
@keyframes bulb { 0%, 100% { transform: scale(1); filter: brightness(1); } 50% { transform: scale(1.38); filter: brightness(1.6); } }
@keyframes signal { 0% { opacity: 0.95; transform: scale(0.5); } 100% { opacity: 0; transform: scale(1.65); } }
@keyframes blink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(0.1); } }
@keyframes arm { 0%, 52%, 100% { transform: rotate(0); } 60% { transform: rotate(-40deg); } 68% { transform: rotate(12deg); } 76% { transform: rotate(-40deg); } 86% { transform: rotate(0); } }
@keyframes tail { 0%, 100% { transform: rotate(-7deg); } 50% { transform: rotate(11deg); } }
@keyframes orbit-pulse { 0%, 100% { transform: rotate(-6deg) scaleX(1); opacity: 0.78; } 50% { transform: rotate(6deg) scaleX(1.06); opacity: 1; } }
@keyframes thruster-glow { 0% { transform: scaleY(0.75); opacity: 0.55; } 100% { transform: scaleY(1.35); opacity: 0.95; } }
@keyframes cursor { 50% { opacity: 0; } }
@keyframes led { 50% { opacity: 0.25; } }
@media (prefers-reduced-motion: reduce) {
  .bot *, .bot-figure, .bot-bubble { animation: none !important; }
  .bot .wave1, .bot .wave2 { opacity: 0.5; }
}
@media print { #lab-bot, .howto-scrim { display: none !important; } }
button.bp-go { font: inherit; text-align: left; width: 100%; cursor: pointer; }

/* ---- Py outshines the screen: aura, sparkles, skins, size, mannerisms ---- */
#pb-head stop:first-child { stop-color: var(--py-a, #6bb0e6); }
#pb-head stop:last-child { stop-color: var(--py-b, #2f6aa3); }
.bot { width: calc(108px * var(--py-s, 1.18)); height: calc(144px * var(--py-s, 1.18)); pointer-events: none; }
.bot-stage, .bot-svg { pointer-events: auto; cursor: grab; }
.bot.is-dragging .bot-stage, .bot.is-dragging .bot-svg { cursor: grabbing; }
.bot-stage { inset: auto; left: 0; bottom: 0; width: 108px; height: 144px; transform: scale(var(--py-s, 1.18)); transform-origin: left bottom; }
.py-aura { position: absolute; left: -12px; bottom: -6px; width: 132px; height: 132px; border-radius: 50%; z-index: 0; pointer-events: none;
  background: conic-gradient(from 0deg, #ff5da2, #ffd43b, #34d399, #22d3ee, #a78bfa, #ff8fc3, #ff5da2); filter: blur(15px); opacity: 0.68; animation: py-spin 6s linear infinite; }
.bot-figure { z-index: 1; }
@keyframes py-spin { to { transform: rotate(360deg); } }
.py-sparks b { position: absolute; font-size: 15px; color: #ffd43b; text-shadow: 0 0 8px #ff5da2; pointer-events: none; opacity: 0; animation: py-twinkle 3s ease-in-out infinite; z-index: 2; }
.py-sparks b:nth-child(1) { left: -2px; top: 28px; } .py-sparks b:nth-child(2) { right: -2px; top: 54px; animation-delay: .75s; color: #7cf3ff; }
.py-sparks b:nth-child(3) { left: 6px; bottom: 30px; animation-delay: 1.5s; color: #ff8fc3; } .py-sparks b:nth-child(4) { right: 8px; top: 16px; animation-delay: 2.25s; color: #34d399; }
@keyframes py-twinkle { 0%, 100% { opacity: 0; transform: scale(.4) rotate(0); } 50% { opacity: 1; transform: scale(1.25) rotate(90deg); } }
html[data-fx="off"] .py-aura { animation: none; opacity: .35; filter: blur(10px); }
html[data-fx="off"] .py-sparks { display: none; }
html[data-fx="low"] .py-aura { animation: none; }
.bot.py-wave .bot-figure { animation: py-wave 1.2s ease; }
.bot.py-celebrate .bot-figure { animation: py-jump .5s ease-in-out 4; }
.bot.py-think .bot-figure { animation: py-think 1.6s ease-in-out; }
.bot.py-hint .bot-figure { animation: py-hint .45s ease-in-out 3; }
.bot.py-celebrate .py-aura { opacity: .98; }
.bot.py-hint .bulb { fill: #ffd43b; filter: drop-shadow(0 0 8px #ffd43b); }
@keyframes py-wave { 0%, 100% { transform: rotate(0); } 20% { transform: rotate(-12deg); } 40% { transform: rotate(10deg); } 60% { transform: rotate(-8deg); } 80% { transform: rotate(5deg); } }
@keyframes py-jump { 0%, 100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-22px) scale(1.08) rotate(6deg); } }
@keyframes py-think { 0%, 100% { transform: rotate(0); } 30%, 70% { transform: rotate(-9deg) translateY(-2px); } }
@keyframes py-hint { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.16); } }
.bot[data-mood="celebrate"]::after, .bot[data-mood="think"]::after { display: block !important; position: absolute; top: -6px; left: 4px; font-size: 22px; content: "🎉"; animation: none; z-index: 3; }
.bot[data-mood="think"]::after { content: "💭"; }
.bot[data-mood="hint"]::after { display: block !important; position: absolute; top: -8px; left: 4px; font-size: 22px; content: "💡"; z-index: 3; }
@media (prefers-reduced-motion: reduce) { .py-aura, .py-sparks b, .bot .bot-figure { animation: none !important; } .py-aura { opacity: .35; } .py-sparks { display: none; } }
/* panel */
.bp-quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 8px 0 4px; }
.bp-qa { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 58px; padding: 6px 4px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 24%, var(--bg)), var(--bg)); color: var(--ink); text-decoration: none; font: inherit; font-size: .82rem; font-weight: 700; cursor: pointer; transition: transform 120ms, border-color 120ms; }
.bp-qa span { font-size: 1.32rem; line-height: 1; } .bp-qa:hover, .bp-qa:focus-visible { border-color: var(--accent); transform: translateY(-1px); }
.bp-hint { margin: 8px 0 0; padding: 8px 10px; border-radius: 12px; border: 1px dashed var(--accent); font-size: .88rem; }
.py-custom { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 8px; } .py-custom summary { cursor: pointer; font-weight: 700; min-height: 40px; display: flex; align-items: center; }
.py-row { display: flex; align-items: center; gap: 8px; min-height: 40px; font-size: .9rem; } .py-row input[type=text], #py-name { flex: 1; min-height: 40px; padding: 4px 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font: inherit; }
.py-row input[type=checkbox] { width: 22px; height: 22px; }
.py-swatches { display: flex; gap: 8px; flex-wrap: wrap; } .py-sw { width: 40px; height: 40px; border-radius: 50%; border: 3px solid var(--line); cursor: pointer; } .py-sw.on { border-color: var(--ink); box-shadow: 0 0 0 3px var(--accent); }
.py-opt.on { background: var(--accent); color: var(--btn-ink); border-color: var(--accent); }

.bot.is-docked {
  width: 76px;
  height: 102px;
  --py-s: 0.66;
}
.bot.is-mini {
  width: 56px;
  height: 72px;
  --py-s: 0.48;
}
.bot.is-parked:not(.is-speaking) {
  visibility: hidden;
}
.bot.is-docked .bot-bubble,
.bot.is-docked .py-aura,
.bot.is-docked .py-sparks { opacity: 0; }
.bot.is-speaking { visibility: visible; opacity: 1; }
.bot.is-speaking .py-aura { opacity: 1; animation: py-spin 1.1s linear infinite; }
.bot.is-speaking .bot-figure { filter: drop-shadow(0 0 14px #22d3ee) drop-shadow(0 0 20px #ff5da2); }
.bot.is-speaking .arm-wave { animation-duration: 0.45s; }
.bot.is-speaking .mouth {
  transform-box: fill-box;
  transform-origin: center;
  animation: mouth-talk 160ms ease-in-out infinite;
}
.bot.is-speaking .led1,
.bot.is-speaking .led2,
.bot.is-speaking .led3,
.bot.is-speaking .led4,
.bot.is-speaking .led5 { animation: led 180ms step-end infinite; }
.bot-caption {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 4px);
  transform: translateX(-50%);
  max-width: 190px;
  padding: 4px 8px;
  border-radius: 8px;
  background: #12161c;
  color: #fff;
  font-size: 0.72rem;
  line-height: 1.3;
  pointer-events: none;
  z-index: 5;
}
.bot-caption:empty { display: none; }
@keyframes mouth-talk {
  50% { transform: scaleY(0.28) translateY(1px); }
}
.voice-picker {
  margin: 0 0 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg) 86%, var(--accent));
}
.voice-picker legend { font-weight: 700; padding: 0 6px; }
.voice-options { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.voice-options label {
  display: flex;
  gap: 6px;
  align-items: center;
  min-height: 40px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  cursor: pointer;
}
.voice-options label:has(input:checked) { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 40%, transparent); }
.voice-licence { margin: 6px 0 0; font-size: 0.82rem; color: var(--muted); }
.voice-credits { margin: 12px 0 0; padding: 12px 14px; border-radius: 14px; border: 1px solid var(--line); background: var(--bg); }
.voice-credits h3, .voice-credits h2 { margin: 0 0 8px; font-size: 1rem; }
.voice-credits p, .voice-credits li { font-size: 0.88rem; line-height: 1.45; }
.voice-credits ul { margin: 8px 0; padding-left: 1.2rem; }
@media (prefers-reduced-motion: reduce) {
  .bot.is-speaking .mouth,
  .bot.is-speaking .py-aura,
  .bot.is-speaking .arm-wave,
  .bot.is-speaking .led1 { animation: none !important; }
  .bot.is-speaking .bot-figure { filter: drop-shadow(0 0 8px #22d3ee); }
}