:root {
  --accent: #7cf0ff;
  --accent2: #c58bff;
  --ink: #eceffd;
  --dim: #98a1c6;
  --panel: rgba(9, 11, 24, .74);
  --line: rgba(255, 255, 255, .09);
  --r: 14px;
  color-scheme: dark;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; overflow: hidden; background: #05060d; color: var(--ink);
  font: 14px/1.4 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
button { font: inherit; color: inherit; }
h3 { margin: 18px 0 8px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--dim); font-weight: 600; }
h3:first-child { margin-top: 4px; }

#gl { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#gl:active { cursor: grabbing; }

/* ---------- glass surfaces ---------- */
#panel, #dock, #hud .brand, #info, #toast {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 10px 40px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .06);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
}
body.lite #panel, body.lite #dock, body.lite #hud .brand, body.lite #info, body.lite #toast {
  -webkit-backdrop-filter: none; backdrop-filter: none; background: rgba(9, 11, 24, .9);
}

/* ---------- HUD ---------- */
#hud { position: fixed; top: 12px; left: 12px; display: flex; flex-direction: column; gap: 8px; align-items: flex-start; pointer-events: none; z-index: 5; }
#hud .brand { display: flex; align-items: center; gap: 10px; padding: 8px 14px 8px 10px; border-radius: 999px; }
#hud .brand b { font-weight: 700; letter-spacing: .04em;
  background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
#info { padding: 6px 12px; border-radius: 999px; font-size: 12px; color: var(--dim); font-variant-numeric: tabular-nums; max-width: calc(100vw - 24px); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#info b { color: var(--ink); font-weight: 600; }

#progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 9; opacity: 0; transition: opacity .25s; pointer-events: none; }
#progress.on { opacity: 1; }
#progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent2)); box-shadow: 0 0 12px var(--accent); transition: width .12s linear; }

/* ---------- panel ---------- */
#panel { position: fixed; top: 12px; right: 12px; bottom: 12px; width: 340px; border-radius: 18px; z-index: 6; display: flex; flex-direction: column; overflow: hidden;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), opacity .25s; }
body.panel-closed #panel { transform: translateX(calc(100% + 24px)); opacity: 0; pointer-events: none; }
.tabs { display: flex; padding: 6px; gap: 4px; border-bottom: 1px solid var(--line); }
.tabs button { flex: 1; border: 0; background: transparent; padding: 8px 4px; border-radius: 10px; color: var(--dim); cursor: pointer; font-weight: 600; font-size: 13px; transition: .2s; }
.tabs button:hover { color: var(--ink); background: rgba(255, 255, 255, .05); }
.tabs button[aria-selected="true"] { color: #05060d; background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.pages { flex: 1; overflow-y: auto; padding: 12px 14px 20px; scrollbar-width: thin; scrollbar-color: rgba(255, 255, 255, .2) transparent; }
.page[hidden] { display: none; }

/* fractal picker */
.frgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.fr { position: relative; padding: 0; border: 1px solid var(--line); background: #0b0d1c; border-radius: 12px; overflow: hidden; cursor: pointer; aspect-ratio: 1; transition: transform .2s, border-color .2s, box-shadow .2s; }
.fr canvas { width: 100%; height: 100%; display: block; opacity: .92; transition: transform .5s, opacity .2s; }
.fr span { position: absolute; left: 0; right: 0; bottom: 0; padding: 14px 4px 4px; font-size: 11px; font-weight: 600; text-align: center; background: linear-gradient(transparent, rgba(0, 0, 0, .8)); }
.fr:hover canvas { transform: scale(1.08); opacity: 1; }
.fr.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 0 18px -2px var(--accent); }

/* chips & segmented */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--line); background: rgba(255, 255, 255, .04); padding: 5px 11px; border-radius: 999px; font-size: 12px; cursor: pointer; transition: .2s; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: color-mix(in srgb, var(--accent) 22%, transparent); border-color: var(--accent); color: #fff; }
.seg { display: flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin: 4px 0 8px; }
.seg button { flex: 1; border: 0; background: transparent; padding: 7px 4px; font-size: 12px; cursor: pointer; color: var(--dim); transition: .2s; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: color-mix(in srgb, var(--accent) 24%, transparent); color: #fff; }
.seg button:hover { color: #fff; }

.btn { width: 100%; margin: 6px 0; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--line); background: rgba(255, 255, 255, .05); cursor: pointer; font-weight: 600; transition: .2s; }
.btn:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }
.lbl { font-size: 12px; color: var(--dim); margin: 8px 0 2px; }

/* palettes */
.pals { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.pal { border: 1px solid var(--line); border-radius: 10px; padding: 0; cursor: pointer; background: transparent; overflow: hidden; text-align: left; transition: transform .2s, border-color .2s; }
.pal i { display: block; height: 26px; }
.pal span { display: block; padding: 3px 8px; font-size: 11px; color: var(--dim); }
.pal:hover { transform: translateY(-1px); }
.pal.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.pal.on span { color: #fff; }

/* sliders */
.row { margin: 8px 0 10px; }
.row[hidden], .tg[hidden], .btn[hidden], .seg[hidden], .lbl[hidden] { display: none; }
.lab { display: flex; justify-content: space-between; font-size: 12.5px; }
.lab span { color: var(--ink); }
.lab output { color: var(--dim); font-variant-numeric: tabular-nums; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 22px; background: transparent; margin: 0; cursor: pointer; }
input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 99px; background: linear-gradient(90deg, var(--accent) var(--pct, 50%), rgba(255, 255, 255, .13) var(--pct, 50%)); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -5px; border-radius: 50%; background: #fff; border: 0; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 50%, transparent), 0 2px 8px #0009; transition: transform .15s; }
input[type=range]:active::-webkit-slider-thumb { transform: scale(1.25); }
input[type=range]::-moz-range-track { height: 6px; border-radius: 99px; background: rgba(255, 255, 255, .13); }
input[type=range]::-moz-range-progress { height: 6px; border-radius: 99px; background: var(--accent); }
input[type=range]::-moz-range-thumb { width: 14px; height: 14px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 50%, transparent); }

/* toggles */
.tg { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; cursor: pointer; font-size: 13px; }
.tg i { position: relative; width: 38px; height: 22px; border-radius: 99px; background: rgba(255, 255, 255, .14); transition: .25s; flex: none; }
.tg i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: .25s; }
.tg[aria-checked="true"] i { background: var(--accent); }
.tg[aria-checked="true"] i::after { transform: translateX(16px); }

pre#stats { margin: 6px 0; padding: 10px; border-radius: 10px; background: rgba(0, 0, 0, .35); border: 1px solid var(--line); font: 11.5px/1.55 ui-monospace, Menlo, Consolas, monospace; color: var(--dim); white-space: pre-wrap; }
.hint { font-size: 11.5px; color: var(--dim); margin: 6px 0; }

body[data-render="bulb"] .only2d { display: none !important; }
body[data-render="2d"] .only3d { display: none !important; }

/* ---------- dock ---------- */
#dock { position: fixed; bottom: 14px; left: 50%; translate: -50% 0; display: flex; gap: 4px; padding: 6px; border-radius: 999px; z-index: 7; transition: right .35s; }
#dock button { width: 44px; height: 44px; border-radius: 50%; border: 0; background: transparent; display: grid; place-items: center; cursor: pointer; color: var(--ink); transition: .2s; }
#dock button:hover { background: rgba(255, 255, 255, .09); color: var(--accent); transform: translateY(-2px); }
#dock button[aria-pressed="true"] { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #05060d; }
#dock svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
body:not(.panel-closed) #dock { left: calc(50% - 176px); }

#toast { position: fixed; top: 14px; left: 50%; translate: -50% -80px; padding: 9px 18px; border-radius: 999px; font-size: 13px; z-index: 20; opacity: 0; transition: .4s cubic-bezier(.2, .8, .2, 1); pointer-events: none; }
#toast.on { translate: -50% 0; opacity: 1; }

body.ui-hidden #panel, body.ui-hidden #hud, body.ui-hidden #dock { opacity: 0; pointer-events: none; }
body.ui-hidden #dock { transform: translateY(80px); }
#panel, #hud, #dock { transition: opacity .3s, transform .35s cubic-bezier(.2, .8, .2, 1); }

/* ---------- splash / fallback ---------- */
#splash { position: fixed; inset: 0; z-index: 50; display: grid; place-content: center; justify-items: center; gap: 18px; background: radial-gradient(circle at 50% 40%, #12142b, #05060d 70%); transition: opacity .6s .1s, visibility .6s .1s; color: var(--dim); letter-spacing: .08em; }
#splash.gone { opacity: 0; visibility: hidden; }
#splash[hidden] { display: none; }
.orb { width: 74px; height: 74px; border-radius: 50%; background: conic-gradient(from 0deg, var(--accent), var(--accent2), var(--accent)); -webkit-mask: radial-gradient(circle, transparent 54%, #000 56%); mask: radial-gradient(circle, transparent 54%, #000 56%); animation: spin 1.2s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
#nogl { position: fixed; inset: 0; z-index: 60; display: grid; place-content: center; text-align: center; padding: 24px; background: #05060d; }
#nogl[hidden] { display: none; }

/* ---------- small screens: bottom sheet ---------- */
@media (max-width: 760px) {
  #panel { top: auto; left: 8px; right: 8px; bottom: 8px; width: auto; height: 48vh; }
  body.panel-closed #panel { transform: translateY(calc(100% + 16px)); }
  #dock { bottom: auto; top: 10px; left: auto; right: 8px; translate: 0 0; flex-direction: column; border-radius: 26px; }
  body:not(.panel-closed) #dock { left: auto; }
  #dock button { width: 40px; height: 40px; }
  #info { font-size: 11px; max-width: calc(100vw - 80px); }
  #toast { top: 60px; }
}
@media (prefers-reduced-motion: reduce) {
  .orb { animation-duration: 3s; }
  * { scroll-behavior: auto !important; }
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }