:root {
  --page: #060607;
  --ink: #f2f1ee;
  --dim: rgba(242, 241, 238, 0.55);
  --hairline: rgba(242, 241, 238, 0.22);
  --on-ink: #0b0b0d;
  --frost: rgba(255, 255, 255, 0.09);
  --glass: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.2),
    rgba(255, 255, 255, 0.05) 45%,
    rgba(255, 255, 255, 0.14)
  );
  --panel-line: rgba(255, 255, 255, 0.26);
  --control-bg: rgba(255, 255, 255, 0.07);

  --sans: 'Inter', 'Avenir Next', system-ui, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Consolas, monospace;

  color-scheme: dark;
  font: 14px/1.45 var(--sans);
  background: var(--page);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

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

html,
body,
#root {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--page);
  user-select: none;
}

button {
  font: inherit;
  color: inherit;
  text-transform: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.hand-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 60;
}
.gw-tscope {
  display: block;
  border-radius: 10px;
}
/* interior layout only — the glass wrapper (background/border/blur) is
   supplied by the parent's .gw-staff-card styles */
.gw-staff-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px 8px;
  box-sizing: border-box;
}

.gw-staff-svg {
  display: block;
  width: 100%;
  height: auto;
}

.gw-staff-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  opacity: 0.7;
  text-align: center;
}
/* ============================================================
   hts_01 — hand tracked synth.
   Black bezel page, rounded video stage with adaptive shade,
   lightweight liquid-glass panels, white ink throughout.
   ============================================================ */

.hts-page {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--page);
  padding: 18px 30px 54px; /* extra black bezel along the bottom */
  gap: 12px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink);
  text-transform: lowercase;
  font-weight: 400;
}

/* header row on the black bezel: title left, pills right */
.hts-header {
  flex: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hts-title {
  font-family: var(--sans);
  font-size: 15px;
}

/* ---- Stage: the rounded video area; everything lives inside ---- */
.hts-stage {
  position: relative;
  flex: 1;
  min-height: 0;
  border-radius: 22px;
  overflow: hidden;
  background: #000;
}

.video-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: #000;
}

.video-backdrop-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain; /* native aspect — never crop or zoom the feed */
  transform: scaleX(-1);
  z-index: 0;
}

.video-backdrop-fallback {
  position: absolute;
  inset: 0;
  background: #1a1b1e;
}

/* darken layer — opacity set by the shade slider (tone sheet).
   z-index above the video: the <video> is appended AFTER this div, so
   without it the live feed paints on top and no shade is visible. */
.video-shade {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: #000;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

/* GlassShape host: invisible registration marker (see GlassCanvas.tsx) */
.gw-fx {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

/* the liquid-glass WebGL layer: above video+shade, below every panel */
.gw-glass-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
}

/* shader-glassed elements: the canvas paints their glass body AND its
   border (borderEnabled in glass-preset.js) as one flattened layer — the
   DOM keeps only text, the hover ring, and the active outline */
.gw-lg {
  background: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  border-color: transparent !important;
  box-shadow: none !important;
}

/* activation + hover rings come from the shader (GlassCanvas passes a
   per-shape border weight) — the DOM never draws its own ring here */
.gw-lg.gw-card-live,
.gw-lg.gw-hot,
.gw-lg:hover {
  border-color: transparent !important;
  box-shadow: none !important;
  color: var(--ink) !important;
}

.gw-dim {
  color: var(--dim);
}

.gw-micro {
  font-family: var(--sans);
  font-size: 9px;
  color: var(--ink);
  opacity: 0.7;
  line-height: 1.6;
}

/* ---- Glass base: ONE element — gradient sheen + heavy backdrop blur +
   specular inset highlights + soft lift. Rounds/clips on its own radius. ---- */
.hts-pill,
.gw-card,
.gw-rail,
.gw-sheet,
.gw-scope-dock,
.gw-staff-float,
.hts-tutorial {
  position: relative;
  isolation: isolate;
  background: var(--glass);
  backdrop-filter: blur(26px) saturate(2) brightness(1.18);
  -webkit-backdrop-filter: blur(26px) saturate(2) brightness(1.18);
  border: 1px solid var(--panel-line);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    inset 0 -1px 0 rgba(255, 255, 255, 0.1),
    inset 0 0 18px rgba(255, 255, 255, 0.07),
    0 8px 24px rgba(0, 0, 0, 0.35);
}

/* active glass elements keep the same glass and bolden the outline:
   white border + 1px inset ring (2px total), never a solid fill */
.hts-pill.gw-active,
.gw-card.gw-card-live {
  background: var(--glass) !important;
  border-color: var(--ink) !important;
  box-shadow:
    inset 0 0 0 1px var(--ink),
    inset 0 0 18px rgba(255, 255, 255, 0.07),
    0 8px 24px rgba(0, 0, 0, 0.35) !important;
  color: var(--ink) !important;
}

.gw-staff-float {
  border-radius: 12px;
}

/* ---- Pills (in the bezel header) ---- */
.hts-pills {
  display: flex;
  gap: 8px;
}

.hts-pill {
  padding: 8px 16px;
  border-radius: 99px;
  font-size: 12px;
}

/* ---- Melody ruler along the top ---- */
.gw-ruler-wrap {
  position: absolute;
  top: 22px;
  /* right-aligned: runs all the way to the stage's right edge */
  left: 24%;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 20;
}

.gw-ruler {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-top: 3px;
}

.gw-ruler::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--ink);
  opacity: 0.9;
}

.gw-ruler-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  width: 4%;
  font-size: 9px;
  color: var(--ink);
}

.gw-ruler-tick {
  width: 1px;
  height: 7px;
  background: var(--ink);
  opacity: 0.45;
}

.gw-ruler-root .gw-ruler-tick {
  height: 13px;
  opacity: 1;
}

.gw-ruler-off {
  opacity: 0.35;
}

.gw-ruler-hit {
  font-size: 10.5px;
  opacity: 1;
}

.gw-ruler-hit .gw-ruler-tick {
  width: 3px;
  height: 17px;
  opacity: 1;
}

/* ---- Tab rail (liquid glass, hugging the right edge) ---- */
.gw-rail {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 5px;
  border-radius: 14px;
  z-index: 40;
}

.gw-tab {
  writing-mode: vertical-rl;
  padding: 14px 8px;
  border-radius: 9px;
  font-size: 11px;
  color: var(--dim);
  border: 1px solid transparent;
  transition: all 0.15s;
}

.gw-tab-open {
  background: var(--ink);
  color: var(--on-ink);
}

/* ---- Sheets ---- */
.gw-sheet {
  position: absolute;
  right: 62px;
  top: 70px;
  /* stop above the scope dock (bottom 16 + ~134 tall + gap) */
  bottom: 162px;
  width: 0;
  overflow: hidden;
  border-radius: 16px;
  border-width: 0;
  transition: width 0.38s cubic-bezier(0.32, 0.72, 0, 1), border-width 0s 0s;
  z-index: 35;
}

.gw-sheet-open {
  width: 312px;
  border-width: 1px;
}

.gw-sheet-body {
  width: 312px;
  height: 100%;
  padding: 18px 18px 22px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.gw-sheet-title {
  font-size: 11px;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 8px;
}

.gw-sheet-label {
  font-size: 8.5px;
  color: var(--dim);
  margin-top: 6px;
}

.gw-sheet-note {
  font-size: 8.5px;
  line-height: 1.7;
  color: var(--dim);
  margin-top: 6px;
}

/* ---- Pills / buttons ---- */
.gw-pill {
  padding: 7px 10px;
  border-radius: 7px;
  border: 1px solid var(--hairline);
  background: var(--control-bg);
  font-family: var(--sans);
  font-size: 10px;
  color: var(--ink);
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.gw-active {
  background: var(--ink) !important;
  border-color: var(--ink) !important;
  color: var(--on-ink) !important;
}

.gw-active .gw-dim {
  color: var(--on-ink);
  opacity: 0.65;
}

.gw-hot {
  border-color: var(--ink) !important;
}

.gw-play {
  padding: 12px 0;
  border-radius: 9px;
  border: 1px solid var(--ink);
  font-family: var(--sans);
  font-size: 11px;
}

.gw-slot-row,
.gw-wave-row,
.gw-oct-row,
.gw-cam-row {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  align-items: center;
}

.gw-root-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
}

.gw-qual-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
}

.gw-genre-list,
.gw-preset-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.gw-genre {
  display: flex;
  justify-content: space-between;
}

.gw-oct-val {
  font-size: 12px;
  min-width: 56px;
  text-align: center;
}

/* ---- BPM / shade bars ---- */
.gw-bpm-bar {
  position: relative;
  flex: none; /* else flexbox crushes it to fit an overflowing sheet */
  height: 26px;
  border: 1px solid var(--hairline);
  border-radius: 7px;
  background: var(--control-bg);
  cursor: ew-resize;
  touch-action: none;
  overflow: hidden;
}

.gw-bpm-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: var(--ink);
}

/* ---- Knobs ---- */
.gw-knob-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px 4px;
}

.gw-knob {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 2px;
  border-radius: 7px;
  border: 1px solid transparent;
  touch-action: none;
  cursor: ns-resize;
}

.gw-knob.gw-hot {
  border-color: var(--ink);
}

.gw-knob-svg {
  display: block;
  overflow: visible;
}

.gw-knob-ring {
  fill: transparent;
  stroke: var(--ink);
  stroke-width: 2.5;
}

.gw-knob-needle {
  stroke: var(--ink);
  stroke-width: 3;
}

.gw-knob-tick {
  stroke: var(--dim);
  stroke-width: 2;
}

.gw-knob-label {
  font-size: 8px;
}

.gw-knob-readout {
  font-size: 8px;
  color: var(--dim);
}

/* ---- Piano voicing editor ---- */
.gw-piano {
  position: relative;
  display: flex;
  height: 84px;
  border: 1px solid var(--hairline);
  border-radius: 7px;
  overflow: hidden;
  background: var(--control-bg);
  flex: none;
}

.gw-pkey-w {
  flex: 1;
  border-right: 1px solid rgba(10, 10, 12, 0.35);
  background: rgba(255, 255, 255, 0.82);
  transition: background 0.08s;
}

.gw-pkey-w:last-of-type {
  border-right: none;
}

.gw-pkey-w.gw-pkey-on {
  background: #3b82f6;
}

.gw-pkey-b {
  position: absolute;
  top: 0;
  width: 4.2%;
  height: 55%;
  background: #0b0b0d;
  border: 1px solid #0b0b0d;
  border-radius: 0 0 3px 3px;
  z-index: 2;
  transition: background 0.08s;
}

.gw-pkey-b.gw-pkey-on {
  background: #3b82f6;
  border-color: #3b82f6;
}

.gw-piano-range {
  text-align: center;
  display: block;
}

/* ---- Chord cards along the bottom ---- */
.gw-chords {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: flex;
  gap: 10px;
  z-index: 20;
  max-width: calc(100% - 300px);
  flex-wrap: wrap;
}

.gw-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  width: 138px;
  padding: 9px 12px;
  border-radius: 12px;
  text-align: left;
  transition: background 0.12s, color 0.12s;
}

.gw-card-finger {
  font-size: 8.5px;
  color: var(--dim);
}

.gw-card-name {
  font-family: var(--sans);
  font-size: 16px;
}

/* ---- Scope dock ---- */
.gw-scope-dock {
  position: absolute;
  right: 62px;
  bottom: 16px;
  z-index: 20;
  padding: 6px;
  border-radius: 13px;
}

/* ---- Floating staff card ---- */
.gw-staff-float {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 25;
  pointer-events: none;
  /* no transform transition: the glass canvas reads this element's rect per
     frame, and a css tween makes the two layers visibly shear apart */
  will-change: transform;
}

.gw-staff-card {
  width: 186px;
  color: var(--ink);
}

.gw-staff-anchored {
  left: 16px;
  bottom: 96px;
  top: auto;
  transform: none;
}

/* ---- Tutorial overlay ---- */
.hts-tutorial {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(420px, 80%);
  padding: 20px 22px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 45;
  font-size: 11px;
  line-height: 1.7;
}

/* ---- press feedback ---- */
.hts-page button:active {
  transform: scale(0.97);
}

/* ---- Mouse hover (hand-cursor hover uses .gw-hot, camera only) ---- */
@media (hover: hover) {
  .gw-pill:hover,
  .gw-tab:hover,
  .gw-play:hover,
  .gw-card:hover,
  .gw-knob:hover,
  .gw-pkey-w:hover,
  .gw-pkey-b:hover {
    border-color: var(--ink);
  }
}

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .gw-ruler-wrap {
    left: 18%;
    right: 12px;
  }
  .gw-ruler-name {
    font-size: 7px;
  }
  .gw-card {
    width: 112px;
  }
  .gw-card-name {
    font-size: 13px;
  }
  .gw-sheet-open,
  .gw-sheet-body {
    width: 258px;
  }
  .gw-chords {
    max-width: calc(100% - 40px);
  }
  .gw-scope-dock {
    display: none;
  }
}