/* ---------------------------------------------------------------------------
   Gimbal-policy replay for the AIOG page's Future Work section: the planner and
   the learned policy flying the same recorded 60 s, side by side.
   Scoped under .gp-demo. Colours follow the project-page variables: the
   baseline is muted, the learned policy carries the accent.
   --------------------------------------------------------------------------- */

.gp-demo {
  --gp-plan: #94a3b8;
  --gp-plan-ink: #64748b;
  --gp-sac: #2563eb;
  --gp-line: #e2e8f0;
  --gp-line-soft: #eef2f7;
  --gp-grid: #dbe3ec;
  --gp-ink: #1e293b;
  --gp-ink-dim: #64748b;
  --gp-ink-faint: #94a3b8;
  --gp-surface: #ffffff;
  --gp-surface-2: #f8fafc;

  border: 1px solid var(--gp-line);
  border-radius: var(--border-radius-lg);
  background: var(--gp-surface);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  text-align: left;
  font-size: 0.85rem;
  color: var(--gp-ink);
}

/* --- transport ------------------------------------------------------------ */

.gp-transport {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.7rem;
  background: var(--gp-surface-2);
  border-bottom: 1px solid var(--gp-line);
}

.gp-play {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border: 1px solid var(--gp-line);
  border-radius: 50%;
  background: var(--gp-surface);
  color: var(--gp-ink);
  font-size: 0.72rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
}

.gp-play:hover {
  border-color: var(--gp-sac);
  color: var(--gp-sac);
}

.gp-seek {
  flex: 1 1 auto;
  min-width: 90px;
  accent-color: var(--gp-sac);
}

.gp-time {
  flex: 0 0 auto;
  font-size: 0.72rem;
  color: var(--gp-ink-dim);
  font-variant-numeric: tabular-nums;
}

.gp-transport select {
  border: 1px solid var(--gp-line);
  border-radius: 6px;
  background: var(--gp-surface);
  color: var(--gp-ink-dim);
  font: inherit;
  font-size: 0.72rem;
  padding: 0.15rem 0.3rem;
}

/* --- the two lanes -------------------------------------------------------- */

.gp-lanes {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.gp-lane + .gp-lane {
  border-left: 1px solid var(--gp-line);
}

.gp-lane-head {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.6rem 0.75rem 0.45rem;
  flex-wrap: wrap;
}

.gp-swatch {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  flex: none;
  align-self: center;
}

.gp-lane-name {
  font-weight: 700;
  font-size: 0.86rem;
}

.gp-lane-sub {
  font-size: 0.7rem;
  color: var(--gp-ink-faint);
}

.gp-scene {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 11;
  border-top: 1px solid var(--gp-line-soft);
  background: linear-gradient(180deg, #fbfcfe 0%, #f2f5f9 100%);
}

.gp-demo canvas.gp-scene-cv {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: grab;
}

.gp-demo canvas.gp-scene-cv:active {
  cursor: grabbing;
}

/* the band is a summary strip under the scene now, not the main event */
.gp-band {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 7;
  border-top: 1px solid var(--gp-line-soft);
  border-bottom: 1px solid var(--gp-line-soft);
  background: var(--gp-surface);
}

.gp-demo canvas.gp-band-cv {
  display: block;
  width: 100%;
  height: 100%;
}

.gp-readout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem 0.7rem;
}

.gp-ro-lab {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gp-ink-faint);
  margin-bottom: 0.2rem;
}

.gp-ro-val {
  display: block;
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.gp-ro-val small {
  font-size: 0.72rem;
  font-weight: 700;
  margin-left: 0.08rem;
}

/* --- the two shared charts ------------------------------------------------ */

.gp-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--gp-line);
  background: var(--gp-surface-2);
}

.gp-chart + .gp-chart {
  border-left: 1px solid var(--gp-line);
}

.gp-chart {
  padding: 0.6rem 0.75rem 0.7rem;
}

.gp-chart h4 {
  margin: 0 0 0.35rem;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gp-ink-faint);
}

.gp-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.1rem 0.7rem;
  margin-bottom: 0.3rem;
  font-size: 0.66rem;
  color: var(--gp-ink-dim);
}

.gp-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  white-space: nowrap;
}

.gp-legend i {
  width: 13px;
  height: 0;
  border-top: 2px solid currentColor;
  flex: none;
}

.gp-legend .gp-k-plan { color: var(--gp-plan); }
.gp-legend .gp-k-sac { color: var(--gp-sac); }
.gp-legend .gp-k-ref { color: var(--gp-ink-faint); border-top-style: dashed; }

.gp-demo canvas.gp-chart-cv {
  display: block;
  width: 100%;
  height: 104px;
  cursor: crosshair;
}

.gp-foot {
  padding: 0.55rem 0.75rem 0.6rem;
  border-top: 1px solid var(--gp-line);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--gp-ink-dim);
}

.gp-status {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--gp-ink-dim);
}

.gp-demo:not(.is-ready) .gp-transport,
.gp-demo:not(.is-ready) .gp-lanes,
.gp-demo:not(.is-ready) .gp-charts,
.gp-demo:not(.is-ready) .gp-foot,
.gp-demo.is-ready .gp-status {
  display: none;
}

@media (max-width: 720px) {
  .gp-lanes,
  .gp-charts {
    grid-template-columns: 1fr;
  }
  .gp-lane + .gp-lane,
  .gp-chart + .gp-chart {
    border-left: none;
    border-top: 1px solid var(--gp-line);
  }
  .gp-scene {
    aspect-ratio: 16 / 11;
  }
}