/* UniTac-VAE project page: additions on top of the NeRFies template (bulma + index.css). */

:root {
  --ink: #1d1d1f;
  --muted: #5f6368;
  --line: #e4e2dd;
  --paper: #ffffff;
  --tint: #f7f6f3;
  --accent: #c8352b;          /* PLA red of the replicas */
  --gelsight: #e8a33d;
  --digit: #437342;
  --papill: #3291b6;
  --xela: #c5444a;
  --depth: #6b4c9a;
}

html { scroll-behavior: smooth; }
body { color: var(--ink); background: var(--paper); }
a { color: var(--accent); }
a:hover { color: #9e2820; }

/* ---------- navbar ---------- */
.navbar { border-bottom: 1px solid var(--line); }
.navbar-item { font-family: 'Google Sans', sans-serif; }

/* ---------- hero ---------- */
.publication-title.unitac-name {
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 0.6rem !important;
}
.unitac-name span { color: var(--accent); }
.publication-subtitle {
  font-family: 'Google Sans', sans-serif;
  font-size: clamp(1.15rem, 2.6vw, 1.75rem);
  line-height: 1.3;
  color: var(--ink);
  max-width: 820px;
  margin: 0 auto 1.4rem;
}
.publication-authors a { color: var(--accent) !important; }
.publication-venue-line {
  font-family: 'Google Sans', sans-serif;
  font-size: 1.1rem;
  margin-top: 0.4rem;
  color: var(--muted);
}
.publication-venue-line b { color: var(--ink); }
.publication-links { margin-top: 1.2rem; }
.publication-links .button { font-family: 'Google Sans', sans-serif; }
.publication-links .button .icon svg { width: 1.05em; height: 1.05em; fill: currentColor; }

/* ---------- generic sections ---------- */
.section.tinted { background: var(--tint); }
.section .title.is-3 { font-family: 'Google Sans', sans-serif; letter-spacing: -0.01em; }
.section-lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 760px;
  margin: -0.6rem auto 1.8rem;
}
.figure-caption { color: var(--muted); font-size: 0.92rem; margin-top: 0.6rem; }
.rounded-media { border-radius: 10px; display: block; width: 100%; }
.teaser-video { border-radius: 10px; width: 100%; display: block; background: #eee; }

.tldr {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.6rem;
}
.tldr > div {
  background: var(--tint);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  font-size: 0.98rem;
}
.tldr b { display: block; font-family: 'Google Sans', sans-serif; font-size: 1.05rem; margin-bottom: 0.2rem; }

.stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.8rem;
  margin: 1.5rem 0 2rem;
}
.stats > div { text-align: center; padding: 0.8rem 0.3rem; border-top: 2px solid var(--ink); }
.stats .num { font-family: 'Google Sans', sans-serif; font-size: 1.9rem; line-height: 1.1; }
.stats .lbl { color: var(--muted); font-size: 0.82rem; }

.method-steps { counter-reset: step; }
.method-steps li { list-style: none; position: relative; padding-left: 2.4rem; margin-bottom: 0.9rem; }
.method-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; left: 0; top: 0.05rem;
  width: 1.6rem; height: 1.6rem; border-radius: 50%;
  background: var(--ink); color: #fff;
  font: 600 0.9rem/1.6rem 'Google Sans', sans-serif; text-align: center;
}

.sensor-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.2rem; }
.sensor-card { text-align: center; }
.sensor-card img { height: 92px; object-fit: contain; margin-bottom: 0.4rem; }
.sensor-card .name { font-family: 'Google Sans', sans-serif; font-weight: 600; }
.sensor-card .kind { font-size: 0.85rem; color: var(--muted); }

table.paper-table { font-size: 0.92rem; margin: 0 auto; }
.table.paper-table th:not([align]), .table.paper-table td { text-align: center; vertical-align: middle; white-space: nowrap; }
.table.paper-table tbody tr td:first-child, .table.paper-table thead tr:last-child th:first-child { text-align: left; }
table.paper-table td.ours, table.paper-table th.ours { background: #fbeceb; }
table.paper-table tr.avg td { font-style: italic; border-bottom-width: 2px; }
.table-wrap { overflow-x: auto; }

/* ---------- interactive: translator ---------- */
.demo-panel { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 1.2rem; }
.ctl { min-width: 0; }
.ctl-label {
  font: 600 0.75rem 'Google Sans', sans-serif; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); margin-bottom: 0.35rem;
}
.pills { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.pill {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 999px; padding: 0.3rem 0.85rem; cursor: pointer;
  font: 0.92rem 'Google Sans', sans-serif;
}
.pill:hover { border-color: #bbb; }
.pill[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }


.object-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; margin-bottom: 1.1rem; }
.object-btn {
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); cursor: pointer;
  padding: 0.85rem 0.5rem; font: 600 1.02rem 'Google Sans', sans-serif;
}
.object-btn:hover { border-color: #bbb; background: var(--tint); }
.object-btn[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.viewer {
  position: relative; aspect-ratio: 1 / 1; width: 100%; overflow: hidden;
  background: radial-gradient(ellipse at 50% 40%, #ffffff 0%, var(--tint) 75%);
  border: 1px solid var(--line); border-radius: 10px;
}
.viewer canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.viewer canvas:active { cursor: grabbing; }
.viewer-markers { position: absolute; inset: 0; pointer-events: none; }
.marker-label {
  position: absolute; left: 0; top: 0; margin: -1.55rem 0 0 0.2rem; pointer-events: auto;
  width: 1.25rem; height: 1.25rem; border-radius: 50%; padding: 0; cursor: pointer;
  border: 2px solid var(--ink); background: #fff; color: var(--ink);
  font: 600 0.72rem/1 'Google Sans', sans-serif; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
  transition: opacity 0.15s;
}
.marker-label[aria-pressed="true"] { background: var(--ink); color: #fff; }
.marker-label.hidden-side { opacity: 0.35; }
.viewer-hint {
  position: absolute; left: 0.5rem; bottom: 0.35rem; pointer-events: none;
  font: 0.72rem 'Google Sans', sans-serif; color: var(--muted);
}
.viewer-reset {
  position: absolute; right: 0.35rem; bottom: 0.35rem; width: 1.6rem; height: 1.6rem; padding: 0; border-radius: 6px; font-size: 0.75rem;
  border: 1px solid var(--line); background: #fff; color: var(--muted); cursor: pointer;
}
.viewer-reset:hover { color: var(--ink); border-color: #bbb; }
.location-row { gap: 0.25rem; }
.location-row .pill { padding: 0.05rem 0.55rem; font-size: 0.82rem; }
.source-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0.5rem; margin-bottom: 1.2rem; }
.source-btn {
  border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer;
  padding: 0.5rem 0.3rem 0.4rem; display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
  font: 0.88rem 'Google Sans', sans-serif; color: var(--ink);
  border-bottom: 4px solid var(--line);
}
.source-btn img, .source-btn .depth-icon { height: 44px; width: 44px; object-fit: contain; }
.source-btn .depth-icon {
  border-radius: 6px;
  background: radial-gradient(ellipse at 40% 45%, #1b0c41 0 18%, #6a176e 30%, #d44842 48%, #fca50a 64%, #fcfdbf 78%);
}
.source-btn[aria-pressed="true"] { border-color: var(--ink); border-bottom-color: var(--c, var(--ink)); background: var(--tint); }
.source-btn[data-mod=gelsight] { --c: var(--gelsight); }
.source-btn[data-mod=digit] { --c: var(--digit); }
.source-btn[data-mod=papill] { --c: var(--papill); }
.source-btn[data-mod=xela] { --c: var(--xela); }
.source-btn[data-mod=depth] { --c: var(--depth); }

.demo-stage { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 4fr); gap: 1.2rem; align-items: start; }
.stage-input { background: var(--tint); border-radius: 12px; padding: 0.7rem; text-align: center; }
.stage-left { display: grid; gap: 0.8rem; }
.stage-input .tile { width: 62%; margin: 0 auto 0.3rem; }
.stage-input .head { font: 600 0.95rem 'Google Sans', sans-serif; margin-bottom: 0.4rem; }
.stage-input .arrow { font-size: 1.2rem; color: var(--muted); }
.where-head { display: flex; align-items: center; justify-content: space-between; gap: 0.4rem; margin-bottom: 0.35rem; }
.where-head .ctl-label { margin: 0; }
.stage-targets { display: grid; grid-template-columns: auto repeat(4, minmax(0, 1fr)); gap: 0.5rem 0.6rem; align-items: center; }
.stage-targets .colhead { font: 600 0.9rem 'Google Sans', sans-serif; text-align: center; padding-bottom: 0.1rem; }
.stage-targets .rowhead {
  writing-mode: vertical-rl; transform: rotate(180deg);
  font: 600 0.75rem 'Google Sans', sans-serif; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted);
  text-align: center;
}
.tile {
  aspect-ratio: 3 / 4; width: 100%;
  background-repeat: no-repeat; background-size: 500% 600%;
  border-radius: 6px;
}
.tile.loading { opacity: 0.35; transition: opacity 0.15s; }
.demo-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; font-size: 0.85rem; color: var(--muted); margin-top: 1rem; }
.demo-legend .sw { display: inline-block; width: 2.2em; height: 0.8em; border-radius: 3px; vertical-align: middle; margin-right: 0.35em; }

/* ---------- interactive: virtual sensor ---------- */
.scan-viewer { aspect-ratio: 16 / 7; margin-bottom: 1.1rem; }
.scan-viewer canvas { cursor: grab; }
.scan-viewer canvas:active { cursor: grabbing; }
.scan-viewer:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.scan-hud { position: absolute; right: 0.6rem; bottom: 0.5rem; display: flex; align-items: center; gap: 0.6rem; }
.scan-play {
  width: 2.2rem; height: 2.2rem; border-radius: 50%; border: 1px solid var(--ink);
  background: var(--ink); color: #fff; cursor: pointer; flex: none;
}
.scan-readout { font: 600 0.9rem 'Google Sans', sans-serif; color: var(--muted); }
.scan-note { font-size: 0.82rem; color: var(--muted); margin-top: 0.8rem; }
.scan-strip {
  display: grid; grid-template-columns: minmax(0, 1fr) auto repeat(4, minmax(0, 1fr));
  gap: 0.6rem; align-items: center;
}
.scan-cell { text-align: center; }
.scan-cell .colhead { font: 600 0.9rem 'Google Sans', sans-serif; margin-bottom: 0.3rem; }
.scan-cell .sub { font-size: 0.78rem; color: var(--muted); margin-top: 0.2rem; }
.scan-cell .tile { background-size: 1100% 1100%; }
.scan-input { background: var(--tint); border-radius: 10px; padding: 0.4rem; }
.scan-arrow { color: var(--muted); font-size: 1.2rem; }

/* ---------- interactive: latent explorer ---------- */
.latent-wrap { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 1.1fr); gap: 1.2rem; align-items: start; }
.latent-canvas-box { position: relative; aspect-ratio: 1 / 1; width: 100%; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
.latent-canvas-box canvas { width: 100%; height: 100%; display: block; border-radius: 12px; }
.latent-side .ctl { margin-bottom: 1rem; }
.chip {
  display: inline-flex; align-items: center; gap: 0.4rem;
  border: 1px solid var(--line); border-radius: 999px; padding: 0.2rem 0.7rem 0.2rem 0.45rem;
  margin: 0 0.3rem 0.35rem 0; background: #fff; font: 0.88rem 'Google Sans', sans-serif; color: var(--ink);
}
.chip .dot { width: 0.8rem; height: 0.8rem; border-radius: 50%; }

/* ---------- Q&A, BibTeX, footer ---------- */
.qa details { border-bottom: 1px solid var(--line); padding: 0.75rem 0; }
.qa summary { cursor: pointer; font: 600 1.02rem 'Google Sans', sans-serif; }
.qa details p { margin-top: 0.5rem; color: #333; }

.bibtex-box { position: relative; }
.bibtex-box pre { background: var(--tint); border-radius: 10px; font-size: 0.85rem; }
.copy-btn { position: absolute; top: 0.6rem; right: 0.6rem; }

.footer { background: var(--tint); }

/* ---------- small screens ---------- */
@media (max-width: 1023px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
  .latent-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .tldr { grid-template-columns: 1fr; }
  .sensor-row { grid-template-columns: repeat(2, 1fr); }
  .object-row { grid-template-columns: repeat(2, 1fr); gap: 0.4rem; }
  .object-btn { padding: 0.7rem 0.4rem; font-size: 0.95rem; }
  .viewer { aspect-ratio: 4 / 3; }
  .scan-strip { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.3rem; }
  .scan-arrow { display: none; }
  .scan-cell .colhead { font-size: 0.68rem; }
  .scan-cell .sub { display: none; }
  .stage-input .tile { width: 100%; margin: 0; }
  .source-row { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.3rem; }
  .source-btn { font-size: 0.72rem; padding: 0.35rem 0.1rem; }
  .source-btn img, .source-btn .depth-icon { height: 30px; width: 30px; }
  .demo-stage { grid-template-columns: 1fr; }
  .stage-input { display: grid; grid-template-columns: 90px 1fr; gap: 0.8rem; align-items: center; text-align: left; }
  .stage-input .arrow { display: none; }
  .stage-targets { gap: 0.3rem; }
  .stage-targets .colhead { font-size: 0.72rem; }
}
.table.paper-table td.left, .table.paper-table th.left { text-align: left; }