/* ProPolar project page styles.
 * Builds on index.css (Academic Project Page Template) and the inline styles of the TAG page.
 * Palette: navy accent from TAG, rank salmon and schedule blue from Figure 1 of the paper,
 * light blue for ProPolar cells as in the paper tables.
 */
:root {
  --pp-navy: #17357a;
  --pp-ink: #1e293b;
  --pp-muted: #5b6475;
  --pp-rank: #cf6d64;
  --pp-rank-soft: #e8a9a3;
  --pp-lr: #4a80c6;
  --pp-lr-soft: #9dbbe6;
  --pp-ours: #eaf2fc;
  --pp-ours-deep: #d9e7f8;
  --pp-rule: #e5e8ee;
  --pp-panel: #f5f7fb;
}

[hidden] {
  display: none !important;
}

/* Bulma's .container uses auto side margins, so as a flex item of a .hero section it
   shrinks to fit its content. A wide equation or table then widens the whole column past
   the viewport. A definite width keeps the column at page width and lets wide content
   scroll inside its own box. */
.hero > .container {
  width: 100%;
}

.section-tight {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

/* Section titles: gradient runs from the rank color to the schedule color of Figure 1.
   Left-aligned titles get a left-aligned rule. */
.title.is-3::after {
  background: linear-gradient(90deg, var(--pp-rank-soft), var(--pp-lr-soft));
}

.content > h2.title.is-3::after {
  left: 0;
  transform: none;
}

.icon-row {
  margin-top: 1rem;
}

.publication-authors .author-name {
  color: var(--primary-color);
  font-weight: 600;
}

/* Code button before release: same shape as the other buttons, no link, no hover lift */
.button.is-dark.is-soon {
  cursor: default;
  background: #475569 !important;
}

.link-block .is-soon {
  margin: 8px 4px;
}

.button.is-dark.is-soon:hover {
  transform: none;
  background: #475569 !important;
  box-shadow: var(--shadow-md);
}

.soon-pill {
  margin-left: 0.5rem;
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.4;
}

.publication-venue-line {
  margin-top: 0.6rem;
  color: #555;
}

/* ------------------------------------------------------------ TL;DR */
.tldr-box {
  background: var(--pp-panel);
  border-left: 4px solid var(--pp-navy);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 4px;
}

.tldr-box strong {
  color: var(--pp-navy);
  margin-right: 0.35rem;
}

.equation-box {
  background: #fafbfc;
  border: 1px solid var(--pp-rule);
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.5rem;
  border-radius: 4px;
  overflow-x: auto;
}

@media (max-width: 480px) {
  .equation-box {
    font-size: 0.82rem;
    padding: 0.75rem 0.8rem;
  }
}

/* ------------------------------------------------------- teaser wall */
.teaser-wall-section {
  padding: 0.5rem 0 0.75rem;
}

.teaser-wall-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.teaser-wall {
  position: relative;
  margin: 0;
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  cursor: zoom-in;
  transition: var(--transition);
  background: #fff;
  container-type: inline-size;
}

.teaser-wall:hover {
  transform: translateY(-3px);
  box-shadow: 0 26px 52px -14px rgba(23, 53, 122, 0.28);
}

.teaser-wall:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 3px;
}

.teaser-wall img {
  display: block;
  width: 100%;
  height: auto;
}

.teaser-overlay {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 1.5cqw 2.2cqw 1.7cqw;
  background: rgba(18, 32, 64, 0.86);
  color: #fff;
  border-top-right-radius: 0.9cqw;
  pointer-events: none;
  text-align: left;
}

.teaser-overlay-title {
  display: block;
  font-size: 1.6rem;
  font-size: 3.1cqw;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.teaser-overlay-sub,
.teaser-overlay-venue {
  display: block;
  font-size: 0.8rem;
  font-size: 1.3cqw;
  line-height: 1.35;
}

.teaser-overlay-sub {
  margin-top: 0.5cqw;
  font-weight: 500;
  color: #dbe4f4;
}

.teaser-overlay-venue {
  margin-top: 0.6cqw;
  font-weight: 700;
}

@container (max-width: 560px) {
  .teaser-overlay {
    display: none;
  }
}

.teaser-wall-hint {
  position: absolute;
  right: 0.9rem;
  bottom: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.teaser-wall:hover .teaser-wall-hint,
.teaser-wall:focus-visible .teaser-wall-hint {
  opacity: 1;
}

.teaser-wall-caption {
  max-width: 900px;
  margin: 0.9rem auto 0;
  text-align: center;
  font-size: 0.92rem;
  color: #555;
}

@media (max-width: 768px) {
  .teaser-wall-container {
    padding: 0 0.75rem;
  }

  .teaser-wall {
    border-radius: 8px;
  }

  .teaser-wall-hint {
    opacity: 1;
  }
}

/* ----------------------------------------------------------- lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 12, 24, 0.93);
  padding: 3rem 1rem 1.5rem;
}

.lightbox img {
  max-width: 96vw;
  max-height: 86vh;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}

.lightbox-close {
  position: absolute;
  top: 0.7rem;
  right: 1rem;
  background: none;
  border: none;
  color: #cbd5e1;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

.lightbox-close:hover,
.lightbox-close:focus-visible {
  color: #fff;
}

.lightbox-full {
  position: absolute;
  top: 1.1rem;
  left: 1.25rem;
  color: #cbd5e1;
  font-size: 0.85rem;
  border: 1px solid rgba(203, 213, 225, 0.4);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
}

.lightbox-full:hover,
.lightbox-full:focus-visible {
  color: #fff;
  border-color: #fff;
}

/* ------------------------------------------------------------ figures */
.content figure.pp-figure,
figure.pp-figure {
  margin: 1.25rem 0 0.5rem;
  text-align: left;
}

.pp-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--pp-rule);
  background: #fff;
}

.content figure.pp-figure figcaption,
.pp-figure figcaption {
  font-size: 0.9rem;
  font-style: normal;
  color: #555;
  margin-top: 0.6rem;
}

.pp-figure figcaption strong {
  color: var(--pp-ink);
}

.zoomable {
  cursor: zoom-in;
  display: block;
  border-radius: 8px;
}

.zoomable:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 3px;
}

.figure-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 640px) {
  .figure-pair {
    grid-template-columns: 1fr;
  }
}

.insight-row {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
}

@media (max-width: 768px) {
  .insight-row {
    grid-template-columns: 1fr;
  }
}

.insight-block + .insight-block {
  margin-top: 2.25rem;
}

/* ------------------------------------------------------ result tables */
.table-heading {
  margin: 0 0 0.2rem !important;
  text-align: center;
}

.table-caption {
  font-size: 0.82rem;
  color: #666;
  text-align: center;
  margin: 0.15rem 0 0.75rem;
  font-style: italic;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 0.5rem 0 0.25rem;
  background: #fff;
  font-variant-numeric: tabular-nums;
  border-top: 2px solid var(--pp-navy);
  border-bottom: 2px solid var(--pp-navy);
}

/* "table." raises specificity above Bulma's `table td:not([align])` reset */
table.result-table th,
table.result-table td {
  padding: 0.42rem 0.55rem;
  text-align: right;
  vertical-align: middle;
  border-bottom: 1px solid var(--pp-rule);
  white-space: nowrap;
}

table.result-table th:first-child,
table.result-table td:first-child,
table.result-table .cell-left {
  text-align: left;
}

.result-table thead th {
  border-bottom: 1.5px solid var(--pp-navy);
  font-weight: 600;
  background: var(--pp-panel);
  color: var(--pp-navy);
}

.result-table tbody th {
  font-weight: 500;
  color: var(--pp-ink);
}

.result-table strong {
  font-weight: 700;
  color: inherit;
}

.result-table .second {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.result-table .avg-col {
  background: #f3f4f6;
}

.result-table tr.ours-row > td,
.result-table tr.ours-row > th,
.result-table .ours-col {
  background: var(--pp-ours);
}

.result-table tr.ours-row > .avg-col {
  background: var(--pp-ours-deep);
}

.result-table tr.ours-row > th,
.result-table tr.ours-row > td.opt,
.result-table tr.ours-row strong,
.result-table .ours-col strong,
.result-table thead th.ours-col {
  color: var(--pp-navy);
}

.result-table tr.ours-row > th,
.result-table tr.ours-row > td.opt {
  font-weight: 700;
}

table.result-table tr.group-row > th {
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pp-muted);
  background: #fafbfc;
  padding-top: 0.55rem;
}

.result-table th[rowspan] {
  vertical-align: middle;
  border-right: 1px solid var(--pp-rule);
}

.results-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1.25rem;
}

@media (max-width: 768px) {
  .results-pair {
    grid-template-columns: 1fr;
  }
}

.results-block {
  margin-top: 2.25rem;
}

.results-block > h4 {
  margin-bottom: 0.4rem !important;
}

.tab-note {
  font-size: 0.82rem;
  color: #666;
  margin: 0.4rem 0 0;
}

/* NeRF tabs and metric toggle */
.nerf-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin: 0.5rem 0 0.25rem;
}

.pp-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pp-tab,
.metric-toggle button {
  appearance: none;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  line-height: 1.2;
}

.pp-tab {
  border: 1px solid #d7dce5;
  background: #fff;
  color: var(--pp-ink);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.pp-tab:hover {
  border-color: var(--pp-navy);
}

.pp-tab[aria-selected="true"] {
  background: var(--pp-navy);
  border-color: var(--pp-navy);
  color: #fff;
}

.pp-tab:focus-visible,
.metric-toggle button:focus-visible,
.cmp-zoom:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.metric-toggle {
  display: inline-flex;
  border: 1px solid #d7dce5;
  border-radius: 999px;
  overflow: hidden;
  background: #fff;
}

.metric-toggle button {
  border: 0;
  background: transparent;
  color: var(--pp-muted);
  padding: 0.4rem 0.85rem;
}

.metric-toggle button + button {
  border-left: 1px solid #d7dce5;
}

.metric-toggle button[aria-pressed="true"] {
  background: var(--pp-ours);
  color: var(--pp-navy);
}

.nerf-block[data-metric="psnr"] tbody[data-metric="ssim"],
.nerf-block[data-metric="ssim"] tbody[data-metric="psnr"] {
  display: none;
}

.pp-panel:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 4px;
  border-radius: 4px;
}

/* ------------------------------------------------ comparison sliders */
.cmp-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem 1.25rem;
  margin-top: 1.25rem;
  align-items: start;
}

.cmp-card {
  margin: 0;
}

.cmp-card.is-last-odd {
  grid-column: 1 / -1;
  width: calc(50% - 0.625rem);
  justify-self: center;
}

@media (max-width: 768px) {
  .cmp-grid {
    grid-template-columns: 1fr;
  }

  .cmp-card.is-last-odd {
    width: 100%;
  }
}

.cmp-view {
  --pos: 50%;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--pp-rule);
  background: #fff;
  cursor: ew-resize;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.cmp-view:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 3px;
}

.cmp-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  transform-origin: 0 0;
  transition: transform 0.35s ease;
  -webkit-user-drag: none;
  pointer-events: none;
}

.cmp-top {
  position: absolute;
  inset: 0;
  clip-path: inset(0 0 0 var(--pos));
  pointer-events: none;
}

.cmp-mark {
  position: absolute;
  inset: 0;
  transform-origin: 0 0;
  transition: transform 0.35s ease, opacity 0.2s ease;
  pointer-events: none;
}

.cmp-mark span {
  position: absolute;
  border: 2px solid #e0302a;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.75);
}

.cmp-view.is-zoomed .cmp-mark {
  opacity: 0;
}

.cmp-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos);
  width: 2px;
  margin-left: -1px;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.3);
  pointer-events: none;
}

.cmp-knob {
  position: absolute;
  top: 50%;
  left: var(--pos);
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.35);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pp-navy);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
}

.cmp-knob::before {
  content: "\2039\00a0\203A";
}

.cmp-view.is-dragging .cmp-knob {
  box-shadow: 0 0 0 4px rgba(23, 53, 122, 0.25), 0 2px 8px rgba(15, 23, 42, 0.35);
}

.cmp-tag {
  position: absolute;
  top: 0.6rem;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  pointer-events: none;
}

.cmp-tag-left {
  left: 0.6rem;
  background: rgba(15, 23, 42, 0.72);
}

.cmp-tag-right {
  right: 0.6rem;
  background: rgba(23, 53, 122, 0.9);
}

.cmp-caption {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.55rem;
}

.cmp-title {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--pp-ink);
}

.cmp-note {
  display: block;
  font-size: 0.85rem;
  color: #666;
}

.cmp-zoom {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid #d7dce5;
  background: #fff;
  color: var(--pp-navy);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.cmp-zoom:hover {
  border-color: var(--pp-navy);
}

.cmp-zoom[aria-pressed="true"] {
  background: var(--pp-navy);
  border-color: var(--pp-navy);
  color: #fff;
}

/* ------------------------------------ rank-configuration grid (Fig. 6) */
.rank-scroll {
  overflow-x: auto;
  margin-top: 0.75rem;
}

.rank-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(118px, 1fr));
  gap: 0.6rem;
  min-width: 620px;
}

.rank-cell {
  margin: 0;
  text-align: center;
}

.rank-full {
  position: relative;
}

.rank-full img,
.rank-zoom {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--pp-rule);
}

.rank-box {
  position: absolute;
  border: 2px solid #e0302a;
  border-radius: 2px;
}

.rank-zoom {
  margin-top: 0.45rem;
  aspect-ratio: 1;
  object-fit: cover;
}

.rank-cell figcaption {
  margin-top: 0.4rem;
  padding: 0.3rem 0.2rem;
  border-radius: 6px;
}

.rank-name {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pp-ink);
}

.rank-psnr {
  display: block;
  font-size: 0.85rem;
  color: var(--pp-muted);
  font-variant-numeric: tabular-nums;
}

.rank-cell.is-ours figcaption {
  background: var(--pp-ours);
}

.rank-cell.is-ours .rank-name,
.rank-cell.is-ours .rank-psnr {
  color: var(--pp-navy);
  font-weight: 700;
}

/* -------------------------------------------------- schedule explorer */
.explorer {
  margin: 0.75rem 0 0.5rem;
  border: 1px solid var(--pp-rule);
  border-radius: 10px;
  background: #fff;
  padding: 1rem 1.25rem 1.1rem;
}

.explorer svg {
  display: block;
  width: 100%;
  height: auto;
}

.explorer svg text {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  font-size: 12px;
}

.explorer .se-tick {
  fill: #64748b;
}

.explorer .se-grid {
  stroke: #e9ecf2;
  stroke-width: 1;
}

.explorer .se-axis {
  stroke: #94a3b8;
  stroke-width: 1;
  fill: none;
}

.explorer .se-decay {
  fill: #eef0f4;
}

.explorer .se-t0 {
  stroke: #94a3b8;
  stroke-width: 1;
  stroke-dasharray: 2 3;
}

.explorer .se-rank {
  fill: none;
  stroke: var(--pp-rank);
  stroke-width: 2.5;
  stroke-linejoin: round;
}

.explorer .se-rank-init {
  stroke-dasharray: 5 4;
}

.explorer .se-lr {
  fill: none;
  stroke: var(--pp-lr);
  stroke-width: 2.5;
  stroke-linejoin: round;
}

.explorer .se-mark-rank,
.explorer .se-mark-lr {
  stroke-width: 1.25;
  stroke-dasharray: 4 3;
}

.explorer .se-mark-rank {
  stroke: var(--pp-rank);
}

.explorer .se-mark-lr {
  stroke: var(--pp-lr);
}

.explorer .se-dot-rank {
  fill: var(--pp-rank);
}

.explorer .se-dot-lr {
  fill: var(--pp-lr);
}

.explorer .se-label-rank,
.explorer .se-name-rank {
  fill: var(--pp-rank);
  font-weight: 600;
}

.explorer .se-label-lr,
.explorer .se-name-lr {
  fill: var(--pp-lr);
  font-weight: 600;
}

.explorer .se-label-t0 {
  fill: #64748b;
}

.explorer-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem 1.75rem;
  margin-top: 0.9rem;
}

@media (max-width: 640px) {
  .explorer {
    padding: 0.8rem 0.8rem 0.9rem;
  }

  .explorer-controls {
    grid-template-columns: 1fr;
  }
}

.explorer-control label {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--pp-ink);
}

.explorer-control output {
  font-variant-numeric: tabular-nums;
  color: var(--pp-navy);
}

.explorer-control input[type="range"] {
  width: 100%;
  margin: 0.3rem 0 0;
  accent-color: var(--pp-navy);
  cursor: pointer;
}

.explorer-readout {
  font-size: 0.9rem;
  color: var(--pp-muted);
  margin: 0.8rem 0 0 !important;
}

.explorer-readout output {
  color: var(--pp-ink);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.explorer-note {
  font-size: 0.82rem;
  color: #666;
  margin: 0.25rem 0 0 !important;
}

/* ------------------------------------------------------------- BibTeX */
.copy-bibtex-btn.copied .copy-text::after {
  content: none;
}

/* ----------------------------------------------------- reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero,
  .section {
    animation: none !important;
  }

  .teaser-wall,
  .button,
  .cmp-img,
  .cmp-mark,
  .pp-tab {
    transition: none !important;
  }

  .teaser-wall:hover {
    transform: none;
  }
}