/* ==========================================================================
   QuadLink project page — theme migrated from the PartLLM page style
   ========================================================================== */

:root {
  --ink: #14141a;
  --muted: #696a75;
  --paper: #fbfbfd;
  --line: #e7e7ec;
  --night: #111219;
  --accent: #5f5ce6;
  --violet: #ae71e8;
  --sky: #61c2f3;
  --mint: #50d2a2;
  --card: #ffffff;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 32px;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Jost', 'Noto Sans', system-ui, -apple-system, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container.is-max-desktop {
  max-width: 1040px;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  text-align: center;
  padding-block: 54px 26px;
  position: relative;
}

/* The reference page gives the hero a wider shell than the body sections. */
.hero .container.is-max-desktop {
  max-width: 1320px;
}

.hero::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translate(-50%);
  width: min(900px, 88vw);
  height: 460px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 40%, rgba(174, 113, 232, 0.16), transparent 38%),
    radial-gradient(circle at 66% 52%, rgba(97, 194, 243, 0.18), transparent 38%);
  filter: blur(14px);
  z-index: -1;
  pointer-events: none;
}

.title.publication-title {
  font-family: 'Jost', 'Noto Sans', sans-serif;
  font-size: clamp(64px, 9.4vw, 122px);
  font-weight: 700;
  letter-spacing: -0.078em;
  line-height: 0.84;
  margin: 0;
  position: relative;
  z-index: 1;
}

.hero-subtitle {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 30px auto 0;
  color: #363741;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(22px, 2.4vw, 34px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.publication-authors {
  font-family: 'Jost', 'Noto Sans', sans-serif;
  position: relative;
  z-index: 1;
}

.author-block {
  display: inline-block;
}

.publication-authors .author-block {
  font-size: 15px;
  font-weight: 500;
  color: #3d3e49;
}

.publication-authors a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: #c9c9d2;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.16s, text-decoration-color 0.16s;
}

.publication-authors a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.publication-authors sup {
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  margin-left: 2px;
}

.affiliation-block {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.35rem;
}

.affiliation-block .author-block {
  margin: 0 0.35rem;
}

/* Resource buttons (Paper / Code / Stars) */

.publication-links {
  position: relative;
  z-index: 1;
}

.link-block a {
  margin-top: 5px;
  margin-bottom: 5px;
}

.publication-links .button,
.link-block .button {
  height: 43px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid #dcdce3;
  background: #fff;
  color: #34353e;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 3px 13px rgba(27, 29, 39, 0.04);
  transition: transform 0.16s, box-shadow 0.16s, border-color 0.16s, color 0.16s;
}

.publication-links .button:hover,
.link-block .button:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 9px 23px rgba(27, 29, 39, 0.16);
}

.publication-links .button .icon {
  margin-right: 2px;
}

/* --------------------------------------------------------------------------
   Sections & headings
   -------------------------------------------------------------------------- */

.section {
  padding: 3rem 1.5rem;
}

.section .title.is-3,
.section .title {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 500;
  letter-spacing: -0.042em;
  color: var(--ink);
}

.section .title.is-3 {
  font-size: clamp(30px, 3.3vw, 40px);
  line-height: 1.06;
  margin-bottom: 1.5rem;
}

.section .title.is-5 {
  font-family: 'Jost', 'Noto Sans', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.content p {
  color: #555866;
  font-size: 16px;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   Media frames
   -------------------------------------------------------------------------- */

.quad-video-section {
  padding-top: 0;
}

.quad-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid #dcdce2;
  border-radius: 25px;
  background: #e9e8ee;
  box-shadow: 0 30px 80px rgba(31, 30, 50, 0.11);
}

.quad-asset-wide {
  width: 100%;
  display: flex;
  justify-content: center;
}

.quad-teaser-img,
.quad-figure img,
.quad-intro-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 18px 48px rgba(18, 19, 29, 0.08);
}

.quad-figure {
  width: 100%;
  margin: 0 auto 1.5rem;
  display: flex;
  justify-content: center;
}

.quad-figure img {
  max-width: 1040px;
}

.quad-intro-split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 28px;
  align-items: center;
  margin-bottom: 1.5rem;
}

.quad-intro-copy {
  font-size: 1rem;
  line-height: 1.7;
}

.quad-figure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  align-items: start;
  margin-top: 1.5rem;
}

.quad-figure-grid .quad-figure {
  margin-bottom: 1rem;
}

/* --------------------------------------------------------------------------
   Stats & method cards
   -------------------------------------------------------------------------- */

.quad-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.quad-stat {
  min-height: 124px;
  padding: 18px 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: 0 8px 22px rgba(18, 19, 29, 0.05);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quad-stat-value {
  font-family: 'Jost', 'Noto Sans', sans-serif;
  font-size: 2.05rem;
  line-height: 1.05;
  font-weight: 600;
  color: var(--accent);
}

.quad-stat-label {
  margin-top: 8px;
  font-size: 0.9rem;
  line-height: 1.35;
  color: var(--muted);
}

.quad-method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 1.5rem;
}

.quad-method-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: 0 12px 30px rgba(18, 19, 29, 0.06);
  padding: 20px;
  min-height: 176px;
}

.quad-method-card p {
  color: var(--muted);
  line-height: 1.6;
  text-wrap: pretty;
}

/* --------------------------------------------------------------------------
   Table
   -------------------------------------------------------------------------- */

.quad-table-wrap {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: auto;
  background: var(--card);
  box-shadow: 0 18px 48px rgba(18, 19, 29, 0.07);
}

.quad-table-wrap table {
  margin-bottom: 0;
  min-width: 840px;
}

.quad-table-wrap thead th {
  background: #f7f7fa;
  color: #555866;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line) !important;
  white-space: nowrap;
}

.quad-table-wrap tbody td {
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  vertical-align: middle;
}

.quad-table-wrap tbody tr:first-child td {
  font-weight: 500;
}

.quad-best-row {
  font-weight: 700;
  background: #eafaf3 !important;
}

.quad-result-row {
  background: #eafaf3 !important;
}

.quad-best-cell {
  font-weight: 700;
}

.quad-second-cell {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Placeholders
   -------------------------------------------------------------------------- */

.quad-placeholder {
  width: 100%;
  min-height: 300px;
  margin: 0 auto 1.5rem;
  border: 1px dashed #c3c3d0;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(95, 92, 230, 0.07), rgba(80, 210, 162, 0.06)), #f7f7fa;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
}

.quad-placeholder-small {
  min-height: 250px;
}

.quad-placeholder-title {
  font-family: 'Jost', 'Noto Sans', sans-serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: #293040;
}

.quad-placeholder-subtitle {
  max-width: 680px;
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   BibTeX
   -------------------------------------------------------------------------- */

.content pre,
pre {
  background: #f4f4f4;
  border: 1px solid #e5e5e8;
  border-radius: 0;
  color: #4c4c50;
  padding: 25px 28px 30px;
  font-family: SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 13px;
  line-height: 1.72;
  tab-size: 2;
  overflow-x: auto;
  box-shadow: none;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

footer.footer {
  padding-top: 2rem;
  padding-bottom: 2rem;
  background: transparent;
  border-top: 1px solid var(--line);
}

footer.footer p {
  color: #8b8c95;
  font-size: 12px;
}

.footer .icon-link {
  font-size: 25px;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   Legacy helpers kept from the original template
   -------------------------------------------------------------------------- */

.dnerf {
  font-variant: small-caps;
}

.teaser {
  font-family: 'Jost', 'Noto Sans', sans-serif;
}

.teaser .hero-body {
  padding-top: 0;
  padding-bottom: 3rem;
}

.publication-banner video {
  position: relative;
  left: auto;
  top: auto;
  transform: none;
  object-fit: fit;
}

.publication-venue {
  color: #555;
  width: fit-content;
  font-weight: bold;
}

.publication-awards {
  color: #ff3860;
  width: fit-content;
  font-weight: bolder;
}

.publication-video {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 18px !important;
}

.publication-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.results-carousel {
  overflow: hidden;
}

.results-carousel .item {
  margin: 5px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0;
  font-size: 0;
}

.results-carousel video {
  margin: 0;
}

.interpolation-panel {
  background: #f7f7fa;
  border-radius: 14px;
}

.interpolation-panel .interpolation-image {
  width: 100%;
  border-radius: 10px;
}

.interpolation-panel .slider {
  margin: 0 !important;
}

#interpolation-image-wrapper {
  width: 100%;
}

#interpolation-image-wrapper img {
  border-radius: 10px;
}

.modal.is-active .modal-background {
  backdrop-filter: blur(5px);
}

html.modal-open,
body.modal-open {
  overflow: hidden;
}

#main-content.modal-open {
  opacity: 0.3;
}

.modal-left {
  width: 800px;
  flex: none;
}

.modal-right {
  width: 400px;
  flex: none;
}

.modal-card-body {
  display: flex !important;
  gap: 1rem;
  padding: 0;
}

/* --------------------------------------------------------------------------
   Interactive results viewer
   -------------------------------------------------------------------------- */

.viewer-section {
  padding-bottom: 110px;
}

.compact-heading {
  margin-bottom: 23px;
}

.result-controls {
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 18px 28px;
  margin-bottom: 18px;
  display: flex;
}

.mesh-picker {
  color: #555866;
  flex: 1 1 600px;
  min-width: 0;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

.mesh-pills {
  display: grid;
  grid-template-columns: repeat(13, minmax(0, 1fr));
  gap: 8px;
  padding: 4px;
}

.mesh-thumbnail {
  aspect-ratio: 1;
  cursor: pointer;
  background: #f7f7fa;
  border: 2px solid #dcdce3;
  border-radius: 10px;
  width: 100%;
  padding: 2px;
  overflow: hidden;
  transition: border-color 0.16s, box-shadow 0.16s;
}

.mesh-thumbnail img {
  object-fit: contain;
  width: 100%;
  height: 100%;
  display: block;
}

.mesh-thumbnail:hover {
  border-color: #aaa6e9;
}

.mesh-thumbnail[aria-pressed='true'] {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(105, 88, 255, 0.12);
}

.mesh-thumbnail:focus-visible,
.viewer-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.viewer-demo {
  color: #f5f5f7;
  background: #181923;
  border: 1px solid #30323e;
  border-radius: 25px;
  display: grid;
  grid-template-columns: minmax(0, 2.15fr) minmax(270px, 0.85fr);
  overflow: hidden;
  box-shadow: 0 36px 85px rgba(18, 19, 29, 0.2);
}

.viewer-stage {
  border-right: 1px solid #30323e;
  min-width: 0;
  padding: 18px;
}

.viewer-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  min-height: 28px;
  margin-bottom: 12px;
}

.live-badge {
  color: #92939f;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  font-weight: 700;
  display: inline-flex;
}

.live-badge i {
  background: var(--mint);
  border-radius: 50%;
  width: 7px;
  height: 7px;
  box-shadow: 0 0 0 4px rgba(80, 210, 162, 0.12);
}

.view-mode-picker {
  border: 0;
  margin: 0;
  padding: 0;
}

.view-mode-picker legend {
  color: #868895;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
  padding: 0;
  font-size: 10px;
  font-weight: 700;
}

.view-mode-picker > div {
  background: #252731;
  border: 1px solid #3d404e;
  border-radius: 10px;
  gap: 4px;
  padding: 4px;
  display: flex;
}

.view-mode-picker label {
  text-align: center;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 7px;
  flex: 1;
  padding: 7px 16px;
  font-size: 14px;
  color: #bfc0c8;
  transition: background 0.16s, border-color 0.16s, color 0.16s, box-shadow 0.16s;
  position: relative;
}

.view-mode-picker label:hover {
  color: #fff;
  background: #343641;
}

.view-mode-picker label.is-selected,
.view-mode-picker label:has(input:checked) {
  border-color: var(--accent);
  color: #fff;
  background: #15161d;
  box-shadow: 0 0 0 1px rgba(105, 88, 255, 0.18), 0 5px 14px rgba(0, 0, 0, 0.24);
}

.view-mode-picker input {
  opacity: 0;
  width: 1px;
  height: 1px;
  position: absolute;
}

.viewer-toggle {
  cursor: pointer;
  background: #252731;
  border: 1px solid #3d404e;
  border-radius: 999px;
  color: #bfc0c8;
  font-family: inherit;
  font-size: 13px;
  padding: 8px 16px;
  transition: background 0.16s, color 0.16s, border-color 0.16s;
}

.viewer-toggle:hover {
  color: #fff;
  background: #343641;
}

.viewer-toggle[aria-pressed='true'] {
  border-color: var(--mint);
  color: var(--mint);
}

.viewer-canvas {
  background:
    radial-gradient(circle at 50% 46%, #343849 0%, #20222c 45%, #14151c 76%),
    #171820;
  border: 1px solid #333541;
  border-radius: 17px;
  min-height: 570px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.quad-viewer-surface {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
}

.viewer-hint {
  z-index: 3;
  color: #bfc0c8;
  pointer-events: none;
  white-space: nowrap;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(12, 13, 18, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 999px;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  font-size: 11px;
  display: inline-flex;
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translate(-50%);
}

.viewer-status {
  z-index: 4;
  color: #e5e5eb;
  background: rgba(24, 25, 35, 0.9);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
}

.viewer-status.is-error {
  color: #ffb4b4;
}

.viewer-context {
  flex-direction: column;
  justify-content: center;
  gap: 34px;
  min-width: 0;
  padding: 34px 29px;
  display: flex;
}

.context-label {
  color: #868895;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 13px;
  font-size: 10px;
  font-weight: 700;
}

.viewer-context h3 {
  letter-spacing: -0.03em;
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 30px;
  font-weight: 500;
  line-height: 1.08;
  color: #f2f2f5;
}

.result-labels ul {
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.result-labels li {
  align-items: center;
  gap: 11px;
  font-size: 15px;
  display: flex;
  color: #f2f2f5;
}

.result-labels small {
  color: #a7a8b3;
  margin-left: auto;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media screen and (max-width: 920px) {
  .viewer-demo {
    grid-template-columns: 1fr;
  }

  .viewer-stage {
    border-bottom: 1px solid #30323e;
    border-right: 0;
  }

  .viewer-context {
    padding: 26px 21px 28px;
  }
}

@media screen and (max-width: 900px) {
  .quad-stats-grid,
  .quad-method-grid,
  .quad-intro-split,
  .quad-figure-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quad-video {
    border-radius: 18px;
  }

  .mesh-pills {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@media screen and (max-width: 680px) {
  .section {
    padding: 2.5rem 1.25rem;
  }

  .container.is-max-desktop {
    width: min(100% - 30px, 1040px);
  }

  .hero {
    padding-block: 40px 22px;
  }

  .title.publication-title {
    font-size: clamp(58px, 19vw, 90px);
  }

  .hero-subtitle {
    margin-top: 18px;
    font-size: 21px;
    letter-spacing: -0.02em;
  }

  .quad-video,
  .quad-teaser-img,
  .quad-figure img,
  .quad-intro-media img {
    border-radius: 14px;
  }

  .quad-stats-grid,
  .quad-method-grid,
  .quad-intro-split,
  .quad-figure-grid {
    grid-template-columns: 1fr;
  }

  .quad-placeholder {
    min-height: 220px;
  }

  .content pre,
  pre {
    border-radius: 14px;
    padding: 20px 18px;
    font-size: 11px;
  }

  .viewer-section {
    padding-bottom: 82px;
  }

  .viewer-canvas {
    min-height: 420px;
  }

  .viewer-demo {
    border-radius: 18px;
  }

  .viewer-context h3 {
    font-size: 26px;
  }

  .mesh-pills {
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  }
}