/* ===================================================================
   GeRaF 2.0 — project page styles
   Edit the variables below to re-theme the whole site.
   =================================================================== */

:root {
  --accent:        #2563eb;   /* primary accent (links, buttons, icons) */
  --accent-dark:   #1d4ed8;
  --ink:           #1a1a1a;   /* body text */
  --ink-soft:      #555;      /* secondary text */
  --bg:            #ffffff;
  --bg-alt:        #f6f7f9;   /* alternating section background */
  --border:        #e6e8eb;
  --max-width:     960px;

  /* Brand gradient — blue -> purple -> orange */
  --grad-blue:     #2563eb;
  --grad-purple:   #9333ea;
  --grad-red:      #f97316;
  --brand-gradient: linear-gradient(
    90deg,
    var(--grad-blue)   0%,
    var(--grad-purple) 50%,
    var(--grad-red)    100%
  );
}

/* ---------- base ---------------------------------------------------- */
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

.container.is-max-desktop { max-width: var(--max-width); }

.section { padding: 2rem 1.5rem; }
.section-alt { background: var(--bg-alt); }

.section-title {
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 1.1rem !important;
}

.section-lead {
  text-align: center;
  color: var(--ink-soft);
  max-width: 720px;
  margin: -0.25rem auto 1.25rem;
  font-size: 1.05rem;
}

/* ---------- hero ---------------------------------------------------- */
.hero {
  background: linear-gradient(180deg, #fbfcfe 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}
.hero-body { padding: 2.5rem 1.5rem 2rem; }

.publication-lockup {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.15rem;
  transform: translateX(-2rem);
}

.publication-logo {
  width: auto;
  height: 5.1rem;
  display: block;
  flex: 0 0 auto;
}

.publication-title,
.publication-subtitle {
  background-image: var(--brand-gradient) !important;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
}

.publication-title {
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 5.25rem !important;
  margin-bottom: 0 !important;
  line-height: 1.05;
}

.publication-subtitle {
  font-weight: 800;
  letter-spacing: 0;
  font-size: 1.75rem !important;
  line-height: 1.25;
  margin: 0 auto 1.2rem !important;
  max-width: 940px;
  white-space: nowrap;
}

.publication-venue {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(47, 109, 240, 0.1);
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.publication-authors {
  font-size: 1.15rem;
  line-height: 1.9;
  margin-bottom: 0.4rem;
}
.author-block { white-space: nowrap; margin: 0 0.15rem; }
.author-block a { color: var(--ink); font-weight: 600; }
.author-block a:hover { color: var(--accent); }
.author-block sup { color: var(--accent); font-weight: 700; }

.publication-affiliations {
  color: var(--ink-soft);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}
.affiliation-block { margin: 0 0.6rem; white-space: nowrap; }

.publication-note {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin-bottom: 0.8rem;
}

/* ---------- papers list (project-series hero) ---------------------- */
.papers-block {
  max-width: 820px;
  margin: 1.3rem auto 0.4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}
.paper-row {
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  padding: 1.2rem 1.3rem;
  transition: transform 0.18s ease,
              box-shadow 0.18s ease,
              border-color 0.18s ease;
}
.paper-row:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.10);
  border-color: #d6dae0;
}
.paper-row-featured {
  border-color: rgba(37, 99, 235, 0.24);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.08);
}
.paper-row-featured:hover {
  border-color: rgba(37, 99, 235, 0.42);
  box-shadow: 0 22px 46px rgba(37, 99, 235, 0.18);
}

.paper-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
}

.paper-alias {
  font-weight: 800;
  font-size: 1.65rem;            /* was 0.98rem — now the card's "title" */
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}

.venue-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1;
}
.venue-badge em {
  font-style: normal;
  font-weight: 700;
  margin-left: 0.15rem;
  opacity: 0.95;
}
/* Champion (trophy) icon — gold, sits before the venue name */
.venue-badge .fa-trophy {
  color: #f59e0b;
  font-size: 0.95em;
}
.venue-cvpr    { color: #b45309; }
.venue-neurips { color: #6d28d9; }

.paper-title-line {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
  margin: 0;
}

/* Per-card link row (Paper / arXiv / Code) — smaller than the hero CTAs */
.paper-row-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}
.paper-row-links .link-button {
  font-size: 0.82rem;
  padding: 0.38rem 0.85rem;
}

/* ---------- link buttons ------------------------------------------- */
.publication-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}
.link-button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--ink);
  color: #fff !important;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  padding: 0.6rem 1.15rem;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease;
}
.link-button:hover {
  background: var(--accent);
  text-decoration: none;
  transform: translateY(-2px);
}
.link-button .icon { font-size: 1rem; }

/* ---------- teaser ------------------------------------------------- */
.teaser-section { padding-top: 1.4rem; padding-bottom: 1.6rem; }
.teaser-media {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
  display: block;
  background: #000;
}

/* ---------- text blocks -------------------------------------------- */
.acknowledgement-text p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--ink);
  text-align: justify;
}

/* TRELLIS-style soft block for each paper's abstract */
.abstract-block {
  max-width: 820px;
  margin: 0 auto 1rem;
  padding: 1.15rem 1.4rem;
  background: #eef2fb;
  border: 1px solid #dde4f1;
  border-radius: 10px;
}
.abstract-block:last-child { margin-bottom: 0; }
.abstract-block-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
  flex-wrap: wrap;
}
.abstract-block-header .paper-alias {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0;
}
.abstract-block-header .venue-badge {
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.abstract-block p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink);
  text-align: justify;
  margin: 0 0 0.55rem;
}
.abstract-block p:last-child { margin-bottom: 0; }

/* ---------- figures ------------------------------------------------ */
.figure { margin: 0 0 1.8rem; }
.figure:last-of-type { margin-bottom: 0; }
.figure img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  display: block;
  background: #fff;
}
.figure-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}
.figure-header .paper-alias {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0;
}
.figure-header .venue-badge {
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.caption,
.figure figcaption {
  font-size: 0.92rem;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 0.85rem;
  line-height: 1.6;
}

/* ---------- feature cards (clickable, open the video modal) ------- */
.feature-grid { margin-top: 1.5rem; }
.feature-card {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem 1.4rem 1.7rem;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  display: block;
  transition: box-shadow 0.15s ease,
              transform 0.15s ease,
              border-color 0.15s ease;
}
.section-alt .feature-card { background: #fff; }
.feature-card:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.10);
  transform: translateY(-3px);
  border-color: #d6dae0;
}
.feature-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.feature-icon {
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 0.6rem;
  display: block;
}
.feature-title {
  font-weight: 700;
  font-size: 1.12rem;
  margin-bottom: 0.45rem;
}
.feature-card p {
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.65;
  margin: 0;
}
/* "Watch" affordance — small play pill, visible on hover */
.feature-card-play {
  position: absolute;
  bottom: 0.85rem;
  right: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(37, 99, 235, 0.10);
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  opacity: 0.55;
  transition: opacity 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.feature-card:hover .feature-card-play {
  opacity: 1;
  background: var(--accent);
  color: #fff;
}

/* ---------- carousel ----------------------------------------------- */
.carousel { position: relative; overflow: hidden; border-radius: 14px; }
.carousel-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}
.carousel-slide {
  min-width: 100%;
  box-sizing: border-box;
}
.carousel-slide video {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #000;
  display: block;
}
.carousel-arrow {
  position: absolute;
  top: 42%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: rgba(26, 26, 26, 0.6);
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s ease;
}
.carousel-arrow:hover { background: var(--accent); }
.carousel-prev { left: 0.75rem; }
.carousel-next { right: 0.75rem; }
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}
.carousel-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  background: var(--border);
  cursor: pointer;
  padding: 0;
  transition: background 0.12s ease, transform 0.12s ease;
}
.carousel-dot.is-active { background: var(--accent); transform: scale(1.25); }

/* ---------- STL viewer gallery ------------------------------------- */
.stl-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-top: 0.5rem;
}
.stl-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.stl-card:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}
.stl-viewer {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #f1f5f9;
  cursor: grab;
  position: relative;
  overflow: hidden;
}
.stl-viewer:active { cursor: grabbing; }
.stl-viewer canvas { display: block; width: 100%; height: 100%; }
.stl-viewer.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  width: 36px; height: 36px;
  margin: auto;
  border: 3px solid rgba(0, 0, 0, 0.12);
  border-top-color: var(--accent);
  animation: stl-spin 0.9s linear infinite;
}
@keyframes stl-spin { to { transform: rotate(360deg); } }
.stl-card-title {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0.9rem 1rem 0.25rem;
  color: var(--ink);
}
.stl-card-caption {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 1rem 1rem;
  line-height: 1.55;
}
.stl-viewer-error {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fee2e2;
  color: #991b1b;
  font-size: 0.88rem;
  text-align: center;
}
.stl-viewer-error code {
  background: rgba(0, 0, 0, 0.06);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85rem;
}

/* ---------- teaser marquee (infinite right-to-left scroll) -------- */
.teaser-marquee {
  position: relative;
  overflow: hidden;
  /* soft fade at the left/right edges so clips don't pop in/out */
  -webkit-mask-image: linear-gradient(90deg,
    transparent 0%, #000 5%, #000 95%, transparent 100%);
          mask-image: linear-gradient(90deg,
    transparent 0%, #000 5%, #000 95%, transparent 100%);
}
.teaser-marquee-track {
  display: flex;
  gap: 0.5rem;                    /* tight spacing between clips */
  width: max-content;             /* lets the row grow past the viewport */
  /* duration is set in JS (initTeaserMarquee) once we know the track width */
  animation: teaser-marquee-scroll var(--marquee-duration, 30s) linear infinite;
  will-change: transform;
}
@keyframes teaser-marquee-scroll {
  from { transform: translate3d(0, 0, 0); }
  /* JS sets --marquee-shift to one originals-set width (items + trailing
     gap, in px). Translating exactly that distance makes the first clone
     land on the first original's position — seamless wrap. */
  to   { transform: translate3d(calc(-1 * var(--marquee-shift, 50%)), 0, 0); }
}
.teaser-caption {
  max-width: 900px;
  margin: 0.9rem auto 0;
  text-align: center;
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
  /* force the sentence onto exactly two balanced lines on desktop */
  text-wrap: balance;
}
.teaser-caption b {
  font-weight: 700;
  color: var(--ink);
}

.teaser-clip {
  flex: 0 0 220px;
  width: 220px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  border-radius: 10px;
  background: var(--bg-alt);      /* no black flash before first frame */
}

/* ---------- result grid (static thumbnails) ----------------------- */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}
.result-card {
  position: relative;
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  padding: 0;
  font: inherit;
  transition: box-shadow 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}
.result-card:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.10);
  border-color: #d6dae0;
  transform: translateY(-2px);
}
.result-card-video {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--bg-alt);      /* neutral; no black flash before first frame */
  display: block;
}
.result-card-body {
  padding: 0.65rem 0.85rem 0.8rem;
}
.result-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.2rem;
  line-height: 1.3;
}
.result-card-caption {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.4;
}
/* Top-right thumbnails: small box + object reference images */
.result-card-thumbs {
  position: absolute;
  top: 8px; right: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 2;
  pointer-events: none;
}
.result-card-thumbs img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 6px;
  border: 1.5px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  background: #fff;
  display: block;
  pointer-events: auto;            /* re-enable hover; clicks still bubble */
  cursor: zoom-in;
  transition: transform 0.12s ease;
}
.result-card-thumbs img:hover { transform: scale(1.08); }
.result-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- inline card: expand-to-modal button ------------------- */
.stl-card { position: relative; }
.stl-card-expand {
  position: absolute;
  top: 10px; right: 10px;
  z-index: 2;
  width: 32px; height: 32px;
  border-radius: 8px;
  border: none;
  background: rgba(15, 23, 42, 0.65);
  color: #fff;
  cursor: pointer;
  font-size: 0.82rem;
  opacity: 0;
  transition: opacity 0.15s ease, background 0.15s ease;
}
.stl-card:hover .stl-card-expand,
.stl-card-expand:focus-visible { opacity: 1; }
.stl-card-expand:hover { background: var(--accent); }

/* ---------- result-trigger: clickable carousel slide -------------- */
.result-trigger {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 14px;
  overflow: hidden;
}
.result-trigger video {
  width: 100%;
  display: block;
  background: #000;
  border-radius: 14px;
}
.result-trigger-badge {
  position: absolute;
  top: 12px; right: 12px;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
  pointer-events: none;
}
.result-trigger:hover .result-trigger-badge,
.result-trigger:focus-visible .result-trigger-badge {
  opacity: 1;
  transform: translateY(0);
}
.result-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 3D modal (floating window) ---------------------------- */
.stl-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
}
.stl-modal.is-open {
  display: flex;
  align-items: center;
  justify-content: center;
}
.stl-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.62);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  cursor: zoom-out;
}
.stl-modal-window {
  position: relative;
  width: min(1000px, 94vw);
  height: min(720px, 90vh);
  background: #0b1220;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  animation: stl-modal-in 0.18s ease-out;
}
@keyframes stl-modal-in {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}
.stl-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.stl-modal-title {
  margin: 0;
  color: #f1f5f9;
  font-size: 1rem;
  font-weight: 700;
}
.stl-modal-close {
  background: rgba(255, 255, 255, 0.08);
  color: #f1f5f9;
  border: none;
  width: 32px; height: 32px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.stl-modal-close:hover { background: rgba(255, 255, 255, 0.15); }
.stl-modal-body {
  flex: 1;
  display: flex;
  min-height: 0;
}

/* Left: stage that hosts one of three panes at a time */
.stl-modal-stage {
  flex: 1;
  position: relative;
  background: #0b1220;
  min-height: 0;
}
.stl-modal-pane {
  position: absolute;
  inset: 0;
  display: none;
}
.stl-modal-pane.is-active { display: flex; align-items: center; justify-content: center; }
.stl-modal-pane[data-pane="mesh"].is-active { display: block; }
.stl-modal-pane img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  background: #1a1a1a;
}
.stl-modal-viewer {
  width: 100%;
  height: 100%;
  background: #0b1220;
  cursor: grab;
  position: relative;
  min-height: 0;
}

/* Right: 3-way picker (mesh / box / object) */
.stl-modal-picker {
  flex: 0 0 168px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.04);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  overflow-y: auto;
}
.stl-modal-pick {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.10);
  border-radius: 10px;
  padding: 6px;
  cursor: pointer;
  color: inherit;
  font: inherit;
  text-align: center;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.12s ease;
}
.stl-modal-pick:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}
.stl-modal-pick.is-active {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.15);
}
.pick-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 6px;
  background: #1a1a1a;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.55);
}
.pick-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.pick-thumb-mesh { font-size: 1.5rem; }
.pick-label {
  color: rgba(241, 245, 249, 0.7);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.stl-modal-pick.is-active .pick-label { color: #fff; }

/* ---------- result-card hover preview (main page only) ----------- */
.thumb-preview {
  position: fixed;
  z-index: 1500;
  width: 260px;
  height: 260px;
  border-radius: 14px;
  background: #fff;
  border: 2px solid #fff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.14s ease, transform 0.14s ease;
}
.thumb-preview.is-visible {
  opacity: 1;
  transform: scale(1);
}
.thumb-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.stl-modal-viewer:active { cursor: grabbing; }
.stl-modal-viewer canvas { display: block; width: 100%; height: 100%; }
.stl-modal-viewer.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 40px; height: 40px;
  margin: auto;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: #93c5fd;
  animation: stl-spin 0.9s linear infinite;
}
.stl-modal-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.stl-modal-toolbar-btn {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.stl-modal-toolbar-btn:hover { background: rgba(255, 255, 255, 0.16); }
.stl-modal-toolbar-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.stl-modal-toolbar-btn.is-active:hover { background: var(--accent-dark); }
.stl-modal-toolbar .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-outside { background: #a78bfa; opacity: 0.7; }
.dot-inside  { background: #cbd5e1; }
.stl-modal-hint {
  margin: 0 0 0 auto;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.78rem;
}

body.has-modal-open { overflow: hidden; }

/* ---------- code access modal ------------------------------------ */
.code-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: none;
}
.code-modal.is-open {
  display: flex;
  align-items: center;
  justify-content: center;
}
.code-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  cursor: zoom-out;
}
.code-modal-window {
  position: relative;
  width: min(440px, 92vw);
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
  animation: stl-modal-in 0.18s ease-out;
}
.code-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.code-modal-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
}
.code-modal-close {
  background: #f1f5f9;
  color: var(--ink-soft);
  border: none;
  width: 30px; height: 30px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}
.code-modal-close:hover { background: #e2e8f0; }
.code-modal-body { padding: 1.25rem; }
.code-modal-intro {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.code-check {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.7rem 0.85rem;
  margin-bottom: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--ink);
  transition: border-color 0.12s ease, background 0.12s ease;
}
.code-check:hover { background: #f8fafc; }
.code-check:has(input:checked) {
  border-color: var(--accent);
  background: rgba(37, 99, 235, 0.06);
}
.code-check input {
  width: 18px; height: 18px;
  margin-top: 0.1rem;
  accent-color: var(--accent);
  flex: 0 0 auto;
  cursor: pointer;
}
.code-modal-confirm {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s ease, opacity 0.12s ease;
}
.code-modal-confirm:hover:not(:disabled) { background: var(--accent-dark); }
.code-modal-confirm:disabled { opacity: 0.45; cursor: not-allowed; }
.code-modal-result {
  margin-top: 0.5rem;
  text-align: center;
}
.code-modal-result p {
  margin: 0 0 0.75rem;
  color: var(--ink);
  font-size: 0.95rem;
}
.code-modal-repo { font-size: 0.9rem; }

/* ---------- video modal (used by Method feature cards) ----------- */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
}
.video-modal.is-open {
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.62);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  cursor: zoom-out;
}
.video-modal-window {
  position: relative;
  width: min(960px, 94vw);
  max-height: 90vh;
  background: #0b1220;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  animation: stl-modal-in 0.18s ease-out;
}
.video-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.video-modal-title {
  margin: 0;
  color: #f1f5f9;
  font-size: 1rem;
  font-weight: 700;
}
.video-modal-close {
  background: rgba(255, 255, 255, 0.08);
  color: #f1f5f9;
  border: none;
  width: 32px; height: 32px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.video-modal-close:hover { background: rgba(255, 255, 255, 0.15); }
.video-modal-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  min-height: 0;
}
.video-modal-body video {
  width: 100%;
  height: 100%;
  max-height: calc(90vh - 50px);
  display: block;
  background: #000;
}

@media screen and (max-width: 640px) {
  .stl-modal-window { width: 96vw; height: 92vh; }
  .stl-modal-hint   { margin-left: 0; width: 100%; text-align: left; }
  /* stack picker below the stage on narrow screens */
  .stl-modal-body   { flex-direction: column; }
  .stl-modal-picker {
    flex: 0 0 auto;
    flex-direction: row;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .stl-modal-pick { flex: 1; }
  .thumb-preview  { display: none; }   /* skip hover-preview on touch */
}

/* ---------- video embed -------------------------------------------- */
.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.video-embed iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

/* ---------- bibtex ------------------------------------------------- */
.bibtex-heading {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin: 1.5rem 0 0.6rem;
  scroll-margin-top: 1.5rem;
}
.bibtex-heading:first-of-type { margin-top: 0.5rem; }
.bibtex-block { position: relative; margin-bottom: 0.75rem; }
.bibtex-block pre {
  background: #1a1d23;
  color: #e6e8eb;
  border-radius: 12px;
  padding: 1.5rem 1.5rem;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.6;
}
.bibtex-block code {
  background: transparent;
  color: inherit;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
.copy-button {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 0.35rem 0.7rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.12s ease;
}
.copy-button:hover { background: var(--accent); }

/* ---------- footer ------------------------------------------------- */
.footer {
  background: var(--bg-alt);
  color: var(--ink-soft);
  padding: 2.5rem 1.5rem;
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

/* ---------- responsive --------------------------------------------- */
@media screen and (max-width: 768px) {
  .publication-lockup   { gap: 0.65rem; transform: translateX(-1.25rem); }
  .publication-logo     { height: 3.35rem; }
  .publication-title    { font-size: 3.7rem !important; }
  .publication-subtitle { font-size: 1rem !important; }
  .papers-block         { grid-template-columns: 1fr; }
  .paper-title-line     { font-size: 1rem; }
  .paper-meta           { flex-wrap: wrap; justify-content: center; }
  .paper-row            { text-align: center; }
  .section              { padding: 2.5rem 1.1rem; }
  .abstract-text p, .acknowledgement-text p { text-align: left; }
  .carousel-arrow { width: 38px; height: 38px; }
}