/* =========================================================
   Academic project page – physics simulation / 3D reconstruction
   Custom styles on top of Bulma.
========================================================= */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8fb;
  --color-text: #1f2533;
  --color-muted: #5b6478;
  --color-accent: #4f46e5;          /* indigo-600 */
  --color-accent-strong: #3730a3;   /* indigo-800 */
  --color-accent-soft: #eef2ff;     /* indigo-50  */
  --color-grid: rgba(79, 70, 229, 0.08);
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --font-sans: 'Google Sans', 'Noto Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Castoro', 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 4rem; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Limit overall content width slightly more than Bulma default */
.container.is-max-desktop { max-width: 980px !important; }

/* ===== Navbar ===== */
.navbar.is-light {
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid rgba(15,23,42,0.06);
}
.navbar-item:hover { color: var(--color-accent) !important; }

/* ===== Hero ===== */
.hero-banner {
  background:
    radial-gradient(circle at 20% 0%, rgba(79,70,229,0.08), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(14,165,233,0.07), transparent 50%),
    linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}
/* subtle blueprint grid behind hero */
.hero-banner::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.6), transparent 80%);
  pointer-events: none;
}

.venue-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  margin-bottom: 1.25rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid rgba(79,70,229,0.15);
}

.publication-title {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem) !important;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem !important;
}
.title-accent {
  background: linear-gradient(90deg, var(--color-accent) 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
  font-size: 0.9em;
}

.publication-authors {
  margin: 0.5rem 0;
  line-height: 1.8;
}
.publication-authors a {
  color: var(--color-text);
  border-bottom: 1px dashed rgba(79,70,229,0.5);
  text-decoration: none;
}
.publication-authors a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.publication-links {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}
.publication-links .button {
  background: #1f2533;
  color: white;
  border: none;
  font-weight: 500;
  padding: 0 1.1rem;
  height: 2.4rem;
  transition: transform 0.15s ease, background 0.15s ease;
}
.publication-links .button:hover {
  background: var(--color-accent);
  transform: translateY(-1px);
}

/* ===== Sections ===== */
.section {
  padding: 4rem 1.5rem;
}
.section-alt {
  background: var(--color-bg-alt);
}
.section-title {
  position: relative;
  margin-bottom: 1.5rem !important;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  margin-top: 0.6rem;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-accent), #06b6d4);
}
.section-title.has-text-centered::after {
  margin-left: auto; margin-right: auto;
}

/* ===== Teaser / figures ===== */
.teaser-section { padding-top: 1rem; padding-bottom: 1rem; }
.teaser-figure, .pipeline-figure {
  text-align: center;
  margin: 0 auto;
}
.teaser-figure video,
.teaser-figure img,
.pipeline-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: #0b0d12;
}
.teaser-figure figcaption,
.pipeline-figure figcaption {
  margin-top: 0.9rem;
  font-size: 0.92rem;
}

/* ===== Abstract ===== */
.abstract-text p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text);
}
.abstract-text strong { color: var(--color-accent-strong); }

/* ===== Video embed ===== */
.publication-video {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: #000;
}
.publication-video iframe,
.publication-video video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: 0;
}

/* ===== Carousel ===== */
.results-carousel .item {
  padding: 0 0.5rem;
  text-align: center;
}
.results-carousel video {
  width: 65%;
  max-width: 100%;
  display: inline-block;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: #0b0d12;
}
.results-carousel .caption {
  margin-top: 0.6rem;
  text-align: center;
  font-size: 0.92rem;
  color: var(--color-muted);
}

/* ===== Comparison ===== */
.comparison-video,
.comparison-frame {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: #0b0d12;
}
.caption-strong {
  font-weight: 600;
  color: var(--color-accent-strong);
  margin-bottom: 0.5rem;
}

/* ===== Result table ===== */
.result-table {
  font-size: 0.95rem;
}
.result-table th,
.result-table td {
  padding: 0.5em 1em;
}
.result-table thead th {
  border-bottom: 2px solid #d7dbe4 !important;
}

/* Wide per-scene tables */
.metrics-table,
.benchmark-table {
  font-size: 0.82rem;
  min-width: 980px;
}
.metrics-table th,
.metrics-table td,
.benchmark-table th,
.benchmark-table td {
  padding: 0.4em 0.5em;
  text-align: center !important;
}
/* Method column: sticky + wider */
.metrics-table td:nth-child(1),
.benchmark-table td:nth-child(1) {
  text-align: left !important;
  position: sticky;
  left: 0;
  background: inherit;
  z-index: 1;
  min-width: 120px;
}
/* All data columns share the same min-width so the colspan headers
   (Chick1, torus, …) sit exactly centred over their two sub-columns. */
.metrics-table td:nth-child(n+2),
.metrics-table th:nth-child(n+2),
.benchmark-table td:nth-child(n+2),
.benchmark-table th:nth-child(n+2) {
  min-width: 54px;
}
.metrics-table thead th[colspan],
.benchmark-table thead th[colspan] {
  border-bottom: 1px solid #d7dbe4;
  font-weight: 600;
  color: var(--color-accent-strong);
}
.metrics-table tbody tr:nth-child(odd) td:first-child,
.benchmark-table tbody tr:nth-child(odd) td:first-child { background: #fafafa; }
.metrics-table tbody tr:nth-child(even) td:first-child,
.benchmark-table tbody tr:nth-child(even) td:first-child { background: #f5f5f5; }
.metrics-table tr.is-selected td:first-child,
.benchmark-table tr.is-selected td:first-child { background: var(--color-accent-soft) !important; }
.result-table tr.is-selected {
  background: var(--color-accent-soft) !important;
  color: var(--color-accent-strong) !important;
}

/* ===== Application cards ===== */
.application-card {
  background: white;
  padding: 1.6rem 1.4rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  height: 100%;
  text-align: left;
  border: 1px solid rgba(15,23,42,0.05);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.application-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.application-card .icon { color: var(--color-accent); margin-bottom: 0.6rem; }
.application-card .title { margin-bottom: 0.4rem !important; }
.application-card p { color: var(--color-muted); font-size: 0.95rem; }

/* ===== BibTeX block ===== */
pre.bibtex {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  overflow-x: auto;
}
pre.bibtex code { background: transparent; color: inherit; padding: 0; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-alt);
  padding: 2rem 1.5rem;
}

/* ===== ICML logo (navbar + venue badge) ===== */
.navbar-icml-badge {
  display: inline-flex !important;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 1rem !important;
  margin-left: 0.6rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #eef2ff 0%, #cffafe 100%);
  color: var(--color-accent-strong);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  border: 1.5px solid rgba(79,70,229,0.4);
  box-shadow: 0 2px 8px rgba(79,70,229,0.18);
  pointer-events: none;
}
.navbar-icml-badge img {
  width: 32px;
  height: 32px;
  display: block;
}

.venue-badge-icml {
  padding: 0.6rem 1.5rem;
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #eef2ff 0%, #cffafe 100%);
  border: 1.5px solid rgba(79,70,229,0.4);
  box-shadow: 0 6px 20px rgba(79,70,229,0.18);
  gap: 0.7rem;
}
.venue-badge-icml strong { color: var(--color-accent-strong); }
.venue-badge-logo {
  width: 52px;
  height: 52px;
  margin-right: 0.25rem;
  display: inline-block;
  vertical-align: middle;
}

/* ===== Qualitative slider carousel ===== */
.qual-shared-slider-wrap {
  margin: 1.1rem auto 0;
  max-width: 100%;
}

.qual-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  margin: 0.75rem 0 0;
  background: linear-gradient(
    90deg,
    var(--color-accent) 0%,
    var(--color-accent) var(--qual-progress, 0%),
    rgba(79, 70, 229, 0.18) var(--qual-progress, 0%),
    rgba(79, 70, 229, 0.18) 100%
  );
  border-radius: 999px;
  outline: none;
  cursor: pointer;
}
.qual-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #ffffff;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.2);
  cursor: grab;
  transition: transform 0.1s ease;
}
.qual-slider::-webkit-slider-thumb:active { transform: scale(1.1); cursor: grabbing; }
.qual-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #ffffff;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.2);
  cursor: grab;
}
.qual-slider::-moz-range-track { background: transparent; height: 6px; }

/* ===== Robot pair carousel ===== */
.robot-carousel { margin-top: 1rem; }
.robot-carousel .item { padding: 0 0.5rem; }
.robot-carousel .robot-pair {
  margin: 0 auto;
  max-width: 65%;
}
.robot-carousel .robot-pair .column { padding: 0.4rem 0.6rem; }
.robot-carousel .comparison-video,
.robot-carousel .comparison-frame {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: #0b0d12;
}
.robot-carousel .caption {
  margin-top: 0.6rem;
  text-align: center;
  font-size: 0.92rem;
  color: var(--color-muted);
}

/* ===== Responsive tweaks ===== */
@media (max-width: 768px) {
  .section { padding: 3rem 1rem; }
  .publication-title { font-size: 1.6rem !important; }
  .publication-links .button { padding: 0 0.8rem; height: 2.2rem; font-size: 0.85rem; }
  .navbar-icml-badge { margin-left: 0; margin-top: 0.4rem; }
  .robot-carousel .robot-pair .column { padding: 0.3rem; }
}