*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --crimson:      #A41E34;
  --crimson-dark: #7d1628;
  --crimson-pale: #f8eef0;
  --ink:          #1a1a1a;
  --ink-soft:     #4a4a52;
  --ink-light:    #8a8a92;
  --border:       #e6d5d8;
  --white:        #ffffff;
  --font:         'Roboto', system-ui, sans-serif;
  --max-w:        760px;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--crimson); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; }

/* NAV */
.proj-nav {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px clamp(20px, 5vw, 60px);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.back-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--crimson);
}
.back-link:hover { text-decoration: none; color: var(--crimson-dark); }
.proj-nav-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
}

/* MAIN */
.proj-main {
  padding: 60px clamp(20px, 5vw, 60px) 80px;
}
.proj-container {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* HEADER */
.proj-header {
  margin-bottom: 36px;
}
.proj-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--crimson);
  background: rgba(164,30,52,0.10);
  padding: 4px 11px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.proj-header h1 {
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--ink);
  margin-bottom: 16px;
}
.proj-authors {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 6px;
}
.proj-venue {
  font-size: 14px;
  color: var(--ink-light);
  font-style: italic;
  margin-bottom: 18px;
}

.proj-links { display: flex; gap: 10px; flex-wrap: wrap; }
.proj-btn {
  display: inline-block;
  padding: 8px 20px;
  background: var(--crimson);
  color: var(--white);
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 600;
  transition: background 0.18s, transform 0.15s;
  border: 1.5px solid var(--crimson);
}
.proj-btn:hover {
  background: var(--crimson-dark);
  border-color: var(--crimson-dark);
  transform: translateY(-1px);
  text-decoration: none;
  color: var(--white);
}
.proj-btn-outline {
  background: transparent;
  color: var(--crimson);
}
.proj-btn-outline:hover {
  background: var(--crimson-pale);
  color: var(--crimson);
}

/* TEASER */
.proj-teaser {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 44px;
  box-shadow: 0 8px 32px rgba(164,30,52,0.12);
  background: var(--crimson-pale);
}
.proj-teaser img {
  width: 100%;
  object-fit: contain;
  max-height: 400px;
}

/* SECTION */
.proj-section {
  margin-bottom: 36px;
}
.proj-section h2 {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--crimson-pale);
}
.proj-section p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.78;
}

.proj-bullets {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.proj-bullets li {
  font-size: 15px;
  color: var(--ink-soft);
  padding-left: 18px;
  position: relative;
}
.proj-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--crimson);
  font-size: 12px;
  top: 3px;
}

/* ANIMATIONS */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in.delay-1 { transition-delay: 0.12s; }
.fade-in.delay-2 { transition-delay: 0.24s; }
.fade-in.delay-3 { transition-delay: 0.36s; }

/* NAV scrolled shadow */
.proj-nav.scrolled { box-shadow: 0 2px 18px rgba(164,30,52,0.09); }

/* FOOTER */
.proj-footer {
  background: var(--crimson-pale);
  border-top: 1px solid var(--border);
  padding: 20px clamp(20px, 5vw, 60px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  color: var(--ink-light);
}
.proj-footer a { color: var(--crimson); }
.proj-footer a:hover { text-decoration: none; color: var(--crimson-dark); }

/* AFFILIATION BADGES */
.proj-affiliations {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 10px 0 14px;
}
.aff-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 13px;
  border-radius: 20px;
}
.aff-badge.ku      { background: rgba(164,30,52,0.10);  color: #A41E34; }
.aff-badge.ucla    { background: rgba(39,116,174,0.10); color: #2774AE; }
.aff-badge.ndsu    { background: rgba(0,105,60,0.10);   color: #00693C; }
.aff-badge.kaist   { background: rgba(0,91,170,0.10);   color: #005BAA; }
.aff-badge.samsung { background: rgba(20,40,160,0.10);  color: #1428A0; }
.aff-badge.nvidia  { background: rgba(118,185,0,0.12);  color: #4a7700; }
.aff-note { font-size: 12px; color: var(--ink-light); }

/* FIGURE BLOCKS */
.fig-block { margin: 28px 0; }
.fig-block img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.10);
  display: block;
}
.fig-caption {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.65;
}
.fig-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 28px 0;
}
.fig-grid-2 .fig-block { margin: 0; }
.fig-subsection {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.proj-section .fig-subsection:first-of-type {
  border-top: none;
  margin-top: 16px;
  padding-top: 0;
}
.fig-subsection h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}
.fig-subsection-note {
  font-size: 13.5px;
  color: var(--ink-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* DEMO VIDEO */
.proj-video-wrap {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 44px;
  box-shadow: 0 8px 32px rgba(164,30,52,0.12);
  background: #111;
}
.proj-video-wrap video {
  width: 100%;
  display: block;
  max-height: 480px;
}
.proj-video-caption {
  padding: 9px 14px;
  font-size: 13px;
  color: var(--ink-light);
  text-align: center;
  background: var(--crimson-pale);
}

/* RESULT TABLES */
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 12px 0 4px;
}
.result-table th {
  background: var(--crimson-pale);
  color: var(--ink);
  font-weight: 600;
  padding: 9px 14px;
  text-align: left;
  border-bottom: 2px solid var(--border);
  font-size: 13.5px;
}
.result-table td {
  padding: 8px 14px;
  border-bottom: 1px solid #f0f0f0;
  color: var(--ink-soft);
}
.result-table tr:last-child td { border-bottom: none; }
.result-table .row-ours td { background: rgba(164,30,52,0.04); color: var(--ink-soft); }
.result-table .best { font-weight: 700; color: var(--ink); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 8px 0 20px; }
.result-table.compact { font-size: 12px; }
.result-table.compact th { padding: 6px 8px; font-size: 11.5px; white-space: nowrap; }
.result-table.compact td { padding: 5px 8px; }
.result-table td.u { text-decoration: underline; text-underline-offset: 3px; }
.row-section td { font-weight: 600; background: rgba(164,30,52,0.06); color: var(--ink); text-align: center; border-top: 2px solid var(--border); }
.row-gray td { color: #bbb !important; font-weight: 400; }
.row-diff td { font-weight: 700; background: rgba(164,30,52,0.04); }
.sub-heading { font-size: 15px; font-weight: 600; color: var(--ink); margin: 20px 0 8px; }
.sub-note { font-size: 13.5px; color: var(--ink-light); margin-bottom: 10px; }

/* ACKNOWLEDGEMENT */
.ack-section p { font-size: 13.5px; color: var(--ink-light); line-height: 1.76; }

/* 2-col halves → single col on mobile */
.grid-halves {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 24px 32px;
  margin: 28px 0;
}
@media (max-width: 640px) {
  .fig-grid-2 {
    grid-template-columns: 1fr !important;
  }
  .grid-halves {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto !important;
  }
  .grid-halves > * {
    grid-column: auto !important;
    grid-row: auto !important;
    align-self: auto !important;
  }
}