/* Layout and typography follow the Nerfies project-page template. */

/* Colors follow the USC identity palette (identity.usc.edu/color):
   cardinal and gold as primaries, black and 70K gray for text on white.
   Cardinal is never tinted and gold is never shaded or used for text. */
:root {
  color-scheme: light;
  --text: #000;
  --strong: #000;
  --muted: #767676;           /* Gray 70K */
  --line: #cccccc;            /* Gray 30K */
  --cardinal: #990000;
  --gold: #ffcc00;
  --gold-light: #fff5cc;      /* gold at 20%, for fills behind black text */
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font: 400 16px/1.5 "Noto Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

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

b, strong { color: var(--strong); font-weight: 700; }

.container {
  width: 100%;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 16px;
}

.container.wide { max-width: 1100px; }

.section { padding: 32px 0; }

.content p { margin: 0 0 1em; text-align: justify; }
.content p:last-child { margin-bottom: 0; }

h2.title {
  margin: 0 0 24px;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--strong);
  text-align: center;
}

h2.title::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  margin: 8px auto 0;
  background: var(--gold);
}

h3.subtitle {
  margin: 32px 0 16px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--strong);
  text-align: center;
}

/* Hero */

.hero {
  padding: 48px 0 24px;
  text-align: center;
}

.hero .container { max-width: 1100px; }

.publication-title {
  margin: 0;
  font: 600 2rem/1.125 "Google Sans", sans-serif;
  color: var(--strong);
}

.venue {
  margin: 14px 0 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cardinal);
}

.publication-authors {
  margin: 16px auto 0;
  max-width: 760px;
  font: 400 1.25rem/1.6 "Google Sans", sans-serif;
}

.author { color: #000; white-space: nowrap; }
.author a { color: inherit; }

.affiliations {
  margin: 10px 0 0;
  font: 400 1rem/1.5 "Google Sans", sans-serif;
  color: var(--strong);
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: #000;
  font-size: 1rem;
  line-height: 1.5;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.button:hover { border-color: var(--cardinal); color: var(--cardinal); text-decoration: none; }
.button svg { width: 1em; height: 1em; }
.button svg.logo { width: auto; height: 1.15em; }
.button small { font-size: 0.7rem; color: var(--muted); }
.button.is-soon { color: var(--muted); cursor: default; pointer-events: none; }

/* Teaser */

.teaser img { width: 100%; }

.teaser-text {
  margin: 16px 0 0;
  text-align: justify;
}

.teaser-text q { font-style: italic; }

/* Stats */

.stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stats li {
  padding: 18px 16px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.03);
  text-align: center;
}

.stat-num {
  display: block;
  margin-bottom: 6px;
  font: 600 1.9rem/1.1 "Google Sans", sans-serif;
  color: var(--cardinal);
}

.stat-label { font-size: 0.85rem; line-height: 1.45; color: var(--muted); }

/* Boxes */

.box {
  margin-bottom: 24px;
  padding: 30px 35px;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.03);
}

.finding-title {
  margin: 0 0 18px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--strong);
  text-align: center;
}

.finding-title .num { color: var(--cardinal); margin-right: 4px; }

figure { margin: 0 0 18px; }

figure img { margin: 0 auto; }

.fig-medium { max-width: 720px; width: 100%; }

figcaption {
  margin: 10px auto 0;
  max-width: 760px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Method steps */

.steps {
  list-style: none;
  counter-reset: step;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.steps li {
  counter-increment: step;
  padding: 18px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.03);
}

.steps h4 { margin: 0; font-size: 1rem; font-weight: 600; color: var(--strong); }

.steps h4::before {
  content: counter(step);
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--cardinal);
  color: #fff;
  font-size: 0.75rem;
  vertical-align: 1px;
}

.steps p { margin: 0; font-size: 0.9rem; line-height: 1.5; color: var(--muted); }

.steps p.math {
  margin: 10px 0 12px;
  font-size: 1.05rem;
  color: var(--strong);
  white-space: nowrap;
}

p.math.display { text-align: center; overflow-x: auto; overflow-y: hidden; padding: 4px 0; }

/* Tables */

.table-wrap { overflow-x: auto; margin: 22px 0; }

table {
  margin: 0 auto;
  border-collapse: collapse;
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}

caption {
  caption-side: top;
  padding-bottom: 8px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

th, td { padding: 8px 14px; white-space: nowrap; }

thead th {
  border-top: 2px solid var(--strong);
  border-bottom: 1px solid var(--strong);
  font-weight: 600;
  color: var(--strong);
  text-align: right;
}

thead th:first-child, tbody th { text-align: left; }
tbody th { font-weight: 400; }
td { text-align: right; }
tbody tr { border-bottom: 1px solid var(--line); }
tbody tr:last-child { border-bottom: 2px solid var(--strong); }
tr.ours { background: var(--gold-light); }
tr.ours th { box-shadow: inset 3px 0 0 var(--gold); }

/* Takeaway */

.takeaway {
  margin-top: 8px;
  padding: 20px 28px;
  border-radius: 10px;
  background: var(--gold-light);
  border: 1px solid var(--gold);
  font-size: 1.05rem;
  text-align: center;
}

/* BibTeX */

.bib-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.bib-head h2.title { margin: 0; text-align: left; }
.bib-head h2.title::after { margin-left: 0; }

.copy {
  font: inherit;
  font-size: 0.85rem;
  padding: 4px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--strong);
  cursor: pointer;
}

.copy:hover { border-color: var(--cardinal); color: var(--cardinal); }

pre {
  margin: 0;
  padding: 1.25em 1.5em;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--strong);
}

/* Footer */

.footer {
  margin-top: 32px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.footer p { margin: 0 0 6px; }

/* Responsive */

@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .hero { padding-top: 32px; }
  .publication-title { font-size: 1.5rem; }
  .venue { font-size: 1.05rem; }
  .publication-authors { font-size: 1.05rem; }
  .box { padding: 20px 16px; }
  .stats { grid-template-columns: 1fr; }
  .content p, .teaser-text { text-align: left; }
  th, td { padding: 8px; }
}