/* Act with Intent (INDI) — project page
   Plain academic styling: white ground, Charter/Georgia serif, booktabs tables.
   The light-green "ours" highlight matches the tables in the paper. */

:root {
  --ink: #111111;
  --muted: #555555;
  --faint: #888888;
  --link: #1a5fa8;
  --rule-heavy: #333333;
  --rule-light: #bbbbbb;
  --ours-bg: #e9f4e9;      /* rowcolor{green!10}, as in the paper's tables */
  --green: #1E7D3C;
  --green-ink: #176230;
  --serif: Charter, "Bitstream Charter", Georgia, Cambria, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: Menlo, Consolas, "Liberation Mono", monospace;
}

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

html { overflow-x: clip; }

body {
  background: #ffffff;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

.page { max-width: 920px; margin: 0 auto; padding: 0 20px 40px; }

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

a { color: var(--green-ink); }
a:hover { color: #114f28; }

p { margin: 0 0 14px; }

section { margin-top: 44px; }

/* full-bleed light band */
.band {
  background: #f6f6f3;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding: 36px calc(50vw - 50%) 40px;
}

h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}
h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  border-radius: 2px;
  background: var(--green);
  margin-top: 9px;
}
h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 36px 0 10px;
}

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

/* ---------- header ---------- */

.header { text-align: center; padding-top: 44px; }

.title-main {
  font-size: clamp(42px, 7vw, 58px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.title-main em { font-style: italic; color: var(--green); }
.title-sub {
  font-size: clamp(19px, 3vw, 24px);
  color: #333333;
  margin: 12px 0 0;
}

.authors { margin: 20px 0 2px; font-size: 19px; }
.authors a { text-decoration: none; }
.authors a:hover { text-decoration: underline; }
.advising { font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.affil { font-size: 17px; margin-bottom: 2px; }
.venue { color: var(--muted); font-size: 16px; margin-bottom: 20px; }

.links { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--sans);
  font-size: 14.5px; font-weight: 500;
  color: #ffffff; background: #222222;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: 20px;
}
.btn:hover { background: #000000; color: #ffffff; }

.btn-soon { background: #4a4a48; cursor: default; }
.btn-soon:hover { background: #4a4a48; }
.soon {
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.22);
  padding: 2px 7px;
  border-radius: 10px;
}

/* ---------- figures ---------- */

.figure { margin: 26px 0 22px; }
.figure img { margin: 0 auto; }
.figure figcaption, .video-item figcaption {
  margin-top: 10px;
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted);
}
.chart-fig img { max-width: min(760px, 100%); }
.chart-fig { text-align: left; }
.chart-fig figcaption { max-width: 760px; }

.header + .figure { margin-top: 34px; }

.keyline {
  text-align: center;
  font-family: var(--sans);
  font-size: 15px;
  color: #555555;
  margin: 14px 0 0;
}
.keyline b { color: var(--green-ink); font-size: 17px; }

.c-green { color: #2a7d2e; font-weight: 600; }
.c-red { color: #c22a2a; font-weight: 600; }
.c-orange { color: #d9640c; font-weight: 600; }

/* ---------- abstract ---------- */

.abstract { text-align: justify; hyphens: auto; }

/* ---------- videos ---------- */

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 20px 0 4px;
}
.video-item { margin: 0; }
.video-item video {
  width: 100%;
  aspect-ratio: 720 / 1100;
  object-fit: contain;
  background: #000;
  border-radius: 10px;
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.14);
}
.video-item figcaption { font-size: 13px; }

/* ---------- method ---------- */

.method-list { margin: 0 0 14px 22px; }
.method-list li { margin-bottom: 12px; }

/* ---------- tables (booktabs) ---------- */

.table-wrap { overflow-x: auto; margin: 14px 0 10px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
  line-height: 1.45;
  border-top: 2px solid var(--rule-heavy);
  border-bottom: 2px solid var(--rule-heavy);
}
th, td { padding: 6px 12px; text-align: center; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th {
  font-weight: 700;
  border-bottom: 1px solid var(--rule-heavy);
}
thead th.sub { font-weight: 400; font-style: italic; font-size: 14.5px; }
thead th.cgroup { border-bottom: none; }
thead tr:first-child th[colspan] { padding-bottom: 2px; }
tr.rule td { border-top: 1px solid var(--rule-light); }
tr.avg td { border-top: 1px solid var(--rule-light); font-weight: 700; }
tr.ours td, td.ours-c { background: var(--ours-bg); }
td.ind { padding-left: 28px; }

.table-note {
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 6px;
}

/* ---------- analysis figures ---------- */

.fig-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 10px 0 18px;
}
.fig-trio .figure { margin: 8px 0; }
.fig-trio img { background: #ffffff; border: 1px solid #e2e2de; }

/* ---------- bibtex ---------- */

.bibtex-soon {
  background: #f7f7f5;
  border: 1px solid #dddddd;
  padding: 16px 18px;
  margin-top: 14px;
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--muted);
}

.bibtex { position: relative; margin-top: 14px; }
.bibtex pre {
  background: #f7f7f5;
  border: 1px solid #dddddd;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: #222222;
}
#copy-bib {
  position: absolute; top: 8px; right: 8px;
  font-family: var(--sans); font-size: 12px;
  color: #444444; background: #ffffff;
  border: 1px solid #cccccc;
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
}
#copy-bib:hover { background: #eeeeee; }

/* ---------- footer ---------- */

footer {
  margin-top: 48px;
  border-top: 1px solid #dddddd;
  padding-top: 18px;
  text-align: center;
}
footer p { font-family: var(--sans); font-size: 13px; color: var(--faint); }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .fig-trio { grid-template-columns: 1fr; }
  .fig-trio .figure { max-width: 480px; margin-left: auto; margin-right: auto; }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  section { margin-top: 36px; }
  .band { padding-top: 28px; padding-bottom: 32px; }
  .abstract { text-align: left; hyphens: none; }
  th, td { padding: 5px 8px; }
}

@media (max-width: 460px) {
  .video-grid { grid-template-columns: 1fr; }
  .video-item { max-width: 340px; margin: 0 auto; }
}