/* Digital Forest Lab — shared styles */

:root {
  --paper: #F4F6F1;
  --tint: #E7EDE1;
  --white: #FFFFFF;
  --ink: #1E2B23;
  --ink-2: #4B5A51;
  --rule: #CCD5C5;
  --canopy: #3A6B29;
  --canopy-dark: #244719;
  --leaf: #9BC255;
  --bark: #7B5435;

  --serif: "Source Serif 4", "Source Serif Pro", Georgia, Cambria, "Times New Roman", serif;
  --sans: "Atkinson Hyperlegible Next", "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --wrap: 72rem;
  --measure: 40rem;
}

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

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 1rem; background: var(--paper); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.65;
  font-optical-sizing: auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1 0 auto; }

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

a { color: var(--canopy); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--canopy-dark); text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--canopy); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3 { font-family: var(--serif); color: var(--ink); line-height: 1.15; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 4.8vw, 3.6rem); font-weight: 500; margin: 0 0 1rem; max-width: 18ch; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.05rem); font-weight: 500; margin: 0 0 0.75rem; }
h3 { font-size: 1.25rem; font-weight: 600; margin: 0 0 0.5rem; }
p { margin: 0 0 1rem; max-width: var(--measure); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.5rem; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 10;
  background: var(--canopy-dark); color: var(--white);
  font-family: var(--sans); padding: 0.6rem 1rem; border-radius: 6px;
}
.skip-link:focus { top: 1rem; color: var(--white); }

/* ---------- header ---------- */
.site-header { border-bottom: 1px solid var(--rule); background: var(--paper); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  padding-top: 0.9rem; padding-bottom: 0.9rem;
}
.brand { display: flex; align-items: center; gap: 0.75rem; color: var(--ink); text-decoration: none; min-width: 0; flex: 0 1 auto; }
.brand:hover { color: var(--ink); }
.brand-mark { width: 40px; height: 40px; flex: none; }
.brand-name { display: block; font-size: 1.3rem; font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }
.brand-sub { display: block; font-family: var(--sans); font-size: 0.8rem; color: var(--ink-2); line-height: 1.3; }

.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.15rem; }
.site-nav a {
  display: block; padding: 0.45rem 0.42rem; border-radius: 6px;
  font-family: var(--sans); font-size: 0.9rem; color: var(--ink); text-decoration: none;
}
.site-nav a:hover { background: var(--tint); color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--canopy-dark); font-weight: 600; box-shadow: inset 0 -2px 0 var(--canopy); border-radius: 6px 6px 0 0; }

.nav-toggle {
  display: none;
  font-family: var(--sans); font-size: 0.95rem; font-weight: 600;
  background: transparent; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 6px; padding: 0.5rem 0.9rem; cursor: pointer;
}
.nav-toggle:hover { background: var(--tint); }

/* Menu collapses behind the Menu button whenever it doesn't fit on one row (site.js adds .nav-collapsed). */
.nav-collapsed .header-inner { flex-wrap: wrap; }
.nav-collapsed .nav-toggle { display: inline-block; flex: none; }
.nav-collapsed .brand { flex: 1 1 0; }
.nav-collapsed .site-nav { display: none; width: 100%; }
.nav-collapsed .site-nav.open { display: block; }
.nav-collapsed .site-nav ul { flex-direction: column; padding-bottom: 0.5rem; }
.nav-collapsed .site-nav a { padding: 0.65rem 0.5rem; font-size: 1.05rem; }
.nav-collapsed .site-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--canopy); border-radius: 0 6px 6px 0; padding-left: 0.9rem; }
@media (min-width: 601px) { .brand { flex: none; } .nav-collapsed .brand { flex: 1 1 0; } }

/* ---------- buttons ---------- */
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.button {
  display: inline-block; padding: 0.7rem 1.15rem; border-radius: 6px;
  font-family: var(--sans); font-size: 1rem; font-weight: 600; line-height: 1.3; text-decoration: none;
  background: var(--canopy); color: var(--white); border: 2px solid var(--canopy);
}
.button:hover { background: var(--canopy-dark); border-color: var(--canopy-dark); color: var(--white); }
.button.secondary { background: transparent; color: var(--canopy-dark); }
.button.secondary:hover { background: var(--tint); color: var(--canopy-dark); }

/* ---------- home: hero ---------- */
.hero { padding: 3rem 0 2.5rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2.5rem; align-items: center; }
.lead { font-size: 1.28rem; line-height: 1.55; }
.hero .actions { margin-top: 1.75rem; }

.scan { margin: 0; }
.scan canvas {
  display: block; width: 100%; height: clamp(300px, 42vw, 520px);
  cursor: grab; touch-action: pan-y;
}
.scan canvas:active { cursor: grabbing; }
.scan figcaption, .caption { font-family: var(--sans); font-size: 0.85rem; line-height: 1.45; color: var(--ink-2); margin-top: 0.4rem; max-width: 34rem; }
.swatch { display: inline-block; width: 0.7em; height: 0.7em; border-radius: 50%; margin: 0 0.25em 0 0.1em; vertical-align: 0; }

/* ---------- sections ---------- */
.section { padding: 3.5rem 0; }
.section.tint { background: var(--tint); }
.section-intro { font-size: 1.1rem; color: var(--ink-2); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
.section-head a { font-family: var(--sans); font-weight: 600; }

.axes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem; margin-top: 2rem; }
.axis { border-top: 2px solid var(--ink); padding-top: 1rem; }
.axis h3 a { color: var(--ink); text-decoration: none; }
.axis h3 a:hover { color: var(--canopy-dark); text-decoration: underline; }
.axis p { font-size: 1.02rem; }

.join { display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.join p { margin-bottom: 0; }

/* ---------- inner pages ---------- */
.page-head { padding-top: 3rem; padding-bottom: 1.5rem; }
.page-head .lead { color: var(--ink-2); }
.section-tight { padding-top: 1rem; padding-bottom: 2.5rem; }
.prose-wrap { padding-bottom: 1rem; }
.page-end { padding-top: 1rem; padding-bottom: 3.5rem; }

.jump { margin: 0 0 1rem; padding-left: 1.2rem; }
.jump li { margin-bottom: 0.25rem; }

.research-axis { padding: 2.5rem 0; border-top: 1px solid var(--rule); }
.axis-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 2.5rem; align-items: start; }
.axis-grid.single { grid-template-columns: minmax(0, 1fr); }
.axis-grid h3 { margin-top: 1.75rem; font-size: 1.05rem; font-family: var(--sans); }
.video-figure { margin: 0.4rem 0 0; }
.video-figure video { display: block; width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 4px; background: #fff; }
.scale-legend { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.3rem 0.6rem; align-items: center; max-width: 22rem; margin-top: 0.6rem; font-family: var(--sans); font-size: 0.78rem; line-height: 1.2; color: var(--ink-2); }
.scale-bar { display: block; height: 0.6rem; border: 1px solid var(--rule); border-radius: 2px; }
.scale-leaves { background: linear-gradient(to right, #f4faf2, #c2e6ba, #71c375, #218a45, #004116); }
.scale-wood { background: linear-gradient(to right, #fef3e8, #fdcc9d, #fc8b38, #d74601, #7d2201); }
.scale-ticks { display: flex; justify-content: space-between; font-variant-numeric: tabular-nums; }
.scale-unit sup { font-size: 0.7em; line-height: 0; }
.image-figure { margin: 0.4rem 0 0; }
.image-figure a.zoom { display: block; cursor: zoom-in; }
.image-figure img { display: block; width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 4px; background: #fff; }
dialog.lightbox { padding: 0; border: 0; background: transparent; max-width: 96vw; max-height: 94vh; overflow: visible; }
dialog.lightbox::backdrop { background: rgba(15, 22, 17, 0.82); }
.lightbox img { display: block; width: auto; height: auto; max-width: 96vw; max-height: 94vh; background: #fff; border-radius: 4px; }
.lightbox form { position: absolute; top: 0.5rem; right: 0.5rem; margin: 0; }
.lightbox-close { font-family: var(--sans); font-size: 0.85rem; font-weight: 600; padding: 0.35rem 0.8rem; border-radius: 6px; border: 1px solid #1E2B23; background: #fff; color: #1E2B23; cursor: pointer; }
.lightbox-close:hover { background: #E7EDE1; }
@media (max-width: 700px) {
  dialog.lightbox { width: 100vw; height: 100vh; max-width: 100vw; max-height: 100vh; overflow: auto; }
  .lightbox img { max-width: none; max-height: none; width: 1100px; border-radius: 0; }
  .lightbox form { position: fixed; top: 0.5rem; right: 0.5rem; z-index: 2; }
}
.video-wrap { position: relative; }
.video-tag { position: absolute; left: 0.5rem; padding: 0.1rem 0.5rem; border-radius: 3px; background: rgba(255, 255, 255, 0.88); color: #1E2B23; box-shadow: 0 0 0 1px rgba(30, 43, 35, 0.14); font-family: var(--sans); font-size: 0.75rem; font-weight: 600; line-height: 1.5; pointer-events: none; }
.video-tag-top { top: 0.5rem; }
.video-tag-bottom { top: calc(50% + 0.5rem); }
.figures { display: grid; gap: 1rem; }
.figures img { width: auto; max-width: 100%; background: var(--white); border-radius: 4px; }
.mini-pubs { padding-left: 1.2rem; margin: 0; font-size: 1rem; max-width: var(--measure); }
.mini-pubs li { margin-bottom: 0.6rem; }

/* ---------- news ---------- */
.news-list { display: grid; }
.news-item {
  display: grid; grid-template-columns: 10rem minmax(0, 1fr); gap: 1.5rem;
  padding: 1.1rem 0; border-top: 1px solid var(--rule);
}
.news-item[hidden] { display: none; }
.news-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 0.35rem; margin: 0; font-family: var(--sans); font-size: 0.9rem; color: var(--ink-2); }
.news-body p { margin: 0; }
.news-body p + ul { margin-top: 0.6rem; }
.digest-list { padding-left: 1.2rem; margin: 0; font-size: 1rem; max-width: var(--measure); }
.digest-list li { margin-bottom: 0.5rem; }

.tag { display: inline-block; padding: 0.1rem 0.55rem; border-radius: 999px; font-family: var(--sans); font-size: 0.78rem; font-weight: 600; line-height: 1.5; }
.tag-team { background: #E0EBD3; color: #2F5523; }
.tag-research { background: #DAE7EE; color: #1F4C63; }
.tag-publications { background: #F0E5D7; color: #6A4526; }
.tag-meetings { background: #E8E2EF; color: #4B3A66; }
.section.tint .tag-team { background: var(--white); }

.news-layout { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 2.5rem; padding-bottom: 3.5rem; }
.news-aside nav { position: sticky; top: 1.5rem; }
.aside-label { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-2); margin-bottom: 0.4rem; }
.year-links { list-style: none; padding: 0; margin: 0; font-family: var(--sans); }
.year-links a { display: block; padding: 0.2rem 0; text-decoration: none; }
.year-links a:hover { text-decoration: underline; }

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.5rem; }
.no-js-hide { display: none; }
.chip {
  font-family: var(--sans); font-size: 0.9rem; font-weight: 600;
  padding: 0.4rem 0.85rem; border-radius: 999px; cursor: pointer;
  background: transparent; color: var(--ink); border: 1px solid var(--rule);
}
.chip:hover { background: var(--tint); }
.chip[aria-pressed="true"] { background: var(--canopy-dark); border-color: var(--canopy-dark); color: var(--white); }
html:not(.js) .filters { display: none; }
.filter-status { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-2); min-height: 1.3em; margin-bottom: 1rem; }

.news-year { margin-bottom: 2rem; }
.year-title { font-size: 2.4rem; font-weight: 400; margin-bottom: 0.25rem; color: var(--canopy-dark); }
.news-year[hidden] { display: none; }

/* ---------- people ---------- */
.people { list-style: none; margin: 1.25rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr)); gap: 2rem 1.5rem; }
.person img, .avatar { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 30%; border-radius: 4px; background: var(--tint); }
.person img.contain { object-fit: contain; padding: 0.9rem; }
.avatar { display: grid; place-items: center; font-size: 2.6rem; font-weight: 500; color: var(--canopy); background: var(--tint); }
.person-name { font-weight: 600; font-size: 1.05rem; line-height: 1.3; margin: 0.65rem 0 0.15rem; }
.person-name a { color: var(--ink); }
.person-role, .person-detail { font-family: var(--sans); font-size: 0.88rem; line-height: 1.4; color: var(--ink-2); margin: 0; }
.person-detail { margin-top: 0.3rem; font-size: 0.8rem; }
.former { border-top: 1px solid var(--rule); padding-top: 2.5rem; }
.former h3 { font-family: var(--sans); font-size: 1rem; margin-top: 1.75rem; }
.people.compact { grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr)); gap: 1.5rem 1.25rem; margin-top: 0.75rem; }
.people.compact .person-name { font-size: 0.98rem; }
.people.compact .avatar { font-size: 2rem; }

/* ---------- publications ---------- */
.page-head .button { margin-top: 0.25rem; }
.pub-group { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 1.5rem; padding: 1.25rem 0 0.5rem; border-top: 1px solid var(--rule); }
.pub-year { font-family: var(--serif); font-size: 1.5rem; font-weight: 400; color: var(--canopy-dark); margin: 0; line-height: 1.3; }
.pubs { list-style: none; padding: 0; margin: 0; }
.pub { margin-bottom: 1.25rem; }
.pub p { max-width: 46rem; }
.pub-title { font-weight: 600; line-height: 1.4; margin: 0 0 0.2rem; }
.pub-meta { font-size: 1rem; color: var(--ink-2); margin: 0; }
.pub-meta strong { color: var(--ink); font-weight: 600; }
.other-head { margin-top: 3rem; }
#articles + .pub-group, #other-publications + .pub-group { border-top: none; }
.wrap > .pub-group:last-child { margin-bottom: 3.5rem; }

/* ---------- code and data ---------- */
.resources { padding-bottom: 1.5rem; }
.resources:last-of-type { padding-bottom: 3.5rem; }
.resource-list { list-style: none; margin: 0; padding: 0; }
.resource { padding: 1.4rem 0; border-top: 1px solid var(--rule); }
.resource h3 { font-size: 1.35rem; font-weight: 500; margin-bottom: 0.4rem; }
.resource h3 a { color: var(--ink); text-decoration-color: var(--rule); }
.resource h3 a:hover { color: var(--canopy-dark); text-decoration-color: currentColor; }
.resource-meta { font-size: 1rem; color: var(--ink-2); }
.resource-links { margin: 0.25rem 0 0; }
.resource-links .button { font-size: 0.92rem; padding: 0.45rem 0.9rem; }

/* ---------- equipment ---------- */
.equipment { list-style: none; margin: 0 0 3.5rem; padding: 0; display: grid; gap: 1.5rem; }
.equip { display: grid; grid-template-columns: 12rem minmax(0, 1fr); gap: 2rem; align-items: start; padding-top: 1.5rem; border-top: 1px solid var(--rule); }
.equip-img { background: var(--white); border-radius: 4px; padding: 0.75rem; }
.equip-img img { width: 100%; height: 18rem; object-fit: contain; }
.equip h2 { font-size: 1.5rem; margin-bottom: 0.15rem; }
.equip-img.equip-img-bare { background: none; padding: 0; }
.equip-img.equip-img-bare img { height: auto; object-fit: initial; border-radius: 4px; }
.equip-model { font-family: var(--sans); color: var(--ink-2); font-size: 0.95rem; }

/* ---------- opportunities & contact ---------- */
.opp-grid, .contact-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 3rem; padding-bottom: 3.5rem; align-items: start; }
.postings { list-style: none; padding: 0; margin: 0; }
.postings li { padding: 0.9rem 0; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.postings li:last-child { border-bottom: 1px solid var(--rule); }
.file-type { font-family: var(--sans); font-size: 0.78rem; font-weight: 600; color: var(--ink-2); border: 1px solid var(--rule); border-radius: 4px; padding: 0 0.4rem; flex: none; }
.contact-card { background: var(--tint); border-radius: 8px; padding: 1.5rem 1.75rem; }
.contact-wrap { padding-bottom: 3.5rem; }
.contact-wrap .contact-card { max-width: 34rem; }
.contact-card h2 { font-size: 1.4rem; }
address { font-style: normal; margin-bottom: 1rem; }
.contact-grid h2 { font-size: 1.4rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--canopy-dark); color: #E3ECDB; padding: 3rem 0 2.5rem; font-family: var(--sans); font-size: 0.95rem; line-height: 1.55; }
.site-footer a { color: var(--white); }
.site-footer a:hover { color: var(--leaf); }
.site-footer p { margin: 0 0 0.75rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1.2fr; gap: 2rem; }
.footer-name { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; color: var(--white); }
.footer-head { font-weight: 600; color: var(--white); }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.4rem; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-grid, .axis-grid, .opp-grid, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-top: 2rem; }
  .axes { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .news-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .news-aside nav { position: static; margin-bottom: 1rem; }
  .year-links { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
  .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .video-figure, .image-figure { margin-top: 1.5rem; max-width: 34rem; }
}
@media (max-width: 600px) {
  body { font-size: 1.0625rem; }
  .news-item, .pub-group { grid-template-columns: minmax(0, 1fr); gap: 0.5rem; }
  .news-meta { flex-direction: row; align-items: center; gap: 0.6rem; }
  .equip { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
  .equip-img img { height: 15rem; }
  .equip-img.equip-img-bare { max-width: 12rem; }
  .header-inner { gap: 0.75rem; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-name { font-size: 1.15rem; }
  .brand-sub { font-size: 0.72rem; }
  .people { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem 1rem; }
  .people.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media print {
  .site-header nav, .nav-toggle, .filters, .news-aside, .skip-link, .scan { display: none !important; }
  body { background: #fff; }
  .site-footer { background: none; color: #000; }
  .site-footer a { color: #000; }
}