/* =========================================================================
   Local Politics Lab — localpoliticslab.org
   Minimalist academic design. Warm paper, ink text, deep-pine accent.
   ========================================================================= */

:root {
  --paper:      #FBFAF7;
  --paper-soft: #F3F1EA;
  --ink:        #1A1A1A;
  --ink-soft:   #3C3C3A;
  --muted:      #6B6B6B;
  --line:       #E2DFD6;
  --accent:     #1F4E4A;   /* deep pine/teal */
  --accent-dk:  #143733;
  --accent-tint:#E9F0EE;

  --maxw: 1080px;
  --gutter: clamp(1.25rem, 5vw, 4rem);

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.65;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dk); text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; line-height: 1.15; color: var(--ink); }

/* Anchor offset so sticky header doesn't cover section tops */
section[id] { scroll-margin-top: 90px; }

.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.1rem;
}

/* =========================================================================
   Header / nav
   ========================================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 64px;
}
.brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--serif); }
.brand a { color: var(--ink); display: flex; align-items: center; gap: 0.6rem; }
.brand a:hover { text-decoration: none; }
.brand .mark {
  width: 30px; height: 30px; flex: none; border-radius: 6px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  font-weight: 600; font-size: 0.95rem; letter-spacing: -0.02em;
}
.brand .name { font-size: 1.06rem; font-weight: 600; letter-spacing: -0.01em; }
.brand .name small { display:block; font-family: var(--sans); font-weight: 500; font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-top: 1px; }

.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-size: 0.92rem; font-weight: 500; color: var(--ink-soft);
  padding: 0.2rem 0; position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -2px;
  height: 2px; background: var(--accent); transition: right 0.22s ease;
}
.nav-links a:hover { color: var(--accent-dk); text-decoration: none; }
.nav-links a:hover::after { right: 0; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: 8px; padding: 0.45rem 0.6rem; cursor: pointer; color: var(--ink);
  font-size: 1rem; line-height: 1;
}

/* =========================================================================
   Hero
   ========================================================================= */
.hero { padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 4.5rem); border-bottom: 1px solid var(--line); }
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.3rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.4rem;
  max-width: 16ch;
}
.hero .lede {
  font-size: clamp(1.12rem, 2.4vw, 1.4rem);
  line-height: 1.5; color: var(--ink-soft);
  max-width: 42ch; margin: 0 0 1.4rem;
}
.hero .sub { color: var(--muted); max-width: 54ch; font-size: 1.02rem; margin: 0 0 2rem; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 0.8rem; }

.btn {
  display: inline-block; font-size: 0.95rem; font-weight: 500;
  padding: 0.7rem 1.3rem; border-radius: 999px; border: 1px solid var(--accent);
  transition: background 0.18s ease, color 0.18s ease;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dk); border-color: var(--accent-dk); color: #fff; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--accent); }
.btn-ghost:hover { background: var(--accent-tint); text-decoration: none; }

/* =========================================================================
   Generic section
   ========================================================================= */
.section { padding: clamp(3.2rem, 7vw, 5.5rem) 0; border-bottom: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); letter-spacing: -0.015em; margin: 0 0 0.8rem; }
.section-head p { color: var(--ink-soft); margin: 0; font-size: 1.06rem; }

/* mission — full-bleed feature band (inspired by a deep hero banner) */
.mission { background: var(--accent-dk); border-bottom: none; color: #EAF1EF; }
.mission .eyebrow { color: #8FB3AD; }
.mission .lead-quote { font-size: clamp(1.4rem, 3.3vw, 2.15rem); font-family: var(--serif); font-weight: 400; line-height: 1.38; color: #FBFAF7; max-width: 26ch; margin: 0; }
.mission .pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.8rem 2.4rem; margin-top: clamp(2.4rem, 5vw, 3.4rem); }
.mission .pillar h4 { font-family: var(--sans); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: #8FB3AD; margin: 0 0 0.4rem; }
.mission .pillar p { font-family: var(--sans); font-size: 0.98rem; color: #C8D8D4; margin: 0; max-width: none; line-height: 1.6; }

/* =========================================================================
   Research — vertical themed list (UPL-inspired)
   ========================================================================= */
.research-item { padding: clamp(1.8rem, 4vw, 2.6rem) 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr); gap: clamp(1rem, 4vw, 3rem); }
.research-item:first-of-type { border-top: none; }
.research-item .num { font-family: var(--serif); font-size: 0.95rem; color: var(--accent); letter-spacing: 0.05em; }
.research-item h3 { font-size: clamp(1.35rem, 2.8vw, 1.9rem); letter-spacing: -0.01em; margin: 0.3rem 0 0; }
.research-item .theme-desc { font-family: var(--serif); font-style: italic; font-size: clamp(1.1rem, 1.6vw, 1.3rem); color: var(--ink-soft); line-height: 1.55; margin: 0.4rem 0 0; max-width: 56ch; align-self: center; }
.paper-list { list-style: none; margin: 0; padding: 0; }
.paper-list li { padding: 0.85rem 0; border-bottom: 1px solid var(--line); }
.paper-list li:last-child { border-bottom: none; }
.paper-list .title { font-weight: 500; color: var(--ink); }
.paper-list .meta { display: block; font-size: 0.9rem; color: var(--muted); margin-top: 0.2rem; }
.paper-list .venue { font-style: italic; }
.pdf-link { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase; margin-left: 0.5rem; white-space: nowrap; }
.award { display: inline-block; font-size: 0.78rem; color: var(--accent-dk); background: var(--accent-tint); border-radius: 4px; padding: 0.05rem 0.4rem; margin-top: 0.35rem; }

/* =========================================================================
   People
   ========================================================================= */
.pi { display: grid; grid-template-columns: 190px 1fr; gap: clamp(1.5rem, 4vw, 2.8rem); align-items: start; }
.pi .photo { width: 190px; border-radius: 12px; aspect-ratio: 1 / 1; object-fit: cover; box-shadow: 0 1px 0 var(--line); }
.pi h3 { font-size: 1.5rem; margin: 0 0 0.15rem; }
.pi .role { color: var(--accent); font-weight: 600; font-size: 0.95rem; margin: 0 0 1rem; }
.pi p { margin: 0 0 1rem; color: var(--ink-soft); }
.pi .links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; font-size: 0.92rem; }
.pi .links a { font-weight: 500; }

/* members (e.g., postdocs) */
.members { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.members > h4 { font-family: var(--sans); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin: 0 0 1.4rem; }
.members-note { max-width: 62ch; color: var(--ink-soft); font-size: 0.98rem; margin: 0; }
.member-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2rem; }
.member { display: grid; grid-template-columns: 88px 1fr; gap: 1.1rem; align-items: start; }
.member .avatar-mono { width: 88px; height: 88px; border-radius: 12px; background: var(--accent-tint); color: var(--accent-dk); display: grid; place-items: center; font-family: var(--serif); font-size: 1.7rem; font-weight: 500; }
.member .photo { width: 88px; height: 88px; border-radius: 12px; object-fit: cover; }
.member h4 { font-family: var(--serif); font-weight: 500; font-size: 1.18rem; margin: 0 0 0.1rem; text-transform: none; letter-spacing: 0; color: var(--ink); }
.member .role { color: var(--accent); font-weight: 600; font-size: 0.85rem; margin: 0 0 0.5rem; }
.member p { margin: 0 0 0.6rem; font-size: 0.94rem; color: var(--ink-soft); }
.member .links { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; font-size: 0.88rem; }

/* principal investigators */
.pis { margin-top: 0; }
.pis .pi + .pi { margin-top: clamp(2rem, 4vw, 3rem); padding-top: clamp(2rem, 4vw, 3rem); border-top: 1px solid var(--line); }

/* undergraduate research fellows */
.members-note + .fellow-grid { margin-top: 1.6rem; }
.fellow-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 160px)); gap: 1.8rem 1.6rem; }
.fellow { margin: 0; text-align: center; }
.fellow .photo { display: block; width: 100%; aspect-ratio: 1 / 1; border-radius: 12px; object-fit: cover; box-shadow: 0 1px 0 var(--line); margin: 0 0 0.7rem; }
.fellow figcaption { font-family: var(--serif); font-weight: 500; font-size: 1.05rem; color: var(--ink); line-height: 1.3; }

.collab { margin-top: clamp(2.5rem, 5vw, 3.5rem); }
.collab h4 { font-family: var(--sans); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin: 0 0 1rem; }
.collab ul { columns: 2; column-gap: 3rem; list-style: none; margin: 0; padding: 0; max-width: 640px; }
.collab li { padding: 0.28rem 0; color: var(--ink-soft); font-size: 0.98rem; break-inside: avoid; }

/* =========================================================================
   Publications
   ========================================================================= */
.pubs-group { margin-bottom: 2.6rem; }
.pubs-group h3 { font-size: 1.2rem; letter-spacing: -0.005em; margin: 0 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--accent); display: inline-block; }
.pub-list { list-style: none; margin: 0; padding: 0; }
.pub-list li { padding: 0.9rem 0; border-bottom: 1px solid var(--line); font-size: 0.98rem; line-height: 1.55; }
.pub-list li:last-child { border-bottom: none; }
.pub-list .authors { color: var(--ink); }
.pub-list .ptitle { color: var(--ink); font-weight: 500; text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }
.pub-list a.ptitle:hover { color: var(--accent-dk); text-decoration-color: var(--accent); }
.pub-list .pvenue { font-style: italic; color: var(--ink-soft); }
.pub-list .year { color: var(--muted); }
.pub-list .award { display: block; }

/* =========================================================================
   Footer
   ========================================================================= */
.site-footer { background: var(--accent-dk); color: #E7EEEC; padding: clamp(2.8rem, 6vw, 4rem) 0; border-bottom: none; }
.site-footer a { color: #CFE0DC; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: start; }
.site-footer .fbrand { font-family: var(--serif); font-size: 1.4rem; color: #fff; margin: 0 0 0.5rem; }
.site-footer p { margin: 0.2rem 0; color: #BFD2CE; font-size: 0.96rem; }
.site-footer .contact a { font-weight: 500; }
.site-footer .fund { margin-top: 0.9rem; font-size: 0.9rem; color: #9DB6B1; }
.site-footer .fine { margin-top: 2rem; padding-top: 1.4rem; border-top: 1px solid rgba(255,255,255,0.14); font-size: 0.85rem; color: #9DB6B1; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 820px) {
  body { font-size: 17px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }

  .research-item { grid-template-columns: 1fr; gap: 1rem; }
  .pi { grid-template-columns: 1fr; }
  .pi .photo { width: 150px; }
  .fellow-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 1.4rem 1rem; }
  .collab ul { columns: 1; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}