/* ============================
   SCALE Lab — style.css
   ============================ */

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

:root {
  --navy:    #0e1a2b;
  --navy-mid:#1a2e47;
  --accent:  #1d6fa4;
  --accent-l:#d4e8f5;
  --gold:    #b8903a;
  --text:    #1a1a1a;
  --text-2:  #4a5568;
  --text-3:  #718096;
  --border:  #d2d8e0;
  --bg:      #f8f7f4;
  --white:   #ffffff;
  --ff-serif: 'EB Garamond', Georgia, serif;
  --ff-sans:  'Instrument Sans', system-ui, sans-serif;
  --ff-mono:  'DM Mono', monospace;
  --radius:   6px;
  --shadow:   0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

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

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

.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248,247,244,.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}
.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--navy);
  color: #fff;
  font-family: var(--ff-serif);
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  letter-spacing: -.02em;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-name { font-weight: 600; font-size: .95rem; letter-spacing: .03em; }
.logo-full { font-size: .7rem; color: var(--text-3); letter-spacing: .04em; text-transform: uppercase; }

.site-nav { display: flex; gap: 0; }
.nav-link {
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  padding: .5rem .9rem;
  border-radius: var(--radius);
  transition: color .15s, background .15s;
  text-decoration: none;
  letter-spacing: .01em;
}
.nav-link:hover, .nav-link.active {
  color: var(--navy);
  background: var(--accent-l);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text);
}

/* ── Hero ── */
.hero {
  background: var(--navy);
  color: #fff;
  padding: 5rem 0 3rem;
  position: relative;
  overflow: hidden;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 620px;
}
.hero-badge {
  font-family: var(--ff-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: #94a8bf;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--ff-serif);
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: #f0ece4;
}
.hero-title em { color: #7ab8da; font-style: italic; }
.hero-sub {
  font-size: 1.05rem;
  color: #94a8bf;
  line-height: 1.75;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: .6rem 1.4rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
  transition: all .15s;
  text-decoration: none;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #1558845; text-decoration: none; filter: brightness(1.1); }
.btn-ghost { background: transparent; color: #94a8bf; border: 1px solid #2d4a63; }
.btn-ghost:hover { background: #1a2e47; color: #fff; text-decoration: none; }

.hero-visual {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 55%;
  max-width: 620px;
  opacity: .25;
  pointer-events: none;
}
.hero-svg { width: 100%; height: auto; }
.node { fill: #7ab8da; }
.node-a { fill: #7ab8da; }
.node-b { fill: #4a8baf; }
.node-c { fill: #2d6080; }
.edge { stroke: #4a6a80; stroke-width: 1.5; }
.node-label { fill: #94a8bf; font-family: var(--ff-mono); font-size: 11px; text-anchor: middle; }

/* ── Sections ── */
.section { padding: 4.5rem 0; }
.section-title {
  font-family: var(--ff-serif);
  font-size: 1.85rem;
  font-weight: 400;
  color: var(--navy);
  margin-bottom: 2.5rem;
  padding-bottom: .75rem;
  border-bottom: 2px solid var(--navy);
  display: inline-block;
}
.section-subtitle {
  font-size: .85rem;
  color: var(--text-3);
  font-family: var(--ff-mono);
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}

/* ── Cards ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: .75rem;
}
.card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: .5rem;
}
.card p { font-size: .9rem; color: var(--text-2); line-height: 1.65; }

/* ── News ── */
.news-section { background: var(--white); }
.news-list { list-style: none; }
.news-item {
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
  padding: .9rem 0;
  border-bottom: 1px solid var(--border);
}
.news-item:last-child { border-bottom: none; }
.news-date {
  font-family: var(--ff-mono);
  font-size: .78rem;
  color: var(--text-3);
  white-space: nowrap;
  min-width: 72px;
}
.news-text { font-size: .925rem; color: var(--text-2); }
.news-text strong { color: var(--navy); font-weight: 600; }

/* ── Affiliation strip ── */
.affil-strip {
  background: var(--navy-mid);
  padding: 1rem 0;
}
.affil-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .8rem;
  color: #7a96b0;
  font-family: var(--ff-mono);
  letter-spacing: .04em;
}
.affil-dot { color: #3a5a78; }

/* ── Footer ── */
.site-footer {
  background: var(--navy);
  padding: 1.25rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: .8rem;
  color: #4a6a80;
  font-family: var(--ff-mono);
}

/* ── Team page ── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}
.member-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.member-card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.member-avatar {
  width: 100%;
  aspect-ratio: 1;
  background: var(--navy-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-serif);
  font-size: 2.2rem;
  color: #7ab8da;
  letter-spacing: -.02em;
}
.member-info { padding: 1rem; }
.member-name { font-weight: 600; font-size: .95rem; color: var(--navy); margin-bottom: .2rem; }
.member-role { font-size: .8rem; color: var(--text-3); font-family: var(--ff-mono); }
.member-research { font-size: .82rem; color: var(--text-2); margin-top: .5rem; line-height: 1.5; }

.pi-card {
  display: flex;
  gap: 2rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  margin-bottom: 3rem;
  align-items: flex-start;
}
.pi-avatar {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-serif);
  font-size: 2.4rem;
  color: #7ab8da;
  flex-shrink: 0;
}
.pi-details h3 { font-family: var(--ff-serif); font-size: 1.5rem; font-weight: 400; color: var(--navy); margin-bottom: .25rem; }
.pi-details .pi-title { font-size: .82rem; color: var(--text-3); font-family: var(--ff-mono); margin-bottom: .75rem; }
.pi-details p { font-size: .9rem; color: var(--text-2); line-height: 1.7; }
.pi-links { margin-top: 1rem; display: flex; gap: .75rem; }
.pi-link { font-size: .8rem; font-family: var(--ff-mono); color: var(--accent); border: 1px solid var(--accent-l); padding: .3rem .7rem; border-radius: var(--radius); }
.pi-link:hover { background: var(--accent-l); text-decoration: none; }

.group-label {
  font-family: var(--ff-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1rem;
  margin-top: 2.5rem;
}

/* ── Publications page ── */
.pub-filters { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 2rem; }
.pub-filter {
  font-size: .8rem;
  font-family: var(--ff-mono);
  padding: .35rem .85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-2);
  background: var(--white);
  transition: all .15s;
}
.pub-filter:hover, .pub-filter.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.pub-year-group { margin-bottom: 2.5rem; }
.pub-year {
  font-family: var(--ff-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-3);
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}
.pub-entry {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.pub-entry:last-child { border-bottom: none; }
.pub-venue-badge {
  font-family: var(--ff-mono);
  font-size: .7rem;
  padding: .2rem .55rem;
  border-radius: var(--radius);
  background: var(--accent-l);
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: .2rem;
  font-weight: 500;
}
.pub-content {}
.pub-title { font-weight: 600; font-size: .95rem; color: var(--navy); margin-bottom: .25rem; }
.pub-authors { font-size: .83rem; color: var(--text-2); margin-bottom: .25rem; }
.pub-authors em { color: var(--navy); font-style: normal; font-weight: 600; }
.pub-links { display: flex; gap: .6rem; margin-top: .4rem; }
.pub-link {
  font-size: .75rem;
  font-family: var(--ff-mono);
  color: var(--accent);
  border: 1px solid var(--border);
  padding: .2rem .55rem;
  border-radius: var(--radius);
}
.pub-link:hover { background: var(--accent-l); text-decoration: none; }

.pub-journal { font-style: italic; color: var(--text); }

/* ── Contact page ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.contact-box h3 { font-family: var(--ff-serif); font-size: 1.2rem; font-weight: 400; color: var(--navy); margin-bottom: 1rem; }
.contact-row { display: flex; gap: .75rem; padding: .6rem 0; border-bottom: 1px solid var(--border); align-items: baseline; }
.contact-row:last-child { border-bottom: none; }
.contact-label { font-family: var(--ff-mono); font-size: .75rem; color: var(--text-3); min-width: 80px; text-transform: uppercase; letter-spacing: .04em; }
.contact-val { font-size: .9rem; color: var(--text-2); }
.contact-val a { color: var(--accent); }
.opening-list { list-style: none; }
.opening-item { padding: 1rem 0; border-bottom: 1px solid var(--border); }
.opening-item:last-child { border-bottom: none; }
.opening-title { font-weight: 600; font-size: .95rem; color: var(--navy); margin-bottom: .3rem; }
.opening-desc { font-size: .875rem; color: var(--text-2); line-height: 1.65; }
.opening-tag {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: .7rem;
  padding: .15rem .5rem;
  border-radius: 999px;
  background: #e8f5e0;
  color: #2d6a1a;
  margin-right: .4rem;
  margin-top: .4rem;
}

/* Page hero (inner pages) */
.page-hero {
  background: var(--navy);
  color: #fff;
  padding: 3rem 0 2.5rem;
}
.page-hero h1 {
  font-family: var(--ff-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  color: #f0ece4;
  margin-bottom: .5rem;
}
.page-hero p { color: #94a8bf; font-size: .95rem; }

/* Mobile nav */
@media (max-width: 680px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: .5rem 1rem 1rem;
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero-visual { display: none; }
  .contact-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .pi-card { flex-direction: column; gap: 1.25rem; }
  .pi-avatar { width: 72px; height: 72px; font-size: 1.6rem; }
}