/* Jackson Lab - Main CSS (Helios theme inspired) */

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #0070c0;
  --accent-dark: #005a9e;
  --bg-dark: #0a1628;
  --bg-mid: #0c1d35;
  --bg-light: #0e2444;
  --text: #e0e0e0;
  --text-muted: #aaa;
  --white: #ffffff;
  --card-bg: #0d2040;
  --border: rgba(255,255,255,0.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--white); }

h1,h2,h3,h4,h5 { font-weight: 600; line-height: 1.3; color: var(--white); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
p { margin-bottom: 1em; color: var(--text); }

/* ──────────────────────────────────────────
   NAVBAR
────────────────────────────────────────── */
#header {
  position: relative;
  z-index: 100;
}

nav#nav {
  background: rgba(10,22,40,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 0 2rem;
}

nav#nav ul { list-style: none; display: flex; align-items: center; gap: 0; margin: 0; }
nav#nav > ul > li { position: relative; }
nav#nav > ul > li > a {
  display: block;
  padding: 1rem 1.2rem;
  color: var(--text);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s, background 0.2s;
}
nav#nav > ul > li > a:hover,
nav#nav > ul > li.active > a { color: var(--white); background: rgba(91,155,213,0.15); }

/* dropdown */
nav#nav ul ul {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-light);
  min-width: 200px;
  border: 1px solid var(--border);
  border-radius: 0 0 6px 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  flex-direction: column;
}
nav#nav ul ul li a {
  display: block;
  padding: 0.7rem 1.2rem;
  color: var(--text);
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s;
}
nav#nav ul ul li a:hover { background: rgba(91,155,213,0.2); color: var(--white); }
nav#nav > ul > li:hover > ul { display: flex; }

.nav-logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white) !important;
  letter-spacing: 0.02em;
  margin-right: 1rem;
  text-transform: none !important;
  white-space: nowrap;
}
.nav-logo span { color: var(--accent); }

/* hamburger */
#nav-toggle { display: none; cursor: pointer; padding: 1rem; background: none; border: none; color: var(--white); font-size: 1.4rem; }

/* ──────────────────────────────────────────
   HERO
────────────────────────────────────────── */
#hero {
  min-height: 90vh;
  background:
    linear-gradient(135deg, rgba(10,20,50,0.20) 0%, rgba(15,52,96,0.15) 100%),
    url('../../SV2A2.png') center/cover no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
}

#hero h1 {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  color: var(--white);
  margin-bottom: 0.4rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
#hero h1 span { color: var(--accent); }
#hero .subtitle {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: rgba(255,255,255,0.8);
  margin-bottom: 2rem;
  max-width: 900px;
  white-space: nowrap;
}
#hero .btn-group { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }

/* ──────────────────────────────────────────
   BUTTONS
────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.8rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: all 0.25s;
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: var(--accent-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(91,155,213,0.4); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.1); color: var(--white); transform: translateY(-2px); }

/* ──────────────────────────────────────────
   SECTIONS
────────────────────────────────────────── */
section.wrapper, div.wrapper { padding: 5rem 2rem; }
.wrapper-dark { background: var(--bg-dark); }
.wrapper-mid  { background: var(--bg-mid); }
.wrapper-light { background: var(--bg-light); }
.wrapper-card { background: var(--card-bg); }

.container { max-width: 1100px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h2 { margin-bottom: 0.5rem; }
.section-header p { color: var(--text-muted); font-size: 1.05rem; }

/* ──────────────────────────────────────────
   CAROUSEL / CARDS
────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,0.4); }
.card img { width: 100%; height: 180px; object-fit: cover; display: block; }
.card-body { padding: 1.2rem; }
.card-body h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.card-body p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* ──────────────────────────────────────────
   RESEARCH ITEMS
────────────────────────────────────────── */
.research-item {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}
.research-item:last-child { border-bottom: none; }
.research-item img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  object-fit: cover;
  aspect-ratio: 4/3;
  background: var(--bg-light);
}
.research-item h3 { margin-bottom: 0.8rem; font-size: 1.3rem; }

/* ──────────────────────────────────────────
   TEAM
────────────────────────────────────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 2rem;
}
.team-card { text-align: center; }
.team-card .avatar {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  display: block;
  border: 3px solid var(--accent);
  background: var(--bg-light);
}
.team-card h3 { font-size: 1.05rem; margin-bottom: 0.2rem; }
.team-card p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

/* ──────────────────────────────────────────
   PUBLICATIONS
────────────────────────────────────────── */
.pub-list { list-style: none; }
.pub-list li {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.pub-list li:last-child { border-bottom: none; }
.pub-list .pub-title { font-weight: 600; color: var(--white); display: block; margin-bottom: 0.25rem; }
.pub-list .pub-authors { color: var(--text-muted); font-size: 0.9rem; }
.pub-list .pub-journal { color: var(--accent); font-style: italic; font-size: 0.9rem; }
.pub-list .pub-year { display: inline-block; background: var(--bg-light); color: var(--accent); padding: 0.1rem 0.5rem; border-radius: 3px; font-size: 0.8rem; margin-left: 0.5rem; }

/* ──────────────────────────────────────────
   NEWS
────────────────────────────────────────── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: transform 0.25s;
}
.news-card:hover { transform: translateY(-4px); }
.news-card .news-date { font-size: 0.8rem; color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.5rem; }
.news-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.news-card p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* ──────────────────────────────────────────
   VACANCIES
────────────────────────────────────────── */
.vacancy-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 1.5rem;
}
.vacancy-card h3 { margin-bottom: 0.5rem; }
.vacancy-card .tag {
  display: inline-block;
  background: rgba(91,155,213,0.2);
  color: var(--accent);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-right: 0.5rem;
  margin-bottom: 1rem;
}

/* ──────────────────────────────────────────
   CONTACT
────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-info h3 { margin-bottom: 1rem; }
.contact-info p { color: var(--text-muted); }
.contact-detail { display: flex; align-items: flex-start; gap: 0.8rem; margin-bottom: 1rem; }
.contact-detail .icon { color: var(--accent); font-size: 1.2rem; margin-top: 0.1rem; flex-shrink: 0; }

form .field { margin-bottom: 1.2rem; }
form label { display: block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.3rem; }
form input, form textarea, form select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--white);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
form input:focus, form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(91,155,213,0.07);
}
form textarea { resize: vertical; min-height: 130px; }

/* ──────────────────────────────────────────
   FOOTER
────────────────────────────────────────── */
#footer {
  background: #0b0f1a;
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 1.5rem;
  color: var(--text-muted);
}
#footer .footer-inner { max-width: 1100px; margin: 0 auto; }
#footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
#footer h4 { color: var(--white); margin-bottom: 0.8rem; font-size: 1rem; }
#footer ul { list-style: none; }
#footer ul li { margin-bottom: 0.4rem; }
#footer ul li a { color: var(--text-muted); font-size: 0.9rem; }
#footer ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
}

/* Social icons */
.social-icons { display: flex; gap: 0.8rem; margin-top: 0.8rem; }
.social-icons a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s;
}
.social-icons a:hover { background: var(--accent); color: var(--white); }

/* ──────────────────────────────────────────
   PAGE HERO (inner pages)
────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--bg-mid), var(--bg-light));
  padding: 4rem 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 3rem); margin-bottom: 0.5rem; }
.page-hero p { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

/* ──────────────────────────────────────────
   PAGE TOC
────────────────────────────────────────── */
.page-toc {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
  padding: 0.9rem 1.2rem;
  margin: 0 auto 0;
  max-width: 860px;
  list-style: none;
}
.page-toc li a {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.page-toc li a:hover { color: var(--accent); border-color: var(--accent); }
.page-toc li + li::before {
  content: '·';
  margin-right: 1rem;
  color: var(--border);
}

/* ──────────────────────────────────────────
   TIMELINE
────────────────────────────────────────── */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--bg-light); }
.timeline-item { position: relative; margin-bottom: 2.5rem; padding-left: 1.5rem; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.15rem;
  top: 0.5rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-dark);
}
.timeline-year { font-size: 1.1rem; font-weight: 700; color: var(--accent); margin-bottom: 0.2rem; }
.timeline-item h3 { font-size: 1rem; margin-bottom: 0.3rem; }
.timeline-item p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* ──────────────────────────────────────────
   FUNDER LOGOS
────────────────────────────────────────── */
.funder-grid { display: flex; flex-wrap: wrap; gap: 2rem; align-items: center; justify-content: center; }
.funder-badge {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 2rem;
  text-align: center;
  min-width: 160px;
  font-weight: 600;
  color: var(--text-muted);
}

/* ──────────────────────────────────────────
   UTILITIES
────────────────────────────────────────── */
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-2 { margin-top: 2rem; }
.divider { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }
.highlight-box {
  background: rgba(91,155,213,0.1);
  border-left: 4px solid var(--accent);
  padding: 1.2rem 1.5rem;
  border-radius: 0 6px 6px 0;
  margin: 1.5rem 0;
}

/* ──────────────────────────────────────────
   RESPONSIVE
────────────────────────────────────────── */
@media (max-width: 768px) {
  nav#nav > ul { display: none; flex-direction: column; width: 100%; }
  nav#nav > ul.open { display: flex; }
  nav#nav > ul > li > a { padding: 0.8rem 1rem; }
  nav#nav ul ul { position: static; box-shadow: none; border: none; border-left: 2px solid var(--accent); margin-left: 1rem; }
  nav#nav > ul > li:hover > ul { display: none; }
  nav#nav > ul > li.open > ul { display: flex; }
  #nav-toggle { display: block; }
  nav#nav { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; }

  .research-item { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  #footer .footer-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
}