/* Adam George — personal site
   Single shared stylesheet. No build step, no framework. */

:root {
  --max-width: 820px;
  --text: #221f1a;
  --muted: #5c574e;
  --bg: #faf8f3;
  --accent: #1a8043;
  --accent-hover: #27a35a;
  --border: #e6e1d6;
  --soft-bg: #f1ede3;
  --font: Charter, "Bitstream Charter", Georgia, Cambria, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

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

/* ---------- Header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}
.nav-brand:hover { text-decoration: none; color: var(--accent); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text);
  font-weight: 500;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  text-decoration: none;
}
.nav-links a.active { border-bottom: 2px solid var(--accent); }

/* ---------- Layout ---------- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 { font-size: 2.2rem; margin: 0 0 0.3rem; line-height: 1.2; }
h2 { font-size: 1.5rem; margin: 2.2rem 0 0.8rem; }
h3 { font-size: 1.2rem; margin: 1.6rem 0 0.5rem; }
.subtitle { font-size: 1.3rem; color: var(--muted); font-weight: 500; margin: 0 0 1.5rem; }

/* ---------- Home ---------- */
.intro {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  flex-wrap: wrap;
}
.intro-text { flex: 1 1 340px; }
.intro-photo { flex: 0 0 260px; max-width: 100%; }
.intro-photo img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.lead { font-size: 1.05rem; }
.home-pubs { margin-top: 2.75rem; }
.home-pubs h2 { border-bottom: 2px solid var(--border); padding-bottom: 0.3rem; }
.paper-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  margin: 1.3rem 0 0.5rem;
}
.paper { margin: 0; }
.paper-thumb { display: block; }
.paper img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  transition: box-shadow .15s, transform .15s;
}
.paper-thumb:hover img {
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}
.paper figcaption {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--muted);
}
.paper figcaption a { font-weight: 600; }
@media (max-width: 600px) {
  .paper-grid { grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
}

/* ---------- CV ---------- */
.cv-download { margin: 0.1rem 0 1.6rem; font-weight: 600; }
.cv-section { margin-bottom: 2rem; }
.cv-section h2 {
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.3rem;
}
.cv-entry { margin: 0 0 1.1rem; display: flow-root; }
.cv-entry .date {
  float: right;
  margin: 0 0 0.3rem 1.25rem;
  text-align: right;
  font-style: italic;
  color: var(--muted);
  white-space: nowrap;
}
.cv-desc { color: var(--muted); }
/* entries with no organisation line: add a gap after the title */
.cv-entry strong + br + .cv-desc { display: block; margin-top: 0.5rem; }
.cv-list { padding-left: 1.2rem; }
.cv-list li { margin-bottom: 0.6rem; }
.tag-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag-list li {
  background: var(--soft-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.25rem 0.9rem;
  font-size: 0.95rem;
}

/* ---------- Projects ---------- */
figure { margin: 1.5rem 0; }
figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
}
figcaption { font-size: 0.9rem; color: var(--muted); margin-top: 0.4rem; }
.channels { padding-left: 1.3rem; }
.channels li { margin-bottom: 0.7rem; }

/* ---------- Tabs (Projects) ---------- */
.tabs { margin-top: 1.5rem; }
.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
/* L1 / L2 tabs look like clickable buttons (rounded rectangles) */
.tab {
  background: var(--soft-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.85rem;
  font: inherit;
  font-size: 1.05rem;
  color: var(--muted);
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.tab:hover { color: var(--accent); border-color: var(--accent); }
.tab[aria-selected="true"] {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--bg);
  font-weight: 700;
}
.tabpanel { padding-top: 0.5rem; }
.tabpanel[hidden] { display: none; }
.tabpanel > :first-child { margin-top: 0.9rem; }

/* Level 2 — strand tabs (nested once): same buttons, a touch smaller */
.tabpanel .tabs { margin-top: 1rem; }
.tabpanel .tab { font-size: 0.95rem; padding: 0.34rem 0.7rem; }

/* Level 3 — country tabs (nested twice): pills */
.tabpanel .tabpanel .tab { border-radius: 20px; padding: 0.3rem 0.95rem; }
.tabpanel .tabpanel .tab[aria-selected="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* "Completed" badge + thesis status line */
.badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  padding: 0.08rem 0.5rem;
  margin-right: 0.4rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.thesis-status { margin: 0.3rem 0 1.3rem; color: var(--muted); }

/* ---------- Contact ---------- */
.contact-block a { font-weight: 600; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}
.footer-profiles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
}
.footer-profiles a { color: var(--muted); }
.footer-profiles a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0.8rem;
    margin-top: 1rem;
    align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .nav-links a.active { border-bottom: none; }
  h1 { font-size: 1.8rem; }
  .cv-entry .date { float: none; display: block; margin: 0 0 0.15rem; text-align: left; }
}

/* ---------- Print (PDF export) ---------- */
@media print {
  .nav-links,
  .nav-toggle,
  .cv-download { display: none; }
  .site-header,
  .site-footer { border: none; }
  .nav { padding: 0 0 0.4rem; }
  main { max-width: none; padding: 0.4rem 0 1rem; }
  .cv-section { page-break-inside: avoid; }
  a { text-decoration: none; }
  @page { margin: 1.6cm; }
}