/* Jiang Lab — jiang-lab.org */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Tokens ── */
:root {
  --sidebar-w: 240px;
  --bg:           #ffffff;
  --sidebar:      #f5f5f5;
  --surface:      #ffffff;
  --surface-2:    #f3f4f6;
  --border:       #e5e7eb;
  --text:         #1e293b;
  --text-2:       #475569;
  --text-3:       #94a3b8;
  --accent:       #0d7a66;
  --accent-h:     #0a6556;
  --accent-light: #cde5e0;
  --accent-text:  #ffffff;
  --radius:       8px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:           #111917;
    --sidebar:      #0c1410;
    --surface:      #182019;
    --surface-2:    #1e2921;
    --border:       #283628;
    --text:         #daeae4;
    --text-2:       #76b09f;
    --text-3:       #4a7a6a;
    --accent:       #2dbda0;
    --accent-h:     #3acfb0;
    --accent-light: #083d30;
    --accent-text:  #ffffff;
  }
}

:root[data-theme="dark"] {
  --bg:           #111917;
  --sidebar:      #0c1410;
  --surface:      #182019;
  --surface-2:    #1e2921;
  --border:       #283628;
  --text:         #daeae4;
  --text-2:       #76b09f;
  --text-3:       #4a7a6a;
  --accent:       #2dbda0;
  --accent-h:     #3acfb0;
  --accent-light: #083d30;
  --accent-text:  #ffffff;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: var(--text); text-wrap: balance; }

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 36px 22px 28px;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-logo { margin-bottom: 36px; }

.sidebar-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  display: block;
  letter-spacing: -0.02em;
}
.sidebar-name:hover { text-decoration: none; }

.sidebar-tagline {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 5px;
  line-height: 1.4;
}

.sidebar-nav { list-style: none; flex: 1; }
.sidebar-nav li + li { margin-top: 2px; }

.sidebar-nav a {
  display: block;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-2);
  text-decoration: none;
  padding: 7px 11px;
  border-radius: 6px;
  transition: background 0.12s, color 0.12s;
}

.sidebar-nav a:hover { background: var(--surface); color: var(--text); }
.sidebar-nav a.active { background: var(--surface); color: var(--accent); font-weight: 600; }

.nav-tool a { color: var(--accent) !important; font-weight: 600 !important; }
.nav-tool a:hover { background: var(--accent-light) !important; }
.nav-tool a.active { background: var(--accent-light) !important; }

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: 24px;
}

.sidebar-social { display: flex; gap: 14px; align-items: center; margin-bottom: 14px; }

.social-link {
  color: var(--text-3);
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: color 0.12s;
}
.social-link:hover { color: var(--accent); text-decoration: none; }
.social-link svg { width: 17px; height: 17px; }

.theme-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  display: flex;
  align-items: center;
  gap: 5px;
}
.theme-btn:hover { background: var(--surface); color: var(--text); }

/* ── Main content ── */
.main {
  grid-column: 2;
  padding: 56px 64px 80px;
}

.main-inner { max-width: 760px; }

/* ── Section ── */
.section { margin-bottom: 52px; }

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  display: block;
}

/* ── Home hero ── */
.hero-section {
  display: flex;
  align-items: center;
  gap: 48px;
}
.hero-text { flex: 1; min-width: 0; }
.hero-photo {
  width: 176px;
  height: 176px;
  flex-shrink: 0;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.hero-name {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 6px;
}
.hero-name .hi { font-weight: 300; color: var(--text-2); }
.hero-name .name { color: var(--accent); }

.hero-pos {
  font-size: 16px;
  color: var(--text-2);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 20px;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-social { display: flex; gap: 14px; align-items: center; }

/* ── Section h2 (template-style large header) ── */
.section-h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin-bottom: 48px;
}

/* ── Research area cards ── */
.area-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.area-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color 0.15s;
}
.area-card:hover { border-color: var(--accent); }

.area-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}
.area-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}

/* ── Home page template-style cards ── */
.area-grid-home {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.area-card-home {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.area-card-home h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.area-card-home p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.65;
}

.home-pub-list { display: flex; flex-direction: column; gap: 12px; }

.home-pub-card {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.home-pub-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 5px;
}
.home-pub-meta {
  font-size: 14px;
  color: var(--text-2);
}

/* ── Funders ── */
.funder-row { display: flex; flex-wrap: wrap; gap: 8px; }
.funder {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--accent-light);
  color: var(--accent);
}

/* ── Recent news snippet (home) ── */
.news-snippet {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  align-items: start;
}
.ns-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  padding-top: 2px;
}
.ns-title { font-size: 13.5px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.ns-body { font-size: 13px; color: var(--text-2); }

/* ── Happenings ── */
.news-list { display: flex; flex-direction: column; gap: 10px; }

.news-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 24px;
  padding: 20px 22px;
  background: var(--surface-2);
  border-radius: var(--radius);
}

.news-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--text-3);
  padding-top: 3px;
  line-height: 1.4;
}
.news-title { font-size: 14.5px; font-weight: 600; color: var(--text); margin-bottom: 5px; }
.news-body { font-size: 13.5px; color: var(--text-2); line-height: 1.65; }
.news-link { display: inline-block; margin-top: 8px; font-size: 13px; color: var(--accent); font-weight: 500; }

/* ── Team ── */
.team-section-label {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  display: block;
}

.pi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 30px;
  margin-bottom: 28px;
}
.pi-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}
.pi-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.pi-edu {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.7;
}
.pi-contact { margin-top: 14px; font-size: 13.5px; color: var(--text-2); }
.pi-contact a { color: var(--accent); }

.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 12px;
}
.member-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: border-color 0.15s;
}
.member-card:hover { border-color: var(--accent); }

.member-name { font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 2px; }
.member-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 10px;
}
.member-edu { font-size: 12.5px; color: var(--text-2); line-height: 1.5; margin-bottom: 4px; }
.member-project {
  font-size: 12.5px;
  color: var(--text);
  margin-top: 8px;
  padding-left: 9px;
  border-left: 2px solid var(--accent);
}
.member-bio { font-size: 12.5px; color: var(--text-2); margin-top: 8px; line-height: 1.5; }

.alumni-list { list-style: none; }
.alumni-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}
.alumni-item:last-child { border-bottom: none; }
.alumni-name { font-weight: 600; color: var(--text); }
.alumni-detail { color: var(--text-2); font-size: 13px; }

/* ── Publications ── */
.scholar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 8px 16px;
  border-radius: 20px;
  margin-bottom: 36px;
  transition: opacity 0.15s;
}
.scholar-link:hover { opacity: 0.85; text-decoration: none; }
.scholar-link svg { width: 16px; height: 16px; }

.pub-section { margin-bottom: 36px; }
.pub-section-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  padding-left: 12px;
  border-left: 3px solid var(--accent);
  margin-bottom: 14px;
}
.pub-list { list-style: none; }
.pub-item {
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.65;
}
.pub-item:last-child { border-bottom: none; }
.pub-title { font-weight: 600; color: var(--text); display: block; margin-bottom: 3px; }
.pub-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  color: var(--accent);
  margin-right: 6px;
}
.pub-journal { font-style: italic; }

/* ── Contact ── */
.contact-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 480px;
}
.ci-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  align-items: center;
}
.ci-row:last-child { border-bottom: none; }
.ci-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}
.ci-value { color: var(--text); }
.ci-value a { color: var(--accent); }

/* ── LCA Calculator ── */
.lca-intro {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 24px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.65;
}
.lca-intro strong { color: var(--text); }

.lca-layout {
  display: grid;
  grid-template-columns: 1fr 270px;
  gap: 24px;
  align-items: start;
}

.lca-panel {
  position: sticky;
  top: 32px;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 22px;
}
.lca-total-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 4px;
}
.lca-total-val {
  font-size: 42px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 3px;
}
.lca-total-unit {
  font-size: 11.5px;
  color: var(--text-2);
  margin-bottom: 22px;
  line-height: 1.4;
}

.lca-bd-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.lca-bd-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.lca-bd-row:last-child { border-bottom: none; }
.lca-bd-name { color: var(--text-2); flex: 1; }
.lca-bd-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.lca-reset-btn {
  display: block;
  width: 100%;
  margin-top: 16px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-2);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 12.5px;
  padding: 7px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.lca-reset-btn:hover { background: var(--surface-2); color: var(--text); }

.lca-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 14px;
}
.lca-group-header {
  padding: 11px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.lca-group-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 400;
}
.lca-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
}
.lca-row:last-child { border-bottom: none; }
.lca-row-name { font-size: 13px; color: var(--text); }
.lca-row-hint { font-size: 11px; color: var(--text-3); margin-top: 1px; }
.lca-input-wrap { display: flex; align-items: center; gap: 7px; }

input[type=number].lca-input {
  width: 88px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  text-align: right;
  -moz-appearance: textfield;
  appearance: none;
}
input[type=number].lca-input::-webkit-inner-spin-button,
input[type=number].lca-input::-webkit-outer-spin-button { -webkit-appearance: none; }
input[type=number].lca-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.lca-unit-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  white-space: nowrap;
  min-width: 40px;
}

/* ── Mobile hamburger ── */
.mob-btn {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 200;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 11px;
  cursor: pointer;
  color: var(--text);
  font-size: 14px;
  line-height: 1;
}

/* ── Responsive ── */
@media (max-width: 860px) {
  .main { padding: 56px 40px 64px; }
}

@media (max-width: 720px) {
  body { display: block; }
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    z-index: 150;
  }
  .sidebar.open { transform: translateX(0); }
  .mob-btn { display: block; }
  .main { padding: 64px 20px 64px; }
  .hero-photo { display: none; }
  .lca-layout { grid-template-columns: 1fr; }
  .lca-panel { position: static; }
  .news-item { grid-template-columns: 1fr; gap: 4px; }
  .news-snippet { grid-template-columns: 1fr; gap: 4px; }
  .area-grid { grid-template-columns: 1fr 1fr; }
  .member-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .area-grid { grid-template-columns: 1fr; }
  .lca-row { grid-template-columns: 1fr; gap: 8px; }
}