/* ===========================
   Love Lab — main stylesheet
   Botanical / clean style
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@400;500;600&display=swap');

:root {
  --green-dark:  #1b4332;
  --green:       #2d6a4f;
  --green-mid:   #40916c;
  --green-light: #74c69d;
  --green-pale:  #d8f3dc;
  --green-wash:  #f0faf3;
  --text:        #1a1a1a;
  --text-muted:  #5a6672;
  --border:      #e2e8e4;
  --bg:          #ffffff;
  --max-width:   960px;
  --font-serif:  'Lora', Georgia, serif;
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 1rem;
}

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* ── Navigation ── */
nav {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--green-dark);
  letter-spacing: 0.01em;
}
.nav-brand:hover { text-decoration: none; color: var(--green); }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--green); text-decoration: none; }
.nav-links a.active { color: var(--green); }

/* ── Hero (home page) — full-width photo + overlay ── */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background-color: var(--green-dark);
  background-image:
    linear-gradient(to right, rgba(27,67,50,0.82) 40%, rgba(27,67,50,0.45) 100%),
    var(--hero-bg, none);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 2rem;
  display: flex;
  gap: 3rem;
  align-items: center;
  width: 100%;
}
.hero-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 4px solid rgba(255,255,255,0.3);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.hero-text h1 {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
  line-height: 1.2;
}
.hero-text .subtitle {
  color: var(--green-light);
  font-size: 1rem;
  margin-bottom: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.hero-text p {
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  max-width: 560px;
  line-height: 1.7;
}
.hero-cta {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.65rem 1.6rem;
  background: var(--green-light);
  color: var(--green-dark);
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.9rem;
}
.hero-cta:hover { background: #fff; text-decoration: none; color: var(--green-dark); }

/* ── Page wrapper ── */
.page { max-width: var(--max-width); margin: 0 auto; padding: 3.5rem 2rem; }

/* ── Section headings ── */
h1 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--green-dark);
}
h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--green-dark);
  margin: 3rem 0 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--green-pale);
}
h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.4rem;
  color: var(--text);
}
p { margin-bottom: 1rem; }
hr { border: none; border-top: 1px solid var(--border); margin: 2.5rem 0; }

/* ── Home page — research highlight cards ── */
.highlights {
  background: var(--green-wash);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.highlights-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
}
.highlights-inner h2 {
  font-family: var(--font-serif);
  color: var(--green-dark);
  font-size: 1.3rem;
  border: none;
  margin: 0 0 1.5rem;
  text-align: center;
  letter-spacing: 0.01em;
}
.highlight-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}
.highlight-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  border-top: 3px solid var(--green-mid);
  transition: box-shadow 0.2s, transform 0.2s;
}
.highlight-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); transform: translateY(-2px); }
.highlight-card h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--green-dark);
  margin: 0 0 0.6rem;
}
.highlight-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

/* ── Home page — news section ── */
.home-content { max-width: var(--max-width); margin: 0 auto; padding: 3rem 2rem; }
.news-list { list-style: none; padding: 0; }
.news-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
  display: flex;
  gap: 1rem;
}
.news-list li:last-child { border-bottom: none; }
.news-date { color: var(--text-muted); font-size: 0.85rem; white-space: nowrap; padding-top: 0.1rem; }

/* ── Research page — section bands ── */
.research-band {
  padding: 3rem 2rem;
  border-bottom: 1px solid var(--border);
}
.research-band:nth-child(even) { background: var(--green-wash); }
.research-band-inner { max-width: var(--max-width); margin: 0 auto; }
.research-band h2 {
  border-bottom: 2px solid var(--green-pale);
  margin-top: 0;
}
.research-band p { color: var(--text-muted); }

/* ── Publication lists ── */
.pub-list { list-style: none; padding: 0; margin-top: 1rem; }
.pub-list li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 0.5rem 0 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
  border-left: 3px solid var(--green-pale);
  margin-bottom: 0.4rem;
}
.pub-list li:last-child { border-bottom: none; }
.pub-list a { color: var(--green); }

/* ── Publications page ── */
.pub-entry {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
}
.pub-entry:last-child { border-bottom: none; }
.pub-entry .pub-journal { font-style: italic; }
.pub-entry .pub-doi { font-size: 0.84rem; display: block; margin-top: 0.2rem; }
.pub-entry .pub-authors em { font-style: normal; font-weight: 600; color: var(--green-dark); }

/* ── Members page ── */
.members-group { margin-bottom: 3rem; }
.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1.75rem;
  margin-top: 1.25rem;
}
.member-card {
  text-align: center;
  padding: 1.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: white;
  transition: box-shadow 0.2s, transform 0.2s;
}
.member-card:hover { box-shadow: 0 4px 18px rgba(0,0,0,0.08); transform: translateY(-2px); }
.member-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1rem;
  border: 3px solid var(--green-pale);
}
.member-card .member-name { font-family: var(--font-serif); font-weight: 600; font-size: 1rem; color: var(--green-dark); }
.member-card .member-degree { font-size: 0.83rem; color: var(--text-muted); margin-top: 0.2rem; }
.member-card .member-research { font-size: 0.81rem; color: var(--text-muted); margin-top: 0.5rem; font-style: italic; line-height: 1.5; }

/* ── CV page ── */
.cv-section { margin-bottom: 2.5rem; }
.cv-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
}
.cv-row:last-child { border-bottom: none; }
.cv-year { color: var(--text-muted); font-size: 0.86rem; padding-top: 0.1rem; }
.cv-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.65rem 1.5rem;
  background: var(--green);
  color: white;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s;
}
.cv-download:hover { background: var(--green-dark); text-decoration: none; color: white; }

/* ── Page intro band ── */
.page-hero {
  background: var(--green-dark);
  padding: 3rem 2rem;
}
.page-hero-inner { max-width: var(--max-width); margin: 0 auto; }
.page-hero h1 {
  font-family: var(--font-serif);
  color: white;
  margin: 0 0 0.5rem;
  font-size: 2.2rem;
}
.page-hero p { color: rgba(255,255,255,0.75); max-width: 640px; margin: 0; }

/* ── Footer ── */
footer {
  background: var(--green-dark);
  text-align: center;
  padding: 2.5rem 2rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-top: 0;
}
footer a { color: var(--green-light); }
footer a:hover { color: white; text-decoration: none; }

/* ── Section photo strip ── */
.section-photo {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  display: block;
}
.section-photo-side {
  float: right;
  width: 300px;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
  margin: 0 0 1.5rem 2rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.clearfix::after { content: ""; display: table; clear: both; }

/* ── Responsive ── */
@media (max-width: 680px) {
  .hero-inner { flex-direction: column; text-align: center; padding: 3rem 1.5rem; }
  .hero-text h1 { font-size: 2rem; }
  .hero-text p { margin: 0 auto; }
  .nav-links { gap: 1.2rem; }
  .nav-links a { font-size: 0.8rem; }
  .page { padding: 2.5rem 1.25rem; }
  .cv-row { grid-template-columns: 1fr; gap: 0.2rem; }
  .highlight-cards { grid-template-columns: 1fr; }
}