/* ── MAIN CONTENT ── */
.research-body {
  max-width: 980px;
  margin: 0 auto;
  padding: 80px 5% 100px;
}

/* Filter tabs */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 56px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--border);
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 999px;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.85rem;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--green-mid); color: var(--green-mid); }
.filter-btn.active { background: var(--green-mid); border-color: var(--green-mid); color: white; }

/* Section blocks */
.research-section { margin-bottom: 72px; }
.research-section:last-child { margin-bottom: 0; }

.section-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}
.section-heading-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.section-heading h2 {
  font-family: 'Baloo 2', cursive;
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 800;
  color: var(--text);
}
.section-count {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--text-muted);
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

/* ── PUB CARDS ── */
.pub-list { display: flex; flex-direction: column; gap: 16px; }

.pub-card {
  background: var(--bg-alt);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 28px 28px 24px;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  overflow: hidden;
}
.pub-card::before {
  content: '';
  position: absolute; top: 0; left: 0; bottom: 0;
  width: 4px;
  background: var(--pub-accent, var(--green-mid));
  border-radius: 0 2px 2px 0;
}
.pub-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.1);
  border-color: var(--pub-accent, var(--green-mid));
}

.pub-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.pub-badge {
  display: inline-block;
  font-size: 0.7rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.8px;
  padding: 3px 10px; border-radius: 999px;
  background: var(--badge-bg, rgba(46,139,64,0.12));
  color: var(--badge-color, var(--green-mid));
  border: 1px solid var(--badge-border, rgba(46,139,64,0.25));
}
.pub-year {
  font-size: 0.78rem; font-weight: 800;
  color: var(--text-muted);
}
.pub-award {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.72rem; font-weight: 800;
  color: #d4930a;
  background: rgba(245,200,66,0.12);
  border: 1px solid rgba(245,200,66,0.3);
  padding: 3px 10px; border-radius: 999px;
}

.pub-title {
  font-family: 'Baloo 2', cursive;
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.pub-authors {
  font-family: 'Lora', serif;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 8px;
  line-height: 1.5;
}

.pub-venue {
  font-size: 0.88rem; font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 14px;
  line-height: 1.5;
}

.pub-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.pub-doi {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.78rem; font-weight: 800;
  color: var(--pub-accent, var(--green-mid));
  text-decoration: none;
  padding: 5px 14px;
  border: 1.5px solid var(--pub-accent, var(--green-mid));
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}
.pub-doi:hover {
  background: var(--pub-accent, var(--green-mid));
  color: white;
}
.pub-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.78rem; font-weight: 800;
  color: var(--text-muted);
  text-decoration: none;
  padding: 5px 14px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  transition: border-color 0.2s, color 0.2s;
}
.pub-link:hover { border-color: var(--text-muted); color: var(--text); }

/* ── PRESENTATION CARDS ── */
.pres-list { display: flex; flex-direction: column; gap: 0; }

.pres-group { margin-bottom: 36px; }
.pres-group:last-child { margin-bottom: 0; }

.pres-month-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Baloo 2', cursive;
  font-size: 0.9rem; font-weight: 800;
  color: var(--green-mid);
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 14px;
  padding: 5px 0;
  border-bottom: 2px solid var(--border);
  width: 100%;
}

.pres-item {
  display: flex;
  gap: 18px;
  padding: 18px 20px;
  border-radius: 16px;
  border: 2px solid transparent;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  margin-bottom: 8px;
}
.pres-item:last-child { margin-bottom: 0; }
.pres-item:hover {
  background: var(--bg-alt);
  border-color: var(--border);
  transform: translateX(4px);
}

.pres-dot-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 5px;
  flex-shrink: 0;
}
.pres-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--pres-color, var(--green-mid));
  flex-shrink: 0;
}
.pres-line {
  width: 2px; flex: 1;
  background: var(--border);
  margin-top: 6px;
  min-height: 20px;
}
.pres-item:last-child .pres-line { display: none; }

.pres-body { flex: 1; min-width: 0; }
.pres-title {
  font-family: 'Baloo 2', cursive;
  font-size: 1rem; font-weight: 800;
  color: var(--text);
  margin-bottom: 5px;
  line-height: 1.3;
}
.pres-venue {
  font-size: 0.85rem; font-weight: 600;
  color: var(--text-muted);
  line-height: 1.5;
}
.pres-venue em {
  font-style: normal;
  color: var(--pres-color, var(--green-mid));
  font-weight: 700;
}
.pres-award-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.72rem; font-weight: 800;
  color: #d4930a;
  background: rgba(245,200,66,0.12);
  border: 1px solid rgba(245,200,66,0.3);
  padding: 2px 8px; border-radius: 999px;
  margin-top: 6px;
}

/* ── STATS ── */
.research-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 60px;
  padding: 32px;
  background: var(--bg-alt);
  border: 2px solid var(--border);
  border-radius: 24px;
}
.r-stat { text-align: center; }
.r-stat-num {
  font-family: 'Baloo 2', cursive;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--green-mid);
  line-height: 1;
  margin-bottom: 5px;
}
.r-stat-label {
  font-size: 0.78rem; font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.6px;
}

/* Animations */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Footer */
footer { background: var(--bg-alt); color: var(--text-muted); text-align: center; padding: 32px 5%; font-size: 0.875rem; font-weight: 600; border-top: 2px solid var(--border); transition: background 0.3s, color 0.3s; }
footer a { color: var(--green-light); text-decoration: none; }
footer a:hover { text-decoration: underline; }
.footer-logo { font-family: 'Baloo 2', cursive; font-size: 1.2rem; color: var(--text); font-weight: 800; margin-bottom: 8px; }

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-social { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: block; }
  .research-stats { grid-template-columns: repeat(2, 1fr); }
  .pub-card { padding: 22px 20px 18px; }
}
@media (max-width: 480px) {
  .research-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 20px; }
  .filter-bar { gap: 8px; }
  .pub-footer { gap: 8px; }
}
@media (max-width: 360px) {
  .logo-text { font-size: 1rem; }
}

body#research .page-hero h1 {
  font-weight: 800;
  letter-spacing: -0.5px;
}
body#research .page-hero {
  height: auto;
  min-height: 300px;
  padding-bottom: 80px;
}
body#research {
  background: #f6f3ea;
}

body#research .research-content {
  background: #ffffff;
  margin-top: -60px;
  padding-top: 80px;
  border-top-left-radius: 40px;
  border-top-right-radius: 40px;
}