/* ============================================
   HAI NGO NGOC — RESEARCH GROUP
   Theme: Deep Cosmos Observatory
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,600&family=Outfit:wght@300;400;500;600&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* --- VARIABLES --- */
:root {
  --bg: #04070E;
  --bg-2: #07111F;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(212, 168, 67, 0.35);
  --gold: #D4A843;
  --gold-light: #F0C96A;
  --teal: #6ECECE;
  --teal-dark: #3A9A9A;
  --text: #CDD3E8;
  --text-muted: #6E7A9A;
  --text-bright: #EEF1FA;
  --heading: #F5F0E8;
  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --nav-h: 68px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.75;
  overflow-x: hidden;
  min-height: 100vh;
}

/* --- STARFIELD CANVAS --- */
#starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* --- NEBULA BLOBS --- */
.nebula {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
}
.nebula-1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, #1A5FAD 0%, transparent 70%);
  top: -200px; right: -200px;
}
.nebula-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #6A2F8A 0%, transparent 70%);
  bottom: 10%; left: -150px;
}
.nebula-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #D4A843 0%, transparent 70%);
  top: 50%; right: 20%;
  opacity: 0.06;
}

/* --- CONTENT WRAPPER --- */
.page-content {
  position: relative;
  z-index: 1;
}

/* ===== NAVIGATION ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 60px;
  background: rgba(4, 7, 14, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--heading);
  text-decoration: none;
}
.nav-logo span {
  color: var(--gold);
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  display: block;
  padding: 6px 16px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 3px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
  background: rgba(212, 168, 67, 0.08);
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: rgba(7, 17, 31, 0.97);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 200px;
  padding: 6px 0;
  backdrop-filter: blur(20px);
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: block;
  padding: 8px 18px;
  font-size: 0.78rem;
  border-radius: 0;
  color: var(--text);
}
.nav-dropdown-menu a:hover { color: var(--gold); background: rgba(212,168,67,0.07); }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.1rem;
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 60px) 60px 80px;
  position: relative;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 80px;
  align-items: center;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-label::before {
  content: '';
  display: block;
  width: 30px;
  height: 1px;
  background: var(--gold);
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--heading);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.hero-name strong {
  font-weight: 600;
  color: var(--text-bright);
}
.hero-name .surname {
  color: var(--gold);
  font-style: italic;
}

.hero-title {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.6;
  max-width: 480px;
}
.hero-title em {
  color: var(--teal);
  font-style: normal;
}

.hero-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin-bottom: 28px;
}

.hero-quote {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.hero-socials {
  display: flex;
  gap: 14px;
}
.hero-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.hero-socials a:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(212,168,67,0.06);
}

/* Hero image */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-photo-wrap {
  position: relative;
  width: 300px;
  height: 380px;
}
.hero-photo-wrap::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--gold), transparent 50%, var(--teal));
  border-radius: 12px;
  z-index: 0;
}
.hero-photo-wrap img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 11px;
  filter: grayscale(20%) contrast(1.05);
}
.hero-photo-badge {
  position: absolute;
  bottom: -18px;
  left: -18px;
  background: var(--bg-2);
  border: 1px solid var(--border-accent);
  border-radius: 8px;
  padding: 12px 18px;
  z-index: 2;
}
.hero-photo-badge .badge-role {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 2px;
}
.hero-photo-badge .badge-inst {
  font-size: 0.75rem;
  color: var(--text);
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}
.scroll-hint::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
}
@keyframes scrollBounce {
  0%, 100% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.8; transform: translateX(-50%) translateY(8px); }
}

/* ===== SECTION COMMONS ===== */
section {
  padding: 100px 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-tag::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--heading);
  line-height: 1.1;
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.8;
}

/* ===== INTERESTS SECTION ===== */
.interests {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 60px;
}

.interest-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px;
  transition: border-color 0.3s, background 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}
.interest-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.interest-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
}
.interest-card:hover::before { opacity: 1; }

.interest-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
  display: block;
}
.interest-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--heading);
  margin-bottom: 14px;
}
.interest-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.85;
}

/* ===== RESEARCH SECTION ===== */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.research-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}
.research-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
}

.research-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  filter: brightness(0.7) saturate(0.8);
  transition: filter 0.3s;
}
.research-card:hover .research-card-img {
  filter: brightness(0.85) saturate(1);
}

.research-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.research-card-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 10px;
}
.research-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--heading);
  margin-bottom: 12px;
  line-height: 1.3;
}
.research-card p {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.8;
  flex: 1;
}
.research-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  transition: gap 0.2s;
}
.research-card-link:hover { gap: 10px; }

/* ===== FACILITIES SECTION ===== */
.facilities-wrap {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 100px 60px;
}

.facilities-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.facilities-desc {
  max-width: 640px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-top: 20px;
  margin-bottom: 48px;
}

.facilities-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.facility-item {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 1;
  position: relative;
  cursor: pointer;
}
.facility-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.65) saturate(0.7);
  transition: all 0.4s;
}
.facility-item:hover img {
  filter: brightness(0.9) saturate(1.1);
  transform: scale(1.05);
}
.facility-item .facility-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, rgba(4,7,14,0.9), transparent);
  padding: 16px 12px 10px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-light);
  opacity: 0;
  transition: opacity 0.3s;
}
.facility-item:hover .facility-label { opacity: 1; }

/* ===== PUBLICATIONS PREVIEW ===== */
.pubs-preview {
  margin-top: 56px;
}
.pub-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
  transition: transform 0.2s;
}
.pub-item:hover { transform: translateX(6px); }

.pub-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold);
  padding-top: 3px;
  text-align: right;
}
.pub-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--heading);
  margin-bottom: 6px;
  line-height: 1.4;
}
.pub-authors {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.pub-authors strong { color: var(--teal); font-weight: 500; }

.pub-meta {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}
.pub-journal {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  font-style: italic;
}
.pub-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  background: rgba(212,168,67,0.1);
  color: var(--gold);
  border: 1px solid rgba(212,168,67,0.25);
}
.pub-badge.prep {
  background: rgba(110,206,206,0.08);
  color: var(--teal);
  border-color: rgba(110,206,206,0.2);
}
.pub-doi {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.pub-doi:hover { color: var(--gold); }

/* ===== CV PAGE ===== */
.cv-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  margin-top: 60px;
}

.cv-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 30px);
  height: fit-content;
}

.cv-photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 10px;
  filter: grayscale(20%);
  margin-bottom: 28px;
  border: 1px solid var(--border);
}

.cv-contact {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 20px;
}
.cv-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.82rem;
}
.cv-contact-item:last-child { margin-bottom: 0; }
.cv-contact-icon { color: var(--gold); min-width: 16px; margin-top: 2px; }
.cv-contact-text { color: var(--text-muted); word-break: break-all; }

.cv-skills { padding: 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; }
.cv-skill-list { list-style: none; margin-top: 12px; }
.cv-skill-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 5px 0;
}
.cv-skill-list li::before {
  content: '◆';
  color: var(--gold);
  font-size: 0.45rem;
}

.cv-section {
  margin-bottom: 56px;
}
.cv-section-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--heading);
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.cv-section-title::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 50px; height: 1px;
  background: var(--gold);
}

.cv-entry {
  margin-bottom: 32px;
  padding-left: 20px;
  border-left: 1px solid var(--border);
  position: relative;
}
.cv-entry::before {
  content: '';
  position: absolute;
  left: -4px; top: 6px;
  width: 7px; height: 7px;
  background: var(--gold);
  border-radius: 50%;
}
.cv-entry-year {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 4px;
}
.cv-entry-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--heading);
  margin-bottom: 2px;
}
.cv-entry-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.cv-entry-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.cv-entry-instrument {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--teal);
  background: rgba(110,206,206,0.08);
  border: 1px solid rgba(110,206,206,0.2);
  border-radius: 3px;
  padding: 2px 8px;
  margin-bottom: 8px;
}

.cv-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(212,168,67,0.05));
  border: 1px solid var(--border-accent);
  border-radius: 6px;
  color: var(--gold);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  margin-top: 20px;
  transition: all 0.2s;
  cursor: pointer;
}
.cv-download-btn:hover {
  background: rgba(212,168,67,0.15);
  transform: translateY(-2px);
}

/* ===== TEAM PAGE ===== */
.team-intro {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}
.team-intro .section-tag { justify-content: center; }
.team-intro .section-tag::before { display: none; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 64px;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
  text-align: center;
}
.team-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
}

.team-card-photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: top;
  filter: grayscale(30%) brightness(0.9);
  transition: filter 0.3s;
}
.team-card:hover .team-card-photo {
  filter: grayscale(0%) brightness(1);
}

.team-card-body { padding: 20px 18px 24px; }

.team-card-role {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}
.team-card-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--heading);
  margin-bottom: 4px;
}
.team-card-affil {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Supervisor badge */
.team-card.supervisor {
  border-color: rgba(212,168,67,0.2);
}
.team-card.supervisor .team-card-role { color: var(--gold-light); }

/* ===== RESEARCH PAGE ===== */
.research-project {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 80px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.research-project:hover { border-color: var(--border-accent); }
.research-project.reverse { direction: rtl; }
.research-project.reverse > * { direction: ltr; }

.research-project-img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  filter: brightness(0.7) saturate(0.8);
  transition: filter 0.4s;
}
.research-project:hover .research-project-img {
  filter: brightness(0.85) saturate(1);
}

.research-project-content {
  padding: 48px;
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.research-project-content h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 500;
  color: var(--heading);
  line-height: 1.25;
  margin-bottom: 20px;
}
.research-project-content p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 28px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 5px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.22s;
}
.btn-primary {
  background: var(--gold);
  color: #0A0C12;
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212,168,67,0.25);
}
.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--border-accent);
}
.btn-outline:hover {
  background: rgba(212,168,67,0.07);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  font-size: 0.75rem;
}
.btn-ghost:hover { color: var(--text-bright); border-color: rgba(255,255,255,0.15); }

/* ===== FOOTER ===== */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 50px 60px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-copy a { color: var(--gold); text-decoration: none; }

.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold); }

/* ===== FULL-WIDTH STRIP ===== */
.full-strip {
  position: relative;
  z-index: 1;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 100px 60px;
}
.full-strip-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== STATS BAR ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-top: 80px;
}
.stat-item {
  background: var(--bg);
  padding: 32px 24px;
  text-align: center;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num em { font-style: normal; font-size: 1.4rem; }
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ===== FADE IN ANIMATION ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .research-grid { grid-template-columns: 1fr 1fr; }
  .facilities-grid { grid-template-columns: repeat(3, 1fr); }
  .cv-layout { grid-template-columns: 1fr; }
  .cv-sidebar { position: static; }
  .cv-photo { width: 200px; }
  .research-project { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  nav { padding: 0 24px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(4,7,14,0.97);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
  }
  .nav-toggle { display: flex; }
  section, .facilities-wrap, .full-strip, footer { padding-left: 24px; padding-right: 24px; }
  .hero { padding-left: 24px; padding-right: 24px; }
  .interests { grid-template-columns: 1fr; }
  .research-grid { grid-template-columns: 1fr; }
  .facilities-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { flex-direction: column; text-align: center; }
}