/* ========================================
   HERO Lab Website - Styles
   ======================================== */

:root {
  --color-primary: #1a7a8a;
  --color-primary-dark: #125e6b;
  --color-primary-light: #e4f2f5;
  --color-accent: #d4a017;
  --color-accent-light: #fff8e6;
  --color-dark: #0a1628;
  --color-dark-soft: #1a2a40;
  --color-text: #2d3748;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fc;
  --color-bg-dark: #0a1628;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
}

.logo-img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.logo-text {
  color: var(--color-dark);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: var(--transition);
  border-radius: 2px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(12, 124, 158, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-dark) 0%, #0c3547 40%, var(--color-primary-dark) 100%);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(12, 124, 158, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(240, 165, 0, 0.08) 0%, transparent 50%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.08) 50%, transparent 50%),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.06) 50%, transparent 50%),
    radial-gradient(1px 1px at 50% 30%, rgba(255,255,255,0.04) 50%, transparent 50%),
    radial-gradient(1px 1px at 70% 70%, rgba(255,255,255,0.06) 50%, transparent 50%),
    radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.08) 50%, transparent 50%);
}

.hero-watermark {
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.06;
  z-index: 0;
  pointer-events: none;
}

.hero-watermark img {
  width: 500px;
  height: 500px;
  filter: brightness(0) invert(1);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50px;
  color: rgba(255,255,255,0.8);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-acronym {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.hero .btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-dark);
}

.hero .btn-primary:hover {
  background: #d4910a;
  border-color: #d4910a;
  box-shadow: 0 4px 12px rgba(240, 165, 0, 0.3);
}

.hero .btn-secondary {
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}

.hero .btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}

.hero-pillars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.pillar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.pillar-icon {
  width: 32px;
  height: 32px;
  color: var(--color-accent);
}

.pillar span {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pillar-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
  margin-bottom: 64px;
}

.about-text p {
  margin-bottom: 16px;
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.8;
}

.about-text strong {
  color: var(--color-dark);
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 500;
  margin-top: 4px;
}

.partner-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 40px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.partner {
  text-align: center;
}

.partner-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: 0.02em;
}

.partner-dept {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

.partner-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

/* ========================================
   Research / Study Section
   ======================================== */
.study-featured {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  position: relative;
  overflow: hidden;
  margin-bottom: 64px;
}

.study-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-accent-light);
  color: #b38600;
}

.study-badge-completed {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.study-badge, .study-badge-completed {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 50px;
  margin-bottom: 24px;
}

.study-featured-content {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
}

.study-featured-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.study-id {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.study-featured-text > p {
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 24px;
}

.study-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.study-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.detail-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
}

.detail-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-dark);
}

.study-outcomes h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
  margin-top: 16px;
}

.study-outcomes ul {
  padding-left: 20px;
  list-style: disc;
}

.study-outcomes li {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.5;
}

.study-featured-text .btn {
  margin-top: 24px;
}

/* Study visual card */
.study-visual-card {
  background: var(--color-dark);
  border-radius: var(--radius-md);
  padding: 32px;
  color: #fff;
}

.visual-header {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 28px;
}

.visual-timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: 2px solid rgba(255,255,255,0.3);
  flex-shrink: 0;
  margin-top: 4px;
}

.timeline-dot.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 0 12px rgba(240, 165, 0, 0.4);
}

.timeline-content strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.timeline-content span {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
}

.visual-metrics {
  display: flex;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.metric {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
}

.metric svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
}

/* ========================================
   Research Areas
   ======================================== */
.research-areas-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: 32px;
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.area-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all var(--transition);
}

.area-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.area-icon {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.area-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.area-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========================================
   Team Section
   ======================================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.team-avatar {
  margin-bottom: 20px;
}

.avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto;
  letter-spacing: 0.02em;
}

.team-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.team-role {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.team-affiliation {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 500;
  margin-bottom: 4px;
}

.team-title {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.team-bio {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.7;
  text-align: left;
}

.team-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.team-links a {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

.team-links a:hover {
  color: var(--color-primary-dark);
}

/* ========================================
   Publications
   ======================================== */
.publications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.pub-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all var(--transition);
}

.pub-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pub-type {
  display: inline-block;
  padding: 3px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 4px;
  margin-bottom: 12px;
}

.pub-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}

.pub-venue {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 12px;
}

.pub-description {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.pub-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

.pub-link:hover {
  color: var(--color-primary-dark);
}

/* Social CTA */
.social-cta {
  text-align: center;
  padding: 48px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.social-cta h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.social-cta > p {
  color: var(--color-text-light);
  margin-bottom: 32px;
}

.instagram-feed {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
  justify-items: center;
}

.instagram-feed .instagram-media {
  margin: 0 !important;
  min-width: 0 !important;
  width: 100% !important;
  max-width: 100% !important;
}

@media (max-width: 1024px) {
  .instagram-feed {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .instagram-feed {
    grid-template-columns: 1fr;
  }
}

.social-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
}

.social-btn svg {
  width: 20px;
  height: 20px;
}

.social-btn.instagram {
  background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  color: #fff;
}

.social-btn.instagram:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(220, 39, 67, 0.3);
}

.social-btn.linkedin {
  background: #0077b5;
  color: #fff;
}

.social-btn.linkedin:hover {
  background: #005e93;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 119, 181, 0.3);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.contact-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 20px;
}

.location-info {
  display: flex;
  justify-content: center;
  gap: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.location h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.location p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 64px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand .logo-icon {
  color: var(--color-primary);
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.6;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.footer-disclaimer {
  margin-top: 8px;
  font-size: 0.75rem !important;
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .study-featured-content {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .areas-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: 120px 20px 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-pillars {
    gap: 24px;
  }

  .section {
    padding: 64px 0;
  }

  .team-grid,
  .publications-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .areas-grid {
    grid-template-columns: 1fr;
  }

  .study-featured {
    padding: 28px 20px;
  }

  .study-details-grid {
    grid-template-columns: 1fr;
  }

  .partner-logos {
    flex-direction: column;
    gap: 24px;
  }

  .partner-divider {
    width: 60px;
    height: 1px;
  }

  .footer-content {
    flex-direction: column;
    gap: 40px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 32px;
  }

  .location-info {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

  .social-links {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }
}