/* ==========================================================================
   IMB Official Website - Institute of Molecular Biology (IMB)
   Modern Scientific Styling & Responsive Design
   ========================================================================== */

:root {
  --bg-primary: #0A0E17;
  --bg-secondary: #0F1626;
  --bg-card: #151F32;
  --bg-card-hover: #1C2A44;
  --bg-accent-subtle: rgba(16, 185, 129, 0.08);
  
  --text-primary: #F3F4F6;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  
  --brand-green: #10B981;
  --brand-cyan: #06B6D4;
  --brand-blue: #3B82F6;
  --brand-gold: #F59E0B;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(16, 185, 129, 0.35);
  
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.7);
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: #FFFFFF;
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.text-gradient {
  background: linear-gradient(135deg, var(--brand-green) 0%, var(--brand-cyan) 50%, var(--brand-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-green), #059669);
  color: #FFFFFF;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--brand-green);
  color: var(--brand-green);
  background: var(--bg-accent-subtle);
}

.btn-outline.light-border {
  border-color: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

.btn-outline.light-border:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* Badges */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  color: var(--brand-green);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--brand-green);
  box-shadow: 0 0 10px var(--brand-green);
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-img {
  width: 44px;
  height: auto;
  border-radius: 6px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #FFFFFF;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.3rem 0;
}

.nav-link:hover {
  color: #FFFFFF;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--brand-green);
  transition: var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 6rem 0 4rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-bg-glow {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.18) 0%, rgba(6, 182, 212, 0.12) 40%, rgba(10, 14, 23, 0) 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  letter-spacing: -0.02em;
  margin: 1.5rem 0 1.25rem;
  line-height: 1.2;
}

.hero-desc {
  font-size: 1.15rem;
  max-width: 780px;
  margin: 0 auto 2.2rem;
  line-height: 1.7;
  color: #D1D5DB;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  text-align: left;
}

.metric-card {
  background: rgba(21, 31, 50, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  transition: var(--transition);
}

.metric-card:hover {
  border-color: var(--border-active);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.metric-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 0.25rem;
}

.metric-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

/* Sections */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-green);
  margin-bottom: 0.6rem;
}

.section-tag.light {
  color: var(--brand-cyan);
}

.section-title {
  font-size: 2.2rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.8rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.about-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  font-size: 2.4rem;
  margin-bottom: 1.2rem;
}

.about-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.about-card p {
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Research Showcases */
.research-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2.5rem;
  transition: var(--transition);
}

.research-showcase:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-md);
}

.research-showcase.reverse {
  grid-template-columns: 1fr 1fr;
}

.pillar-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand-cyan);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
}

.research-text h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.research-text p {
  font-size: 0.95rem;
  margin-bottom: 1.2rem;
}

.code-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  margin-bottom: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #34D399;
}

.feature-list {
  list-style: none;
  margin-bottom: 1.5rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.6rem;
  font-size: 0.9rem;
  color: #D1D5DB;
}

.feature-list li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: var(--brand-green);
  font-size: 0.85rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--brand-cyan);
  font-weight: 600;
  font-size: 0.9rem;
}

.link-arrow:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

/* Media Frames */
.media-frame {
  position: relative;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: var(--transition);
}

.media-frame:hover {
  border-color: var(--brand-green);
}

.media-frame img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}

.media-frame:hover img {
  transform: scale(1.03);
}

.media-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 23, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  color: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 600;
}

.media-frame:hover .media-overlay {
  opacity: 1;
}

.media-subframe {
  margin-top: 1rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.media-subframe:hover {
  border-color: var(--brand-cyan);
}

.media-subframe img {
  width: 100%;
  height: auto;
  display: block;
}

.media-caption {
  padding: 0.5rem 0.8rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-align: center;
}

.media-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.gallery-item {
  position: relative;
  background: #000;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.gallery-item:hover {
  border-color: var(--brand-cyan);
  transform: translateY(-2px);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
}

.gallery-item span {
  display: block;
  padding: 0.4rem 0.8rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: var(--bg-card);
}

/* Symposium & Awards */
.symposium-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
}

.highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.symposium-card:hover {
  border-color: var(--brand-cyan);
}

.award-card {
  border-color: rgba(245, 158, 11, 0.3);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.05) 0%, var(--bg-card) 60%);
}

.award-card:hover {
  border-color: var(--brand-gold);
}

.card-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.15);
  color: var(--brand-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  margin-bottom: 1.2rem;
}

.card-badge.gold {
  background: rgba(245, 158, 11, 0.15);
  color: var(--brand-gold);
  border-color: rgba(245, 158, 11, 0.4);
}

.highlight-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.8rem;
  line-height: 1.35;
}

.symposium-meta {
  font-size: 0.85rem;
  color: #D1D5DB;
  margin-bottom: 1.2rem;
  line-height: 1.5;
}

.card-bullets {
  list-style: none;
  margin: 1rem 0 1.5rem;
}

.card-bullets li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: #D1D5DB;
}

.card-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--brand-gold);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 1rem;
}

.pill-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.pill-tag.gold-tag {
  background: rgba(245, 158, 11, 0.1);
  color: #FDE68A;
}

/* Data Portal */
.data-portal {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.data-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}

.data-text h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.data-text p {
  font-size: 1rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.portal-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.data-tree {
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.6);
}

.tree-header {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.4rem;
}

.tree-content {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: #E5E7EB;
  overflow-x: auto;
}

.tree-comment {
  color: #6B7280;
}

/* Publications */
.pubs-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 960px;
  margin: 0 auto;
}

.pub-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  transition: var(--transition);
}

.pub-card:hover {
  border-color: var(--brand-green);
  transform: translateX(4px);
}

.pub-year {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--brand-green);
  line-height: 1;
}

.pub-journal {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}

.pub-title {
  font-size: 1.2rem;
  color: #FFFFFF;
  margin-bottom: 0.4rem;
}

.pub-authors {
  font-size: 0.88rem;
  color: #D1D5DB;
  margin-bottom: 0.6rem;
}

.pub-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.8rem;
}

.pub-links {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  flex-wrap: wrap;
}

.pub-doi {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-green);
}

.pub-badge {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  color: #D1D5DB;
}

/* Footer */
.footer {
  background: #06090E;
  border-top: 1px solid var(--border-subtle);
  padding-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 3rem;
  padding-bottom: 3rem;
}

.brand-col .footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.brand-col .footer-logo img {
  width: 36px;
  height: auto;
}

.brand-col .footer-logo span {
  font-size: 1.2rem;
  font-weight: 800;
  color: #FFFFFF;
}

.footer-text {
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 1.2rem;
  color: var(--text-secondary);
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1.2rem;
  color: #FFFFFF;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--brand-green);
}

.contact-line {
  font-size: 0.88rem;
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
}

.contact-line strong {
  color: #FFFFFF;
}

.contact-line a {
  color: var(--brand-cyan);
}

.contact-line a:hover {
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1.5rem 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Lightbox Modal */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-dialog {
  position: relative;
  max-width: 95vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.lightbox-caption {
  margin-top: 1rem;
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: #FFFFFF;
  font-size: 2.2rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.lightbox-close:hover {
  color: var(--brand-green);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.4rem;
  }
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  .research-showcase, .research-showcase.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .data-banner {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 4rem 0 3rem;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.2rem;
    display: none;
  }
  .nav-menu.open {
    display: flex;
  }
  .menu-toggle {
    display: flex;
  }
  .footer-content {
    grid-template-columns: 1fr;
  }
  .pub-card {
    grid-template-columns: 1fr;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
  }
}