/* ============================================
   Style Transfer Lab - Custom CSS
   Modern, professional styling for research showcase
   ============================================ */

/* ============================================
   Navigation Bar Styling
   ============================================ */
/* VS Code Night palette */
:root {
  --vscode-bg: #1e1e1e;
  --vscode-border: #2a2a2a;
  --vscode-fg: #d4d4d4;
  --vscode-fg-muted: #a6a6a6;
  --vscode-accent: #007acc;
}

/* Header strip (robust selectors; Alembic varies slightly by version) */
header,
.header,
.site-header,
header.header,
header.site-header {
  background: var(--vscode-bg) !important;
  border-bottom: 1px solid var(--vscode-border) !important;
}

header .container,
.header .container,
.site-header .container {
  background: transparent !important;
}

/* Center *everything* in the header: title/logo + nav */
header .container,
.header .container,
.site-header .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding-top: 14px;
  padding-bottom: 14px;
}

/* Our local header include */
.site-header__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px clamp(16px, 4vw, 40px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--vscode-fg) !important;
  text-decoration: none;
}

.site-header__emblem {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}

.site-header__title {
  font-weight: 650;
  letter-spacing: 0.2px;
}

.site-header__nav-list {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 0;
  margin: 0;
}

.site-header__nav-link {
  color: var(--vscode-fg) !important;
  text-decoration: none;
}

.site-header__nav-link:hover {
  color: var(--vscode-accent) !important;
}

/* Branding/title centering (covers common Alembic title patterns) */
header .site-title,
header .logo,
header h1,
header h2,
.site-header .site-title,
.site-header .logo,
.site-header h1,
.site-header h2 {
  text-align: center;
  margin: 0;
}

/* Nav centering (works for list-based and link-based navs) */
header nav,
.site-header nav,
.header nav {
  width: 100%;
  display: flex;
  justify-content: center;
}

header nav ul,
.site-header nav ul,
.header nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 0;
  margin: 0;
}

header nav a,
.site-header nav a,
.header nav a,
header a,
.site-header a,
.header a {
  color: var(--vscode-fg) !important;
  text-decoration: none;
}

header nav a:hover,
.site-header nav a:hover,
.header nav a:hover,
header a:hover,
.site-header a:hover,
.header a:hover {
  color: var(--vscode-accent) !important;
}

/* Active/current link hint (covers common patterns) */
header nav a[aria-current="page"],
.site-header nav a[aria-current="page"],
.header nav a[aria-current="page"],
header nav a.active,
.site-header nav a.active,
.header nav a.active {
  color: var(--vscode-accent) !important;
}

/* Footer strip */
footer,
.footer,
.site-footer,
footer.footer,
footer.site-footer {
  background: var(--vscode-bg) !important;
  border-top: 1px solid var(--vscode-border) !important;
  color: var(--vscode-fg) !important;
}

footer a,
.footer a,
.site-footer a {
  color: var(--vscode-fg) !important;
}

footer a:hover,
.footer a:hover,
.site-footer a:hover {
  color: var(--vscode-accent) !important;
}

footer .container,
.footer .container,
.site-footer .container {
  padding-top: 18px;
  padding-bottom: 18px;
  text-align: center;
}

/* Our local footer include */
.site-footer__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px clamp(16px, 4vw, 40px);
  text-align: center;
}

.site-footer__nav-list {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  padding: 0;
  margin: 0 0 10px 0;
}

.site-footer__nav-link {
  color: var(--vscode-fg) !important;
  text-decoration: none;
}

.site-footer__nav-link:hover {
  color: var(--vscode-accent) !important;
}

.site-footer__meta {
  color: var(--vscode-fg-muted);
  font-size: 0.95em;
}

.site-footer__meta-sep {
  margin: 0 8px;
}

/* ============================================
   Full-width Home Layout
   ============================================ */
main.home-fullwidth {
  width: 100%;
  max-width: none;
  padding: 0;
  margin: 0;
}

/* ============================================
   Page width (global)
   ============================================ */
.page-shell {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 0 clamp(16px, 4vw, 48px);
}

.page-shell__content {
  width: min(70vw, 980px);
}

@media (max-width: 900px) {
  .page-shell__content {
    width: 100%;
  }
}

/* ============================================
   Landing System (test.html-inspired, site-native)
   ============================================ */
body {
  background: #f5f6f8;
}

.landing-page {
  width: 100%;
}

.landing-container {
  width: min(1100px, 100%);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}

.landing-section {
  padding: clamp(36px, 5vw, 72px) 0;
}

.landing-section--muted {
  background: rgba(0, 0, 0, 0.02);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.landing-section__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.landing-section__title {
  margin: 0;
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.2;
}

.landing-section__subtitle {
  margin: 10px 0 0;
  color: var(--text-secondary);
  max-width: 78ch;
}

.landing-link {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 650;
}

.landing-link:hover {
  text-decoration: underline;
}

.landing-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.landing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.10);
  border-color: rgba(33, 150, 243, 0.35);
}

.landing-grid {
  display: grid;
  gap: 18px;
}

.landing-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.landing-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .landing-grid--2,
  .landing-grid--3 {
    grid-template-columns: 1fr;
  }
}

.landing-pillars {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 900px) {
  .landing-pillars {
    grid-template-columns: 1fr;
  }
}

/* Hero (full-bleed) */
.landing-hero {
  background: linear-gradient(135deg, #111827 0%, #0e639c 60%, #6a1b9a 125%);
  color: #ffffff;
  padding: clamp(44px, 6vw, 86px) 0;
}

.landing-hero__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
}

@media (max-width: 900px) {
  .landing-hero__grid {
    grid-template-columns: 1fr;
  }
}

.landing-hero__title {
  margin: 0 0 12px 0;
  font-size: clamp(34px, 4.5vw, 54px);
  letter-spacing: 0.2px;
  line-height: 1.1;
  color: #ffffff;
}

.landing-hero__subtitle {
  margin: 0;
  font-size: clamp(18px, 2.0vw, 22px);
  opacity: 0.92;
  max-width: 62ch;
}

.landing-hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.landing-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 650;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.landing-btn--primary {
  background: #ffffff;
  color: #0b1b2b;
}

.landing-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.landing-btn--secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

.landing-btn--secondary:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.14);
}

.landing-hero__visual img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
}

/* Home: publications cards */
.landing-publications {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

@media (max-width: 1100px) {
  .landing-publications {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .landing-publications {
    grid-template-columns: 1fr;
  }
}

.landing-publication-card {
  overflow: hidden;
}

.landing-publication-card__media {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  background: var(--neutral-lighter);
}

.landing-publication-card__body {
  padding: 16px 16px 18px;
}

.landing-publication-card__title {
  margin: 0 0 8px 0;
  font-size: 1.05em;
  line-height: 1.3;
}

.landing-publication-card__title a {
  color: var(--text-primary);
  text-decoration: none;
}

.landing-publication-card__title a:hover {
  color: var(--primary-blue);
  text-decoration: underline;
}

.landing-publication-card__meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  color: var(--text-secondary);
  font-size: 0.95em;
  margin-bottom: 8px;
}

.landing-publication-card__authors {
  margin: 0 0 10px 0;
  color: var(--text-secondary);
  font-size: 0.95em;
}

.landing-publication-card__abstract {
  margin: 0;
  color: var(--neutral-medium);
  font-size: 0.95em;
  line-height: 1.6;
}

.landing-publication-card__links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.92em;
}

.landing-publication-card__links a {
  color: var(--neutral-dark);
  text-decoration: none;
}

.landing-publication-card__links a:hover {
  color: var(--primary-blue);
  text-decoration: underline;
}

/* Contact */
.landing-contact {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

@media (max-width: 900px) {
  .landing-contact {
    grid-template-columns: 1fr;
  }
}

.landing-card__pad {
  padding: 18px;
}

.landing-form label {
  display: block;
  font-weight: 650;
  margin: 0 0 6px;
}

.landing-form input,
.landing-form textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  font-size: 1em;
  box-sizing: border-box;
}

.landing-form input:focus,
.landing-form textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.landing-form__row {
  margin-bottom: 12px;
}

.landing-form__submit {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--primary-blue);
  color: var(--white);
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.landing-form__submit:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* Blog list (minimal styling) */
.page-header {
  margin: 20px 0 30px;
}

.page-title {
  margin: 0;
}

.blog-list {
  display: grid;
  gap: 18px;
}

.blog-list-item {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.blog-list-title {
  margin: 0 0 6px 0;
  font-size: 1.25em;
}

.blog-list-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.blog-list-title a:hover {
  color: var(--primary-blue);
  text-decoration: underline;
}

.blog-list-meta {
  margin: 0 0 10px 0;
  color: var(--text-secondary);
  font-size: 0.95em;
}

.blog-list-excerpt {
  margin: 0;
  color: var(--neutral-medium);
  line-height: 1.6;
}

/* ============================================
   Color Scheme & Variables
   ============================================ */
:root {
  /* Primary Colors */
  --primary-blue: #2196F3;
  --primary-dark: #1976D2;
  --primary-light: #BBDEFB;
  
  /* Accent Colors */
  --accent-purple: #9C27B0;
  --accent-purple-dark: #7B1FA2;
  --accent-purple-light: #E1BEE7;
  
  /* Neutral Colors */
  --neutral-dark: #212121;
  --neutral-medium: #757575;
  --neutral-light: #BDBDBD;
  --neutral-lighter: #F5F5F5;
  --white: #FFFFFF;
  
  /* Semantic Colors */
  --text-primary: #212121;
  --text-secondary: #757575;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F5F5F5;
  --border-color: #E0E0E0;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.2);
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  
  /* Typography */
  --font-size-base: 18px;
  --font-size-sm: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
  --font-size-xxxl: 48px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   Global Typography Enhancements
   ============================================ */
body {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--text-primary);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

h1 { font-size: var(--font-size-xxxl); }
h2 { font-size: var(--font-size-xxl); }
h3 { font-size: var(--font-size-xl); }

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
  color: var(--white);
  padding: var(--spacing-xxl) var(--spacing-md);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  border-radius: 12px;
}

.hero-section h1 {
  font-size: var(--font-size-xxxl);
  margin-bottom: var(--spacing-sm);
  font-weight: 800;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-section .tagline {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
}

.hero-section .stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.hero-section .stat-item {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 8px;
  font-size: var(--font-size-sm);
}

.hero-section .cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
  padding: 14px 32px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: all var(--transition-normal);
  display: inline-block;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--white);
  color: var(--primary-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--white);
  color: var(--primary-blue);
}

/* ============================================
   Paper Cards
   ============================================ */
.papers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.paper-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.paper-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--neutral-lighter);
}

.paper-card-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.paper-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: 0 0 var(--spacing-xs) 0;
  color: var(--text-primary);
  line-height: 1.3;
}

.paper-card-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.paper-card-title a:hover {
  color: var(--primary-blue);
}

.paper-card-authors {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.paper-card-meta {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.paper-card-abstract {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: auto;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   Venue Badges
   ============================================ */
.venue-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.venue-badge.conference {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
  color: var(--white);
}

.venue-badge.workshop {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-purple-dark));
  color: var(--white);
}

.venue-badge.cvpr { background: #E53935; color: var(--white); }
.venue-badge.icml { background: #43A047; color: var(--white); }
.venue-badge.aaai { background: #FB8C00; color: var(--white); }
.venue-badge.neurips { background: #5E35B1; color: var(--white); }

.year-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  background: var(--neutral-lighter);
  color: var(--text-secondary);
}

/* ============================================
   Tags
   ============================================ */
.tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin: var(--spacing-sm) 0;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: scale(1.05);
}

/* ============================================
   Resource Links Section
   ============================================ */
.resource-links {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: 12px;
  margin: var(--spacing-lg) 0;
}

.resource-links h3 {
  margin-top: 0;
  color: var(--text-primary);
  font-size: var(--font-size-xl);
}

.resource-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
}

.resource-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 12px 16px;
  background: var(--white);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.resource-link:hover {
  border-color: var(--primary-blue);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.resource-link-icon {
  font-size: 20px;
  color: var(--primary-blue);
}

/* ============================================
   BibTeX Citation
   ============================================ */
.bibtex-section {
  margin: var(--spacing-lg) 0;
}

.bibtex-section h3 {
  margin-bottom: var(--spacing-sm);
}

.bibtex-container {
  position: relative;
}

.bibtex-code {
  background: var(--neutral-dark);
  color: #A9B7C6;
  padding: var(--spacing-md);
  border-radius: 8px;
  font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.5;
  overflow-x: auto;
  position: relative;
}

.copy-bibtex-btn {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: 8px 16px;
  background: var(--primary-blue);
  color: var(--white);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.copy-bibtex-btn:hover {
  background: var(--primary-dark);
}

.copy-bibtex-btn:active {
  transform: scale(0.95);
}

.copy-bibtex-btn.copied {
  background: #43A047;
}

/* ============================================
   Key Contributions
   ============================================ */
.key-contributions {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-purple-light) 100%);
  padding: var(--spacing-lg);
  border-radius: 12px;
  margin: var(--spacing-lg) 0;
}

.key-contributions h3 {
  margin-top: 0;
  color: var(--primary-dark);
}

.key-contributions ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.key-contributions li {
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  position: relative;
  line-height: 1.6;
}

.key-contributions li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-purple);
  font-weight: 700;
  font-size: 18px;
}

/* ============================================
   Related Papers
   ============================================ */
.related-papers {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: 12px;
}

.related-papers h3 {
  margin-top: 0;
}

.related-papers-list {
  display: grid;
  gap: var(--spacing-sm);
}

.related-paper-item {
  background: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 8px;
  border-left: 4px solid var(--primary-blue);
  transition: all var(--transition-fast);
}

.related-paper-item:hover {
  border-left-color: var(--accent-purple);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.related-paper-item a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
}

/* ============================================
   Image Gallery
   ============================================ */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.gallery-item:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

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

.gallery-item-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--white);
  padding: var(--spacing-sm);
  font-size: var(--font-size-sm);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-item-caption {
  transform: translateY(0);
}

/* ============================================
   Team Section
   ============================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.team-member {
  background: var(--white);
  border-radius: 12px;
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.team-member:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.team-member-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--primary-light);
}

.team-member-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.team-member-role {
  font-size: var(--font-size-base);
  color: var(--primary-blue);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.team-member-bio {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.team-member-interests {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.team-member-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.team-member-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  text-decoration: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.team-member-link:hover {
  background: var(--primary-blue);
  color: var(--white);
}

/* ============================================
   Research Themes
   ============================================ */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.theme-card {
  background: var(--white);
  border-radius: 12px;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border-top: 4px solid var(--primary-blue);
}

.theme-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-top-color: var(--accent-purple);
}

.theme-card-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-sm);
}

.theme-card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.theme-card-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.theme-card-link {
  display: inline-block;
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.theme-card-link:hover {
  color: var(--accent-purple);
  transform: translateX(4px);
}

/* ============================================
   Filtering & Search
   ============================================ */
.filter-section {
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: 12px;
  margin-bottom: var(--spacing-lg);
}

.filter-controls {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 250px;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.search-box:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.filter-buttons {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  background: var(--white);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.filter-btn.active {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
}

/* ============================================
   Papers: Quick Access (compact + scrollable)
   ============================================ */
.quick-access-panel {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.quick-access-panel__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.quick-access-panel__title {
  margin: 0;
  font-size: 1.05em;
  color: var(--text-primary);
}

.quick-access-panel__hint {
  color: var(--text-secondary);
  font-size: 0.9em;
}

.quick-access-panel__list {
  max-height: 280px;
  overflow: auto;
  padding-right: 6px; /* keep text away from scrollbar */
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.quick-access-item {
  padding: 10px 12px;
  background: #f8f9fa;
  border-radius: 10px;
  border-left: 3px solid var(--primary-blue);
}

.quick-access-item__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 6px;
}

.quick-access-item__title {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
}

.quick-access-item__title:hover {
  text-decoration: underline;
}

.quick-access-item__meta {
  color: var(--text-secondary);
  font-size: 0.9em;
}

.quick-access-item__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.85em;
}

.quick-access-item__links a {
  color: var(--neutral-dark);
  text-decoration: none;
  opacity: 0.9;
}

.quick-access-item__links a:hover {
  color: var(--primary-blue);
  opacity: 1;
}

/* ============================================
   Statistics Banner
   ============================================ */
.stats-banner {
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
  color: var(--white);
  padding: var(--spacing-lg);
  border-radius: 12px;
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.stats-banner h2 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: var(--font-size-xxl);
}

.stats-items {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-xxxl);
  font-weight: 800;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
  :root {
    --font-size-xxxl: 36px;
    --font-size-xxl: 28px;
    --font-size-xl: 22px;
    --spacing-xl: 32px;
    --spacing-xxl: 40px;
  }
  
  .hero-section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  
  .hero-section h1 {
    font-size: var(--font-size-xxl);
  }
  
  .hero-section .tagline {
    font-size: var(--font-size-base);
  }
  
  .papers-grid {
    grid-template-columns: 1fr;
  }
  
  .themes-grid {
    grid-template-columns: 1fr;
  }
  
  .team-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-box {
    width: 100%;
  }
  
  .stats-items {
    gap: var(--spacing-md);
  }
  
  .resource-links-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .papers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .themes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-primary { color: var(--primary-blue); }
.text-accent { color: var(--accent-purple); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mt-xl { margin-top: var(--spacing-xl); }

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .hero-section,
  .filter-section,
  .cta-buttons {
    display: none;
  }
  
  .paper-card,
  .team-member {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--border-color);
  }
}