/* Modern CSS Variables for consistent theming */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #0ea5e9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --background-primary: #ffffff;
  --background-secondary: #f8fafc;
  --background-accent: #f1f5f9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #AFEEEE 0%, #40E0D0 100%);
  --gradient-subtle: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth scrolling for better UX */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  background-color: var(--background-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


/* Modern Button Styles */
.button {
  border-radius: var(--border-radius) !important;
  font-weight: 600 !important;
  transition: var(--transition) !important;
  border: 2px solid transparent !important;
  position: relative;
  overflow: hidden;
}

.button.is-dark {
  background: var(--text-primary) !important;
  border: none !important;
  color: white !important;
  box-shadow: var(--shadow-md);
}

.button.is-dark:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--primary-color) !important;
}

.button.is-dark:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.footer .icon-link {
    font-size: 25px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer .icon-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.link-block a {
    margin: 8px 4px;
}

.button-icon-svg {
  width: 1em;
  height: 1em;
  display: block;
}

.dnerf {
  font-variant: small-caps;
}


/* Hero Section Modernization */
.hero {
  position: relative;
  overflow: hidden;
}

.hero.is-light {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.hero-cover {
  min-height: 100vh;
  background-color: #0f172a;
  color: #ffffff;
  position: relative;
}

.hero-cover-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-cover-bg-1 {
  background-image:
    linear-gradient(135deg, rgba(15, 23, 42, 0.72), rgba(30, 41, 59, 0.58)),
    url('../images/cover_forest.png');
  animation: coverFade 20s ease-in-out infinite;
}

.hero-cover-bg-2 {
  background-image:
    linear-gradient(135deg, rgba(15, 23, 42, 0.72), rgba(30, 41, 59, 0.58)),
    url('../images/cover_building.png');
  animation: coverFade 20s ease-in-out infinite;
  animation-delay: -10s;
}

@keyframes coverFade {
  0%, 45% { opacity: 1; }
  50%, 95% { opacity: 0; }
  100% { opacity: 1; }
}

.hero-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 40%, rgba(233, 69, 96, 0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 25%, rgba(56, 189, 248, 0.14) 0%, transparent 60%);
  pointer-events: none;
}

.hero-cover .hero-body {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 1.5rem;
}

.hero-cover .publication-title,
.hero-cover .publication-subtitle,
.hero-cover .publication-authors,
.hero-cover .publication-authors a,
.hero-cover .publication-authors small,
.hero-cover .author-block,
.hero-cover .eql-cntrb {
  color: #ffffff !important;
}

.hero-cover .publication-title {
  margin-bottom: 0.5rem !important;
}

.hero-cover .publication-authors.authors-primary,
.hero-cover .publication-authors.authors-primary .author-block,
.hero-cover .publication-authors.authors-primary a {
  color: #a8d4ff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.28);
}

.hero-cover .publication-authors.authors-primary a:hover {
  color: #d6ebff !important;
}

.hero-cover .publication-authors.authors-primary a::after {
  display: none;
}

.hero-cover .publication-authors.authors-affiliations,
.hero-cover .publication-authors.authors-affiliations .author-block,
.hero-cover .publication-authors.authors-affiliations .eql-cntrb {
  color: rgba(255, 255, 255, 0.74) !important;
}

.hero-cover .button.is-dark {
  background: rgba(255, 255, 255, 0.12) !important;
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.34) !important;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.24);
  backdrop-filter: blur(6px);
}

.hero-cover .button.is-dark:hover {
  background: rgba(255, 255, 255, 0.22) !important;
}

.hero-cover .button.btn-arxiv:hover,
.hero-cover .button.btn-arxiv.btn-delay-active {
  border-color: #b31b1b !important;
  box-shadow: 0 0 0 2px rgba(179, 27, 27, 0.35), 0 8px 24px rgba(15, 23, 42, 0.24) !important;
}

.hero-cover .button.btn-code:hover,
.hero-cover .button.btn-code.btn-delay-active {
  border-color: #24292e !important;
  box-shadow: 0 0 0 2px rgba(36, 41, 46, 0.35), 0 8px 24px rgba(15, 23, 42, 0.24) !important;
}

.hero-cover .button.btn-video:hover,
.hero-cover .button.btn-video.btn-delay-active {
  border-color: #fb7299 !important;
  box-shadow: 0 0 0 2px rgba(251, 114, 153, 0.35), 0 8px 24px rgba(15, 23, 42, 0.24) !important;
}

/* Avoid persistent focus ring on hero action buttons after mouse click */
.hero-cover .publication-links .button:focus,
.hero-cover .publication-links .button:focus-visible {
  outline: none !important;
}

/* Lab logos on cover */
.lab-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-bottom: 1.5rem;
}

.lab-logo {
  height: 50px;
  width: auto;
  opacity: 0.85;
  transition: var(--transition);
}

.lab-logo-maslab {
  height: 70px;
}

.lab-logo:hover {
  opacity: 1;
  transform: scale(1.05);
}

.hero-body {
  padding: 4rem 1.5rem;
}

.teaser .hero-body {
  padding-top: 4.5rem;
  padding-bottom: 4rem;
}

.teaser {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.teaser-intro {
  max-width: 980px;
  margin: 0 auto 2.5rem;
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.15rem);
  line-height: 1.6;
  color: #334155;
}

.results-carousel.teaser-video-carousel {
  width: 100%;
  padding: 0;
}

.teaser-video-item {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: #0f172a;
}

.teaser-video-item video {
  width: 100%;
  display: block;
  border-radius: var(--border-radius-lg);
}


/* Publication Content Styling */
.publication-title {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    font-weight: 800 !important;
    color: var(--text-primary) !important;
    margin-bottom: 2rem !important;
    line-height: 1.1 !important;
}

.publication-title-image {
  display: block;
  width: auto;
  max-width: min(700px, 92vw);
  height: auto;
  margin: 0 auto;
}

.publication-subtitle {
  max-width: 980px;
  margin: 0 auto 1.6rem;
  font-size: clamp(1.05rem, 1.6vw, 1.7rem);
  line-height: 1.35;
  font-weight: 500;
}

.publication-banner {
  max-height: 70vh;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin: 2rem 0;
}

.publication-banner video {
  position: relative;
  left: auto;
  top: auto;
  transform: none;
  object-fit: cover;
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius-lg);
}

.publication-header .hero-body {
  padding: 6rem 1.5rem 4rem;
}

.publication-authors {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.publication-authors.authors-primary {
  margin: 0 auto 1rem;
  line-height: 1.8;
}

.publication-authors.authors-affiliations {
  margin: 0 auto 1.5rem;
  line-height: 1.7;
  font-size: 1.05rem !important;
}

.publication-venue {
    color: var(--text-secondary);
    width: fit-content;
    font-weight: 600;
    background: var(--background-accent);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
    display: inline-block;
}

.publication-awards {
    color: #ef4444;
    width: fit-content;
    font-weight: 700;
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    border-left: 4px solid #ef4444;
    margin-top: 1rem;
}

.publication-authors a {
   color: var(--primary-color) !important;
   text-decoration: none;
   font-weight: 600;
   transition: var(--transition);
   position: relative;
}

.publication-authors a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: var(--gradient-accent);
    transition: var(--transition);
}

.publication-authors a:hover::after {
    width: 100%;
}

.publication-authors a:hover {
    color: var(--primary-hover) !important;
}

.author-block {
  display: inline-block;
  margin-right: 0.5rem;
}

.publication-banner img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.publication-banner img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Modern Video and Carousel Styling */
.publication-video {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    overflow: hidden;
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.publication-video:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.publication-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--border-radius-lg);
}

.publication-body img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.publication-body img:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.results-carousel {
  overflow: hidden;
  padding: 1rem 0;
}

.results-carousel .item {
  margin: 1rem;
  overflow: hidden;
  padding: 1.5rem;
  font-size: 0;
  background: var(--background-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.results-carousel .item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.results-carousel .item img,
.results-carousel video {
  margin: 0;
  border-radius: var(--border-radius);
  width: 100%;
  height: auto;
}

.results-carousel .subtitle {
  font-size: 1rem !important;
  color: var(--text-secondary);
  margin-top: 1rem;
  font-weight: 500;
}

/* Pagination and Misc Improvements */
.slider-pagination .slider-page {
  background: var(--primary-color);
  border-radius: 50%;
  transition: var(--transition);
}

.slider-pagination .slider-page.is-active {
  background: var(--primary-hover);
  transform: scale(1.2);
}

/* Text-label pagination for teaser carousel */
.slider-pagination .slider-page.slider-page-label {
  width: auto;
  height: auto;
  border-radius: var(--border-radius);
  padding: 0.3rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--background-accent);
  border: 1.5px solid var(--border-color);
  cursor: pointer;
  line-height: 1.4;
}

.slider-pagination .slider-page.slider-page-label.is-active {
  color: #fff;
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: none;
  box-shadow: var(--shadow-md);
}

.slider-pagination .slider-page.slider-page-label[data-label="Forest"].is-active {
  background: #228B22;
  border-color: #228B22;
}

.slider-pagination .slider-page.slider-page-label[data-label="Building"].is-active {
  background: #4682B4;
  border-color: #4682B4;
}

.slider-pagination .slider-page.slider-page-label:hover:not(.is-active) {
  background: var(--background-secondary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.eql-cntrb { 
  font-size: 0.875rem;
  color: var(--text-light);
  font-style: italic;
}

/* Section Titles */
.title.is-3 {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
  font-weight: 700 !important;
  color: var(--text-primary);
  margin-bottom: 2rem !important;
  position: relative;
  padding-bottom: 1rem;
}

.title.is-3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

/* Content Improvements */
.content.has-text-justified {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.content.has-text-justified p {
  margin-bottom: 1.5rem;
}

/* Footer Improvements */
.footer {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.5rem;
}

.footer .content {
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.footer a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* BibTeX Styling */
pre {
  background: var(--background-accent) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius) !important;
  padding: 1.5rem !important;
  font-size: 0.9rem !important;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

code {
  background: var(--background-accent) !important;
  color: var(--text-primary) !important;
  font-family: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace !important;
}

/* BibTeX Section Improvements */
.bibtex-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.copy-bibtex-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-bibtex-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.copy-bibtex-btn.copied {
  background: #10b981;
}

.copy-bibtex-btn.copied .copy-text::after {
  content: "ied!";
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-lg);
}

.scroll-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}

/* Mobile Responsive Improvements */
@media screen and (max-width: 768px) {
  .hero-body {
    padding: 2rem 1rem;
  }
  
  .publication-header .hero-body {
    padding: 3rem 1rem 2rem;
  }
  
  .publication-title {
    font-size: 2.5rem !important;
    line-height: 1.2 !important;
    margin-bottom: 1.5rem !important;
  }

  .publication-authors {
    font-size: 1rem !important;
  }
  
  .button {
    margin: 0.25rem !important;
    font-size: 0.875rem !important;
    padding: 0.75rem 1rem !important;
  }
  
  .results-carousel .item {
    margin: 0.5rem;
    padding: 1rem;
  }
  
  .teaser .hero-body {
    padding: 1rem;
  }
  
  .content.has-text-justified {
    font-size: 1rem;
  }
}

@media screen and (max-width: 480px) {
  .publication-title {
    font-size: 2rem !important;
  }

  .hero-body {
    padding: 1.5rem 0.75rem;
  }
  
  .link-block {
    display: block;
    margin-bottom: 0.5rem;
  }
  
  .button {
    width: 100%;
    justify-content: center;
  }
}

/* Tablet Responsive */
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .hero-body {
    padding: 3rem 2rem;
  }
  
  .publication-header .hero-body {
    padding: 4rem 2rem 3rem;
  }
}

/* Animation for page load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero, .section {
  animation: fadeInUp 0.6s ease-out;
}

/* Improved focus states for accessibility */
.button:focus,
a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}


/* Print styles */
@media print {
  .hero, .section {
    animation: none;
  }
  
  .button {
    background: transparent !important;
    color: var(--text-primary) !important;
    box-shadow: none !important;
  }
}