/* SPA Layout Styles - Clean and Optimized */

/* === CORE LAYOUT === */
.spa-container {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1em;
  gap: 2em;
  min-height: calc(100vh - 80px);
  align-items: flex-start;
}

.spa-sidebar {
  flex: 0 0 300px;
  min-width: 300px;
  position: static;
  padding: 2em 1em;
  box-sizing: border-box;
  background: #fafbfc;
  border-radius: 8px;
  margin-top: 1em;
}

.spa-content {
  flex: 1;
  min-width: 0;
  position: relative;
}

/* === SIDEBAR CONTENT === */
.spa-sidebar .sidebar {
  margin: 0 !important;
  padding: 0 !important;
  width: 100% !important;
  max-width: none !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 2em !important;
  position: static !important;
  max-height: none !important;
  overflow: visible !important;
  transform: none !important;
  -webkit-transform: none !important;
}

/* Profile Box */
.spa-sidebar .profile_box {
  text-align: center !important;
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  gap: 1.5em !important;
  padding: 0 0 2.5em 0 !important;
  margin: 0 0 2.5em 0 !important;
  border-bottom: 1px solid rgba(224, 224, 224, 0.3) !important;
}

/* Author Info */
.spa-sidebar .author__avatar {
  margin: 0 !important;
  flex-shrink: 0 !important;
  text-align: center !important;
}

.spa-sidebar .author__avatar img {
  display: block !important;
  margin: 0 auto !important;
  max-width: 160px !important;
  width: 85% !important;
}

.spa-sidebar .author__content {
  text-align: center !important;
  margin: 0 !important;
  width: 100% !important;
  padding: 0 !important;
  flex-shrink: 0 !important;
}

.spa-sidebar .author__name {
  text-align: center !important;
  margin: 0.8em 0 !important;
  font-size: 1.1em !important;
  line-height: 1.3 !important;
}

.spa-sidebar .author__bio {
  text-align: center !important;
  margin: 0.6em 0 !important;
  font-size: 0.9em !important;
  line-height: 1.4 !important;
}

/* Contact Links */
.spa-sidebar .author__urls-wrapper {
  width: 100% !important;
  display: block !important;
  margin: 0 !important;
  flex-shrink: 0 !important;
}

.spa-sidebar .author__urls {
  text-align: center !important;
  padding: 0 !important;
  margin: 0 !important;
  line-height: 1.6 !important;
  width: 100% !important;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
  height: auto !important;
  max-height: none !important;
  overflow: visible !important;
}

.spa-sidebar .author__urls li {
  margin-bottom: 0.8em !important;
  font-size: 0.9em !important;
  line-height: 1.5 !important;
  text-align: center !important;
}

.spa-sidebar .author__urls a {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0.3em 0 !important;
  white-space: normal !important;
  word-wrap: break-word !important;
  font-size: 0.85em !important;
  gap: 0.5em !important;
  color: #333 !important;
  text-decoration: none !important;
}

/* Icon sizes */
.spa-sidebar .author__urls a i,
.spa-sidebar .author__urls a .fa,
.spa-sidebar .author__urls a svg {
  width: 16px !important;
  height: 16px !important;
  font-size: 14px !important;
  flex-shrink: 0 !important;
}

.spa-sidebar .author__urls a img {
  width: 16px !important;
  height: 16px !important;
  flex-shrink: 0 !important;
  object-fit: contain !important;
}

/* Hide duplicate icons section */
.spa-sidebar .author__urls_sm {
  display: none !important;
}

/* === NAVIGATION === */
.masthead {
  background: white !important;
  border-bottom: 1px solid #e9ecef !important;
  padding: 0 !important;
  position: sticky !important;
  top: 0 !important;
  z-index: 1000 !important;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1) !important;
  width: 100% !important;
}

.masthead__inner-wrap {
  max-width: 1200px !important;
  margin: 0 auto !important;
  padding: 0 2em !important;
  display: flex !important;
  align-items: center !important;
  height: 60px !important;
  position: relative !important;
}

.masthead__menu {
  flex: 1 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
}

.greedy-nav {
  width: 100% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  position: relative !important;
}

.greedy-nav .visible-links {
  display: flex !important;
  align-items: center !important;
  gap: 0.5em !important;
  margin: 0 !important;
  padding: 0 !important;
  flex-wrap: nowrap !important;
  overflow: visible !important;
}

.greedy-nav .visible-links li {
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
  position: relative !important;
}

/* Dropdown menu */
.greedy-nav .hidden-links {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 1000;
  min-width: 150px;
}

.greedy-nav .hidden-links.hidden {
  display: none !important;
}

.greedy-nav .hidden-links:not(.hidden) {
  display: block !important;
}

.greedy-nav button,
.greedy-nav .greedy-nav__toggle {
  background: transparent !important;
  border: none !important;
  padding: 0.5em !important;
  cursor: pointer !important;
  font-size: 1em !important;
  color: #333 !important;
  margin-left: auto !important;
  flex-shrink: 0 !important;
}

.greedy-nav button.hidden,
.greedy-nav .greedy-nav__toggle.hidden {
  display: none !important;
}

.greedy-nav button:not(.hidden),
.greedy-nav .greedy-nav__toggle:not(.hidden) {
  display: inline-block !important;
}

.greedy-nav button::after,
.greedy-nav .greedy-nav__toggle::after {
  content: "☰";
  font-size: 1.2em;
}

/* === RESPONSIVE DESIGN === */

/* Large screens */
@media (min-width: 1600px) {
  .spa-container {
    max-width: 1600px;
    padding: 0 2em;
    gap: 2.5em;
  }
  
  .spa-sidebar {
    flex: 0 0 350px;
  }
}

/* Medium screens */
@media (min-width: 1024px) and (max-width: 1599px) {
  .spa-container {
    max-width: 1300px;
    padding: 0 1.5em;
    gap: 1.8em;
  }
  
  .spa-sidebar {
    flex: 0 0 300px;
  }
}

/* Small laptop screens */
@media (min-width: 900px) and (max-width: 1023px) {
  .spa-container {
    padding: 0 1em;
    gap: 1.2em;
  }
  
  .spa-sidebar {
    flex: 0 0 280px;
    padding: 1.5em 1em;
  }
  
  .spa-sidebar .author__avatar img {
    max-width: 140px !important;
    width: 80% !important;
  }
}

/* Tablet screens */
@media (min-width: 769px) and (max-width: 899px) {
  .spa-container {
    padding: 0 0.8em;
    gap: 1em;
  }
  
  .spa-sidebar {
    flex: 0 0 240px;
    padding: 1.2em 0.8em;
  }
  
  .spa-sidebar .author__avatar img {
    max-width: 120px !important;
    width: 75% !important;
  }
  
  .spa-sidebar .author__urls li {
    font-size: 0.85em !important;
  }
}

/* Mobile and small tablet screens */
@media (max-width: 768px) {
  /* Navigation for mobile */
  .masthead__inner-wrap {
    padding: 0 1em !important;
    height: 60px !important;
    max-width: 100% !important;
  }
  
  .greedy-nav {
    justify-content: flex-start !important;
  }
  
  .greedy-nav .visible-links {
    gap: 0.3em !important;
    flex-wrap: nowrap !important;
    overflow: hidden !important;
  }
  
  .masthead__menu-item a {
    padding: 0.4em 0.6em !important;
    font-size: 0.85em !important;
    border-radius: 4px !important;
    background-color: #f8f9fa !important;
    color: #333 !important;
    font-weight: 500 !important;
    white-space: nowrap !important;
    text-decoration: none !important;
  }
  
  .masthead__menu-item a:hover,
  .masthead__menu-item a.current {
    background-color: #52adc8 !important;
    color: white !important;
  }
  
  /* Mobile layout */
  .spa-container {
    flex-direction: column;
    padding: 0 1em;
    gap: 1em;
    min-height: auto;
  }
  
  .spa-sidebar {
    flex: none;
    position: relative;
    width: 100%;
    max-height: none;
    order: 1;
    padding: 1.5em 1em;
  }
  
  .spa-content {
    flex: none;
    width: 100%;
    order: 2;
  }
  
  /* Mobile sidebar adjustments */
  .spa-sidebar .author__avatar img {
    max-width: 100px !important;
    width: 100px !important;
  }
  
  .spa-sidebar .author__name {
    font-size: 1.1em !important;
  }
  
  .spa-sidebar .author__bio {
    font-size: 0.85em !important;
  }
  
  .spa-sidebar .author__urls li {
    font-size: 0.8em !important;
    margin-bottom: 0.5em !important;
  }
  
  .spa-sidebar .author__urls a i,
  .spa-sidebar .author__urls a .fa,
  .spa-sidebar .author__urls a svg {
    width: 14px !important;
    height: 14px !important;
    font-size: 12px !important;
  }
  
  .spa-sidebar .author__urls a img {
    width: 14px !important;
    height: 14px !important;
  }
  
  /* Publications responsive design */
  .year-header {
    font-size: 1.2em;
  }
  
  .publication-item {
    flex-direction: column;
    gap: 0.8em;
  }
  
  .paper-number {
    align-self: flex-start;
    margin-top: 0;
  }
  
  .paper-content {
    padding-right: 1em;
  }
  
  .category-badge {
    font-size: 1em;
    right: 10px;
    bottom: 8px;
  }
}

/* Very small screens */
@media (max-width: 599px) {
  .spa-sidebar {
    padding: 1em 0.8em;
  }
  
  .spa-sidebar .author__avatar img {
    max-width: 80px !important;
    width: 80px !important;
  }
  
  .spa-sidebar .author__name {
    font-size: 1em !important;
  }
  
  .spa-sidebar .author__bio {
    font-size: 0.8em !important;
  }
  
  .spa-sidebar .author__urls li {
    font-size: 0.75em !important;
  }
}

/* === PUBLICATIONS PAGE === */

/* Publications by Year */
.year-section {
  margin: 2em 0;
}

.year-header {
  color: #2c5aa0;
  font-size: 1.4em;
  font-weight: 600;
  margin-bottom: 1em;
  padding-bottom: 0.5em;
  border-bottom: 2px solid #52adc8;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

.year-count {
  font-size: 0.7em;
  color: #6c757d;
  font-weight: normal;
}

.year-papers {
  display: grid;
  gap: 1.2em;
}

.publication-item {
  background: white;
  border: 1px solid #e9ecef;
  border-radius: 10px;
  padding: 1.2em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  display: flex;
  gap: 1em;
  align-items: flex-start;
}

.publication-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.paper-number {
  background: linear-gradient(135deg, #52adc8, #7bc7d8);
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85em;
  flex-shrink: 0;
  margin-top: 0.2em;
}

.paper-content {
  flex: 1;
  min-width: 0;
  position: relative;
  padding-right: 2em;
  padding-bottom: 0.5em;
  z-index: 2;
}

.publication-item .paper-title {
  font-size: 1.1em;
  font-weight: 600;
  color: #2c5aa0;
  margin-bottom: 0.4em;
  line-height: 1.3;
}

.publication-item .paper-authors {
  color: #495057;
  margin-bottom: 0.8em;
  font-size: 0.9em;
}

.citation-authors {
  margin-bottom: 0.4em;
  line-height: 1.4;
}

.citation-title {
  font-size: 1.05em;
  font-weight: 600;
  color: #2c5aa0;
  margin-bottom: 0.3em;
  line-height: 1.3;
}

.citation-venue {
  color: #666;
  font-size: 0.9em;
  line-height: 1.4;
}

.citation-venue em {
  font-style: italic;
}

.citation-venue strong {
  font-weight: 600;
}

.chicago-citation {
  color: #333;
  font-size: 0.95em;
  line-height: 1.5;
  margin-bottom: 0.8em;
  text-align: justify;
}

.chicago-citation em {
  font-style: italic;
}

.chicago-citation strong {
  font-weight: 600;
  color: #2c5aa0;
}

/* Author markers styling */
.author-marker {
  font-size: 0.8em;
  margin-left: 0.2em;
  font-weight: 600;
}

.author-marker.cofirst {
  color: #d73027;
}

.author-marker.corresponding {
  color: #2166ac;
}

.author-legend {
  font-size: 0.85em;
  color: #666;
  margin-top: 0.3em;
  font-style: italic;
}

.author-legend .author-marker {
  margin-right: 0.3em;
}

.publication-item .paper-links {
  margin-top: 0.5em;
}

.publication-item .paper-links a {
  display: inline-block;
  background: #f8f9fa;
  color: #52adc8;
  text-decoration: none;
  padding: 0.3em 0.6em;
  border-radius: 4px;
  margin-right: 0.4em;
  margin-bottom: 0.3em;
  font-size: 0.8em;
  border: 1px solid #dee2e6;
  transition: all 0.3s ease;
}

.publication-item .paper-links a:hover {
  background: #52adc8;
  color: white;
  transform: translateY(-1px);
}

/* Research category watermarks - elegant transparent background text */
.category-badge {
  position: absolute;
  bottom: 12px;
  right: 15px;
  font-size: 1.2em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  z-index: 1;
  user-select: none;
  pointer-events: none;
  font-family: 'Arial Black', Arial, sans-serif;
}

.category-badge.ai-category {
  color: rgba(102, 126, 234, 0.15);
  text-shadow: 0 0 1px rgba(102, 126, 234, 0.1);
}

.category-badge.science-category {
  color: rgba(240, 147, 251, 0.15);
  text-shadow: 0 0 1px rgba(240, 147, 251, 0.1);
}

.publication-item:hover .category-badge.ai-category {
  color: rgba(102, 126, 234, 0.25);
  text-shadow: 0 0 2px rgba(102, 126, 234, 0.2);
}

.publication-item:hover .category-badge.science-category {
  color: rgba(240, 147, 251, 0.25);
  text-shadow: 0 0 2px rgba(240, 147, 251, 0.2);
}

/* Legacy paper item support */
.paper-item {
  margin-bottom: 1.5em;
  padding-bottom: 1em;
  border-bottom: 1px solid #eee;
}

.paper-item:last-child {
  border-bottom: none;
}

/* === SMOOTH TRANSITIONS === */
.spa-content {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.spa-content.loading {
  opacity: 0.7;
  transform: translateY(10px);
}