#publication-filters {
  box-sizing: border-box;
  margin-bottom: 30px;
  padding: 20px;
  background-color: #f8fbff;
  border: 2px solid #003f7e;
  border-radius: 5px;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 0.95em;
}

.filter-group {
  margin-bottom: 15px;
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-group strong {
  margin-right: 10px;
  font-weight: 600;
}

.filter-btn {
  padding: 8px 16px;
  margin: 0 5px 5px 0;
  border: 1px solid #ddd;
  background-color: white;
  color: #333;
  cursor: pointer;
  border-radius: 4px;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 0.95em;
  transition: all 0.3s ease;
}

.filter-btn:hover {
  background-color: #f0f0f0;
  border-color: #999;
}

.filter-btn.active {
  background-color: #003f7e;
  color: white;
  border-color: #003f7e;
}

.filter-btn.active:hover {
  background-color: #0056b3;
  border-color: #0056b3;
}

.filter-count {
  font-size: 0.85em;
  opacity: 0.85;
  margin-left: 6px;
  font-weight: normal;
}

#publication-footer {
  margin-top: 40px;
  padding: 12px 16px;
  background-color: #f8f8f8;
  border-left: 4px solid #003f7e;
  border-radius: 4px;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 1.05em;
  color: #555;
  line-height: 1.6;
  font-style: italic;
}

#publication-footer p {
  margin: 0;
}

#acknowledgements-collapsible {
  margin-top: 40px;
  border: 1px solid #ddd;
  border-radius: 4px;
  overflow: hidden;
}

.acknowledgements-toggle {
  width: 100%;
  text-align: left;
  background-color: #f5f5f5;
  border: none;
  padding: 15px 20px;
  cursor: pointer;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  transition: background-color 0.3s ease;
}

.acknowledgements-toggle:hover {
  background-color: #e8e8e8;
}

.acknowledgements-toggle h2 {
  margin: 0;
  font-family: "Titillium Web", sans-serif;
  font-weight: 500;
  color: #003f7e;
  font-size: 1.5em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.toggle-icon {
  font-size: 0.8em;
  transition: transform 0.3s ease;
}

.acknowledgements-collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.acknowledgements-content {
  padding: 20px;
  display: block;
  font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 1em;
  line-height: 1.6;
  background-color: #f0f7ff; /* Faint light blue */
}

.acknowledgements-content p {
  font-size: 1em;
  margin-bottom: 15px;
}

.acknowledgements-content ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 8px 20px;
  margin-left: 0;
  list-style: none;
  padding-left: 0;
}

.acknowledgements-content ul li {
  margin-bottom: 0;
}

.acknowledgements-content ul li a {
  font-size: 1em;
}

.acknowledgements-collapsed .acknowledgements-content {
  display: none;
}

/* Publication item styling - card design */
#publications-container ul {
  list-style: none;
  padding-left: 0;
}

#publications-container ul li {
  margin-bottom: 5px;
  padding: 10px 18px 10px 55px;
  font-size: 1.02em;
  line-height: 1.3;
  font-weight: 500;
  color: #222;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.04);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
  list-style: none;
}

#publications-container ul li::before {
  content: "\f15b";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  position: absolute;
  left: 15px;
  top: 15px;
  font-size: 1.8em;
  color: #003f7e;
  opacity: 0.85;
  transition: all 0.3s ease;
  /* Cartoonish filter/shadow */
  text-shadow: 2px 2px 0px rgba(0, 63, 126, 0.1);
}

#publications-container ul li:hover::before {
  transform: scale(1.1) rotate(-5deg);
  opacity: 1;
  color: #0056b3;
}

#publications-container ul li:hover {
  box-shadow: 0 10px 25px rgba(0, 63, 126, 0.12);
  border-color: #003f7e;
  background-color: #fff;
  transform: translateY(-4px);
  z-index: 10;
}

/* Search group styling */
.search-group {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.search-group input {
  box-sizing: border-box;
  flex: 1;
  max-width: 450px;
  padding: 12px 16px;
  border: 2px solid #eee;
  border-radius: 8px;
  font-size: 1em;
  font-family: inherit;
  transition: all 0.3s ease;
  background-color: #f9f9f9;
}

.search-group input:focus {
  outline: none;
  border-color: #003f7e;
  background-color: #fff;
  box-shadow: 0 4px 12px rgba(0, 63, 126, 0.08);
}

.search-count-badge {
  background-color: #f0f4f8;
  color: #003f7e;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.85em;
  font-weight: 600;
  border: 1px solid #d1d9e0;
  display: inline-block;
  margin-left: 10px;
  transition: all 0.3s ease;
}

/* Compact spacing - eliminating br gaps */
#publications-container ul li br {
  display: none;
}

/* Paper title - first line (wrapped in span by JS) */
.pub-title {
  font-size: 1.1em;
  font-weight: 700;
  color: #111;
  display: block;
  margin-bottom: 2px;
  line-height: 1.25;
}

/* Authors - second line (wrapped in span by JS) */
.pub-authors {
  font-size: 0.95em;
  font-weight: 400;
  color: #444;
  display: block;
  margin-bottom: 3px;
}

/* Ensure authors stay on same line including bold Huan Li */
.pub-authors b {
  display: inline;
  color: #000;
}

/* Venue styling - italic, same size as authors */
#publications-container ul li i {
  font-size: 0.95em;
  color: #555;
  font-style: italic;
  font-weight: normal;
  display: block;
  margin-top: 5px;
  margin-bottom: 8px;
}
/* Mobile and Tablet Responsiveness */
@media (max-width: 768px) {
  #publication-filters {
    padding: 15px;
  }

  .filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .filter-group strong {
    margin-bottom: 5px;
  }

  .filter-btn {
    padding: 6px 12px;
    font-size: 0.9em;
  }

  .search-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-group input {
    max-width: 100%;
    width: 100%;
  }

  .search-count-badge {
    margin-left: 0;
    margin-top: 8px;
  }

  #publications-container ul li {
    padding: 12px 15px 12px 45px;
    font-size: 0.95em;
  }

  #publications-container ul li::before {
    font-size: 1.5em;
    left: 10px;
    top: 12px;
  }

  .pub-title {
    font-size: 1em;
  }

  .year-section {
    font-size: 1.4em;
    margin-top: 25px;
  }
}

@media (max-width: 480px) {
  #publications-container ul li {
    padding: 10px 12px 10px 40px;
  }

  #publications-container ul li::before {
    font-size: 1.2em;
    left: 8px;
    top: 10px;
  }

  #publication-footer {
    font-size: 0.95em;
    padding: 10px;
  }

  .search-count-badge {
    font-size: 0.75em;
  }
}

/* Buttons area - compact spacing */
#publications-container ul li > a {
  margin-top: 2px;
  display: inline-block;
}

/* Make the publication list items more compact */
#publications-container ul {
  margin-left: 0;
}