body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

.project-card {
  background: var(--white);
  border-radius: 8px;
  margin-bottom: 2rem;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  overflow: hidden;
  border: 1px solid #e9ecef;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
  background-color: #fff;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.project-card .card-body {
  padding: 1.25rem;
}

.project-title {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 1.25rem;
  color: #2c3e50;
}

.project-summary {
  padding: 0.5rem 0;
}

.project-summary img, 
.project-details img {
  border-radius: 8px;
  transition: var(--transition);
}

.project-card:hover img {
  transform: scale(1.02);
}

.project-thumbnail {
  max-height: 80px;
  width: auto;
  object-fit: cover;
  border: 1px solid #dee2e6;
}

.toggle-btn {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  color: #495057;
  cursor: pointer;
  transition: all 0.2s;
}

.compact-btn {
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-btn:hover {
  background-color: #e9ecef;
  border-color: #ced4da;
  color: #212529;
}

.entity-logo {
  height: 40px;
  max-width: 100px;
  object-fit: contain;
}

.entity-logo:hover {
  transform: scale(1.1);
}

.researcher-link {
  color: #007bff;
  text-decoration: none;
  transition: color 0.15s;
}

.researcher-link:hover {
  color: #0056b3;
  text-decoration: underline;
}

.project-details {
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (max-width: 767px) {
  .project-summary .col-sm-7, .project-summary .col-sm-9 {
    padding-top: 0.5rem;
  }
  
  .project-summary .d-flex {
    flex-direction: column;
  }
  
  .project-summary .me-4 {
    margin-right: 0 !important;
    margin-bottom: 0.5rem !important;
  }
}

.nav-tabs {
  border-bottom: 2px solid #e9ecef;
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.nav-tabs .nav-link {
  border: none;
  color: #6c757d;
  font-weight: 600;
  font-size: 1.1rem;
  padding: 0.75rem 2rem;
  margin: 0 0.75rem;
  position: relative;
  transition: all 0.3s ease;
  background: transparent;
}

.nav-tabs .nav-link:hover {
  color: var(--secondary-color, #0056b3);
  background-color: transparent;
  border-color: transparent;
}

.nav-tabs .nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 3px;
  bottom: 0;
  left: 50%;
  background-color: var(--secondary-color, #0056b3);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-tabs .nav-link:hover::after {
  width: 30%;
}

.nav-tabs .nav-link.active {
  color: var(--secondary-color, #0056b3);
  background-color: transparent;
  border: none;
}

.nav-tabs .nav-link.active::after {
  width: 70%;
}

.tab-pane {
  transition: all 0.3s ease-in-out;
  position: relative;
}

.tab-pane.fade {
  opacity: 0;
  transform: translateY(10px);
}

.tab-pane.fade.show.active {
  opacity: 1;
  transform: translateY(0);
}

/* Animación para los elementos dentro de las pestañas */
.tab-pane .fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.tab-pane.show.active .fade-in {
  opacity: 1;
  transform: translateY(0);
}

.project-details .card {
  transition: transform 0.3s, box-shadow 0.3s;
}

.project-details .card:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 10px rgba(0,0,0,0.1);
}

.project-details h5 {
  color: var(--primary-color, #2c3e50);
  border-bottom: 1px solid rgba(0,0,0,0.1);
  padding-bottom: 0.5rem;
}