/* Papers Modal Styles */

.papers-modal {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.2s ease-in;
}

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

.papers-modal-content {
  background-color: #ffffff;
  margin: 2% auto;
  padding: 0;
  width: 90%;
  max-width: 1200px;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideIn 0.3s ease-out;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

@keyframes slideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.papers-modal-header {
  padding: 24px 32px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 12px 12px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.papers-modal-header h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}

.papers-modal-close {
  color: white;
  font-size: 32px;
  font-weight: 300;
  cursor: pointer;
  transition: transform 0.2s;
  line-height: 1;
}

.papers-modal-close:hover {
  transform: scale(1.2);
}

.papers-count {
  padding: 16px 32px;
  background-color: #f8f9fa;
  color: #6c757d;
  font-size: 14px;
  border-bottom: 1px solid #e9ecef;
}

.papers-grid {
  padding: 24px 32px 32px 32px;
  overflow-y: auto;
  flex: 1;
}

.paper-card {
  background: white;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.paper-card:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
  border-color: #667eea;
}

.paper-card-header {
  padding: 20px;
  border-bottom: 1px solid #f0f0f0;
}

.paper-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: #2d3748;
  line-height: 1.4;
}

.paper-card-body {
  padding: 20px;
}

.paper-abstract {
  margin: 0 0 16px 0;
  color: #4a5568;
  font-size: 14px;
  line-height: 1.6;
  text-align: justify;
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #f0f0f0;
}

.paper-meta-item {
  font-size: 12px;
  color: #718096;
  background: #f7fafc;
  padding: 6px 12px;
  border-radius: 4px;
}

.paper-meta-item strong {
  color: #4a5568;
  margin-right: 4px;
}

.paper-card-footer {
  padding: 16px 20px;
  background: #f8f9fa;
  border-radius: 0 0 8px 8px;
  text-align: right;
}

.paper-link {
  display: inline-block;
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
}

.paper-link:hover {
  color: #764ba2;
  transform: translateX(4px);
}

/* Scrollbar styling */
.papers-grid::-webkit-scrollbar {
  width: 8px;
}

.papers-grid::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 4px;
}

.papers-grid::-webkit-scrollbar-thumb {
  background: #cbd5e0;
  border-radius: 4px;
}

.papers-grid::-webkit-scrollbar-thumb:hover {
  background: #a0aec0;
}

/* Responsive design */
@media (max-width: 768px) {
  .papers-modal-content {
    width: 95%;
    margin: 5% auto;
  }
  
  .papers-modal-header {
    padding: 20px;
  }
  
  .papers-modal-header h2 {
    font-size: 20px;
  }
  
  .papers-grid {
    padding: 16px;
  }
  
  .paper-card-header,
  .paper-card-body,
  .paper-card-footer {
    padding: 16px;
  }
  
  .paper-meta {
    flex-direction: column;
    gap: 8px;
  }
}