:root { --primary-extract: #1a73e8; --bg-extract: #f8f9fa; }

.container-extractor { max-width: 900px; margin: 20px 0; background: white; padding: 20px; border-radius: 8px; border: 1px solid #ddd; }

.header-extractor { border-bottom: 2px solid #eee; margin-bottom: 20px; padding-bottom: 10px; }

.reference-card { 
  padding: 15px; border: 1px solid #e0e0e0; border-radius: 8px; margin-bottom: 12px;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 15px;
  transition: background 0.2s;
}
.reference-card:hover { background-color: #f1f3f4; }

.ref-text { font-size: 0.95em; color: #3c4043; line-height: 1.5; flex-grow: 1; text-align: left; }

.btn-scholar { 
  background: var(--primary-extract); color: white; border: none; padding: 8px 15px; 
  border-radius: 5px; cursor: pointer; text-decoration: none; font-size: 0.85em;
  white-space: nowrap; font-weight: 500;
}
.btn-scholar:hover { background: #1557b0; }

#main-btn { background: #34a853; color: white; border: none; padding: 10px 20px; border-radius: 5px; cursor: pointer; margin-top: 10px; }