.case-vignettes-container{max-width:900px;margin:0 auto;padding:20px}.main-header{text-align:center;margin-bottom:30px}.main-header h1{font-size:2.5em;margin-bottom:10px;color:var(--primary-color, #2c3e50)}.main-header p{font-size:1.1em;color:var(--text-secondary, #666)}.stats-panel{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px}.stats-card{background:var(--card-bg, #fff);border-radius:8px;padding:20px;box-shadow:0 2px 4px #0000001a;text-align:center}.stats-card h3{margin:0 0 10px;font-size:.9em;color:var(--text-secondary, #666);text-transform:uppercase;letter-spacing:1px}.stat-number{display:block;font-size:2em;font-weight:700;color:var(--primary-color, #2c3e50)}.filters-container{background:var(--card-bg, white);border-radius:10px;padding:20px;margin-bottom:30px;box-shadow:0 2px 10px #0000001a;border:1px solid var(--border-color, #e9ecef);display:flex;flex-direction:column;gap:20px}.filter-section{margin-bottom:0}.filter-section h3{margin-bottom:10px;color:var(--text-color, #333);font-size:16px;font-weight:600}.filter-buttons{display:flex;flex-wrap:wrap;gap:8px}.filter-button{padding:8px 16px;border:2px solid var(--border-color, #e9ecef);background:var(--card-bg, white);border-radius:20px;cursor:pointer;font-size:14px;font-weight:500;transition:all .3s ease;color:var(--text-color, #666)}.filter-button:hover{border-color:#667eea;color:#667eea}.filter-button.multi-select.active{background:linear-gradient(135deg,#667eea,#764ba2);border-color:#667eea;color:#fff;box-shadow:0 2px 8px #667eea4d;transform:translateY(-1px)}.filter-button.multi-select:hover:not(.active){border-color:#667eea;color:#667eea;background:#667eea0d;transform:translateY(-1px)}body.dark-theme .filter-button.multi-select:hover:not(.active){background:#667eea1a;border-color:#8b9cf7;color:#8b9cf7}.btn{padding:10px 20px;border:none;border-radius:4px;font-size:1em;cursor:pointer;transition:all .3s ease;font-weight:600}.btn-primary{background:var(--primary-color, #2c3e50);color:#fff}.btn-primary:hover{background:var(--primary-hover, #34495e)}.btn-secondary{background:var(--secondary-color, #95a5a6);color:#fff}.btn-secondary:hover{background:var(--secondary-hover, #7f8c8d)}.btn:disabled{opacity:.6;cursor:not-allowed}.case-display-section{background:var(--card-bg, #fff);border-radius:8px;padding:24px;margin-bottom:30px;box-shadow:0 2px 4px #0000001a}.case-header{margin-bottom:25px;padding-bottom:20px;border-bottom:2px solid var(--border-color, #eee)}.case-header h2{margin:0 0 10px;color:var(--primary-color, #2c3e50)}.case-meta{display:flex;gap:10px;flex-wrap:wrap}.difficulty-badge,.location-badge{display:inline-block;padding:5px 12px;border-radius:20px;font-size:.85em;font-weight:600}.difficulty-badge{background:var(--accent-color, #3498db);color:#fff}.location-badge{background:var(--secondary-color, #95a5a6);color:#fff}.case-section{margin-bottom:20px}.case-section h3{margin:0 0 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#17a2b8}.notification-close{background:none;border:none;font-size:1.5em;cursor:pointer;color:var(--text-secondary, #666);padding:0;margin-left:auto}.notification-close:hover{color:var(--text-primary, #333)}@media (max-width: 768px){.case-vignettes-container{padding:10px}.stats-panel{grid-template-columns:repeat(2,1fr)}.filters-container,.filter-buttons{flex-direction:column}.filter-button{text-align:center}.action-buttons{flex-direction:column}.action-buttons button{width:100%}#conversation-buttons{flex-direction:column}#conversation-buttons button{width:100%}.diagnosis-input-container{flex-direction:column}.diagnosis-input-container input,.diagnosis-input-container button{width:100%}}body.dark-theme .conversation-message.user{background:#2196f333;border-left:4px solid #2196f3}body.dark-theme .conversation-message.ai{background:#9c27b033;border-left:4px solid #9c27b0}body.dark-theme .conversation-message.system{background:#ff980033;border-left:4px solid #ff9800}body.dark-theme 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