/* Chat Header Styles */
.chat-header {
  height: 64px;
  background: white;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 1rem;
  z-index: 10;
  position: sticky;
  top: 0;
}

.chat-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

.sidebar-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: none;
  border: 1px solid #e2e8f0;
  color: #64748b;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.sidebar-toggle-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #475569;
}

.session-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: #1e293b;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}

.chat-header-center {
  flex: 0 0 auto;
}

.chat-header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  justify-content: flex-end;
}

.voice-toggle-btn,
.settings-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: none;
  border: 1px solid #e2e8f0;
  color: #64748b;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.voice-toggle-btn:hover,
.settings-toggle-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #475569;
}

.voice-toggle-btn.active {
  background: #fef3c7;
  border-color: #fbbf24;
  color: #d97706;
}

.voice-toggle-btn.active:hover {
  background: #fde68a;
  border-color: #f59e0b;
}

/* Responsive Design */
@media (max-width: 768px) {
  .chat-header {
    padding: 0 0.75rem;
  }
  
  .session-title {
    max-width: 150px;
  }
  
  .chat-header-center {
    display: none;
  }
  
  .sidebar-toggle-btn {
    display: flex;
  }
}

@media (min-width: 769px) {
  .sidebar-toggle-btn {
    display: none;
  }
} 