.chat-side {
  width: 300px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: width 0.3s ease;
  position: relative;
}

.chat-side.is-collapsed {
  width: 68px !important;
}

.chat-agent-sidebar-toggle {
  position: absolute;
  right: -12px;
  top: 24px;
  width: 24px;
  height: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1001;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  color: var(--color-text-secondary);
  font-size: 12px;
  transition: all 0.2s;
}

.chat-agent-sidebar-toggle:hover {
  color: var(--color-brand);
  border-color: var(--color-brand);
  transform: scale(1.1);
}

.chat-side.is-collapsed .chat-agent-sidebar-header {
  padding: 16px 8px 8px;
}

.chat-side.is-collapsed .chat-agent-create-btn {
  padding: 0 !important;
  width: 40px;
  margin: 0 auto;
}

.chat-side.is-collapsed .chat-agent-sidebar-list {
  padding: 8px;
}

.chat-side.is-collapsed .chat-agent-item {
  justify-content: center;
  padding: 8px 0;
  border-left: none;
}

.chat-side.is-collapsed .chat-agent-item.active {
  background: var(--color-surface-3);
}

.chat-side.is-collapsed .chat-agent-item.active::after {
  right: 4px;
  bottom: 4px;
}

.chat-side.is-full {
  width: 100%;
  border: 0;
}

.chat-agent-sidebar-header {
  padding: 16px 16px 8px;
}

.chat-agent-create-btn {
  height: 40px !important;
  border-radius: 12px !important;
  font-weight: 600 !important;
  background: var(--color-brand) !important;
  border: none !important;
  box-shadow: 0 4px 12px rgba(79, 209, 197, 0.2) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
}

.chat-agent-create-btn:hover {
  background: var(--color-brand-hover) !important;
  transform: translateY(-1px);
}

.chat-agent-tabs {
  padding: 0 16px;
}

.chat-agent-tabs .ant-tabs-nav {
  margin-bottom: 8px !important;
}

.chat-agent-tabs .ant-tabs-tab {
  padding: 8px 4px !important;
  font-size: 13px !important;
  color: var(--color-text-secondary) !important;
}

.chat-agent-tabs .ant-tabs-tab-active .ant-tabs-tab-btn {
  color: var(--color-text) !important;
  font-weight: 600 !important;
}

.chat-agent-tabs .ant-tabs-ink-bar {
  background: var(--color-brand) !important;
  height: 3px !important;
  border-radius: 3px 3px 0 0 !important;
}

.chat-agent-sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
}

.chat-agent-group {
  margin-bottom: 20px;
}

.chat-agent-group-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  padding: 0 8px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-agent-group-count {
  font-weight: 400;
}

.chat-agent-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  cursor: pointer;
  border-radius: 12px;
  margin-bottom: 2px;
  transition: all 0.2s;
  position: relative;
}

.chat-agent-item:hover {
  background: var(--color-surface-2);
}

.chat-agent-item.active {
  background: var(--color-surface-3);
  border-left: 3px solid #5CCFC4;
}

.chat-agent-item.active::after {
  content: '';
  position: absolute;
  right: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-brand);
}

.chat-agent-avatar-wrap {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.chat-agent-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.chat-agent-info {
  flex: 1;
  min-width: 0;
}

.chat-agent-name {
  font-size: 13.5px;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

.chat-agent-item.active .chat-agent-name {
  font-weight: 600;
}

.chat-agent-sidebar-status {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
}

.chat-agent-empty-text,
.chat-agent-loading-text {
  font-size: 12px;
  color: var(--color-text-tertiary);
  line-height: 1.6;
}

.chat-agent-loading-text {
  margin-top: 12px;
}