.authButton {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-foreground, #1e293b);
  transition: all 0.2s ease;
  font-size: 16px;
  line-height: 1;
  width: 40px;
  height: 40px;
  position: fixed;
  top: 1rem;
  right: 4rem; /* 主题切换按钮左侧 */
  z-index: 1000;
  background: var(--bg-secondary);
  border: 1px solid var(--color-border);
}

.authButton:hover {
  background: var(--bg-tertiary);
  transform: scale(1.05);
}

.authButton:focus {
  outline: 2px solid var(--color-foreground);
  outline-offset: 2px;
}

.authButton:active {
  transform: scale(0.95);
}

.userIndicator {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  border: 2px solid var(--bg-secondary);
}

/* 暗色主题下的特殊样式 */
:global(.dark-theme) .authButton {
  background: var(--bg-secondary);
  border: 1px solid var(--color-border);
}

:global(.dark-theme) .authButton:hover {
  background: var(--bg-tertiary);
}

:global(.dark-theme) .userIndicator {
  border-color: var(--bg-secondary);
}

/* 认证表单样式 */
.authFormOverlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  padding: 16px;
}

.authForm {
  width: 100%;
  max-width: 320px;
  padding: 16px;
  background: var(--component-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-foreground);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.authForm h3 {
  margin: 0 0 16px 0;
  font-size: var(--font-lg);
  font-weight: 600;
  text-align: center;
  color: var(--color-foreground);
}

.authForm form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.authInput {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: var(--font-sm);
  background: var(--input-bg);
  color: var(--color-foreground);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.authInput::placeholder {
  color: var(--color-foreground-subtler);
}

.authInput:focus {
  outline: none;
  border-color: var(--color-muted);
  box-shadow: 0 0 0 2px var(--color-muted);
}

.authButtons {
  display: flex;
  gap: 8px;
}

.authSubmitButton {
  flex: 1;
  padding: 8px 16px;
  background: var(--color-foreground);
  color: var(--bg-primary);
  border: none;
  border-radius: 6px;
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
}

.authSubmitButton:hover:not(:disabled) {
  background: var(--color-foreground-subtle);
}

.authSubmitButton:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.authCancelButton {
  padding: 8px 16px;
  background: transparent;
  color: var(--color-foreground-subtler);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

.authCancelButton:hover {
  background: var(--component-hover);
  border-color: var(--color-foreground-subtle);
}

.authToggle {
  margin-top: 8px;
}

.authToggleButton {
  width: 100%;
  padding: 6px 12px;
  background: transparent;
  color: var(--color-foreground-subtle);
  border: none;
  border-radius: 6px;
  font-size: var(--font-xsm);
  cursor: pointer;
  text-decoration: underline;
  transition: color 0.2s;
}

.authToggleButton:hover {
  color: var(--color-foreground);
}

/* 用户菜单样式 */
.userMenu {
  position: fixed;
  top: 4rem;
  right: 4rem;
  z-index: 1000;
}

.userInfo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--component-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  min-width: 160px;
}

.userAvatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-foreground);
  color: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-sm);
  font-weight: 600;
  flex-shrink: 0;
}

.userName {
  font-weight: 500;
  color: var(--color-foreground);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.logoutButton {
  padding: 4px 8px;
  font-size: var(--font-xsm);
  color: #ef4444;
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.logoutButton:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* 暗色主题下的样式优化 */
:global(.dark-theme) .authForm {
  background: var(--component-bg);
  border-color: var(--color-border);
}

:global(.dark-theme) .authInput {
  background: var(--input-bg);
  border-color: var(--color-border);
}

:global(.dark-theme) .userInfo {
  background: var(--component-bg);
  border-color: var(--color-border);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .authButton {
    top: 0.75rem;
    right: 3.5rem;
    width: 36px;
    height: 36px;
    font-size: 14px;
  }

  .userMenu {
    top: 3.5rem;
    right: 3.5rem;
  }

  .authFormOverlay {
    padding: 12px;
  }

  .authForm {
    padding: 12px;
  }
}