/* ==================== 下拉菜单组件 (Dropdown Menu) ==================== */

/* 
 * 下拉菜单组件 - Linear 风格玻璃态设计
 * 用于操作菜单（非表单选择）
 * 
 * 使用方式：
 * <div class="dropdown" data-dropdown>
 *   <button data-dropdown-trigger>触发器</button>
 *   <div data-dropdown-menu>
 *     <a href="#" data-dropdown-item>菜单项</a>
 *   </div>
 * </div>
 */

/* ==================== 基础结构 ==================== */

/* 下拉菜单容器 */
.dropdown {
  position: relative;
  display: inline-block;
}

/* 打开时提升层级 */
.dropdown--open {
  z-index: 2000;
}

/* 触发器（可以是任何元素：按钮、头像等） */
.dropdown__trigger {
  cursor: pointer;
  user-select: none;
}

/* ==================== 下拉菜单 ==================== */

/* 菜单容器 */
.dropdown__menu,
[data-dropdown-menu] {
  position: absolute;
  min-width: 200px;
  
  /* 深色背景（与原有设计一致） */
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  
  /* 边框与圆角 */
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  
  /* 阴影 */
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  
  /* 内边距 */
  padding: 0.5rem;
  
  /* 默认隐藏 */
  opacity: 0 !important;
  pointer-events: none !important;
  transform: translateY(-10px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 层级 */
  z-index: 2000;
}

/* 打开状态 */
.dropdown--open .dropdown__menu,
.dropdown--open [data-dropdown-menu] {
  opacity: 1 !important;
  pointer-events: all !important;
  transform: translateY(0);
}

/* ==================== 菜单定位 ==================== */

/* 底部右对齐（默认） */
.dropdown__menu--bottom-right {
  top: calc(100% + 8px);
  right: 0;
}

/* 底部左对齐 */
.dropdown__menu--bottom-left {
  top: calc(100% + 8px);
  left: 0;
}

/* 顶部右对齐 */
.dropdown__menu--top-right {
  bottom: calc(100% + 8px);
  right: 0;
  transform: translateY(8px);
}

.dropdown--open .dropdown__menu--top-right {
  transform: translateY(0);
}

/* 顶部左对齐 */
.dropdown__menu--top-left {
  bottom: calc(100% + 8px);
  left: 0;
  transform: translateY(8px);
}

.dropdown--open .dropdown__menu--top-left {
  transform: translateY(0);
}

/* ==================== 菜单项 ==================== */

/* 菜单项基础样式（与原有navbar设计一致） */
.dropdown__item {
  display: block;
  padding: 0.625rem 0.875rem;
  
  color: var(--text-secondary, #a3a3a3);
  font-size: 0.875rem;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  
  border-radius: 0.5rem;
  cursor: pointer;
  user-select: none;
  
  transition: all 0.2s ease;
}

/* 菜单项悬浮 */
.dropdown__item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary, #ffffff);
}

/* 菜单项激活 */
.dropdown__item:active {
  background: rgba(255, 255, 255, 0.08);
}

/* 菜单项图标 */
.dropdown__item-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  font-size: 18px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dropdown__item-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
  stroke: currentColor;
}

/* 菜单项文本 */
.dropdown__item-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 菜单项右侧标签/快捷键 */
.dropdown__item-suffix {
  font-size: 0.75rem;
  color: var(--text-tertiary, #737373);
  flex-shrink: 0;
}

/* ==================== 菜单项变体 ==================== */

/* 禁用状态 */
.dropdown__item--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* 危险操作（如删除、退出登录） */
.dropdown__item--danger {
  color: var(--error, #f87171);
}

.dropdown__item--danger:hover {
  background: rgba(248, 113, 113, 0.1);
  color: var(--error, #f87171);
}

.dropdown__item--danger:active {
  background: rgba(248, 113, 113, 0.15);
}

/* 成功操作 */
.dropdown__item--success {
  color: var(--success, #10b981);
}

.dropdown__item--success:hover {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success, #10b981);
}

/* 警告操作 */
.dropdown__item--warning {
  color: var(--warning, #f59e0b);
}

.dropdown__item--warning:hover {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning, #f59e0b);
}

/* 高亮项 */
.dropdown__item--highlight {
  background: rgba(120, 119, 198, 0.1);
  color: var(--glow-purple, #7877c6);
}

.dropdown__item--highlight:hover {
  background: rgba(120, 119, 198, 0.15);
}

/* ==================== 分隔线 ==================== */

.dropdown__divider {
  height: 1px;
  margin: 0.5rem 0;
  background: rgba(255, 255, 255, 0.05);
}

/* ==================== 菜单标题 ==================== */

.dropdown__header {
  padding: 0.625rem 0.875rem;
  color: var(--text-tertiary, #737373);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  user-select: none;
}

/* ==================== 菜单描述 ==================== */

.dropdown__description {
  padding: 0.625rem 0.875rem;
  color: var(--text-tertiary, #737373);
  font-size: 0.75rem;
  line-height: 1.5;
}

/* ==================== 自定义宽度变体 ==================== */

/* 窄版下拉菜单 */
.dropdown--narrow [data-dropdown-menu],
.dropdown--narrow .dropdown__menu {
  min-width: 160px;
  width: 160px;
}

/* ==================== 响应式 ==================== */

@media (max-width: 768px) {
  .dropdown__menu {
    min-width: 160px;
    max-width: calc(100vw - 32px);
  }
  
  .dropdown__item {
    padding: 0.75rem 1rem;
    min-height: 44px;
    font-size: 0.9375rem;
  }
}

/* ==================== 注意 ==================== */
/* 管理后台始终使用深色主题，不根据系统设置切换 */

/* ==================== 动画增强 ==================== */

/* 为菜单项添加延迟进入动画 */
@keyframes dropdown-item-enter {
  from {
    opacity: 0;
    transform: translateX(-4px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.dropdown--open .dropdown__item {
  animation: dropdown-item-enter 0.15s ease-out backwards;
}

.dropdown--open .dropdown__item:nth-child(1) { animation-delay: 0.02s; }
.dropdown--open .dropdown__item:nth-child(2) { animation-delay: 0.04s; }
.dropdown--open .dropdown__item:nth-child(3) { animation-delay: 0.06s; }
.dropdown--open .dropdown__item:nth-child(4) { animation-delay: 0.08s; }
.dropdown--open .dropdown__item:nth-child(5) { animation-delay: 0.10s; }
.dropdown--open .dropdown__item:nth-child(6) { animation-delay: 0.12s; }
.dropdown--open .dropdown__item:nth-child(7) { animation-delay: 0.14s; }
.dropdown--open .dropdown__item:nth-child(8) { animation-delay: 0.16s; }
.dropdown--open .dropdown__item:nth-child(9) { animation-delay: 0.18s; }
.dropdown--open .dropdown__item:nth-child(10) { animation-delay: 0.20s; }

/* 分隔线和标题不应用动画 */
.dropdown__divider,
.dropdown__header,
.dropdown__description {
  animation: none !important;
}