/**
 * 统一下拉框增强样式（TDesign 风格）
 * 将原生 <select> 视觉替换为与项目 UI 一致的下拉组件，原生 select 仍保留在 DOM 中承载取值与事件。
 */

/* 原生 select 被增强后隐藏（保留可提交/可取值） */
select.tdx-enhanced {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* 触发器（模拟 t-input 外观） */
.tdx-select {
  --tdx-primary: #0052d9;
  --tdx-border: #dcdcdc;
  --tdx-text: #1d2129;
  --tdx-placeholder: #a8abb2;
  --tdx-hover-bg: #f3f5ff;
  position: relative;
  display: inline-flex;
  box-sizing: border-box;
  vertical-align: middle;
}
.tdx-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  min-height: 32px;
  padding: 4px 10px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--tdx-text);
  background: #fff;
  border: 1px solid var(--tdx-border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color .2s, box-shadow .2s;
  box-sizing: border-box;
  user-select: none;
}
.tdx-select-trigger:hover { border-color: var(--tdx-primary); }
.tdx-select.is-open .tdx-select-trigger {
  border-color: var(--tdx-primary);
  box-shadow: 0 0 0 2px rgba(0, 82, 217, .12);
}
.tdx-select.is-disabled .tdx-select-trigger {
  background: #f5f5f5;
  color: #bbb;
  cursor: not-allowed;
  border-color: #e5e6eb;
}
.tdx-select-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tdx-select-value.is-placeholder { color: var(--tdx-placeholder); }
.tdx-select-arrow {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: #a8abb2;
  transition: transform .2s;
}
.tdx-select.is-open .tdx-select-arrow { transform: rotate(180deg); color: var(--tdx-primary); }

/* 下拉面板（悬浮到 body，模拟 t-popup） */
.tdx-select-panel {
  position: absolute;
  z-index: 20000;
  min-width: 120px;
  max-height: 280px;
  overflow-y: auto;
  padding: 6px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 3px 14px 2px rgba(0, 0, 0, .05), 0 8px 10px 1px rgba(0, 0, 0, .06), 0 5px 5px -3px rgba(0, 0, 0, .1);
  border: 1px solid #e7e7e7;
  animation: tdxFade .18s ease;
}
@keyframes tdxFade { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
.tdx-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--tdx-text, #1d2129);
  border-radius: 4px;
  cursor: pointer;
  transition: background .15s;
  white-space: nowrap;
}
.tdx-option:hover { background: #f3f5ff; }
.tdx-option.is-selected { color: #0052d9; font-weight: 600; background: #f2f5ff; }
.tdx-option.is-disabled { color: #c9cdd4; cursor: not-allowed; background: none; }
.tdx-option .tdx-check {
  width: 15px; height: 15px; flex-shrink: 0; opacity: 0;
}
.tdx-option.is-selected .tdx-check { opacity: 1; }
.tdx-option-group-label {
  padding: 6px 12px 4px;
  font-size: 12px;
  color: #a8abb2;
  cursor: default;
}
.tdx-panel-empty {
  padding: 14px 12px;
  font-size: 13px;
  color: #a8abb2;
  text-align: center;
}