/* ===== 地区选择弹窗 ===== */
.region-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}

.region-mask.show {
  opacity: 1;
  visibility: visible;
}

.region-sheet {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%) translateY(100%);
  width: 100%;
  max-width: 480px;
  max-height: 72vh;
  background: #fff;
  border-radius: 16px 16px 0 0;
  z-index: 201;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.region-sheet.show {
  transform: translateX(-50%) translateY(0);
}

body.region-open {
  overflow: hidden;
}

.region-sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 12px;
  flex-shrink: 0;
}

.region-sheet-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.region-sheet-close {
  width: 32px;
  height: 32px;
  border: none;
  background: #f0f0f0;
  border-radius: 50%;
  color: #999;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.region-sheet-close svg {
  width: 16px;
  height: 16px;
}

.region-tabs {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px;
  border-bottom: 1px solid #f0f0f0;
  flex-shrink: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.region-tabs::-webkit-scrollbar {
  display: none;
}

.region-tab {
  flex-shrink: 0;
  max-width: 120px;
  padding: 0;
  border: none;
  background: transparent;
  font-size: 14px;
  color: #999;
  cursor: pointer;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
}

.region-tab span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.region-tab.active {
  color: var(--red);
  font-weight: 600;
}

.region-tab.done {
  color: var(--text);
}

.region-list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 4px 0;
}

.region-item {
  padding: 14px 20px;
  font-size: 15px;
  color: var(--text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.region-item:active {
  background: #fafafa;
}