/* tree-select.css - 联系我们弹窗"感兴趣的产品或方案"树形选择器 */

.tree-select {
  position: relative;
  width: 100%;
}

.tree-select__trigger {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9375rem;
  color: var(--color-text-primary, #1f2937);
  background: #fff;
  border: 1px solid #D9D9D9;
  border-radius: var(--radius-md, 6px);
  cursor: pointer;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

.tree-select.is-open .tree-select__trigger,
.tree-select__trigger:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.tree-select__trigger-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}

.tree-select__chevron {
  flex-shrink: 0;
  color: #6b7280;
  transition: transform .15s;
}

.tree-select.is-open .tree-select__chevron {
  transform: rotate(180deg);
}

.tree-select__panel {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 320px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid #D9D9D9;
  border-radius: var(--radius-md, 6px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, .1);
  padding: 4px 0;
}

.tree-select__level {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tree-select__row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.9375rem;
  line-height: 1.3;
}

.tree-select__row:hover {
  background: var(--color-primary-light, #eff6ff);
}

.tree-select__row.is-selected {
  color: var(--color-primary, #2563eb);
  font-weight: 600;
  background: var(--color-primary-light, #eff6ff);
}

/* 一级：加粗 */
.tree-select__row--1 {
  font-weight: 600;
  padding-left: 12px;
}

/* 二级：中等字重 + 缩进 */
.tree-select__row--2 {
  font-weight: 500;
  padding-left: 28px;
}

/* 三级及以上：常规字重 + 更深缩进 */
.tree-select__row--3,
.tree-select__row--4 {
  font-weight: 400;
  color: var(--color-text-secondary, #4b5563);
  padding-left: 44px;
}

.tree-select__toggle {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.tree-select__toggle:not(.tree-select__toggle--leaf)::before {
  content: '';
  width: 0;
  height: 0;
  border-left: 5px solid #6b7280;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: transform .15s;
}

.tree-select__item.is-expanded > .tree-select__row .tree-select__toggle::before {
  transform: rotate(90deg);
}

.tree-select__item > .tree-select__level {
  display: none;
}

.tree-select__item.is-expanded > .tree-select__level {
  display: block;
}

.tree-select__label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}