/* 底部弹层选择器 —— 替代原生 <select> 的手机端交互组件 */

/* 弹层容器 */
.app-picker {
  position: absolute;
  inset: 0;
  z-index: 350;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.app-picker__mask {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  animation: app-picker-fade 0.18s ease;
}

/* 面板 */
.app-picker__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: 16px 16px 0 0;
  max-height: 70%;
  overflow: hidden;
  animation: app-picker-slide 0.24s ease;
  box-shadow: 0 -8px 32px rgb(16 24 40 / 12%);
}

@keyframes app-picker-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes app-picker-slide {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* 头部 */
.app-picker__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.app-picker__title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.app-picker__cancel {
  border: none;
  background: none;
  padding: var(--space-1) var(--space-2);
  font-size: 15px;
  color: var(--color-text-secondary);
}

.app-picker__cancel:active {
  color: var(--color-primary);
}

/* 选项列表 */
.app-picker__list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-2) 0;
}

/* 单个选项 */
.app-picker__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: none;
  background: none;
  font-size: 16px;
  color: var(--color-text);
  text-align: left;
  min-height: 48px;
  transition: background 0.1s ease;
}

.app-picker__item:active {
  background: var(--color-page);
}

.app-picker__item--selected {
  color: var(--color-primary);
  font-weight: 500;
}

.app-picker__check {
  display: flex;
  align-items: center;
  color: var(--color-primary);
}

/* 触发器（替代原生 select 外观） */
.app-picker-trigger {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.app-picker-trigger__label {
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
}

.app-picker-trigger__required {
  color: var(--color-danger);
  margin-left: 2px;
}

.app-picker-trigger__field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 44px;
  padding: 0 var(--space-3);
  color: var(--color-text);
  background: var(--color-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  -webkit-appearance: none;
  appearance: none;
  text-align: left;
}

.app-picker-trigger__field:focus {
  outline: none;
  border-color: var(--color-primary);
}

.app-picker-trigger__field--filled {
  color: var(--color-text);
}

.app-picker-trigger__field--error {
  border-color: var(--color-danger);
}

.app-picker-trigger__display {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 未选中时占位文字颜色 */
.app-picker-trigger__field:not(.app-picker-trigger__field--filled) .app-picker-trigger__display {
  color: var(--color-text-tertiary);
}

.app-picker-trigger__arrow {
  display: flex;
  align-items: center;
  color: var(--color-text-tertiary);
  flex-shrink: 0;
  margin-left: var(--space-2);
}

.app-picker-trigger__field--filled + .app-picker-trigger__arrow,
.app-picker-trigger__field--filled .app-picker-trigger__arrow {
  color: var(--color-text-tertiary);
}

.app-picker-trigger__error {
  margin: 0;
  font-size: 12px;
  color: var(--color-danger);
  line-height: 1.4;
}

/* 只读触发器样式（与输入框只读样式统一） */
.app-picker-trigger__field--readonly {
  color: var(--color-text-secondary);
  background: var(--color-fill, #f5f5f5);
  cursor: default;
}