/* ================================================================
 * WheelPicker — iOS 风格滚轮 CSS
 * 配合 webapp/js/components/wheel-picker.js 使用
 *
 * 关键参数（与 JS 保持一致）：
 *   --wp-item-height: 40px
 *   --wp-visible:     5    （上下各 2 + 中间 1）
 * ================================================================ */

:root {
  --wp-item-height: 40px;
  --wp-visible: 5;
  --wp-text-color: #FFFFFF;
  --wp-text-color-dim: rgba(255, 255, 255, 0.35);
  --wp-text-color-mid: rgba(255, 255, 255, 0.7);
  --wp-text-color-active: #FFFFFF;
  --wp-indicator-bg: rgba(91, 141, 239, 0.12);
  --wp-indicator-border: rgba(91, 141, 239, 0.6);
  --wp-radius: 8px;
}

/* ---------- 单列容器 ---------- */
.wheel-picker {
  position: relative;
  height: calc(var(--wp-item-height) * var(--wp-visible));
  width: 100%;
  overflow: hidden;
  outline: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.wheel-picker:focus-visible {
  box-shadow: 0 0 0 2px var(--wp-indicator-border);
  border-radius: var(--wp-radius);
}

.wheel-picker-scroller {
  position: absolute;
  inset: 0;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  /* 上下两端遮罩淡出 */
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent,
    black 22%,
    black 78%,
    transparent
  );
          mask-image: linear-gradient(
    to bottom,
    transparent,
    black 22%,
    black 78%,
    transparent
  );
}
.wheel-picker-scroller::-webkit-scrollbar { display: none; }

/* ---------- 单项 ---------- */
.wheel-picker-item {
  height: var(--wp-item-height);
  line-height: var(--wp-item-height);
  text-align: center;
  font-size: 18px;
  color: var(--wp-text-color-dim);
  scroll-snap-align: center;
  scroll-snap-stop: always;
  cursor: pointer;
  transition: color 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
  font-variant-numeric: tabular-nums;  /* 数字等宽，对齐好看 */
}
.wheel-picker-item--pad {
  cursor: default;
  pointer-events: none;
  opacity: 0;
}
.wheel-picker-item:hover {
  color: var(--wp-text-color-mid);
}
.wheel-picker-item.is-active,
.wheel-picker-item[aria-selected="true"] {
  color: var(--wp-text-color-active);
  font-weight: 600;
  font-size: 22px;
}
.wheel-picker-item--disabled {
  color: var(--wp-text-color-dim);
  text-decoration: line-through;
  cursor: not-allowed;
}

/* ---------- 中央高亮指示框 ---------- */
.wheel-picker-indicator {
  position: absolute;
  left: 6%;
  right: 6%;
  top: calc(50% - var(--wp-item-height) / 2);
  height: var(--wp-item-height);
  background: var(--wp-indicator-bg);
  border-top: 1px solid var(--wp-indicator-border);
  border-bottom: 1px solid var(--wp-indicator-border);
  pointer-events: none;
  border-radius: 4px;
}

/* ================================================================
 * 复合组件：BirthDatePicker（年 月 日 三栏 + 可选闰月 checkbox）
 * ================================================================ */
.birth-date-picker {
  background: rgba(20, 25, 60, 0.55);
  border: 1px solid rgba(91, 141, 239, 0.18);
  border-radius: 14px;
  padding: 12px 16px;
}
.birth-date-picker-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 8px;
}
.birth-date-picker-col {
  position: relative;
}

/* 农历模式才显示的「闰月」复选框 */
.birth-date-picker-leap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 4px 0;
  margin-top: 4px;
  border-top: 1px solid rgba(91, 141, 239, 0.12);
  font-size: 14px;
  color: var(--wp-text-color-mid);
  cursor: pointer;
  user-select: none;
}
.birth-date-picker-leap input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--wp-indicator-border);
  cursor: pointer;
}
.birth-date-picker-leap span {
  color: var(--wp-text-color-active);
  font-weight: 500;
}
.birth-date-picker-leap small {
  color: var(--wp-text-color-dim);
  font-size: 12px;
  margin-left: auto;
}

/* ================================================================
 * 复合组件：HourPicker（HH : MM）
 * ================================================================ */
.hour-picker {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 4px;
  background: rgba(20, 25, 60, 0.55);
  border: 1px solid rgba(91, 141, 239, 0.18);
  border-radius: 14px;
  padding: 12px 24px;
}
.hour-picker-col { position: relative; }
.hour-picker-sep {
  font-size: 24px;
  color: var(--wp-text-color-mid);
  text-align: center;
  font-weight: 600;
}