@use "sass:list";
@use "sass:color";
@use "styles/library" as library;

$dropdown_bg: oklch(1 0 0); // FFFFFF
$dropdown_border_color: oklch(0 0 0 / 20%);
$dropdown_hover: oklch(0.9702 0 0); // F5F5F5
$dropdown_selected: oklch(0.9738 0.0151 54.93); // FFF4ED
$dropdown_accent: oklch(0.7086 0.1896 39.86); // #FF6E37

$dropdown_height: 40px;
$dropdown_border_radius: 8px;

$dropdown_animation_timing: cubic-bezier(0.4, 0, 0.2, 1);
$dropdown_animation_duration: 0.2s;

:host {
  display: inline-block;
  position: relative;

  padding: 0; margin: 0;

  background-color: $dropdown_bg;
  border-radius: $dropdown_border_radius;
  box-shadow: 0 0 0 1px $dropdown_border_color inset;
  outline: none;
  cursor: pointer;

  max-width: 100%;
  --dropdown-duration: #{$dropdown_animation_duration};

  &.reduce-motion {
    --dropdown-duration: 0s;
  }

  &:focus-visible {
    box-shadow: 0 0 0 1px $dropdown_border_color inset, 0 0 0 2px white, 0 0 0 4px $dropdown_accent;
  }
}

.dropdown-box {
  display: flex;
  align-items: center;
  padding: 0 10px;
  height: $dropdown_height;
  box-sizing: border-box;
  gap: 8px;

  .prefix-icon {
    width: 24px; height: 24px;
    flex-shrink: 0;
    user-select: none;
  }

  .placeholder {
    flex-grow: 1;
    font-size: 18px;
    line-height: 1.2; // descender(g, y 등)가 잘리지 않도록 행간 확보
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    user-select: none;
  }

  .chevron {
    width: 24px; height: 24px;
    flex-shrink: 0;
    transition: transform var(--dropdown-duration) $dropdown_animation_timing;
    user-select: none;

    &.open {
      transform: rotate(180deg);
    }
  }
}

.dropdown-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  width: 100%;
  padding: 0; // 아이템이 꽉 차도록 패딩 제거
  margin: 0;
  list-style: none;
  background-color: $dropdown_bg;
  border-radius: $dropdown_border_radius;
  z-index: 1000;
  max-height: 240px;
  overflow-y: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  animation: slideIn var(--dropdown-duration) $dropdown_animation_timing;

  // 자식 요소의 배경색이 테두리를 침범하지 못하도록 하는 사용자님의 핵심 설계 복구
  &::after {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: $dropdown_border_radius;
    box-shadow: 0 0 0 1px $dropdown_border_color inset;
    pointer-events: none;
    z-index: 1001; // 테두리를 최상단으로!
  }

  @keyframes slideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

.dropdown-item {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 16px;
  position: relative;
  line-height: 1.2; // descender 보호를 위해 1에서 1.2로 수정
  transition: background-color $dropdown_animation_duration $dropdown_animation_timing;

  &:hover, &.focused {
    background-color: $dropdown_hover;
  }

  &.selected {
    background-color: $dropdown_selected;
    color: $dropdown_accent;
    font-weight: 600;
  }
}