/**
 * Tierリスト関連スタイル
 */

.tier-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

.tier {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  background: var(--color-controls-bg);
  border: 2px solid var(--color-border);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  padding: var(--gap) var(--gap) var(--gap) 0;
  margin-bottom: 8px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.tier:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border-hover);
}

.tier-label {
  width: calc(var(--slot-width) * 0.5);
  font-weight: bold;
  text-align: center;
  margin-right: 14px;
  font-size: var(--font-size);
}

.tier-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap);
  flex: 1;
  min-height: calc(var(--slot-height) * 1.15);
  align-items: center;
}

.tier-item-wrapper {
  position: relative;
  width: var(--slot-width);
  height: var(--slot-height);
  align-items: flex-end;
  background: var(--color-white);
  border-radius: 8px;
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, border-color 0.2s;
  overflow: hidden;
}

.tier-item-wrapper:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--color-border-hover);
}

.tier-item {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  cursor: grab;
  display: block;
  border-radius: 8px;
  transition: filter 0.2s;
}

.tier-item:active {
  cursor: grabbing;
  filter: brightness(0.93);
}

.label-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background: var(--color-label-overlay);
  color: var(--color-white);
  font-size: var(--font-size);
  text-align: center;
  outline: none;
  resize: none;
  padding: 0px;
  border: none;
  box-sizing: border-box;
  overflow: hidden;
  z-index: 2;
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
  transition: background 0.2s;
}