/* ===========================================
   背包/物资管理面板样式
   =========================================== */

.inventory-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* 头部统计 */
.inventory-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.inventory-panel__stats {
  display: flex;
  gap: var(--spacing-lg);
}

.inventory-panel__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.inventory-panel__stat-label {
  font-size: var(--font-size-xs);
  color: var(--ink-faded);
}

.inventory-panel__stat-value {
  font-family: var(--font-mono);
  font-size: var(--font-size-lg);
  font-weight: bold;
  color: var(--ink-color);
}

/* 网格容器 */
.inventory-panel__grid-container {
  display: flex;
  justify-content: center;
  padding: var(--spacing-md);
  background: var(--parchment-bg);
  border-radius: var(--border-radius-sm);
}

/* 背包网格 */
.inventory-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), 40px);
  grid-template-rows: repeat(var(--grid-rows), 40px);
  gap: 2px;
  background: var(--border-color);
  padding: 2px;
  border-radius: var(--border-radius-sm);
  position: relative;
}

/* 网格格子 */
.inventory-grid__cell {
  width: 40px;
  height: 40px;
  background: var(--parchment-light);
  border-radius: 2px;
  transition: background var(--transition-fast);
}

.inventory-grid__cell--empty:hover {
  background: var(--parchment-dark);
}

.inventory-grid__cell--occupied {
  background: transparent;
}

.inventory-grid__cell--selected {
  box-shadow: inset 0 0 0 2px var(--accent-gold);
}

/* 物品块 */
.inventory-item {
  position: absolute;
  left: calc(var(--item-x) * 42px + 2px);
  top: calc(var(--item-y) * 42px + 2px);
  width: calc(var(--item-width) * 40px + (var(--item-width) - 1) * 2px);
  height: calc(var(--item-height) * 40px + (var(--item-height) - 1) * 2px);
  border-radius: var(--border-radius-sm);
  cursor: grab;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 2px solid rgba(0, 0, 0, 0.2);
  box-shadow: var(--shadow-small);
}

.inventory-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-medium);
  z-index: 10;
}

.inventory-item--selected {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 2px var(--accent-gold), var(--shadow-medium);
}

.inventory-item--dragging {
  opacity: 0.5;
  cursor: grabbing;
}

.inventory-item--ghost {
  background: transparent !important;
  box-shadow: none;
  cursor: default;
  pointer-events: none;
  border-style: dashed;
  opacity: 0.9;
  z-index: 5;
}

.inventory-item--ghost.inventory-item--valid {
  border-color: rgba(40, 167, 69, 0.9);
}

.inventory-item--ghost.inventory-item--invalid {
  border-color: rgba(220, 53, 69, 0.9);
}

.inventory-item__weight {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: bold;
  color: white;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  pointer-events: none;
}

/* 操作区 */
.inventory-panel__actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(201, 162, 39, 0.1);
  border: 1px solid var(--accent-gold);
  border-radius: var(--border-radius-sm);
}

.inventory-panel__selected-info {
  color: var(--ink-color);
  font-weight: bold;
}

.inventory-panel__action-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.inventory-panel__action-buttons .btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.inventory-panel__grid-settings {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.inventory-panel__grid-field {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.inventory-panel__grid-label {
  font-size: var(--font-size-sm);
  color: var(--ink-faded);
}

.inventory-panel__grid-input {
  width: 72px;
}

/* 提示 */
.inventory-panel__hint {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--ink-faded);
}

/* 添加食物界面 */
.inventory-panel--add {
  min-width: 400px;
}

.inventory-panel__section-title {
  font-family: var(--font-title);
  font-size: var(--font-size-md);
  color: var(--ink-light);
  margin: 0 0 var(--spacing-sm);
}

.inventory-panel__presets {
  margin-bottom: var(--spacing-md);
}

.inventory-panel__filters {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.inventory-panel__food-search {
  width: 100%;
}

.inventory-panel__weight-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.inventory-panel__weight-filter--active {
  border-color: var(--accent-gold);
  background: rgba(201, 162, 39, 0.1);
}

.inventory-panel__food-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  color: var(--ink-color);
}

.inventory-panel__preset-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.inventory-panel--add .inventory-panel__preset-list {
  max-height: 45vh;
  overflow: auto;
  padding-right: var(--spacing-xs);
}

.inventory-panel__preset-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--parchment-bg);
  border: 2px solid transparent;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.inventory-panel__preset-item:hover {
  background: var(--parchment-dark);
}

.inventory-panel__preset-item--selected {
  border-color: var(--accent-gold);
  background: rgba(201, 162, 39, 0.1);
}

.inventory-panel__preset-color {
  width: 24px;
  height: 24px;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.inventory-panel__preset-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.inventory-panel__preset-name {
  font-weight: bold;
  color: var(--ink-color);
}

.inventory-panel__preset-weight {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--ink-faded);
}

.inventory-panel__preset-shapes {
  font-size: var(--font-size-xs);
  color: var(--ink-faded);
}

/* 形状选择器 */
.inventory-panel__shape-selector {
  margin-bottom: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.inventory-panel__shapes {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.inventory-panel__shape {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--parchment-bg);
  border: 2px solid transparent;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.inventory-panel__shape:hover {
  background: var(--parchment-dark);
}

.inventory-panel__shape--selected {
  border-color: var(--accent-gold);
  background: rgba(201, 162, 39, 0.1);
}

.inventory-panel__shape-preview {
  display: grid;
  grid-template-columns: repeat(var(--preview-cols), 16px);
  grid-template-rows: repeat(var(--preview-rows), 16px);
  gap: 2px;
}

.inventory-panel__shape-cell {
  width: 16px;
  height: 16px;
  border-radius: 2px;
  border: 1px solid var(--border-color);
}

.inventory-panel__shape-cell--filled {
  border-color: rgba(0, 0, 0, 0.2);
}

.inventory-panel__shape-size {
  font-size: var(--font-size-xs);
  color: var(--ink-faded);
}

/* 添加操作区 */
.inventory-panel__add-actions {
  display: flex;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}