/* ============================================
   背包样式 · 杂志风格
   ============================================ */

/* --- 物品详情提示框 --- */
.item-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--surface);
    border: 1px solid var(--border-light);
    padding: 10px 14px;
    min-width: 160px;
    z-index: 100;
    display: none;
}

.inventory-slot:hover .item-tooltip {
    display: block;
}

.tooltip-header {
    font-family: var(--font-serif);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.tooltip-description {
    font-family: var(--font-sans);
    font-size: 11px;
    color: var(--text-dim);
    margin-bottom: 6px;
    line-height: 1.5;
}

.tooltip-effects {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--success);
}

.tooltip-effects div {
    margin-bottom: 2px;
}

/* --- 背包排序和筛选 --- */
.inventory-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.sort-btn, .filter-btn {
    background-color: var(--surface-3);
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 4px 10px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 10px;
    transition: all var(--transition);
    letter-spacing: 0.5px;
}

.sort-btn:hover, .filter-btn:hover {
    color: var(--text);
    border-color: var(--text-dim);
}

.filter-select {
    background-color: var(--surface-3);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: 10px;
    cursor: pointer;
}

/* --- 背包容量 --- */
.inventory-capacity {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.capacity-bar {
    flex: 1;
    height: 4px;
    background-color: var(--surface-3);
    overflow: hidden;
    margin: 0 10px;
}

.capacity-fill {
    height: 100%;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.capacity-text {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
}

/* --- 拖拽状态 --- */
.inventory-slot.dragging {
    opacity: 0.4;
    border-color: var(--accent);
}

.inventory-slot.drag-over {
    background-color: var(--accent-glow);
    border-color: var(--accent);
}

.inventory-slot.selected {
    border-color: var(--accent);
    background-color: var(--accent-glow);
}

/* --- 物品获取动画 --- */
@keyframes itemGet {
    0%   { transform: scale(0.6); opacity: 0; }
    50%  { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.inventory-slot.new-item {
    animation: itemGet 0.25s ease;
}

/* --- 物品丢弃动画 --- */
@keyframes itemDrop {
    0%   { transform: scale(1); opacity: 1; }
    100% { transform: scale(0.6); opacity: 0; }
}

.inventory-slot.dropping {
    animation: itemDrop 0.25s ease forwards;
}

/* --- 响应式 --- */
@media (max-width: 768px) {
    .inventory-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 480px) {
    .inventory-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}