.grid-container {
    display: flex; gap: 20px; justify-content: center;
}
.category-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px dashed #aaa;
    padding: 10px;
    min-width: 140px;
}
.fighter-slot {
    width: 120px;
    margin: 5px 0;
    text-align: center;
    transition: width 0.3s ease;
}

.fighter-slot:hover {
    width: 140px;
    transition: width 0.3s ease;
}

.fighter-slot img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    cursor: pointer;
}
.empty-slot {
    width: 120px;
    height: 120px;
    background: #f0f0f0;
    margin: 5px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.9em;
}