.container {
    position: relative;
    width: 25rem;
    height: 18.75rem;
    margin: 1.25rem auto;
    background: var(--bg);
    border-radius: var(--radius);
    border: 2px solid var(--border);
}

.draggable {
    position: absolute;
    width: 3.125rem;
    height: 3.125rem;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    cursor: move;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.draggable:hover {
    background: #5a35a8;
}

.horizontal {
    /* Position will be set by JavaScript */
}

.vertical {
    /* Position will be set by JavaScript */
}

.combined-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 5rem;
    height: 5rem;
    background: var(--bg);
    border: 2px solid var(--accent);
    border-radius: var(--radius);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
}

@media (max-width: 1440px) {
    .container {
        width: 23.75rem;
        height: 17.8125rem;
        margin: 1.125rem auto;
    }
    .draggable {
        width: 2.9375rem;
        height: 2.9375rem;
        font-size: 1.4375rem;
    }
    .horizontal {
        /* Position will be set by JavaScript */
    }
    .vertical {
        /* Position will be set by JavaScript */
    }
    .combined-box {
        width: 4.75rem;
        height: 4.75rem;
        font-size: 1.4375rem;
    }
}

@media (max-width: 1024px) {
    .container {
        width: 22.5rem;
        height: 16.875rem;
        margin: 1rem auto;
    }
    .draggable {
        width: 2.75rem;
        height: 2.75rem;
        font-size: 1.375rem;
    }
    .horizontal {
        /* Position will be set by JavaScript */
    }
    .vertical {
        /* Position will be set by JavaScript */
    }
    .combined-box {
        width: 4.5rem;
        height: 4.5rem;
        font-size: 1.375rem;
    }
}

@media (max-width: 768px) {
    .container {
        width: 20rem;
        height: 15rem;
        margin: 0.875rem auto;
    }
    .draggable {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.3125rem;
    }
    .horizontal {
        /* Position will be set by JavaScript */
    }
    .vertical {
        /* Position will be set by JavaScript */
    }
    .combined-box {
        width: 4rem;
        height: 4rem;
        font-size: 1.3125rem;
    }
}

@media (max-width: 480px) {
    .container {
        width: 17.5rem;
        height: 13.125rem;
        margin: 0.75rem auto;
    }
    .draggable {
        width: 2.25rem;
        height: 2.25rem;
        font-size: 1.25rem;
    }
    .horizontal {
        /* Position will be set by JavaScript */
    }
    .vertical {
        /* Position will be set by JavaScript */
    }
    .combined-box {
        width: 3.5rem;
        height: 3.5rem;
        font-size: 1.25rem;
    }
}

@media (max-width: 375px) {
    .container {
        width: 15rem;
        height: 11.25rem;
        margin: 0.625rem auto;
    }
    .draggable {
        width: 2rem;
        height: 2rem;
        font-size: 1.1875rem;
    }
    .horizontal {
        /* Position will be set by JavaScript */
    }
    .vertical {
        /* Position will be set by JavaScript */
    }
    .combined-box {
        width: 3rem;
        height: 3rem;
        font-size: 1.1875rem;
    }
}