#merge-section {
    position: relative;
}

.merge-card {
    background: var(--card-bg, #1e2130);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
}

.merge-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.merge-header h5 {
    margin: 0;
}

.merge-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pdf-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 0.5rem;
}

.pdf-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
    align-items: center;
    background: var(--light-bg, #252837);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
}

.pdf-item-main {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.pdf-order {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.pdf-meta {
    min-width: 0;
}

.pdf-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-sub {
    font-size: 0.82rem;
    color: var(--light-text);
}

.pdf-controls {
    display: flex;
    gap: 0.4rem;
}

.pdf-controls .btn {
    padding: 0.3rem 0.5rem;
}

.merge-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.9rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.9rem;
}

.summary-text {
    color: var(--light-text);
    font-size: 0.92rem;
}

.merge-status {
    margin-top: 0.8rem;
    font-size: 0.9rem;
    color: var(--light-text);
}

@media (max-width: 768px) {
    .pdf-item {
        grid-template-columns: 1fr;
    }

    .pdf-controls {
        justify-content: flex-end;
    }

    .merge-footer {
        flex-direction: column;
        align-items: stretch;
    }

    #merge-btn {
        width: 100%;
    }
}