/* ═══════════════════════════════════════════════════════
   Merge PDF Tool — tool-specific styling
   Shared workspace layout: tools/shared/pdf-workspace.css
   Card grid pattern aligned with jpg-to-pdf workspace.
   ═══════════════════════════════════════════════════════ */

:root {
    --mp-accent:       #e8554f;
    --mp-accent-light: #fff0ef;
    --mp-accent-hover: #d44a44;
    --mp-bg-muted:     #f5f5f7;
    --mp-border:       #e8e8ec;
    --mp-text:         #333;
    --mp-text-muted:   #888;
}

.merge-pdf__panel-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.merge-pdf__hint {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin: 0;
    padding: 0.75rem 0.85rem;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #0c5460;
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    border-radius: 8px;
}

.merge-pdf__hint .bi {
    flex-shrink: 0;
    margin-top: 0.1rem;
    font-size: 1rem;
}

.merge-pdf__stat {
    font-size: 0.88rem;
    color: var(--mp-text-muted);
    margin: 0;
}

.merge-pdf__grid {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    direction: rtl;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    align-content: start;
    gap: 14px;
    padding: 1rem 1.25rem 1.25rem;
}

.merge-pdf__grid.is-drag-over {
    background: var(--mp-accent-light);
    outline: 2px dashed var(--mp-accent);
    outline-offset: -6px;
}

.merge-pdf__card {
    position: relative;
    border: 2px solid var(--mp-border);
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
    cursor: grab;
    transition: border-color 0.2s, box-shadow 0.2s, opacity 0.15s;
}

.merge-pdf__card:hover {
    border-color: var(--mp-accent);
    box-shadow: 0 2px 10px rgba(232, 85, 79, 0.12);
}

.merge-pdf__card.is-dragging {
    opacity: 0.45;
    cursor: grabbing;
}

.merge-pdf__card.is-drag-over {
    border: 2px dashed var(--mp-accent);
    background-color: var(--mp-accent-light);
}

.merge-pdf__preview-area {
    padding: 12px 10px;
    background: var(--mp-bg-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
}

.merge-pdf__page-sheet {
    width: 100%;
    max-width: 110px;
    aspect-ratio: 210 / 297;
    background: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.merge-pdf__thumb {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.35s ease;
    pointer-events: none;
    display: block;
}

.merge-pdf__card-actions {
    position: absolute;
    top: 6px;
    inset-inline-start: 6px;
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 2;
}

.merge-pdf__card:hover .merge-pdf__card-actions {
    opacity: 1;
}

.merge-pdf__btn-action {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    font-size: 0.9rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.1s;
}

.merge-pdf__btn-rotate {
    background: rgba(232, 85, 79, 0.92);
    color: #fff;
}

.merge-pdf__btn-rotate:hover {
    background: var(--mp-accent-hover);
    transform: rotate(45deg);
}

.merge-pdf__btn-remove {
    background: rgba(120, 120, 120, 0.85);
    color: #fff;
}

.merge-pdf__btn-remove:hover {
    background: rgba(80, 80, 80, 0.95);
}

.merge-pdf__card-footer {
    padding: 5px 6px 6px;
    background: #fff;
    border-top: 1px solid #f0f0f0;
    text-align: center;
}

.merge-pdf__card-name {
    font-size: 0.72rem;
    color: var(--mp-text);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.merge-pdf__card-meta {
    font-size: 0.68rem;
    color: var(--mp-text-muted);
    display: block;
    margin-top: 2px;
}

.merge-pdf__clear-link {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.82rem;
    color: var(--mp-text-muted);
    text-decoration: underline;
    cursor: pointer;
}

.merge-pdf__clear-link:hover:not(:disabled) {
    color: var(--mp-accent);
}

.merge-pdf__clear-link:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

@media (max-width: 767px) {
    .merge-pdf__grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
        padding: 0.85rem;
    }
}