/* =========================================================
   FCE – Panzoom Image
   ========================================================= */

.fce-panzoom-wrap {
    position: relative;
    display: block;
    -webkit-user-select: none;
    user-select: none;
    --fce-pz-btn-size: 36px;
}

/* ── Viewport (khung chứa ảnh) ───────────────────────────── */
.fce-panzoom-viewport {
    position: relative;
    overflow: hidden;
    line-height: 0;
    touch-action: none;
    background: #f5f5f5;
    /* Cursor mũi tên 4 góc khi hover */
    cursor: move;
}

/* Khi đang kéo: cursor grabbing */
.fce-panzoom-viewport.is-dragging {
    cursor: grabbing;
}

/* Khi scale = 1 chưa zoom: cursor mặc định */
.fce-panzoom-wrap[data-scale="1.00"] .fce-panzoom-viewport {
    cursor: default;
}

/* ── Ảnh ────────────────────────────────────────────────── */
.fce-panzoom-img {
    display: block;
    width: 100%;
    height: auto;
    transform-origin: 0 0;
    will-change: transform;
    pointer-events: none;
    /* Transition mượt khi zoom bằng nút */
    transition: transform 0.25s ease;
}

/* Tắt transition khi đang kéo hoặc pinch (cần instant follow) */
.fce-panzoom-viewport.is-dragging   .fce-panzoom-img,
.fce-panzoom-viewport.is-pinching   .fce-panzoom-img {
    transition: none;
}

/* ── Nút điều khiển – overlay góc phải dưới ─────────────── */
.fce-panzoom-controls {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: flex;
    flex-direction: column;   /* + trên, − dưới */
    gap: 4px;
    z-index: 10;
}

/* ── Nút ────────────────────────────────────────────────── */
.fce-pz-btn {
    width: var(--fce-pz-btn-size);
    height: var(--fce-pz-btn-size);
    padding: 0;
    border: 1px solid rgba(0, 0, 0, .18);
    border-radius: 4px;
    background: rgba(255, 255, 255, .85);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    color: #333;
    font-size: calc(var(--fce-pz-btn-size) * .5);
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
        margin-bottom: 0px;
    justify-content: center;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .15);
    transition: background .15s, box-shadow .15s;
}

.fce-pz-btn:hover {
    background: rgba(255, 255, 255, .97);
    box-shadow: 0 2px 6px rgba(0, 0, 0, .2);
}

.fce-pz-btn:active {
    background: #e4e4e4;
}

/* ── Placeholder (builder preview khi chưa chọn ảnh) ────── */
.fce-panzoom-placeholder {
    background: #f0f0f0;
    padding: 40px;
    text-align: center;
    color: #aaa;
    font-size: 14px;
}