.canvas_outer .toolbar {
    display: flex; gap: 12px; align-items: center;
    padding: 8px 12px; background: #f4f4f6; border-bottom: 1px solid #ccc;
    flex-wrap: wrap; user-select: none;
}
.canvas_outer .toolbar .group { display: flex; gap: 4px; align-items: center; padding: 0 8px; border-right: 1px solid #ddd; }
.canvas_outer .toolbar .group:last-child { border-right: none; }
.canvas_outer .toolbar label { font-size: 12px; color: #555; }
.canvas_outer .toolbar select, .canvas_outer .toolbar button {
    font-size: 13px; padding: 4px 8px; border: 1px solid #bbb; border-radius: 4px;
    background: #fff; cursor: pointer;
}
.canvas_outer .toolbar button:hover { background: #eef; }
.canvas_outer .toolbar .btn-group { display: inline-flex; border: 1px solid #bbb; border-radius: 4px; overflow: hidden; }
.canvas_outer .toolbar .btn-group .tbtn {
    font-size: 13px; padding: 4px 8px; border: none; border-right: 1px solid #ddd;
    background: #fff; cursor: pointer; border-radius: 0;
}
.canvas_outer .toolbar .btn-group .tbtn:last-child { border-right: none; }
.canvas_outer .toolbar .btn-group .tbtn:hover { background: #eef; }
.canvas_outer .toolbar .btn-group .tbtn.selected { background: #1976d2; color: #fff; }
.canvas_outer .toolbar .btn-group.icon-type .tbtn { font-size: 16px; padding: 2px 6px; }
.canvas_outer .toolbar .btn-group.color-type .tbtn.swatch {
    width: 22px; height: 22px; padding: 0; border-right: 1px solid #ddd;
}
.canvas_outer .toolbar .btn-group.color-type .tbtn.swatch:hover {
    box-shadow: inset 0 0 0 2px rgba(255,255,255,0.4);
}
.canvas_outer .toolbar .btn-group.color-type .tbtn.swatch.selected {
    box-shadow: inset 0 0 0 2px #fff, inset 0 0 0 3px #222;
}

.collapsed {
    display: none !important;
}

.canvas {
    width: 100%;
}
.canvas_outer .canvas-area {
    position: relative;
    width: 100%;
    min-height: 50vh;

    background: #fafafa;
    background-image:
            linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
    background-size: 20px 20px;
    overflow: hidden;
    touch-action: none;
}
.canvas_outer .canvas-area.panning { cursor: grabbing; }
.canvas_outer .canvas-area.panning .shape { cursor: grabbing; }
.canvas_outer .canvas-content {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    transform-origin: 0 0;
}
.canvas_outer .svg-layer {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    overflow: visible;
}
.canvas_outer .svg-layer .arrow-hit { pointer-events: stroke; cursor: pointer; }
.canvas_outer .svg-layer g.selected .arrow-line {
    stroke-width: 3;
    stroke-dasharray: 6 3;
}
.canvas_outer .svg-layer .arrow-handle {
    fill: #1976d2;
    stroke: #fff;
    stroke-width: 2;
    display: none;
}
.canvas_outer .svg-layer g.selected .arrow-handle {
    display: inline;
    pointer-events: all;
    cursor: move;
}
.canvas_outer .svg-layer .arrow-handle:hover { fill: #1565c0; }
.shape {
    position: absolute; min-width: 40px; min-height: 30px;
    display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 6px; cursor: move;
    user-select: none;
}
.shape.selected { outline: 2px dashed #1976d2; outline-offset: 2px; }
.shape .label {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    white-space: pre-wrap; overflow: hidden; word-break: break-word;
    outline: none;
}
.shape.button-shape {
    background: #fff; border: 2px solid #444; border-radius: 12px;
    color: #222; font-weight: 500;
}
.shape.rectangle-shape {
    background: #fff; border: 2px solid #444; border-radius: 0;
    color: #222;
}
.shape.circle-shape {
    background: #fff; border: 2px solid #444; border-radius: 50%;
    color: #222;
}
.shape.icon-shape {
    background: transparent; border: none; font-size: 48px; line-height: 1;
}
.shape.icon-shape .label { font-size: inherit; }
.shape.border-shape {
    background: rgba(255,255,200,0.18);
    border: 2px dashed #888; border-radius: 8px;
    align-items: flex-start; justify-content: flex-start;
    padding: 4px 8px; color: #555; font-style: italic;
}
.shape.border-shape .label {
    display: block; height: auto; text-align: left; font-size: 13px;
}
.shape.image-shape {
    background: transparent; border: 1px solid transparent; padding: 0;
}
.shape.image-shape img {
    width: 100%; height: 100%; object-fit: contain; pointer-events: none;
}
.resize-handle {
    position: absolute; right: -6px; bottom: -6px;
    width: 14px; height: 14px; background: #1976d2; border: 2px solid #fff;
    border-radius: 3px; cursor: nwse-resize; opacity: 0; transition: opacity 0.15s;
}
.shape:hover .resize-handle, .shape.selected .resize-handle { opacity: 1; }
.delete-btn {
    position: absolute; top: -10px; right: -10px;
    width: 20px; height: 20px; border-radius: 50%;
    background: #d32f2f; color: #fff; border: 2px solid #fff;
    font-size: 12px; line-height: 16px; text-align: center; cursor: pointer;
    opacity: 0; transition: opacity 0.15s;
}
.shape:hover .delete-btn, .shape.selected .delete-btn { opacity: 1; }
.canvas_outer .drag-preview {
    position: absolute; border: 2px dashed #1976d2; background: rgba(25,118,210,0.08);
    pointer-events: none; display: none;
}
.canvas_outer .json-dialog {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background: #fff; border: 1px solid #888; border-radius: 8px;
    padding: 16px; width: 600px; max-width: 90vw; height: 70vh;
    display: none; flex-direction: column; gap: 8px; z-index: 1000;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.canvas_outer .json-dialog textarea { flex: 1; width: 100%; font-family: monospace; font-size: 12px; }
.canvas_outer .json-dialog .actions { display: flex; gap: 8px; justify-content: flex-end; }
.canvas_outer .backdrop {
    position: fixed; inset: 0; background: rgba(0,0,0,0.3); display: none; z-index: 999;
}
.canvas_outer .hint { font-size: 12px; color: #777; margin-left: auto; }

.canvas_content {
    display: none;
}