.dual-grid-container {
    margin: 15px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.dual-grid-title {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--accent-tertiary);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
    text-align: center;
    width: 100%;
}

.dual-grid {
    display: grid;
    gap: 2px;
    background: var(--bg-medium);
    padding: 4px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    width: fit-content;
}

.dual-grid-tile {
    position: relative;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.dual-grid-tile:hover {
    border-color: var(--accent-tertiary);
    box-shadow: 0 0 4px rgba(0, 217, 255, 0.3);
}

.dual-grid-tile.selected {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 6px var(--border-glow);
}

.dual-grid-tile.has-frame {
    border: 2px solid var(--accent-secondary);
    box-shadow: 0 0 4px var(--border-glow);
}

.dual-grid-canvas {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.dual-grid-tile-info {
    position: absolute;
    bottom: 2px;
    right: 2px;
    font-size: 8px;
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.5);
    padding: 1px 3px;
    border-radius: 2px;
}

.dual-grid-controls {
    margin-top: 10px;
    display: flex;
    gap: 10px;
    align-items: center;
    width: 100%;
}

.tile-size-control {
    display: flex;
    align-items: center;
    gap: 5px;
    flex: 1;
}

.tile-size-input {
    width: 60px;
    padding: 4px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
}

.tile-size-label {
    font-size: 11px;
    color: var(--text-secondary);
}

.dual-grid-apply-btn {
    padding: 4px 8px;
    font-size: 10px;
}

.frame-canvases-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    display: none;
}

.frame-canvas {
    position: absolute;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    border: 2px solid var(--accent-secondary);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.frame-canvas.visible {
    opacity: 1;
}