/* === Toolbar === */
#toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    min-height: var(--toolbar-height);
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--gray-200);
    margin: 0 4px;
}

#sheet-size-select {
    padding: 6px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    font-family: var(--font);
    background: #fff;
    cursor: pointer;
}

.toolbar-checkbox {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--gray-600);
    cursor: pointer;
    white-space: nowrap;
}

.toolbar-checkbox input[type="checkbox"] {
    accent-color: var(--primary);
}

.toolbar-input {
    width: 50px;
    padding: 4px 6px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 12px;
    text-align: center;
}

/* Alignment tools in toolbar */
.alignment-tools {
    display: flex;
    gap: 2px;
}

.alignment-tools button {
    padding: 4px 6px;
}

/* === Indicators Panel === */
#indicators-panel {
    padding: 6px 12px;
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
}

.indicator-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 16px;
    font-size: 12px;
    cursor: pointer;
}

.indicator-checkbox input {
    accent-color: var(--primary);
}

#resolution-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
    padding-left: 4px;
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--gray-600);
}

.legend-color {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

/* === Canvas Area === */
#canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--gray-100);
}

/* Canvas Wrapper with Rulers */
#canvas-wrapper {
    flex: 1;
    display: grid;
    grid-template-columns: 30px 1fr;
    grid-template-rows: 30px 1fr;
    overflow: hidden;
}

#ruler-corner {
    background: var(--gray-200);
    border-right: 1px solid var(--gray-300);
    border-bottom: 1px solid var(--gray-300);
}

#ruler-horizontal {
    background: #fff;
    border-bottom: 1px solid var(--gray-300);
    display: block;
    width: 100%;
    height: 30px;
}

#ruler-vertical {
    background: #fff;
    border-right: 1px solid var(--gray-300);
    display: block;
    width: 30px;
}

#canvas-scroll-container {
    overflow: auto;
    position: relative;
    background-image:
        linear-gradient(45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(-45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e0e0e0 75%),
        linear-gradient(-45deg, transparent 75%, #e0e0e0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-color: #f0f0f0;
}

#canvas-container {
    position: relative;
    display: inline-block;
    margin: 20px;
}

#sheet-canvas {
    border: 1px solid var(--gray-300);
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* === Zoom Controls === */
#zoom-controls {
    position: absolute;
    bottom: 60px;
    right: calc(var(--right-sidebar-width) + 20px);
    display: flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    padding: 6px 12px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    z-index: 10;
}

#zoom-level,
#zoom-percentage {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    min-width: 40px;
    text-align: center;
}

/* === Bottom Bar === */
#bottom-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #fff;
    border-top: 1px solid var(--gray-200);
}