/* 画笔工具样式 */

/* 画布容器 */
#drawingCanvasContainer {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9000;
    display: none;
    background: transparent;
    pointer-events: none; /* 允许穿透到下层 */
}

#drawingCanvasContainer.active {
    display: block;
}

/* 画布主体 - 全屏覆盖 */
#drawingCanvasWrapper {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    display: flex;
    flex-direction: column;
    overflow: visible;
}

/* 工具栏 - 浮动在左上角 */
#drawingToolbar {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    padding: 6px 8px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    z-index: 1;
    pointer-events: auto; /* 工具栏可以交互 */
}

.drawing-tool-btn {
    padding: 4px 8px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.drawing-tool-btn:hover {
    background: #f3f4f6;
    border-color: #9ca3af;
}

.drawing-tool-btn.active {
    background: #3b82f6;
    color: #fff;
    border-color: #3b82f6;
}

.drawing-tool-btn svg {
    width: 14px;
    height: 14px;
}

/* 工具组 */
.drawing-tool-group {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 6px;
    border-left: 1px solid #e5e7eb;
}

.drawing-tool-group:first-child {
    border-left: none;
}

/* 颜色选择器 */
.drawing-color-picker {
    width: 30px;
    height: 24px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    cursor: pointer;
}

/* 笔刷大小选择器 */
.drawing-brush-size {
    display: flex;
    align-items: center;
    gap: 4px;
}

.drawing-brush-size input {
    width: 50px;
}

.drawing-brush-size-label {
    font-size: 11px;
    color: #666;
}

/* 画布区域 - 全屏覆盖 */
#drawingCanvasArea {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#drawingCanvas {
    display: block;
    background: transparent; /* 透明背景，可以看到页面内容 */
    position: absolute;
    left: 0;
    top: 0;
}

/* 画笔模式的鼠标光标 */
#drawingCanvas.pen-cursor {
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%23ff0000" stroke-width="2"><path d="M12 19l7-7 3 3-7 7-3-3z"/><path d="M18 13l-1.5-7.5L2 2l3.5 14.5L13 18l5-5z"/><path d="M2 2l7.586 7.586"/></svg>'), auto;
}

/* 橡皮擦模式的鼠标光标 - 动态大小（通过JS设置） */


/* 历史记录指示器 */
.drawing-history-indicator {
    font-size: 10px;
    color: #666;
    padding: 0 4px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    #drawingToolbar {
        top: 5px;
        left: 5px;
        right: 5px;
        gap: 6px;
        padding: 8px 12px;
    }
    
    .drawing-tool-group {
        border-left: none;
        border-top: 1px solid #e5e7eb;
        padding: 6px 0;
    }
    
}