/* 基础样式 */
body {
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* 上传区域 */
.upload-area {
    border: 2px dashed #ccc;
    border-radius: 8px;
    background-color: #fafafa;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: #0d6efd;
    background-color: #f0f7ff;
}

.upload-area.dragover {
    border-color: #0d6efd;
    background-color: #e7f1ff;
}

/* 图片容器 */
.image-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
    overflow: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f8f9fa;
}

/* 标尺样式 */
.ruler {
    position: absolute;
    background-color: #f0f0f0;
    border-right: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
    z-index: 1000;
    font-size: 10px;
    color: #666;
}

.ruler-top {
    top: 0;
    left: 30px; /* 左侧标尺宽度 */
    height: 20px;
    border-left: 1px solid #ddd;
}

.ruler-left {
    top: 20px; /* 顶部标尺高度 */
    left: 0;
    width: 30px;
    border-top: 1px solid #ddd;
}

.ruler-top::before,
.ruler-left::before {
    content: '';
    position: absolute;
    background-color: #000;
}

.ruler-top::before {
    top: 0;
    left: 0;
    width: 1px;
    height: 20px;
}

.ruler-left::before {
    top: 0;
    left: 0;
    width: 20px;
    height: 1px;
}

/* 标尺刻度 */
.ruler-marks {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.ruler-mark {
    position: absolute;
    background-color: #666;
}

.ruler-top .ruler-mark {
    width: 1px;
    height: 5px;
    top: 15px;
}

.ruler-left .ruler-mark {
    width: 5px;
    height: 1px;
    left: 25px;
}

.ruler-label {
    position: absolute;
    font-size: 8px;
    color: #666;
}

.ruler-top .ruler-label {
    top: 2px;
    transform: translateX(-50%);
}

.ruler-left .ruler-label {
    left: 2px;
    top: 50%;
    transform: translateY(-50%);
}

/* 图片包装器 */
.image-wrapper {
    position: relative;
    margin-top: 20px; /* 顶部标尺高度 */
    margin-left: 30px; /* 左侧标尺宽度 */
}

#mainCanvas {
    display: block;
    max-width: 100%;
}

/* 分割线覆盖层 */
#splitLinesOverlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* 分割线样式 */
.split-line {
    position: absolute;
    background-color: #dc3545;
    pointer-events: none;
    z-index: 10;
}

.split-line.horizontal {
    left: 0;
    width: 100%;
    height: 2px;
}

.split-line.vertical {
    top: 0;
    width: 2px;
    height: 100%;
}

.split-line::before {
    content: '';
    position: absolute;
    background-color: rgba(220, 53, 69, 0.3);
}

.split-line.horizontal::before {
    top: -2px;
    left: 0;
    width: 100%;
    height: 6px;
}

.split-line.vertical::before {
    top: 0;
    left: -2px;
    width: 6px;
    height: 100%;
}

/* 预览网格 */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
    max-height: 400px;
    overflow-y: auto;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
}

.preview-item {
    position: relative;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
    background-color: white;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.preview-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 5;
}

.preview-item img {
    width: 100%;
    height: auto;
    display: block;
}

.preview-item .index {
    position: absolute;
    top: 5px;
    left: 5px;
    background-color: rgba(0,0,0,0.7);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
}

.preview-item .size {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background-color: rgba(0,0,0,0.7);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 10px;
}

/* 模式设置区域 */
.mode-settings {
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-bottom: 10px;
}

/* 图片信息 */
#imageInfo {
    font-size: 14px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 网格线 */
.grid-line {
    position: absolute;
    background-color: rgba(13, 110, 253, 0.5);
    pointer-events: none;
}

.grid-line.horizontal {
    left: 0;
    width: 100%;
    height: 1px;
}

.grid-line.vertical {
    top: 0;
    width: 1px;
    height: 100%;
}