/* 网格系统样式 */

/* 固定配置 */
:root {
    --grid-margin-top: 40px;
    --grid-margin-right: 20px;
    --grid-margin-bottom: 20px;
    --grid-margin-left: 20px;
    --grid-columns: 4;
    --grid-rows: 3;
    --grid-gap: 30px;
}

/* 网格容器 - 全屏覆盖 */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none; /* 不阻挡下层交互 */
    z-index: 9999;
    display: none; /* 默认隐藏 */
}

.grid-overlay.visible {
    display: block;
}

/* 容器区域 */
.grid-container {
    position: absolute;
    top: var(--grid-margin-top);
    right: var(--grid-margin-right);
    bottom: var(--grid-margin-bottom);
    left: var(--grid-margin-left);
    pointer-events: none;
}

/* 页边距指示器 */
.grid-margins {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.grid-margin-line {
    position: absolute;
    background: rgba(255, 0, 0, 0.15);
}

.grid-margin-top {
    top: 0;
    left: 0;
    right: 0;
    height: var(--grid-margin-top);
    border-bottom: 1px dashed rgba(255, 0, 0, 0.3);
}

.grid-margin-right {
    top: 0;
    right: 0;
    bottom: 0;
    width: var(--grid-margin-right);
    border-left: 1px dashed rgba(255, 0, 0, 0.3);
}

.grid-margin-bottom {
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--grid-margin-bottom);
    border-top: 1px dashed rgba(255, 0, 0, 0.3);
}

.grid-margin-left {
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--grid-margin-left);
    border-right: 1px dashed rgba(255, 0, 0, 0.3);
}

/* 网格 */
.grid-layout {
    position: absolute;
    top: var(--grid-margin-top);
    right: var(--grid-margin-right);
    bottom: var(--grid-margin-bottom);
    left: var(--grid-margin-left);
    display: grid;
    grid-template-columns: repeat(var(--grid-columns), 1fr);
    grid-template-rows: repeat(var(--grid-rows), 1fr);
    gap: var(--grid-gap);
    pointer-events: none;
}

.grid-cell {
    background: rgba(255, 0, 0, 0.03);
    border: 1px solid rgba(255, 0, 0, 0.2);
    position: relative;
}

/* 标尺数字 */
.grid-cell::before {
    content: attr(data-index);
    position: absolute;
    top: 5px;
    left: 5px;
    font-size: 10px;
    color: rgba(255, 0, 0, 0.4);
    font-weight: 500;
}

/* 坐标原点指示器 */
.grid-origin-indicator {
    position: absolute;
    top: 0;
    left: 0;
    width: 30px;
    height: 30px;
    border-left: 2px solid #ff0000;
    border-top: 2px solid #ff0000;
    pointer-events: none;
}

.grid-origin-label {
    position: absolute;
    top: 5px;
    left: 35px;
    font-size: 11px;
    color: #ff0000;
    font-weight: bold;
}

/* 网格信息面板 */
.grid-info-panel {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border: 1px solid rgba(255, 0, 0, 0.3);
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 0;
    z-index: 10000;
    min-width: 220px;
    pointer-events: auto;
    user-select: none;
    display: none; /* 默认隐藏 */
}

.grid-info-panel.visible {
    display: block;
}

/* 拖拽手柄 */
.grid-panel-header {
    padding: 10px 15px;
    background: #f8f8f8;
    border-bottom: 1px solid #eee;
    cursor: move;
    border-radius: 6px 6px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.grid-panel-header:hover {
    background: #f0f0f0;
}

.grid-panel-title {
    font-size: 12px;
    font-weight: 600;
    color: #333;
}

.grid-panel-close {
    width: 16px;
    height: 16px;
    background: #ff5555;
    border-radius: 50%;
    cursor: pointer;
    transition: opacity 0.2s;
}

.grid-panel-close:hover {
    opacity: 0.8;
}

/* 面板内容 */
.grid-panel-content {
    padding: 15px;
}

.grid-info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 12px;
}

.grid-info-label {
    color: #666;
}

.grid-info-value {
    font-weight: 600;
    color: #333;
    font-family: 'SF Mono', monospace;
}

.grid-info-value.highlight {
    color: #ff0000;
}

.grid-divider {
    height: 1px;
    background: #eee;
    margin: 10px 0;
}

/* 切换按钮 */
.grid-toggle-btn {
    width: 100%;
    padding: 6px;
    background: white;
    border: 1px solid #ff0000;
    color: #ff0000;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.2s;
}

.grid-toggle-btn:hover {
    background: #ff0000;
    color: white;
}

.grid-toggle-btn.active {
    background: #ff0000;
    color: white;
}

/* 吸附点可视化（调试用，默认隐藏） */
.grid-snap-point {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(0, 0, 255, 0.3);
    border-radius: 50%;
    margin-left: -3px;
    margin-top: -3px;
    pointer-events: none;
    display: none;
}

.grid-overlay.show-snap-points .grid-snap-point {
    display: block;
}

/* 鼠标坐标追踪指示器 */
.grid-mouse-indicator {
    position: fixed;
    background: rgba(255, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    font-family: 'SF Mono', monospace;
    pointer-events: none;
    z-index: 10001;
    display: none;
}

.grid-mouse-indicator.visible {
    display: block;
}