/* ===== 思维导图 mindmap.css ===== */
/* 占满屏幕，覆盖全站布局宽度限制 */
.page-mindmap-full { overflow: hidden; overscroll-behavior: none; }
.mm-app {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    background: var(--mm-bg, #f6f7f9);
    color: var(--mm-fg, #1f2329);
    font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    -webkit-user-select: none;
    user-select: none;
}

/* 主题变量 */
.mm-app.theme-classic { --mm-bg:#f6f7f9; --mm-fg:#1f2329; --mm-bar:#ffffff; --mm-bar-bd:#e8eaed; --mm-node:#ffffff; --mm-node-bd:#c9ced6; --mm-node-fg:#1f2329; --mm-edge:#9aa3af; --mm-grid:#e7e9ee; --mm-sel:#2f7bff; --mm-panel:#ffffff; }
.mm-app.theme-dark { --mm-bg:#14171c; --mm-fg:#e6e8ec; --mm-bar:#1c2027; --mm-bar-bd:#2a2f38; --mm-node:#232831; --mm-node-bd:#39404c; --mm-node-fg:#e6e8ec; --mm-edge:#5b6472; --mm-grid:#20252e; --mm-sel:#5aa2ff; --mm-panel:#1c2027; }
.mm-app.theme-sepia { --mm-bg:#f3ecdc; --mm-fg:#3a3329; --mm-bar:#fbf6ea; --mm-bar-bd:#e6dcc2; --mm-node:#fffdf7; --mm-node-bd:#d8c9a6; --mm-node-fg:#3a3329; --mm-edge:#b3a374; --mm-grid:#ece3cf; --mm-sel:#b6822c; --mm-panel:#fbf6ea; }

/* ============ 顶部工具栏 ============ */
.mm-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--mm-bar);
    border-bottom: 1px solid var(--mm-bar-bd);
    flex: 0 0 auto;
    z-index: 20;
    flex-wrap: wrap;
}
.mm-bar-left { display: flex; align-items: center; gap: 8px; }
.mm-logo { font-size: 20px; }
.mm-doc-name {
    border: 1px solid transparent;
    background: transparent;
    font-size: 15px;
    font-weight: 600;
    color: var(--mm-fg);
    padding: 5px 8px;
    border-radius: 8px;
    width: 180px;
    max-width: 40vw;
}
.mm-doc-name:hover, .mm-doc-name:focus { border-color: var(--mm-bar-bd); outline: none; background: var(--mm-bg); }
.mm-bar-mid { display: flex; align-items: center; gap: 10px; margin: 0 auto; }
.mm-bar-right { display: flex; align-items: center; gap: 6px; }

.mm-seg { display: inline-flex; border: 1px solid var(--mm-bar-bd); border-radius: 9px; overflow: hidden; }
.mm-seg button {
    border: 0; background: transparent; color: var(--mm-fg);
    padding: 6px 9px; font-size: 15px; cursor: pointer; line-height: 1;
}
.mm-seg button + button { border-left: 1px solid var(--mm-bar-bd); }
.mm-seg button:hover { background: var(--mm-bg); }
.mm-seg button.is-active { background: var(--mm-sel); color: #fff; }

.mm-btn {
    border: 1px solid var(--mm-bar-bd);
    background: var(--mm-bg);
    color: var(--mm-fg);
    border-radius: 9px;
    padding: 7px 10px;
    font-size: 14px;
    cursor: pointer;
    line-height: 1;
}
.mm-btn:hover { border-color: var(--mm-sel); }
.mm-btn:disabled { opacity: .4; cursor: default; }
.mm-btn-pri { background: var(--mm-sel); color: #fff; border-color: var(--mm-sel); font-weight: 600; }
.mm-dd { position: relative; }
.mm-dd-menu {
    position: absolute; right: 0; top: calc(100% + 6px);
    background: var(--mm-panel); border: 1px solid var(--mm-bar-bd);
    border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.14);
    padding: 6px; min-width: 150px; z-index: 30;
}
.mm-dd-menu button {
    display: block; width: 100%; text-align: left;
    border: 0; background: transparent; color: var(--mm-fg);
    padding: 8px 10px; border-radius: 7px; cursor: pointer; font-size: 14px;
}
.mm-dd-menu button:hover { background: var(--mm-bg); }

/* ============ 画布 ============ */
.mm-stage { position: relative; flex: 1 1 auto; overflow: hidden; touch-action: none; }
.mm-svg { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; display: block; touch-action: none; -webkit-touch-callout: none; }
.mm-svg.mm-grabbing { cursor: grabbing; }
.mm-svg.mm-panning { cursor: grabbing; }

.mm-node-box { cursor: default; }
.mm-node-rect {
    fill: var(--mm-node);
    stroke: var(--mm-node-bd);
    stroke-width: 1.5;
    rx: 10; ry: 10;
    transition: stroke .12s;
}
.mm-node-text { fill: var(--mm-node-fg); font-size: 14px; dominant-baseline: middle; }
.mm-node-box.is-selected .mm-node-rect { stroke: var(--mm-sel); stroke-width: 2.5; }
.mm-node-box.is-search .mm-node-rect { stroke: #ff8a00; stroke-width: 2.5; }
.mm-node-note-dot { fill: #ff8a00; }

.mm-edge { fill: none; stroke: var(--mm-edge); stroke-width: 2; }
.mm-toggle {
    cursor: pointer;
}
.mm-toggle circle { fill: var(--mm-bg); stroke: var(--mm-edge); stroke-width: 1.5; }
.mm-toggle text { fill: var(--mm-fg); font-size: 13px; text-anchor: middle; dominant-baseline: central; }

/* ============ 节点浮动工具条 ============ */
.mm-node-tools {
    position: absolute; z-index: 25;
    display: flex; gap: 4px;
    background: var(--mm-panel); border: 1px solid var(--mm-bar-bd);
    border-radius: 10px; padding: 4px; box-shadow: 0 6px 18px rgba(0,0,0,.16);
}
.mm-node-tools button {
    border: 0; background: transparent; color: var(--mm-fg);
    padding: 6px 9px; border-radius: 7px; cursor: pointer; font-size: 13px;
}
.mm-node-tools button:hover { background: var(--mm-bg); }

/* 编辑浮层 */
.mm-editor {
    position: absolute; z-index: 26;
    border: 2px solid var(--mm-sel); border-radius: 10px;
    padding: 8px 10px; resize: none; outline: none;
    font-family: inherit; font-size: 14px; line-height: 20px;
    background: var(--mm-node); color: var(--mm-node-fg);
    box-shadow: 0 8px 22px rgba(0,0,0,.2);
    overflow: hidden;
}

/* ============ 缩放 ============ */
.mm-zoom {
    position: absolute; left: 14px; bottom: 14px; z-index: 15;
    display: flex; align-items: center; gap: 2px;
    background: var(--mm-panel); border: 1px solid var(--mm-bar-bd);
    border-radius: 10px; padding: 4px; box-shadow: 0 4px 14px rgba(0,0,0,.1);
}
.mm-zoom button { border: 0; background: transparent; color: var(--mm-fg); cursor: pointer; padding: 6px 9px; border-radius: 7px; font-size: 15px; }
.mm-zoom button:hover { background: var(--mm-bg); }
#mmZoomLabel { font-size: 12px; min-width: 42px; display: inline-block; text-align: center; }

/* ============ 右侧面板 ============ */
.mm-panel {
    position: absolute; top: 0; right: 0; bottom: 0; width: 300px; max-width: 86vw;
    background: var(--mm-panel); border-left: 1px solid var(--mm-bar-bd);
    display: flex; flex-direction: column; z-index: 18; box-shadow: -6px 0 18px rgba(0,0,0,.08);
}
.mm-panel-head { display: flex; align-items: center; gap: 6px; padding: 10px; border-bottom: 1px solid var(--mm-bar-bd); }
.mm-search { flex: 1; border: 1px solid var(--mm-bar-bd); background: var(--mm-bg); color: var(--mm-fg); border-radius: 8px; padding: 7px 9px; font-size: 14px; outline: none; }
.mm-search:focus { border-color: var(--mm-sel); }
.mm-panel-close { border: 0; background: transparent; color: var(--mm-fg); font-size: 16px; cursor: pointer; padding: 4px 6px; }
.mm-outline { flex: 1; overflow: auto; padding: 8px; }
.mm-outline-item {
    padding: 7px 8px; border-radius: 8px; cursor: pointer; font-size: 13px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    display: flex; align-items: center; gap: 6px;
}
.mm-outline-item:hover { background: var(--mm-bg); }
.mm-outline-item.is-hit { background: #ffe9d0; color: #7a3d00; }
.mm-outline-item .mm-oi-dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; }
.mm-outline-empty { color: var(--mm-edge); font-size: 13px; padding: 12px; text-align: center; }

/* ============ 配色浮层 ============ */
.mm-pop {
    position: absolute; z-index: 30;
    background: var(--mm-panel); border: 1px solid var(--mm-bar-bd);
    border-radius: 12px; padding: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.18);
}
.mm-color-list { display: grid; grid-template-columns: repeat(6, 22px); gap: 6px; }
.mm-color-list button { width: 22px; height: 22px; border-radius: 50%; border: 2px solid rgba(0,0,0,.12); cursor: pointer; }
.mm-color-clear { margin-top: 8px; border: 1px solid var(--mm-bar-bd); background: var(--mm-bg); color: var(--mm-fg); border-radius: 7px; padding: 6px 8px; cursor: pointer; width: 100%; font-size: 13px; }

/* ============ 弹窗 / 提示 ============ */
.mm-mask { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; z-index: 50; }
.mm-modal { background: var(--mm-panel); border-radius: 14px; width: 380px; max-width: 92vw; overflow: hidden; box-shadow: 0 18px 50px rgba(0,0,0,.3); }
.mm-modal-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--mm-bar-bd); }
.mm-modal-title { margin: 0; font-size: 16px; }
.mm-modal-close { border: 0; background: transparent; color: var(--mm-fg); font-size: 18px; cursor: pointer; }
.mm-modal-body { padding: 12px 16px 16px; }
.mm-help { display: grid; grid-template-columns: 1fr; gap: 8px; font-size: 13px; }
.mm-help kbd {
    background: var(--mm-bg); border: 1px solid var(--mm-bar-bd); border-bottom-width: 2px;
    border-radius: 5px; padding: 1px 6px; font-size: 12px; font-family: ui-monospace, monospace;
}
.mm-help-tip { margin-top: 6px; color: var(--mm-edge); line-height: 1.6; }

.mm-toast {
    position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
    background: rgba(0,0,0,.82); color: #fff; padding: 8px 14px; border-radius: 20px;
    font-size: 13px; z-index: 40; pointer-events: none;
}

/* ============ 移动端「更多」折叠菜单 ============ */
.mm-more-btn { display: none; }
.mm-more-menu { display: none; }
.mm-more-menu.is-open {
    display: block; position: absolute; z-index: 35;
    top: 54px; right: 8px; left: 8px;
    background: var(--mm-panel); border: 1px solid var(--mm-bar-bd);
    border-radius: 16px; padding: 14px; box-shadow: 0 16px 44px rgba(0,0,0,.26);
    max-height: calc(100vh - 70px); overflow: auto;
}
.mm-more-inner { display: flex; flex-direction: column; gap: 14px; }
.mm-more-block { display: flex; flex-direction: column; gap: 8px; }
.mm-more-label { font-size: 12px; color: var(--mm-edge); letter-spacing: .04em; }
.mm-more-menu .mm-bar-mid { display: contents; }
.mm-more-menu .mm-seg { display: flex; width: 100%; }
.mm-more-menu .mm-seg button { flex: 1 1 0; padding: 11px 4px; font-size: 16px; }
.mm-more-actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.mm-more-actions .mm-btn { width: 100%; padding: 12px 8px; font-size: 15px; justify-content: center; }
.mm-more-actions .mm-btn-pri { grid-column: 1 / -1; }
/* 折叠菜单内的下拉子菜单改为内联展开，避免被裁剪 */
.mm-more-menu .mm-dd-menu {
    position: static; box-shadow: none; border: 1px solid var(--mm-bar-bd);
    margin-top: 6px; min-width: 0; width: 100%;
}

/* ============ 平板（窄） ============ */
@media (max-width: 1024px) {
    .mm-bar { gap: 8px; padding: 7px 10px; }
    .mm-bar-mid { gap: 8px; }
    .mm-seg button { padding: 6px 8px; font-size: 14px; }
    .mm-btn { padding: 7px 9px; font-size: 13px; }
    .mm-doc-name { width: 150px; }
    .mm-zoom button { padding: 7px 10px; }
}

/* ============ 手机 / 小平板竖屏 ============ */
@media (max-width: 768px) {
    .mm-bar { flex-wrap: wrap; gap: 6px 8px; padding: 6px 8px; }
    .mm-bar-left { flex: 1 1 auto; min-width: 0; gap: 6px; }
    .mm-doc-name { width: auto; max-width: none; flex: 1 1 auto; min-width: 0; }
    .mm-bar-mid { display: none; }               /* 内容已移入「更多」菜单 */
    .mm-bar-right { flex: 0 0 auto; gap: 4px; }
    .mm-more-btn {
        display: inline-flex; align-items: center; justify-content: center;
        font-size: 18px; padding: 7px 12px;
    }
    .mm-bar-right .mm-btn { padding: 7px 8px; font-size: 14px; }
    .mm-panel { width: 100%; max-width: 100%; }

    /* 浮动节点工具：允许换行并限制不超出屏幕 */
    .mm-node-tools { flex-wrap: wrap; max-width: 92vw; gap: 3px; padding: 3px; }
    .mm-node-tools button { padding: 7px 8px; font-size: 13px; }

    /* 编辑浮层字号提高到 16px，规避 iOS 聚焦自动放大 */
    .mm-editor { font-size: 16px !important; line-height: 22px !important; }

    /* 缩放控制更大触摸热区 */
    .mm-zoom { left: 8px; bottom: 8px; }
    .mm-zoom button { padding: 9px 12px; font-size: 17px; }
    #mmZoomLabel { min-width: 46px; font-size: 13px; }

    /* 配色浮层适配窄屏 */
    .mm-pop { max-width: 92vw; }
    .mm-color-list { grid-template-columns: repeat(6, 1fr); }
    .mm-color-list button { width: 100%; height: auto; aspect-ratio: 1 / 1; }

    /* 弹窗贴合手机 */
    .mm-modal { width: 100%; max-width: 94vw; }
    .mm-help { font-size: 14px; }

    /* 提示条适配安全区 */
    .mm-toast { bottom: max(18px, env(safe-area-inset-bottom)); max-width: 90vw; }
}

/* ============ 小屏手机 ============ */
@media (max-width: 480px) {
    .mm-logo { display: none; }
    .mm-bar-left { gap: 4px; }
    .mm-bar-right .mm-btn { padding: 6px 7px; }
    .mm-more-actions { grid-template-columns: 1fr; }
    .mm-more-actions .mm-btn-pri { grid-column: auto; }
}

/* ============ 横屏矮高度（手机横放） ============ */
@media (max-height: 480px) and (orientation: landscape) {
    .mm-more-menu.is-open { top: 48px; max-height: 72vh; }
    .mm-zoom { bottom: 6px; }
}