/* ============================================================================
   材料拆解台 · 关系图谱 —— 视图样式
   颜色一律走 css/app.css 的设计令牌，深色模式自动跟随；
   画布内的色值由 JS 从同一批变量解析（画布里不能写 var(--x)）。
   ========================================================================== */

.gp-page {
  height: calc(100vh - var(--topbar-h));
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ------------------------------------------------------------------ 工具栏 */

.gp-toolbar {
  flex: none;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  padding: 10px 16px;
}

.gp-toolbar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.gp-tb-label {
  font-size: 12px;
  color: var(--muted);
  flex: none;
}

.gp-seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface-2);
  flex: none;
}

.gp-seg .seg-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 12.5px;
  padding: 5px 12px;
  cursor: pointer;
  white-space: nowrap;
}

.gp-seg .seg-btn + .seg-btn {
  border-left: 1px solid var(--line);
}

.gp-seg .seg-btn:hover {
  background: var(--hover-tint);
}

.gp-seg .seg-btn.on {
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}

.gp-edge-toggles {
  display: inline-flex;
  gap: 6px;
  flex: none;
}

.chip.gp-edge {
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface);
  transition: background .16s, color .16s, border-color .16s;
}

.chip.gp-edge:hover {
  border-color: var(--faint-line);
  color: var(--ink-2);
}

.chip.gp-edge.on {
  background: var(--accent-soft);
  border-color: var(--accent-line);
  color: var(--accent-dark);
  font-weight: 600;
}

.chip.gp-local {
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface);
}

.chip.gp-local:hover {
  color: var(--ink-2);
  border-color: var(--faint-line);
}

.chip.gp-local.on {
  background: var(--accent-soft);
  border-color: var(--accent-line);
  color: var(--accent-dark);
  font-weight: 600;
}

.gp-search-wrap {
  flex: none;
  width: 210px;
}

.gp-search {
  width: 100%;
  height: 32px;
  font-size: 13px;
}

.gp-depth {
  /* .input 里有 width:100%，不覆盖掉的话下拉框会占满一整行 */
  width: auto;
  height: 32px;
  font-size: 12.5px;
  padding: 0 6px;
  flex: none;
}

.gp-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
}

/* ------------------------------------------------------------------ 主体 */

.gp-body {
  flex: 1;
  min-height: 0;
  display: flex;
}

.gp-canvas-wrap {
  flex: 1;
  min-width: 0;
  position: relative;
  overflow: hidden;
  /* 工作台观感：极淡的网格底，像一张摊开的图纸 */
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 1px 1px, var(--line-soft) 1px, transparent 0);
  background-size: 26px 26px;
}

.gp-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

.gp-canvas:active {
  cursor: grabbing;
}

/* ------------------------------------------------------------------ HUD / 图例 */

.gp-hud {
  position: absolute;
  top: 10px;
  left: 12px;
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 11.5px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 5px 11px;
  pointer-events: none;
  box-shadow: var(--shadow);
}

.gp-hud b {
  color: var(--ink);
  font-weight: 600;
  font-family: var(--mono);
}

.gp-hud-focus {
  color: var(--accent-dark);
}

.gp-hud-focus b {
  color: var(--accent-dark);
}

.gp-legend {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 12px;
  box-shadow: var(--shadow);
  pointer-events: none;
  max-width: 340px;
}

.gp-legend-title {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: .04em;
}

.gp-legend-list {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
}

.gp-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--ink-2);
  white-space: nowrap;
}

.gp-legend-item b {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--faint);
  font-weight: 500;
}

.gp-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex: none;
}

.gp-legend-edges {
  display: flex;
  gap: 12px;
  margin-top: 7px;
  padding-top: 7px;
  border-top: 1px solid var(--line-soft);
}

.gp-legend-edge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--muted);
}

.gp-ln {
  width: 14px;
  height: 2px;
  border-radius: 2px;
  display: inline-block;
}

.gp-ln.dep {
  height: 0;
  border-top: 2px solid currentColor;
}

/* ------------------------------------------------------------------ 缩放按钮 */

.gp-zoombar {
  position: absolute;
  top: 10px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 3;
}

.gp-zbtn {
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  padding: 0;
}

.gp-zbtn:hover {
  background: var(--surface-2);
  color: var(--ink);
  border-color: var(--faint-line);
}

/* ------------------------------------------------------------------ 悬浮提示 */

.gp-tip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  background: var(--ink-invert);
  color: var(--on-invert);
  border-radius: 7px;
  padding: 5px 9px;
  font-size: 11.5px;
  display: flex;
  align-items: center;
  gap: 7px;
  max-width: 320px;
  box-shadow: var(--shadow-md);
}

.gp-tip-code {
  font-family: var(--mono);
  font-size: 10.5px;
  opacity: .72;
  flex: none;
}

.gp-tip-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ------------------------------------------------------------------ 右侧详情栏 */

.gp-side {
  flex: none;
  width: 320px;
  border-left: 1px solid var(--line);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.gp-side.collapsed {
  display: none;
}

.gp-side-h {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line-soft);
  flex: none;
  font-size: 13px;
}

.gp-side-body {
  padding: 14px;
  overflow-y: auto;
  flex: 1;
}

.gp-node-head {
  margin-bottom: 12px;
}

.gp-node-code {
  font-size: 11.5px;
  color: var(--accent-dark);
  letter-spacing: .02em;
}

.gp-node-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  margin-top: 3px;
}

.gp-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 10px 12px;
  background: var(--surface-2);
  border-radius: 10px;
  margin-bottom: 14px;
}

.gp-fact {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 12.5px;
  min-width: 0;
}

.gp-fact-k {
  color: var(--muted);
  flex: none;
  width: 62px;
}

.gp-fact-v {
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  overflow-wrap: anywhere;
}

.gp-rel-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
  margin: 14px 0 6px;
}

.gp-rel-count {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  background: var(--surface-2);
  border-radius: 99px;
  padding: 1px 7px;
  font-weight: 500;
}

.gp-rel-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.gp-rel-item {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 5px 7px;
  border-radius: 7px;
  cursor: pointer;
  font: inherit;
  min-width: 0;
}

.gp-rel-item:hover {
  background: var(--surface-2);
}

.gp-rel-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
}

.gp-rel-code {
  font-size: 10.5px;
  color: var(--muted);
  flex: none;
  max-width: 96px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gp-rel-title {
  font-size: 12.5px;
  color: var(--ink-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.gp-open {
  width: 100%;
  margin-top: 18px;
  justify-content: center;
}

/* ------------------------------------------------------------------ 说明态 */

.gp-note {
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.7;
  margin: 0 0 10px;
}

.gp-note-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  margin: 16px 0 6px;
}

.gp-note-list {
  margin: 0;
  padding-left: 18px;
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.75;
}

/* ------------------------------------------------------------------ 窄屏 */

@media (max-width: 900px) {
  .gp-side {
    width: 280px;
  }
  .gp-search-wrap {
    width: 150px;
  }
}

@media (max-width: 700px) {
  .gp-body {
    flex-direction: column;
  }
  .gp-side {
    width: auto;
    max-height: 42vh;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .gp-legend {
    display: none;
  }
}