/* 易经学院 · 知识图谱样式（platform-engineer 维护）
 * 只消费 assets/css/academy.css 已定义的 CSS 变量令牌（--c-*、--card-*），不新增令牌、不写死色值，
 * 两套主题自动适配。由 assets/js/graph.js 在首次用到图谱时动态注入 <link>；
 * library/graph.html 也静态引用本文件（同 id="ya-graph-css"，避免重复插入）。
 */

/* ---------- 「知识关联」块：卦页 / 课程页 / 术语表等页面内嵌容器复用 ---------- */
.ya-graph-related { margin-top: 1rem; }
.ya-graph-related-title {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: rgb(var(--c-gold) / 0.9); font-weight: 700; margin-bottom: 0.75rem;
}
.ya-graph-group { margin-top: 0.65rem; }
.ya-graph-group:first-child { margin-top: 0; }
.ya-graph-group-label {
  font-size: 0.72rem; color: rgb(var(--c-slate-400)); margin-bottom: 0.35rem;
}
.ya-graph-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.ya-graph-chip {
  display: inline-flex; align-items: center; min-height: 32px; padding: 0.3rem 0.75rem;
  border-radius: 9999px; font-size: 0.8rem; line-height: 1.3; text-decoration: none;
  color: rgb(var(--c-slate-300)); border: 1px solid rgb(var(--c-border) / 0.85);
  background: rgb(var(--c-card) / 0.4); transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.ya-graph-chip:hover {
  color: rgb(var(--c-gold)); border-color: rgb(var(--c-gold) / 0.6); background: rgb(var(--c-gold) / 0.1);
}

/* ---------- 视图切换 tab（关系网 / 大纲 / 圆图 / 方图 / 消息环 / 易学史，运行时按 ACADEMY.graphViews 动态生成） ---------- */
.ya-graph-view-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.9rem 0 0; }
.ya-graph-view-tab {
  display: inline-flex; align-items: center; gap: 0.4rem; min-height: 44px; padding: 0.45rem 0.9rem;
  border-radius: 0.75rem; font-size: 0.82rem; font-weight: 600; color: rgb(var(--c-slate-400));
  border: 1px solid rgb(var(--c-border) / 0.85); background: rgb(var(--c-card) / 0.35);
}
.ya-graph-view-tab:hover { color: rgb(var(--c-white)); border-color: rgb(var(--c-gold) / 0.5); }
.ya-graph-view-tab.is-active { color: rgb(var(--c-white)); border-color: rgb(var(--c-gold) / 0.7); background: rgb(var(--c-gold) / 0.15); }

/* ---------- 图谱总览页 ---------- */
.ya-graph-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; }
.ya-graph-search {
  display: flex; align-items: center; gap: 0.6rem; flex: 1 1 16rem; min-width: 0;
  padding: 0.6rem 0.9rem; border-radius: 0.85rem;
  background: var(--card-bg); border: 1px solid rgb(var(--c-border) / 0.85);
}
.ya-graph-search input {
  flex: 1; min-width: 0; background: transparent; border: none; outline: none;
  font-size: 0.9rem; color: rgb(var(--c-white));
}
.ya-graph-search input::placeholder { color: rgb(var(--c-slate-500)); }

.ya-graph-filters { display: flex; flex-wrap: wrap; gap: 0.5rem 0.75rem; margin-top: 0.75rem; }
.ya-graph-filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.5rem; }
.ya-graph-filter-group-label { font-size: 0.72rem; color: rgb(var(--c-slate-500)); margin-right: 0.15rem; }
.ya-graph-filter-item {
  display: inline-flex; align-items: center; gap: 0.35rem; min-height: 32px; padding: 0.25rem 0.65rem;
  border-radius: 9999px; font-size: 0.78rem; cursor: pointer; user-select: none;
  border: 1px solid rgb(var(--c-border) / 0.85); color: rgb(var(--c-slate-400));
  background: rgb(var(--c-card) / 0.35);
}
.ya-graph-filter-item input { accent-color: rgb(var(--c-gold)); }
.ya-graph-filter-item.is-on { color: rgb(var(--c-white)); border-color: rgb(var(--c-gold) / 0.6); background: rgb(var(--c-gold) / 0.12); }
.ya-graph-filter-item .dot { width: 0.55rem; height: 0.55rem; border-radius: 9999px; flex: none; }

.ya-graph-count { font-size: 0.75rem; color: rgb(var(--c-slate-500)); }

.ya-graph-layout { display: flex; flex-direction: column; gap: 1rem; margin-top: 0.75rem; }
@media (min-width: 1024px) { .ya-graph-layout { flex-direction: row; align-items: flex-start; } }

.ya-graph-main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 0.75rem; }

.ya-graph-canvas-wrap {
  position: relative; width: 100%;
  border-radius: 1rem; border: 1px solid rgb(var(--c-border) / 0.85);
  background: rgb(var(--c-night) / 0.35); overflow: hidden;
}
#graphCanvas { display: block; width: 100%; height: 520px; touch-action: none; cursor: grab; }
#graphCanvas.is-dragging { cursor: grabbing; }
.ya-graph-zoom {
  position: absolute; right: 0.75rem; bottom: 0.75rem; display: flex; flex-direction: column; gap: 0.4rem;
}
.ya-graph-zoom button {
  width: 44px; height: 44px; border-radius: 0.75rem; display: flex; align-items: center; justify-content: center;
  background: rgb(var(--c-card) / 0.85); border: 1px solid rgb(var(--c-border) / 0.85); color: rgb(var(--c-slate-300));
}
.ya-graph-zoom button:hover { color: rgb(var(--c-gold)); border-color: rgb(var(--c-gold) / 0.6); }
.ya-graph-zoom button.is-on { color: rgb(var(--c-gold)); border-color: rgb(var(--c-gold) / 0.7); background: rgb(var(--c-gold) / 0.15); }

/* ---------- 外部视图模块（圆图/方图/消息环/易学史）的挂载容器：只给尺寸与基础外观，内部由各视图模块自绘 ---------- */
.ya-graph-view-mount {
  width: 100%; min-height: 420px; border-radius: 1rem; position: relative; overflow: hidden;
  border: 1px solid rgb(var(--c-border) / 0.85); background: rgb(var(--c-night) / 0.35);
}
.ya-graph-hint {
  position: absolute; left: 0.75rem; bottom: 0.75rem; font-size: 0.7rem; color: rgb(var(--c-slate-500));
  background: rgb(var(--c-night) / 0.5); padding: 0.2rem 0.5rem; border-radius: 0.5rem;
}

.ya-graph-detail {
  flex: none; width: 100%; border-radius: 1rem; overflow: hidden;
  background: var(--card-bg); border: 1px solid rgb(var(--c-border) / 0.85);
}
@media (min-width: 1024px) { .ya-graph-detail { width: 21rem; } }
.ya-graph-detail-body { padding: 1.1rem; }
.ya-graph-detail-empty { font-size: 0.85rem; color: rgb(var(--c-slate-500)); line-height: 1.6; }
.ya-graph-detail-type { font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; }
.ya-graph-detail-title { font-size: 1.15rem; font-weight: 800; color: rgb(var(--c-white)); margin-top: 0.3rem; }
.ya-graph-detail-sub { font-size: 0.8rem; color: rgb(var(--c-slate-400)); margin-top: 0.15rem; }
.ya-graph-detail-text { font-size: 0.85rem; color: rgb(var(--c-slate-300)); margin-top: 0.6rem; line-height: 1.6; }
.ya-graph-detail-open {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem; min-height: 44px;
  width: 100%; margin-top: 0.85rem; padding: 0.55rem 1rem; border-radius: 0.75rem;
  border: 1px solid rgb(var(--c-gold) / 0.55); color: rgb(var(--c-gold)); font-size: 0.85rem; font-weight: 700;
  text-decoration: none;
}
.ya-graph-detail-open:hover { background: rgb(var(--c-gold) / 0.1); }

/* ---------- 手机：不画 canvas，改为类型 → 节点 → 关系大纲的折叠列表 ---------- */
.ya-graph-list { display: flex; flex-direction: column; gap: 0.6rem; }
.ya-graph-type-group {
  border: 1px solid rgb(var(--c-border) / 0.8); border-radius: 0.85rem; overflow: hidden;
  background: rgb(var(--c-card) / 0.35);
}
.ya-graph-type-header {
  display: flex; align-items: center; gap: 0.5rem; width: 100%; min-height: 44px;
  padding: 0.6rem 0.9rem; font-size: 0.85rem; font-weight: 700; color: rgb(var(--c-white));
  background: transparent; border: none; text-align: left;
}
.ya-graph-type-header .dot { width: 0.6rem; height: 0.6rem; border-radius: 9999px; flex: none; }
.ya-graph-type-header .count { margin-left: auto; font-size: 0.72rem; color: rgb(var(--c-slate-500)); font-weight: 400; }
.ya-graph-node-list { display: none; flex-direction: column; border-top: 1px solid rgb(var(--c-border) / 0.6); }
.ya-graph-type-group.is-open .ya-graph-node-list { display: flex; }
.ya-graph-type-group.is-open .ya-graph-chevron { transform: rotate(180deg); }
.ya-graph-node-btn {
  display: flex; align-items: center; gap: 0.5rem; min-height: 44px; padding: 0.5rem 0.9rem 0.5rem 1.6rem;
  font-size: 0.82rem; color: rgb(var(--c-slate-300)); background: transparent; border: none; text-align: left;
  border-top: 1px solid rgb(var(--c-border) / 0.35);
}
.ya-graph-node-btn:first-child { border-top: none; }
.ya-graph-node-btn.is-active { color: rgb(var(--c-gold)); background: rgb(var(--c-gold) / 0.08); }

/* ---------- 手机底部抽屉：详情栏固定在底部，默认折叠为一行紧凑条，点按展开/收起 ---------- */
[data-device="phone"] .ya-graph-detail {
  position: sticky; bottom: 0; z-index: 10; display: flex; flex-direction: column;
  box-shadow: 0 -8px 24px rgb(var(--c-night) / 0.45);
}
[data-device="phone"] .ya-graph-detail.is-expanded { max-height: 55vh; }
[data-device="phone"] .ya-graph-detail-body { display: none; flex: 1 1 auto; min-height: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; }
[data-device="phone"] .ya-graph-detail.is-expanded .ya-graph-detail-body { display: block; }
.ya-graph-drawer-toggle {
  display: flex; align-items: center; gap: 0.6rem; width: 100%; min-height: 48px; flex: none; padding: 0 1rem;
  font-size: 0.85rem; font-weight: 700; color: rgb(var(--c-white)); background: transparent; border: none; text-align: left;
}
.ya-graph-drawer-toggle .dot { width: 0.65rem; height: 0.65rem; border-radius: 9999px; flex: none; }
.ya-graph-drawer-title { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ya-graph-drawer-chevron { flex: none; transition: transform 0.15s; }
.ya-graph-detail.is-expanded .ya-graph-drawer-chevron { transform: rotate(180deg); }

.ya-graph-legend { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; font-size: 0.75rem; color: rgb(var(--c-slate-400)); }
.ya-graph-legend .dot { width: 0.6rem; height: 0.6rem; border-radius: 9999px; display: inline-block; margin-right: 0.35rem; vertical-align: middle; }