/* ==========================================================================
   共享外壳 — 用于所有"模组"子页面
   结构：顶栏(返回+模组切换) / 左侧 §目录 / 主内容面板
   ========================================================================== */

/* ---------- 顶栏 ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  z-index: 200;
}

.topbar-left { display: flex; align-items: center; gap: 14px; min-width: 0; }

.brand-home {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-2);
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
  flex-shrink: 0;
}
.brand-home:hover { color: var(--text-1); border-color: var(--line-strong); }
.brand-home svg { width: 15px; height: 15px; }

.mod-crumb {
  display: flex; align-items: center; gap: 9px;
  min-width: 0;
}
.mod-crumb .mod-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--mod-color, var(--signal-violet));
  box-shadow: 0 0 10px var(--mod-color, var(--signal-violet));
  flex-shrink: 0;
}
.mod-crumb .mod-code {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3);
  letter-spacing: 0.06em; flex-shrink: 0;
}
.mod-crumb .mod-title {
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  color: var(--text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* 模组快速切换 */
.mod-switch { position: relative; }
.mod-switch-btn {
  display: flex; align-items: center; gap: 8px;
  background: transparent; border: 1px solid var(--line);
  color: var(--text-2); border-radius: 999px; padding: 7px 14px;
  font-family: var(--font-mono); font-size: 0.78rem; cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.mod-switch-btn:hover { color: var(--text-1); border-color: var(--line-strong); }
.mod-switch-btn svg { width: 15px; height: 15px; }

.mod-switch-panel {
  position: absolute; top: calc(100% + 10px); right: 0;
  width: min(340px, 86vw);
  background: #14161f;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 10px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .18s var(--ease), transform .18s var(--ease), visibility .18s;
  z-index: 250;
}
.mod-switch.open .mod-switch-panel { opacity: 1; visibility: visible; transform: translateY(0); }

.mod-switch-item {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 10px; border-radius: var(--radius-sm);
  color: var(--text-2); font-size: 0.86rem;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.mod-switch-item:hover { background: rgba(255,255,255,0.05); color: var(--text-1); }
.mod-switch-item svg { width: 17px; height: 17px; color: var(--item-color); flex-shrink: 0; }
.mod-switch-item.current { color: var(--text-1); background: rgba(255,255,255,0.04); }

/* ---------- 页面骨架 ---------- */
.shell {
  padding-top: var(--topbar-h);
  min-height: 100vh;
  display: flex;
}

/* ---------- 左侧 §目录 ---------- */
.toc-rail {
  width: 248px;
  flex-shrink: 0;
  padding: 32px 18px 40px;
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--line);
}
.toc-rail::-webkit-scrollbar { width: 4px; }
.toc-rail::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 2px; }

.toc-label {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .14em;
  color: var(--text-3); margin-bottom: 14px; display: block;
}
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list a {
  display: flex; align-items: baseline; gap: 8px;
  padding: 7px 10px; margin-bottom: 2px;
  font-size: 0.87rem; color: var(--text-2);
  border-left: 2px solid transparent; border-radius: 0 6px 6px 0;
  transition: color .15s var(--ease), border-color .15s var(--ease), background .15s var(--ease);
}
.toc-list a .num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); }
.toc-list a:hover { color: var(--text-1); background: rgba(255,255,255,0.03); }
.toc-list a.active {
  color: var(--text-1); border-left-color: var(--mod-color);
  background: rgba(255,255,255,0.04);
}
.toc-list a.active .num { color: var(--mod-color); }

.toc-external {
  margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line);
}
.toc-external a {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-2);
  padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.toc-external a:hover { color: var(--mod-color); border-color: var(--mod-color); }
.toc-external a svg { width: 13px; height: 13px; opacity: .7; }

/* 移动端目录抽屉触发按钮 */
.toc-toggle {
  display: none;
  position: fixed; bottom: 22px; right: 22px; z-index: 220;
  width: 48px; height: 48px; border-radius: 50%;
  align-items: center; justify-content: center;
  background: var(--mod-color); color: #0a0b10;
  border: none; box-shadow: 0 10px 30px rgba(0,0,0,0.45);
}
.toc-toggle svg { width: 20px; height: 20px; }

/* ---------- 主内容 ---------- */
.content {
  flex: 1;
  min-width: 0;
  padding: 56px clamp(20px, 5vw, 64px) 100px;
  max-width: 880px;
}

.page-head { margin-bottom: 48px; }
.page-head .mod-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: .1em;
  color: var(--mod-color); border: 1px solid var(--mod-color);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 20px;
}
.page-head .mod-tag svg { width: 14px; height: 14px; }
.page-head h1 {
  font-size: clamp(2rem, 4.5vw, 2.7rem);
  color: var(--text-1);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.page-head .lede { font-size: 1.06rem; color: var(--text-2); max-width: 62ch; }

.section {
  scroll-margin-top: calc(var(--topbar-h) + 20px);
  padding: 40px 0;
  border-top: 1px solid var(--line);
}
.section:first-of-type { border-top: none; padding-top: 0; }

.section-num {
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--mod-color);
  letter-spacing: .1em; display: block; margin-bottom: 10px;
}
.section h2 {
  font-size: 1.5rem; color: var(--text-1); margin-bottom: 18px;
}
.section h3 {
  font-size: 1.1rem; color: var(--text-1); margin: 26px 0 12px;
  padding-left: 12px; border-left: 2px solid var(--mod-color);
}
.section h4 {
  font-size: 0.98rem; color: var(--text-1); margin: 18px 0 8px;
}
.section p { font-size: 0.98rem; }
.section ul, .section ol { color: var(--text-2); padding-left: 1.3em; margin-bottom: 1em; }
.section li { margin-bottom: 6px; }
.section li strong, .section p strong, .section b { color: var(--text-1); font-weight: 600; }
.section a:not(.btn):not(.tag-link) { color: var(--mod-color); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(255,255,255,0.25); }
.section a:not(.btn):not(.tag-link):hover { text-decoration-color: var(--mod-color); }

blockquote {
  margin: 22px 0; padding: 16px 20px;
  border-left: 2px solid var(--mod-color);
  background: rgba(255,255,255,0.03);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-1); font-style: normal;
  font-family: var(--font-display); font-size: 1.02rem; line-height: 1.6;
}

pre {
  background: #0d0f16; border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 18px 20px;
  overflow-x: auto; font-family: var(--font-mono); font-size: 0.84rem;
  color: var(--text-2); line-height: 1.65;
}

.callout {
  display: flex; gap: 12px;
  border: 1px solid var(--line); border-left: 2px solid var(--mod-color);
  background: rgba(255,255,255,0.025);
  border-radius: var(--radius-sm); padding: 14px 16px; margin: 20px 0;
  font-size: 0.92rem; color: var(--text-2);
}
.callout .k { color: var(--text-1); font-weight: 600; }

table {
  width: 100%; border-collapse: collapse; margin: 18px 0;
  font-size: 0.9rem; background: rgba(255,255,255,0.02);
  border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden;
}
th, td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; color: var(--text-2); }
th { font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: .05em; color: var(--text-3); background: rgba(255,255,255,0.03); }
tr:last-child td { border-bottom: none; }
td strong { color: var(--text-1); }

.card-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px; margin: 20px 0;
}
.mini-card {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px; background: rgba(255,255,255,0.02);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.mini-card:hover { border-color: var(--mod-color); transform: translateY(-2px); }
.mini-card h5 { font-size: 0.94rem; color: var(--text-1); margin-bottom: 6px; font-family: var(--font-display); }
.mini-card p { font-size: 0.86rem; margin: 0; }

.badge {
  display: inline-block; font-family: var(--font-mono); font-size: 0.7rem;
  padding: 2px 9px; border-radius: 999px; margin-left: 8px;
  background: color-mix(in srgb, var(--mod-color) 18%, transparent);
  color: var(--mod-color); border: 1px solid color-mix(in srgb, var(--mod-color) 45%, transparent);
  vertical-align: middle;
}

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 0.84rem;
  padding: 11px 20px; border-radius: 999px;
  background: var(--mod-color); color: #0a0b10; font-weight: 600;
  border: none; cursor: pointer;
  transition: filter .2s var(--ease), transform .2s var(--ease);
}
.btn:hover { filter: brightness(1.12); transform: translateY(-1px); }
.btn svg { width: 15px; height: 15px; }
.btn.ghost {
  background: transparent; color: var(--text-1);
  border: 1px solid var(--line-strong);
}
.btn.ghost:hover { border-color: var(--mod-color); color: var(--mod-color); }

.tile-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.tile {
  width: 38px; height: 52px; border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  background: #f4f1ea; color: #1a1a1a; font-weight: 700; font-size: 1rem;
  font-family: var(--font-display); box-shadow: 0 3px 8px rgba(0,0,0,0.35);
}
.tile.wind { background: #dbe9ff; color: #1d4fae; }
.tile.dragon { background: #ffe3ea; color: #b5195c; }
.tile.bamboo { color: #1c7a4d; }
.tile.dot { color: #b5192c; }

/* ---------- 占位内容标记（用于新建但暂无实际内容的板块）---------- */
.stub-note {
  display: flex; gap: 12px; align-items: flex-start;
  border: 1px dashed var(--line-strong); border-radius: var(--radius-md);
  padding: 18px 20px; margin: 24px 0; background: rgba(255,255,255,0.015);
}
.stub-note svg { width: 18px; height: 18px; color: var(--mod-color); flex-shrink: 0; margin-top: 2px; }
.stub-note p { margin: 0; font-size: 0.9rem; }
.stub-note strong { color: var(--text-1); }

.entry-list { list-style: none; padding: 0; margin: 20px 0; display: flex; flex-direction: column; gap: 10px; }
.entry {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius-md);
  background: rgba(255,255,255,0.02);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.entry:hover { border-color: var(--mod-color); background: rgba(255,255,255,0.035); }
.entry .entry-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--mod-color) 16%, transparent);
  color: var(--mod-color);
}
.entry .entry-icon svg { width: 19px; height: 19px; }
.entry-body { flex: 1; min-width: 0; }
.entry-body h5 { font-size: 0.96rem; color: var(--text-1); margin: 0 0 3px; font-family: var(--font-display); }
.entry-body p { margin: 0; font-size: 0.84rem; color: var(--text-3); }
.entry-meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); flex-shrink: 0; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px clamp(20px, 5vw, 64px);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 10px;
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .toc-rail { display: none; }
  .toc-toggle { display: flex; }
  .content { padding: 40px 20px 90px; max-width: 100%; }
  .mod-switch-btn span { display: none; }

  .toc-drawer {
    position: fixed; inset: 0; z-index: 300;
    background: rgba(6,7,11,0.7); backdrop-filter: blur(6px);
    display: none;
  }
  .toc-drawer.open { display: block; }
  .toc-drawer-panel {
    position: absolute; right: 0; top: 0; bottom: 0; width: min(300px, 84vw);
    background: #12141d; border-left: 1px solid var(--line-strong);
    padding: 24px 20px; overflow-y: auto;
  }
  .toc-drawer-close {
    background: none; border: 1px solid var(--line); color: var(--text-2);
    width: 34px; height: 34px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center; margin-bottom: 20px;
  }
  .toc-drawer-close svg { width: 16px; height: 16px; }
}

@media (max-width: 560px) {
  .mod-crumb .mod-title { max-width: 40vw; }
}