:root {
  color-scheme: dark;
  --bg: #171717;
  --panel: #22211f;
  --panel-strong: #2c2a27;
  --panel-soft: #1d2321;
  --line: #3b3935;
  --text: #f2efe8;
  --muted: #aba59a;
  --accent: #69b8a8;
  --accent-strong: #8ed6c4;
  --warning: #e47d68;
  --yellow: #d5b765;
  --blue: #80a7d8;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(260px, 300px) minmax(420px, 1fr) minmax(260px, 320px);
  min-height: 100vh;
}

.sidebar,
.inspector {
  background: var(--panel);
  border-color: var(--line);
  padding: 18px;
}

.sidebar {
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.inspector {
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(105, 184, 168, 0.45);
  border-radius: 8px;
  background: #24302d;
  color: var(--accent-strong);
  font-weight: 800;
}

.brand h1 {
  margin: 0;
  font-size: 18px;
}

.brand p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.resource-hub {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 12px;
}

.resource-hub-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.resource-hub-title a {
  color: var(--accent-strong);
  text-transform: none;
}

.resource-link {
  display: grid;
  gap: 3px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--text);
  padding: 9px;
  text-decoration: none;
}

.resource-link:hover {
  border-color: var(--line);
  background: var(--panel-strong);
  text-decoration: none;
}

.resource-link strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}

.resource-link span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.sidebar-actions,
.topbar-actions,
.view-toggle,
.meta-row,
.panel-title {
  display: flex;
  align-items: center;
}

.sidebar-actions {
  gap: 8px;
}

.primary-button,
.icon-button,
.danger-button,
.view-toggle button,
.meta-row button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--text);
  min-height: 38px;
}

.primary-button {
  flex: 1;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #10201d;
  border-color: transparent;
  font-weight: 700;
}

.primary-button span {
  font-size: 22px;
  line-height: 0;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 40px;
  padding: 0;
  font-size: 18px;
}

.file-button {
  position: relative;
  overflow: hidden;
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #191918;
  color: var(--muted);
}

.search input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.github-form {
  display: grid;
  gap: 9px;
  margin-top: 12px;
}

.github-form label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 12px;
}

.github-form input {
  min-height: 34px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: 0;
  background: #191918;
  color: var(--text);
  padding: 0 10px;
}

.github-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.github-actions button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--text);
  font-size: 12px;
}

.sync-help {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.sync-pill {
  display: inline-flex;
  align-items: center;
  width: max-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 7px;
  color: var(--muted);
  font-size: 11px;
}

.meta-row,
.panel-title {
  justify-content: space-between;
  gap: 10px;
}

.meta-row {
  color: var(--muted);
  font-size: 12px;
}

.meta-row button {
  min-height: 30px;
  padding: 0 10px;
  color: var(--muted);
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  padding-right: 2px;
}

.note-item {
  display: grid;
  gap: 7px;
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  padding: 12px;
}

.note-item:hover,
.note-item.active {
  background: var(--panel-strong);
  border-color: var(--line);
}

.note-item.active {
  box-shadow: inset 3px 0 0 var(--accent);
}

.note-item strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.note-item span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.workspace {
  display: flex;
  min-width: 0;
  flex-direction: column;
  background: #191a19;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 74px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(25, 26, 25, 0.94);
}

.title-input {
  min-width: 0;
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 24px;
  font-weight: 750;
}

.topbar-actions {
  flex: 0 0 auto;
  gap: 10px;
}

.view-toggle {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.view-toggle button {
  min-height: 36px;
  border: 0;
  border-radius: 0;
  padding: 0 12px;
  color: var(--muted);
}

.view-toggle button.active {
  background: var(--accent);
  color: #10201d;
  font-weight: 700;
}

.danger-button {
  padding: 0 13px;
  color: #ffd4cc;
}

.editor-grid {
  display: grid;
  flex: 1;
  min-height: 0;
}

.editor-grid.split {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.editor-grid.edit {
  grid-template-columns: minmax(0, 1fr);
}

.editor-grid.preview-only {
  grid-template-columns: minmax(0, 1fr);
}

#editor,
.preview {
  width: 100%;
  height: 100%;
  min-height: calc(100vh - 74px);
  padding: 28px;
  overflow: auto;
}

#editor {
  resize: none;
  border: 0;
  border-right: 1px solid var(--line);
  outline: 0;
  background: #191a19;
  color: var(--text);
  font-family: "Cascadia Code", Consolas, "Microsoft YaHei", monospace;
  font-size: 15px;
  line-height: 1.75;
}

.editor-grid.preview-only #editor,
.editor-grid.edit .preview {
  display: none;
}

.preview {
  background: #20211f;
  line-height: 1.75;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  line-height: 1.25;
}

.markdown-body code {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 5px;
  background: #171717;
  color: var(--accent-strong);
}

.markdown-body pre {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: #171717;
}

.markdown-body pre code {
  border: 0;
  padding: 0;
}

.markdown-body blockquote {
  margin-left: 0;
  padding-left: 14px;
  border-left: 3px solid var(--yellow);
  color: #d8d0c2;
}

.markdown-body a,
.wiki-link {
  color: var(--accent-strong);
}

.wiki-link.missing {
  color: var(--yellow);
  text-decoration-style: dashed;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 14px;
  box-shadow: var(--shadow);
}

.panel h2 {
  margin: 0;
  font-size: 14px;
}

.panel-title span {
  color: var(--muted);
  font-size: 12px;
}

#graphCanvas {
  width: 100%;
  height: 220px;
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #171717;
}

.tag-cloud,
.backlinks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag,
.backlink {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-strong);
  color: var(--text);
  padding: 6px 10px;
  font-size: 12px;
}

.backlink {
  border-radius: 8px;
  width: 100%;
  text-align: left;
}

.tag.active {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.compact dl {
  display: grid;
  gap: 10px;
  margin: 0;
}

.compact dl div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.compact dt {
  color: var(--muted);
}

.compact dd {
  margin: 0;
  text-align: right;
}

.empty-state {
  display: grid;
  gap: 6px;
  padding: 16px;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 8px;
}

.empty-state strong {
  color: var(--text);
}

@media (max-width: 1120px) {
  .app-shell {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .inspector {
    display: none;
  }
}

@media (max-width: 760px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    min-height: 42vh;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions {
    justify-content: space-between;
  }

  .view-toggle {
    flex: 1;
  }

  .view-toggle button {
    flex: 1;
  }

  .editor-grid.split {
    grid-template-columns: 1fr;
  }

  .editor-grid.split .preview {
    border-top: 1px solid var(--line);
  }

  #editor,
  .preview {
    min-height: 55vh;
    padding: 20px;
  }
}