:root {
  color-scheme: light;
  --sidebar: #0b0b0b;
  --sidebar-line: rgba(255, 255, 255, 0.11);
  --sidebar-soft: rgba(255, 255, 255, 0.06);
  --paper: #ffffff;
  --paper-edge: #d9d9d2;
  --text: #1f1f1f;
  --muted: #616161;
  --ink: #111111;
  --line: rgba(17, 17, 17, 0.1);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

html {
  scrollbar-gutter: stable;
}

body {
  background: #efefea;
  color: var(--text);
  font-family: "Courier New", Courier, monospace;
}

a {
  color: inherit;
}

.layout {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow: auto;
  scrollbar-gutter: stable;
  background: var(--sidebar);
  color: #f6f6f2;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.logo {
  display: grid;
  gap: 6px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--sidebar-line);
}

.brand-link {
  color: inherit;
  text-decoration: none;
  display: grid;
  gap: 6px;
}

.logo-mark {
  font-size: 0.82rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.58);
}

.logo-title {
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.search-trigger {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: #111111;
  color: #fff;
  padding: 12px 12px;
  border-radius: 10px;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.search-trigger:hover {
  background: #171717;
}

.search-box {
  display: grid;
  gap: 6px;
}

.menu-toggle {
  display: none;
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: transparent;
  color: #fff;
  padding: 12px 12px;
  border-radius: 10px;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

.sidebar-menu {
  display: grid;
  gap: 18px;
}

.search-label,
.menu-title,
.copyright {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.58);
}

.search-input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: #111111;
  color: #fff;
  padding: 12px 12px;
  border-radius: 10px;
  font: inherit;
  outline: none;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.34);
}

.search-results {
  display: grid;
  gap: 8px;
}

.search-results .item {
  display: block;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 10px;
  padding: 10px 11px;
  background: rgba(255, 255, 255, 0.05);
  text-decoration: none;
  color: #fff;
}

.search-results .item:hover {
  background: rgba(255, 255, 255, 0.1);
}

.search-results .item-title {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 4px;
}

.search-results .item-meta {
  display: block;
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.74rem;
  line-height: 1.35;
}

.menu {
  display: grid;
  gap: 8px;
}

.menu details {
  border-top: 1px solid var(--sidebar-line);
  padding-top: 8px;
}

.menu details:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.menu summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.menu summary::-webkit-details-marker {
  display: none;
}

.menu summary::before {
  content: "+";
  color: rgba(255, 255, 255, 0.55);
  width: 14px;
  display: inline-block;
}

.menu details[open] > summary::before {
  content: "-";
}

.tree {
  margin: 10px 0 0;
  padding: 0 0 0 10px;
  display: grid;
  gap: 3px;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.tree details {
  border-top: 0;
  padding-top: 0;
}

.tree summary,
.tree a {
  font-size: 0.92rem;
  letter-spacing: 0;
  text-transform: none;
}

.tree a,
.menu-link {
  display: block;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.88);
  padding: 5px 8px 5px 7px;
  border-radius: 10px;
  border: 1px solid transparent;
  position: relative;
}

.tree a:hover,
.menu-link:hover {
  background: var(--sidebar-soft);
}

.tree a.is-active,
.menu-link.is-active {
  background: rgba(14, 53, 30, 0.34);
  border-color: rgba(128, 197, 145, 0.22);
}

.tree .children {
  margin-left: 5px;
  padding-left: 10px;
  border-left: 1px dashed rgba(255, 255, 255, 0.12);
  display: grid;
  gap: 2px;
}

.tree-title {
  display: inline-block;
  padding-right: 20px;
  text-align: left;
}

.tree-dot {
  position: absolute;
  right: 10px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: transparent;
  box-shadow: none;
}

.is-path > .tree-dot,
.menu-link.is-path .tree-dot {
  background: #1e5b31;
  box-shadow: 0 0 0 2px rgba(30, 91, 49, 0.12);
}

.menu-link.is-active .tree-dot,
.folder.is-path > summary .tree-dot {
  background: #1e5b31;
  box-shadow: 0 0 0 2px rgba(30, 91, 49, 0.12);
}

.folder > summary,
.menu-link {
  padding-right: 18px;
}

.folder > summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.folder > summary .tree-title {
  padding-right: 18px;
}

.folder.is-path > summary,
.menu-link.is-path {
  color: #eef5ef;
}

.folder.is-path > summary {
  background: rgba(14, 53, 30, 0.28);
  border-radius: 10px;
}

.menu-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--sidebar-line);
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.84rem;
  line-height: 1.5;
}

.menu-footer .copyright {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: none;
}

.footer-links {
  display: grid;
  gap: 4px;
  margin: 10px 0;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.desktop-footer {
  display: grid;
  gap: 8px;
}

.mobile-footer {
  display: none;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.content {
  padding: 24px;
}

.paper {
  position: relative;
  min-height: calc(100vh - 48px);
  margin: 0 auto;
  max-width: 1060px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(252, 252, 249, 0.98)),
    repeating-linear-gradient(180deg, transparent 0, transparent 27px, rgba(0, 0, 0, 0.028) 28px);
  border: 1px solid var(--paper-edge);
  box-shadow: var(--shadow);
  padding: 62px 72px 68px;
}

.paper::before {
  content: "";
  position: absolute;
  inset: 24px 24px 24px 28px;
  border-left: 1px solid rgba(0, 0, 0, 0.06);
  pointer-events: none;
}

.page-path {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-title {
  margin: 0;
  font-size: 2rem;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-lead {
  margin: 16px 0 0;
  max-width: 70ch;
  font-size: 1rem;
  line-height: 1.85;
}

.page-body {
  margin-top: 28px;
  max-width: none;
  width: 100%;
}

.page-body h2,
.page-body h3 {
  margin: 28px 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 1.18rem;
}

.page-body p,
.page-body li {
  font-size: 1rem;
  line-height: 1.85;
}

.page-body ul,
.page-body ol {
  padding-left: 22px;
}

.page-body blockquote {
  margin: 18px 0;
  padding: 12px 16px;
  border-left: 2px solid rgba(0, 0, 0, 0.18);
  background: #fafaf8;
  color: #3f3f3f;
}

.page-body a,
.related a,
.link {
  color: #0a0a0a;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.broken-link {
  color: #8a3d3d;
  text-decoration: line-through;
}

.meta-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

.related {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}

.related .item {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  text-decoration: none;
  color: var(--text);
}

.related .item:hover {
  background: #f6f6f3;
}

.search-dialog {
  width: min(880px, calc(100vw - 32px));
  border: 1px solid var(--paper-edge);
  border-radius: 18px;
  padding: 0;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.26);
  background: #fff;
}

.search-dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.search-dialog-form {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.search-dialog-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.search-close {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  width: 38px;
  height: 38px;
  font-size: 1.2rem;
  cursor: pointer;
}

.search-input-dialog {
  width: 100%;
}

.search-results-dialog {
  max-height: min(60vh, 560px);
  overflow: auto;
  padding-right: 4px;
}

.search-results-dialog .item {
  color: var(--text);
  background: #fff;
}

.search-results-dialog .item-meta {
  color: var(--muted);
}

@media (max-width: 1120px) {
  .layout {
    grid-template-columns: 290px minmax(0, 1fr);
  }

  .paper {
    padding: 52px 56px 60px;
  }
}

@media (max-width: 840px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
    padding: 16px 12px 14px;
  }

  .menu-toggle {
    display: block;
  }

  .sidebar-menu {
    display: none;
  }

  .sidebar.is-menu-open .sidebar-menu {
    display: grid;
  }

  .desktop-footer {
    display: none;
  }

  .mobile-footer {
    display: grid;
  }

  .content {
    padding: 12px;
  }

  .paper {
    padding: 42px 24px 48px;
    min-height: auto;
  }

  .paper::before {
    inset: 18px 12px 18px 18px;
  }

  .menu-footer .copyright {
    color: var(--muted);
    font-size: 0.78rem;
  }

  .mobile-footer .footer-links a,
  .desktop-footer .footer-links a {
    color: var(--text);
  }
}