:root {
  color-scheme: light;
  --bg: #fbf7ef;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: #ffffff;
  --text: #18202a;
  --muted: #5b6675;
  --accent: #0f5bd8;
  --accent-soft: rgba(15, 91, 216, 0.1);
  --border: rgba(24, 32, 42, 0.12);
  --shadow: 0 16px 48px rgba(24, 32, 42, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  font-family: "Charter", "Iowan Old Style", "Palatino Linotype", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.28), transparent 34%),
    radial-gradient(circle at bottom right, rgba(99, 102, 241, 0.22), transparent 30%),
    linear-gradient(180deg, #eef6ff 0%, #dbeafe 100%);
}

a {
  color: var(--accent);
}

code {
  font-family: ui-monospace, SFMono-Regular, monospace;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.42);
  background: rgba(238, 246, 255, 0.92);
  backdrop-filter: blur(12px);
}

.site-header__inner,
.site-main {
  width: 100%;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 1rem;
}

.site-brand {
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.95rem;
}

.site-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  max-width: 320px;
  margin: 0 1rem;
}

.site-search input {
  width: 100%;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--panel-strong);
  font: inherit;
  font-size: 0.9rem;
}

.site-search input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.site-search button {
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
  cursor: pointer;
  font-size: 0.9rem;
}

.site-main {
  padding: 0;
  height: calc(100vh - 64px);
}

/* Workspace layout - adaptive grid */
.workspace-shell {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(0, 2fr);
  gap: 0;
  align-items: stretch;
  height: 100%;
  max-width: 100%;
}

/* Document view: sidebar gets reasonable fixed proportion */
.workspace-shell--document {
  grid-template-columns: minmax(260px, 0.38fr) minmax(0, 1fr);
}

/* Empty state: more balanced 50/50 feel */
.workspace-shell--empty {
  grid-template-columns: minmax(300px, 1fr) minmax(300px, 1fr);
}

/* Miller browser - flex layout so all columns are visible as vertical slices */
.miller-browser {
  display: flex;
  flex-direction: row;
  overflow-x: auto;
  min-height: 100%;
  max-height: 100%;
  border: 1px solid var(--border);
  border-right: 0;
  border-radius: 0;
  background: var(--panel);
}

.miller-browser + .document-shell {
  border-left: 1px solid var(--border);
}

.miller-column {
  flex: 0 0 auto;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Root column - fixed width for top-level navigation */
.miller-column:first-child {
  width: 160px;
  border-left: 0;
}

/* Middle columns - narrow slices (48px shows ~32px of content) */
.miller-column:not(:first-child):not(:last-child) {
  width: 48px;
}

/* Active/last column - grows to fill remaining sidebar space */
.miller-column:last-child {
  flex: 1 1 auto;
  min-width: 200px;
}

.miller-column h2 {
  position: sticky;
  top: 0;
  z-index: 1;
  margin: 0;
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font: 700 0.72rem/1.2 ui-monospace, SFMono-Regular, monospace;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Middle column headers - show just first couple chars */
.miller-column:not(:first-child):not(:last-child) h2 {
  padding: 0.7rem 0.3rem;
  text-align: center;
}

.miller-column:not(:first-child):not(:last-child) h2 .miller-column-title-text {
  display: inline-block;
  max-width: 2rem;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: bottom;
}

.miller-column ul {
  margin: 0;
  padding: 0.3rem;
  list-style: none;
  overflow-y: auto;
  flex: 1;
}

.miller-column a {
  display: flex;
  min-height: 2.1rem;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  border-radius: 0;
  color: var(--text);
  text-decoration: none;
  font-size: 0.94rem;
}

/* Middle column items - icon + truncated text */
.miller-column:not(:first-child):not(:last-child) a {
  padding: 0.4rem 0.2rem;
  justify-content: center;
}

.miller-column:not(:first-child):not(:last-child) .browser-item-label {
  justify-content: center;
  gap: 0.15rem;
}

.miller-column:not(:first-child):not(:last-child) .browser-item-name {
  display: inline-block;
  max-width: 1.6rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: bottom;
}

.miller-column:not(:first-child):not(:last-child) .browser-item-chevron {
  display: none;
}

.browser-item-label {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 0.4rem;
}

.browser-icon {
  position: relative;
  display: inline-block;
  width: 1rem;
  height: 0.9rem;
  flex: 0 0 auto;
}

.browser-icon--folder {
  margin-top: 0.1rem;
  border: 1px solid rgba(15, 91, 216, 0.24);
  border-radius: 0;
  background: var(--accent-soft);
}

.browser-icon--folder::before {
  position: absolute;
  top: -0.22rem;
  left: 0.1rem;
  width: 0.45rem;
  height: 0.25rem;
  border: 1px solid rgba(15, 91, 216, 0.24);
  border-bottom: 0;
  border-radius: 0;
  background: var(--accent-soft);
  content: "";
}

.browser-icon--page {
  border: 1px solid var(--border);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.72);
}

.browser-icon--page::before {
  position: absolute;
  right: -1px;
  top: -1px;
  width: 0.3rem;
  height: 0.3rem;
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  content: "";
}

.browser-icon--root {
  width: 0.85rem;
  height: 0.85rem;
  border: 1.5px solid var(--accent);
  border-radius: 0;
  background: var(--accent-soft);
}

.browser-icon--root::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.3rem;
  height: 0.3rem;
  border-radius: 0;
  background: var(--accent);
  transform: translate(-50%, -50%);
  content: "";
}

.miller-column--root h2 {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.miller-column a:hover,
.miller-column a.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

.browser-item-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Document shell */
.document-shell,
.error-panel,
.empty-preview {
  border: 1px solid var(--border);
  border-left: 0;
  border-radius: 0;
  background: var(--panel);
}

.error-panel,
.empty-preview {
  padding: 2rem;
}

.document-shell {
  padding: 1.5rem 2rem;
  min-height: 100%;
  max-height: 100%;
  overflow-y: auto;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font: 700 0.78rem/1.2 ui-monospace, SFMono-Regular, monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lede {
  max-width: 44rem;
  color: var(--muted);
  line-height: 1.7;
}

.tag-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-list a {
  display: inline-flex;
  padding: 0.15rem 0.4rem;
  border-radius: 0;
  background: var(--accent-soft);
  text-decoration: none;
}

.breadcrumbs {
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  color: var(--muted);
  margin-left: 0.25rem;
}

.breadcrumbs a {
  color: var(--accent);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs span[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

.document-meta {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.document-meta h1 {
  margin: 0 0 0.75rem;
  font-size: 1.85rem;
  line-height: 1.1;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin: 0;
}

.meta-grid div {
  min-width: 0;
}

.meta-grid dt {
  margin: 0 0 0.2rem;
  color: var(--muted);
  font: 700 0.68rem/1.2 ui-monospace, SFMono-Regular, monospace;
  text-transform: uppercase;
}

.meta-grid dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.markdown-body {
  line-height: 1.75;
}

.markdown-body pre {
  overflow-x: auto;
  padding: 1rem;
  border-radius: 0;
  background: #18202a;
  color: #f7f9fc;
}

.markdown-body blockquote {
  margin-left: 0;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--accent);
  border-radius: 0;
  background: rgba(15, 91, 216, 0.05);
}

.markdown-body img {
  max-width: 100%;
}

.version-notice {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  max-width: min(28rem, calc(100vw - 2rem));
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--panel-strong);
}

.offline-notice {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  max-width: min(28rem, calc(100vw - 2rem));
  padding: 0.6rem 0.85rem;
  border: 1px solid rgba(234, 179, 8, 0.4);
  border-radius: 0;
  background: rgba(254, 252, 232, 0.95);
  color: #854d0e;
  font-size: 0.9rem;
}

.offline-notice[hidden] {
  display: none;
}

.offline-icon {
  display: inline-block;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 0;
  background: #eab308;
  flex-shrink: 0;
}

.version-notice[hidden] {
  display: none;
}

.version-notice p {
  margin: 0;
  color: var(--text);
}

.version-notice button {
  min-height: 2.2rem;
  padding: 0 0.8rem;
  border: 0;
  border-radius: 0;
  color: white;
  background: var(--accent);
  font: 700 0.9rem/1 ui-monospace, SFMono-Regular, monospace;
  cursor: pointer;
}

/* Adaptive breakpoints */
@media (max-width: 1024px) {
  .workspace-shell,
  .workspace-shell--document,
  .workspace-shell--empty {
    grid-template-columns: minmax(240px, 0.45fr) minmax(0, 1fr);
    gap: 0;
  }

  .document-shell {
    padding: 1.25rem 1.5rem;
  }
}

@media (max-width: 768px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    min-height: auto;
  }

  .site-main {
    height: auto;
    min-height: calc(100vh - 64px);
  }

  .workspace-shell,
  .workspace-shell--document,
  .workspace-shell--empty {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .miller-browser {
    min-height: 16rem;
    max-height: 50vh;
    border-right: 1px solid var(--border);
    border-bottom: 0;
  }

  .miller-column,
  .miller-column:first-child,
  .miller-column:last-child,
  .miller-column:not(:first-child):not(:last-child) {
    flex: 0 0 auto;
    width: auto;
    min-width: 9rem;
    max-width: none;
  }

  .miller-column:not(:first-child):not(:last-child) h2 {
    padding: 0.7rem 0.8rem;
    text-align: left;
  }

  .miller-column:not(:first-child):not(:last-child) h2 .miller-column-title-text {
    max-width: none;
  }

  .miller-column:not(:first-child):not(:last-child) a {
    padding: 0.4rem 0.5rem;
    justify-content: space-between;
  }

  .miller-column:not(:first-child):not(:last-child) .browser-item-label {
    justify-content: flex-start;
    gap: 0.4rem;
  }

  .miller-column:not(:first-child):not(:last-child) .browser-item-name {
    max-width: none;
  }

  .miller-column:not(:first-child):not(:last-child) .browser-item-chevron {
    display: inline;
  }

  .document-shell {
    padding: 1.25rem;
    min-height: auto;
    max-height: none;
    border-left: 1px solid var(--border);
    border-top: 0;
  }

  .meta-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1600px) {
  .workspace-shell--document {
    grid-template-columns: minmax(300px, 0.32fr) minmax(0, 1fr);
  }
}

/* Search results */
.search-panel {
  max-width: 800px;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--panel);
}

.search-results {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.search-results li {
  border-bottom: 1px solid var(--border);
}

.search-results li:last-child {
  border-bottom: 0;
}

.search-results a {
  display: block;
  padding: 1rem 0;
  color: var(--text);
  text-decoration: none;
}

.search-results a:hover {
  color: var(--accent);
}

.search-result-title {
  display: block;
  font-weight: 600;
  font-size: 1.1rem;
}

.search-result-path {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, monospace;
}