: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(15, 91, 216, 0.16), transparent 34%),
    radial-gradient(circle at bottom right, rgba(14, 163, 125, 0.13), transparent 28%),
    linear-gradient(180deg, #fdfaf5 0%, #f5efe6 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(251, 247, 239, 0.92);
  backdrop-filter: blur(12px);
}

.site-header__inner,
.site-main {
  width: min(1080px, calc(100vw - 2rem));
  margin: 0 auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

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

.site-nav {
  display: flex;
  gap: 1rem;
}

.site-nav a {
  text-decoration: none;
}

.site-main {
  padding: 2rem 0 4rem;
}

.document-shell,
.error-panel,
.empty-preview {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
}

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

.document-shell {
  padding: 1.5rem 2rem;
}

.workspace-shell {
  display: grid;
  grid-template-columns: minmax(20rem, 0.42fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.workspace-shell--empty {
  grid-template-columns: minmax(22rem, 1fr) minmax(18rem, 0.45fr);
}

.miller-browser {
  display: grid;
  grid-auto-columns: minmax(12rem, 1fr);
  grid-auto-flow: column;
  overflow-x: auto;
  min-height: 22rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.miller-column {
  min-width: 12rem;
  border-left: 1px solid var(--border);
}

.miller-column:first-child {
  border-left: 0;
}

.miller-column h2 {
  position: sticky;
  top: 0;
  z-index: 1;
  margin: 0;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font: 700 0.76rem/1.2 ui-monospace, SFMono-Regular, monospace;
  text-transform: uppercase;
}

.miller-column ul {
  margin: 0;
  padding: 0.35rem;
  list-style: none;
}

.miller-column a {
  display: flex;
  min-height: 2.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.45rem 0.55rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
}

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

.miller-column a span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.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: 999px;
  background: var(--accent-soft);
  text-decoration: none;
}

.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(3, minmax(0, 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: var(--radius-md);
  background: #18202a;
  color: #f7f9fc;
}

.markdown-body blockquote {
  margin-left: 0;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 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: var(--radius-sm);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.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: var(--radius-sm);
  color: white;
  background: var(--accent);
  font: 700 0.9rem/1 ui-monospace, SFMono-Regular, monospace;
  cursor: pointer;
}

@media (max-width: 720px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 0;
  }

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

  .miller-browser {
    min-height: 14rem;
  }

  .document-shell {
    padding: 1.25rem;
  }

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