/* Light-on-white theme override — modelled on
   https://arrow.apache.org/docs/format/Columnar.html (Furo/Sphinx look).
   Overrides mdBook's "light" theme variables without touching templates. */

:root,
.light {
  /* Pure white page + content backgrounds */
  --bg: #ffffff;
  --fg: #24292f;

  /* Sidebar — subtle off-white with clear separation */
  --sidebar-bg: #f8f9fa;
  --sidebar-fg: #24292f;
  --sidebar-non-existant: #aab1bb;
  --sidebar-active: #0969da;
  --sidebar-spacer: #e5e7eb;

  /* Scrollbar */
  --scrollbar: #d0d7de;

  /* Icons, top bar */
  --icons: #57606a;
  --icons-hover: #24292f;

  /* Links — GitHub blue, similar to Arrow docs */
  --links: #0969da;

  /* Inline code + code block backgrounds — light gray, no yellow tint */
  --inline-code-color: #0550ae;
  --theme-popup-bg: #ffffff;
  --theme-popup-border: #d0d7de;
  --theme-hover: #eef2f6;

  --quote-bg: #f6f8fa;
  --quote-border: #d0d7de;

  --warning-border: #f0b429;

  --table-border-color: #d0d7de;
  --table-header-bg: #f6f8fa;
  --table-alternate-bg: #fbfcfd;

  --searchbar-border-color: #d0d7de;
  --searchbar-bg: #ffffff;
  --searchbar-fg: #24292f;
  --searchbar-shadow-color: rgba(0, 0, 0, 0.06);
  --searchresults-header-fg: #57606a;
  --searchresults-border-color: #d0d7de;
  --searchresults-li-bg: #ffffff;
  --search-mark-bg: #fff3b0;

  --color-scheme: light;
}

html,
body {
  background-color: #ffffff;
}

/* Body typography — clean sans-serif stack, comfortable line height */
html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.content {
  line-height: 1.6;
  color: var(--fg);
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
  color: #1f2328;
  font-weight: 600;
  line-height: 1.25;
  margin-top: 1.8em;
  margin-bottom: 0.6em;
}

.content h1 {
  border-bottom: 1px solid #d0d7de;
  padding-bottom: 0.3em;
}

.content h2 {
  border-bottom: 1px solid #eaeef2;
  padding-bottom: 0.25em;
}

/* Links */
.content a,
.content a:visited {
  color: var(--links);
  text-decoration: none;
}
.content a:hover {
  text-decoration: underline;
}

/* Inline code */
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  font-size: 0.9em;
  background-color: #f6f8fa;
  border-radius: 4px;
  padding: 0.15em 0.35em;
  color: #0550ae;
}

/* Code blocks — bordered, subtle gray fill, no rounded shadow */
pre {
  background-color: #f6f8fa !important;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 12px 16px;
  overflow-x: auto;
  line-height: 1.5;
}

pre > code {
  background-color: transparent !important;
  color: #1f2328;
  padding: 0;
  border-radius: 0;
  font-size: 0.9em;
}

/* Tables — Arrow-docs style: thin borders, subtle header shade */
.content table {
  border-collapse: collapse;
  margin: 1em 0;
  display: table;
  width: auto;
  max-width: 100%;
}

.content table th,
.content table td {
  border: 1px solid var(--table-border-color);
  padding: 6px 12px;
}

.content table th {
  background-color: var(--table-header-bg);
  font-weight: 600;
  text-align: left;
}

.content table tbody tr:nth-child(even) td {
  background-color: var(--table-alternate-bg);
}

/* Blockquotes */
.content blockquote {
  border-left: 3px solid var(--quote-border);
  background-color: var(--quote-bg);
  color: #57606a;
  padding: 8px 14px;
  margin-left: 0;
}

/* Sidebar */
.sidebar {
  background-color: var(--sidebar-bg);
  border-right: 1px solid #e5e7eb;
}

.sidebar .sidebar-scrollbox {
  padding: 12px 14px;
}

.chapter li.chapter-item {
  line-height: 1.5;
  padding: 2px 0;
}

.chapter li a {
  color: var(--sidebar-fg);
}

.chapter li a.active {
  color: var(--sidebar-active);
  font-weight: 600;
}

/* Top menu bar — clean white */
.menu-bar {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e7eb;
}

/* Page navigation buttons */
.nav-chapters {
  color: var(--icons);
}
.nav-chapters:hover {
  color: var(--icons-hover);
}

/* Search */
#searchresults a {
  color: var(--links);
}