/* base.css -- lectio-web layout and typography, ALL of it.
 *
 * This file owns every non-colour rule: font stack, sizing, spacing,
 * line-height, borders' width/style (not colour), and layout. It must
 * never set a colour (background, foreground, border-color, etc.) -- that
 * is entirely the theme file's job (see docs/THEMES.md). Themes set colour
 * only and must never touch layout/type, so any lectio-web theme can be
 * swapped onto this same structure without reflow surprises.
 */

:root {
  /* Reading typeface. A theme may override just this by setting --theme-font
   * (the ONE sanctioned type override; base.css still owns sizing/spacing). */
  --font-reading: var(--theme-font, Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif);
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", "Roboto Mono", Menlo, Consolas, monospace;
  /* Named font-family palette: a theme selects a reading face by setting
   * --theme-font to one of these (see docs/THEMES.md). System-font stacks
   * only -- no webfonts (CSP). */
  --font-serif:         Georgia, "Times New Roman", serif;
  --font-serif-old:     "Palatino Linotype", Palatino, "Book Antiqua", serif;
  --font-serif-classic: "Times New Roman", "Liberation Serif", serif;
  --font-serif-iowan:   "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-sans:          system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-sans-humanist: "Trebuchet MS", "Segoe UI", Verdana, sans-serif;
  --measure: 42rem;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
}

body {
  margin: 0;
  font-family: var(--font-reading);
  font-size: 1.125rem;
  line-height: 1.7;
  background: var(--bg);
  color: var(--fg);
}

/* Global monospace reading toggle (config web_mono / the "mono" top-bar
 * checkbox): forces the reading face to mono over whatever the theme uses,
 * for any theme. UI chrome (--font-ui) is untouched. */
body.mono {
  --font-reading: var(--font-mono);
}

.page {
  max-width: 64rem;
  margin: 0 auto;
  padding: var(--space-3) var(--space-2) var(--space-4);
}

/* Controls bar (date/version/theme) -- layout only; themes set the colours. */
.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
  border-bottom-width: 1px;
  border-bottom-style: solid;
}

.controls label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.controls input,
.controls select,
.controls button {
  font: inherit;
  padding: 0.3rem 0.5rem;
  border-width: 1px;
  border-style: solid;
  border-radius: 0; /* no rounded chrome */
  background: var(--bg);
  color: var(--fg);
}

/* Reading pane */
.reading-section {
  margin: 0 0 var(--space-4);
}

.reading-section + .reading-section {
  padding-top: var(--space-3);
  border-top-width: 1px;
  border-top-style: solid;
}

.heading {
  display: block;
  font-family: var(--font-reading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 var(--space-1);
}

.citation {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-style: italic;
  margin: 0 0 var(--space-2);
}

.columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--measure)), 1fr));
  gap: var(--space-3) var(--space-4);
  align-items: start;
}

.column {
  min-width: 0;
}

.version-label {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin: 0 0 var(--space-2);
  padding-bottom: 0.35rem;
  border-bottom-width: 1px;
  border-bottom-style: solid;
}

.block {
  margin: 0 0 var(--space-1);
  max-width: var(--measure);
}

.block.refrain {
  font-style: italic;
}

/* Verse block: a fixed number column + a text column, so every verse's text
   starts at the same left edge (a straight margin) and continuation lines
   hang-indent under it -- matching the CLI/TUI reader. */
.block.verse {
  display: grid;
  grid-template-columns: 3rem 1fr;
  column-gap: 0.4rem;
  align-items: baseline;
}

.block.verse .vnum {
  min-width: 0;
  margin-right: 0;
  text-align: right;
}

.block.verse .vtext {
  min-width: 0;
}

.vnum {
  display: inline-block;
  min-width: 2.5em;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  vertical-align: super;
  margin-right: 0.35em;
}

/* Vertical display: versions side by side in columns, like the CLI
 * `compare` view. A fixed --vcols track count (not auto-fit) means the
 * grid's total width is always the page container's, so it wraps extra
 * versions onto further rows instead of ever forcing horizontal scroll. */
.display-vertical {
  display: grid;
  grid-template-columns: repeat(var(--vcols, 2), 1fr);
  gap: var(--space-3) var(--space-4);
  align-items: start;
}

.vcol {
  min-width: 0;
}

/* Interlinear display: one .ilverse block per chapter:verse key, one
 * .illine per version that carries it. */
.display-interlinear {
  display: flex;
  flex-direction: column;
}

.ilverse {
  margin: 0 0 var(--space-3);
  padding-top: var(--space-1);
  border-top-width: 1px;
  border-top-style: solid;
}

.ilverse:first-child {
  border-top-width: 0;
  padding-top: 0;
}

.illine {
  margin: 0.2rem 0 0.2rem var(--space-2);
}

.illine .version-label {
  display: inline;
  margin: 0 0.5em 0 0;
  padding-bottom: 0;
  border-bottom-width: 0;
}

a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.error {
  font-family: var(--font-ui);
}

@media (max-width: 40rem) {
  .page {
    padding: var(--space-2) var(--space-1) var(--space-3);
  }
  .heading {
    font-size: 1.25rem;
  }
  .display-vertical {
    grid-template-columns: 1fr;
  }
}