/* Consumer shadow of typikon's static/css/fonts.css (theme.toml's Zola
 * static-shadow rule: a same-path file in the consumer's own static/
 * wins). Delta from the theme copy: two metric-matched fallback
 * @font-face declarations (DESIGN-v1.3 §2.3) appended at the end — the
 * four families above are unchanged, re-diff them against
 * themes/typikon/static/css/fonts.css on every typikon-refresh.
 *
 * Self-hosted webfonts (OFL-1.1). All families subsetted to:
 *   - Latin (U+0000-00FF)
 *   - Greek (U+0370-03FF) and Greek Extended (U+1F00-1FFF) for serif families
 *
 * Strict CSP `font-src 'self'` ensures no external font CDN is reachable
 * even if a stray @font-face URL is added by mistake.
 */

/* Cormorant Garamond — display */
@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/fonts/cormorant-garamond-400.woff2?h=9a842d62d34ddfa36c1a&v=2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/fonts/cormorant-garamond-500.woff2?h=b0606158f37f6e2a243c&v=2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/fonts/cormorant-garamond-600.woff2?h=cbc6f0618c997aece547&v=2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/fonts/cormorant-garamond-400-italic.woff2?h=6bb8b0f40ab6cbef1bfa&v=2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}

/* Spectral — body */
@font-face {
  font-family: 'Spectral';
  src: url('/fonts/spectral-400.woff2?h=0d7b708c4b21eba1ec7d&v=2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: 'Spectral';
  src: url('/fonts/spectral-500.woff2?h=945ad1f27bd3022121b5&v=2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: 'Spectral';
  src: url('/fonts/spectral-400-italic.woff2?h=e8d6035ec5f41658bc84&v=2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: 'Spectral';
  src: url('/fonts/spectral-500-italic.woff2?h=ee7b7e196484668b2c42&v=2') format('woff2');
  font-weight: 500;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0370-03FF, U+1F00-1FFF;
}

/* IBM Plex Mono — specs */
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/fonts/ibm-plex-mono-400.woff2?h=8130faf9255d5d7de993&v=2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/fonts/ibm-plex-mono-500.woff2?h=2e4f14e6ba4631a2b351&v=2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF;
}

/* === Metric-matched fallback faces (§2.3, DESIGN-v1.3) ===
 *
 * font-display: swap (above) shows a system font until Spectral/Plex
 * Mono load, then reflows — worst at the v1.2 display sizes (39.8px
 * home h1). These two faces close that gap: local() system fonts
 * carrying the SAME size-adjust/ascent-override/descent-override/
 * line-gap-override as the real webfont, so the swap becomes
 * geometrically invisible instead of just delayed. local() sources are
 * not a network fetch — font-src is untouched regardless of the CSP's
 * stance on it.
 *
 * Values measured 2026-07-21 against the actual vendored woff2 files
 * (spectral-400.woff2, ibm-plex-mono-400.woff2) and the real local
 * fallback fonts (Georgia, Courier New) via fontTools reading each
 * font's head/hhea/OS-2 tables, using the size-adjust + metric-override
 * formula from the fontaine/capsize reference implementation
 * (github.com/unjs/fontaine packages/fontaine/src/css.ts
 * generateFontFace, credited there to seek-oss/capsize):
 *
 *   sizeAdjust    = (target.xAvgCharWidth / target.unitsPerEm)
 *                   / (fallback.xAvgCharWidth / fallback.unitsPerEm)
 *   adjustedEm    = target.unitsPerEm * sizeAdjust
 *   ascentOverride  = target.hhea.ascent / adjustedEm
 *   descentOverride = abs(target.hhea.descent) / adjustedEm
 *   lineGapOverride = target.hhea.lineGap / adjustedEm
 *
 * Reproducible: fontTools (`pip install fonttools` / `uv tool install
 * fonttools`) against spectral-400.woff2 + ibm-plex-mono-400.woff2 (both
 * vendored under themes/typikon/static/fonts/) and Georgia/Courier New
 * (any real copy of either font — metrics are identical across sources,
 * both are stable, unchanged-for-decades system fonts).
 */
@font-face {
  font-family: 'Spectral Fallback';
  src: local('Georgia');
  size-adjust: 106.77%;
  ascent-override: 99.18%;
  descent-override: 43.36%;
  line-gap-override: 0%;
}

@font-face {
  font-family: 'Plex Mono Fallback';
  src: local('Courier New');
  size-adjust: 99.98%;
  ascent-override: 102.52%;
  descent-override: 27.5%;
  line-gap-override: 0%;
}