/* Self-hosted web fonts — replaces Google Fonts for faster loading and zero CLS */

/* Red Hat Display (variable font, all weights 400–900 in one file)
   font-display: optional — if the font isn't ready within ~100ms, the browser
   commits to the fallback permanently for this page load. Zero font-swap CLS. */
@font-face {
  font-family: 'Red Hat Display';
  font-style: normal;
  font-weight: 400 900;
  font-display: optional;
  src: url('../fonts/red-hat-display-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Red Hat Display';
  font-style: normal;
  font-weight: 400 900;
  font-display: optional;
  src: url('../fonts/red-hat-display-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* JetBrains Mono (variable font, all weights 400–800 in one file)
   font-display: swap — code blocks aren't above the fold; a brief swap is fine. */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Metric-matched fallback fonts — sized so the line box matches the web font.
   When the web font hasn't loaded (font-display: optional timeout or slow
   connection), the fallback renders with near-identical vertical metrics,
   preventing layout shift on font swap. */

/* Red Hat Display fallback — match Red Hat's 1.323em line box:
   size-adjust 103% × (98.8% + 29.6%) = 1.323 */
@font-face {
  font-family: 'Red Hat Display Fallback';
  src: local('Segoe UI'), local('system-ui'), local('-apple-system'), local('Helvetica Neue'), local('sans-serif');
  size-adjust: 103%;
  ascent-override: 98.8%;
  descent-override: 29.6%;
  line-gap-override: 0%;
}

/* JetBrains Mono fallback — match JetBrains' 1.243em line box:
   size-adjust 92% × (106.3% + 28.8%) = 1.243 */
@font-face {
  font-family: 'JetBrains Mono Fallback';
  src: local('Consolas'), local('ui-monospace'), local('Menlo'), local('monospace');
  size-adjust: 92%;
  ascent-override: 106.3%;
  descent-override: 28.8%;
  line-gap-override: 0%;
}