/* NeoApnea Monitor tokens, shared by the app and the README figures.
   A light, journal-figure look: white paper, ink text, hairline axes and a
   blue signal palette, with red kept for apnea and alarms only. */

@font-face { font-family: "IBM Plex Sans"; src: url("fonts/IBMPlexSans.woff2") format("woff2"); font-weight: 300 700; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/IBMPlexMono-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/IBMPlexMono-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/SourceSerif4.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }

:root {
  /* Surfaces: --ink is the page, --panel a figure panel, --raised a fill inside it. */
  --ink: #f3f4f6;
  --panel: #ffffff;
  --raised: #f6f7f9;
  --line: #e2e5ea;
  --line-strong: #c4cad3;
  --grid: #eef0f3;
  --text: #111827;
  --muted: #4b5563;
  --faint: #8a93a1;

  /* Signals */
  --breath: #1f4e9d;
  --pulse: #0f7b74;
  --spo2: #5b8bd0;
  --warn: #b7791f;
  --alarm: #c62f2f;

  /* Wiring colours used in the hardware figures. */
  --wire-5v: #c62f2f;
  --wire-gnd: #4b5563;
  --wire-sda: #1f4e9d;
  --wire-scl: #b7791f;

  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
}