/* Dark-only brand. --signal (#0f67f5, 4.13:1 on --void) is for fills, the mark, and large display text; body-size text links use --signal-hi. */

@font-face { font-family: 'Archivo'; src: url(/assets/fonts/archivo-latin-wdth-normal.woff2) format('woff2'); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url(/assets/fonts/jetbrains-mono-latin-wght-normal.woff2) format('woff2'); font-weight: 100 800; font-display: swap; }
@font-face { font-family: 'Departure Mono'; src: url(/assets/fonts/DepartureMono-Regular.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Instrument Serif'; src: url(/assets/fonts/instrument-serif-latin-400-italic.woff2) format('woff2'); font-style: italic; font-weight: 400; font-display: swap; }

:root {
  color-scheme: dark;
  /* ink */
  --void: #050608;
  --carbon: #0a0c10;
  --graphite: #11141a;
  --hairline: #1e232c;
  --hairline-2: #2c333e;
  --steel: #7a8390;
  --silver: #a9b1bc;
  --bone: #e9edf2;
  --signal: #0f67f5;         /* SWARM BLUE · RGB 15 103 245 */
  --signal-hi: #4d8dff;
  --signal-lo: #0a3d94;
  --signal-ghost: rgb(15 103 245 / 0.12);
  /* thermal — reserved for heat: contention, risk, conflict */
  --heat-0: #1b1f6b;
  --heat-1: #5b3df5;
  --heat-2: #d455c9;
  --heat-3: #ff6b4a;
  --heat-4: #ffc94d;
  --thermal: linear-gradient(90deg, var(--heat-0), var(--heat-1) 25%, var(--heat-2) 50%, var(--heat-3) 75%, var(--heat-4));
  --chrome: linear-gradient(180deg, #f4f6f9 0%, #9aa3ae 38%, #2a2f37 52%, #c9d0d8 64%, #f4f6f9 100%);
  /* semantic */
  --ok: var(--signal-hi);
  --warn: var(--heat-4);
  --fail: var(--heat-3);
  --add-bg: rgb(15 103 245 / 0.14);
  --del-bg: rgb(255 107 74 / 0.12);

  /* syntax — muted hues for code rendering; never the thermal heat scale */
  --syn-com: #6e7884;
  --syn-str: #8fc79a;
  --syn-num: #d9b380;
  --syn-key: var(--signal-hi);
  --syn-typ: #b3a7e8;

  /* type */
  --f-sans: 'Archivo', ui-sans-serif, system-ui, sans-serif;
  --f-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --f-hud: 'Departure Mono', 'JetBrains Mono', ui-monospace, monospace;
  --f-voice: 'Instrument Serif', ui-serif, Georgia, serif;
  --t-hud: 11px; --t-xs: 12px; --t-sm: 14px; --t-md: 16px; --t-lg: 20px;
  --t-xl: 28px; --t-2xl: 40px; --t-3xl: 64px; --t-4xl: 112px;
  --t-5xl: clamp(88px, 15.5vw, 232px);

  /* space · 4px base */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px;
  --s7: 48px; --s8: 64px; --s9: 96px; --s10: 128px;
  --gutter: 24px;
  --page: 1440px;
  --margin: clamp(16px, 3.4vw, 48px);
  --radius: 0px;              /* brutalist: no radii, ever */
  --ease: cubic-bezier(.2, .7, 0, 1);
  --step: steps(4, end);      /* telemetry ticks */
}