/* LEDGERLINE tokens: the single source of truth. Re-skin here first. */

@font-face {
  font-family: "Inter Tight";
  src: url("../fonts/inter-tight-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fragment Mono";
  src: url("../fonts/fragment-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  /* primitives: ledger paper, pencil, double-entry green.
     The debit red exists ONLY for the demo ledger table; nothing else may use it. */
  --paper: #faf7f0;
  --paper-2: #f3efe4;
  --paper-3: #ebe6d7;
  --pencil: #3a3a35;
  --pencil-2: #2f2f2b;
  --pencil-3: #262623;
  --graphite: #6b6a5f;
  --graphite-2: #b3b0a4;
  /* the entry ink is a true double-entry green: the green a ruled ledger
     is printed in, not a signal lamp and not anyone else's teal, cyan,
     phosphor, or spring. deep sits at LCH 35.1 / 21.8 / 159.8; bright
     at 69.9 / 31.8 / 160.0. */
  --entry-green: #73b996;      /* bright: for pencil surfaces + large marks */
  --entry-green-deep: #305b46; /* deep: for paper surfaces, AA at label sizes */
  --debit-red: #a63a2b;        /* demo ledger only */

  /* semantic (paper sheet is the default) */
  --bg: var(--paper);
  --bg-2: var(--paper-2);
  --fg: var(--pencil);
  --muted: var(--graphite);
  --line: rgba(58, 58, 53, 0.16);
  --line-strong: rgba(58, 58, 53, 0.55);
  --rule: rgba(58, 58, 53, 0.09); /* the faint sheet grid */
  --accent: var(--entry-green-deep);
  --focus: #274938;

  /* type: Inter Tight speaks, Fragment Mono counts */
  --font-sans: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --font-figures: "Fragment Mono", "SF Mono", Menlo, monospace;
  --t-display: clamp(2.3rem, 6.5vw, 5.25rem);
  --t-h2: clamp(1.6rem, 3.4vw, 2.6rem);
  --t-h3: clamp(1.15rem, 2vw, 1.5rem);
  --t-lead: clamp(1.1rem, 1.7vw, 1.35rem);
  --t-body: 1.0417rem;
  --t-small: 0.875rem;
  --t-fig: 0.78rem;
  --lh-tight: 1.02;
  --lh-heading: 1.08;
  --lh-body: 1.58;
  --track-fig: 0.08em;

  /* space: rows first. --row is the ledger line-height unit. */
  --row: 2.5rem;
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;
  --section-pad: clamp(4.5rem, 11vh, 8rem);
  --gutter-col: clamp(2.4rem, 5vw, 3.6rem); /* the row-number gutter */
  --edge: clamp(1rem, 3.5vw, 3rem);
  --measure: 40rem;
  --max-w: 82rem;

  /* shape */
  --r-1: 3px;
  --r-2: 8px;
  --r-tab: 8px 8px 0 0;

  /* motion */
  --dur-1: 150ms;
  --dur-2: 320ms;
  --dur-3: 600ms;
  --ease-out: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-inout: cubic-bezier(0.83, 0, 0.17, 1);

  /* layers */
  --z-bar: 40;
  --z-sheet-index: 50;
  --z-skip: 60;
}

/* pencil theme: any element with data-theme="pencil" flips the semantic set */
[data-theme="pencil"] {
  --bg: var(--pencil-2);
  --bg-2: var(--pencil-3);
  --fg: var(--paper);
  --muted: var(--graphite-2);
  --line: rgba(250, 247, 240, 0.2);
  --line-strong: rgba(250, 247, 240, 0.62);
  --rule: rgba(250, 247, 240, 0.08);
  --accent: var(--entry-green);
  --focus: #a8ddc1;
}