/* Broadsheet — design-system tokens and component classes. */
@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,wght@0,400;0,600;1,400&display=swap');

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201e1d;
  --color-accent: #0088b0;
  --color-accent-2: #d6006c;
  --color-divider: color-mix(in srgb, #201e1d 16%, transparent);

  /* Tonal ramps — generated in OKLCH on one shared lightness scale, so the
     same step of any role matches the others in visual value. */
  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-500: #9b9797;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
  --color-neutral-900: #2d2b2b;

  --color-accent-100: #e9f8ff;
  --color-accent-200: #cbeeff;
  --color-accent-300: #99e0ff;
  --color-accent-400: #62c5ee;
  --color-accent-500: #38a6cf;
  --color-accent-600: #1186ac;
  --color-accent-700: #006786;
  --color-accent-800: #004961;
  --color-accent-900: #0a303e;

  --color-accent-2-100: #fff1f4;
  --color-accent-2-200: #ffdee6;
  --color-accent-2-300: #ffc0d0;
  --color-accent-2-400: #ff90b1;
  --color-accent-2-500: #ff458e;
  --color-accent-2-600: #d82071;
  --color-accent-2-700: #aa0b56;
  --color-accent-2-800: #790e3d;
  --color-accent-2-900: #4b1528;

  /* The third process ink — completes the CMYK print-treatment set used by
     the plate headline/numeral effects. Print treatment color only; body
     copy and chrome never take it. */
  --color-process-yellow: #edbb00;

  --font-heading: "Source Serif 4", system-ui, sans-serif;
  --font-heading-weight: 600;
  --font-body: "Source Serif 4", system-ui, sans-serif;

  --space-1: 5.0px;
  --space-2: 10.0px;
  --space-3: 15.0px;
  --space-4: 20.0px;
  --space-6: 30.0px;
  --space-8: 40.0px;

  --radius-sm: 1px;
  --radius-md: 2px;
  --radius-lg: 4px;

  /* Elevation — derived from the ground: soft ink-tinted shadows on a
     light theme, a hairline edge + ambient darkness on a dark one. */
  --shadow-sm: 0 1px 2px color-mix(in srgb, #2d2b2b 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2d2b2b 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2d2b2b 22%, transparent);
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
}
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); }

/* The plate numeral — display figures set as misregistered process
   plates. THREE plates — C, M, Y only, no black plate — so the dark core
   comes entirely from the C×M×Y multiply overlap, with the fringes the
   registration drift. Markup: a .cmyk-num holding a .paper span (the white
   of the sheet: the glyph's union, built from offset text-shadow copies)
   and three .plate spans. The construction carries its own ground
   (--cmyk-num-ground, defaulting to paper) painted on its padding box, so
   the multiply plates always have their backdrop even inside an isolated
   stacking context; the padding bleeds wider than any plate offset and
   the negative margin hands the layout box back. Offsets are em-scaled to
   the glyph. The .paper span carries the text once for assistive tech;
   the .plate spans are aria-hidden repeats. */
.cmyk-num{--cmyk-num-ground:var(--color-bg);
  position:relative;width:fit-content;line-height:0.9;
  font-feature-settings:"pnum" 1;
  background:var(--cmyk-num-ground);padding:0.12em;margin:-0.12em}
.cmyk-num .paper{color:var(--color-bg); /* the white of the sheet — always paper,
  whatever the ground: the plates read as printed on paper even when the
  surrounding page is ink */
  text-shadow:0.036em 0.025em 0 var(--color-bg),-0.031em -0.023em 0 var(--color-bg)}
.cmyk-num .plate{position:absolute;inset:0.12em;mix-blend-mode:multiply;
  text-box:trim-both cap alphabetic /* the host trims to its cap box; each
  absolute plate must trim its own line the same way, or its glyphs sit a
  half-leading below the paper union */}
.cmyk-num .plate-c{color:var(--color-accent)}

/* The plate headline — the same three-plate construction as .cmyk-num —
   paper span carrying the real text, C/M/Y plate repeats, dark core from
   the multiply overlap — at HALF the numeral's offsets: the serif's
   display hairlines are thinner than the numeral strokes the spread was
   measured on, and the full offsets swallow them whole — recut for
   display headlines that sit in running text blocks on the page's own
   paper: no ground painting and no padding bleed, no width:fit-content
   and no line-height override (the host display class owns its metrics —
   apply this to each .line, which is position:relative for its plates),
   and the plates are inert to the hand (pointer-events/user-select none,
   so a triple-click selects the headline once, not four times). Plates
   take the same pointer lean as .cmyk-num. */
.cmyk-head{position:relative}
.cmyk-head .paper{color:var(--color-bg);
  text-shadow:0.027em 0.0185em 0 var(--color-bg),-0.0245em -0.0175em 0 var(--color-bg)
  /* the union's copies sit at the construction's halved plate offsets
     PLUS the full lean (0.018+0.009 / 0.0125+0.006, and mirrored), so
     the union still backs the plates at viewport-edge lean — invisible
     on the page's own paper, load-bearing on any other ground */}
.cmyk-head .plate{position:absolute;inset:0;mix-blend-mode:multiply;
  pointer-events:none;user-select:none;
  text-box:trim-both cap alphabetic /* match the host's trim, or the
  plates sit a half-leading below the paper union */}
.cmyk-head .plate-c{color:var(--color-accent)}
.cmyk-head .plate-m{color:var(--color-accent-2);
  translate:calc(0.018em + 0.009em*var(--press-nx, 0)) calc(0.0125em + 0.006em*var(--press-ny, 0))}
.cmyk-head .plate-y{color:var(--color-process-yellow);
  translate:calc(-0.0155em + 0.009em*var(--press-nx, 0)) calc(-0.0115em + 0.006em*var(--press-ny, 0))}
.cmyk-num .plate-m{color:var(--color-accent-2);
  translate:calc(0.036em + 0.018em*var(--press-nx, 0)) calc(0.025em + 0.0125em*var(--press-ny, 0))}
.cmyk-num .plate-y{color:var(--color-process-yellow);
  translate:calc(-0.031em + 0.018em*var(--press-nx, 0)) calc(-0.023em + 0.0125em*var(--press-ny, 0))}
/* --press-nx/--press-ny: the pointer lean as a bare -1..1 factor,
   published on :root by js/press-plates.js and zero whenever that driver
   stands down (reduced motion, no fine hover pointer). Each construction
   scales the lean to its own spread so the moving plates drift a breath
   toward the cursor and the C plate holds. */

/* ══════════════════════════════════════════════════════════════════════════
   Components — built with the tokens above. Plain CSS on plain HTML: no
   build step.
   ══════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-size: 15px; line-height: 1.55; font-weight: 400; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2);
}
h1 { font-size: 42px; }
h2 { font-size: 32px; }
h3 { font-size: 25px; }
h4 { font-size: 20px; }
h5 { font-size: 16px; }
h6 { font-size: 13px; }
h6 { letter-spacing: 0.08em; text-transform: uppercase; }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent); text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
figure { margin: 0; }
figcaption {
  font-size: 11px; margin-top: var(--space-1);
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.text-muted { color: color-mix(in srgb, var(--color-text) 55%, transparent); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

/* — rules — */
.hr {
  height: 1px; border: 0; margin: var(--space-4) 0;
  background: var(--color-divider);
}

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}
.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-accent-600); }
.btn-primary:active { background: var(--color-accent-700); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-block { width: 100%; margin-top: var(--space-2); }

/* — navigation — */
.nav {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: none;
}
.nav-brand {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 18px; margin-right: auto;
}
.nav a { color: inherit; text-decoration: none; font-size: 14px; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-accent); }