/* Hallmark — base: fonts, reset, body */

/* — Google Fonts — all theme display & alt faces ——————————— */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..900;1,9..144,300..900&family=Playfair+Display:ital,wght@0,400..900;1,400..900&family=Instrument+Serif:ital@0;1&family=Cormorant+Garamond:ital,wght@0,300..700;1,300..700&family=Crimson+Pro:ital,wght@0,200..900;1,200..900&family=Newsreader:ital,opsz,wght@0,6..72,200..800;1,6..72,200..800&family=DM+Serif+Display:ital@0;1&family=Anton&family=Space+Grotesk:wght@300;400;500;600;700&family=Bricolage+Grotesque:opsz,wght@12..96,200..800&family=Plus+Jakarta+Sans:ital,wght@0,200..800;1,200..700&family=Hanken+Grotesk:ital,wght@0,100..900;1,100..900&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;1,400;1,500&family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;0,600;1,400&family=JetBrains+Mono:ital,wght@0,400;0,500;0,700;1,400&display=swap");

/* — Reset ———————————————————————————————————————————— */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
}

img, picture, svg, video { display: block; max-width: 100%; height: auto; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button { background: none; border: 0; padding: 0; cursor: pointer; }

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

/* — Theme transitions — targeted so type swap feels intentional —— */
html,
body,
.nav,
.opening__title,
.opening__sub,
.section__title,
.spec__name,
.spec__rule,
.tell,
.tell__viz,
.tell__meta,
.tell__name,
.tell__why,
.step__head,
.step__sub,
.install__body,
.foot,
.code,
.swatch,
.section__head,
.vs,
.vs__col,
.vs__caption,
hr.rule,
.themer,
.themer__btn {
  transition:
    background-color var(--dur-short) var(--ease-out),
    color var(--dur-short) var(--ease-out),
    border-color var(--dur-short) var(--ease-out);
}

/* — Body ————————————————————————————————————————————— */
html {
  background: var(--color-paper);
  color: var(--color-ink);
  /* Hard stop on horizontal overflow at the root. `clip` (not `hidden`)
     so descendants with `position: sticky` keep working. */
  overflow-x: clip;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-base);
  line-height: var(--lh-relaxed);
  letter-spacing: var(--tracking-normal);
  font-feature-settings: "ss01", "ss02", "cv01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100dvh;
  padding-inline: max(var(--page-gutter), env(safe-area-inset-left));
  padding-block-end: env(safe-area-inset-bottom);
  overflow-x: clip;
}

/* Long-word safety: hero display headlines must break inside long
   words on narrow viewports rather than push the layout wider than
   the viewport. Critical for hyphenated brand-style words like
   "AI-generated" in uppercase / heavy display faces. */
.hero__display,
.section__title,
.skill-row__title {
  overflow-wrap: anywhere;
  min-width: 0;
}

/* — Selection ——————————————————————————————————————— */
::selection {
  background: var(--color-accent);
  color: var(--color-paper);
}

/* — Typography primitives ——————————————————————————— */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--display-weight, 400);
  font-style: var(--display-style, normal);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-display);
  color: var(--color-ink);
  font-optical-sizing: auto;
  font-variation-settings:
    "opsz" var(--display-optical, 48),
    "SOFT" var(--display-soft, 0);
}

h1 { font-size: var(--text-display); }
h2 { font-size: var(--text-display-s); }
h3 { font-size: var(--text-xl); font-weight: 500; line-height: var(--lh-snug); letter-spacing: var(--tracking-tight); font-style: normal; font-variation-settings: normal; }
h4 { font-size: var(--text-md); font-weight: 500; line-height: var(--lh-snug); letter-spacing: var(--tracking-tight); font-style: normal; font-variation-settings: normal; }

p { max-width: var(--measure); }

strong { font-weight: 500; }

em { font-style: italic; }

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
  font-feature-settings: "tnum";
}

/* — Utility: label (small caps numbering) —————————— */
.label {
  font-family: var(--font-label);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-muted);
}

/* — Utility: rule (hairline divider) ———————————————— */
.rule {
  border: 0;
  border-top: var(--rule-hair) solid var(--color-rule);
  margin: 0;
}

.rule-strong {
  border-top-color: var(--color-rule-2);
  border-top-width: var(--rule-fine);
}

/* — Utility: serif (editorial emphasis) ———————————— */
.serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-optical-sizing: auto;
  font-variant-numeric: oldstyle-nums;
}

.serif-italic {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

/* — Utility: tabular numbers ————————————————————————— */
.tnum { font-variant-numeric: tabular-nums; }

/* — Utility: container ————————————————————————————————— */
.container {
  max-width: var(--page-max);
  margin-inline: auto;
  width: 100%;
}

/* — Orange square (the accent mark) ——————————————————— */
.mark {
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  background: var(--color-accent);
  vertical-align: 0.04em;
  transition: background-color var(--dur-short) var(--ease-out);
}