/* HeyHi design system: the company's own pages. The page header (shared/_page_header), About and the legal pages. */

/* ---------- Page header: a page's title band ---------- */
.page-header {
  padding-bottom: clamp(56px, 6vw, 104px);
  background: radial-gradient(50% 90% at 90% 0%, rgba(15, 58, 102, 0.5), transparent 72%), var(--bg);
}
.page-header .eyebrow { margin-bottom: 24px; }
.page-header__title { max-width: 14em; }
.page-header .lead { margin-top: 24px; }
.page-header__meta {
  margin-top: clamp(24px, 2.6vw, 36px);
  font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 12px; letter-spacing: 0.04em; color: var(--faint);
}
.page-header__meta time { margin-left: 6px; color: var(--fg); }

/* ---------- About: hero ---------- */
.about-hero {
  background:
    radial-gradient(55% 70% at 88% 0%, rgba(15, 58, 102, 0.55), transparent 72%),
    radial-gradient(40% 60% at 0% 100%, rgba(7, 43, 80, 0.45), transparent 70%),
    var(--bg);
  padding-bottom: clamp(56px, 6vw, 88px);
}
.about-hero .eyebrow { margin-bottom: clamp(22px, 2.4vw, 32px); }
.about-hero__title { max-width: 13.5em; }
.about-hero__ai { color: var(--signal); } /* the brand's amber, as on the homepage */
.about-hero__aside { display: block; color: var(--muted); }
.about-hero__lead { margin-top: clamp(28px, 3vw, 44px); max-width: 34em; color: color-mix(in srgb, var(--fg) 86%, var(--bg)); }
@media (min-width: 1024px) { .about-hero__lead { margin-left: calc(100% * 5 / 12); } }

/* A contents strip: the page's sections, each under its own rule */
.about-index { margin-top: clamp(56px, 7vw, 120px); }
.about-index__list { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 clamp(16px, 2vw, 28px); }
.about-index__list li { border-top: 1px solid var(--line-strong); transition: border-color 0.25s; }
.about-index__list li:hover { border-top-color: var(--voice); }
.about-index__list a {
  display: flex; align-items: baseline; gap: 12px; padding: 16px 0 4px;
  font-size: 15px; font-weight: 560; color: var(--muted); text-decoration: none; transition: color 0.2s;
}
.about-index__list a:hover { color: var(--fg); }
.about-index__n { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; font-weight: 500; letter-spacing: 0.06em; color: var(--accent-text); }
@media (max-width: 720px) {
  .about-index__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-index__list a { padding: 14px 0; }
}

/* ---------- About: the name, as a dictionary entry ---------- */
.about-name__layout { display: grid; gap: clamp(44px, 5vw, 64px); align-items: center; }
.about-name__head { margin-bottom: 0; }
@media (min-width: 1024px) {
  .about-name__layout { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(56px, 6vw, 112px); }
}

.lexicon {
  display: grid; gap: clamp(26px, 3vw, 34px); min-width: 0; margin: 0; padding: clamp(24px, 3.6vw, 48px);
  border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--panel-shadow);
}
.lexicon__entry { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 22px; padding-bottom: clamp(22px, 2.6vw, 30px); border-bottom: 1px solid var(--line); }
.lexicon__word { font-size: clamp(2.75rem, 1.7rem + 3.4vw, 4.75rem); font-stretch: 110%; font-weight: 760; letter-spacing: -0.035em; line-height: 0.95; color: var(--fg); }
.lexicon__dot { margin-inline: 0.05em; color: var(--faint); font-weight: 400; }
.lexicon__ipa { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: clamp(1rem, 0.9rem + 0.45vw, 1.3rem); letter-spacing: 0.02em; color: var(--accent-text); }

.lexicon__senses { list-style: none; display: grid; gap: 20px; counter-reset: sense; }
.lexicon__sense { counter-increment: sense; display: grid; grid-template-columns: 2.1rem minmax(0, 1fr); gap: 4px 0; align-items: baseline; }
.lexicon__sense::before {
  content: counter(sense); grid-row: span 2;
  font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 13px; font-weight: 600; color: var(--fg);
}
.lexicon__pos { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); }
.lexicon__def { font-size: clamp(1.02rem, 0.98rem + 0.2vw, 1.13rem); line-height: 1.5; color: var(--fg); }
.lexicon__usage { color: var(--muted); }

/* The key, as a dictionary prints at the foot of a page: drop the h and Hey and Hi become A and I */
.lexicon__key { display: grid; gap: 16px; padding: clamp(18px, 2.2vw, 26px) clamp(18px, 2.4vw, 28px); border-radius: var(--r-md); background: var(--day-0); }
.lexicon__key-title { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
/* A small table: each row's word, its sound, and the letter it becomes, in aligned columns */
.lexicon__pairs { display: grid; grid-template-columns: repeat(5, max-content); justify-content: start; align-items: baseline; gap: 12px 14px; }
.lexicon__pair { display: contents; }
.lexicon__said, .lexicon__letter { font-size: clamp(1.3rem, 1.05rem + 0.8vw, 1.75rem); font-weight: 700; font-stretch: 108%; letter-spacing: -0.015em; line-height: 1; }
.lexicon__said { color: var(--fg); }
.lexicon__letter { margin-left: 4px; color: var(--accent-text); }
.lexicon__sound { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 13.5px; font-weight: 400; letter-spacing: 0.02em; color: var(--muted); }
.lexicon__h { color: var(--faint); opacity: 0.7; }
.lexicon__arrow { align-self: center; width: 18px; height: 18px; margin-inline: 6px 2px; color: var(--faint); }

/* ---------- About: what we make, as an index of products ---------- */
.about-products__list { list-style: none; border-top: 1px solid var(--line-strong); }
.about-product {
  position: relative; display: grid; align-items: start; gap: 10px 16px;
  grid-template-columns: 2rem minmax(0, 1fr);
  grid-template-areas: "n name" ". meta" ". tagline";
  padding: 24px 0 26px; border-bottom: 1px solid var(--line);
}
.about-product__n { grid-area: n; padding-top: 0.7em; font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11.5px; letter-spacing: 0.06em; color: var(--faint); }
.about-product__name { grid-area: name; min-width: 0; font-size: clamp(1.6rem, 1.1rem + 1.5vw, 2.6rem); font-stretch: 110%; font-weight: 730; letter-spacing: -0.032em; line-height: 1.04; }
.about-product__name a { color: var(--fg); text-decoration: none; }
.about-product__name a::after { content: ""; position: absolute; inset: 0; } /* the whole row opens the product */
.about-product__name a:focus-visible { outline: none; }
.about-product:has(a:focus-visible) { outline: 2px solid var(--voice); outline-offset: 4px; border-radius: var(--r-xs); }
.about-product__brand { color: var(--faint); transition: color 0.25s; }
.about-product__meta { grid-area: meta; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.about-product__status { display: inline-flex; }
.about-product__kind { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); }
.about-product__tagline { grid-area: tagline; max-width: 34em; margin-top: 2px; font-size: 16.5px; line-height: 1.5; color: var(--muted); }
.about-product__arrow { grid-area: arrow; display: none; width: 22px; height: 22px; color: var(--faint); transition: transform 0.3s var(--ease), color 0.2s; }
/* On hover, a soft band of light across the row, fading out before the edges */
.about-product::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity 0.3s;
  background: linear-gradient(90deg, transparent, rgba(140, 180, 230, 0.06) 18%, rgba(140, 180, 230, 0.06) 82%, transparent);
}
.about-product:hover::before { opacity: 1; }
.about-product:hover .about-product__brand { color: var(--muted); }
.about-product:hover .about-product__arrow { transform: translateX(4px); color: var(--signal); }
@media (min-width: 900px) {
  .about-product {
    gap: 10px 32px; padding: 34px 0;
    grid-template-columns: 3rem minmax(0, 1fr) minmax(0, 1.2fr) 7.5rem 1.5rem;
    grid-template-areas: "n name tagline status arrow" "n kind tagline status arrow";
  }
  .about-product__meta { display: contents; }
  .about-product__status { grid-area: status; }
  .about-product__kind { grid-area: kind; }
  .about-product__n, .about-product__tagline, .about-product__status, .about-product__arrow { align-self: center; padding-top: 0; margin-top: 0; }
  .about-product__tagline { font-size: 17px; }
  .about-product__arrow { display: block; justify-self: end; }
}

/* ---------- About: how we build, as a numbered ledger ---------- */
/* The heading breaks after its first clause, each clause balanced on its own */
.about-principles__line { display: block; }
.about-principles__list { list-style: none; display: grid; gap: 0 clamp(32px, 5vw, 88px); }
@media (min-width: 768px) { .about-principles__list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.about-principle { display: grid; grid-template-columns: 3rem minmax(0, 1fr); align-content: start; gap: 10px 0; padding: clamp(24px, 2.6vw, 32px) 0 clamp(32px, 3.4vw, 44px); border-top: 1px solid var(--line-strong); }
.about-principle__n { grid-row: span 2; padding-top: 0.55em; font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 12px; font-weight: 500; letter-spacing: 0.06em; color: var(--accent-text); }
.about-principle__title { font-size: clamp(1.4rem, 1.15rem + 0.9vw, 1.95rem); font-stretch: 106%; font-weight: 700; letter-spacing: -0.025em; line-height: 1.15; }
.about-principle__text { max-width: 34em; font-size: 17px; line-height: 1.6; color: var(--muted); }

/* ---------- About: where we are ---------- */
.about-where {
  background: radial-gradient(60% 80% at 100% 100%, rgba(15, 58, 102, 0.5), transparent 70%), var(--bg);
}
.about-where__layout { display: grid; gap: clamp(44px, 5vw, 64px); }
.about-where__head { margin-bottom: 0; }
.about-where__title { max-width: 9em; }
@media (min-width: 1024px) {
  .about-where__layout { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(56px, 6vw, 112px); align-items: center; }
}
.about-contact { display: grid; gap: 28px; justify-items: start; }
.about-contact__list { width: 100%; border-top: 1px solid var(--line-strong); }
.about-contact__row { display: grid; grid-template-columns: 7.25rem minmax(0, 1fr); align-items: baseline; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.about-contact__label {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint);
}
.about-contact__label .icon { width: 14px; height: 14px; }
.about-contact__row dd { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin: 0; min-width: 0; }
.about-contact__value { font-size: 18px; font-weight: 600; letter-spacing: -0.005em; color: var(--fg); text-decoration: none; overflow-wrap: anywhere; }
a.about-contact__value { transition: color 0.2s; }
a.about-contact__value:hover { color: var(--signal); }
.about-contact__value--mono { font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 17px; font-weight: 500; letter-spacing: 0.02em; }
.about-contact__note { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; letter-spacing: 0.03em; color: var(--muted); }
.about-contact__note .dot { width: 6px; height: 6px; color: var(--ok); }

/* ---------- Legal pages: a reading column with its contents beside it ---------- */
.legal { --bg: var(--day-1); --prose: color-mix(in srgb, var(--fg) 84%, var(--bg)); padding-block: clamp(56px, 6vw, 104px) var(--section-y); }
.legal__layout { display: grid; gap: 40px; }
.legal__toc { display: none; }
@media (min-width: 1024px) {
  .legal__layout { grid-template-columns: 14.5rem minmax(0, 1fr); gap: clamp(48px, 7vw, 128px); align-items: start; }
  .legal__toc { display: block; position: sticky; top: calc(var(--nav-h) + 40px); }
}
.legal__toc-title { margin-bottom: 14px; font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 11px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.legal__toc ol { list-style: none; counter-reset: toc; border-left: 1px solid var(--line); }
.legal__toc li { counter-increment: toc; }
.legal__toc a {
  display: flex; align-items: baseline; gap: 10px; margin-left: -1px; padding: 6px 0 6px 16px; border-left: 1px solid transparent;
  font-size: 14px; line-height: 1.4; color: var(--muted); text-decoration: none; transition: color 0.2s, border-color 0.2s;
}
.legal__toc a::before { content: counter(toc, decimal-leading-zero); flex: none; font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 10.5px; color: var(--faint); }
.legal__toc a:hover { color: var(--fg); border-left-color: var(--fg); }

/* Long-form text, about 68 characters to the line */
.prose { max-width: 32.5em; font-size: clamp(1.03rem, 0.99rem + 0.2vw, 1.1rem); line-height: 1.75; color: var(--prose, var(--fg)); counter-reset: section; }
.prose h2 {
  counter-increment: section; display: flex; align-items: baseline; gap: 14px; margin: 2.6em 0 0.75em;
  font-size: clamp(1.3rem, 1.15rem + 0.6vw, 1.6rem); font-stretch: 106%; font-weight: 700; letter-spacing: -0.02em; line-height: 1.25; color: var(--fg);
}
.prose h2::before { content: counter(section, decimal-leading-zero); flex: none; min-width: 1.6rem; font-family: var(--font-mono); font-stretch: var(--mono-w); font-size: 12px; font-weight: 500; letter-spacing: 0.06em; color: var(--accent-text); }
.prose > :first-child { margin-top: 0; }
.prose p + p, .prose p + ul, .prose ul + p { margin-top: 1.05em; }
.prose ul { list-style: none; display: grid; gap: 0.5em; }
.prose li { position: relative; padding-left: 1.6em; }
.prose li::before { content: ""; position: absolute; left: 0.2em; top: calc(0.875em - 1px); width: 0.6em; height: 2px; border-radius: 1px; background: var(--accent-text); }
.prose strong { font-weight: 650; color: var(--fg); }
.prose a { color: var(--accent-text); font-weight: 560; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
.prose a:hover { text-decoration-thickness: 2px; }