/* ------------------------------------------------------------------
   Built for Someone — landing page
   Mobile-first. One page, two states (see <html data-state>).
   Palette taken from the cover: cream paper, near-black ink, gold.
   ------------------------------------------------------------------ */

:root {
  --paper: #efebe3;
  --paper-deep: #e4dfd3;
  --ink: #141414;
  --ink-soft: #46443f;
  --ink-mute: #77746c;
  --rule: #d3cdbf;
  --gold: #b8862b;
  --gold-deep: #94691c;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --wrap: 68rem;
  --gutter: 1.25rem;
  --radius: 3px;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* State switching ---------------------------------------------------- */
[data-state="prelaunch"] .only-launch { display: none !important; }
[data-state="launch"]    .only-prelaunch { display: none !important; }

/* Utilities ---------------------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.gold { color: var(--gold); }

.eyebrow {
  font-family: var(--display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.fine {
  font-size: 0.8125rem;
  color: var(--ink-mute);
  line-height: 1.5;
  margin-top: 0.75rem;
}

.link-quiet {
  color: var(--ink-soft);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
}
.link-quiet:hover { color: var(--gold-deep); text-decoration-color: currentColor; }

/* Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  line-height: 1.2;
  padding: 0.95rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, transform 120ms ease;
  min-height: 3.25rem;
}
.btn--primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--primary:hover { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.btn--primary:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

/* Masthead ----------------------------------------------------------- */
.masthead { padding: 1.1rem 0; }
.masthead__inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
}
.wordmark {
  font-family: var(--display);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

/* Hero --------------------------------------------------------------- */
.hero { padding: 2.5rem 0 3.5rem; }
.hero__grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; align-items: center; }
.hero__title {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(2.1rem, 1.3rem + 4.2vw, 4.1rem);
  line-height: 1.0;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  text-wrap: balance;
}
.hero__sub {
  margin-top: 1.25rem;
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.2rem);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 34em;
}

/* Cover -------------------------------------------------------------- */
.hero__cover { display: flex; justify-content: center; margin-top: 0.5rem; }
.cover-img {
  display: block;
  width: min(56vw, 14rem);
  aspect-ratio: 5 / 8;
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08), 0 14px 36px -10px rgba(20,20,20,0.4), inset 4px 0 6px -4px rgba(255,255,255,0.5);
}
/* Calls to action --------------------------------------------------- */
.cta { margin-top: 1.75rem; display: flex; flex-direction: column; gap: 0.6rem; max-width: 34rem; }
.cta .btn { width: 100%; }
.btn--secondary { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--secondary:hover { background: var(--ink); color: var(--paper); }
.btn--gold { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.btn--gold:hover { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.btn--onDark { color: var(--paper); border-color: rgba(239,235,227,0.6); }
.btn--onDark:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.masthead__link { font-size: 0.8125rem; color: var(--ink-mute); text-decoration: none; white-space: nowrap; }
.masthead__link:hover { color: var(--gold-deep); text-decoration: underline; text-underline-offset: 3px; }

/* Argument ----------------------------------------------------------- */
.argument { background: var(--ink); color: var(--paper); padding: 3.5rem 0; }
.argument__list { display: grid; grid-template-columns: 1fr; gap: 2.25rem; }
.argument__item { position: relative; padding-top: 1rem; border-top: 1px solid rgba(239,235,227,0.18); }
.argument__num {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin-bottom: 0.6rem;
}
.argument__head {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.35rem, 1.1rem + 1vw, 1.7rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  text-wrap: balance;
}
.argument__item p { color: #c9c4b8; }

/* Contents ----------------------------------------------------------- */
.contents { padding: 3.5rem 0; }
.contents__grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem 3rem; }
.contents__lead { color: var(--ink-soft); margin-bottom: 1rem; max-width: 36em; }
.contents__list { counter-reset: item; align-self: start; }
.contents__list li {
  counter-increment: item;
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.5rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--rule);
  font-size: 1.0625rem;
}
.contents__list li:last-child { border-bottom: 1px solid var(--rule); }
.contents__list li::before {
  content: counter(item, decimal-leading-zero);
  font-family: var(--display);
  font-weight: 700;
  color: var(--gold);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  padding-top: 0.25rem;
}

/* Endorsements ------------------------------------------------------- */
.endorsements { padding: 0 0 3.5rem; }
.endorsements__list { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
.endorsement { padding: 1.5rem; background: #fff; border: 1px solid var(--rule); border-radius: var(--radius); }
.endorsement blockquote { margin: 0 0 0.75rem; font-size: 1.15rem; line-height: 1.45; }
.endorsement cite { font-style: normal; font-size: 0.875rem; color: var(--ink-mute); }

/* Author ------------------------------------------------------------- */
.author { background: var(--paper-deep); padding: 3.5rem 0; }
.author__grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; align-items: center; }
.author__photo { width: 9rem; height: 9rem; object-fit: cover; object-position: center 20%; border-radius: 50%; background: var(--rule); box-shadow: 0 0 0 4px var(--paper), 0 0 0 5px var(--rule); }
.author__copy p { color: var(--ink-soft); font-size: 1.0625rem; max-width: 36em; }

/* FAQ ---------------------------------------------------------------- */
.faq { padding: 3.5rem 0; background: var(--paper-deep); }
.faq__grid { display: grid; grid-template-columns: 1fr; gap: 1rem 3rem; }
.faq__item { border-top: 1px solid var(--rule); }
.faq__item:last-child { border-bottom: 1px solid var(--rule); }
.faq__q {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 2rem 0.95rem 0;
  font-weight: 600;
  position: relative;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after {
  content: "+";
  position: absolute; right: 0.25rem; top: 0.8rem;
  font-family: var(--display); font-weight: 600; color: var(--gold); font-size: 1.2rem;
}
.faq__item[open] .faq__q::after { content: "–"; }
.faq__a { padding: 0 0 1.1rem; color: var(--ink-soft); max-width: 44em; }

/* Closing ------------------------------------------------------------ */
.closing { padding: 4rem 0; background: var(--ink); color: var(--paper); }
.closing__inner { display: flex; flex-direction: column; align-items: flex-start; }
.closing__title {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(1.9rem, 1.3rem + 2.4vw, 3rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  max-width: 16em;
  text-wrap: balance;
}
.closing__sub { margin-top: 0.9rem; color: #bcb7ab; max-width: 34em; }
.closing .fine { color: #9c978c; }
.closing .fine .link-quiet { color: #d8d3c7; }
.closing .btn:focus-visible { outline-color: var(--paper); }
.author__links { margin-top: 0.75rem; font-size: 0.95rem; }

/* Footer ------------------------------------------------------------- */
.footer { padding: 1.5rem 0 2rem; font-size: 0.8125rem; color: var(--ink-mute); }
.footer__sep { margin: 0 0.35rem; }

/* ------------------------------------------------------------------
   Larger screens
   ------------------------------------------------------------------ */
@media (min-width: 40em) {
  .cta { flex-direction: row; flex-wrap: wrap; }
  .cta .btn { width: auto; }
  .argument__list { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
  .endorsements__list { grid-template-columns: repeat(3, 1fr); }
  .author__grid { grid-template-columns: auto 1fr; gap: 2rem; }
  .author__photo { width: 10rem; height: 10rem; }
}

@media (min-width: 56em) {
  :root { --gutter: 2rem; }
  .hero { padding: 4.5rem 0 5.5rem; }
  .hero__grid { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 3.5rem; }
  .hero__cover { justify-content: flex-end; margin-top: 0; }
  .cover-img { width: min(100%, 18.5rem); }
  .argument, .contents, .author, .faq { padding-block: 5rem; }
  .contents__grid { grid-template-columns: 1.1fr 1fr; align-items: start; }
  .faq__grid { grid-template-columns: 1fr 2fr; align-items: start; }
  .closing { padding: 5.5rem 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}
