/* ============================================================================
   One-Person Company — "Field Guide" editorial design system
   Loads after tailwind.css so identity styles win the cascade.
   Type:  Fraunces (display) · Newsreader (reading) · JetBrains Mono (data/labels)
   ========================================================================== */

:root {
  --paper:    #FBFAF7;
  --paper-2:  #F2EEE5;
  --paper-3:  #ECE6DA;
  --ink:      #16140F;
  --ink-2:    #1B1812;
  --muted:    #6F685C;
  --faint:    #9A9282;
  --rule:     #E5DFD2;
  --rule-2:   #D8D0BF;
  --accent:   #B4452B;
  --accent-2: #9A3A23;
  --accent-soft: rgba(180, 69, 43, 0.09);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-serif:   "Newsreader", Georgia, "Times New Roman", serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --measure: 68ch;
  --page:    78rem;
  --gutter:  clamp(1.25rem, 5vw, 4rem);

  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

/* ----- Reset / base ------------------------------------------------------- */
* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1.0625rem, 0.6vw + 0.95rem, 1.1875rem);
  line-height: 1.62;
  font-weight: 380;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 460;
  line-height: 1.06;
  letter-spacing: -0.015em;
  font-optical-sizing: auto;
  text-wrap: balance;
}

p { margin: 0 0 1.1em; }

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

strong { font-weight: 600; }

hr {
  border: 0;
  height: 1px;
  background: var(--rule);
  margin: 2.5rem 0;
}

::selection { background: var(--accent); color: var(--paper); }

/* Paper grain overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ----- Shared editorial primitives --------------------------------------- */
.kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.25rem;
}
.kicker__sep { color: var(--rule-2); margin: 0 0.2em; }

.lede {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 1.4vw + 1rem, 1.7rem);
  line-height: 1.42;
  font-weight: 380;
  color: #34302a;
  max-width: 34ch;
  letter-spacing: -0.005em;
}

.eyebrow-rule {
  width: 2.5rem; height: 2px; background: var(--accent); border: 0; margin: 0 0 1.5rem;
}

/* ----- Header ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-header__inner {
  max-width: var(--page);
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}
.wordmark__mark { color: var(--accent); font-size: 0.95em; transform: translateY(0.04em); }
.wordmark__thin { color: var(--muted); font-weight: 400; }

.site-nav { margin-left: auto; display: flex; align-items: center; gap: 1.75rem; }
.site-nav__link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.25rem 0;
  position: relative;
  transition: color 0.2s var(--ease);
}
.site-nav__idx { color: var(--faint); font-size: 0.66rem; }
.site-nav__link:hover { color: var(--ink); }
.site-nav__link.is-current { color: var(--accent); }
.site-nav__link.is-current .site-nav__idx { color: var(--accent); }

.site-header__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--faint);
  border: 1px solid var(--rule-2);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}

.nav-toggle { display: none; }

/* ----- Main / generic wrappers ------------------------------------------- */
main { position: relative; z-index: 2; }

.wrap { max-width: var(--page); margin: 0 auto; padding-inline: var(--gutter); }

/* ----- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--ink);
  border-radius: 2px;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}
.btn--solid { background: var(--ink); color: var(--paper); }
.btn--solid:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.btn--ghost { color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.btn__arrow { transition: transform 0.2s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ----- Home: hero --------------------------------------------------------- */
.hero {
  max-width: var(--page);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vw, 7rem) var(--gutter) clamp(2.5rem, 6vw, 4.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}
.hero__title {
  font-size: clamp(2.9rem, 8.5vw, 6.8rem);
  font-weight: 430;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
}
.hero__title em {
  font-style: italic;
  font-weight: 380;
  color: var(--accent);
}
.hero__lede { margin-bottom: 2rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.hero__aside {
  border-left: 1px solid var(--rule-2);
  padding-left: clamp(1.25rem, 2vw, 2rem);
  padding-bottom: 0.5rem;
}
.stat { margin-bottom: 1.75rem; }
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 4.75rem);
  font-weight: 440;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--accent);
  font-variant-numeric: lining-nums;
}
.stat__num sub { font-size: 0.4em; color: var(--muted); letter-spacing: 0; }
.stat__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin-top: 0.6rem;
  max-width: 28ch;
}
.stat__label b { color: var(--ink); font-weight: 500; }

/* ----- Section bands on home --------------------------------------------- */
.band { max-width: var(--page); margin: 0 auto; padding: clamp(3rem, 7vw, 5.5rem) var(--gutter); }
.band--rule { border-top: 1px solid var(--rule); }
.band__head { margin-bottom: 2.5rem; max-width: 52ch; }
.band__head h2 { font-size: clamp(1.9rem, 3.5vw, 2.9rem); margin: 0 0 0.75rem; }
.band__head p { color: var(--muted); font-size: 1.1rem; max-width: 46ch; }

/* Part cards */
.parts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); gap: 1.25rem; }
.part-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, #fff 0%, var(--paper) 100%);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
  overflow: hidden;
}
.part-card::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--accent);
  transform: scaleY(0); transform-origin: top;
  transition: transform 0.3s var(--ease);
}
.part-card:hover { border-color: var(--rule-2); transform: translateY(-3px); box-shadow: 0 24px 50px -32px rgba(22,20,15,0.4); }
.part-card:hover::before { transform: scaleY(1); }
.part-card__idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.part-card__title { font-size: clamp(1.5rem, 2.5vw, 2.1rem); margin: 0 0 0.65rem; }
.part-card__dek { color: var(--muted); font-size: 1.02rem; margin-bottom: 1.5rem; }
.part-card__list { list-style: none; margin: 0 0 1.75rem; padding: 0; display: grid; gap: 0.55rem; }
.part-card__list li {
  font-size: 0.95rem; color: #3a352e; padding-left: 1.25rem; position: relative; line-height: 1.45;
}
.part-card__list li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.part-card__go {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  display: inline-flex; align-items: center; gap: 0.45rem;
}
.part-card__go .btn__arrow { transition: transform 0.2s var(--ease); }
.part-card:hover .part-card__go .btn__arrow { transform: translateX(4px); }

/* Headline figures strip */
.figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 1.75rem 2.5rem;
  border-top: 1px solid var(--rule);
  padding-top: 2.25rem;
}
.figure { display: flex; flex-direction: column; }
.figure__num {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 3.9rem);
  font-weight: 440;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--accent);
  font-variant-numeric: lining-nums;
}
.figure__num sub { font-size: 0.4em; color: var(--muted); letter-spacing: 0; vertical-align: baseline; }
.figure__label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--muted);
  margin: 0.85rem 0 0;
  max-width: 26ch;
}
.figure__label b { color: var(--ink); font-weight: 500; }

/* Pull quote band */
.quote-band { background: var(--ink); color: var(--paper); }
.quote-band .wrap { padding-block: clamp(3.5rem, 8vw, 6rem); }
.quote-band blockquote { margin: 0; max-width: 24ch; }
.quote-band .q {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 380;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.quote-band .q b { color: #E9A48E; font-weight: 380; font-style: italic; }
.quote-band cite {
  display: block; margin-top: 1.75rem;
  font-family: var(--font-mono); font-style: normal;
  font-size: 0.78rem; letter-spacing: 0.06em; color: #b9b0a2;
}

/* ----- Layer-maturity chart (signature viz) ------------------------------ */
.layers { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.layer {
  display: grid;
  grid-template-columns: 2.5rem minmax(8rem, 14rem) 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--rule);
}
.layer__idx { font-family: var(--font-mono); font-size: 0.78rem; color: var(--faint); }
.layer__name { font-family: var(--font-display); font-size: 1.12rem; font-weight: 480; }
.layer__name small { display: block; font-family: var(--font-mono); font-size: 0.68rem; color: var(--muted); letter-spacing: 0.02em; font-weight: 400; margin-top: 0.15rem; }
.layer__track { height: 9px; background: var(--paper-2); border: 1px solid var(--rule); position: relative; overflow: hidden; }
.layer__fill { position: absolute; inset: 0 auto 0 0; background: var(--accent); width: var(--w, 50%); transform-origin: left; }
.layer__lvl { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); min-width: 6.5rem; text-align: right; }

/* ----- Reading column (markdown content) --------------------------------- */
.reading {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 2.5rem) var(--gutter) 0;
  font-size: 1.15rem;
}
.reading > * { margin-inline: auto; }

.reading h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin: 3rem 0 1rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--rule);
}
.reading h2:first-child { border-top: 0; padding-top: 0; margin-top: 0; }
.reading h3 { font-size: 1.4rem; margin: 2.25rem 0 0.75rem; font-weight: 500; }
.reading h4 {
  font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent);
  margin: 2rem 0 0.75rem;
}
.reading p { margin: 0 0 1.25em; }
.reading a {
  color: var(--ink);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 1.15em;
  transition: background-size 0.25s var(--ease), color 0.2s var(--ease);
  padding-bottom: 1px;
}
.reading a:hover { color: var(--accent); background-size: 100% 2px; }

.reading ul, .reading ol { margin: 0 0 1.5em; padding-left: 1.5rem; }
.reading li { margin-bottom: 0.5em; padding-left: 0.35rem; }
.reading ul li::marker { color: var(--accent); }
.reading ol li::marker { color: var(--accent); font-family: var(--font-mono); font-size: 0.85em; }

.reading blockquote {
  margin: 2rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: 2px solid var(--accent);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.4rem;
  line-height: 1.3;
  color: #2c2822;
}
.reading blockquote p:last-child { margin-bottom: 0; }

.reading code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.1em 0.35em;
}
.reading pre {
  background: var(--ink);
  color: #ece6da;
  padding: 1.1rem 1.25rem;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 1.75rem 0;
}
.reading pre code { background: none; border: 0; padding: 0; color: inherit; }

.reading hr { margin: 3rem auto; width: 4rem; height: 2px; background: var(--rule-2); }

/* First paragraph after a hero lede gets a drop cap */
.reading > p.has-dropcap::first-letter,
.reading > h2:first-child + p::first-letter {
  font-family: var(--font-display);
  font-size: 3.4em;
  font-weight: 500;
  float: left;
  line-height: 0.82;
  padding: 0.05em 0.12em 0 0;
  color: var(--accent);
}

/* Tables — refined editorial style */
.reading table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
  font-family: var(--font-serif);
}
.reading thead th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  font-weight: 600;
  padding: 0 0.9rem 0.65rem;
  border-bottom: 2px solid var(--ink);
  vertical-align: bottom;
}
.reading tbody td {
  padding: 0.8rem 0.9rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.45;
}
.reading tbody tr:hover { background: var(--accent-soft); }
.reading tbody td:first-child { font-weight: 500; color: var(--ink); }

/* Markdown callouts: blockquotes starting with a bold label become asides
   when authored as the .callout component directly in HTML. */

/* ----- Callouts ----------------------------------------------------------- */
.callout {
  margin: 2rem auto;
  max-width: var(--measure);
  padding: 1.25rem 1.4rem;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
}
.callout__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.callout p { margin: 0; font-size: 1rem; line-height: 1.55; }
.callout--legal { background: var(--accent-soft); border-color: rgba(180,69,43,0.25); }

/* ----- Section layout ----------------------------------------------------- */
.section__hero {
  max-width: var(--page);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) var(--gutter) clamp(1.5rem, 4vw, 3rem);
}
.section__title { font-size: clamp(2.4rem, 6.5vw, 5rem); margin: 0 0 1.5rem; letter-spacing: -0.03em; }
.section__meta {
  margin-top: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--faint);
  display: flex; gap: 0.6rem; align-items: center;
}
.section__meta span[aria-hidden] { color: var(--rule-2); }

/* Page (about) */
.page__head { max-width: var(--page); margin: 0 auto; padding: clamp(3rem, 8vw, 6rem) var(--gutter) 1rem; }
.page__title { font-size: clamp(2.4rem, 6vw, 4.5rem); margin: 0 0 1.25rem; }

/* Section pager */
.section-pager {
  max-width: var(--page);
  margin: clamp(3rem, 7vw, 5rem) auto 0;
  padding: 2rem var(--gutter) 0;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.section-pager__link { display: grid; gap: 0.4rem; max-width: 20rem; }
.section-pager__link--next { text-align: right; }
.section-pager__dir { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--accent); }
.section-pager__title { font-family: var(--font-display); font-size: 1.3rem; transition: color 0.2s var(--ease); }
.section-pager__link:hover .section-pager__title { color: var(--accent); }

/* ----- Footer ------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--rule); margin-top: clamp(4rem, 9vw, 7rem); background: var(--paper-2); position: relative; z-index: 2; }
.site-footer__inner {
  max-width: var(--page); margin: 0 auto; padding: clamp(2.5rem, 5vw, 4rem) var(--gutter);
  display: grid; gap: 1.5rem;
  grid-template-columns: minmax(0, 1.5fr) auto;
  align-items: start;
}
.site-footer__brand { display: flex; gap: 0.75rem; max-width: 42ch; }
.site-footer__brand p { font-size: 0.95rem; color: var(--muted); margin: 0; }
.site-footer__nav { display: flex; gap: 1.25rem; font-family: var(--font-mono); font-size: 0.78rem; }
.site-footer__nav a { color: var(--muted); }
.site-footer__nav a:hover { color: var(--accent); }
.site-footer__legal {
  grid-column: 1 / -1; padding-top: 1.5rem; border-top: 1px solid var(--rule);
  font-size: 0.92rem; color: var(--muted); margin: 0;
}
.site-footer__legal strong { color: var(--accent); }
.site-footer__meta {
  grid-column: 1 / -1; display: flex; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--faint); margin: 0;
}

/* ----- Reveal-on-scroll --------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }
@media print { .reveal { opacity: 1 !important; transform: none !important; } .grain, .site-header, .site-footer { display: none; } }

/* Staggered hero load */
.hero .kicker, .hero__title, .hero__lede, .hero__cta { animation: rise 0.8s var(--ease) both; }
.hero__title { animation-delay: 0.06s; }
.hero__lede { animation-delay: 0.14s; }
.hero__cta { animation-delay: 0.22s; }
.hero__aside { animation: rise 0.9s var(--ease) 0.3s both; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ----- Responsive --------------------------------------------------------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero__aside { border-left: 0; border-top: 1px solid var(--rule-2); padding-left: 0; padding-top: 1.75rem; }
  .site-footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .site-nav, .site-header__tag { display: none; }
  .site-header.is-open .site-nav {
    display: flex; flex-direction: column; gap: 1rem;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--rule);
    padding: 1.25rem var(--gutter);
    margin: 0;
  }
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 5px;
    margin-left: auto; background: none; border: 0; cursor: pointer; padding: 0.5rem;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--ink); transition: transform 0.2s var(--ease), opacity 0.2s; }
  .site-header.is-open .nav-toggle span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .site-header.is-open .nav-toggle span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .layer { grid-template-columns: 1.75rem 1fr; row-gap: 0.5rem; }
  .layer__track { grid-column: 1 / -1; }
  .layer__lvl { grid-column: 2; text-align: left; }
  .section-pager { flex-direction: column; }
  .section-pager__link--next { text-align: left; }
}