/* =========================================================================
   What Is an Hour Worth  ·  site stylesheet
   No framework, no build step. All palette and type tokens live in :root.
   ========================================================================= */

/* ---------- 1. Tokens ---------------------------------------------------- */

:root {
  color-scheme: light;

  --paper:      #FBF9F4;
  --paper-2:    #F4F0E7;
  --paper-3:    #EDE7DA;
  --ink:        #17181B;
  --ink-2:      #4E535C;
  --ink-3:      #79808A;
  --rule:       #E3DDD0;
  --rule-soft:  #EFEADF;
  --accent:     #9C3D1C;
  --accent-ink: #7E2F13;
  --accent-bg:  #F4E6DD;

  --font-serif: "Source Serif 4", Charter, "Iowan Old Style", Georgia, serif;
  --font-sans:  Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --measure: 34rem;
  --wide:    72rem;
  --gap:     clamp(1.25rem, 4vw, 2.5rem);

  --step--1: clamp(0.82rem, 0.79rem + 0.14vw, 0.9rem);
  --step-0:  clamp(1.06rem, 1.01rem + 0.24vw, 1.2rem);
  --step-1:  clamp(1.25rem, 1.16rem + 0.44vw, 1.5rem);
  --step-2:  clamp(1.55rem, 1.36rem + 0.9vw, 2.1rem);
  --step-3:  clamp(2rem,    1.6rem  + 1.9vw, 3.1rem);
  --step-4:  clamp(2.6rem,  1.85rem + 3.6vw, 5rem);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper:      #101113;
  --paper-2:    #17191C;
  --paper-3:    #1D2024;
  --ink:        #ECE8E0;
  --ink-2:      #ABB0B8;
  --ink-3:      #7D838C;
  --rule:       #272B31;
  --rule-soft:  #1E2126;
  --accent:     #E08A63;
  --accent-ink: #EFA783;
  --accent-bg:  #24201D;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper:      #101113;
    --paper-2:    #17191C;
    --paper-3:    #1D2024;
    --ink:        #ECE8E0;
    --ink-2:      #ABB0B8;
    --ink-3:      #7D838C;
    --rule:       #272B31;
    --rule-soft:  #1E2126;
    --accent:     #E08A63;
    --accent-ink: #EFA783;
    --accent-bg:  #24201D;
  }
}

/* ---------- 2. Reset and base ------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--step-0);
  line-height: 1.62;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--accent-ink); }

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

hr { border: 0; border-top: 1px solid var(--rule); margin: 3rem 0; }

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

.skip {
  position: absolute; left: -9999px;
  background: var(--ink); color: var(--paper);
  padding: .7rem 1.1rem; z-index: 100; font-family: var(--font-sans); font-size: .9rem;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- 3. Layout ---------------------------------------------------- */

.wrap  { width: min(100% - 2 * var(--gap), var(--wide)); margin-inline: auto; }
.prose { width: min(100% - 2 * var(--gap), var(--measure)); margin-inline: auto; }

section { margin-block: clamp(3.5rem, 8vw, 6.5rem); }
section:first-of-type { margin-top: clamp(2.5rem, 6vw, 4rem); }

/* ---------- 4. Masthead -------------------------------------------------- */

.masthead {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rule-soft);
}
@supports not (backdrop-filter: blur(1px)) { .masthead { background: var(--paper); } }

.masthead__inner {
  display: flex; align-items: center; gap: 1rem;
  min-height: 4rem;
  width: min(100% - 2 * var(--gap), var(--wide)); margin-inline: auto;
}

.wordmark {
  font-family: var(--font-sans);
  font-weight: 620; font-size: .82rem; letter-spacing: .13em; text-transform: uppercase;
  color: var(--ink); text-decoration: none; line-height: 1.25;
  display: flex; align-items: center; gap: .6rem; margin-right: auto;
}
.wordmark:hover { color: var(--accent); }
.wordmark svg { flex: none; color: var(--accent); }

.nav { display: flex; align-items: center; gap: clamp(.85rem, 2vw, 1.6rem); }
.nav a {
  font-family: var(--font-sans); font-size: .84rem; font-weight: 480;
  color: var(--ink-2); text-decoration: none; white-space: nowrap;
  padding-block: .3rem; border-bottom: 1.5px solid transparent;
}
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

.theme-toggle {
  appearance: none; background: none; border: 1px solid var(--rule);
  color: var(--ink-2); border-radius: 999px; width: 2rem; height: 2rem;
  display: grid; place-items: center; cursor: pointer; flex: none; padding: 0;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }

@media (max-width: 44rem) {
  .masthead__inner { flex-wrap: wrap; padding-block: .7rem; min-height: 0; }
  .wordmark { font-size: .74rem; }
  .nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: .2rem; gap: 1.05rem; }
  .nav::-webkit-scrollbar { display: none; }
}

/* ---------- 5. Type ------------------------------------------------------ */

h1, h2, h3, h4 { font-weight: 600; line-height: 1.14; letter-spacing: -0.015em; margin: 0 0 .6em; text-wrap: balance; }
h1 { font-size: var(--step-3); }
h2 { font-size: var(--step-2); margin-top: 2.4em; }
h3 { font-size: var(--step-1); margin-top: 2em; letter-spacing: -0.008em; }
h4 { font-size: var(--step-0); margin-top: 1.8em; font-weight: 650; }
h2:first-child, h3:first-child { margin-top: 0; }

p { margin: 0 0 1.25em; text-wrap: pretty; }

.eyebrow {
  font-family: var(--font-sans); font-size: .74rem; font-weight: 600;
  letter-spacing: .15em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 1.1rem; display: block;
}
.eyebrow--mute { color: var(--ink-3); }

.lede { font-size: var(--step-1); line-height: 1.46; color: var(--ink-2); }

.meta { font-family: var(--font-sans); font-size: var(--step--1); color: var(--ink-3); letter-spacing: .01em; }

blockquote {
  margin: 2.2rem 0; padding-left: 1.4rem;
  border-left: 2px solid var(--accent);
  font-size: var(--step-1); line-height: 1.45; color: var(--ink);
}
blockquote p:last-child { margin-bottom: 0; }
blockquote cite { display: block; margin-top: .8rem; font-size: var(--step--1); font-style: normal; font-family: var(--font-sans); color: var(--ink-3); }

.prose ul, .prose ol { margin: 0 0 1.4em; padding-left: 1.3em; }
.prose li { margin-bottom: .5em; }
.prose li::marker { color: var(--ink-3); }

strong { font-weight: 650; }

/* ---------- 6. Hero ------------------------------------------------------ */

.hero { padding-block: clamp(3.5rem, 11vw, 8rem) clamp(2.5rem, 7vw, 5rem); }
.hero h1 {
  font-size: var(--step-4);
  font-weight: 550;
  letter-spacing: -0.028em;
  line-height: 1.02;
  max-width: 16ch;
  margin-bottom: .5em;
}
.hero .lede { max-width: 44ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2.2rem; }

.rule-ticks {
  height: 14px; margin: clamp(2.5rem, 6vw, 4rem) 0 0;
  border-top: 1px solid var(--rule);
  background-image: repeating-linear-gradient(to right, var(--rule) 0 1px, transparent 1px 100%);
  background-size: 2.5rem 100%;
  background-repeat: repeat-x;
  opacity: .85;
}

/* ---------- 7. Buttons --------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-sans); font-size: .88rem; font-weight: 520;
  padding: .68rem 1.15rem; border-radius: 3px; text-decoration: none;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: #FFFFFF; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn--ghost:hover { background: transparent; color: var(--accent); border-color: var(--accent); }

/* ---------- 8. Cards and grids ------------------------------------------ */

.grid { display: grid; gap: 1.5rem; }
@media (min-width: 52rem) { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: clamp(1.4rem, 3vw, 2rem);
  display: flex; flex-direction: column;
}
.card h3 { margin-top: 0; font-size: var(--step-1); }
.card p { color: var(--ink-2); font-size: .97em; }
.card__foot { margin-top: auto; padding-top: 1.1rem; display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

.numeral {
  font-family: var(--font-sans); font-size: .72rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
  display: block; margin-bottom: .8rem;
}

/* ---------- 9. Terms ----------------------------------------------------- */

.terms { margin: 2.5rem 0 0; }
.term { padding: 1.5rem 0; border-top: 1px solid var(--rule); scroll-margin-top: 6rem; }
.term:last-of-type { border-bottom: 1px solid var(--rule); }
.term dt {
  font-weight: 650; font-size: var(--step-1); letter-spacing: -0.01em;
  margin-bottom: .45rem; display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap;
}
.term dd { margin: 0; color: var(--ink-2); }
.term dd p:last-child { margin-bottom: 0; }
.term dd + dd { margin-top: .7rem; }

.tag {
  font-family: var(--font-sans); font-size: .66rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase;
  padding: .2rem .5rem; border-radius: 2px;
  background: var(--paper-3); color: var(--ink-3); border: 1px solid var(--rule);
  white-space: nowrap;
}
.tag--warn { background: var(--accent-bg); color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }

.anchor { font-family: var(--font-sans); font-size: .8rem; color: var(--ink-3); text-decoration: none; opacity: 0; transition: opacity .15s; }
.term:hover .anchor, .anchor:focus { opacity: 1; }

.filter { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; margin-top: 2rem; }
.filter input {
  font-family: var(--font-sans); font-size: .92rem;
  padding: .6rem .9rem; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--paper-2); color: var(--ink); flex: 1 1 16rem; min-width: 0;
}
.filter input::placeholder { color: var(--ink-3); }
.filter__count { font-family: var(--font-sans); font-size: .82rem; color: var(--ink-3); }
.term[hidden] { display: none; }

.empty { font-family: var(--font-sans); font-size: .92rem; color: var(--ink-3); padding: 2.5rem 0; border-top: 1px solid var(--rule); }

/* ---------- 10. Tables --------------------------------------------------- */

.table-scroll { overflow-x: auto; margin: 2rem 0; border: 1px solid var(--rule); border-radius: 4px; }
table { border-collapse: collapse; width: 100%; font-size: .94rem; }
th, td { text-align: left; padding: .8rem 1rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
thead th {
  font-family: var(--font-sans); font-size: .74rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3);
  background: var(--paper-2); white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }

/* ---------- 11. Post list ------------------------------------------------ */

.posts { list-style: none; margin: 2.5rem 0 0; padding: 0; }
.posts li { border-top: 1px solid var(--rule); }
.posts li:last-child { border-bottom: 1px solid var(--rule); }
.post-link { display: block; padding: 1.7rem 0; text-decoration: none; color: inherit; }
.post-link:hover h3 { color: var(--accent); }
.post-link h3 { margin: .35rem 0 .5rem; font-size: var(--step-1); transition: color .15s; }
.post-link p { color: var(--ink-2); margin: 0; font-size: .97em; }

/* ---------- 12. Article -------------------------------------------------- */

.article-head { padding-block: clamp(2.5rem, 7vw, 4.5rem) 0; }
.article-head h1 { max-width: 20ch; }
.article-body { padding-top: 2.5rem; }

.callout {
  background: var(--paper-2); border: 1px solid var(--rule);
  border-left: 2px solid var(--accent);
  border-radius: 0 4px 4px 0;
  padding: 1.25rem 1.4rem; margin: 2.2rem 0;
  font-size: .96em; color: var(--ink-2);
}
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--ink); }

/* ---------- 13. Video ---------------------------------------------------- */

.video {
  position: relative; aspect-ratio: 16 / 9;
  background: var(--paper-2); border: 1px solid var(--rule); border-radius: 4px;
  overflow: hidden; margin: 2.5rem 0;
}
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video__placeholder {
  position: absolute; inset: 0;
  display: grid; place-content: center; gap: .6rem; text-align: center; padding: 2rem;
  font-family: var(--font-sans); color: var(--ink-3); font-size: .92rem;
}
.video__placeholder strong { color: var(--ink-2); font-weight: 560; font-size: 1rem; }

/* ---------- 14. Pending link chips -------------------------------------- */

.pending {
  font-family: var(--font-sans); font-size: .74rem; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-3); background: var(--paper-3);
  border: 1px dashed var(--rule); border-radius: 2px;
  padding: .28rem .55rem; display: inline-block; white-space: nowrap;
}

/* ---------- 15. Footer --------------------------------------------------- */

.footer {
  border-top: 1px solid var(--rule);
  margin-top: clamp(4rem, 10vw, 8rem);
  padding-block: 3rem 3.5rem;
  font-family: var(--font-sans); font-size: .86rem; color: var(--ink-3);
}
.footer__grid { display: grid; gap: 2rem; }
@media (min-width: 46rem) { .footer__grid { grid-template-columns: 1.6fr 1fr 1fr; } }
.footer h4 {
  font-family: var(--font-sans); font-size: .72rem; font-weight: 600;
  letter-spacing: .13em; text-transform: uppercase; color: var(--ink-2);
  margin: 0 0 .9rem;
}
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: .5rem; }
.footer a { color: var(--ink-2); text-decoration: none; }
.footer a:hover { color: var(--accent); }
.footer__note { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule-soft); max-width: 62ch; line-height: 1.6; }

/* ---------- 16. Utilities ------------------------------------------------ */

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.center { text-align: center; }
.mt-0 { margin-top: 0; }

@media print {
  .masthead, .footer, .theme-toggle, .filter { display: none; }
  body { background: #FFFFFF; color: #000000; }
  a { color: #000000; }
}

/* ---------- Book ---------------------------------------------------------- */

.book-hero {
  display: grid; gap: var(--gap); align-items: center;
  padding-top: clamp(2rem, 6vw, 4.5rem); padding-bottom: clamp(1.5rem, 4vw, 3rem);
}
@media (min-width: 52rem) { .book-hero { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); } }
.book-hero h1 { margin: .35rem 0 .25rem; font-size: var(--step-4); line-height: 1.02; }
.book-subtitle {
  margin: 0 0 1.25rem; font-family: var(--font-sans); font-size: var(--step--1);
  font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--accent);
}
.book-cover { margin: 0; max-width: 22rem; justify-self: center; width: 100%; }
@media (max-width: 51.99rem) { .book-hero .book-cover { max-width: 14rem; } }
.book-cover img {
  display: block; width: 100%; height: auto; border-radius: 3px;
  box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 18px 40px -12px rgba(0,0,0,.35);
}
.book-cover--sm { max-width: 13rem; }

.toc { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.toc li {
  display: flex; gap: 1rem; align-items: baseline;
  padding: .55rem 0; border-bottom: 1px solid var(--rule-soft);
}
.toc__n {
  flex: none; width: 5.5rem; font-family: var(--font-sans); font-size: var(--step--1);
  color: var(--ink-3); font-variant-numeric: tabular-nums;
}
.toc .toc__part {
  display: block; border-bottom: 0; padding: 1.75rem 0 .35rem;
  font-family: var(--font-sans); font-size: var(--step--1); font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
}
.toc .toc__part:first-child { padding-top: 0; }

.excerpt { border-left: 2px solid var(--accent); padding-left: 1.25rem; }
.excerpt p { font-style: italic; color: var(--ink-2); }

.book-cta {
  margin-top: 2.5rem; padding: 1.5rem; border: 1px solid var(--rule);
  border-radius: 6px; background: var(--paper-2);
}
.book-cta p { margin-top: 0; }

.book-band { display: grid; gap: var(--gap); align-items: center; }
@media (min-width: 46rem) { .book-band { grid-template-columns: auto 1fr; } }

/* ---------- Series navigation (essay footers) ----------------------------- */

.series-nav {
  margin-top: 2.5rem; padding: 1.25rem 1.5rem; border: 1px solid var(--rule);
  border-radius: 6px; background: var(--paper-2);
}
.series-nav .eyebrow { margin: 0 0 .75rem; }
.series-nav ol { margin: 0; padding-left: 1.4rem; font-size: .95em; }
.series-nav li { margin: .35rem 0; }
.series-nav li[aria-current] span { font-weight: 600; color: var(--ink); }
.series-nav__next { color: var(--ink-3); list-style: none; margin-left: -1.4rem !important; font-style: italic; }

/* ---------- Podcasts ------------------------------------------------------ */

.podcast__host { color: var(--ink-3) !important; font-size: .9em !important; margin: -.2rem 0 .4rem !important; }
.topics { list-style: none; padding: 0; margin: 1.5rem 0 0; counter-reset: topic; }
.topics li { counter-increment: topic; padding: 1rem 0 1rem 2.6rem; border-top: 1px solid var(--rule-soft); position: relative; }
.topics li::before {
  content: counter(topic, decimal-leading-zero); position: absolute; left: 0; top: 1.1rem;
  font-family: var(--font-sans); font-size: var(--step--1); color: var(--accent); font-variant-numeric: tabular-nums;
}
.topics strong { display: block; margin-bottom: .2rem; }
.topics span { color: var(--ink-2); font-size: .97em; }

/* ---------- Writing index grouped by series ------------------------------- */

.posts__series { margin: 3.5rem 0 0; font-size: var(--step-2); }
.posts__series:first-child { margin-top: 1rem; }
.posts__series .meta { font-size: var(--step--1); font-weight: 400; margin-left: .4rem; }
.posts__series + .posts { margin-top: 1rem; }