/* figuwo.com. Colors and type from the books (design-assets/print-test/test_kit.py;
   city colors from figuwo-pipeline/design/directions/almanac.yaml). */
:root {
  --space: #000; --navy: #173344; --cream: #F4EFE2; --ink: #1B1F24; --parchment: #F3E9D6;
  --amber: #F2B33D; --dark-red: #8A2A1A; --shelf: #6B4E33;
  --display: "Barlow Semi Condensed", "Arial Narrow", sans-serif;
  --text: "Source Serif 4", Georgia, serif;
}
* { box-sizing: border-box; }
html { background: var(--space); }
body { margin: 0; color: var(--parchment); font: 400 1.1875rem/1.55 var(--text); }
a { color: inherit; text-underline-offset: 0.18em; }
a:focus-visible, input:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; }
.wrap { max-width: 76rem; margin: 0 auto; padding-left: clamp(1.25rem, 5vw, 3rem); padding-right: clamp(1.25rem, 5vw, 3rem); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* The name, with the letters it comes from */
.lockup { display: inline-flex; flex-direction: column; text-decoration: none; color: #fff; }
.lockup .name { font: 800 1.75rem/1 var(--display); letter-spacing: 0.06em; }
.lockup .line { font: 500 0.875rem/1.3 var(--display); letter-spacing: 0.16em; text-transform: uppercase; margin-top: 0.45rem; color: var(--parchment); }
.lockup .line b { font-weight: 800; color: var(--amber); }

/* The series title, set like the covers */
.series { margin: 0; font-family: var(--display); font-weight: 800; color: #fff; line-height: 0.9; }
.series-cities { display: block; text-transform: uppercase; font-size: clamp(3.5rem, 12vw, 9.5rem); letter-spacing: -0.005em; }
.series-for { display: block; color: var(--amber); font-size: clamp(1.75rem, 6vw, 4.75rem); margin-top: 0.08em; }

/* Homepage: the Earth with every city ringed */
.hero { position: relative; overflow: hidden; background: var(--space); }
.hero-earth { display: block; width: 100%; height: auto; aspect-ratio: 8 / 5; margin-top: clamp(-6rem, -6vw, -2rem); }
.hero-earth .rings circle { fill: rgba(242, 179, 61, 0.15); stroke: var(--amber); stroke-width: 2.6; transition: r 0.15s; }
.hero-earth .rings a:hover circle { fill: var(--amber); r: 11; }
.hero-text { position: relative; z-index: 1; padding-top: clamp(1.75rem, 4vw, 3rem); }
.hero-text .series { margin-top: clamp(2.5rem, 7vw, 5rem); }
.hero-text p { max-width: 38rem; margin: 1.1rem 0 0; font-size: clamp(1.125rem, 1.8vw, 1.3125rem); }
.hero-text p:first-of-type { margin-top: clamp(1.5rem, 3vw, 2.25rem); }

/* The shelf of every city */
.shelf-section { background: var(--cream); color: var(--ink); padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 5rem); }
.kicker { font: 800 0.875rem/1.2 var(--display); letter-spacing: 0.18em; text-transform: uppercase; color: var(--dark-red); margin: 0 0 0.75rem; }
.shelf-section h2 { font: 800 clamp(2.5rem, 6vw, 4.5rem)/0.95 var(--display); margin: 0 0 1.25rem; color: var(--ink); }
.lede { max-width: 38rem; margin: 0 0 1.75rem; }
.find { display: flex; flex-direction: column; gap: 0.4rem; max-width: 26rem; font: 700 0.9375rem/1.2 var(--display); letter-spacing: 0.04em; }
.find input { font: 400 1.1875rem/1.3 var(--text); padding: 0.7rem 0.9rem; border: 2px solid var(--ink); border-radius: 0; background: #fff; color: var(--ink); }
.find-none { margin: 1rem 0 0; }
.shelf {
  --h: 15rem; --gap: 0.9rem;
  list-style: none; margin: 2.25rem auto 0; padding: 0 clamp(1.25rem, 5vw, 3rem); max-width: 76rem;
  display: flex; flex-wrap: wrap; row-gap: var(--gap); column-gap: 3px;
  background: repeating-linear-gradient(to bottom, transparent 0 var(--h), var(--shelf) var(--h) calc(var(--h) + var(--gap)));
}
.shelf li { display: block; }
.shelf li[hidden] { display: none; }
.spine {
  display: flex; flex-direction: column; justify-content: space-between; align-items: center;
  width: 2.5rem; height: var(--h); padding: 0.7rem 0 0.6rem;
  background: var(--bg); color: var(--fg); text-decoration: none;
  transition: transform 0.12s;
}
.spine:hover, .spine:focus-visible { transform: translateY(-0.6rem); }
.spine-name { writing-mode: vertical-rl; font: 800 0.9375rem/1 var(--display); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; overflow: hidden; max-height: calc(var(--h) - 3rem); }
.spine-st { font: 700 0.75rem/1 var(--display); letter-spacing: 0.08em; }

/* City pages */
.city-hero { position: relative; background: var(--space); overflow: hidden; }
.city-earth { position: relative; }
.city-earth { margin-top: clamp(-4rem, -4vw, -1.5rem); }
.city-earth img { display: block; width: 100%; height: auto; }
.ring { position: absolute; width: 1.75rem; height: 1.75rem; margin: -0.875rem 0 0 -0.875rem; border: 3px solid var(--amber); border-radius: 50%; }
.city-text { position: relative; z-index: 1; padding-top: clamp(1.75rem, 4vw, 3rem); }
.city-text .series { margin-top: clamp(1.75rem, 5vw, 3.5rem); }
.city-text .series-cities { font-size: clamp(3rem, 10vw, 8rem); }
.where { margin: 0.9rem 0 0; font: 700 1rem/1.3 var(--display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--parchment); }
.tab { position: absolute; top: 0; right: 0; width: clamp(0.75rem, 2vw, 1.5rem); height: 9rem; background: var(--bg); }
.city-main { padding-top: clamp(2.5rem, 6vw, 4rem); padding-bottom: clamp(3rem, 6vw, 5rem); background: var(--navy); }
.city .city-main { max-width: none; }
.city-lede { max-width: 70rem; margin: 0 auto 2.5rem; font-size: clamp(1.25rem, 2.2vw, 1.5rem); color: #fff; }
.facts { display: flex; flex-wrap: wrap; gap: 1.5rem 3.5rem; margin: 0 auto 3rem; max-width: 70rem; }
.facts dt { font: 800 0.8125rem/1.2 var(--display); letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); }
.facts dd { margin: 0.35rem 0 0; font: 800 clamp(2rem, 5vw, 3.25rem)/1 var(--display); color: #fff; }
.walk { display: grid; grid-template-columns: 1fr auto 1fr; gap: 1rem; align-items: end; max-width: 70rem; margin: 0 auto; font: 700 1.125rem/1.25 var(--display); }
.walk a { text-decoration: none; color: #fff; }
.walk a span { display: block; font-size: 0.8125rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); margin-bottom: 0.3rem; }
.walk-all { text-align: center; text-decoration: underline !important; }
.walk-next { text-align: right; }

/* Footer */
.foot { background: var(--cream); color: var(--ink); padding: 2.5rem 0 2.75rem; border-top: 6px solid var(--amber); }
.foot .lockup { color: var(--ink); margin-bottom: 1.25rem; }
.foot .lockup .line { color: var(--ink); }
.foot .lockup .line b { color: var(--dark-red); }
.foot p { margin: 0 0 0.6em; max-width: 46rem; }
.foot .ask { font-size: 1.125rem; }
.foot .small { font-size: 0.8125rem; color: #4A4640; }

@media (max-width: 640px) {
  .hero-earth { margin-top: 0.5rem; }
  .shelf { --h: 12rem; }
  .spine { width: 2.1rem; }
  .spine-name { font-size: 0.8125rem; }
  .walk { grid-template-columns: 1fr 1fr; }
  .walk-all { grid-column: 1 / -1; grid-row: 2; }
}
@media (prefers-reduced-motion: reduce) {
  .spine, .hero-earth .rings circle { transition: none; }
}

/* Sources: a small (i) beside a picture or number */
.info { position: relative; display: inline-block; vertical-align: middle; }
.info-btn { width: 1.15rem; height: 1.15rem; padding: 0; border: 1.5px solid currentColor; border-radius: 50%; background: none; color: inherit; opacity: 0.55; font: italic 700 0.75rem/1 var(--text); cursor: pointer; }
.info-btn:hover, .info-btn:focus-visible, .info.open .info-btn { opacity: 1; }
.info-pop { display: none; position: absolute; z-index: 5; bottom: calc(100% + 0.45rem); left: 50%; transform: translateX(-50%); width: max-content; max-width: min(18rem, 80vw); padding: 0.55rem 0.7rem; background: var(--cream); color: var(--ink); font: 400 0.8125rem/1.4 var(--text); letter-spacing: 0; text-transform: none; box-shadow: 0 2px 10px rgba(0,0,0,.35); }
.info:hover .info-pop, .info-btn:focus-visible + .info-pop, .info.open .info-pop { display: block; }
.info-corner { position: absolute; right: clamp(0.75rem, 2vw, 1.5rem); bottom: clamp(0.75rem, 2vw, 1.25rem); color: #fff; }
.info-corner .info-pop { left: auto; right: 0; transform: none; }
.hero { position: relative; }