/* Ukaia: editorial and information design.
   Six colors, all on hue 60 degrees, defined only here on :root. */
:root {
  --paper: #F4F4E1;
  --ink: #262610;
  --soft: #5A5A30;
  --ochre: #8A8A10;
  --gold: #E6E68A;
  --night: #2A2A12;
  --wrap: 1120px;
  --gutter: 16px;
  --measure: 42rem;
  color-scheme: light;
}

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

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1.5rem;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: ui-serif, Charter, Georgia, serif;
  font-size: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  line-height: 1.65;
  overflow-wrap: break-word;
}

/* Type */

h1,
h2,
h3 {
  font-family: ui-serif, Charter, Georgia, serif;
  line-height: 1.12;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.25rem, 1.3rem + 3.8vw, 4.75rem);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.02em;
}

h1 em {
  font-style: italic;
}

h2 {
  font-size: clamp(1.6rem, 1.2rem + 1.7vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem);
  font-weight: 700;
  line-height: 1.2;
}

p,
dd {
  margin: 0 0 1em;
  max-width: var(--measure);
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.3em;
  max-width: var(--measure);
}

li + li {
  margin-top: 0.4em;
}

dl {
  margin: 0;
}

dt {
  font-weight: 700;
}

dd {
  margin-left: 0;
}

.eyebrow {
  margin: 0 0 1.1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--soft);
}

.lede {
  font-size: clamp(1.125rem, 1rem + 0.6vw, 1.4rem);
  line-height: 1.5;
}

/* Links, focus, selection */

a {
  color: var(--ink);
  text-decoration-line: underline;
  text-decoration-color: var(--ochre);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
  transition: background-color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  background-color: var(--gold);
  text-decoration-color: var(--ink);
}

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

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

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -4rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  background-color: var(--ink);
  color: var(--paper);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--gutter);
}

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

/* Header and navigation */

.site-header {
  border-bottom: 1px solid var(--ink);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  padding-block: 1.1rem 0.9rem;
}

.brand-group {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.9rem;
}

.brand {
  font-size: clamp(1.45rem, 1.2rem + 0.8vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-note {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--soft);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: none;
}

.site-nav li + li {
  margin-top: 0;
}

.site-nav a[aria-current="page"] {
  font-weight: 700;
  text-decoration-color: var(--ink);
}

/* Hero */

.hero {
  padding-block: clamp(2.5rem, 1.5rem + 4vw, 5.5rem) clamp(3rem, 2rem + 3vw, 5rem);
  border-bottom: 1px solid var(--ink);
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: end;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.hero-figure {
  margin: 0;
  max-width: 28rem;
}

.hero-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.hero-figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--soft);
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.55rem 1.15rem;
  border: 2px solid var(--ink);
  background-color: var(--ink);
  color: var(--paper);
  font: inherit;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  border-radius: 0;
}

.button:hover {
  background-color: var(--gold);
  border-color: var(--ink);
  color: var(--ink);
}

.button--ghost {
  background-color: var(--paper);
  color: var(--ink);
}

.button--ghost:hover {
  background-color: var(--gold);
}

/* Sections and layout */

.section {
  padding-block: clamp(3rem, 2rem + 4vw, 6.5rem);
  border-bottom: 1px solid var(--ink);
}

.split {
  display: grid;
  gap: 1.5rem 3rem;
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem);
}

.principles {
  display: grid;
  gap: 1.75rem;
  margin-top: 2rem;
}

.principles > div {
  padding-top: 1rem;
  border-top: 1px solid var(--ink);
}

.principles dt {
  margin-bottom: 0.4rem;
  font-size: 1.2rem;
}

.prose h3 {
  margin-top: 1.6rem;
}

.prose h3:first-child {
  margin-top: 0;
}

ul.dashes {
  list-style: none;
  padding-left: 0;
}

ul.dashes li {
  position: relative;
  padding-left: 1.4em;
}

ul.dashes li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  top: 0;
}

ul.plain {
  list-style: none;
  padding-left: 0;
}

.terms {
  display: grid;
  gap: 1.1rem;
}

.terms > div {
  padding-top: 0.8rem;
  border-top: 1px solid var(--ink);
}

.big-link {
  font-size: clamp(1.4rem, 1rem + 2vw, 2.4rem);
  font-weight: 700;
  overflow-wrap: anywhere;
}

/* Scrollytelling: sticky figure with text steps */

.scrolly {
  display: grid;
  gap: 2rem;
}

.scene {
  margin: 0;
  padding: clamp(0.75rem, 0.5rem + 1vw, 1.5rem);
  border: 1px solid var(--ink);
  background-color: var(--paper);
}

.scene svg {
  display: block;
  width: 100%;
  height: auto;
}

.scene figcaption {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--soft);
}

.frame {
  opacity: 0;
  transition: opacity 0.6s ease;
}

.frame.is-active {
  opacity: 1;
}

.tone-a {
  fill: var(--ochre);
}

.tone-b {
  fill: var(--ink);
}

.tone-c {
  fill: var(--soft);
}

.axis {
  fill: var(--ink);
}

.marker-ring {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2.5;
}

.leader {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
}

.note {
  fill: var(--ink);
  font-size: 22px;
}

.scene-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.35rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
}

.scene-track li {
  margin: 0;
  padding: 0.4rem 0.2rem;
  border: 1px solid var(--ink);
  background-color: var(--paper);
  color: var(--ink);
}

.scene-track li + li {
  margin-top: 0;
}

.scene-track li.is-current {
  background-color: var(--ink);
  color: var(--paper);
}

.step {
  margin: 0 0 1.25rem;
  padding: 1.25rem 1.25rem 1.5rem;
  transition: background-color 0.4s ease;
}

.step.is-active {
  background-color: var(--gold);
}

.step p {
  max-width: none;
}

@media (min-width: 760px) {
  .principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 4rem;
  }

  .hero-figure {
    justify-self: end;
  }

  .split {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
    gap: 4rem;
  }

  .scrolly {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 4rem;
    align-items: start;
  }

  .scene {
    position: sticky;
    top: 1.5rem;
  }

  .step {
    min-height: 70vh;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

/* Night band: sorter and call to action */

.band {
  padding-block: clamp(3rem, 2rem + 4vw, 6.5rem);
  background-color: var(--night);
  color: var(--paper);
}

.band h2,
.band h3 {
  color: var(--paper);
}

.band .eyebrow {
  color: var(--gold);
}

.band a {
  color: var(--gold);
  text-decoration-color: var(--gold);
}

.band a:hover {
  background-color: var(--gold);
  color: var(--ink);
  text-decoration-color: var(--ink);
}

.band .button {
  background-color: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.band .button:hover {
  background-color: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.band .button--ghost {
  background-color: var(--night);
  border-color: var(--paper);
  color: var(--paper);
}

.band .button--ghost:hover {
  background-color: var(--paper);
  color: var(--ink);
}

.band :focus-visible {
  outline-color: var(--paper);
}

.band .split p {
  color: var(--paper);
}

/* Sorter */

.js .no-js-only {
  display: none;
}

.sorter-live {
  display: none;
}

.js .sorter-live {
  display: block;
}

.controls {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  margin-block: 1.5rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gold);
}

.field select {
  min-height: 2.75rem;
  padding: 0.4rem 0.6rem;
  border: 2px solid var(--gold);
  border-radius: 0;
  background-color: var(--paper);
  color: var(--ink);
  font: inherit;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.sorter-figure {
  margin: 0;
}

.bars-svg {
  display: block;
  width: 100%;
  height: clamp(13rem, 9rem + 14vw, 22rem);
}

.band .axis {
  fill: var(--paper);
}

.bar {
  fill: var(--gold);
}

.bar.is-compare {
  fill: var(--ochre);
  stroke: var(--paper);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
}

.bar.is-moving {
  fill: var(--paper);
}

.bar.is-done {
  fill: var(--paper);
}

.sorter-counts {
  margin: 0 0 0.5rem;
  color: var(--gold);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.sorter-status {
  min-height: 3.3em;
  margin: 0 0 1rem;
  color: var(--paper);
}

.reduce-note {
  color: var(--paper);
}

.snap {
  margin: 2rem 0 0;
}

.snap svg {
  display: block;
  width: 100%;
  height: auto;
}

.snap-bar {
  fill: var(--gold);
}

.snap-hot {
  fill: var(--ochre);
  stroke: var(--paper);
  stroke-width: 2;
}

.snap-labels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  max-width: none;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--paper);
}

.snap-labels li {
  margin: 0;
}

.snap figcaption {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--paper);
}

/* Footer */

.site-footer {
  padding-block: clamp(2.5rem, 2rem + 2vw, 4rem) 1.5rem;
  background-color: var(--night);
  color: var(--paper);
}

.site-footer p {
  color: var(--paper);
}

.site-footer a {
  color: var(--gold);
  text-decoration-color: var(--gold);
}

.site-footer a:hover {
  background-color: var(--gold);
  color: var(--ink);
  text-decoration-color: var(--ink);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

.footer-brand {
  margin-bottom: 0.5rem;
  font-size: 1.6rem;
  font-weight: 700;
}

.copy {
  margin: 2rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--gold);
  font-size: 0.875rem;
  max-width: none;
}

@media (min-width: 720px) {
  .footer-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1.2fr);
  }
}

/* Reduced motion: every transition and the sticky figure settle to a static state */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}