/* Concepts is the subject-first entrance to the Artificially.cloud record graph. */

.concepts-index-page {
  background: var(--paper);
}

.concepts-header {
  padding-bottom: clamp(20px, 2.4vw, 34px);
}

.concepts-lead {
  display: grid;
  grid-template-columns: minmax(125px, 1.1fr) minmax(0, 5.4fr) minmax(180px, 1.35fr);
  gap: clamp(24px, 4vw, 68px);
  align-items: end;
  padding-top: clamp(24px, 3vw, 42px);
}

.concepts-lead .eyebrow {
  align-self: start;
  margin: 4px 0 0;
  color: var(--lichen-bright);
}

.concepts-lead h1 {
  max-width: 24ch;
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.concepts-lead > div > p {
  max-width: 68ch;
  margin: 16px 0 0;
  color: var(--fog);
  font-size: clamp(1rem, 1.35vw, 1.22rem);
  line-height: 1.55;
}

.concepts-lead__note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--hairline-dark);
  color: var(--ash);
  font: 700 0.66rem/1.75 var(--mono);
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.world-rail {
  border-top: 1px solid var(--hairline-dark);
  border-bottom: 1px solid var(--hairline-dark);
}

.world-rail__inner {
  display: grid;
  grid-template-columns: minmax(125px, 1.1fr) minmax(0, 6.75fr);
  gap: clamp(24px, 4vw, 68px);
  align-items: stretch;
}

.world-rail__inner > p {
  align-self: center;
  margin: 0;
  color: var(--lichen-bright);
  font: 800 0.68rem/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.world-rail ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--hairline-dark);
  list-style: none;
}

.world-rail li {
  min-width: 0;
  border-right: 1px solid var(--hairline-dark);
}

.world-rail a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 14px;
  align-content: center;
  min-height: 78px;
  padding: 12px clamp(14px, 2vw, 28px);
  color: var(--chalk);
  text-decoration: none;
}

.world-rail a:hover,
.world-rail a:focus-visible {
  color: var(--lichen-bright);
  box-shadow: inset 0 -3px 0 var(--lichen-bright);
}

.world-rail a > span {
  grid-row: 1 / span 2;
  padding-top: 3px;
  color: var(--ash);
  font: 700 0.61rem/1.35 var(--mono);
  letter-spacing: 0.045em;
}

.world-rail strong {
  min-width: 0;
  overflow: hidden;
  font-family: var(--sans);
  font-size: 0.93rem;
  font-weight: 650;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.world-rail small {
  color: var(--ash);
  font: 700 0.61rem/1.35 var(--mono);
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.world-register {
  width: var(--page);
  margin: 0 auto;
  padding: clamp(26px, 3.5vw, 52px) 0 clamp(72px, 9vw, 132px);
}

.world-strip {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
  min-height: 520px;
  border-top: 1px solid var(--hairline-light);
  scroll-margin-top: 18px;
}

.world-strip:last-child {
  border-bottom: 1px solid var(--hairline-light);
}

.world-strip--reverse .world-figure {
  grid-column: 2;
}

.world-strip--reverse .world-copy {
  grid-column: 1;
  grid-row: 1;
  border-right: 1px solid var(--hairline-light);
  border-left: 0;
}

.world-figure {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  margin: 0;
  background: var(--black);
}

.world-figure img {
  width: 100%;
  height: auto;
  max-height: 560px;
  object-fit: contain;
}

.world-figure figcaption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 16px;
  border-top: 1px solid var(--hairline-dark);
  color: var(--ash);
  font: 700 0.6rem/1.45 var(--mono);
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.world-figure figcaption span {
  color: var(--lichen-bright);
}

.world-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(30px, 4.7vw, 74px);
  border-left: 1px solid var(--hairline-light);
}

.world-coordinate {
  display: flex;
  gap: 16px;
  align-items: baseline;
  margin: 0;
  color: var(--mineral);
  font: 700 0.68rem/1.4 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.world-coordinate span {
  color: var(--lichen-dark);
}

.world-copy h2 {
  max-width: 24ch;
  margin: clamp(30px, 4vw, 58px) 0 18px;
  font-family: var(--sans);
  font-size: clamp(1.75rem, 2.8vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.world-question {
  max-width: 34ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.25rem, 1.8vw, 1.65rem);
  line-height: 1.3;
}

.world-state {
  max-width: 60ch;
  margin: 22px 0 34px;
  color: var(--graphite);
  font-size: 0.96rem;
  line-height: 1.55;
}

.world-state strong {
  color: var(--ink);
}

.world-actions {
  margin-top: auto;
  border-top: 1px solid var(--hairline-light);
}

.world-actions ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
}

.world-actions li:nth-child(odd) {
  border-right: 1px solid var(--hairline-light);
}

.world-actions li:nth-child(-n + 2) {
  border-bottom: 1px solid var(--hairline-light);
}

.world-actions a {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-height: 58px;
  padding: 10px 12px;
  color: var(--ink);
  font: 800 0.67rem/1.3 var(--mono);
  letter-spacing: 0.035em;
  text-decoration: none;
  text-transform: uppercase;
}

.world-actions a span {
  color: var(--mineral);
  font-size: 0.58rem;
}

.world-actions a::after {
  content: "↗";
  grid-column: 3;
  justify-self: end;
  color: var(--lichen-dark);
  font-size: 0.92rem;
}

.world-actions a:hover,
.world-actions a:focus-visible {
  background: var(--paper-bright);
  color: var(--lichen-dark);
  box-shadow: inset 0 -3px 0 var(--lichen);
}

@media (max-width: 1040px) {
  .concepts-lead {
    grid-template-columns: minmax(110px, 1fr) minmax(0, 4fr);
  }

  .concepts-lead__note {
    grid-column: 2;
  }

  .world-rail__inner {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .world-rail__inner > p {
    padding: 12px 0;
    border-bottom: 1px solid var(--hairline-dark);
  }

  .world-rail ol {
    border-left: 0;
  }

  .world-strip {
    grid-template-columns: minmax(0, 1fr) minmax(330px, 0.9fr);
  }

  .world-copy {
    padding: clamp(28px, 3.4vw, 48px);
  }

  .world-actions ul {
    grid-template-columns: 1fr;
  }

  .world-actions li:nth-child(odd) {
    border-right: 0;
  }

  .world-actions li:nth-child(-n + 3) {
    border-bottom: 1px solid var(--hairline-light);
  }
}

@media (max-width: 760px) {
  .concepts-header {
    padding-bottom: 34px;
  }

  .concepts-lead {
    grid-template-columns: 1fr;
    gap: 22px;
    padding-top: 34px;
  }

  .concepts-lead .eyebrow,
  .concepts-lead__note {
    grid-column: 1;
  }

  .concepts-lead h1 {
    max-width: 24ch;
    font-size: clamp(2rem, 4vw, 3.5rem);
  }

  .concepts-lead__note {
    padding-top: 12px;
  }

  .world-rail ol {
    grid-template-columns: 1fr;
  }

  .world-rail li {
    border-right: 0;
    border-bottom: 1px solid var(--hairline-dark);
  }

  .world-rail li:last-child {
    border-bottom: 0;
  }

  .world-rail a {
    min-height: 64px;
    padding-right: 0;
    padding-left: 0;
  }

  .world-strip,
  .world-strip--reverse {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .world-strip .world-figure,
  .world-strip--reverse .world-figure,
  .world-strip .world-copy,
  .world-strip--reverse .world-copy {
    grid-column: 1;
    grid-row: auto;
  }

  .world-strip--reverse .world-copy,
  .world-copy {
    padding: 30px 0 44px;
    border-right: 0;
    border-left: 0;
  }

  .world-coordinate {
    margin-bottom: 0;
  }

  .world-copy h2 {
    max-width: 24ch;
    margin: 28px 0 16px;
  }

  .world-figure figcaption {
    display: grid;
    gap: 4px;
    padding-right: 12px;
    padding-left: 12px;
  }

  .world-actions ul {
    grid-template-columns: 1fr 1fr;
  }

  .world-actions li:nth-child(odd) {
    border-right: 1px solid var(--hairline-light);
  }

  .world-actions li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--hairline-light);
  }

  .world-actions li:nth-child(3) {
    border-bottom: 0;
  }
}

@media (max-width: 480px) {
  .world-actions ul {
    grid-template-columns: 1fr;
  }

  .world-actions li:nth-child(odd) {
    border-right: 0;
  }

  .world-actions li:nth-child(-n + 3) {
    border-bottom: 1px solid var(--hairline-light);
  }
}

@media (forced-colors: active) {
  .world-rail,
  .world-strip,
  .world-actions {
    border-color: CanvasText;
  }

  .world-rail a:hover,
  .world-rail a:focus-visible,
  .world-actions a:hover,
  .world-actions a:focus-visible {
    outline: 2px solid Highlight;
  }
}