:root {
  color-scheme: light;
  --paper: #eee9dc;
  --paper-raised: #fffdf6;
  --ink: #18201d;
  --muted: #59645e;
  --line: #9ba39c;
  --teal: #006b71;
  --teal-dark: #004c51;
  --yellow: #f7c948;
  --red: #bf3d2f;
  --shadow: 0 14px 35px rgba(24, 32, 29, 0.12);
  --display: "Avenir Next Condensed", "Arial Narrow", "Helvetica Neue", sans-serif;
  --body: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  --data: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  overflow-x: clip;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(rgba(24, 32, 29, 0.04) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 28px;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 1rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: white;
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.masthead,
main,
footer {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  text-decoration: none;
  text-transform: uppercase;
}

.wordmark span {
  color: var(--teal);
}

.repo-mark,
.date-line,
.strip-kind,
.source-id,
dt {
  font-family: var(--data);
  font-size: 0.75rem;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.repo-mark {
  color: var(--muted);
}

.briefing {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.36fr);
  gap: clamp(2rem, 7vw, 8rem);
  align-items: end;
  padding: clamp(4rem, 9vw, 8.5rem) 0 clamp(3rem, 7vw, 6rem);
}

.date-line {
  margin: 0 0 1rem;
  color: var(--teal-dark);
  font-weight: 700;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3rem, 7.5vw, 6rem);
  font-stretch: condensed;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.92;
}

.clearance {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.2rem 0;
  border-block: 1px solid var(--line);
}

.clearance-light {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 0.15rem;
  background: var(--yellow);
  border: 1px solid var(--ink);
  border-radius: 50%;
  box-shadow: 2px 3px 0 rgba(24, 32, 29, 0.18);
}

.clearance.is-valid .clearance-light {
  background: var(--teal);
}

.clearance.is-invalid .clearance-light {
  background: var(--red);
}

.clearance strong,
.clearance span {
  display: block;
}

.clearance strong {
  font-family: var(--display);
  font-size: 1.25rem;
}

.clearance div > span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.route-board {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2rem);
  background: #d9d5c9;
  border: 1px solid #8e9189;
  box-shadow: var(--shadow);
}

.route-heading {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 2rem;
  align-items: end;
  padding: 0.5rem 0 1.5rem;
}

.route-heading h2,
.provenance h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.025em;
  line-height: 1;
}

.route-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 0;
}

.route-facts div {
  min-width: 0;
}

dt {
  margin-bottom: 0.35rem;
  color: var(--muted);
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-weight: 700;
}

.itinerary {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.strip {
  position: relative;
  display: grid;
  grid-template-columns: minmax(118px, 0.25fr) minmax(0, 1fr) minmax(150px, 0.3fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: center;
  min-height: 112px;
  padding: 1.1rem 1.3rem;
  overflow: hidden;
  background:
    linear-gradient(90deg, var(--strip-color, var(--yellow)) 0 8px, transparent 8px),
    var(--paper-raised);
  border: 1px solid #9c9a91;
  box-shadow: 3px 5px 0 rgba(24, 32, 29, 0.12);
}

.strip::after {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  width: 6px;
  height: calc(100% - 1.3rem);
  border-left: 1px dashed #b4b0a5;
  content: "";
}

.strip[data-type="break"] {
  --strip-color: var(--teal);
  background:
    linear-gradient(90deg, var(--teal) 0 8px, transparent 8px),
    #def1ed;
}

.strip[data-type="travel"] {
  --strip-color: #7a6d94;
}

.strip-time {
  display: flex;
  gap: 0.3rem;
  align-items: baseline;
  font-family: var(--data);
  font-weight: 700;
}

.strip-time .start {
  font-size: 1.25rem;
}

.strip-time .end,
.strip-time span {
  color: var(--muted);
  font-size: 0.8rem;
}

.strip-main {
  min-width: 0;
}

.strip-kind {
  margin: 0 0 0.35rem;
  color: var(--teal-dark);
  font-weight: 700;
}

.strip h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.25rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.strip-detail {
  max-width: 68ch;
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.strip-meta {
  padding-right: 1rem;
  text-align: right;
}

.location {
  margin: 0 0 0.65rem;
  font-weight: 700;
}

.source-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0.4rem 0.55rem;
  background: var(--ink);
  color: white;
  text-decoration: none;
}

.source-link:hover {
  background: var(--teal-dark);
}

.source-id {
  overflow-wrap: anywhere;
}

.source-link[hidden] {
  display: none;
}

.provenance {
  display: grid;
  grid-template-columns: 0.6fr 1fr auto;
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: start;
  margin-block: clamp(4rem, 8vw, 8rem);
  padding-top: 2rem;
  border-top: 2px solid var(--ink);
}

.provenance p {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.provenance a {
  font-weight: 800;
  text-underline-offset: 0.25em;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.5rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

footer p {
  margin: 0;
}

.error-strip {
  padding: 1.5rem;
  background: #f7ddd8;
  border: 1px solid var(--red);
  color: #661a13;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  .repo-mark {
    display: none;
  }

  .briefing,
  .route-heading,
  .provenance {
    grid-template-columns: 1fr;
  }

  .briefing {
    gap: 2.5rem;
  }

  .route-facts {
    grid-template-columns: 1fr 1fr;
  }

  .strip {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 1.2rem 1.3rem 1.35rem;
  }

  .strip-time {
    justify-content: flex-start;
  }

  .strip-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-right: 0.5rem;
    text-align: left;
  }

  .location {
    margin: 0;
  }

  footer {
    display: grid;
  }
}

@media (max-width: 480px) {
  .route-facts {
    grid-template-columns: 1fr;
  }

  .strip-meta {
    display: grid;
    justify-content: start;
  }

  .source-link {
    justify-self: start;
    max-width: 100%;
  }
}

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

  .strip {
    animation: strip-arrival 480ms cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: calc(var(--index, 0) * 70ms);
  }

  @keyframes strip-arrival {
    from {
      filter: blur(4px);
      transform: translateX(-18px);
      opacity: 0.01;
    }
  }
}