/* seattle.ad inner pages: the history voyage, the sources and the fog of the 404. */

.page-head {
  padding: calc(var(--bar-h) + 34px) var(--gutter) 26px;
  max-width: 900px;
}
.page-head h1 {
  font-size: clamp(54px, 14vw, 112px);
  line-height: 0.9;
  letter-spacing: -0.025em;
  margin: 14px 0 0;
}
.page-head h1 em {
  color: var(--route-text);
}
.page-head .lede {
  font-size: 19px;
  line-height: 1.5;
  max-width: 34em;
  margin: 18px 0 0;
  color: var(--ink-2);
}
svg.defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* ---------- the voyage ---------- */
.voyage {
  position: relative;
  padding: 0 var(--gutter) 40px;
}

/* the little chart: a strip under the bar on a phone, a column at the side on a desk */
.vignette {
  position: sticky;
  top: var(--bar-h);
  z-index: 5;
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 14px;
  align-items: center;
  margin: 0 calc(-1 * var(--gutter));
  padding: 10px var(--gutter);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid var(--rule);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.vignette-frame {
  position: relative;
  aspect-ratio: 1 / 0.9;
  border: 1px solid var(--ink);
  outline: 1px solid var(--rule);
  outline-offset: 2px;
  overflow: hidden;
  background: var(--c-water);
}
.vignette-frame svg {
  display: block;
  width: 100%;
  height: 100%;
}
.vignette-caption {
  margin: 0;
  display: grid;
  gap: 4px;
  min-width: 0;
}
.vignette-year {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--route-text);
}
.vignette-title {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.05;
}

/* marks on the little chart: pencil-faint until their moment, then inked, the current one ringed red */
.hm {
  opacity: 0.0;
  transition: opacity 0.6s ease;
}
.hm.inked {
  opacity: 1;
}
.hm-halo {
  fill: var(--route);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.hm-ring {
  fill: var(--c-water);
  stroke: var(--ink);
  stroke-width: 1.4;
  opacity: 0;
}
.hm-dot {
  fill: var(--ink);
  stroke: var(--c-water);
}
.hm.on .hm-ring {
  opacity: 1;
}
.hm.on .hm-halo {
  opacity: 0.16;
}
.hm.on .hm-ring {
  stroke: var(--route);
  stroke-width: 2.2;
}
.hm.on .hm-dot {
  fill: var(--route);
}
.hm-route {
  fill: none;
  stroke: var(--c-route);
  stroke-width: 2;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.6s ease;
}
.hm-route.inked {
  stroke-dashoffset: 0;
}
.hm-route.on {
  stroke-width: 3;
}

/* the moments, down the chart's neatline */
.moments {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 30px;
  position: relative;
  max-width: 640px;
}
.moments::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 0;
  width: 6px;
  border: 1px solid var(--ink);
  background: repeating-linear-gradient(180deg, var(--ink) 0 48px, transparent 48px 96px);
  opacity: 0.85;
}
.moment {
  position: relative;
  padding: 6px 0 40px;
}
.moment::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 14px;
  width: 22px;
  height: 1px;
  background: var(--ink);
}
.moment::after {
  content: "";
  position: absolute;
  left: -12px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  background: var(--paper);
  transition: background-color 0.3s, border-color 0.3s;
}
.moment.past::after {
  background: var(--ink);
}
.moment.on::after {
  background: var(--route);
  border-color: var(--route);
}
.moment .year {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--route-text);
  margin: 0;
}
.moment h2 {
  font-size: clamp(30px, 7.5vw, 40px);
  margin: 8px 0 10px;
}
.moment p {
  margin: 0 0 10px;
  max-width: 34em;
}
.moment .src {
  max-width: 560px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}
.moment .src::before {
  content: "§ ";
  color: var(--brass-text);
}
.moment .src a {
  text-decoration-color: var(--brass);
  text-underline-offset: 4px;
}
.moment .src .maps {
  display: table;
  margin-top: 6px;
  text-decoration-color: var(--route);
}
.moment .src .maps::after {
  content: "\00a0↗";
  color: var(--route-text);
}
.old-photo {
  margin: 16px 0 14px;
  max-width: 520px;
}
.old-photo img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ink);
  outline: 6px solid var(--paper-hi);
  outline-offset: 0;
  box-shadow: 0 0 0 7px var(--rule), 0 10px 24px -12px var(--shadow);
  filter: sepia(0.18) contrast(1.02);
}
.old-photo figcaption {
  margin-top: 14px;
  color: var(--ink-2);
  font-style: italic;
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.35;
}

/* an era begins: brass dividers set on the neatline, measuring off the next stretch */
.era {
  position: relative;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  margin: 14px 0 30px -46px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass-text);
}
.era::after {
  content: "";
  flex: 1;
  height: 1px;
  margin-bottom: 5px;
  background: linear-gradient(90deg, var(--brass), transparent);
}
.era:first-child {
  margin-top: 0;
}
.dividers {
  flex: none;
  width: 34px;
  height: 40px;
  overflow: visible;
}
.dv-leg {
  fill: var(--brass);
  stroke: var(--brass-lo);
  stroke-width: 0.6;
}
.dv-tip {
  fill: var(--ink);
}
.dv-arc {
  fill: none;
  stroke: var(--brass-lo);
  stroke-width: 1.2;
}
.dv-hinge {
  fill: var(--brass-hi);
  stroke: var(--brass-lo);
  stroke-width: 0.8;
}
.dv-pin {
  fill: var(--brass-lo);
}

.onward-line {
  padding: 10px var(--gutter) 60px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.onward-line p {
  flex-basis: 100%;
  margin: 0 0 4px;
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.15;
}

@media (min-width: 960px) {
  .voyage {
    display: grid;
    grid-template-columns: minmax(340px, 440px) minmax(0, 640px);
    gap: 64px;
    align-items: start;
    justify-content: center;
  }
  .history-page .page-head {
    max-width: none;
    width: min(100%, calc(440px + 64px + 640px + 2 * var(--gutter)));
    margin: 0 auto;
  }
  .vignette {
    top: calc(var(--bar-h) + 24px);
    margin: 0;
    padding: 0;
    display: block;
    background: none;
    border: 0;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
  .vignette-frame {
    aspect-ratio: auto;
    height: min(calc(100svh - var(--bar-h) - 150px), 520px);
    box-shadow: 0 18px 40px -26px var(--shadow);
  }
  .vignette-caption {
    margin-top: 16px;
  }
  .vignette-title {
    font-size: 28px;
  }
  .moments {
    margin-top: 0;
  }
  .onward-line {
    width: min(100%, calc(440px + 64px + 640px + 2 * var(--gutter)));
    margin: 0 auto;
    padding-left: calc(var(--gutter) + 440px + 64px);
  }
}

/* ---------- sources ---------- */
.sources-page main {
  padding-bottom: 40px;
}
.src-toc {
  padding: 0 var(--gutter) 18px;
}
.src-toc ol {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.src-toc a {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 14px;
  text-decoration: none;
  background: var(--paper-hi);
}
.src-toc a:hover {
  border-color: var(--route);
}
@media (min-width: 1100px) {
  .src-body {
    display: grid;
    grid-template-columns: minmax(0, 900px) 280px;
    gap: 40px;
    align-items: start;
  }
  .src-toc {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--bar-h) + 30px);
    padding: 18px 0 0;
  }
  .src-toc ol {
    display: block;
    border-left: 1px solid var(--ink);
    margin-top: 14px;
  }
  .src-toc li {
    margin: 0;
  }
  .src-toc a {
    display: block;
    border: 0;
    border-radius: 0;
    background: none;
    padding: 6px 0 6px 16px;
    font-family: var(--serif);
    font-size: 20px;
    line-height: 1.15;
  }
  .src-toc a:hover {
    color: var(--route-text);
  }
  .src-main {
    grid-column: 1;
    grid-row: 1;
  }
}
.src-section {
  padding: 18px var(--gutter) 26px;
  max-width: 900px;
}
.src-section h2 {
  font-size: clamp(32px, 7vw, 44px);
  margin: 0 0 6px;
}
.src-section > p {
  margin: 0 0 16px;
  color: var(--ink-2);
  max-width: 40em;
}
.src-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.src-list > li {
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}
.src-claim {
  margin: 0 0 6px;
}
.src-refs {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  color: var(--ink-2);
}
.src-refs li {
  margin: 3px 0;
  overflow-wrap: anywhere;
}
.src-refs a {
  text-decoration-color: var(--brass);
  text-underline-offset: 3px;
}
.src-read {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  display: block;
  margin-top: 2px;
}
.src-note {
  font-size: 13.5px;
  color: var(--ink-2);
  font-style: italic;
  margin: 6px 0 0;
}
.src-photo {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  align-items: start;
}
.src-photo img {
  width: 72px;
  height: 54px;
  object-fit: cover;
  border: 1px solid var(--ink);
}
.src-photo p {
  margin: 0;
  font-size: 14px;
  overflow-wrap: anywhere;
}
.src-photo p + p {
  color: var(--ink-2);
}

/* ---------- 404 ---------- */
.lost {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-content: center;
  overflow: hidden;
}
.lost-chart {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.lost-chart svg {
  position: absolute;
  left: 50%;
  top: 50%;
}
.lost-fog {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(70% 42% at 50% 50%, color-mix(in srgb, var(--paper) 97%, transparent), color-mix(in srgb, var(--paper) 86%, transparent) 60%, color-mix(in srgb, var(--paper) 55%, transparent));
}
.fog-bank {
  position: absolute;
  left: -20%;
  width: 140%;
  height: 34%;
  border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--paper) 90%, transparent), transparent);
  animation: drift 28s ease-in-out infinite alternate;
}
.fog-bank.b1 {
  top: 8%;
}
.fog-bank.b2 {
  top: 58%;
  animation-duration: 36s;
  animation-direction: alternate-reverse;
}
@keyframes drift {
  from {
    transform: translateX(-6%);
  }
  to {
    transform: translateX(6%);
  }
}
.lost-words {
  position: relative;
  z-index: 2;
  padding: calc(var(--bar-h) + 30px) var(--gutter) 60px;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.lost-words h1 {
  font-size: clamp(46px, 11vw, 92px);
  line-height: 0.95;
  margin: 16px 0 18px;
}
.lost-words p {
  margin: 0 auto 26px;
  max-width: 32em;
  color: var(--ink-2);
}
.lost-words .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.foghorn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brass-text);
}

/* calm mode: nothing travels and nothing draws itself in */
@media (prefers-reduced-motion: reduce) {
  .hm,
  .hm-halo,
  .hm-route,
  .moment::after {
    transition: none;
  }
  .fog-bank {
    animation: none;
  }
}