/* Lantern Yard: Train Puzzle. One shared stylesheet, nothing loaded from elsewhere. */

:root {
  --night: #121733;
  --plum: #33213F;
  --cream: #FAF0DB;
  --cream-soft: rgba(250, 240, 219, 0.78);
  --cream-line: rgba(250, 240, 219, 0.16);
  --gold: #FFCC6B;
  --enamel-top: #21307A;
  --enamel-foot: #121A4A;
  --display: "DIN Condensed", "Barlow Condensed", "Arial Narrow", sans-serif;
  --text: "Avenir Next", -apple-system, "Segoe UI", sans-serif;
}

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

html {
  background: var(--night);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  color: var(--cream);
  font-family: var(--text);
  font-size: 1.0625rem;
  line-height: 1.65;
  background: linear-gradient(180deg, var(--night) 0%, var(--plum) 100%);
  -webkit-font-smoothing: antialiased;
}

/* A few early stars at the top of the sky. */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 460px;
  pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 4% 24%, rgba(250, 240, 219, 0.9) 50%, transparent 51%),
    radial-gradient(1px 1px at 17% 42%, rgba(250, 240, 219, 0.7) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 29% 8%, rgba(250, 240, 219, 0.75) 50%, transparent 51%),
    radial-gradient(1px 1px at 38% 30%, rgba(250, 240, 219, 0.55) 50%, transparent 51%),
    radial-gradient(1px 1px at 52% 17%, rgba(250, 240, 219, 0.8) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 63% 46%, rgba(250, 240, 219, 0.55) 50%, transparent 51%),
    radial-gradient(1px 1px at 71% 11%, rgba(250, 240, 219, 0.7) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 83% 27%, rgba(250, 240, 219, 0.85) 50%, transparent 51%),
    radial-gradient(1px 1px at 92% 52%, rgba(250, 240, 219, 0.6) 50%, transparent 51%),
    radial-gradient(1px 1px at 96% 9%, rgba(250, 240, 219, 0.75) 50%, transparent 51%),
    radial-gradient(1px 1px at 11% 68%, rgba(250, 240, 219, 0.45) 50%, transparent 51%),
    radial-gradient(1px 1px at 46% 62%, rgba(250, 240, 219, 0.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 78% 71%, rgba(250, 240, 219, 0.4) 50%, transparent 51%);
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 30%, transparent 100%);
}

.wrap {
  width: 100%;
  max-width: 712px; /* 680px of text plus the 16px gutters */
  margin: 0 auto;
  padding: 0 16px;
}

a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Header */

.site-header {
  position: relative;
  padding: 14px 0 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--cream);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.brand img {
  display: block;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  box-shadow: 0 0 0 1px rgba(250, 240, 219, 0.22), 0 4px 12px rgba(0, 0, 0, 0.45);
}

.brand span,
.site-nav a,
.footer-nav a {
  /* DIN Condensed sits high in its line box; nudge it back to the middle. */
  padding-top: 0.22em;
}

.site-nav {
  display: flex;
  gap: 20px;
}

.site-nav a,
.footer-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--cream-soft);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-nav a:hover,
.footer-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--gold);
}

/* Station nameboard */

.nameboard {
  position: relative;
  margin: 26px 0 0;
  padding: 34px 22px 26px;
  text-align: center;
  border-radius: 14px;
  background: linear-gradient(180deg, var(--enamel-top) 0%, var(--enamel-foot) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    inset 0 -1px 0 rgba(0, 0, 0, 0.35),
    0 22px 44px -20px rgba(0, 0, 0, 0.75),
    0 0 0 1px rgba(8, 12, 40, 0.6);
}

.nameboard::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1.5px solid rgba(250, 240, 219, 0.88);
  border-radius: 8px;
  pointer-events: none;
}

.nameboard h1 {
  margin: 0;
  padding-left: 0.14em; /* balances the trailing letter-space so the name sits centred */
  color: var(--cream);
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2rem, 9.4vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-wrap: balance;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
}

.nameboard p {
  margin: 8px 0 0;
  padding-left: 0.3em;
  color: var(--gold);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

/* Home */

main {
  position: relative;
  flex: 1 0 auto;
  padding-bottom: 56px;
}

.lamp {
  position: relative;
  display: flex;
  justify-content: center;
  margin: 34px 0 0;
}

/* Lamp light pooling behind the icon. */
.lamp::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(320px, 100%);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(255, 204, 107, 0.2), rgba(255, 204, 107, 0));
}

.app-icon {
  position: relative;
  display: block;
  width: 132px;
  height: 132px;
  border-radius: 30px;
  box-shadow:
    0 0 0 1px rgba(250, 240, 219, 0.22),
    0 18px 40px -12px rgba(0, 0, 0, 0.7),
    0 0 46px rgba(255, 204, 107, 0.18);
}

.lead {
  margin: 30px 0 0;
  font-size: 1.1875rem;
  line-height: 1.6;
}

.facts {
  margin: 18px 0 0;
  color: var(--gold);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.3;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.facts span + span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 14px 0 10px;
  vertical-align: 0.24em;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px 1px rgba(255, 204, 107, 0.6);
}

.tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 30px 0 0;
}

@media (min-width: 600px) {
  .tiles {
    grid-template-columns: 1fr 1fr;
  }
}

.tile {
  display: block;
  padding: 18px 20px 20px;
  color: var(--cream);
  text-decoration: none;
  border: 1px solid var(--cream-line);
  border-radius: 14px;
  background: rgba(18, 23, 51, 0.5);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.tile:hover {
  border-color: rgba(255, 204, 107, 0.7);
  background: rgba(33, 48, 122, 0.35);
}

.tile-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  color: var(--gold);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.45rem;
  line-height: 1.1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tile-title::after {
  content: "\2192";
  font-family: var(--text);
  font-weight: 400;
  letter-spacing: 0;
}

.tile-text {
  display: block;
  margin-top: 6px;
  color: var(--cream-soft);
  font-size: 1rem;
  line-height: 1.5;
}

/* Support and Privacy */

.doc-body {
  margin-top: 14px;
}

.doc-body section {
  padding: 26px 0 4px;
}

.doc-body section + section {
  margin-top: 22px;
  border-top: 1px solid var(--cream-line);
}

.doc-body h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  color: var(--gold);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* A small lit lamp in front of each heading. */
.doc-body h2::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px 2px rgba(255, 204, 107, 0.55);
  transform: translateY(-0.2em);
}

.doc-body p {
  margin: 0 0 14px;
}

.doc-body ul {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.doc-body li {
  position: relative;
  margin: 0 0 6px;
  padding-left: 22px;
}

.doc-body li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cream-soft);
}

.doc-body a {
  overflow-wrap: anywhere;
}

.intro {
  margin: 28px 0 0;
  font-size: 1.125rem;
}

.callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 20px;
  margin: 28px 0 0;
  padding: 18px 20px;
  border: 1px solid var(--cream-line);
  border-radius: 14px;
  background: rgba(18, 23, 51, 0.5);
}

.callout p {
  margin: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 22px;
  color: var(--night);
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  background: var(--gold);
  box-shadow: 0 0 24px rgba(255, 204, 107, 0.28);
}

.button:hover {
  background: #ffd98a;
}

/* Footer */

.site-footer {
  position: relative;
  flex: 0 0 auto;
  padding-bottom: 30px;
  color: var(--cream-soft);
  font-size: 0.9375rem;
  text-align: center;
}

/* A length of track seen from above: two rails over sleepers. */
.track {
  height: 26px;
  margin-bottom: 24px;
  opacity: 0.85;
  background:
    linear-gradient(180deg,
      transparent 5px, #aab6ee 5px, #aab6ee 7px, transparent 7px,
      transparent 19px, #aab6ee 19px, #aab6ee 21px, transparent 21px),
    repeating-linear-gradient(90deg, #6e4a3c 0, #6e4a3c 9px, transparent 9px, transparent 30px) center;
}

.publisher {
  margin: 0;
  color: var(--cream);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.2;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0 0 4px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  margin-top: 6px;
}

@media (max-width: 380px) {
  .brand {
    font-size: 1.05rem;
    letter-spacing: 0.1em;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav a {
    font-size: 0.98rem;
    letter-spacing: 0.1em;
  }

  .nameboard {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tile {
    transition: none;
  }
}