:root {
  color-scheme: dark;
  --ink: #090909;
  --paper: #f5f0e5;
  --amber: #e4a83e;
  --line: color-mix(in srgb, var(--paper) 22%, transparent);
  --panel: color-mix(in srgb, var(--paper) 5%, var(--ink));
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html {
  background: var(--ink);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 82% 4%, color-mix(in srgb, var(--amber) 15%, transparent), transparent 0),
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 25% 100%,
    var(--ink);
  color: var(--paper);
}

button, textarea { font: inherit; }
button { color: inherit; }
::selection { background: var(--amber); color: var(--ink); }

.moon {
  position: fixed;
  z-index: 20;
  top: 22px;
  right: 24px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: border-color 180ms, color 180ms, transform 180ms;
}

.moon:hover, .moon:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
  transform: rotate(12deg);
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .12;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
}

.masthead, main, footer {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.masthead {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0 22px;
  border-bottom: 1px solid var(--line);
  font: 11px/1.4 ui-monospace, monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.intro {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 5vw;
  align-items: end;
  padding: 92px 0 78px;
}

.eyebrow,
.kicker,
.section-label p,
.panel-title,
.hint,
footer,
.count,
.swarm-panel > span,
.lunar p {
  margin: 0;
  font: 11px/1.5 ui-monospace, SFMono-Regular, monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.eyebrow, .kicker { color: var(--amber); }
.kicker { margin-bottom: 18px; }

h1 {
  margin: 0;
  font-size: clamp(70px, 13vw, 152px);
  font-weight: 350;
  letter-spacing: -.075em;
  line-height: .82;
}

h1 em {
  color: transparent;
  -webkit-text-stroke: 1px var(--paper);
  font-style: normal;
}

.lede {
  max-width: 420px;
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.7;
  border-left: 1px solid var(--amber);
  padding-left: 20px;
}

section {
  position: relative;
  margin: 18px;
  padding-left: 18px;
}

.section-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section-label p { color: var(--amber); }

.hint { margin-top: 12px; opacity: .55; }

.dial {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hour {
  min-width: 52px;
  padding: 12px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  font: 12px/1 ui-monospace, monospace;
  cursor: pointer;
  transition: background 160ms, color 160ms, border-color 160ms;
}

.hour[aria-checked="true"] {
  border-color: var(--amber);
  background: var(--amber);
  color: var(--ink);
}

.hour:hover, .hour:focus-visible { border-color: var(--amber); }

.composer {
  display: grid;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.composer label { color: var(--amber); }

textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  background: var(--ink);
  color: var(--paper);
  padding: 14px;
  line-height: 1.6;
}

textarea:focus { border-color: var(--amber); }

.composer button {
  justify-self: start;
  border: 1px solid var(--amber);
  background: var(--amber);
  color: var(--ink);
  padding: 12px 18px;
  cursor: pointer;
}

.trade-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1px;
  background: var(--line);
}

.log {
  min-height: 190px;
  background: var(--ink);
  padding: 18px;
}

.panel-title { color: var(--amber); }

.log ol {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.log li {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.log li span { color: var(--amber); font: 10px ui-monospace, monospace; }
.log li p { margin: 0; font-size: 13px; }
.log time { opacity: .45; font: 10px ui-monospace, monospace; }
.log .empty { display: block; opacity: .45; }

.swarm {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.moth {
  position: relative;
  aspect-ratio: 1;
  border: 0;
  border-radius: 0;
  background: var(--ink);
  cursor: pointer;
}

.moth i {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border: 1px solid var(--paper);
  transform: translate(-50%, -50%) rotate(45deg);
  opacity: .35;
  transition: width 180ms, height 180ms, opacity 180ms, background 180ms;
}

.moth span {
  position: absolute;
  right: 8px;
  bottom: 6px;
  opacity: .35;
  font: 9px ui-monospace, monospace;
}

.moth:hover, .moth:focus-visible { background: color-mix(in srgb, var(--paper) 8%, var(--ink)); }
.moth.awake i { width: 13px; height: 13px; background: var(--amber); border-color: var(--amber); opacity: 1; }
.moth.awake span { color: var(--amber); opacity: .8; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 36px 0 60px;
  opacity: .55;
}

kbd {
  border: 1px solid currentColor;
  padding: 1px 5px;
  font: inherit;
}

.lunar {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 16px;
  background: color-mix(in srgb, var(--ink) 92%, transparent);
  color: var(--paper);
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms, visibility 300ms;
}

.lunar.open { opacity: 1; visibility: visible; }
.lunar p { color: var(--amber); }
.lunar span { opacity: .6; }

.moon-cluster { position: relative; width: 180px; height: 120px; }
.moon-cluster i {
  position: absolute;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 34px color-mix(in srgb, var(--amber) 65%, transparent);
  animation: drift 3.4s ease-in-out infinite alternate;
}
.moon-cluster i:nth-child(1) { top: 40px; left: 30px; }
.moon-cluster i:nth-child(2) { top: 10px; left: 76px; animation-delay: -.6s; }
.moon-cluster i:nth-child(3) { top: 42px; left: 118px; animation-delay: -1.2s; }
.moon-cluster i:nth-child(4) { top: 72px; left: 64px; animation-delay: -1.8s; }
.moon-cluster i:nth-child(5) { top: 72px; left: 142px; animation-delay: -2.4s; }

@keyframes drift {
  to { transform: translateY(-12px) scale(1.08); }
}

@media (max-width: 720px) {
  .masthead, main, footer { width: min(100% - 28px, 1120px); }
  .moon { top: 14px; right: 14px; }
  .intro { grid-template-columns: 1fr; padding: 64px 0 54px; }
  h1 { font-size: clamp(64px, 22vw, 100px); }
  section { margin: 12px; padding-left: 12px; }
  .trade-columns { grid-template-columns: 1fr; }
  .swarm { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  footer { flex-direction: column; }
}

@media (max-width: 390px) {
  .masthead { flex-direction: column; }
  .swarm { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .log li { grid-template-columns: 24px 1fr; }
  .log time { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}