:root {
  color-scheme: dark;
  font-family: Inter, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: #f7f4eb;
  background: #081426;
  --night: #081426;
  --panel: #10233b;
  --line: #29425f;
  --mint: #62e6bd;
  --moon: #ffe9a8;
  --muted: #a9b8ca;
  --pink: #ff9fb3;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 78% 12%, rgba(255, 233, 168, .14), transparent 22rem),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px),
    var(--night);
  background-size: auto, 34px 34px, 34px 34px, auto;
}

button, a { font: inherit; }
a { color: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 4px;
}

.site-header,
main {
  width: min(92vw, 1120px);
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 68px;
  border-bottom: 1px solid var(--line);
}

.site-header a {
  color: var(--mint);
  font-size: .9rem;
  font-weight: 800;
  text-decoration: none;
}

.site-header p {
  margin: 0;
  color: var(--muted);
  font: 700 .72rem/1 ui-monospace, monospace;
  letter-spacing: .08em;
}

main {
  display: grid;
  grid-template-columns: minmax(210px, .55fr) minmax(0, 1.45fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  padding: clamp(2.5rem, 6vw, 5rem) 0 4rem;
}

.intro { align-self: start; position: sticky; top: 2rem; }
.eyebrow { margin: 0 0 .8rem; color: var(--mint); font: 800 .72rem/1 ui-monospace, monospace; letter-spacing: .14em; }

h1 {
  margin: 0;
  font-size: clamp(3.3rem, 8vw, 6.2rem);
  line-height: .88;
  letter-spacing: -.07em;
}

h1 span { color: var(--moon); }
.intro > p:last-child { margin: 1.5rem 0 0; color: var(--muted); font-size: 1rem; line-height: 1.8; }

.game-panel,
.help {
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: rgba(16, 35, 59, .9);
  box-shadow: 0 25px 70px rgba(0,0,0,.28);
}

.scoreboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.scoreboard p { margin: 0; padding: 1rem 1.2rem; border-right: 1px solid var(--line); }
.scoreboard p:last-child { border-right: 0; }
.scoreboard span { display: block; margin-bottom: .35rem; color: var(--muted); font-size: .72rem; font-weight: 750; }
.scoreboard strong { color: var(--moon); font-size: 1rem; }
.scoreboard b { font-size: 1.35rem; }

.stage-wrap { position: relative; overflow: hidden; border-radius: 0 0 1rem 1rem; }

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 720 / 520;
  background: #07111f;
}

.burapi {
  position: absolute;
  right: 22%;
  bottom: 31%;
  width: max-content;
  pointer-events: none;
}

.burapi p {
  width: max-content;
  max-width: 180px;
  margin: 0;
  padding: .55rem .75rem;
  border-radius: .8rem .8rem .2rem .8rem;
  color: var(--night);
  background: #fff;
  font-size: clamp(.65rem, 1.5vw, .82rem);
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(0,0,0,.2);
}

.status { min-height: 1.6em; margin: 1.15rem 1.2rem .8rem; color: #d9e3ee; text-align: center; font-weight: 700; }

.action {
  display: block;
  width: calc(100% - 2.4rem);
  min-height: 58px;
  margin: 0 1.2rem;
  border: 0;
  border-radius: 999px;
  color: var(--night);
  background: var(--mint);
  font-size: 1.05rem;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(98, 230, 189, .2);
}

.action:hover:not(:disabled) { background: #8fffdc; transform: translateY(-1px); }
.action:disabled { opacity: .55; cursor: wait; }
.key-hint { margin: .8rem 0 1.2rem; color: var(--muted); font-size: .78rem; text-align: center; }
kbd { padding: .15rem .4rem; border: 1px solid #52647b; border-radius: .3rem; background: #09182a; }

.help { grid-column: 2; display: grid; grid-template-columns: .8fr 1.2fr; gap: 1.5rem; margin-top: 1.2rem; padding: 1.5rem; }
.help h2 { margin: 0; font-size: clamp(1.35rem, 3vw, 2rem); line-height: 1.25; }
.help ol { display: grid; gap: .8rem; margin: 0; padding: 0; list-style: none; }
.help li { display: grid; grid-template-columns: 1.8rem 1fr; gap: .7rem; align-items: center; color: var(--muted); font-size: .92rem; line-height: 1.55; }
.help li span { display: grid; place-items: center; width: 1.8rem; height: 1.8rem; border-radius: 50%; color: var(--night); background: var(--moon); font-weight: 900; }
.reset { justify-self: start; border: 0; padding: 0; color: var(--muted); background: transparent; font-size: .78rem; text-decoration: underline; cursor: pointer; }
.save-note { align-self: end; margin: 0; color: #71849b; font-size: .72rem; line-height: 1.5; }

@media (max-width: 760px) {
  main { grid-template-columns: 1fr; padding-top: 2.5rem; }
  .intro { position: static; }
  .intro br { display: none; }
  .help { grid-column: 1; }
}

@media (max-width: 520px) {
  .site-header p { display: none; }
  .scoreboard p { padding: .8rem .65rem; }
  .scoreboard strong { font-size: .8rem; }
  .scoreboard b { font-size: 1.1rem; }
  .burapi { right: 22%; bottom: 31%; }
  .burapi p { max-width: 145px; }
  .help { grid-template-columns: 1fr; }
  .reset { margin-top: .3rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.share-x {
  display: block;
  width: 100%;
  min-height: 48px;
  margin: .6rem 0 0;
  border: 0;
  border-radius: 999px;
  background: #24324c;
  color: #fff4ea;
  font-weight: 800;
  cursor: pointer;
}
.share-x[hidden] { display: none !important; }