:root {
  color-scheme: dark;
  --night: #04090c;
  --deep: #061015;
  --water: #0b2730;
  --water-light: #3b6f73;
  --bone: #eee7d7;
  --muted: #9ca9a5;
  --moon: #dbe8d0;
  --reed: #7f9d78;
  --gold: #d8b36d;
  --ember: #bc6f50;
  --line: rgba(219,232,208,.16);
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--night); }
body {
  margin: 0;
  min-height: 100svh;
  color: var(--bone);
  background:
    radial-gradient(circle at 50% 4%, rgba(74,118,121,.18), transparent 34rem),
    linear-gradient(#061015, #030708 72%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.river-shell { width: min(calc(100% - 32px), 1160px); margin: 0 auto; padding: 26px 0 64px; }
.game-header { min-height: 82px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 22px; }
.back-link, .sound-button {
  color: var(--muted);
  font-size: .68rem;
  letter-spacing: .17em;
  text-transform: uppercase;
}
.back-link { justify-self: start; text-underline-offset: 6px; }
.sound-button { justify-self: end; padding: 10px 0; border: 0; background: none; cursor: pointer; }
.sound-button:hover, .back-link:hover { color: var(--moon); }
.title-lockup { text-align: center; }
.title-lockup span { color: var(--water-light); font-size: .62rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.title-lockup h1 { margin: 5px 0 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.75rem, 4vw, 3rem); font-weight: 400; line-height: .95; }

.game-stage { position: relative; }
.river-frame {
  position: relative;
  padding: clamp(12px, 2vw, 22px);
  border: 1px solid rgba(219,232,208,.18);
  background:
    linear-gradient(90deg, rgba(219,232,208,.025), transparent 15% 85%, rgba(219,232,208,.025)),
    #071014;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.56);
}
.river-frame::before, .river-frame::after {
  position: absolute;
  top: 50%;
  width: 34px;
  height: 70%;
  border-block: 1px solid rgba(219,232,208,.16);
  content: "";
  transform: translateY(-50%);
}
.river-frame::before { left: -1px; border-right: 1px solid rgba(219,232,208,.12); }
.river-frame::after { right: -1px; border-left: 1px solid rgba(219,232,208,.12); }
.canvas-wrap { position: relative; overflow: hidden; border: 1px solid rgba(219,232,208,.12); background: #061015; }
canvas { width: 100%; height: auto; display: block; touch-action: none; }
.water-glass {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .35;
  background: repeating-linear-gradient(to bottom, rgba(238,231,215,.018) 0 1px, transparent 2px 5px);
  mix-blend-mode: screen;
}
.moon-mark {
  position: absolute;
  top: -18px;
  left: 50%;
  z-index: 3;
  width: 36px;
  aspect-ratio: 1;
  border: 1px solid rgba(219,232,208,.32);
  border-radius: 50%;
  background: #071014;
  transform: translateX(-50%);
}
.moon-mark::before, .moon-mark::after { position: absolute; inset: 8px; border: 1px solid rgba(219,232,208,.22); border-radius: 50%; content: ""; }
.moon-mark::after { inset: 13px; background: var(--moon); box-shadow: 0 0 14px rgba(219,232,208,.36); }

.game-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  padding: 28px;
  text-align: center;
  background: radial-gradient(circle at 50% 44%, rgba(13,42,49,.72), rgba(3,8,10,.94) 68%);
  opacity: 0;
  pointer-events: none;
  transition: opacity .24s ease;
}
.game-overlay.is-visible { opacity: 1; pointer-events: auto; }
.overlay-kicker { margin: 0 0 17px; color: var(--water-light); font-size: .64rem; font-weight: 700; letter-spacing: .22em; text-transform: uppercase; }
.game-overlay h2 { max-width: 720px; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.3rem, 7vw, 5.8rem); font-weight: 400; line-height: .9; }
.game-overlay > p:not(.overlay-kicker) { max-width: 510px; margin: 25px 0 0; color: var(--muted); font-family: Georgia, "Times New Roman", serif; font-size: clamp(.95rem, 2vw, 1.15rem); line-height: 1.65; }
.game-overlay button {
  min-width: 150px;
  margin-top: 30px;
  padding: 13px 28px;
  border: 1px solid rgba(219,232,208,.4);
  color: var(--moon);
  background: rgba(126,157,120,.08);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  cursor: pointer;
}
.game-overlay button:hover { border-color: var(--moon); background: rgba(126,157,120,.16); }
.game-overlay small { max-width: 500px; margin-top: 18px; color: rgba(238,231,215,.48); font-size: .64rem; letter-spacing: .08em; }

.touch-wheel { width: 210px; margin: 24px auto 0; display: none; grid-template-columns: repeat(3, 64px); grid-template-rows: repeat(3, 54px); place-content: center; gap: 4px; }
.touch-wheel button { border: 1px solid rgba(219,232,208,.2); color: var(--moon); background: rgba(11,39,48,.8); font-size: 1.25rem; touch-action: none; }
.touch-wheel button:active { background: rgba(59,111,115,.35); }
.touch-wheel [data-dir="up"] { grid-column: 2; grid-row: 1; }
.touch-wheel [data-dir="left"] { grid-column: 1; grid-row: 2; }
.touch-wheel .wheel-core { grid-column: 2; grid-row: 2; color: var(--gold); }
.touch-wheel [data-dir="right"] { grid-column: 3; grid-row: 2; }
.touch-wheel [data-dir="down"] { grid-column: 2; grid-row: 3; }

.game-notes { margin-top: 23px; display: flex; justify-content: center; flex-wrap: wrap; gap: 12px 32px; color: var(--muted); font-size: .67rem; letter-spacing: .09em; text-transform: uppercase; }
.game-notes p { margin: 0; }
.game-notes strong { color: var(--moon); font-weight: 700; }
.status-line { min-height: 1.4em; margin: 19px 0 0; color: rgba(238,231,215,.52); font-family: Georgia, "Times New Roman", serif; font-size: .9rem; text-align: center; }

@media (max-width: 720px) {
  .river-shell { width: min(calc(100% - 18px), 1160px); padding-top: 8px; }
  .game-header { min-height: 72px; grid-template-columns: 1fr auto; }
  .title-lockup { grid-column: 1 / -1; grid-row: 1; }
  .back-link, .sound-button { grid-row: 2; }
  .river-frame { padding: 8px; }
  .touch-wheel { display: grid; }
  .game-notes { gap: 9px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}