:root {
  color-scheme: dark;
  --bg: #0A0A0F;
  --bg-alt: #0E0E14;
  --surface: #12121A;
  --surface-raised: #1A1A24;
  --line: rgba(255, 255, 255, .07);
  --text: #F5F5F7;
  --muted: #8E8E93;
  --accent: #D4A574;
  --accent-bright: #E8C9A0;
  --accent2: #8B9D83;
  --spark: #b7f9d0;
  --red: #ff777e;
  --gold: #ffd079;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; }
html { overscroll-behavior: none; }
body {
  display: grid;
  place-items: center;
  overflow: hidden;
  overscroll-behavior: none;
  background: radial-gradient(ellipse 50% 65% at 50% 50%, #13131A 0%, #0C0C11 58%, #08080C 100%);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 60px 60px;
}
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 60;
  opacity: .025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
[hidden] { display: none !important; }

.app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: min(100%, 540px);
  height: 100vh;
  height: 100dvh;
  max-height: 920px;
  background: var(--bg);
  overflow: hidden;
}
.topbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: none;
  min-height: 58px;
  padding: 7px 16px;
  padding-top: max(7px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--line);
}
.back-link, .brand { display: inline-flex; align-items: center; text-decoration: none; }
.back-link { gap: 3px; min-width: 94px; min-height: 40px; color: var(--muted); font-size: .84rem; font-weight: 600; }
.back-link:hover { color: var(--text); }
.back-link .back-short { display: none; }
.back-link svg { width: 20px; height: 20px; }
.brand { position: absolute; left: 50%; transform: translateX(-50%); color: var(--text); font-size: .9rem; font-weight: 800; letter-spacing: .18em; }
.brand span { margin-left: 5px; color: var(--accent); font-size: 1.25rem; line-height: 0; }
.icon-button {
  display: grid;
  place-items: center;
  flex: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,.025);
  color: var(--muted);
}
.icon-button:hover:not(:disabled) { border-color: rgba(212,165,116,.4); color: var(--accent); }
.icon-button:disabled { opacity: .42; cursor: default; }
.icon-button svg { width: 21px; height: 21px; }
.sound-button .sound-waves { display: none; }
.sound-button.is-on { color: var(--accent); }
.sound-button.is-on .sound-waves { display: block; }
.sound-button.is-on .sound-slash { display: none; }

.game { position: relative; display: flex; flex: 1; flex-direction: column; min-height: 0; padding: 0 14px; }
.title-row { display: flex; align-items: flex-end; justify-content: space-between; flex: none; gap: 10px; padding: 13px 3px 11px; }
.eyebrow, .panel-kicker { margin: 0; color: var(--accent); font-size: .61rem; font-weight: 800; letter-spacing: .2em; }
h1, h2, p { margin-top: 0; }
h1 { margin: 3px 0 0; font-size: clamp(1.55rem, 5.8vw, 2.15rem); font-weight: 900; letter-spacing: .045em; line-height: 1; }
h1 span, .accent-dot { color: var(--accent); }
.best-badge { display: flex; align-items: flex-end; flex-direction: column; gap: 2px; min-width: 110px; padding-bottom: 2px; }
.best-badge span { color: var(--muted); font-size: .55rem; font-weight: 750; letter-spacing: .1em; white-space: nowrap; }
.best-badge strong { color: var(--accent); font-size: 1.13rem; font-variant-numeric: tabular-nums; line-height: 1; }

.scorebar {
  display: grid;
  grid-template-columns: minmax(0,1.1fr) minmax(0,.85fr) minmax(0,1fr) 40px;
  align-items: center;
  flex: none;
  gap: 0;
  min-height: 68px;
  margin-bottom: 10px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(130deg, rgba(26,26,35,.95), rgba(16,16,22,.9));
}
.stat { display: flex; flex-direction: column; justify-content: center; min-width: 0; min-height: 43px; padding: 0 10px; border-right: 1px solid var(--line); }
.stat:first-child { padding-left: 5px; }
.time-stat { border-right: 0; }
.stat span { color: var(--muted); font-size: .59rem; font-weight: 800; letter-spacing: .17em; }
.stat strong { margin-top: 2px; font-size: 1.55rem; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -.035em; line-height: 1; }
.combo-stat strong { color: var(--accent); }
.time-stat strong { color: var(--accent); }
.time-stat.is-urgent strong { color: var(--red); animation: timer-pulse .8s ease-in-out infinite alternate; }
.pause-button { width: 36px; height: 36px; border-radius: 10px; }
.pause-button svg { width: 18px; height: 18px; }

.field {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid rgba(139, 157, 131, .3);
  border-radius: 18px;
  background:
    radial-gradient(ellipse at 49% 42%, rgba(48, 62, 48, .26), transparent 68%),
    linear-gradient(rgba(139, 157, 131, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 157, 131, .055) 1px, transparent 1px),
    #0E0E14;
  background-size: auto, 38px 38px, 38px 38px, auto;
}
.field::after { content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none; box-shadow: inset 0 0 55px rgba(2, 4, 8, .56); border-radius: inherit; }
.field.is-danger { border-color: rgba(255,119,126,.8); }
#game-canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; touch-action: none; cursor: crosshair; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.field-caption { position: absolute; top: 14px; left: 17px; right: 17px; z-index: 3; display: flex; justify-content: space-between; color: rgba(199,199,204,.42); font-size: .62rem; font-weight: 800; letter-spacing: .2em; pointer-events: none; }
.stage-dots { display: flex; align-items: center; gap: 7px; }
.stage-dots i { width: 6px; height: 6px; border-radius: 50%; background: rgba(199,199,204,.32); }
.stage-dots i.active { background: var(--spark); box-shadow: 0 0 9px rgba(183,249,208,.7); }
.field-corner { position: absolute; width: 16px; height: 16px; z-index: 3; pointer-events: none; opacity: .75; }
.corner-tl { top: 9px; left: 9px; border-top: 1px solid var(--spark); border-left: 1px solid var(--spark); }
.corner-tr { top: 9px; right: 9px; border-top: 1px solid var(--spark); border-right: 1px solid var(--spark); }
.corner-bl { bottom: 9px; left: 9px; border-bottom: 1px solid var(--spark); border-left: 1px solid var(--spark); }
.corner-br { bottom: 9px; right: 9px; border-bottom: 1px solid var(--spark); border-right: 1px solid var(--spark); }
.toast {
  position: absolute;
  top: 48px;
  left: 50%;
  z-index: 4;
  max-width: calc(100% - 30px);
  padding: 8px 13px;
  transform: translate(-50%, -8px);
  border: 1px solid rgba(212,165,116,.3);
  border-radius: 100px;
  background: rgba(18,18,26,.94);
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  color: var(--accent-bright);
  font-size: .78rem;
  font-weight: 750;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s, transform .18s;
}
.toast.visible { transform: translate(-50%, 0); opacity: 1; }
.toast.bad { border-color: rgba(255,119,126,.45); color: #ffb4b6; }

.game-footer { flex: none; padding: 10px 3px max(12px, env(safe-area-inset-bottom)); }
.gesture-tip { display: flex; align-items: center; gap: 9px; color: var(--text); font-size: .81rem; font-weight: 600; }
.gesture-tip svg { flex: none; width: 25px; height: 25px; color: var(--accent); }
.ink-row { display: flex; align-items: center; gap: 12px; margin-top: 6px; color: var(--muted); font-size: .55rem; font-weight: 800; letter-spacing: .16em; }
.ink-track { flex: 1; height: 4px; overflow: hidden; border-radius: 6px; background: var(--surface-raised); }
#ink-fill { width: 100%; height: 100%; transform-origin: left; background: linear-gradient(90deg, #66d8b1, #d8ffe7); box-shadow: 0 0 9px #9ef0c6; }
#ink-fill.is-low { background: linear-gradient(90deg, #ffaf83, #ffd079); }
.legend { display: flex; justify-content: space-between; gap: 7px; margin-top: 9px; padding-top: 9px; border-top: 1px solid var(--line); color: var(--muted); font-size: .65rem; font-weight: 650; white-space: nowrap; }
.legend > span, .rule-list > span { display: inline-flex; align-items: center; gap: 6px; }
.legend-mark { display: inline-block; flex: none; width: 9px; height: 9px; background: var(--spark); box-shadow: 0 0 9px rgba(164,255,197,.55); border-radius: 50%; }
.legend-mark.hazard { width: 9px; height: 9px; background: var(--red); border-radius: 2px; transform: rotate(45deg); box-shadow: 0 0 9px rgba(255,119,126,.45); }
.legend-mark.bonus { width: 9px; height: 9px; background: var(--gold); border-radius: 2px; transform: rotate(45deg); box-shadow: 0 0 9px rgba(255,208,121,.5); }

.overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 14px 20px;
  background: rgba(6, 6, 10, .73);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.panel {
  width: min(100%, 385px);
  max-height: 100%;
  overflow-y: auto;
  padding: 23px 24px 20px;
  border: 1px solid rgba(212,165,116,.26);
  border-radius: 22px;
  background: linear-gradient(145deg, #17171E, #111116 56%, #0F0F14);
  box-shadow: 0 25px 70px rgba(0,0,0,.48), inset 0 1px rgba(255,255,255,.04);
  text-align: center;
  scrollbar-width: thin;
}
.intro-art { display: grid; place-items: center; width: 88px; height: 88px; margin: 0 auto 12px; border-radius: 50%; background: radial-gradient(circle, rgba(139,157,131,.22), transparent 70%); }
.intro-art svg { width: 88px; height: 88px; filter: drop-shadow(0 0 10px rgba(116,248,170,.28)); }
.panel-kicker { margin-bottom: 10px; }
.panel h2 { margin: 0; font-size: clamp(1.65rem, 7vw, 2.1rem); font-weight: 850; letter-spacing: -.035em; line-height: 1.14; }
.panel h2 em { color: var(--accent); font-style: normal; }
.panel-copy { margin: 13px 0 0; color: #C7C7CC; font-size: .86rem; line-height: 1.52; }
.rule-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 7px; margin: 17px 0 19px; }
.rule-list > span { padding: 7px 9px; border: 1px solid var(--line); border-radius: 7px; background: rgba(255,255,255,.03); color: #C7C7CC; font-size: .7rem; font-weight: 650; }
.primary-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 51px;
  padding: 0 17px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: #14100B;
  font-size: .92rem;
  font-weight: 850;
  box-shadow: 0 9px 25px rgba(212,165,116,.18);
  transition: transform .14s, background .14s;
}
.primary-button:hover { background: var(--accent-bright); }
.primary-button:active { transform: scale(.98); }
.primary-button span { font-size: 1.2rem; font-weight: 500; }
.panel-footnote { margin: 13px 0 0; color: var(--muted); font-size: .69rem; }
.pause-panel, .result-panel { padding-top: 28px; padding-bottom: 25px; }
.pause-panel .panel-copy { margin-bottom: 27px; }
.text-button { min-height: 42px; margin-top: 10px; padding: 8px 14px; border: 0; background: none; color: var(--muted); font-size: .78rem; font-weight: 700; }
.text-button:hover { color: var(--text); }
.result-caption { margin: 23px 0 1px; color: var(--muted); font-size: .62rem; font-weight: 800; letter-spacing: .2em; }
.result-score { color: var(--accent-bright); font-size: clamp(3.25rem, 16vw, 4.8rem); font-weight: 900; font-variant-numeric: tabular-nums; letter-spacing: -.06em; line-height: 1.06; text-shadow: 0 0 30px rgba(212,165,116,.3); }
.result-panel .panel-copy { margin-top: 10px; }
.result-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 20px 0; text-align: left; }
.result-stats > div { display: flex; flex-direction: column; gap: 5px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.03); }
.result-stats span { color: var(--muted); font-size: .58rem; font-weight: 750; letter-spacing: .1em; }
.result-stats strong { font-size: 1.08rem; font-variant-numeric: tabular-nums; }

@keyframes timer-pulse { to { opacity: .55; } }
@media (min-width: 700px) {
  .app { height: min(900px, calc(100dvh - 32px)); border: 1px solid rgba(255,255,255,.09); border-radius: 23px; box-shadow: 0 34px 90px rgba(0,0,0,.5); }
}
@media (max-width: 370px) {
  .game { padding: 0 10px; }
  .topbar { padding-right: 12px; padding-left: 12px; }
  .back-link { min-width: 70px; }
  .back-link .back-full { display: none; }
  .back-link .back-short { display: inline; }
  .stat { padding-right: 6px; padding-left: 7px; }
  .stat strong { font-size: 1.36rem; }
  .legend { font-size: .6rem; gap: 3px; }
  .panel { padding-right: 17px; padding-left: 17px; }
}
@media (max-height: 680px) {
  .topbar { min-height: 49px; padding-bottom: 3px; }
  .title-row { padding-top: 8px; padding-bottom: 7px; }
  .scorebar { min-height: 60px; margin-bottom: 7px; }
  .stat { min-height: 40px; }
  .game-footer { padding-top: 7px; }
  .intro-art { width: 60px; height: 60px; margin-bottom: 5px; }
  .intro-art svg { width: 60px; height: 60px; }
  .panel { padding-top: 15px; padding-bottom: 15px; }
  .rule-list { margin-top: 11px; margin-bottom: 13px; }
}
@media (max-height: 540px) {
  .intro-art { display: none; }
  .panel-copy { margin-top: 8px; }
  .rule-list { margin: 9px 0; }
  .panel-footnote { margin-top: 7px; }
  .game-footer { padding-bottom: max(6px, env(safe-area-inset-bottom)); }
  .legend { margin-top: 5px; padding-top: 5px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}