/*
 * KOHARU GAMES — refined visual layer
 *
 * This stylesheet intentionally changes presentation only. Game state,
 * controls, scoring, timing and canvas logic remain in each original page.
 */

:root {
  --koharu-midnight: #080b24;
  --koharu-indigo: #11163f;
  --koharu-indigo-2: #1a2057;
  --koharu-cream: #fff7e9;
  --koharu-coral: #ff6f91;
  --koharu-orange: #ffad6d;
  --koharu-gold: #ffd76b;
  --koharu-cyan: #56d6e0;
  --koharu-violet: #8b6bff;
  --game-accent: var(--koharu-gold);
  --game-accent-2: var(--koharu-coral);
  --game-accent-rgb: 255, 215, 107;
  --game-glow-rgb: 255, 111, 145;
  --surface: rgba(20, 25, 67, 0.78);
  --surface-strong: rgba(25, 31, 80, 0.94);
  --hairline: rgba(255, 247, 233, 0.13);
  --hairline-strong: rgba(255, 247, 233, 0.24);
  --lift-shadow: 0 24px 70px rgba(2, 3, 18, 0.46);
  --soft-shadow: 0 12px 36px rgba(2, 3, 18, 0.28);
  --radius-lg: 24px;
  --radius-md: 16px;
}

body[data-game="puzzle"] {
  --game-accent: #ffd76b;
  --game-accent-2: #ff8fb1;
  --game-accent-rgb: 255, 215, 107;
  --game-glow-rgb: 255, 143, 177;
}

body[data-game="rhythm"] {
  --game-accent: #b7a7f0;
  --game-accent-2: #ff8fb1;
  --game-accent-rgb: 183, 167, 240;
  --game-glow-rgb: 255, 143, 177;
}

body[data-game="breakout"] {
  --game-accent: #b7a7f0;
  --game-accent-2: #56d6e0;
  --game-accent-rgb: 183, 167, 240;
  --game-glow-rgb: 86, 214, 224;
}

body[data-game="challenge"] {
  --game-accent: #5fd7e2;
  --game-accent-2: #ffd76b;
  --game-accent-rgb: 95, 215, 226;
  --game-glow-rgb: 255, 215, 107;
}

html {
  background: var(--koharu-midnight);
}

body {
  color: var(--koharu-cream);
  background:
    radial-gradient(circle at 50% -10%, rgba(var(--game-glow-rgb), 0.2), transparent 34rem),
    radial-gradient(circle at 110% 72%, rgba(var(--game-accent-rgb), 0.13), transparent 32rem),
    linear-gradient(155deg, var(--koharu-indigo) 0%, var(--koharu-midnight) 54%, #0c0f2e 100%);
  isolation: isolate;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

body::before {
  opacity: 0.36;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 72%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 72%, transparent);
}

body::after {
  opacity: 0.075;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.75'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

body[data-game] .app {
  position: relative;
  width: min(100%, 680px);
  max-width: 680px;
  min-height: 100svh;
  padding-inline: clamp(16px, 4vw, 28px);
}

body[data-game] .app::before {
  content: "KOHARU / GAMES";
  display: block;
  padding-top: calc(16px + env(safe-area-inset-top));
  color: rgba(255, 247, 233, 0.42);
  font-family: var(--disp, "Jost", sans-serif);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-align: center;
}

body[data-game]:has(#scr-play.on) .app::before,
body[data-game]:has(#scr-game.on) .app::before {
  display: none;
}

/* Brand mastheads */
body[data-game] .hero,
body[data-game] .home-hero {
  position: relative;
  padding-top: clamp(24px, 6vh, 54px);
}

body[data-game] .hero::before,
body[data-game] .home-hero::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 50%;
  width: min(420px, 92vw);
  aspect-ratio: 1.9;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--game-accent-rgb), 0.14), transparent 67%);
  filter: blur(10px);
  pointer-events: none;
}

body[data-game] .hero .mark,
body[data-game] .home-mark {
  width: clamp(92px, 22vw, 124px);
  height: clamp(92px, 22vw, 124px);
  margin-bottom: 18px;
}

body[data-game] .hero .mark img,
body[data-game] .home-mark img {
  filter:
    drop-shadow(0 0 18px rgba(var(--game-accent-rgb), 0.32))
    drop-shadow(0 12px 22px rgba(0, 0, 0, 0.28));
}

body[data-game] .wordmark {
  color: rgba(255, 247, 233, 0.58);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.46em;
}

body[data-game] .title,
body[data-game] .game-title {
  margin-top: 6px;
  font-size: clamp(29px, 8vw, 43px);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.08;
  text-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

body[data-game] .title .thin,
body[data-game] .game-title .thin {
  color: var(--game-accent);
  text-shadow: 0 0 22px rgba(var(--game-accent-rgb), 0.36);
}

body[data-game] .tagline {
  color: rgba(255, 247, 233, 0.5);
  letter-spacing: 0.15em;
}

/* Primary surfaces */
body[data-game] .song-card,
body[data-game] .set-btn,
body[data-game] .stat,
body[data-game] .ctl,
body[data-game] .kpi,
body[data-game] .size-card,
body[data-game] .mini-demo,
body[data-game] .stage-info {
  border: 1px solid var(--hairline);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.055), transparent 48%),
    var(--surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), var(--soft-shadow);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

body[data-game] .song-card {
  position: relative;
  margin-top: 28px;
  padding: clamp(22px, 5vw, 32px);
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07), var(--lift-shadow);
}

body[data-game] .song-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 26px;
  right: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--game-accent), transparent);
  opacity: 0.8;
}

body[data-game] .song-card .lab {
  color: rgba(255, 247, 233, 0.44);
  font-weight: 500;
  letter-spacing: 0.3em;
}

body[data-game] .song-card .song {
  color: var(--game-accent);
  font-size: clamp(44px, 12vw, 58px);
  text-shadow: 0 0 28px rgba(var(--game-accent-rgb), 0.24);
}

body[data-game] .mission {
  color: rgba(255, 247, 233, 0.66);
}

body[data-game] .mission b {
  color: var(--koharu-cream);
}

/* Buttons and interactive controls */
body[data-game] button,
body[data-game] .set-btn,
body[data-game] .size-card {
  -webkit-tap-highlight-color: transparent;
}

body[data-game] .btn {
  min-height: 50px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.055);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.065);
  letter-spacing: 0.045em;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

body[data-game] .btn:hover {
  border-color: rgba(var(--game-accent-rgb), 0.55);
  background: rgba(255, 255, 255, 0.085);
}

body[data-game] .btn.gold {
  color: #171126;
  border-color: transparent;
  background: linear-gradient(118deg, var(--game-accent-2), var(--game-accent));
  box-shadow: 0 12px 30px rgba(var(--game-accent-rgb), 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.42);
}

body[data-game] .btn.gold:hover {
  filter: saturate(1.08) brightness(1.06);
  box-shadow: 0 14px 36px rgba(var(--game-accent-rgb), 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

body[data-game] .btn:active,
body[data-game] .set-btn:active,
body[data-game] .diff-btn:active,
body[data-game] .stage-chip:active,
body[data-game] .ctl:active,
body[data-game] .size-card:active {
  transform: translateY(1px) scale(0.985);
}

body[data-game] .btn.ghost {
  border-color: var(--hairline);
  color: rgba(255, 247, 233, 0.58);
  background: transparent;
}

body[data-game] :focus-visible {
  outline: 2px solid var(--game-accent);
  outline-offset: 3px;
}

/* Choice cards */
body[data-game] .diff-row,
body[data-game] .song-row {
  gap: 8px;
}

body[data-game] .diff-btn,
body[data-game] .song-chip,
body[data-game] .stage-chip,
body[data-game] .rule-chip {
  border-color: var(--hairline);
  background: rgba(8, 11, 36, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

body[data-game] .diff-btn:hover,
body[data-game] .song-chip:hover,
body[data-game] .stage-chip:hover,
body[data-game] .size-card:hover,
body[data-game] .set-btn:hover,
body[data-game] .ctl:hover {
  border-color: rgba(var(--game-accent-rgb), 0.5);
}

body[data-game] .diff-btn.sel,
body[data-game] .song-chip.sel,
body[data-game] .stage-chip.sel,
body[data-game] .set-btn.primary {
  border-color: rgba(var(--game-accent-rgb), 0.72);
  background:
    linear-gradient(145deg, rgba(var(--game-accent-rgb), 0.16), rgba(var(--game-accent-rgb), 0.045)),
    rgba(8, 11, 36, 0.72);
  box-shadow: 0 0 0 1px rgba(var(--game-accent-rgb), 0.08), 0 12px 28px rgba(0, 0, 0, 0.2);
}

body[data-game] .set-btn {
  padding: 16px 18px;
  border-radius: 18px;
}

body[data-game] .set-num,
body[data-game] .set-btn.primary .set-num,
body[data-game] .set-sub .script,
body[data-game] .badge-done,
body[data-game] .val.amber,
body[data-game] .score-row.total b,
body[data-game] .kpi .n,
body[data-game] .size-card .best,
body[data-game] .ctl .cnt {
  color: var(--game-accent);
}

body[data-game] .ctl .cnt {
  color: #171126;
  background: var(--game-accent);
  box-shadow: 0 4px 14px rgba(var(--game-accent-rgb), 0.28);
}

/* Game areas and HUD */
body[data-game] #scr-play {
  background:
    radial-gradient(circle at 50% 18%, rgba(var(--game-glow-rgb), 0.1), transparent 42%),
    linear-gradient(180deg, rgba(15, 20, 56, 0.24), rgba(8, 11, 36, 0.58));
}

body[data-game] #scr-play::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 100% 4px;
  mix-blend-mode: soft-light;
  opacity: 0.34;
}

body[data-game] .hud-top {
  padding: calc(12px + env(safe-area-inset-top)) 16px 10px;
  background: linear-gradient(to bottom, rgba(8, 11, 36, 0.82), transparent);
}

body[data-game] .hud-top .score,
body[data-game] .hud-top .songname {
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.55);
}

body[data-game] .hud-btn,
body[data-game] .icon-btn {
  border-color: var(--hairline-strong);
  background: rgba(18, 23, 61, 0.72);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07), 0 8px 20px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

body[data-game] .progress {
  height: 4px;
  background: linear-gradient(90deg, var(--game-accent-2), var(--game-accent));
  box-shadow: 0 0 14px rgba(var(--game-accent-rgb), 0.5);
}

/* Puzzle board polish */
body[data-game="puzzle"] .board {
  border-color: rgba(255, 247, 233, 0.22);
  box-shadow:
    0 26px 70px rgba(2, 3, 18, 0.48),
    0 0 0 1px rgba(var(--game-accent-rgb), 0.13),
    0 0 52px rgba(var(--game-accent-rgb), 0.08);
}

body[data-game="puzzle"] .bar {
  position: sticky;
  top: 0;
  z-index: 8;
  margin-inline: -8px;
  padding-inline: 8px;
  background: linear-gradient(to bottom, rgba(8, 11, 36, 0.94), rgba(8, 11, 36, 0.66) 72%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

body[data-game="puzzle"] .status {
  gap: 7px;
}

body[data-game="puzzle"] .stat,
body[data-game="puzzle"] .ctl,
body[data-game="puzzle"] .kpi,
body[data-game="puzzle"] .size-card {
  border-radius: var(--radius-md);
}

/* Dialogs, rewards and feedback */
body[data-game] .overlay {
  background: rgba(4, 5, 20, 0.76);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
}

body[data-game] .sheet {
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.06), transparent 46%),
    var(--surface-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 30px 90px rgba(1, 2, 14, 0.6);
}

body[data-game] .sheet h2 {
  letter-spacing: 0.16em;
}

body[data-game] .rank-big,
body[data-game] .script-big,
body[data-game] .newrec,
body[data-game] .clr-h {
  color: var(--game-accent);
  text-shadow: 0 0 24px rgba(var(--game-accent-rgb), 0.25);
}

body[data-game] .score-row,
body[data-game] .judge-rows,
body[data-game] .judge-rows .jr,
body[data-game] .toggle-row,
body[data-game] .vol-row {
  border-color: var(--hairline);
}

body[data-game] .toast {
  border-color: rgba(var(--game-accent-rgb), 0.34);
  background: rgba(20, 25, 67, 0.94);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

body[data-game] .name-input,
body[data-game] .pledge {
  border-color: var(--hairline-strong);
  background: rgba(8, 11, 36, 0.62);
}

body[data-game] .warn {
  border-color: rgba(255, 111, 145, 0.36);
  background: rgba(255, 111, 145, 0.075);
  color: #f2acbd;
}

body[data-game] .foot,
body[data-game] .home-foot {
  margin-bottom: 10px;
  color: rgba(255, 247, 233, 0.34);
}

@media (hover: hover) and (pointer: fine) {
  body[data-game] .btn:hover,
  body[data-game] .set-btn:hover,
  body[data-game] .diff-btn:hover,
  body[data-game] .stage-chip:hover,
  body[data-game] .ctl:hover,
  body[data-game] .size-card:hover {
    transform: translateY(-2px);
  }
}

@media (max-width: 420px) {
  body[data-game] .app::before {
    padding-top: calc(10px + env(safe-area-inset-top));
  }

  body[data-game] .hero,
  body[data-game] .home-hero {
    padding-top: 20px;
  }

  body[data-game] .song-card {
    padding: 20px 16px;
  }

  body[data-game] .diff-row {
    gap: 6px;
  }

  body[data-game] .diff-btn {
    padding-inline: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body[data-game] *,
  body[data-game] *::before,
  body[data-game] *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* =========================================================
   TOUR EDITION — premium arcade layer
   ========================================================= */

body[data-game] {
  min-height: 100svh;
  background-color: var(--koharu-midnight);
  background-image:
    linear-gradient(180deg, rgba(8, 11, 36, 0.06), rgba(8, 11, 36, 0.38) 54%, rgba(8, 11, 36, 0.76)),
    var(--scene-image),
    radial-gradient(circle at 50% -10%, rgba(var(--game-glow-rgb), 0.2), transparent 34rem);
  background-position: center top, center top, center top;
  background-repeat: no-repeat;
  background-size: cover, cover, cover;
  background-attachment: fixed;
}

body[data-game] .app {
  z-index: 1;
}

.koharu-fx {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 700ms ease;
}

body.fx-ready .koharu-fx {
  opacity: 0.92;
}

body[data-game]::before {
  opacity: 0.55;
  background-size: 54px 54px;
  transform-origin: center bottom;
}

body[data-game="puzzle"]::before {
  background-image:
    linear-gradient(rgba(255, 215, 107, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 215, 107, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(255, 143, 177, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 143, 177, 0.025) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px, 16px 16px, 16px 16px;
}

body[data-game="rhythm"]::before {
  background-image:
    repeating-linear-gradient(90deg, transparent 0 11.5%, rgba(183, 167, 240, 0.055) 11.5% 11.7%),
    linear-gradient(rgba(255, 143, 177, 0.035) 1px, transparent 1px);
  background-size: 100% 100%, 100% 42px;
  transform: perspective(440px) rotateX(58deg) scale(1.5);
}

body[data-game="breakout"]::before {
  background-image:
    linear-gradient(335deg, rgba(86, 214, 224, 0.055) 12%, transparent 12.5% 87%, rgba(86, 214, 224, 0.055) 87.5%),
    linear-gradient(155deg, rgba(183, 167, 240, 0.045) 12%, transparent 12.5% 87%, rgba(183, 167, 240, 0.045) 87.5%);
  background-size: 88px 44px;
}

body[data-game="challenge"]::before {
  background-image:
    radial-gradient(circle at center, transparent 0 18%, rgba(95, 215, 226, 0.055) 18.2% 18.45%, transparent 18.7% 32%, rgba(255, 215, 107, 0.045) 32.2% 32.4%, transparent 32.7%),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: min(92vw, 720px) min(92vw, 720px), 100% 5px;
  background-position: 50% 16%, 0 0;
  background-repeat: no-repeat, repeat;
}

body[data-game] .app::before {
  content: "KOHARU / GAMES  ·  NIGHT SESSION";
  position: relative;
  width: fit-content;
  margin-inline: auto;
  padding: calc(17px + env(safe-area-inset-top)) 18px 7px;
  color: rgba(255, 247, 233, 0.52);
  border-bottom: 1px solid rgba(var(--game-accent-rgb), 0.32);
  text-shadow: 0 0 16px rgba(var(--game-accent-rgb), 0.36);
}

body[data-game] .app::after {
  content: "";
  position: absolute;
  top: calc(32px + env(safe-area-inset-top));
  left: 50%;
  z-index: -1;
  width: min(560px, 94vw);
  height: 340px;
  transform: translateX(-50%);
  border: 1px solid rgba(var(--game-accent-rgb), 0.1);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(var(--game-accent-rgb), 0.1), transparent 62%),
    repeating-radial-gradient(circle, rgba(255, 247, 233, 0.055) 0 1px, transparent 1px 18px);
  opacity: 0.72;
  filter: drop-shadow(0 0 54px rgba(var(--game-accent-rgb), 0.14));
  pointer-events: none;
}

body[data-game]:has(#scr-play.on) .app::after,
body[data-game]:has(#scr-game.on) .app::after {
  opacity: 0.16;
}

body[data-game] .screen.on {
  animation: koharuReveal 560ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes koharuReveal {
  from { opacity: 0; transform: translateY(14px) scale(0.985); filter: blur(7px); }
  to { opacity: 1; transform: none; filter: none; }
}

body[data-game] .hero,
body[data-game] .home-hero {
  padding-bottom: 18px;
}

body[data-game] .hero .mark,
body[data-game] .home-mark {
  position: relative;
  animation: koharuMarkFloat 7s ease-in-out infinite;
}

body[data-game] .hero .mark::before,
body[data-game] .home-mark::before,
body[data-game] .hero .mark::after,
body[data-game] .home-mark::after {
  content: "";
  position: absolute;
  inset: -13px;
  border: 1px solid rgba(var(--game-accent-rgb), 0.2);
  border-radius: 50%;
  pointer-events: none;
}

body[data-game] .hero .mark::after,
body[data-game] .home-mark::after {
  inset: -25px;
  border-style: dashed;
  opacity: 0.34;
  animation: koharuOrbit 28s linear infinite reverse;
}

@keyframes koharuMarkFloat {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-7px) rotate(1deg); }
}

@keyframes koharuOrbit {
  to { transform: rotate(360deg); }
}

body[data-game] .title,
body[data-game] .game-title {
  position: relative;
  color: transparent;
  background: linear-gradient(105deg, #fffdf7 10%, var(--game-accent) 42%, #fffdf7 58%, var(--game-accent-2) 88%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 10px 26px rgba(0, 0, 0, 0.38));
  animation: koharuFoil 8s ease-in-out infinite;
}

body[data-game] .title .thin,
body[data-game] .game-title .thin {
  color: transparent;
  text-shadow: none;
}

@keyframes koharuFoil {
  0%, 24%, 100% { background-position: 100% center; }
  54%, 72% { background-position: 0 center; }
}

body[data-game] .wordmark::before,
body[data-game] .wordmark::after {
  content: "";
  display: inline-block;
  width: clamp(24px, 8vw, 54px);
  height: 1px;
  margin: 0 12px 3px;
  background: linear-gradient(90deg, transparent, rgba(var(--game-accent-rgb), 0.7));
}

body[data-game] .wordmark::after {
  transform: scaleX(-1);
}

body[data-game] .song-card {
  border-color: rgba(var(--game-accent-rgb), 0.22);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.085), transparent 32%),
    radial-gradient(circle at 86% 8%, rgba(var(--game-accent-rgb), 0.13), transparent 36%),
    linear-gradient(165deg, rgba(24, 30, 78, 0.95), rgba(8, 11, 36, 0.88));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 0 40px rgba(var(--game-accent-rgb), 0.035),
    0 28px 80px rgba(1, 2, 16, 0.52),
    0 0 0 1px rgba(var(--game-accent-rgb), 0.06);
}

body[data-game] .song-card::after {
  content: "";
  position: absolute;
  inset: -45% -80%;
  transform: rotate(19deg) translateX(-52%);
  background: linear-gradient(90deg, transparent 44%, rgba(255, 255, 255, 0.075) 49%, rgba(255, 255, 255, 0.22) 50%, rgba(255, 255, 255, 0.065) 52%, transparent 58%);
  pointer-events: none;
  animation: koharuCardSweep 10s ease-in-out infinite;
}

@keyframes koharuCardSweep {
  0%, 66%, 100% { transform: rotate(19deg) translateX(-52%); }
  82% { transform: rotate(19deg) translateX(52%); }
}

body[data-game] .song-card > * {
  position: relative;
  z-index: 1;
}

body[data-game] .btn.gold {
  position: relative;
  overflow: hidden;
  min-height: 56px;
  font-family: var(--disp, "Jost", sans-serif);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  box-shadow:
    0 14px 34px rgba(var(--game-accent-rgb), 0.24),
    0 0 0 1px rgba(255, 255, 255, 0.2) inset,
    0 -8px 24px rgba(0, 0, 0, 0.12) inset;
}

body[data-game] .btn.gold::before {
  content: "";
  position: absolute;
  top: -50%;
  bottom: -50%;
  left: -38%;
  width: 26%;
  transform: rotate(18deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.65), transparent);
  animation: koharuButtonSweep 4.8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes koharuButtonSweep {
  0%, 58%, 100% { left: -38%; }
  76% { left: 112%; }
}

body[data-game] .set-btn,
body[data-game] .diff-btn,
body[data-game] .song-chip,
body[data-game] .stage-chip,
body[data-game] .ctl,
body[data-game] .size-card {
  position: relative;
  overflow: hidden;
}

body[data-game] .set-btn::after,
body[data-game] .diff-btn::after,
body[data-game] .song-chip::after,
body[data-game] .stage-chip::after,
body[data-game] .ctl::after,
body[data-game] .size-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--game-accent-2), var(--game-accent));
  transition: transform 220ms ease;
}

body[data-game] .set-btn:hover::after,
body[data-game] .diff-btn:hover::after,
body[data-game] .song-chip:hover::after,
body[data-game] .stage-chip:hover::after,
body[data-game] .ctl:hover::after,
body[data-game] .size-card:hover::after,
body[data-game] .diff-btn.sel::after,
body[data-game] .song-chip.sel::after,
body[data-game] .stage-chip.sel::after,
body[data-game] .set-btn.primary::after {
  transform: scaleX(1);
}

body[data-game] .hud-top {
  left: 12px;
  right: 12px;
  top: calc(8px + env(safe-area-inset-top));
  padding: 9px 11px;
  border: 1px solid rgba(255, 247, 233, 0.1);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(25, 31, 80, 0.78), rgba(8, 11, 36, 0.58));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.075), 0 14px 36px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
}

body[data-game] .hud-top .score {
  background: linear-gradient(90deg, #fff, var(--game-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

body[data-game] .sheet {
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  max-height: min(86vh, calc(100dvh - 40px));
}

body[data-game] .sheet::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--game-accent-2), var(--game-accent), transparent);
  box-shadow: 0 0 22px rgba(var(--game-accent-rgb), 0.48);
}

body[data-game] .sheet::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  top: -140px;
  right: -100px;
  border: 1px solid rgba(var(--game-accent-rgb), 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 24px rgba(var(--game-accent-rgb), 0.025), 0 0 0 52px rgba(var(--game-accent-rgb), 0.018);
  pointer-events: none;
}

body[data-game="puzzle"] .board-wrap::before {
  content: "";
  position: absolute;
  inset: -18px 0;
  z-index: -1;
  border-radius: 28px;
  background: radial-gradient(ellipse, rgba(255, 215, 107, 0.12), transparent 68%);
  filter: blur(10px);
  pointer-events: none;
}

body[data-game="puzzle"] .board {
  border-width: 2px;
  border-color: rgba(255, 247, 233, 0.72);
  border-radius: 14px;
  background: rgba(8, 11, 36, 0.76);
  box-shadow:
    0 30px 80px rgba(2, 3, 18, 0.58),
    0 0 0 4px rgba(255, 247, 233, 0.08),
    0 0 48px rgba(var(--game-accent-rgb), 0.16);
}

body[data-game="puzzle"] .cell {
  background: var(--cell-color);
  box-shadow: inset 0 0 0 1px rgba(255, 247, 233, 0.3);
  transition: filter 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

body[data-game="puzzle"] .cell::before {
  content: none;
}

body[data-game="puzzle"] .cell::after {
  z-index: 2;
  border-top-color: rgba(255, 247, 233, 0.24);
  border-left-color: rgba(255, 247, 233, 0.24);
}

body[data-game="puzzle"] .cell.bt::after {
  border-top: 2.5px solid rgba(255, 247, 233, 0.82);
}

body[data-game="puzzle"] .cell.bl::after {
  border-left: 2.5px solid rgba(255, 247, 233, 0.82);
}

body[data-game="puzzle"] .cell .x::before,
body[data-game="puzzle"] .cell .x::after {
  height: clamp(3px, 0.7vw, 5px);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 2px rgba(8, 11, 36, 0.45);
}

body[data-game="puzzle"] .cell .emblem {
  width: 76%;
  height: 76%;
  z-index: 3;
  border-radius: 50%;
  padding: 7%;
  background: rgba(8, 11, 36, 0.9);
  box-shadow:
    0 4px 10px rgba(2, 3, 18, 0.42),
    0 0 0 1.5px rgba(255, 247, 233, 0.84),
    0 0 14px rgba(255, 247, 233, 0.24);
  object-fit: contain;
}

body[data-game="puzzle"] .cell:hover {
  z-index: 1;
  filter: brightness(1.1) saturate(1.04);
}

body[data-game="puzzle"] .cell.placed-flash {
  z-index: 4;
  animation: koharuCellPlace 520ms cubic-bezier(0.16, 1, 0.3, 1);
}

body[data-game="puzzle"] .cell.placed-flash::before {
  content: "";
  position: absolute;
  inset: -30%;
  height: auto;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.95), rgba(var(--game-accent-rgb), 0.55) 22%, transparent 64%);
  opacity: 0;
  animation: koharuCellBurst 620ms ease-out;
}

.cell-pop {
  position: absolute;
  left: 50%;
  top: 42%;
  z-index: 8;
  transform: translate(-50%, -50%);
  color: #fffdf7;
  font-family: var(--disp, "Jost", sans-serif);
  font-size: clamp(10px, 2.8vw, 18px);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-shadow: 0 2px 0 rgba(8, 11, 36, 0.75), 0 0 12px rgba(var(--game-accent-rgb), 0.95);
  pointer-events: none;
  animation: koharuCellPop 780ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes koharuCellPlace {
  0% { transform: scale(0.84); filter: brightness(1.8); }
  54% { transform: scale(1.08); filter: brightness(1.24); }
  100% { transform: scale(1); filter: none; }
}

@keyframes koharuCellBurst {
  0% { opacity: 0.9; transform: scale(0.25); }
  100% { opacity: 0; transform: scale(1.45); }
}

@keyframes koharuCellPop {
  0% { opacity: 0; transform: translate(-50%, -20%) scale(0.55); }
  22% { opacity: 1; transform: translate(-50%, -76%) scale(1.08); }
  72% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -155%) scale(0.9); }
}

.fx-ripple {
  position: fixed;
  z-index: 90;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border: 1px solid rgba(var(--game-accent-rgb), 0.72);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(var(--game-accent-rgb), 0.42);
  pointer-events: none;
  animation: koharuRipple 620ms ease-out forwards;
}

@keyframes koharuRipple {
  to { opacity: 0; transform: scale(8); }
}

@media (max-width: 420px) {
  body[data-game] .app::before {
    padding-top: calc(11px + env(safe-area-inset-top));
    font-size: 8px;
    letter-spacing: 0.24em;
  }

  body[data-game] .app::after {
    top: calc(24px + env(safe-area-inset-top));
    height: 270px;
  }

  body[data-game] .wordmark::before,
  body[data-game] .wordmark::after {
    width: 18px;
    margin-inline: 8px;
  }

  body[data-game] .hud-top {
    left: 8px;
    right: 8px;
    border-radius: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .koharu-fx { display: none; }
  body[data-game] .hero .mark,
  body[data-game] .home-mark,
  body[data-game] .hero .mark::after,
  body[data-game] .home-mark::after,
  body[data-game] .title,
  body[data-game] .game-title,
  body[data-game] .song-card::after,
  body[data-game] .btn.gold::before {
    animation: none !important;
  }
}

/* =========================================================
   監査パッチ(Claude) — 2026/09/19
   ========================================================= */

/* 1) ヒント等のカウントバッジ(.ctl .cnt)はボタン右上の外側に張り出す設計のため、
      overflow:hidden で見切れないようにする(下線演出はボタン内側なので影響なし) */
body[data-game] .ctl {
  overflow: visible;
}
body[data-game] .ctl .cnt {
  z-index: 3;
}

/* 2) iOS Safariは background-attachment: fixed を正しく扱えず
      シーン背景が拡大・欠落することがあるため、タッチ端末ではscrollへフォールバック */
@supports (-webkit-touch-callout: none) {
  body[data-game] {
    background-attachment: scroll, scroll, scroll;
  }
}

/* 3) リズム: 曲選択のスクリプト書体タイトルが大きすぎて周囲に干渉するため縮小 */
body[data-game="rhythm"] .song-card .song {
  font-size: clamp(28px, 8vw, 38px);
  line-height: 1.25;
  margin: 6px 0 4px;
  overflow-wrap: anywhere;
}

/* Result sheets: one-row sticky actions so the ranking form stays in the first view */
body[data-game] .sheet-actions.row {
  gap: 6px;
  margin-top: 12px;
  padding: 8px 22px calc(14px + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(24, 30, 76, 0), rgb(24, 30, 76) 12px);
}

body[data-game] .sheet-actions .act-row {
  display: flex;
  gap: 8px;
}

body[data-game] .sheet-actions .act-row .btn {
  flex: 1 1 0;
  min-width: 0;
  margin: 0;
  min-height: 48px;
  padding: 8px 10px;
  font-size: 14px;
  line-height: 1.25;
  white-space: normal;
}

body[data-game] .sheet-actions .act-row .btn.gold {
  flex: 1.4 1 0;
  min-height: 48px;
  letter-spacing: 0.06em;
}

body[data-game] .sheet-actions .act-link {
  display: block;
  width: 100%;
  margin: 0;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid rgba(var(--game-accent-rgb), 0.38);
  border-radius: 999px;
  background: rgba(var(--game-accent-rgb), 0.08);
  color: var(--game-accent);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}

body[data-game] .sheet-actions .act-link:active {
  transform: translateY(1px) scale(0.985);
}

body[data-game] .judge-grid,
body[data-game] .judge-grid .jc + .jc {
  border-color: var(--hairline);
}