:root {
  --ink: #171719;
  --paper: #ffffff;
  --red: #b6212c;
  --red-bright: #e83a36;
  --gold: #f1c75b;
  --mint: #67d8c5;
  --night: #09080d;
  --line: rgba(255, 255, 255, 0.22);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.yoruaka-body {
  min-height: 100svh;
  font-family: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  letter-spacing: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.game-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 360px);
  min-height: 54px;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 900;
  letter-spacing: 0;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.game-button:hover,
.game-button:focus-visible {
  transform: translateY(-2px);
}

.game-button--primary {
  color: #171719;
  background: var(--gold);
  box-shadow: 0 8px 24px rgba(241, 199, 91, 0.24);
}

.game-button--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.66);
  background: rgba(8, 8, 12, 0.62);
}

.game-button--post {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.72);
  background: #111;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.game-button--play {
  color: #fff;
  background: var(--red);
  box-shadow: 0 8px 22px rgba(182, 33, 44, 0.24);
}

.game-button--light {
  color: #27272b;
  border-color: #c8c8cc;
  background: #fff;
}

/* Menu */
.landing-page {
  color: #fff;
  background: #050507;
}

.landing-screen {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: max(28px, env(safe-area-inset-top)) 22px max(24px, env(safe-area-inset-bottom));
  background-image: url("images/moon(title).png");
  background-position: center;
  background-size: cover;
}

.landing-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.12) 0%, rgba(0, 0, 0, 0.2) 42%, rgba(0, 0, 0, 0.88) 100%);
}

.landing-content,
.landing-actions {
  position: relative;
  z-index: 1;
}

.landing-content {
  width: min(100%, 760px);
  margin: 0 auto;
  text-align: center;
}

.landing-kicker,
.screen-kicker,
.result-kicker {
  margin: 8px 0 0;
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.device-note {
  margin: 8px auto 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.75rem;
}

.landing-actions {
  width: min(100%, 380px);
  display: grid;
  gap: 10px;
  margin: 36px auto 0;
}

/* Explanation */
.explanation-page {
  color: var(--ink);
  background: #fff;
}

.explanation-screen {
  width: min(100% - 32px, 760px);
  min-height: 100svh;
  margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) 0 max(28px, env(safe-area-inset-bottom));
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 22px;
  border-bottom: 2px solid #222226;
}

.circle-mark {
  width: 58px;
  height: 58px;
  object-fit: contain;
  flex: 0 0 auto;
}

.explanation-header h1 {
  margin: 4px 0 0;
  font-family: "Noto Serif JP", serif;
  font-size: 1.55rem;
  line-height: 1.5;
}

.explanation-header .screen-kicker {
  color: var(--red);
}

.explanation-visual {
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 82px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  margin: 22px auto 18px;
}

.moon-comparison {
  display: grid;
  justify-items: center;
  gap: 7px;
  margin: 0;
}

.moon-comparison figcaption {
  color: var(--red);
  font-size: 0.72rem;
  font-weight: 900;
}

.mini-moon-wrap {
  width: min(100%, 160px);
  aspect-ratio: 1;
  overflow: hidden;
  border: 3px solid #e8a6ad;
  border-radius: 50%;
  background: #3b1118;
  box-shadow: 0 8px 20px rgba(105, 22, 34, 0.2), 0 0 18px rgba(232, 58, 54, 0.2);
}

.mini-moon {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(2.25) contrast(0.82) saturate(1.35);
}

.mini-moon-wrap--after {
  border-color: #9edfd3;
  background: #e9f3f1;
  box-shadow: 0 8px 20px rgba(34, 119, 105, 0.18), 0 0 24px rgba(103, 216, 197, 0.38);
}

.mini-moon-wrap--after .mini-moon {
  filter: grayscale(1) brightness(3.45) contrast(0.66) sepia(0.06);
}

.moon-comparison:last-child figcaption {
  color: #238a79;
}

.comparison-action {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 2px;
}

.comparison-action span {
  color: var(--red);
  font-size: 2rem;
  font-weight: 900;
}

.mini-cleaner {
  width: 76px;
  transform: rotate(-8deg);
  filter: drop-shadow(0 8px 8px rgba(0, 0, 0, 0.16));
}

.rule-list {
  list-style: none;
  counter-reset: rules;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.rule-list li {
  counter-increment: rules;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid #e3e3e6;
  font-weight: 700;
  line-height: 1.7;
}

.rule-list li::before {
  content: counter(rules);
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #fff;
  background: var(--red);
  font-size: 0.85rem;
  font-weight: 900;
}

.explanation-actions {
  display: grid;
  gap: 10px;
  justify-items: center;
  margin-top: 28px;
}

/* Play */
.play-page {
  color: #fff;
  background: var(--night);
  overflow: hidden;
}

.play-screen {
  position: relative;
  width: min(100%, 720px);
  min-height: 100svh;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  overflow: hidden;
  background: linear-gradient(180deg, #0d0b12 0%, #17121a 55%, #101419 100%);
}

.play-header {
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: max(18px, env(safe-area-inset-top)) 18px 10px;
}

.play-header h1 {
  margin: 3px 0 0;
  font-family: "Noto Serif JP", serif;
  font-size: 1.25rem;
}

.close-game {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.54);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.28);
  font: 400 1.55rem/1 Arial, sans-serif;
}

.close-game span {
  display: block;
  line-height: 1;
  transform: translateY(3px);
}

.status-bar {
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 0 18px 8px;
}

.status-bar p {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
}

.status-bar span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.75rem;
  font-weight: 700;
}

.status-bar strong {
  color: var(--gold);
  font-size: 1.25rem;
}

.status-bar b {
  color: var(--mint);
}

.game-stage {
  position: relative;
  min-height: 0;
  overflow: hidden;
}

.stars,
.stars::before,
.stars::after {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.8) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(241, 199, 91, 0.7) 0 1px, transparent 1.5px);
  background-position: 10% 18%, 76% 38%;
  background-size: 120px 130px, 170px 160px;
  opacity: 0.34;
}

.stars::before {
  transform: translate(31px, 47px);
  opacity: 0.44;
}

.stars::after {
  transform: translate(-18px, 84px);
  opacity: 0.24;
}

.moon-wrap {
  position: relative;
  z-index: 1;
  width: min(72vw, 390px);
  aspect-ratio: 1;
  margin: 4px auto 0;
  overflow: hidden;
  border-radius: 50%;
  box-shadow: 0 0 34px rgba(210, 50, 57, 0.26), 0 0 90px rgba(232, 58, 54, 0.15);
}

.moon-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.moon-layer--clean {
  filter: grayscale(1) brightness(1.75) contrast(0.82) sepia(0.12);
}

.moon-dirt {
  transition: opacity 650ms ease, filter 650ms ease;
}

.moon-dirt--1 { clip-path: inset(0 80% 0 0); }
.moon-dirt--2 { clip-path: inset(0 60% 0 20%); }
.moon-dirt--3 { clip-path: inset(0 40% 0 40%); }
.moon-dirt--4 { clip-path: inset(0 20% 0 60%); }
.moon-dirt--5 { clip-path: inset(0 0 0 80%); }

.moon-dirt.is-clean {
  opacity: 0;
  filter: brightness(1.8);
}

.moon-gloss {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  box-shadow: inset 16px 12px 26px rgba(255, 255, 255, 0.07), inset -18px -20px 36px rgba(0, 0, 0, 0.32);
  pointer-events: none;
}

.moon-wrap.is-complete {
  animation: moonCelebrate 900ms ease both;
  box-shadow: 0 0 34px rgba(255, 255, 255, 0.4), 0 0 110px rgba(103, 216, 197, 0.42);
}

.game-feedback {
  position: relative;
  z-index: 2;
  min-height: 28px;
  margin: 4px 16px 0;
  color: rgba(255, 255, 255, 0.82);
  text-align: center;
  font-size: 0.92rem;
  font-weight: 900;
}

.game-feedback.is-hit {
  color: var(--mint);
}

.game-feedback.is-miss {
  color: var(--gold);
}

.cleaner-lane {
  position: absolute;
  z-index: 4;
  right: 30px;
  bottom: 92px;
  left: 30px;
  height: 88px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
}

.cleaner-mover {
  position: absolute;
  left: 8%;
  bottom: 0;
  width: 84px;
  height: 76px;
  padding: 0;
  border: 0;
  background: transparent;
  transform: translateX(-50%);
  cursor: pointer;
}

.cleaner-launcher {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  transform-origin: center bottom;
}

.cleaner-hit-area {
  position: absolute;
  top: 70%;
  left: 49%;
  width: 44%;
  height: 25%;
  pointer-events: none;
}

.cleaner-art {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 7px 5px rgba(0, 0, 0, 0.45));
}

.cleaner-speech {
  position: absolute;
  top: 9px;
  left: calc(100% + 8px);
  width: max-content;
  max-width: 92px;
  padding: 6px 8px;
  border: 2px solid #232329;
  border-radius: 6px;
  color: #232329;
  background: #fff;
  font-size: 0.68rem;
  font-weight: 900;
  line-height: 1.25;
  white-space: nowrap;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.24);
}

.cleaner-speech::before {
  content: "";
  position: absolute;
  top: 13px;
  left: -7px;
  width: 10px;
  height: 10px;
  border-bottom: 2px solid #232329;
  border-left: 2px solid #232329;
  background: #fff;
  transform: rotate(45deg);
}

.cleaner-speech.is-long {
  width: 146px;
  max-width: calc(100vw - 132px);
  font-size: 0.7rem;
  white-space: normal;
}

.cleaner-mover.speech-left .cleaner-speech {
  right: calc(100% + 8px);
  left: auto;
}

.cleaner-mover.speech-left .cleaner-speech::before {
  right: -7px;
  left: auto;
  transform: rotate(225deg);
}

.cleaner-launcher.is-running {
  will-change: transform;
}

.osog-button {
  position: absolute;
  z-index: 5;
  right: 50%;
  bottom: max(16px, env(safe-area-inset-bottom));
  width: min(62%, 260px);
  min-height: 68px;
  display: grid;
  place-items: center;
  gap: 0;
  transform: translateX(50%);
  border: 2px solid #fff;
  border-radius: 6px;
  color: #fff;
  background: var(--red);
  background-clip: padding-box;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.46);
  cursor: pointer;
  touch-action: manipulation;
}

.osog-button span {
  font-size: 1.25rem;
  font-weight: 900;
}

.osog-button small {
  font-size: 0.68rem;
  font-weight: 700;
}

.osog-button:active:not(:disabled) {
  bottom: max(12px, calc(env(safe-area-inset-bottom) - 4px));
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.42);
}

/* Clear share page */
.clear-share-page {
  color: #fff;
  background: #08080b;
}

.clear-share-screen {
  width: min(100%, 760px);
  min-height: 100svh;
  margin: 0 auto;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 18px;
  padding: max(30px, env(safe-area-inset-top)) 22px max(30px, env(safe-area-inset-bottom));
  text-align: center;
}

.clear-share-screen h1 {
  margin: 0;
  font-family: "Noto Serif JP", serif;
  font-size: clamp(1.65rem, 5vw, 2.5rem);
}

.clear-share-image {
  width: min(100%, 680px);
  max-height: 56svh;
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.clear-share-copy {
  max-width: 34em;
  margin: 0;
  color: #e5e2e2;
  line-height: 1.8;
}

.clear-share-actions {
  width: min(100%, 420px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

@media (max-width: 520px) {
  .clear-share-actions {
    grid-template-columns: 1fr;
  }
}

.osog-button:disabled {
  cursor: default;
  opacity: 0.54;
}

.hero-button {
  position: absolute;
  z-index: 6;
  left: 14px;
  bottom: 184px;
  width: min(34%, 156px);
  min-height: 58px;
  display: grid;
  place-items: center;
  gap: 2px;
  padding: 8px 10px;
  border: 2px solid var(--gold);
  border-radius: 6px;
  color: #24170a;
  background: linear-gradient(145deg, #ffeeb0, #e9ad3b);
  box-shadow: 0 6px 0 #9c6418, 0 10px 22px rgba(0, 0, 0, 0.34);
  font-size: 0.72rem;
  font-weight: 900;
  line-height: 1.2;
  cursor: pointer;
  touch-action: manipulation;
}

.hero-button span,
.hero-button small {
  display: block;
  max-width: 100%;
  overflow-wrap: anywhere;
  text-align: center;
}

.hero-button span {
  font-size: 0.76rem;
}

.hero-button small {
  font-size: 0.62rem;
}

.hero-button:active:not(:disabled) {
  bottom: 180px;
  box-shadow: 0 3px 0 #9c6418, 0 7px 15px rgba(0, 0, 0, 0.3);
}

.hero-button:disabled {
  cursor: default;
  opacity: 0.36;
  filter: grayscale(0.55);
}

.hero-button[hidden] {
  display: none;
}

.hero-cutin {
  position: absolute;
  z-index: 18;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-cutin[hidden] {
  display: none;
}

.hero-cutin-frame {
  position: absolute;
  top: 46%;
  left: -60px;
  width: calc(100% + 120px);
  aspect-ratio: 469 / 148;
  overflow: hidden;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.58);
  transform: translate(-110%, -50%) rotate(-8deg);
}

.hero-cutin:not([hidden]) .hero-cutin-frame {
  animation: heroCutinSlash 2800ms ease-out both;
}

.play-screen.is-cutin-paused .cleaner-mover,
.play-screen.is-cutin-paused .cleaner-launcher,
.play-screen.is-cutin-paused .moon-wrap,
.play-screen.is-cutin-paused .stars {
  animation-play-state: paused !important;
}

.hero-cutin-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@keyframes heroCutinSlash {
  0% {
    opacity: 0;
    transform: translate(-110%, -50%) rotate(-8deg);
  }
  9% {
    opacity: 1;
    transform: translate(0, -50%) rotate(-8deg);
  }
  80% {
    opacity: 1;
    transform: translate(0, -50%) rotate(-8deg);
  }
  100% {
    opacity: 0;
    transform: translate(0, -50%) rotate(-8deg);
  }
}

.countdown-overlay,
.result-overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(5, 4, 8, 0.8);
  backdrop-filter: blur(5px);
}

.countdown-overlay[hidden] {
  display: none;
}

.countdown-overlay p {
  margin: 0;
  color: #fff;
  font-size: 5rem;
  font-weight: 900;
  text-align: center;
  animation: countdownPop 720ms ease both;
}

.countdown-overlay p.is-start {
  color: var(--gold);
  font-size: 2.1rem;
}

.result-overlay[hidden] {
  display: none;
}

.result-panel[hidden],
.reward-modal[hidden] {
  display: none;
}

.result-panel {
  position: relative;
  z-index: 2;
  width: min(100%, 520px);
  padding: 30px 22px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(12, 10, 16, 0.94);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.48);
  text-align: center;
}

.reward-modal {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: grid;
  place-items: center;
  padding: 14px;
}

.reward-modal-shell {
  position: relative;
  width: min(100%, 560px);
  max-height: calc(100svh - 28px);
  overflow: auto;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(12, 10, 16, 0.97);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.58);
  text-align: center;
}

.reward-modal-shell h2 {
  margin: 6px 0 14px;
  color: var(--gold);
  font-family: "Noto Serif JP", serif;
  font-size: 1.7rem;
}

.reward-modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  padding: 0 0 3px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 50%;
  color: #fff;
  background: rgba(8, 8, 12, 0.72);
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
}

.reward-modal-close:hover,
.reward-modal-close:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

.reward-image {
  display: block;
  width: 100%;
  max-height: 54svh;
  object-fit: contain;
  background: #050507;
}

.reward-modal-actions {
  display: grid;
  justify-items: center;
  gap: 10px;
  margin-top: 16px;
}

.result-panel h2 {
  margin: 8px 0 12px;
  color: var(--gold);
  font-family: "Noto Serif JP", serif;
  font-size: 2rem;
  overflow-wrap: anywhere;
}

.result-panel p:not(.result-kicker) {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.result-actions {
  display: grid;
  gap: 10px;
  justify-items: center;
  margin-top: 24px;
}

.confetti {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.confetti-piece {
  position: absolute;
  top: -12%;
  width: 9px;
  height: 20px;
  background: var(--piece-color, var(--gold));
  animation: confettiFall var(--fall-time, 2.8s) linear var(--fall-delay, 0s) infinite;
}

@keyframes moonCelebrate {
  0%, 100% { transform: scale(1); }
  45% { transform: scale(1.055); }
}

@keyframes countdownPop {
  0% { opacity: 0; transform: scale(0.6); }
  35% { opacity: 1; transform: scale(1.1); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes confettiFall {
  to { transform: translate3d(var(--drift, 40px), 118vh, 0) rotate(560deg); }
}

@media (min-width: 760px) {
  .landing-screen {
    background-size: contain;
    background-repeat: no-repeat;
    background-color: #050507;
  }

  .explanation-screen {
    padding-top: 46px;
    padding-bottom: 46px;
  }

  .play-screen {
    min-height: min(100svh, 920px);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
  }
}

@media (max-width: 759px) {
  .landing-screen {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center 43%;
  }
}

@media (max-height: 720px) {
  .moon-wrap {
    width: min(58vw, 290px);
  }

  .cleaner-lane {
    height: 72px;
  }

  .cleaner-mover {
    width: 70px;
    height: 64px;
  }

  .hero-button {
    bottom: 166px;
  }

  .hero-button:active:not(:disabled) {
    bottom: 162px;
  }
}

@media (orientation: landscape) and (max-height: 560px) {
  .play-screen {
    grid-template-columns: 230px minmax(0, 1fr);
    grid-template-rows: auto 1fr;
  }

  .play-header {
    grid-column: 1;
  }

  .status-bar {
    grid-column: 1;
    align-content: start;
    grid-template-columns: 1fr;
  }

  .game-stage {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .moon-wrap {
    width: min(47vh, 280px);
  }

  .cleaner-lane {
    bottom: 82px;
  }

  .device-note::after {
    content: "（縦向きがおすすめです）";
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}