:root {
  --color-bg: #FAF7F2;
  --color-ink: #272727;
  --color-coral: #EF7B63;
  --color-blue: #7093B5;
  --color-sage: #9AB5A2;

  --radius: 20px;
  --stage-w: 720px;
  --stage-h: 1280px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
}

button {
  font-family: inherit;
  cursor: pointer;
  touch-action: manipulation; /* スマホでのダブルタップ判定待ちによる反応遅れを防ぐ */
}

img, svg {
  display: block;
  max-width: 100%;
}

.hidden {
  display: none !important;
}

/* ============ 共通ボタン ============ */

.btn-primary {
  background: var(--color-coral);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 14px 32px;
  font-size: 1.1rem;
  font-weight: bold;
  transition: transform 0.15s ease;
}

.btn-primary:hover,
.btn-primary:active {
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .btn-primary:hover,
  .btn-primary:active {
    transform: none;
  }
}

/* ============ トップ画面 ============ */
/* スマホのホーム画面のように、スクロールなしで1画面に収める */

#screen-top {
  height: 100dvh;
  width: 100%;
  overflow: hidden;
  padding: clamp(10px, 3vh, 32px) 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  gap: clamp(8px, 2vh, 24px);
}

.top-header {
  text-align: center;
  flex: 0 0 auto;
}

.logo {
  margin: 0;
  font-size: clamp(1.5rem, 5vh, 2.4rem);
  letter-spacing: 0.04em;
}

.tagline {
  margin: clamp(4px, 1vh, 8px) 0 0;
  font-size: clamp(0.8rem, 2.2vh, 1rem);
  color: var(--color-ink);
}

.app-version {
  margin: 4px 0 0;
  font-size: 0.75rem;
  color: #B8B0A6;
}

.level-panel {
  width: 100%;
  max-width: 480px;
  text-align: center;
  flex: 0 0 auto;
}

.level-panel__title {
  margin: 0 0 clamp(6px, 1.5vh, 12px);
  font-size: clamp(0.8rem, 2vh, 1rem);
  font-weight: bold;
}

.level-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.level-btn {
  flex: 1;
  padding: clamp(8px, 1.6vh, 12px) 8px;
  border-radius: var(--radius);
  border: 1.5px solid var(--color-ink);
  background: var(--color-bg);
  color: var(--color-ink);
  font-size: clamp(0.8rem, 2vh, 0.95rem);
  font-weight: bold;
}

.level-btn[aria-pressed="true"] {
  background: var(--color-coral);
  border-color: var(--color-coral);
  color: #fff;
}

/* ホーム画面のアプリアイコンのように、常に横一列で並べる */
.game-icons {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: flex-start;
  gap: clamp(12px, 4vw, 40px);
  width: 100%;
  flex: 0 0 auto;
}

.game-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(6px, 1.2vh, 10px);
  background: none;
  border: none;
  padding: 0;
  max-width: 30vw;
  transition: transform 0.15s ease;
}

.game-icon:hover,
.game-icon:focus-visible {
  transform: translateY(-3px);
}

@media (prefers-reduced-motion: reduce) {
  .game-icon:hover,
  .game-icon:focus-visible {
    transform: none;
  }
}

.game-icon__art {
  width: clamp(64px, min(24vw, 22vh), 150px);
  height: clamp(64px, min(24vw, 22vh), 150px);
  background: var(--color-bg);
  border: 1.5px solid var(--color-ink);
  border-radius: 26%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 10%;
}

.game-icon__art svg,
.game-icon__art img {
  width: 100%;
  height: 100%;
}

.game-icon__art--portrait {
  padding: 0;
}

.game-icon__art--portrait img {
  object-fit: cover;
}

.game-icon__label {
  margin: 0;
  font-size: clamp(0.72rem, 2.4vw, 0.95rem);
  line-height: 1.3;
  text-align: center;
}

/* ============ ゲーム画面 ============ */

#screen-game {
  position: fixed;
  inset: 0;
}

.stage-wrapper {
  position: absolute;
  inset: 0;
  overflow: hidden;
  touch-action: none;
}

.stage {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--stage-w);
  height: var(--stage-h);
  transform-origin: center center;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.stage-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
}

.stage-logo {
  font-size: 2.2rem;
  font-weight: bold;
  letter-spacing: 0.03em;
}

.header-nav {
  display: flex;
  gap: 10px;
}

.header-nav__btn {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  border: 1.5px solid var(--color-ink);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease;
}

.header-nav__btn svg {
  width: 44px;
  height: 44px;
}

.header-nav__btn:hover,
.header-nav__btn:active {
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .header-nav__btn:hover,
  .header-nav__btn:active {
    transform: none;
  }
}

.game-viewport {
  flex: 1 1 auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px calc(16px + env(safe-area-inset-bottom));
}

.panel {
  text-align: center;
  max-width: 100%;
}

.pregame-panel__title {
  margin: 0 0 20px;
  font-size: 3.2rem;
}

.pregame-panel__howto {
  margin: 0 0 32px;
  font-size: 2.2rem;
  line-height: 1.6;
}

.timer-ring {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 90px;
}

.timer-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-ring__bg {
  fill: none;
  stroke: rgba(39, 39, 39, 0.15);
  stroke-width: 6;
}

.timer-ring__progress {
  fill: none;
  stroke: var(--color-coral);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 213.6;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.1s linear;
}

.timer-ring__number {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.2rem;
  font-weight: bold;
}

.play-area {
  position: absolute;
  inset: 0;
  /* 上: タイマーリングとの余白 / 下: 画面下部に出す結果バナーとの余白 */
  padding: 106px 20px calc(120px + env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 結果表示中は、盤面(スリングショットの支点など)は見せたままタッチだけ無効にする。
   「もう一回」をタップしたときに、下に残っている盤面のタッチ判定が
   一部端末でタップを一回吸ってしまい、二回押さないと反応しないように見える
   不具合の対策(念のための二重の安全策)。 */
.play-area--frozen {
  pointer-events: none;
}

.play-area__placeholder {
  font-size: 2rem;
  color: rgba(39, 39, 39, 0.5);
}

/* ============ ゲーム1: 神経衰弱 ============ */

.memory-board {
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), var(--card-w, 140px));
  grid-auto-rows: var(--card-h, 187px);
  gap: 16px;
  justify-content: center;
  align-content: center;
}

.memory-card {
  background: none;
  border: none;
  padding: 0;
  width: var(--card-w, 140px);
  height: var(--card-h, 187px);
  perspective: 800px;
}

.memory-card__inner {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.25s ease;
  transform-style: preserve-3d;
}

.memory-card.is-flipped .memory-card__inner,
.memory-card.is-matched .memory-card__inner {
  transform: rotateY(180deg);
}

.memory-card__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 14px;
  border: 1.5px solid var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
}

.memory-card__face--back {
  background: var(--color-blue);
}

.memory-card__face--front {
  background: var(--color-bg);
  transform: rotateY(180deg);
  padding: 12%;
}

.memory-card__face--front svg {
  width: 100%;
  height: 100%;
}

.memory-card.is-matched .memory-card__face--front {
  border-color: var(--color-coral);
}

@media (prefers-reduced-motion: reduce) {
  .memory-card__inner {
    transition: none;
  }
}

/* ============ ゲーム2: 金魚をよけてコイン入れ ============ */

.coin-game {
  display: flex;
  align-items: center;
  justify-content: center;
}

.coin-tank {
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
  border: 4px solid var(--color-ink);
  border-radius: 24px;
  touch-action: none;
}

.coin-water {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: #dceef3;
  border-top: 3px solid #272727;
  pointer-events: none;
}

.coin-tank img {
  -webkit-user-drag: none;
  user-select: none;
}

.coin-fish,
.coin-cup {
  position: absolute;
  pointer-events: none;
}

.coin-fish {
  --dir: 1;
  animation: coin-fish-swim 0.7s ease-in-out infinite;
  transform-origin: 72% 50%;
}

@keyframes coin-fish-swim {
  0%,
  100% {
    transform: scaleX(var(--dir)) rotate(0deg);
  }
  50% {
    transform: scaleX(var(--dir)) rotate(5deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .coin-fish {
    animation: none;
  }
}

.coin-coin {
  position: absolute;
  pointer-events: none; /* ドラッグはタンク全体で受け付けるため、コイン自体はクリックを奪わない */
}

.coin-coin:active {
  cursor: grabbing;
}

.coin-message {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  padding: 6px 20px;
  background: rgba(250, 247, 242, 0.94);
  border: 1.5px solid var(--color-ink);
  border-radius: var(--radius);
  font-size: 1.5rem;
  font-weight: bold;
  white-space: nowrap;
}

/* ============ ゲーム3: メガネをとどけよう ============ */

.glasses-game {
  display: flex;
  align-items: center;
  justify-content: center;
}

.glasses-court {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #CFE7EF 0%, var(--color-bg) 55%);
  border: 4px solid var(--color-ink);
  border-radius: 24px;
  touch-action: none;
}

.glasses-house {
  position: absolute;
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

.glasses-person {
  position: absolute;
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
  transition: left 0.05s linear;
  /* transformはあえてtransitionさせない: 左右反転(scaleX -1 <-> 1)を
     アニメーションさせると、必ず0を通過する瞬間に潰れて見えてしまうため、
     向きの反転・ジャンプの持ち上げは瞬時に切り替える */
}

.glasses-glasses {
  position: absolute;
  pointer-events: none; /* ドラッグは.glasses-court全体で受けるため */
  -webkit-user-drag: none;
  user-select: none;
  filter: drop-shadow(0 3px 3px rgba(39, 39, 39, 0.2));
}

/* スリングショットのゴム: 支点からメガネへ伸びる線。左端を支点に固定して回転・伸縮させる */
.glasses-sling-line {
  position: absolute;
  height: 4px;
  background: var(--color-coral);
  border-radius: 2px;
  opacity: 0.6;
  transform-origin: left center;
  pointer-events: none;
}

/* ============ 成功時のお祝い演出(紙吹雪) ============ */

.celebration {
  position: absolute;
  inset: 0;
  z-index: 4; /* 結果バナー(5)より下、ゲーム画面より上 */
  overflow: hidden;
  pointer-events: none;
}

.celebration__piece {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  opacity: 0;
  transform: translate(-50%, -50%);
}

.celebration.is-playing .celebration__piece {
  animation-name: celebration-burst;
  animation-duration: 1.6s;
  animation-timing-function: cubic-bezier(0.15, 0.7, 0.3, 1);
  animation-fill-mode: forwards;
}

@keyframes celebration-burst {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) translate(0, 0) rotate(0deg) scale(0.5);
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) translate(var(--dx), calc(var(--dy) + 220px)) rotate(var(--rot)) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .celebration.is-playing .celebration__piece {
    animation: none;
    opacity: 0;
  }
}

/* 揃った盤面・失敗時の盤面を隠さないよう、結果は上部の細いバナーで見せる */
.result-panel {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
  pointer-events: none;
}

.result-panel__card {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 92%;
  background: rgba(250, 247, 242, 0.96);
  border: 1.5px solid var(--color-ink);
  border-radius: var(--radius);
  padding: 14px 26px;
  box-shadow: 0 6px 20px rgba(39, 39, 39, 0.15);
}

.result-panel__message {
  margin: 0;
  font-size: 1.8rem;
  font-weight: bold;
  white-space: nowrap;
}

/* スマホでも押しやすいよう、結果画面の「もう一回」は大きめにする */
.result-panel .btn-primary {
  padding: 18px 40px;
  font-size: 2rem;
  white-space: nowrap;
}

/* 開始前画面のスタートボタンは、拡大縮小されるゲーム領域内で読みやすいよう大きめにする */
.pregame-panel .btn-primary {
  padding: 24px 56px;
  font-size: 2.3rem;
}