/* すべてのシーン共通のスタイル */
:root {
  --sky: #bde6ff;
  --grass: #b9f0a6;
  --card: rgba(255, 255, 255, 0.78);
  --accent: #ffd84d;
  --accent-text: #5a4300;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--sky);
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: none;
  overscroll-behavior: none;
  font-family: "Hiragino Maru Gothic ProN", "Rounded Mplus 1c", "Yu Gothic", sans-serif;
}
body { position: fixed; inset: 0; }
img { pointer-events: none; -webkit-user-drag: none; }

/* 画面いっぱいのステージ（セーフエリア込み・上部はボタン分あける） */
#stage {
  position: absolute;
  inset: 0;
  padding: calc(env(safe-area-inset-top) + 64px) calc(env(safe-area-inset-right) + 12px)
           calc(env(safe-area-inset-bottom) + 12px) calc(env(safe-area-inset-left) + 12px);
}

/* タッチした場所に飛び散る粒 */
.particle {
  position: fixed; left: 0; top: 0;
  pointer-events: none;
  font-size: 26px;
  animation: fly 0.8s ease-out forwards;
  z-index: 10;
}
@keyframes fly {
  0%   { transform: translate(var(--x), var(--y)) scale(0.6); opacity: 1; }
  100% { transform: translate(calc(var(--x) + var(--dx)), calc(var(--y) + var(--dy))) scale(1.4); opacity: 0; }
}

/* 上部の丸ボタン（長押し系） */
.topbtn {
  position: fixed;
  top: calc(env(safe-area-inset-top) + 10px);
  height: 44px; min-width: 44px;
  padding: 0 14px;
  border-radius: 22px;
  border: none;
  background: rgba(255,255,255,.6);
  color: #6a6a6a;
  font-size: 20px;
  font-weight: bold;
  z-index: 20;
  touch-action: none;
  font-family: inherit;
  overflow: hidden;
}
.topbtn.left  { left:  calc(env(safe-area-inset-left) + 10px); }
.topbtn.right { right: calc(env(safe-area-inset-right) + 10px); }
.topbtn.on { background: var(--accent); color: var(--accent-text); }
.topbtn.holding { transform: scale(0.9); }
.topbtn.hidden { display: none; }
/* 長押しの進み具合 */
.topbtn::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  height: 4px; width: 0;
  border-radius: 2px;
  background: #ff8c42;
}
.topbtn.holding::after { width: 100%; transition: width 1.5s linear; }

/* 最初のひとタッチ（音の解放） */
#start {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 16px;
  background: rgba(189, 230, 255, 0.96);
  z-index: 30;
  font-size: 28px;
  color: #345;
}
#start .big { font-size: 90px; animation: wiggle 1.2s ease-in-out infinite; }
#start .big img { width: 160px; height: 160px; }
@keyframes wiggle {
  0%, 100% { transform: rotate(-8deg); }
  50%      { transform: rotate(8deg); }
}
#start.hide { display: none; }

/* 正解などの大きなお祝い */
#cheer {
  position: fixed; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  pointer-events: none;
  z-index: 25;
  font-size: min(18vw, 120px);
  animation: pop 1.6s ease forwards;
}
#cheer.show { display: flex; }
@keyframes pop {
  0%   { transform: scale(0.3); opacity: 0; }
  20%  { transform: scale(1.2); opacity: 1; }
  80%  { transform: scale(1);   opacity: 1; }
  100% { transform: scale(1.1); opacity: 0; }
}

/* シールをもらったときの表示 */
#rewardBox {
  position: fixed; inset: 0; z-index: 40;
  display: none; align-items: center; justify-content: center;
  background: rgba(255, 240, 180, .85);
}
#rewardBox.show { display: flex; }
#rewardBox .card {
  background: #fff; border-radius: 28px; padding: 20px 28px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  box-shadow: 0 8px 0 rgba(0,0,0,.12);
  animation: pop-in .5s cubic-bezier(.3,1.6,.5,1);
}
#rewardBox .ttl { font-size: 24px; font-weight: bold; color: #a05a00; }
#rewardBox .card.rare { box-shadow: 0 0 0 8px #ffc107, 0 8px 0 rgba(0,0,0,.12); background: #fffbe6; }
#rewardBox img { width: min(50vw, 220px); height: min(50vw, 220px); object-fit: contain; }
#rewardBox .cnt { font-size: 16px; color: #789; }
@keyframes pop-in { 0% { transform: scale(.3); } 100% { transform: scale(1); } }

/* レベル表示（ゲーム画面の上・中央） */
#levelPill {
  position: fixed; top: calc(env(safe-area-inset-top) + 14px); left: 50%; transform: translateX(-50%);
  height: 36px; padding: 0 12px; border-radius: 18px; background: rgba(255,255,255,.75);
  color: #5a4300; font-size: 14px; font-weight: bold; display: flex; align-items: center; gap: 4px; z-index: 20;
  box-shadow: 0 2px 0 rgba(0,0,0,.08); pointer-events: none;
}
#levelPill .m { font-size: 18px; }
/* レベルアップ */
#levelUpBox { position: fixed; inset: 0; z-index: 41; display: none; align-items: center; justify-content: center; background: rgba(180, 230, 255, .85); }
#levelUpBox.show { display: flex; }
#levelUpBox .card { background: #fff; border-radius: 28px; padding: 24px 36px; display: flex; flex-direction: column; align-items: center; gap: 6px; box-shadow: 0 8px 0 rgba(0,0,0,.12); animation: pop-in .5s cubic-bezier(.3,1.6,.5,1); }
#levelUpBox .m { font-size: 90px; line-height: 1; }
#levelUpBox .ttl { font-size: 28px; font-weight: bold; color: #1565c0; }
#levelUpBox .lv { font-size: 20px; color: #789; font-weight: bold; }

/* おしまい画面 */
#timeUp {
  position: fixed; inset: 0; z-index: 50;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  background: #2b2d42; color: #fff; font-size: 30px; font-weight: bold;
}
#timeUp .big { font-size: 100px; }
#timeUp .sub { font-size: 20px; font-weight: normal; opacity: .8; }
#timeUp .topbtn { position: static; margin-top: 24px; font-size: 16px; }

.bounce { animation: bounce 0.55s cubic-bezier(.3,1.6,.5,1); }
@keyframes bounce {
  0%   { transform: scale(1) translateY(0); }
  30%  { transform: scale(1.25, 0.8) translateY(6%); }
  60%  { transform: scale(0.9, 1.2) translateY(-22%); }
  100% { transform: scale(1) translateY(0); }
}
.glow { animation: glow 0.9s ease; }
@keyframes glow {
  0%, 100% { box-shadow: 0 6px 0 rgba(0,0,0,.08); }
  50%      { box-shadow: 0 0 0 14px rgba(255, 214, 0, 0.55), 0 6px 0 rgba(0,0,0,.08); }
}
.shake { animation: shake 0.4s ease; }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}