/* ===== だじゃれフレンズと はみがき (v2) ===== */
:root{
  --bg:#fdf7ee; --bg2:#fffdf8; --card:#fffdf8;
  --ink:#5b4f42; --ink-strong:#2f2820; --ink-soft:#8a7c6c;
  --primary:#c0714e; --primary-ink:#fff8f2; --primary-sh:rgba(192,113,78,.35);
  --secondary:#899e6a; --secondary-ink:#fff;
  --gold:#d8b063; --pink:#d69498; --sage:#899e6a;
  --chip:#f3e3c6; --chip-ink:#7a5a2c;
  --shadow:rgba(90,60,30,.14); --shadow-soft:rgba(90,60,30,.10);
  --line:rgba(90,60,30,.12);
  --brush-bg:#262019; --brush-ink:#efe6db; --brush-sub:#a89a86;
  --sticker-rim:#ffffff;
}
html[data-theme="dark"]{
  --bg:#262019; --bg2:#2f2820; --card:#2f2820;
  --ink:#e7ddcf; --ink-strong:#efe6db; --ink-soft:#a89a86;
  --primary:#d8956a; --primary-ink:#2b211a; --primary-sh:rgba(216,149,106,.35);
  --secondary:#a6bd86; --secondary-ink:#23291a;
  --gold:#e7c98f; --pink:#e3a9ad; --sage:#a6bd86;
  --chip:#3a3026; --chip-ink:#e7c98f;
  --shadow:rgba(0,0,0,.40); --shadow-soft:rgba(0,0,0,.30);
  --line:rgba(255,255,255,.10);
  --brush-bg:#1c1813; --brush-ink:#efe6db; --brush-sub:#9c8f7d;
  --sticker-rim:#efe6db;
}
@media (prefers-color-scheme: dark){
  html[data-theme="auto"]{
    --bg:#262019; --bg2:#2f2820; --card:#2f2820;
    --ink:#e7ddcf; --ink-strong:#efe6db; --ink-soft:#a89a86;
    --primary:#d8956a; --primary-ink:#2b211a; --primary-sh:rgba(216,149,106,.35);
    --secondary:#a6bd86; --secondary-ink:#23291a;
    --gold:#e7c98f; --pink:#e3a9ad; --sage:#a6bd86;
    --chip:#3a3026; --chip-ink:#e7c98f;
    --shadow:rgba(0,0,0,.40); --shadow-soft:rgba(0,0,0,.30);
    --line:rgba(255,255,255,.10);
    --brush-bg:#1c1813; --brush-ink:#efe6db; --brush-sub:#9c8f7d;
    --sticker-rim:#efe6db;
  }
}

*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:'M PLUS Rounded 1c',system-ui,sans-serif;
  background:var(--bg); color:var(--ink);
  -webkit-font-smoothing:antialiased; overscroll-behavior:none;
  transition:background .3s ease,color .3s ease;
}
.screen{display:none;min-height:100dvh;padding:env(safe-area-inset-top) 20px env(safe-area-inset-bottom)}
.screen.is-active{display:block}

/* buttons */
.btn{font-family:inherit;font-weight:800;border:none;border-radius:30px;cursor:pointer;
  padding:14px 26px;font-size:17px;transition:transform .08s ease,box-shadow .2s ease}
.btn:active{transform:scale(.96)}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:0 6px 14px var(--primary-sh)}
.btn-secondary{background:var(--secondary);color:var(--secondary-ink);box-shadow:0 6px 14px rgba(137,158,106,.30)}
.btn-big{font-size:20px;padding:18px 34px;border-radius:34px}
.btn-ghost{background:transparent;color:var(--ink-soft);box-shadow:none;font-weight:700}
.btn-danger{color:var(--pink)}

/* ===== gate ===== */
#gate{display:none;place-items:center}
#gate.is-active{display:grid}
.gate-card{width:100%;max-width:340px;text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}
.gate-emoji{font-size:46px}
.gate-title{font-size:26px;font-weight:800;color:var(--ink-strong);line-height:1.35}
.gate-lead{color:var(--ink-soft);font-size:15px}
#gate-form{display:flex;flex-direction:column;gap:12px;width:100%;align-items:center}
#gate-input{width:100%;max-width:280px;padding:14px 18px;font-size:17px;font-family:inherit;
  border:2px solid var(--line);border-radius:18px;background:var(--card);color:var(--ink-strong);text-align:center}
#gate-input:focus{outline:none;border-color:var(--primary)}
.gate-error{color:var(--pink);font-size:14px;font-weight:700}

/* ===== home ===== */
#home{display:none}
#home.is-active{display:grid;place-items:center}
.home-inner{width:100%;max-width:380px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;padding:22px 14px}
.home-title{font-size:20px;font-weight:800;color:var(--ink-strong);line-height:1.4}
.home-friends{display:flex;gap:8px;height:54px;align-items:center}
.home-friends .sticker{width:48px;height:48px}
.progress-card{background:var(--card);border-radius:22px;padding:16px 22px;box-shadow:0 4px 12px var(--shadow-soft);width:88%}
.progress-label{font-size:13px;color:var(--ink-soft)}
.progress-count{font-size:26px;font-weight:800;color:var(--primary);margin-top:2px}
.progress-count span{font-size:30px}
.progress-mini{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;margin-top:8px}
.progress-mini i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.progress-mini i.on{background:var(--gold)}
.streak-line{font-size:13px;color:var(--ink-soft);min-height:18px;font-weight:700}
.home-nav{display:flex;gap:10px;margin-top:2px}
.chip{font-family:inherit;font-weight:700;font-size:14px;background:var(--chip);color:var(--chip-ink);
  border:none;border-radius:16px;padding:10px 16px;cursor:pointer}
.chip:active{transform:scale(.96)}

/* ===== round sticker ===== */
.sticker{border-radius:50%;background:var(--st-bg,#f3e3c6);border:4px solid var(--sticker-rim);
  box-shadow:0 4px 10px var(--shadow);overflow:hidden;display:grid;place-items:center;position:relative}
.sticker img{width:84%;height:84%;object-fit:contain}
.sticker-xl{width:200px;height:200px;border-width:7px;animation:pop .5s ease}

/* ===== brush (song) ===== */
.brush-screen{background:var(--brush-bg);transition:background .3s ease}
#brush.is-active{display:grid;place-items:center}
.brush-inner{width:100%;max-width:360px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.brush-song{font-size:13px;color:var(--brush-sub)}
.brush-char{width:150px;height:150px;animation:bob 1.4s ease-in-out infinite}
.brush-char img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(2.5px 0 0 #fff) drop-shadow(-2.5px 0 0 #fff) drop-shadow(0 2.5px 0 #fff) drop-shadow(0 -2.5px 0 #fff) drop-shadow(2px 2px 0 #fff) drop-shadow(-2px 2px 0 #fff) drop-shadow(2px -2px 0 #fff) drop-shadow(-2px -2px 0 #fff) drop-shadow(0 8px 12px rgba(0,0,0,.35))}
.brush-timer{font-size:50px;font-weight:800;color:var(--brush-ink);font-variant-numeric:tabular-nums;letter-spacing:1px}
.brush-bar{width:80%;height:10px;border-radius:6px;background:rgba(255,255,255,.12);overflow:hidden}
.brush-bar-fill{height:100%;width:0%;background:linear-gradient(90deg,#d8956a,#e7c98f);transition:width 1s linear}
.brush-screen .btn-ghost,.video-screen .btn-ghost{color:var(--brush-sub)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* lyrics (karaoke) */
.lyrics{display:flex;flex-direction:column;gap:6px;min-height:96px;justify-content:center;width:100%;text-align:center;padding:0 4px}
.lyrics .line{font-size:15px;font-weight:700;color:var(--brush-sub);opacity:.45;transition:all .25s ease}
.lyrics .line.active{opacity:1;color:#ffe6c4;font-size:18px;font-weight:800}

/* ===== video ===== */
.video-screen{background:var(--brush-bg)}
#video.is-active{display:grid;place-items:center}
.video-inner{width:100%;max-width:420px;display:flex;flex-direction:column;align-items:center;gap:14px}
.video-frame{width:100%;border-radius:20px;overflow:hidden;box-shadow:0 10px 26px rgba(0,0,0,.35);background:#000}
.video-frame video{width:100%;display:block}

/* ===== reward ===== */
#reward.is-active{display:grid;place-items:center}
.reward-inner{width:100%;max-width:360px;text-align:center}
.reward-inner>div{display:flex;flex-direction:column;align-items:center;gap:16px}
.reward-inner>div[hidden]{display:none}
.done-burst{font-size:50px;animation:pop .5s ease}
.done-title{font-size:21px;font-weight:800;color:var(--ink-strong);padding:0 6px}
.done-sub{color:var(--ink-soft);font-size:15px;font-weight:700;line-height:1.6}
.reward-actions{display:flex;flex-direction:column;gap:10px;align-items:center;width:100%}
.reward-actions .btn{min-width:200px}
@keyframes pop{0%{transform:scale(.5) rotate(-8deg);opacity:0}70%{transform:scale(1.1) rotate(3deg)}100%{transform:scale(1) rotate(0);opacity:1}}

/* ===== page head ===== */
.page-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:18px 2px 10px;position:sticky;top:0;background:var(--bg);z-index:2}
.back-btn{font-family:inherit;font-weight:700;font-size:15px;background:none;border:none;color:var(--primary);cursor:pointer;padding:6px 4px}
.page-title{font-size:18px;font-weight:800;color:var(--ink-strong)}
.page-count{font-size:14px;font-weight:800;color:var(--ink-soft);min-width:42px;text-align:right}

/* ===== sticker book ===== */
.book-msg{text-align:center;font-size:13px;color:var(--ink-soft);font-weight:700;margin:2px 0 12px}
.book-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;padding:4px 4px 24px;justify-items:center;max-width:420px;margin:0 auto} /* 1ヶ月カレンダー風（7列×31日） */
.book-grid .sticker{width:100%;max-width:56px;aspect-ratio:1}
.book-grid .empty{width:100%;max-width:56px;aspect-ratio:1;border-radius:50%;border:2px dashed var(--line);
  display:grid;place-items:center;color:var(--ink-soft);font-size:11px;font-weight:700;opacity:.7}
@media (min-width:520px){.book-grid{gap:10px;max-width:480px}}
.book-grid .sticker{cursor:pointer}

/* ===== sticker zoom（タップで拡大） ===== */
.sticker-zoom{position:fixed;inset:0;z-index:120;background:rgba(42,32,28,.5);backdrop-filter:blur(3px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;cursor:pointer}
.sticker-zoom[hidden]{display:none}
.sticker-zoom-big{width:min(72vw,320px);height:min(72vw,320px);border-width:8px;animation:pop .4s ease}
.zoom-hint{color:#fff;font-weight:700;font-size:13px;opacity:.9}

/* ===== settings ===== */
.settings-inner{max-width:420px;margin:0 auto;display:flex;flex-direction:column;gap:24px;padding-top:8px}
.setting-block{background:var(--card);border-radius:20px;padding:18px;box-shadow:0 4px 12px var(--shadow-soft)}
.setting-label{font-size:15px;font-weight:800;color:var(--ink-strong);margin-bottom:12px}
.seg{display:flex;gap:6px;background:var(--bg);border-radius:14px;padding:5px}
.seg-btn{flex:1;font-family:inherit;font-weight:700;font-size:14px;border:none;border-radius:11px;
  padding:10px 0;background:transparent;color:var(--ink-soft);cursor:pointer}
.seg-btn.on{background:var(--primary);color:var(--primary-ink)}
.setting-hint{font-size:12px;color:var(--ink-soft);margin-top:10px;line-height:1.6}
.setting-foot{text-align:center;font-size:12px;color:var(--ink-soft);opacity:.7}

/* シールを今ペタッと貼った風アニメ */
.sticker.stick-on{animation:stickOn .72s cubic-bezier(.18,.9,.25,1.15) both}
@keyframes stickOn{
  0%{transform:translateY(-54px) scale(1.55) rotate(-16deg);opacity:0}
  45%{opacity:1}
  70%{transform:translateY(5px) scale(.93) rotate(-3deg)}      /* 押し付ける */
  100%{transform:translateY(0) scale(1) rotate(-5deg);opacity:1} /* 少し傾いて貼り付く */
}
.sticker.stick-on::before{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 32%,rgba(255,255,255,.6) 48%,transparent 64%);
  transform:translateX(-130%);animation:stickShine .55s ease .42s both;pointer-events:none}
@keyframes stickShine{to{transform:translateX(130%)}}


/* ホームのロゴ */
.home-logo{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%}
.logo-img{width:100%;max-width:360px;border-radius:22px;box-shadow:0 8px 22px var(--shadow)}
.home-title{font-size:22px;font-weight:800;line-height:1.25;display:flex;flex-direction:column;gap:1px;text-align:center}
.home-title .t2{color:var(--primary);font-size:26px;letter-spacing:2px}

/* 動画プレーヤーの操作ボタン */
.vctrls{display:flex;gap:10px;justify-content:center;align-items:flex-end;width:100%;margin-top:2px}
.vbtn{font-family:inherit;font-weight:800;border:none;cursor:pointer;border-radius:18px;
  background:rgba(255,255,255,.12);color:var(--brush-ink);padding:9px 12px;font-size:22px;
  display:flex;flex-direction:column;align-items:center;gap:2px;min-width:80px;transition:transform .08s ease}
.vbtn span{font-size:12px;font-weight:700;color:var(--brush-sub)}
.vbtn:active{transform:scale(.95)}
.vbtn-main{background:var(--primary);color:var(--primary-ink);padding:13px 14px}
.vbtn-main span{color:var(--primary-ink);opacity:.92}


/* シール帳のリセット */
.book-reset{display:flex;justify-content:center;padding:6px 0 36px}

/* ===== ホーム：だじゃれフレンズ紹介バナー ===== */
.about-banner{display:block;width:88%;text-align:center;text-decoration:none;
  font-family:inherit;font-weight:700;font-size:14px;color:var(--ink-soft);
  background:var(--card);border-radius:16px;padding:11px 16px;
  box-shadow:0 2px 8px var(--shadow-soft);margin-top:2px;
  transition:opacity .15s ease}
.about-banner:active{opacity:.7}
.privacy-link{font-size:12px;font-weight:700;color:var(--ink-soft);text-decoration:none;opacity:.8}
.privacy-link:active{opacity:.55}

/* ===== プライバシーポリシー ===== */
.privacy-page{min-height:100dvh;background:var(--bg);color:var(--ink);padding:28px 20px 48px}
.privacy-wrap{max-width:720px;margin:0 auto}
.privacy-card{background:var(--card);border-radius:22px;padding:24px 20px;box-shadow:0 6px 18px var(--shadow-soft)}
.privacy-kicker{font-size:13px;font-weight:800;color:var(--primary);margin-bottom:6px}
.privacy-title{font-size:26px;font-weight:800;color:var(--ink-strong);line-height:1.35;margin-bottom:10px}
.privacy-lead{font-size:15px;line-height:1.9;color:var(--ink);margin-bottom:20px}
.privacy-section{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}
.privacy-section h2{font-size:17px;font-weight:800;color:var(--ink-strong);margin-bottom:8px}
.privacy-section p,.privacy-section li{font-size:14px;line-height:1.9;color:var(--ink)}
.privacy-section ul{padding-left:1.2em}
.privacy-date{font-size:12px;color:var(--ink-soft);margin-top:20px;line-height:1.7}
.privacy-home{display:inline-flex;margin-top:18px;color:var(--primary);font-size:14px;font-weight:800;text-decoration:none}

/* はみがき（動画＋歌詞を1ページに） */
.play-screen{background:var(--brush-bg);transition:background .3s ease}
#play.is-active{display:grid;place-items:center}
.play-inner{width:100%;max-width:420px;display:flex;flex-direction:column;align-items:center;gap:14px}
.play-char{width:150px;height:150px;animation:bob 1.4s ease-in-out infinite;position:relative;overflow:visible}
.play-char img{width:100%;height:100%;object-fit:contain;
  filter:drop-shadow(2.5px 0 0 #fff) drop-shadow(-2.5px 0 0 #fff) drop-shadow(0 2.5px 0 #fff) drop-shadow(0 -2.5px 0 #fff) drop-shadow(2px 2px 0 #fff) drop-shadow(-2px 2px 0 #fff) drop-shadow(2px -2px 0 #fff) drop-shadow(-2px -2px 0 #fff) drop-shadow(0 8px 12px rgba(0,0,0,.35))}
/* 音符（画面オフ時） */
.mu-note{position:absolute;font-style:normal;pointer-events:none;
  color:#ffd9a8;text-shadow:0 2px 6px rgba(0,0,0,.35);line-height:1;
  font-family:'M PLUS Rounded 1c',sans-serif}
@keyframes noteWave{
  0%,100%{transform:translateY(0) rotate(var(--nr,0deg)) scale(1)}
  50%{transform:translateY(-7px) rotate(calc(var(--nr,0deg) + 8deg)) scale(1.1)}
}
.mu-note.n1{font-size:24px;top:-20px;left:-26px;--nr:-12deg;animation:noteWave 1.6s ease-in-out infinite;animation-delay:.0s}
.mu-note.n2{font-size:20px;top:-12px;right:-28px;--nr: 10deg;animation:noteWave 1.9s ease-in-out infinite;animation-delay:.5s}
.mu-note.n3{font-size:17px;bottom: 4px;left:-28px;--nr: -8deg;animation:noteWave 1.7s ease-in-out infinite;animation-delay:.9s}
.mu-note.n4{font-size:22px;bottom: -6px;right:-26px;--nr: 15deg;animation:noteWave 2.0s ease-in-out infinite;animation-delay:.3s}
.mu-note.n5{font-size:15px;top: 26px;left:-32px;--nr:-20deg;animation:noteWave 1.5s ease-in-out infinite;animation-delay:1.3s}
/* 「画面を消す（歌だけ）」＝映像だけ隠して音は継続 */
#video-wrap.is-off{height:0;opacity:0;overflow:hidden;margin:0;pointer-events:none}
.play-foot{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:2px}
.play-screen .btn-ghost{color:var(--brush-sub)}