:root{
  --cream:#F3EBD8; --cream-2:#EADFC6; --paper:#FBF6EA;
  --ink:#2B2622; --ink-soft:#6B6158;
  --mustard:#E2B33C; --mustard-deep:#C99520;
  --tomato:#C8452F; --olive:#5E6B3F;
  --radius:22px;
  --font-ui:'Fredoka',ui-rounded,system-ui,sans-serif;
  --font-read:'Andika',ui-rounded,system-ui,sans-serif;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--cream);
  color:var(--ink);
  font-family:var(--font-ui);
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
  -webkit-tap-highlight-color:transparent;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
svg{display:block}
:focus-visible{outline:3px solid var(--tomato);outline-offset:3px;border-radius:12px}

#app{position:relative;height:100dvh;width:100%}
.screen{position:absolute;inset:0;display:flex;opacity:0;visibility:hidden;transition:opacity .45s var(--ease),visibility .45s}
.screen.is-active{opacity:1;visibility:visible}

/* ---------- Welcome ---------- */
#welcome{padding:clamp(16px,4vw,48px);overflow:auto}
.welcome-inner{margin:auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,72px);align-items:center;max-width:1120px;width:100%}
.welcome-art{position:relative;aspect-ratio:1;max-height:78dvh;justify-self:center;width:100%}
.welcome-art img{width:100%;height:100%;object-fit:contain;border-radius:var(--radius);
  animation:bob 5s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-6px) rotate(-.4deg)}}
.brand{display:flex;align-items:center;gap:10px;color:var(--olive);font-weight:600;font-size:15px;letter-spacing:.02em;margin-bottom:18px}
.logo{width:30px;height:30px}
.welcome-copy h1{font-weight:700;font-size:clamp(40px,5.6vw,72px);line-height:.98;letter-spacing:-.01em;text-transform:uppercase}
.lede{font-family:var(--font-read);font-size:clamp(17px,1.5vw,20px);line-height:1.5;color:var(--ink-soft);margin:18px 0 28px;max-width:34ch}
.modes{display:grid;gap:12px;max-width:420px}
.mode{display:flex;align-items:center;gap:16px;text-align:left;padding:16px 20px;border-radius:18px;background:var(--paper);
  border:2px solid var(--ink);box-shadow:0 4px 0 var(--ink);transition:transform .15s var(--ease),box-shadow .15s var(--ease)}
.mode svg{width:28px;height:28px;flex:none}
.mode strong{display:block;font-size:19px;font-weight:600}
.mode small{display:block;font-family:var(--font-read);font-size:14px;color:var(--ink-soft);margin-top:2px;line-height:1.3}
.mode:hover{transform:translateY(-2px);box-shadow:0 6px 0 var(--ink)}
.mode:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.mode-primary{background:var(--mustard)}
.mode-primary small{color:#4a3a14}
.hint{margin-top:20px;font-size:14px;color:var(--ink-soft)}

/* ---------- Reader ---------- */
#reader{flex-direction:column}
.topbar{display:flex;align-items:center;gap:14px;padding:12px clamp(12px,3vw,28px);padding-top:max(12px,env(safe-area-inset-top))}
.icon-btn{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex:none;transition:background .2s}
.icon-btn svg{width:24px;height:24px}
.icon-btn:hover{background:var(--cream-2)}
.icon-btn[aria-pressed="false"]{opacity:.45}
.progress{flex:1;display:flex;gap:5px;align-items:center;justify-content:center}
.dot{flex:1;max-width:34px;height:8px;border-radius:99px;background:var(--cream-2);transition:background .3s,transform .3s}
.dot.done{background:var(--mustard-deep)}
.dot.now{background:var(--tomato);transform:scaleY(1.25)}

.stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;gap:clamp(4px,2vw,28px);padding:0 clamp(6px,2vw,24px)}
.book{flex:1;min-height:0;height:100%;max-width:1180px;display:flex;align-items:center;justify-content:center;gap:clamp(16px,3vw,40px)}
.page-wrap{position:relative;width:min(calc(100dvh - 190px),calc(66vw - 210px));aspect-ratio:1;flex:none}
.page-wrap img{width:100%;height:100%;object-fit:contain;border-radius:var(--radius);user-select:none;-webkit-user-drag:none}
.page-wrap.out-l img{animation:outL .32s var(--ease) forwards}
.page-wrap.out-r img{animation:outR .32s var(--ease) forwards}
.page-wrap.in-l img{animation:inL .42s var(--ease)}
.page-wrap.in-r img{animation:inR .42s var(--ease)}
@keyframes outL{to{opacity:0;transform:translateX(-40px) rotate(-1.5deg)}}
@keyframes outR{to{opacity:0;transform:translateX(40px) rotate(1.5deg)}}
@keyframes inL{from{opacity:0;transform:translateX(40px) rotate(1.5deg)}}
@keyframes inR{from{opacity:0;transform:translateX(-40px) rotate(-1.5deg)}}

.words{width:min(34vw,420px);flex:none;font-family:var(--font-read);font-weight:700;font-size:clamp(22px,2.3vw,32px);line-height:1.45;
  background:var(--paper);border-radius:var(--radius);padding:clamp(20px,2.4vw,32px);border:2px solid var(--cream-2);transition:opacity .3s}
.words.hidden{opacity:0;pointer-events:none}
.words .line{display:block}
.words .line + .line{margin-top:.2em}
.w{display:inline-block;padding:0 .08em;margin:0 -.02em;border-radius:.25em;transition:background .12s,color .12s,transform .12s;cursor:pointer}
.w:hover{background:var(--cream-2)}
.w.on{background:var(--mustard);transform:translateY(-1px) scale(1.04)}
.w.said{color:var(--ink)}
.words.playing .w:not(.said):not(.on){color:#9c9184}
.words.big{font-size:clamp(34px,4vw,56px);line-height:1.15;text-align:center}

.turn{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--paper);border:2px solid var(--ink);box-shadow:0 3px 0 var(--ink);transition:transform .15s,opacity .2s}
.turn svg{width:26px;height:26px}
.turn:hover{transform:translateY(-2px)}
.turn:active{transform:translateY(2px);box-shadow:0 1px 0 var(--ink)}
.turn:disabled{opacity:0;pointer-events:none}
.turn-next.nudge{animation:nudge 1.2s ease-in-out infinite}
@keyframes nudge{50%{transform:translateX(5px);background:var(--mustard)}}

.controls{display:flex;justify-content:center;align-items:center;gap:clamp(18px,5vw,40px);padding:12px 16px;padding-bottom:max(14px,env(safe-area-inset-bottom))}
.ctrl{display:flex;flex-direction:column;align-items:center;gap:3px;font-size:13px;font-weight:600;color:var(--ink-soft);min-width:56px;padding:6px;border-radius:14px}
.ctrl svg{width:26px;height:26px;color:var(--ink)}
.ctrl:hover{background:var(--cream-2)}
.ctrl[aria-pressed="false"]{opacity:.45}
.ctrl-play{width:68px;height:68px;border-radius:50%;background:var(--tomato);color:#fff;justify-content:center;box-shadow:0 4px 0 #7f2a1c}
.ctrl-play:hover{background:#b83d29}
.ctrl-play svg{width:32px;height:32px;color:#fff}
.ctrl-play .i-pause{display:none}
.ctrl-play.is-playing .i-play{display:none}
.ctrl-play.is-playing .i-pause{display:block}
.ctrl-play.is-playing{animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 4px 0 #7f2a1c,0 0 0 10px rgba(200,69,47,.15)}}

/* ---------- End ---------- */
#end{align-items:center;justify-content:center;text-align:center;padding:24px}
.end-sign{position:relative;display:inline-block;background:#fff;padding:26px 36px 22px;border-radius:6px;transform:rotate(-2.5deg);
  box-shadow:0 10px 30px rgba(43,38,34,.12);margin-bottom:34px;font-family:var(--font-read)}
.sign-main{font-weight:700;font-size:clamp(28px,5vw,44px);color:var(--tomato);letter-spacing:.02em}
.sign-sub{font-size:clamp(18px,2.6vw,24px);color:var(--ink-soft);margin-top:4px}
.tape{position:absolute;top:-12px;width:70px;height:24px;background:rgba(226,179,60,.65)}
.tape-l{left:-14px;transform:rotate(-28deg)}
.tape-r{right:-14px;transform:rotate(26deg)}
.end-inner h2{font-size:clamp(44px,7vw,80px);font-weight:700;text-transform:uppercase;line-height:1}
.end-q{font-family:var(--font-read);font-size:20px;color:var(--ink-soft);margin:12px 0 28px}
.end-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.mode.small{padding:12px 20px}
.mode.small svg{width:22px;height:22px}
.credit{margin-top:28px;font-size:14px;color:var(--ink-soft)}
#end.is-active .end-sign{animation:drop .7s var(--ease)}
@keyframes drop{from{opacity:0;transform:translateY(-30px) rotate(-8deg)}}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .welcome-inner{grid-template-columns:1fr;gap:20px;text-align:center}
  .welcome-art{max-width:min(300px,36dvh)}
  .brand{justify-content:center}
  .lede{margin-left:auto;margin-right:auto}
  .modes{margin:0 auto}
  .book{flex-direction:column;gap:12px;justify-content:center}
  .page-wrap{height:auto;width:min(100%,calc(100dvh - 330px));max-height:none}
  .words{width:100%;max-width:560px;font-size:clamp(18px,4.8vw,24px);padding:14px 18px;text-align:center}
  .words.big{font-size:clamp(26px,7vw,40px)}
  .turn{display:none}
}
@media (max-width:860px) and (max-height:620px){ .page-wrap{width:min(100%,calc(100dvh - 280px))} }
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}