/* ===== MOKOMOKO 森林 · 心理測驗 PWA ===== */
:root{
  --cream:#f1e8d2;
  --cream-d:#e7dabb;
  --green:#6f8f5f;
  --green-d:#566f49;
  --ink:#4a4031;
  --wood:#e3cf8f;
  --wood-d:#c9ad63;
  --shadow:0 10px 30px rgba(74,64,49,.22);
}

*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{
  font-family:"PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(125% 85% at 50% 8%, #f7f0de 0%, var(--cream) 42%, #d4d8c2 100%);
  overflow:hidden;
  position:fixed;
  inset:0;
  width:100%;
  -webkit-user-select:none;user-select:none;
  touch-action:manipulation;
}

#app{position:fixed;inset:0;}

/* ---- 畫面切換 ---- */
.screen{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;
  transition:opacity .5s ease;
  pointer-events:none;
}
.screen.active{opacity:1;visibility:visible;pointer-events:auto;}

/* ---- 舞台（保持各圖原比例、完整不裁切） ---- */
.frame{
  position:relative;
  width:min(100vw, calc(100dvh * var(--ratio)));
  height:min(100dvh, calc(100vw / var(--ratio)));
  aspect-ratio:var(--ratio);
}
.frame .bg{
  width:100%;height:100%;
  object-fit:cover;display:block;
  border-radius:16px;
  box-shadow:0 14px 36px rgba(74,64,49,.20), 0 4px 12px rgba(74,64,49,.12);
  -webkit-user-drag:none;
  transition:filter .3s ease;
}

/* ---- 透明點擊區（封面/前言/揭曉：整張可點） ---- */
.tap-zone{
  position:absolute;inset:0;
  background:transparent;border:0;
  cursor:pointer;
}

/* ---- 品牌浮水印（每頁圖片右下角小商標，半透明白底圓角章） ---- */
.brand-mark{
  position:absolute;right:2.6%;top:2.4%;
  width:min(5.75%,23px);height:auto;
  padding:2px 2px 1px;border-radius:6px;
  background:rgba(255,255,255,.5);
  box-shadow:0 1px 3px rgba(74,64,49,.12);
  opacity:.6;
  z-index:5;pointer-events:none;-webkit-user-drag:none;
  display:block;
}

/* ===== 題目選項 ===== */
/* 三個選項卡片是各自獨立的全幅 PNG（卡片在自己的位置、其餘透明），
   疊在題目圖上與原卡片完全對齊。選取時只亮起該張、其餘隨底圖壓暗。 */
.opt{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;display:block;
  -webkit-user-drag:none;
  opacity:0;pointer-events:none;
  transition:opacity .28s ease, filter .28s ease, transform .18s ease;
}
/* 選取：沿卡片形狀描一圈白色外框（疊多層細白 drop-shadow 形成清晰白線）＋ 一層柔光 */
.opt.selected{
  opacity:1;
  filter:
    drop-shadow(2px 0 0 #fff) drop-shadow(-2px 0 0 #fff)
    drop-shadow(0 2px 0 #fff) drop-shadow(0 -2px 0 #fff)
    drop-shadow(1.4px 1.4px 0 #fff) drop-shadow(-1.4px 1.4px 0 #fff)
    drop-shadow(1.4px -1.4px 0 #fff) drop-shadow(-1.4px -1.4px 0 #fff)
    drop-shadow(0 0 7px rgba(255,255,255,.5));
}
/* 有選擇時：題目底圖（含三張卡片）輕微壓暗即可，白色外框負責凸顯被選的那張 */
#quizFrame.has-sel .bg{filter:brightness(.78) saturate(.96);}

/* 透明點擊熱區（top/height 由 JS 依各題卡片位置設定） */
.hot{
  position:absolute;left:4%;width:92%;
  background:transparent;border:0;
  cursor:pointer;border-radius:18px;z-index:3;
  transition:background .15s ease;
}
.hot:active{background:rgba(111,143,95,.14);}

/* ---- 題目畫面：圖在上、操作列在下（直向） ---- */
#screen-quiz{
  flex-direction:column;justify-content:center;gap:6px;
  padding-bottom:calc(8px + env(safe-area-inset-bottom));
}
#screen-quiz .frame{
  flex:0 0 auto;
  --availH:calc(100dvh - 110px - env(safe-area-inset-bottom));
  width:min(100vw, calc(var(--availH) * var(--ratio)));
  height:min(var(--availH), calc(100vw / var(--ratio)));
  max-height:var(--availH);
}

/* ---- 操作列：往回走（左）＋ 繼續前進（右，選好才浮現） ---- */
.quiz-bar{
  flex:0 0 auto;
  height:96px;width:min(100vw,calc(100dvh*0.6667));
  display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;
}
.back-btn,.next-btn{
  background:none;border:0;padding:0;cursor:pointer;
  filter:drop-shadow(0 6px 10px rgba(74,64,49,.28));
  transition:transform .12s ease, filter .12s ease, opacity .3s ease;
}
.back-btn img,.next-btn img{display:block;-webkit-user-drag:none;}
.back-btn img{width:min(34vw,150px);}
.next-btn img{width:min(46vw,210px);}
.back-btn:active,.next-btn:active{transform:scale(.96);filter:brightness(.96);}
/* 預設狀態：往回走第一題隱藏；繼續前進選好才出現 */
.back-btn{opacity:0;pointer-events:none;}
.next-btn{opacity:0;pointer-events:none;transform:translateY(8px);animation:none;}
.quiz-bar.can-back .back-btn{opacity:1;pointer-events:auto;}
.quiz-bar.can-next .next-btn{opacity:1;pointer-events:auto;transform:none;animation:bob2 2.2s ease-in-out infinite;}

/* ---- 木牌按鈕圖（前言 開始散步） ---- */
.sign{
  position:absolute;left:50%;bottom:3%;
  transform:translateX(-50%);
  width:64%;max-width:300px;
  pointer-events:none;
  filter:drop-shadow(0 6px 10px rgba(74,64,49,.28));
  animation:bob 2.4s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translateX(-50%) translateY(0);}50%{transform:translateX(-50%) translateY(-6px);}}

/* ---- 封面提示 ---- */
.tap-hint{
  position:absolute;left:50%;bottom:2.5%;
  transform:translateX(-50%);
  font-size:13px;color:rgba(74,64,49,.6);
  letter-spacing:1px;
  animation:fade 2s ease-in-out infinite;
  pointer-events:none;white-space:nowrap;
}
@keyframes fade{0%,100%{opacity:.35;}50%{opacity:.85;}}

/* ---- 進度 ---- */
.progress{
  position:fixed;top:0;left:0;right:0;height:5px;
  background:rgba(86,111,73,.15);z-index:20;
}
.progress span{
  display:block;height:100%;width:14%;
  background:linear-gradient(90deg,var(--green),#9bbf7e);
  border-radius:0 4px 4px 0;
  transition:width .45s cubic-bezier(.3,.8,.3,1);
}
.qcount{
  position:fixed;top:12px;right:14px;z-index:20;
  font-size:13px;font-weight:600;color:var(--green-d);
  background:rgba(255,255,255,.65);
  padding:3px 11px;border-radius:999px;
  backdrop-filter:blur(4px);
  box-shadow:0 2px 6px rgba(74,64,49,.12);
}

/* ---- 揭曉畫面 ---- */
.reveal-inner{
  display:flex;flex-direction:column;align-items:center;
  gap:26px;padding:30px;text-align:center;
}
.reveal-text{
  font-size:clamp(19px,5.4vw,26px);line-height:2;color:var(--green-d);
  font-weight:600;letter-spacing:1px;
}
.sign-wrap{position:relative;display:inline-block;margin-top:6px;}
.sign-static{
  display:block;width:min(64vw,280px);
  filter:drop-shadow(0 6px 10px rgba(74,64,49,.28));
  animation:bob2 2.2s ease-in-out infinite;
}
@keyframes bob2{0%,100%{transform:translateY(0);}50%{transform:translateY(-7px);}}
.sign-wrap .tap-zone{inset:-10% -6%;}

/* ---- 結果畫面 ---- */
#screen-result{
  flex-direction:column;gap:4px;
  padding-bottom:calc(86px + env(safe-area-inset-bottom));
}
#screen-result .frame{
  flex:0 1 auto;
  --availH:calc(100dvh - 110px - env(safe-area-inset-bottom));
  width:min(100vw, calc(var(--availH) * var(--ratio)));
  height:min(var(--availH), calc(100vw / var(--ratio)));
  max-height:var(--availH);
}
#screen-result .frame .bg{object-fit:contain;box-shadow:none;}
.actions{
  position:fixed;left:0;right:0;bottom:0;
  display:flex;gap:18px;justify-content:center;align-items:center;
  padding:10px 16px calc(12px + env(safe-area-inset-bottom));
  background:linear-gradient(to top, var(--cream) 55%, rgba(241,232,210,0));
  z-index:15;
}
.img-btn{
  background:none;border:0;padding:0;cursor:pointer;
  filter:drop-shadow(0 5px 9px rgba(74,64,49,.26));
  transition:transform .12s ease, filter .12s ease;
}
.img-btn img{display:block;width:min(42vw,180px);-webkit-user-drag:none;}
.img-btn:active{transform:scale(.96);filter:brightness(.96);}

/* ---- 載入畫面 ---- */
.loader{background:radial-gradient(120% 80% at 50% 0%, #f6efdc 0%, var(--cream) 60%, #dfe2cf 100%);}
.loader-inner{display:flex;flex-direction:column;align-items:center;gap:18px;}
.loader-paw{font-size:46px;animation:paw 1.3s ease-in-out infinite;}
@keyframes paw{0%,100%{transform:translateY(0) rotate(-6deg);}50%{transform:translateY(-10px) rotate(6deg);}}
.loader-text{color:var(--green-d);font-weight:600;letter-spacing:2px;}
.loader-bar{width:180px;height:7px;border-radius:99px;background:rgba(86,111,73,.18);overflow:hidden;}
.loader-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--green),#9bbf7e);transition:width .3s ease;}

/* ---- Toast ---- */
.toast{
  position:fixed;left:50%;bottom:104px;transform:translateX(-50%) translateY(20px);
  background:rgba(74,64,49,.92);color:#fff;font-size:14px;
  padding:10px 18px;border-radius:999px;z-index:50;
  opacity:0;pointer-events:none;transition:opacity .25s ease, transform .25s ease;
  white-space:nowrap;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---- 版權標示（每個畫面底部，小字常駐） ---- */
.copyright{
  position:fixed;left:0;right:0;
  bottom:calc(4px + env(safe-area-inset-bottom));
  text-align:center;
  font-size:9px;letter-spacing:.6px;line-height:1;
  color:rgba(74,64,49,.5);
  text-shadow:0 0 3px rgba(255,255,255,.6);
  z-index:60;pointer-events:none;
}

/* 進場淡入 */
.screen.active .frame,.screen.active .reveal-inner{animation:rise .55s ease;}
@keyframes rise{from{opacity:0;transform:translateY(14px) scale(.99);}to{opacity:1;transform:none;}}