:root{
  --ink:#0f172a;--muted:#475569;--line:#e2e8f0;
  --wc-blue:#1e3a8a;--wc-blue2:#2563eb;--wc-red:#dc2626;
  --wc-gold:#fbbf24;--wc-gold2:#f59e0b;
  --card:rgba(255,255,255,.98);--shadow:0 14px 40px rgba(2,6,23,.34);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;}
body{
  font-family:"Segoe UI",Inter,"Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;
  color:var(--ink);background:#04060c;overflow:hidden;
  -webkit-tap-highlight-color:transparent;user-select:none;
}
#app{position:fixed;inset:0;}
.screen{position:absolute;inset:0;display:none;flex-direction:column;}
.screen.active{display:flex;}
.ribbon{height:6px;background:linear-gradient(90deg,var(--wc-red) 0 33%,#fff 33% 66%,var(--wc-blue) 66% 100%);}
button{font-family:inherit;cursor:pointer;border:none;}
.btn{background:linear-gradient(180deg,var(--wc-gold),var(--wc-gold2));color:#3a2a00;font-weight:800;border-radius:14px;padding:13px 24px;font-size:16px;box-shadow:0 8px 20px rgba(245,158,11,.4);transition:transform .08s;}
.btn:active{transform:translateY(2px);}
.btn.ghost{background:rgba(255,255,255,.12);color:#e2e8f0;border:1px solid rgba(255,255,255,.25);box-shadow:none;}
.btn.blue{background:linear-gradient(180deg,#3b82f6,#1e3a8a);color:#fff;box-shadow:0 6px 16px rgba(30,58,138,.4);}

/* ---- boot / loading ---- */
#boot{position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:#fff;
  background:radial-gradient(1000px 600px at 50% 30%,#12305e,#04060c);}
#boot .plane{font-size:46px;animation:fly 3.4s ease-in-out infinite;}
#boot .bar{width:220px;height:6px;background:rgba(255,255,255,.15);border-radius:999px;overflow:hidden;}
#boot .bar i{display:block;height:100%;width:30%;background:var(--wc-gold);border-radius:999px;animation:load 1.2s ease-in-out infinite;}
#boot .msg{font-size:13px;color:#cbd5e1;} #boot .err{color:#fca5a5;max-width:520px;text-align:center;font-size:13px;line-height:1.6;}
@keyframes load{0%{margin-left:-30%}100%{margin-left:100%}}

/* ---- title ---- */
#title{align-items:center;justify-content:center;text-align:center;color:#fff;gap:6px;padding:24px;
  background:radial-gradient(1200px 700px at 50% -10%,#1e3a8a 0%,#0b1220 62%,#04060c 100%);}
#title .logo{font-size:13px;letter-spacing:6px;color:var(--wc-gold);font-weight:800;}
#title h1{font-size:clamp(26px,6vw,56px);margin:6px 0;text-shadow:0 4px 24px rgba(0,0,0,.55);}
#title .sub{color:#cbd5e1;max-width:640px;font-size:15px;line-height:1.7;}
#title .badges{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin:14px 0;}
#title .pill{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:8px 14px;border-radius:999px;font-size:13px;}
.plane{font-size:52px;animation:fly 4s ease-in-out infinite;display:inline-block;}
@keyframes fly{0%,100%{transform:translateY(0) rotate(-6deg)}50%{transform:translateY(-12px) rotate(4deg)}}

/* ---- scene / FPV ---- */
#scene{color:#fff;}
#fpv{position:absolute;inset:0;width:100%;height:100%;display:block;}
.vignette{position:absolute;inset:0;pointer-events:none;box-shadow:inset 0 0 200px rgba(0,0,0,.6);}
.fade{position:absolute;inset:0;background:#000;opacity:0;pointer-events:none;transition:opacity .8s;z-index:30;}
.fade.show{opacity:1;}
.cine{position:absolute;left:0;right:0;bottom:16%;text-align:center;color:#fff;pointer-events:none;z-index:31;padding:0 20px;}
.cine .big{font-size:clamp(20px,3.6vw,34px);font-weight:800;text-shadow:0 3px 18px rgba(0,0,0,.7);}
.cine .small{font-size:14px;color:#cbd5e1;margin-top:6px;}
.scenetop{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-start;padding:12px 14px;pointer-events:none;z-index:20;}
.locband{pointer-events:auto;background:rgba(2,6,23,.7);border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:8px 12px;backdrop-filter:blur(6px);}
.locband .en{font-weight:800;font-size:14px;} .locband .zh{font-size:12px;color:#cbd5e1;}
.scenetop .rt{display:flex;gap:8px;pointer-events:auto;}
.iconbtn{background:rgba(2,6,23,.7);border:1px solid rgba(255,255,255,.18);color:#fff;border-radius:12px;padding:8px 11px;font-weight:700;font-size:13px;}
.lookhint{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:rgba(255,255,255,.4);font-size:12px;pointer-events:none;z-index:20;}

/* ---- dialogue panel (AVG) ---- */
.panel{position:absolute;left:0;right:0;bottom:0;padding:14px;pointer-events:none;z-index:20;}
.panel .inner{pointer-events:auto;max-width:840px;margin:0 auto;background:rgba(6,12,26,.93);border:1px solid rgba(255,255,255,.16);border-radius:18px;box-shadow:var(--shadow);backdrop-filter:blur(10px);overflow-y:auto;max-height:86vh;}
/* reading passage: fixed LEFT map + RIGHT scrolling text (never stacks tall) */
.passgrid{display:grid;grid-template-columns:200px 1fr;gap:14px;align-items:start;margin-top:6px;}
.passmap svg{width:100%;height:auto;max-height:150px;display:block;border-radius:10px;}
.passtext{font-family:inherit !important;line-height:1.6;font-size:13px;max-height:30vh;overflow:auto;margin:0 !important;}
@media(max-width:620px){ .passgrid{grid-template-columns:1fr;} .passmap svg{max-height:120px;} .passtext{max-height:26vh;} }
/* keep any other in-panel graphic from blowing the panel height */
.panel .body svg{max-height:150px;width:auto;max-width:100%;}
.speaker{display:flex;align-items:center;gap:10px;padding:10px 16px;background:rgba(37,99,235,.28);border-bottom:1px solid rgba(255,255,255,.12);}
.speaker .who{font-weight:900;color:var(--wc-gold);}
.speaker .role{font-size:12px;color:#cbd5e1;}
.speaker .spk{margin-left:auto;background:rgba(255,255,255,.14);border-radius:10px;padding:6px 10px;color:#fff;font-size:13px;}
.body{padding:16px;}
.line{font-size:18px;line-height:1.5;min-height:28px;}
.line .en{font-weight:700;}
.transl{color:#93c5fd;font-size:14px;margin-top:6px;display:none;}
.transl.show{display:block;}
.choices{display:flex;flex-direction:column;gap:9px;margin-top:14px;}
.choice{text-align:left;background:rgba(255,255,255,.08);border:2px solid rgba(255,255,255,.16);color:#fff;border-radius:12px;padding:11px 14px;font-size:15px;transition:.12s;}
.choice:hover{border-color:var(--wc-blue2);background:rgba(37,99,235,.22);}
.choice.correct{background:rgba(22,163,74,.35);border-color:#22c55e;}
.choice.wrong{background:rgba(220,38,38,.3);border-color:#ef4444;}
.choice .sub{display:block;font-size:12px;color:#cbd5e1;margin-top:2px;}
.fb{margin-top:12px;font-size:14px;padding:10px 12px;border-radius:12px;display:none;}
.fb.show{display:block;} .fb.ok{background:rgba(22,163,74,.25);color:#bbf7d0;} .fb.no{background:rgba(220,38,38,.22);color:#fecaca;}
.foot{display:flex;justify-content:space-between;align-items:center;margin-top:12px;gap:10px;flex-wrap:wrap;}
.foot .prog{font-size:12px;color:#94a3b8;}
.next{background:linear-gradient(180deg,var(--wc-gold),var(--wc-gold2));color:#3a2a00;font-weight:800;border-radius:12px;padding:10px 18px;}

/* sign / ticket */
.sign{background:#0b1220;border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px;margin:6px 0 12px;font-family:"Courier New",monospace;}
.sign .row{display:flex;justify-content:space-between;border-bottom:1px dashed rgba(255,255,255,.2);padding:6px 0;font-size:15px;}
.sign .row b{color:var(--wc-gold);}
.blank{display:inline-block;min-width:70px;border-bottom:2px solid var(--wc-gold);text-align:center;color:var(--wc-gold);}

/* drag & drop */
.dnd{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:6px;}
.pool,.slots{display:flex;flex-direction:column;gap:8px;}
.word{background:var(--wc-gold);color:#3a2a00;border-radius:10px;padding:9px 12px;font-weight:800;text-align:center;cursor:grab;}
.word.used{opacity:.35;pointer-events:none;}
.slot{border:2px dashed rgba(255,255,255,.35);border-radius:10px;padding:9px 12px;min-height:44px;display:flex;justify-content:space-between;align-items:center;gap:8px;}
.slot .zh{color:#cbd5e1;font-size:14px;}
.slot.filled{border-style:solid;border-color:#22c55e;background:rgba(34,197,94,.14);}
.slot .drop{font-weight:800;color:var(--wc-gold);}
.slot.over{background:rgba(37,99,235,.2);}

/* physics mini */
.phyctrl{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:6px;}
.slider label{display:flex;justify-content:space-between;font-size:12px;color:#cbd5e1;margin-bottom:4px;}
.slider label b{color:var(--wc-gold);} .slider input{width:100%;accent-color:var(--wc-gold2);}
.readout{font-size:13px;color:#cbd5e1;margin-top:8px;} .readout b{color:#fff;}

/* overlays */
.overlay{position:absolute;inset:0;background:rgba(2,6,23,.8);display:none;align-items:center;justify-content:center;padding:18px;z-index:50;backdrop-filter:blur(3px);}
.overlay.active{display:flex;}
.modal{background:var(--card);color:var(--ink);border-radius:20px;max-width:560px;width:100%;max-height:88vh;overflow:auto;box-shadow:var(--shadow);}
.modal .mh{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;background:#fff;border-radius:20px 20px 0 0;}
.modal .mh h2{margin:0;font-size:20px;} .modal .mb{padding:18px 20px;}
.x{background:#f1f5f9;border-radius:10px;padding:6px 12px;font-weight:800;color:#334155;}
.stampbig{text-align:center;}
.stampwrap{position:relative;height:120px;display:flex;align-items:center;justify-content:center;margin-bottom:4px;}
.stampbig .em{font-size:64px;display:inline-block;position:relative;z-index:2;animation:stampIn .5s cubic-bezier(.2,1.5,.3,1) both;}
.stampwrap .ring{position:absolute;width:118px;height:118px;border:6px solid var(--wc-red);border-radius:50%;opacity:0;z-index:1;animation:ringIn .45s ease-out .06s both;}
.stampwrap .ring2{position:absolute;width:150px;height:150px;border:3px dashed var(--wc-red);border-radius:50%;opacity:0;z-index:1;animation:ringIn .5s ease-out .12s both;}
@keyframes stampIn{0%{transform:scale(2.7) rotate(-22deg);opacity:0}55%{transform:scale(.86) rotate(5deg);opacity:1}100%{transform:scale(1) rotate(0)}}
@keyframes ringIn{0%{transform:scale(2.1);opacity:0}70%{opacity:.9}100%{transform:scale(1);opacity:.85}}
.passport{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;}
.pcard{background:linear-gradient(160deg,#1e3a8a,#2563eb);color:#fff;border-radius:14px;padding:14px;text-align:center;border:2px solid var(--wc-gold);}
.pcard.empty{background:#e2e8f0;color:#94a3b8;border-color:#cbd5e1;}
.pcard .em{font-size:26px;} .pcard .nm{font-weight:800;font-size:12px;margin-top:4px;}
.toast{position:absolute;left:50%;bottom:120px;transform:translateX(-50%);background:rgba(2,6,23,.92);color:#fff;padding:12px 18px;border-radius:14px;font-weight:700;z-index:60;opacity:0;transition:.3s;border:1px solid rgba(255,255,255,.15);}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-8px);}
.hint{color:#64748b;font-size:12px;}