/* Alur Mulai Kuis: gaya kertas/ubin yang sama dengan auth.html */
:root{--ink:#163456;--paper:#F3F9FD;--card:#fff;--accent:#50BEF1;--ok:#1E6B3A;--err:#B3261E;
--f-d:'Montserrat','Trebuchet MS',sans-serif;--f-b:'Instrument Sans','Segoe UI',system-ui,sans-serif;--ease:cubic-bezier(.7,0,.2,1)}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;padding:1rem;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.55 var(--f-b);overflow-x:hidden}
h1,h2{font-family:var(--f-d);line-height:1.05;margin:0;letter-spacing:-.02em}h1{font-size:2rem}
a{color:inherit}button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.home{position:fixed;top:1rem;left:1rem;display:flex;align-items:center;gap:.5rem;font:800 1.4rem var(--f-d);text-decoration:none;z-index:5}
.home b{color:var(--accent)}.home img{height:34px;mix-blend-mode:multiply}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 1.4rem;border:2px solid var(--ink);border-radius:10px;background:var(--card);font-weight:600;text-decoration:none;cursor:pointer;box-shadow:4px 4px 0 var(--ink);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.btn.pri{background:var(--accent)}.btn[disabled]{opacity:.6;cursor:wait}
.spin::after{content:"";width:16px;height:16px;margin-left:.6rem;border:3px solid currentColor;border-right-color:transparent;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(1turn)}}
.link{background:none;border:0;padding:.5rem 0;min-height:44px;text-decoration:underline;font-weight:600;cursor:pointer}
/* ubin latar */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg i{position:absolute;display:grid;place-items:center;font:800 1.5rem var(--f-d);border:2px solid var(--ink);animation:fl 7s ease-in-out infinite alternate}
.bg .a{background:var(--accent);opacity:.38}.bg .k{background:var(--ink);color:var(--paper);opacity:.14}.bg .w{background:var(--card);opacity:.7}
@keyframes fl{to{transform:translateY(-26px) rotate(12deg)}}
/* kartu + perpindahan halaman */
.card{position:relative;width:min(560px,100%);min-height:540px;overflow:hidden;background:var(--card);border:2px solid var(--ink);border-radius:20px;box-shadow:10px 10px 0 var(--ink);animation:pgIn .6s cubic-bezier(.2,.8,.2,1) both}
body.out .card{animation:pgOut .42s cubic-bezier(.7,0,.8,.2) forwards}
@keyframes pgIn{from{opacity:0;transform:translateX(70px) scale(.97)}}
@keyframes pgOut{to{opacity:0;transform:translateX(-70px) scale(.97)}}
.view{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;padding:2rem clamp(1.2rem,5vw,2.6rem);opacity:0;visibility:hidden;transform:translateX(50px);transition:opacity .35s,transform .55s var(--ease),visibility 0s .55s}
.view.on{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.view.before{transform:translateX(-50px)}
.sub{margin:.5rem 0 1.4rem}
/* dua pilihan */
.opts{display:grid;gap:1rem}
.opt{display:flex;align-items:center;gap:1rem;padding:1rem 1.2rem;text-align:left;background:var(--paper);border:2px solid var(--ink);border-radius:14px;box-shadow:4px 4px 0 var(--ink);cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}
.opt:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);background:var(--accent)}
.opt:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.opt .ic{flex:none;display:grid;place-items:center;width:56px;height:56px;border:2px solid var(--ink);border-radius:12px;background:var(--card);transition:transform .4s var(--ease)}
.opt:hover .ic{transform:rotate(-8deg) scale(1.08)}.ic svg{width:30px;height:30px}
.opt b{display:block;font:800 1.2rem var(--f-d)}.opt span{font-size:.95rem}
/* pemindai */
.scan{position:relative;flex:1 1 auto;width:100%;min-height:300px;margin:0 0 .8rem;container-type:size;--f:min(80cqw,80cqh);background:var(--ink);border-radius:16px;overflow:hidden}
.scan video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:none}.scan video.flip{transform:scaleX(-1)}
.scan::before{content:"";position:absolute;left:50%;top:50%;width:var(--f);height:var(--f);margin:calc(var(--f)/-2) 0 0 calc(var(--f)/-2);border:3px solid var(--accent);border-radius:16px;animation:pulse 1.6s ease-in-out infinite}
.scan::after{content:"";position:absolute;left:50%;width:var(--f);margin-left:calc(var(--f)/-2);top:calc(50% - var(--f)/2);height:3px;background:var(--accent);box-shadow:0 0 14px var(--accent);animation:line 2s ease-in-out infinite alternate}
@keyframes line{to{top:calc(50% + var(--f)/2 - 3px)}}@keyframes pulse{50%{transform:scale(.96);opacity:.6}}
/* sel PIN */
.pin{display:flex;gap:.5rem;justify-content:center;margin:.6rem 0}
.pin input,.fld input{width:100%;min-height:48px;padding:0 .9rem;background:var(--paper);border:2px solid var(--ink);border-radius:10px}
.pin input{width:50px;min-height:62px;padding:0;text-align:center;font:800 1.6rem var(--f-d);transition:transform .15s,background .15s}
.pin input:focus{transform:translateY(-4px);background:#fff}
.pin.shake{animation:shk .4s}@keyframes shk{20%,60%{transform:translateX(-8px)}40%,80%{transform:translateX(8px)}}
.fld{margin:.4rem 0}.fld label{display:block;font-weight:600;margin:.6rem 0 .25rem}
[aria-invalid=true]{border-color:var(--err)!important;background:#FBE6E1!important}
.msg{min-height:1.5em;margin:.4rem 0;font-weight:600;text-align:center}.msg.bad{color:#A12712}.msg.good{color:var(--ok)}
form .btn{width:100%;margin-top:1rem}
.back{align-self:flex-start;margin-bottom:.6rem}
/* sukses */
.ok{position:absolute;inset:0;z-index:4;display:grid;place-content:center;justify-items:center;gap:.6rem;background:var(--accent);opacity:0;visibility:hidden;transition:opacity .3s}
.card.done .ok{opacity:1;visibility:visible}
.ok i{display:grid;place-items:center;width:96px;height:96px;border:3px solid var(--ink);border-radius:24px;background:#fff;font:800 3rem var(--f-d);transform:scale(0) rotate(-30deg)}
.card.done .ok i{animation:pop .6s .1s var(--ease) forwards}
@keyframes pop{to{transform:none}}
.pill{display:inline-block;padding:.2rem .8rem;border:2px solid var(--ink);border-radius:99px;background:var(--paper);font:800 .95rem var(--f-d);letter-spacing:.08em}
/* ruang tunggu */
.wait{align-items:center;text-align:center}
.dots{display:flex;gap:.5rem;justify-content:center;margin:1rem 0}
.dots i{width:16px;height:16px;border:2px solid var(--ink);border-radius:5px;background:var(--accent);animation:bn 1.2s ease-in-out infinite}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}
@keyframes bn{50%{transform:translateY(-12px) rotate(45deg)}}
.who{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;max-height:264px;overflow:auto;padding:.4rem;width:100%}
.who span{padding:.25rem .8rem;border:2px solid var(--ink);border-radius:99px;background:var(--paper);font-weight:600;font-size:.95rem;animation:in .5s var(--ease) both}
.who span.me{background:var(--accent)}@keyframes in{from{opacity:0;transform:scale(.3) translateY(14px)}}
@media(max-width:600px){.home{position:static;margin-bottom:1rem}body{align-content:start;place-items:start center}.card{min-height:560px;box-shadow:6px 6px 0 var(--ink)}.pin input{width:42px;min-height:54px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* tombol mata (lihat/sembunyikan password) */
.pw{position:relative}.pw input{padding-right:3.2rem}
.eye{position:absolute;top:50%;right:.35rem;transform:translateY(-50%);display:grid;place-items:center;width:44px;height:44px;padding:0;background:none;border:0;border-radius:8px;color:var(--ink);cursor:pointer}
.eye:hover{background:rgba(22,52,86,.08)}
.eye svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.eye .off{display:none}.eye[aria-pressed=true] .on{display:none}.eye[aria-pressed=true] .off{display:block}

/* layar scan QR: kartu lebih tinggi, area kamera mengisi ruang yang tersisa */
.card{transition:min-height .4s var(--ease)}
.card[data-view=vQr]{min-height:740px}
.card[data-view=vQr] #vQr{justify-content:flex-start;padding-top:1.2rem;padding-bottom:1.4rem}
#vQr .sub{margin:.3rem 0 .9rem}#vQr .msg{margin:0 0 .4rem}
@media(max-width:600px){
  .card[data-view=vQr]{min-height:max(560px,calc(100svh - 6.5rem))}
  .card[data-view=vQr] #vQr{padding:.8rem .9rem 1rem}
  #vQr h1{font-size:1.6rem}
  .scan{min-height:340px;border-radius:14px}
}

.flipbtn{position:absolute;right:.6rem;bottom:.6rem;z-index:2;display:flex;align-items:center;gap:.4rem;min-width:44px;height:44px;padding:0 .8rem;font-weight:600;border:2px solid var(--ink);border-radius:12px;background:var(--card);color:var(--ink);cursor:pointer}
.flipbtn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.flipbtn[aria-pressed=true]{background:var(--accent)}

.scan::before,.scan::after{z-index:1;pointer-events:none}