:root{
  --bg:#17181c; --fg:#f4f2ec; --muted:rgba(244,242,236,.62);
  --card:rgba(244,242,236,.07); --line:rgba(244,242,236,.38);
  --accent:#8be0c6; --accent-ink:#0d2a22; --err:#ff9b8a;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg:#f7f4ee; --fg:#1d1d1f; --muted:rgba(29,29,31,.62);
    --card:rgba(29,29,31,.05); --line:rgba(29,29,31,.35);
    --accent:#14715a; --accent-ink:#fff; --err:#b3361f;
  }
}
*{box-sizing:border-box;margin:0}
html,body{height:100%}
body{background:var(--bg);color:var(--fg);font-family:'IBM Plex Sans Arabic',system-ui,-apple-system,'Segoe UI',Tahoma,sans-serif;
  font-size:18px;line-height:1.7;overflow:hidden;-webkit-font-smoothing:antialiased}
button,input{font:inherit;color:inherit}
#bar{position:fixed;inset:0 0 auto 0;height:5px;background:var(--card);z-index:5}
#bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .45s cubic-bezier(.4,0,.2,1);margin-inline-start:0}
#top{position:fixed;top:14px;inset-inline:20px;display:flex;justify-content:space-between;font-size:14px;color:var(--muted);z-index:4;pointer-events:none}
#stage{height:100%;overflow-y:auto;display:flex}
.q{margin:auto;width:100%;max-width:760px;padding:76px 24px 120px}
.q.fwd{animation:fwd .42s cubic-bezier(.2,.7,.2,1)}
.q.back{animation:back .42s cubic-bezier(.2,.7,.2,1)}
@keyframes fwd{from{opacity:0;transform:translateY(46px)}to{opacity:1;transform:none}}
@keyframes back{from{opacity:0;transform:translateY(-46px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.q.fwd,.q.back{animation:none}#bar i{transition:none}}
.num{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:600;font-size:17px;margin-bottom:10px}
.num svg{width:16px;height:16px}
h1,h2{font-weight:600;line-height:1.5}
h2{font-size:clamp(23px,4.4vw,31px)}
h1{font-size:clamp(28px,6vw,42px);margin-bottom:18px}
.sub{color:var(--muted);margin-top:8px;font-size:17px}
.body{color:var(--muted);margin-top:14px;font-size:17px;max-width:62ch}
.body p+p{margin-top:12px}
.eyebrow{color:var(--accent);font-weight:600;font-size:15px;letter-spacing:.02em;margin-bottom:14px}
.opts{margin-top:26px;display:grid;gap:9px}
.opt{display:grid;gap:7px}
.optbtn{display:flex;align-items:center;gap:12px;width:100%;text-align:start;background:var(--card);border:1.5px solid var(--line);
  border-radius:9px;padding:10px 12px;cursor:pointer;transition:background .15s,border-color .15s,transform .1s}
.optbtn:hover{background:rgba(139,224,198,.14);border-color:var(--accent)}
.optbtn:active{transform:scale(.995)}
.optbtn:focus-visible,.btn:focus-visible,.nav button:focus-visible,.lk:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.key{flex:none;min-width:26px;height:26px;display:grid;place-items:center;border:1.5px solid var(--line);border-radius:5px;font-size:13px;font-weight:600;
  background:var(--bg);direction:ltr}
.lbl{flex:1;font-size:18px}
.tick{opacity:0;color:var(--accent-ink);font-weight:700}
.opt.on .optbtn{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.opt.on .key{background:var(--accent-ink);color:var(--accent);border-color:var(--accent-ink)}
.opt.on .tick{opacity:1}
.otherinp,.field{width:100%;background:transparent;border:0;border-bottom:2px solid var(--line);padding:8px 2px;font-size:clamp(22px,4.5vw,30px);outline:none;
  transition:border-color .2s;border-radius:0}
.otherinp{font-size:18px;border:1.5px solid var(--accent);border-radius:9px;padding:9px 12px;background:var(--card)}
.field:focus{border-color:var(--accent)}
.field::placeholder,.otherinp::placeholder{color:var(--muted);opacity:.7}
.fieldwrap{margin-top:30px;display:flex;align-items:baseline;gap:12px}
.unit{color:var(--muted);font-size:18px;white-space:nowrap}
.likert{margin-top:28px;display:grid;grid-template-columns:repeat(5,1fr);gap:9px}
.lk{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;text-align:center;background:var(--card);border:1.5px solid var(--line);
  border-radius:9px;padding:14px 4px 12px;cursor:pointer;transition:background .15s,border-color .15s;min-height:104px}
.lk:hover{background:rgba(139,224,198,.14);border-color:var(--accent)}
.lk b{font-size:26px;font-weight:600;line-height:1.2}
.lk span{font-size:14px;line-height:1.35;color:var(--muted)}
.lk.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.lk.on span{color:var(--accent-ink)}
.ends{display:flex;justify-content:space-between;margin-top:10px;font-size:14px;color:var(--muted)}
.yn{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.yn .opt{flex:1 1 180px}
.actions{margin-top:30px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--accent-ink);border:0;border-radius:9px;padding:11px 24px;
  font-weight:600;font-size:19px;cursor:pointer;transition:transform .1s,filter .15s}
.btn:hover{filter:brightness(1.07)}.btn:active{transform:scale(.98)}
.btn.ghost{background:transparent;color:var(--fg);border:1.5px solid var(--line)}
.hint{color:var(--muted);font-size:14px}
.hint kbd{font:inherit;font-weight:600;border:1px solid var(--line);border-radius:4px;padding:0 5px;margin-inline:2px}
.err{margin-top:14px;color:var(--err);font-size:16px;display:none;align-items:center;gap:8px;animation:fwd .25s}
.err.show{display:flex}
.nav{position:fixed;bottom:18px;inset-inline-start:18px;display:flex;gap:2px;z-index:5;border-radius:8px;overflow:hidden}
.nav button{width:42px;height:38px;background:var(--accent);color:var(--accent-ink);border:0;cursor:pointer;display:grid;place-items:center}
.nav button:disabled{opacity:.4;cursor:default}
.nav svg{width:18px;height:18px}
.brand{position:fixed;bottom:22px;inset-inline-end:20px;font-size:13px;color:var(--muted);z-index:4}
.center{text-align:center}
.spin{width:34px;height:34px;border-radius:50%;border:4px solid var(--card);border-top-color:var(--accent);animation:sp 1s linear infinite;margin:24px auto 0}
@keyframes sp{to{transform:rotate(360deg)}}
.check{width:64px;height:64px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;margin:0 auto 22px;font-size:34px}
@media (max-width:620px){
  body{font-size:17px}
  .q{padding:64px 18px 120px}
  .likert{grid-template-columns:1fr}
  .lk{flex-direction:row;justify-content:flex-start;gap:14px;min-height:0;padding:11px 14px;text-align:start}
  .lk b{font-size:20px;min-width:22px}.lk span{font-size:16px;color:inherit}
  .ends{display:none}
  .brand{display:none}
  .hint.kb{display:none}
}

.tsbox{position:fixed;inset:0;display:grid;place-items:center;z-index:50;pointer-events:none}.tsbox>*{pointer-events:auto}
.narrownum{max-width:11ch}
.resume{margin-top:22px;padding:14px 16px;border:1.5px solid var(--accent);border-radius:9px;background:var(--card)}
.mail{color:var(--accent)}
.nav .txt{width:auto;padding:0 14px;font-size:15px;font-weight:600;background:var(--accent);color:var(--accent-ink)}
.about{position:fixed;bottom:22px;inset-inline-end:20px;font-size:13px;color:var(--muted);z-index:4}
.about a{color:inherit}
.brand a{color:inherit}