/* ============================================================
   MetMeSS 2026 - forms.css
   Registration and abstract pages. Tokens live in base.css.
   ============================================================ */

:root{--ok:#7fe08d;--bad:#ff9a9a}

.page-head{
  position:sticky;top:0;z-index:40;
  background:rgba(7,13,24,.78);
  border-bottom:1px solid var(--glass-line);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
}
.page-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:600;color:#fff}
.brand img{height:32px;width:auto}

.intro{padding:clamp(34px,5vw,52px) 0 clamp(20px,3vw,30px)}
.intro h1{font-size:clamp(1.6rem,3.6vw,2.2rem)}
.intro .lead{margin-top:14px}
main.wrap{max-width:960px;padding-bottom:clamp(40px,6vw,72px)}

/* ---------- stepper ---------- */
.steps{display:flex;gap:8px;margin:26px 0 28px}
.stepbox{
  flex:1;min-width:0;padding:11px 13px;font-size:.8rem;color:var(--ink-3);
  border:1px solid var(--glass-line);border-radius:var(--r-ctrl);
  background:rgba(255,255,255,.03);
}
.stepbox b{display:block;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:2px}
.stepbox.on{border-color:var(--accent);background:rgba(232,181,92,.1);color:var(--ink)}
.stepbox.done{border-color:rgba(127,224,141,.45);color:var(--ok)}

/* ---------- card ---------- */
.card{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
  box-shadow:var(--lift),var(--edge);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  padding:clamp(20px,3vw,30px);
}
.card+.card{margin-top:18px}
@supports not ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){.card{background:#0f1c30}}
@media (prefers-reduced-transparency:reduce){.card{background:#0f1c30;-webkit-backdrop-filter:none;backdrop-filter:none}}

fieldset{border:0;margin-bottom:26px}
fieldset:last-of-type{margin-bottom:0}
legend{font-family:var(--disp);font-size:1.05rem;font-weight:600;color:#fff;margin-bottom:4px}
.hint{color:var(--ink-3);font-size:.84rem;margin-bottom:16px}

/* ---------- fields ---------- */
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:15px}
label,.flabel{display:block;font-size:.82rem;font-weight:500;color:var(--ink-2);margin:0 0 6px}
label .req,.flabel .req{color:var(--accent)}
input,select,textarea{
  width:100%;padding:12px 13px;font:inherit;font-size:.95rem;color:var(--ink);
  background:rgba(4,9,18,.55);border:1px solid var(--glass-line);border-radius:var(--r-ctrl);
  transition:border-color .16s ease,box-shadow .16s ease;
}
input::placeholder,textarea::placeholder{color:var(--ink-3)}
select{background-color:#0c1626;color:var(--ink)}
select option{background:#0c1626;color:var(--ink)}
input:hover,select:hover,textarea:hover{border-color:var(--glass-line-2)}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(232,181,92,.2)}
textarea{resize:vertical;min-height:92px}
.err{display:none;color:var(--bad);font-size:.8rem;margin-top:6px}
.field.bad input,.field.bad select,.field.bad textarea{border-color:var(--bad)}
.field.bad .err{display:block}
.hide{display:none}

/* checkbox and radio share one hit target with their label */
.chk{display:flex;align-items:center;gap:10px;margin-top:8px}
.chk input{width:20px;height:20px;flex:none;accent-color:var(--accent)}
.chk label{margin:0;font-size:.86rem;color:var(--ink-2);cursor:pointer;padding:6px 0}

/* ---------- authors ---------- */
.author{
  position:relative;margin-bottom:14px;padding:18px 14px 14px;
  background:rgba(4,9,18,.4);border:1px solid var(--glass-line);border-radius:var(--r-ctrl);
}
.author .anum{
  position:absolute;top:-9px;left:14px;padding:1px 9px;border-radius:999px;
  background:var(--accent);color:var(--accent-in);font-size:.66rem;font-weight:700;
}
.author .rm{
  position:absolute;top:5px;right:5px;width:34px;height:34px;
  background:none;border:0;color:var(--ink-3);cursor:pointer;font-size:1.2rem;line-height:1;border-radius:9px;
}
.author .rm:hover{color:var(--bad);background:rgba(255,255,255,.06)}

/* ---------- nav row ---------- */
.nav{display:flex;justify-content:space-between;gap:12px;margin-top:26px}
.btns{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- fee ---------- */
.fee{
  padding:22px;margin-bottom:18px;border-radius:var(--r-card);
  background:linear-gradient(140deg,rgba(46,92,146,.35),rgba(14,32,56,.35));
  border:1px solid var(--glass-line);box-shadow:var(--edge);
}
.feerow{display:flex;justify-content:space-between;gap:14px;padding:7px 0;font-size:.9rem;color:var(--ink-2)}
.feerow b{color:#fff;font-variant-numeric:tabular-nums}
.feetot{display:flex;justify-content:space-between;align-items:baseline;gap:14px;margin-top:10px;padding-top:14px;border-top:1px solid var(--glass-line)}
.feetot span{font-size:.85rem;color:var(--ink-2)}
.feetot b{font-family:var(--disp);font-size:1.85rem;color:var(--accent);font-variant-numeric:tabular-nums}
.promo{display:flex;gap:8px;margin-top:6px}
.promo input{text-transform:uppercase}
.pmsg{display:none;font-size:.82rem;margin-top:8px}
.pmsg.ok{display:block;color:var(--ok)}
.pmsg.bad{display:block;color:var(--bad)}

/* ---------- payment ---------- */
.pay{display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:start}
.qr{background:#fff;padding:10px;border-radius:14px}
.upi{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  margin:8px 0 16px;padding:12px 14px;border-radius:var(--r-ctrl);
  background:rgba(4,9,18,.55);border:1px dashed var(--glass-line-2);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92rem;color:var(--accent);
}
.upi button{background:none;border:0;color:var(--ink-3);cursor:pointer;font-size:.78rem;min-height:34px;padding:0 4px}
.upi button:hover{color:var(--accent)}

/* ---------- file upload ---------- */
.drop{
  padding:24px;text-align:center;cursor:pointer;border-radius:var(--r-ctrl);
  border:1.5px dashed var(--glass-line-2);background:rgba(4,9,18,.4);
  transition:border-color .16s ease,background-color .16s ease;
}
.drop:hover,.drop.over{border-color:var(--accent);background:rgba(232,181,92,.07)}
.drop p{color:var(--ink-2);font-size:.89rem}
.drop small{display:block;margin-top:6px;color:var(--ink-3);font-size:.78rem}
.drop input{display:none}
.filed{
  display:flex;align-items:center;gap:10px;margin-top:10px;padding:11px 13px;font-size:.86rem;
  background:rgba(4,9,18,.55);border:1px solid var(--glass-line);border-radius:var(--r-ctrl);
}
.filed .fn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink)}
.filed .fs{flex:none;color:var(--ink-3);font-size:.78rem}
.filed .fx{flex:none;background:none;border:0;color:var(--ink-3);cursor:pointer;font-size:1.05rem;min-height:32px;padding:0 6px;border-radius:8px}
.filed .fx:hover{color:var(--bad);background:rgba(255,255,255,.06)}
.filed.good{border-color:rgba(127,224,141,.45)}
.bar{display:none;height:4px;margin-top:14px;border-radius:4px;overflow:hidden;background:rgba(255,255,255,.1)}
.bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .25s ease}

/* ---------- notices ---------- */
.notice,.ok-box{border-radius:var(--r-ctrl);padding:14px 17px;font-size:.87rem;color:var(--ink-2);margin-top:16px}
.notice{background:rgba(232,181,92,.08);border:1px solid rgba(232,181,92,.26);border-left:3px solid var(--accent)}
.notice b{color:var(--accent)}
.ok-box{background:rgba(127,224,141,.08);border:1px solid rgba(127,224,141,.28);border-left:3px solid var(--ok)}
.ok-box b{color:var(--ok)}

/* ---------- done ---------- */
#done{display:none;text-align:center;padding:40px 20px}
#done .idbox{font-family:var(--disp);font-size:2.2rem;letter-spacing:.04em;color:var(--accent);margin:16px 0;word-break:break-word}
.spin{
  display:inline-block;width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(0,0,0,.25);border-top-color:var(--accent-in);
  animation:sp .7s linear infinite;
}
@keyframes sp{to{transform:rotate(360deg)}}

.page-foot{border-top:1px solid var(--glass-line);margin-top:50px;padding:26px 0;color:var(--ink-3);font-size:.84rem}

/* ============================================================
   Responsive
   ============================================================ */
@media(max-width:760px){
  .pay{grid-template-columns:1fr}
  .qr{max-width:240px;margin-inline:auto}
}
@media(max-width:640px){
  .row{grid-template-columns:1fr}
  /* 16px stops iOS Safari zooming the page when a field takes focus */
  input,select,textarea{font-size:16px}
  .steps{gap:6px}
  .stepbox{padding:9px 9px;font-size:.74rem}
  .stepbox b{font-size:.6rem;letter-spacing:.1em}
  .nav{flex-direction:column-reverse}
  .nav .btn,.btns .btn{width:100%}
  .promo{flex-direction:column}
  .promo .btn{width:100%}
  .upi{flex-wrap:wrap;font-size:.85rem;word-break:break-all}
  .feetot b{font-size:1.55rem}
  #done{padding:32px 4px}
  #done .idbox{font-size:1.8rem}
}