:root{
  --deep:#061a44; --royal:#1557d6; --azure:#2d8cff; --sky:#e6f2ff; --ice:#f4f9ff;
  --line:#cfe1f7; --ink:#10233f; --mute:#5a7396; --err:#b3261e;
  --shadow:0 12px 32px -14px rgba(21,87,214,.35);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font:16px/1.6 "Plus Jakarta Sans",system-ui,sans-serif;
  background:
    linear-gradient(var(--ice),var(--ice)),
    radial-gradient(circle,#b9d6f8 1px,transparent 1.5px) 0 0/22px 22px;
  background-blend-mode:normal;background-color:var(--ice)}
body::before{content:"";position:fixed;inset:0;z-index:-1;
  background:radial-gradient(circle,#b9d6f8 1px,transparent 1.5px) 0 0/22px 22px;opacity:.55}

/* Hero */
.hero{position:relative;overflow:hidden;color:#fff;text-align:center;padding:64px 20px 110px;
  background:linear-gradient(160deg,var(--deep) 10%,#0b3a8f 60%,var(--royal));
  border-radius:0 0 48px 48px}
.aurora i{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;animation:drift 14s ease-in-out infinite alternate}
.aurora i:nth-child(1){width:340px;height:340px;background:#2d8cff;left:-80px;top:-100px}
.aurora i:nth-child(2){width:300px;height:300px;background:#7cc4ff;right:-60px;top:40px;animation-delay:-5s}
.aurora i:nth-child(3){width:260px;height:260px;background:#1f4fd8;left:38%;bottom:-140px;animation-delay:-9s}
.big14{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-weight:800;
  font-size:clamp(11rem,38vw,26rem);line-height:1;letter-spacing:-.05em;color:transparent;
  -webkit-text-stroke:2px rgba(255,255,255,.14);user-select:none}
.hero-inner{position:relative;max-width:640px;margin:0 auto;animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.badge{display:inline-block;padding:6px 16px;border:1px solid rgba(255,255,255,.45);border-radius:999px;
  background:rgba(255,255,255,.12);backdrop-filter:blur(6px);font-weight:600;font-size:.9rem}
.hero h1{margin:18px 0 12px;font-weight:800;font-size:clamp(1.9rem,6vw,3.2rem);line-height:1.12;letter-spacing:-.02em}
.hero p{margin:0 auto;max-width:480px;color:#dcebff}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;list-style:none;margin:26px 0 0;padding:0}
.chips li{padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);font-size:.88rem;font-weight:500}
@keyframes drift{to{transform:translate(50px,40px) scale(1.15)}}
@keyframes rise{from{opacity:0;transform:translateY(18px)}}

/* Form */
main{max-width:780px;margin:-64px auto 40px;padding:0 16px;position:relative}
form{counter-reset:step}
.card{position:relative;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border:1px solid var(--line);
  border-radius:20px;padding:26px 26px 10px;margin-bottom:20px;box-shadow:var(--shadow)}
.card h2{display:flex;align-items:center;gap:12px;margin:0 0 20px;font-size:1.2rem;font-weight:800;color:var(--deep)}
.card h2::before{counter-increment:step;content:counter(step);flex:none;display:grid;place-items:center;
  width:34px;height:34px;border-radius:11px;color:#fff;font-size:1rem;
  background:linear-gradient(135deg,var(--royal),var(--azure));box-shadow:0 6px 14px -4px rgba(21,87,214,.6)}
label{display:block;margin-bottom:18px;font-weight:600;font-size:.94rem;color:var(--deep)}
label small{display:block;margin-top:6px;font-weight:400;color:var(--mute)}
input,select,textarea{display:block;width:100%;margin-top:7px;padding:12px 14px;font:inherit;font-weight:500;color:var(--ink);
  background:var(--ice);border:1.5px solid var(--line);border-radius:12px;transition:border-color .2s,box-shadow .2s,background .2s}
input::placeholder,textarea::placeholder{color:#93a9c6;font-weight:400}
input:hover,select:hover,textarea:hover{border-color:#9ec3f0}
input:focus,select:focus,textarea:focus{outline:none;background:#fff;border-color:var(--azure);box-shadow:0 0 0 4px rgba(45,140,255,.18)}
select:disabled{opacity:.6;cursor:not-allowed}
input[type=file]{padding:10px;border-style:dashed;background:var(--sky);cursor:pointer}
input[type=file]::file-selector-button{margin-right:12px;padding:8px 14px;border:0;border-radius:8px;color:#fff;
  background:linear-gradient(135deg,var(--royal),var(--azure));font:inherit;font-weight:600;cursor:pointer}
.row{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}

/* Golongan tiles */
.radios{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:7px}
.radio{display:flex;align-items:center;justify-content:center;gap:10px;margin:0;padding:16px;cursor:pointer;
  border:1.5px solid var(--line);border-radius:14px;background:var(--ice);font-weight:600;transition:all .2s}
.radio:hover{border-color:var(--azure);transform:translateY(-2px)}
.radio input{appearance:none;width:18px;height:18px;margin:0;padding:0;border:2px solid #9ec3f0;border-radius:50%;background:#fff;flex:none}
.radio input:checked{border:5px solid #fff;background:var(--royal);box-shadow:0 0 0 2px #fff}
.radio:has(input:checked){color:#fff;border-color:transparent;background:linear-gradient(135deg,var(--royal),var(--azure));
  box-shadow:0 10px 22px -10px rgba(21,87,214,.8)}

.info{display:flex;gap:10px;margin:0 0 18px;padding:12px 16px;border-radius:12px;background:var(--sky);
  border:1px solid var(--line);font-size:.92rem;color:#20406e}
.info::before{content:"i";flex:none;display:grid;place-items:center;width:22px;height:22px;margin-top:1px;border-radius:50%;
  background:var(--royal);color:#fff;font-weight:800;font-size:.8rem}

/* Anggota */
.anggota{padding:16px 16px 0;margin-bottom:16px;border:1.5px dashed #9ec3f0;border-radius:16px;background:var(--ice);animation:rise .35s both}
.anggota-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-weight:800;color:var(--royal)}
.remove{padding:5px 12px;border:1px solid #f0c0bc;border-radius:999px;background:#fff;color:var(--err);font:inherit;font-size:.85rem;font-weight:600;cursor:pointer}
.remove:hover{background:#fdecea}

/* Buttons */
.btn{position:relative;overflow:hidden;display:block;width:100%;padding:15px 22px;margin-bottom:14px;border:0;border-radius:14px;
  color:#fff;font:800 1.02rem "Plus Jakarta Sans",system-ui,sans-serif;text-align:center;text-decoration:none;cursor:pointer;
  background:linear-gradient(135deg,var(--deep),var(--royal) 60%,var(--azure));
  box-shadow:0 14px 26px -12px rgba(21,87,214,.8);transition:transform .2s,box-shadow .2s}
.btn::after{content:"";position:absolute;top:0;left:-70%;width:45%;height:100%;transform:skewX(-20deg);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);transition:left .6s}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 30px -12px rgba(21,87,214,.9)}
.btn:hover::after{left:130%}
.btn:focus-visible{outline:3px solid #fff;outline-offset:-6px}
.btn.ghost{color:var(--royal);background:#fff;border:1.5px solid var(--royal);box-shadow:none}
.btn.ghost::after{display:none}
.btn.ghost:hover{background:var(--sky)}
.btn:disabled{opacity:.65;cursor:wait;transform:none}
#addAnggota{margin-bottom:20px}
#submitBtn{font-size:1.1rem;padding:18px}
.error{margin:0 0 16px;padding:12px 16px;border-radius:12px;color:var(--err);background:#fdecea;border:1px solid #f3b8b3;font-weight:600}
.foot{padding:8px 16px 40px;text-align:center;color:var(--mute);font-size:.88rem}

/* Modal */
.modal{position:fixed;inset:0;z-index:10;display:grid;place-items:center;padding:16px;background:rgba(6,26,68,.6);backdrop-filter:blur(6px)}
.modal-box{width:100%;max-width:460px;padding:30px 26px 14px;text-align:center;background:#fff;border-radius:24px;
  box-shadow:0 30px 60px -20px rgba(6,26,68,.7);animation:pop .4s cubic-bezier(.2,1.2,.3,1) both}
.tick{display:grid;place-items:center;width:64px;height:64px;margin:0 auto 14px;border-radius:50%;color:#fff;font-size:2rem;
  background:linear-gradient(135deg,var(--royal),var(--azure));box-shadow:0 0 0 8px var(--sky)}
.modal-box h3{margin:0 0 8px;font-size:1.25rem;font-weight:800;color:var(--deep)}
.modal-box p{margin:0 0 22px;color:#3a5378}
@keyframes pop{from{opacity:0;transform:scale(.85) translateY(20px)}}

@media(max-width:600px){
  .row{grid-template-columns:1fr}
  .card{padding:22px 18px 6px}
  .hero{padding-top:48px;border-radius:0 0 32px 32px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
/* ===== Upgrade ===== */
fieldset{min-width:0;margin:0 0 18px;padding:0;border:0}
legend{padding:0;font-weight:600;font-size:.94rem;color:var(--deep)}
.tick.warn{background:linear-gradient(135deg,#f59e0b,#fbbf24);box-shadow:0 0 0 8px #fff4d6;font-weight:800}
.paybox{margin:0 0 14px;padding:14px;border:1.5px dashed var(--azure);border-radius:14px;background:var(--sky);
  font:800 1.3rem/1.2 "Plus Jakarta Sans",system-ui,sans-serif;letter-spacing:.04em;color:var(--deep);word-break:break-all}
.spinner{width:56px;height:56px;margin:0 auto 18px;border-radius:50%;border:6px solid var(--sky);border-top-color:var(--royal);animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.btn.text{color:var(--mute);background:none;box-shadow:none;font-weight:600}
.btn.text::after{display:none}
.btn.text:hover{box-shadow:none;transform:none;color:var(--deep)}
.modal-box{max-height:92vh;overflow:auto}

/* Bukti pendaftaran (dirender di luar layar lalu dijadikan gambar) */
.receipt{position:fixed;left:-10000px;top:0;width:760px;padding:32px;background:#fff;color:var(--ink);font:15px/1.5 "Plus Jakarta Sans",system-ui,sans-serif}
.receipt .rc-head{padding:22px 24px;border-radius:16px;color:#fff;background:linear-gradient(135deg,var(--deep),var(--royal))}
.receipt .rc-head h1{margin:0;font-size:1.5rem}
.receipt .rc-head p{margin:4px 0 0;color:#dcebff}
.receipt .rc-code{margin:16px 0;padding:12px 16px;border-radius:12px;background:var(--sky);font-weight:800;color:var(--deep)}
.receipt h2{margin:18px 0 8px;font-size:1.05rem;color:var(--royal)}
.receipt table{width:100%;border-collapse:collapse}
.receipt td{padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.receipt td:first-child{width:36%;color:var(--mute);font-weight:600}
.receipt .imgs{display:flex;flex-wrap:wrap;gap:14px}
.receipt .imgs figure{margin:0;width:226px}
.receipt .imgs img{display:block;width:100%;height:170px;object-fit:contain;border:1px solid var(--line);border-radius:10px;background:var(--ice)}
.receipt figcaption{margin-top:4px;font-size:.8rem;color:var(--mute);text-align:center}
.receipt .rc-foot{margin-top:18px;font-size:.8rem;color:var(--mute);text-align:center}