*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
:root{
  --bg:#06080f;
  --bg-2:#0a0f1f;
  --text:#eaf0ff;
  --muted:#9aa6c2;
  --primary:#7c5cff;
  --primary-2:#22d3ee;
  --accent:#ffb547;
  --glass:rgba(255,255,255,0.06);
  --glass-strong:rgba(255,255,255,0.10);
  --border:rgba(255,255,255,0.12);
  --shadow:0 30px 60px -20px rgba(0,0,0,0.6),0 8px 30px -8px rgba(124,92,255,0.35);
}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:radial-gradient(1200px 800px at 80% -10%,rgba(124,92,255,0.25),transparent 60%),
             radial-gradient(900px 700px at -10% 20%,rgba(34,211,238,0.18),transparent 60%),
             linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
}

/* HDR background orbs */
.bg-orbs{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;mix-blend-mode:screen;animation:float 14s ease-in-out infinite}
.orb-1{width:520px;height:520px;background:radial-gradient(circle,#7c5cff,transparent 60%);top:-120px;left:-120px}
.orb-2{width:600px;height:600px;background:radial-gradient(circle,#22d3ee,transparent 60%);bottom:-180px;right:-160px;animation-delay:-4s}
.orb-3{width:420px;height:420px;background:radial-gradient(circle,#ffb547,transparent 60%);top:40%;left:50%;animation-delay:-8s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-40px) scale(1.08)}}
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.04) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%)}

/* Header */
.site-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 32px;max-width:1200px;margin:0 auto;
}
.brand{display:flex;align-items:center;gap:14px}
.brand-logo{
  width:54px;height:54px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-family:'Space Grotesk',sans-serif;font-weight:700;letter-spacing:1px;font-size:14px;
  background:linear-gradient(135deg,#7c5cff,#22d3ee);
  box-shadow:0 10px 30px -8px rgba(124,92,255,0.7),inset 0 1px 0 rgba(255,255,255,0.4);
  color:#fff;
}
.brand-logo .dot{opacity:.7;margin:0 1px}
.brand-name{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:20px;letter-spacing:1px}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:2px;text-transform:uppercase}
.wa-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:999px;text-decoration:none;font-weight:600;font-size:14px;
  color:#03301a;background:linear-gradient(135deg,#25D366,#00ff88);
  box-shadow:0 10px 30px -10px rgba(37,211,102,0.7),inset 0 1px 0 rgba(255,255,255,0.5);
  transition:transform .2s ease,box-shadow .2s ease;
}
.wa-btn:hover{transform:translateY(-2px);box-shadow:0 18px 40px -10px rgba(37,211,102,0.8)}

/* Main */
.main{max-width:980px;margin:0 auto;padding:30px 24px 80px}
.hero{text-align:center;margin:30px 0 36px;animation:fadeUp .8s ease both}
.badge{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--border);
  font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);
  backdrop-filter:blur(10px);
}
.title{
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(34px,5vw,58px);line-height:1.05;margin:18px 0 14px;font-weight:700;letter-spacing:-1px;
}
.grad{background:linear-gradient(135deg,#a78bfa,#22d3ee 60%,#ffb547);-webkit-background-clip:text;background-clip:text;color:transparent}
.subtitle{color:var(--muted);max-width:620px;margin:0 auto;font-size:16px;line-height:1.6}

/* Card */
.card{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,0.08),rgba(255,255,255,0.03));
  border:1px solid var(--border);
  border-radius:28px;padding:30px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(20px) saturate(140%);
  animation:fadeUp .9s .1s ease both;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:28px;pointer-events:none;
  background:linear-gradient(135deg,rgba(255,255,255,0.18),transparent 40%);
  mix-blend-mode:overlay;
}
.row{display:flex;gap:14px;margin-bottom:16px}
.amount-row .field{flex:1}
.currencies{align-items:end}
.currencies .field{flex:1;min-width:0}
.field{display:flex;flex-direction:column;gap:8px}
.lbl{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:600}
input,select{
  width:100%;
  background:rgba(0,0,0,0.35);
  color:var(--text);
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px 16px;font-size:16px;font-weight:500;
  font-family:inherit;
  transition:border-color .2s,box-shadow .2s,transform .2s;
  outline:none;
  appearance:none;
}
select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239aa6c2' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
select option{background:#0a0f1f;color:var(--text)}
input:focus,select:focus{border-color:rgba(124,92,255,0.6);box-shadow:0 0 0 4px rgba(124,92,255,0.18)}

.swap{
  flex:0 0 auto;align-self:end;
  width:52px;height:52px;border-radius:14px;cursor:pointer;
  background:linear-gradient(135deg,rgba(124,92,255,0.4),rgba(34,211,238,0.4));
  border:1px solid var(--border);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -8px rgba(124,92,255,0.6);
  transition:transform .25s ease;
}
.swap:hover{transform:rotate(180deg)}
.convert-btn{
  position:relative;overflow:hidden;
  width:100%;margin-top:8px;padding:16px;border:none;border-radius:16px;cursor:pointer;
  font-size:16px;font-weight:700;letter-spacing:.5px;color:#fff;
  background:linear-gradient(135deg,#7c5cff,#22d3ee);
  box-shadow:0 18px 40px -12px rgba(124,92,255,0.65),inset 0 1px 0 rgba(255,255,255,0.4);
  transition:transform .2s ease,box-shadow .2s ease;
}
.convert-btn:hover{transform:translateY(-2px)}
.convert-btn:active{transform:translateY(0)}
.btn-glow{position:absolute;inset:0;background:radial-gradient(200px 60px at var(--x,50%) 50%,rgba(255,255,255,0.25),transparent 70%);pointer-events:none}

/* Result */
.result{
  margin-top:22px;padding:22px;border-radius:18px;
  background:linear-gradient(180deg,rgba(255,255,255,0.06),rgba(255,255,255,0.02));
  border:1px solid var(--border);
  min-height:90px;
  display:flex;flex-direction:column;justify-content:center;gap:6px;
}
.result-from{color:var(--muted);font-size:14px}
.result-to{font-family:'Space Grotesk',sans-serif;font-size:clamp(28px,4.5vw,42px);font-weight:700;letter-spacing:-.5px;background:linear-gradient(135deg,#fff,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.meta{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:14px;font-size:12px;color:var(--muted)}

/* Features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.feature{
  background:var(--glass);border:1px solid var(--border);border-radius:20px;padding:20px;
  backdrop-filter:blur(14px);
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(124,92,255,0.4)}
.f-ico{font-size:26px;margin-bottom:10px}
.feature h3{margin:0 0 6px;font-size:16px;font-family:'Space Grotesk',sans-serif}
.feature p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.5}

/* Footer */
.site-footer{
  max-width:1200px;margin:0 auto;padding:24px 32px;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  color:var(--muted);font-size:13px;border-top:1px solid var(--border);
}
.foot-links a{color:var(--text);text-decoration:none;font-weight:500}
.foot-links a:hover{color:var(--primary-2)}

/* Loader */
.loader-overlay{
  position:fixed;inset:0;display:none;align-items:center;justify-content:center;
  background:radial-gradient(circle at center,rgba(6,8,15,0.85),rgba(6,8,15,0.96));
  backdrop-filter:blur(8px);z-index:50;
}
.loader-overlay.show{display:flex;animation:fadeIn .25s ease}
.loader-inner{text-align:center}
.coin{
  width:110px;height:110px;margin:0 auto 18px;position:relative;
  transform-style:preserve-3d;animation:spin3d 1.6s linear infinite;
}
.coin-face{
  position:absolute;inset:0;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:'Space Grotesk',sans-serif;font-size:48px;font-weight:800;color:#3b2a00;
  background:radial-gradient(circle at 30% 30%,#fff5b8,#ffd24a 40%,#b07a00);
  box-shadow:0 0 40px rgba(255,180,71,0.6),inset 0 0 20px rgba(255,255,255,0.4);
  backface-visibility:hidden;
}
.coin-face.back{transform:rotateY(180deg)}
@keyframes spin3d{0%{transform:rotateY(0)}100%{transform:rotateY(360deg)}}
.loader-text{font-family:'Space Grotesk',sans-serif;font-size:16px;letter-spacing:2px;text-transform:uppercase;color:#eaf0ff}
.dots i{display:inline-block;animation:blink 1.2s infinite;font-style:normal}
.dots i:nth-child(2){animation-delay:.2s}
.dots i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.2}40%{opacity:1}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* Responsive */
@media (max-width:720px){
  .site-header{padding:18px 18px}
  .wa-btn{padding:9px 14px;font-size:13px}
  .features{grid-template-columns:1fr}
  .currencies{flex-direction:column;align-items:stretch}
  .swap{align-self:center;transform:rotate(90deg)}
  .swap:hover{transform:rotate(270deg)}
}