:root{
  --bg:#0a0d0b;
  --card:#101513;
  --text:#e7f5ef;
  --muted:#9bb0a7;
  --accent:#b6ff2e;
  --accent2:#8edc21;
  --border:rgba(255,255,255,0.08);
}

body{
  margin:0;
  font-family:Arial, sans-serif;
  background:radial-gradient(circle at 20% 10%, rgba(182,255,46,0.15), transparent 50%), var(--bg);
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:100vh;
}

.wrap{width:100%;display:flex;justify-content:center;padding:20px;}
.card{
  max-width:720px;
  width:100%;
  background:var(--card);
  padding:28px;
  border-radius:16px;
  text-align:center;
  border:1px solid var(--border);
  box-shadow:0 20px 60px rgba(0,0,0,0.6);
}

.brand{display:flex;justify-content:center;align-items:center;gap:12px;margin-bottom:10px;}
.logo-mark{
  width:36px;
  height:36px;
  background:linear-gradient(135deg,var(--accent),rgba(182,255,46,0.2));
  border-radius:8px;
}

.brand-name{font-weight:bold;}
.brand-sub{font-size:12px;color:var(--muted);}

.title{margin:10px 0;}
.subtitle{color:var(--muted);}

.code-area{
  display:flex;
  gap:10px;
  justify-content:center;
  margin:18px 0;
  flex-wrap:wrap;
}

.code{
  padding:14px 18px;
  font-size:26px;
  font-weight:bold;
  background:rgba(182,255,46,0.1);
  border-radius:10px;
  color:var(--accent);
}

.btn{
  padding:12px 16px;
  border-radius:10px;
  cursor:pointer;
  text-decoration:none;
  font-weight:bold;
}

.btn-copy{
  background:transparent;
  border:1px solid var(--accent);
  color:var(--accent);
}

.btn-primary{
  display:block;
  margin:10px auto;
  background:linear-gradient(180deg,var(--accent),var(--accent2));
  color:#081105;
  max-width:420px;
}

.howto{margin-top:22px;color:var(--muted);}

.toast{
  position:fixed;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  background:#111;
  padding:10px 16px;
  border-radius:999px;
  opacity:0;
  transition:opacity .2s;
}
.toast.show{opacity:1;}