:root {
  color-scheme: dark;
  --bg: #070a13;
  --card: rgba(18, 24, 43, .86);
  --line: rgba(255, 255, 255, .1);
  --text: #f6f7fb;
  --muted: #9ca6bc;
  --accent: #6ee7c4;
  --accent-2: #5b8cff;
  --danger: #ff7d8c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(91, 140, 255, .22), transparent 35%),
    radial-gradient(circle at 85% 80%, rgba(110, 231, 196, .16), transparent 32%),
    var(--bg);
}

.shell { width: min(100% - 32px, 540px); margin: 0 auto; padding: 48px 0 30px; }
.brand { display: flex; align-items: center; gap: 12px; margin: 0 0 22px 8px; }
.brand-mark {
  width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px;
  font-weight: 900; font-size: 22px; color: #07110f;
  background: linear-gradient(135deg, var(--accent), #d9ffe8);
  box-shadow: 0 10px 28px rgba(110, 231, 196, .18);
}
.brand strong, .brand span { display: block; }
.brand strong { font-size: 18px; letter-spacing: -.02em; }
.brand span { color: var(--muted); font-size: 12px; margin-top: 2px; }

.card {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .38);
}
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 10px 0 10px; font-size: clamp(27px, 7vw, 38px); line-height: 1.08; letter-spacing: -.04em; }
.lead { margin: 0 0 28px; color: var(--muted); line-height: 1.6; }
label, legend { display: block; margin-bottom: 9px; font-size: 13px; font-weight: 750; }
.amount-field { position: relative; }
.amount-field input {
  width: 100%; height: 58px; padding: 0 80px 0 16px; border: 1px solid var(--line); border-radius: 14px;
  background: rgba(3, 7, 18, .6); color: var(--text); outline: none; font: 700 22px/1 ui-monospace, monospace;
  transition: border-color .2s, box-shadow .2s;
}
.amount-field input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(110, 231, 196, .1); }
.amount-field span { position: absolute; right: 16px; top: 20px; color: var(--muted); font-size: 13px; font-weight: 800; }
small { display: block; margin-top: 8px; color: var(--muted); }
fieldset { margin: 27px 0 24px; padding: 0; border: 0; }
.providers { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.provider { margin: 0; cursor: pointer; }
.provider input { position: absolute; opacity: 0; pointer-events: none; }
.provider span {
  display: grid; place-items: center; height: 52px; border: 1px solid var(--line); border-radius: 13px;
  background: rgba(255, 255, 255, .025); color: #cbd3e5; transition: .2s ease;
}
.provider input:checked + span { border-color: var(--accent); color: var(--text); background: rgba(110, 231, 196, .09); box-shadow: inset 0 0 0 1px rgba(110, 231, 196, .2); }
button, .secondary-button {
  width: 100%; min-height: 56px; border: 0; border-radius: 14px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 14px;
  color: #07110f; background: linear-gradient(135deg, var(--accent), #bafad8);
  font: inherit; font-weight: 850; text-decoration: none; transition: transform .15s, opacity .15s;
}
button:hover, .secondary-button:hover { transform: translateY(-1px); }
button:disabled { opacity: .55; cursor: wait; transform: none; }
.secure-note { margin-top: 18px; color: var(--muted); text-align: center; font-size: 12px; }
.secure-note span { color: var(--accent); margin-right: 5px; }
.message { margin: -8px 0 16px; padding: 12px 14px; border-radius: 11px; font-size: 13px; line-height: 1.5; }
.error { color: #ffdce0; border: 1px solid rgba(255, 125, 140, .3); background: rgba(255, 125, 140, .09); }
.status-card { text-align: center; }
.status-icon { width: 70px; height: 70px; margin: 0 auto 20px; display: grid; place-items: center; border-radius: 50%; background: rgba(110, 231, 196, .1); color: var(--accent); font-size: 30px; }
.status-icon.failed { background: rgba(255, 125, 140, .1); color: var(--danger); }
dl { margin: 0 0 24px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; }
dl div { display: flex; justify-content: space-between; gap: 16px; padding: 6px 0; }
dt { color: var(--muted); } dd { margin: 0; font-weight: 750; text-align: right; overflow-wrap: anywhere; }
.secondary-button { background: rgba(255, 255, 255, .08); color: var(--text); }
footer { padding: 22px 8px 0; color: #687188; font-size: 11px; text-align: center; line-height: 1.5; }
[hidden] { display: none !important; }

@media (max-width: 560px) {
  .shell { padding-top: 24px; }
  .card { padding: 24px 20px; border-radius: 20px; }
}