:root {
  --bg: #0b132b;
  --card: #1c2541;
  --text: #e0e6ff;
  --muted: #9aa4c7;
  --accent: #3a86ff;
  --error: #ff4d4f;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% 0%, #111a3a 0%, var(--bg) 40%, #050913 100%);
  color: var(--text);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.title {
  margin: 0 0 8px;
  font-size: 1.6rem;
  font-weight: 700;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
}

form#payu-form { display: none; }

.message {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 16px 18px;
  border-radius: 12px;
  width: 100%;
  line-height: 1.4;
}

.message.loading::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--muted);
  border-top-color: var(--accent);
  margin-right: 10px;
  vertical-align: text-bottom;
  animation: spin 1s linear infinite;
}

.message.error { color: #fff; border-color: rgba(255,77,79,0.35); background: linear-gradient(180deg, rgba(255,77,79,0.15), transparent); }

@keyframes spin { to { transform: rotate(360deg); } }