* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: #1a1a1a;
}

.card {
  background: white;
  max-width: 560px;
  width: 100%;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

header h1 {
  font-size: 24px;
  margin-bottom: 12px;
  color: #128C7E;
}

.subtitle {
  color: #555;
  line-height: 1.5;
  margin-bottom: 24px;
}

.info {
  background: #f5f9f7;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  border-left: 4px solid #25D366;
}

.info h2 {
  font-size: 16px;
  margin-bottom: 12px;
  color: #128C7E;
}

.info ol {
  margin-left: 20px;
  line-height: 1.8;
  color: #333;
}

.note {
  margin-top: 14px;
  padding: 10px;
  background: #fff8e1;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.5;
  color: #5d4e00;
}

.btn-primary {
  width: 100%;
  background: #1877F2;
  color: white;
  border: none;
  padding: 14px 20px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background 0.2s;
}

.btn-primary:hover { background: #166FE5; }
.btn-primary:active { background: #1464D6; }

.status {
  margin-top: 20px;
  padding: 16px;
  border-radius: 8px;
  line-height: 1.5;
}

.status.hidden { display: none; }

.status.info {
  background: #e3f2fd;
  color: #1565c0;
  border-left: 4px solid #1976d2;
}

.status.success {
  background: #e8f5e9;
  color: #1b5e20;
  border-left: 4px solid #43a047;
}

.status.success h3 { margin-bottom: 8px; }

.status.error {
  background: #ffebee;
  color: #b71c1c;
  border-left: 4px solid #e53935;
}

.status.error h3 { margin-bottom: 8px; }

footer {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid #eee;
  font-size: 12px;
  color: #777;
  line-height: 1.6;
  text-align: center;
}

footer a {
  color: #128C7E;
  text-decoration: none;
}

footer a:hover { text-decoration: underline; }