.sa-bond-calculator {
  max-width: 100%;
  margin: 40px auto;
  padding: 32px 28px 28px 28px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.10);
  font-family: 'Open Sans', Arial, sans-serif;
  border: 1px solid #e3e8ee;
}
.sa-bond-calculator h2 {
  font-size: 1.6rem;
  font-weight: 600;
  color: #1a3d5d;
  margin-bottom: 24px;
  letter-spacing: -1px;
  text-align: center;
}
.sa-bond-form label {
  display: block;
  margin-bottom: 18px;
  font-weight: 600;
  color: #1a3d5d;
  font-size: 1rem;
}
.sa-bond-form input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  margin-top: 6px;
  border: 1.5px solid #b3d8f1;
  border-radius: 6px;
  box-sizing: border-box;
  font-size: 1rem;
  background: #f8fafc;
  transition: border 0.2s;
}
.sa-bond-form input[type="number"]:focus {
  border: 1.5px solid #0073aa;
  outline: none;
  background: #fff;
}
.sa-bond-form button {
  width: 100%;
  padding: 12px;
  background: linear-gradient(90deg, #0073aa 0%, #005177 100%);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 10px;
  box-shadow: 0 2px 8px rgba(0,115,170,0.08);
  transition: background 0.2s, box-shadow 0.2s;
}
.sa-bond-form button:hover {
  background: linear-gradient(90deg, #005177 0%, #0073aa 100%);
  box-shadow: 0 4px 16px rgba(0,115,170,0.12);
}
.sa-bond-result {
  margin-top: 28px;
  padding: 18px 16px;
  background: #f6fafd;
  border: 1.5px solid #b3d8f1;
  border-radius: 6px;
  color: #1a3d5d;
  font-size: 1.08rem;
  font-weight: 500;
  letter-spacing: 0.1px;
}
.sa-bond-result strong {
  color: #0073aa;
}
.sa-bond-error {
  margin-top: 24px;
  padding: 14px 12px;
  background: #ffeaea;
  border: 1.5px solid #ffb3b3;
  border-radius: 6px;
  color: #a94442;
  font-size: 1.05rem;
  font-weight: 500;
}