.form-card {
  max-width: 480px;
  margin: 0 auto;
  background: #ffffff;
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.form-group { margin-bottom: 14px; }
.form-group label { display: block; margin-bottom: 4px; font-weight: 600; font-size: 14px; }
.form-group input[type="text"],
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  box-sizing: border-box;
  font-size: 14px;
}
.file-note { display: block; margin-top: 4px; font-size: 12px; color: #64748b; }
button#btn {
  width: 100%;
  padding: 12px;
  background: #0284c7;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s;
}
button#btn:hover { background: #0369a1; }
button#btn:disabled { background: #94a3b8; }
#responseMsg { margin-top: 14px; font-weight: 600; text-align: center; }