.expandable {
  display:none;
  background:transparent;
  padding:0;
  margin-top:0;
  border:none;
  border-radius:0;
}
.expandable.active {
  display:block;
}
.expandable iframe {width:100%;height:420px;border:none;border-radius:6px;}
.expandable form {display:flex;flex-direction:column;gap:1rem;}
.expandable input, .expandable textarea {padding:0.9rem;border:1px solid #ccc;border-radius:6px;}
.expandable button {
  background:#f9f7f2;
  color:var(--dark-blue);
  border:2px solid #c5d0e0;
  border-radius:20px;
  padding:0.85rem 1.8rem;
  font-weight:600;
  font-size:1rem;
  cursor:pointer;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 2px 6px rgba(35,57,76,0.06);
  width:100%;
}
.expandable button:hover {
  background:#f0f3f8;
  border-color:#b0c0d8;
  transform:translateY(-1px);
  box-shadow:0 4px 10px rgba(35,57,76,0.1);
}
.success-banner {
  background:#d4edda; color:#155724; padding:1.2rem; border-radius:8px; margin:1rem 0; text-align:center; font-weight:600; display:none;
}
.success-banner .material-icons-outlined {
  font-size: 1.32rem;
  vertical-align: -3px;
}