.collab-modal:not([hidden]) {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0,0,0,.85);
  backdrop-filter: blur(8px);
}
.collab-modal[hidden] { display: none !important; }
.collab-modal-box {
  position: relative;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  border: 1px solid #c6a36b;
  border-radius: 16px;
  background: #141414;
  color: #fff;
  box-shadow: 0 20px 80px rgba(0,0,0,.7);
}
.collab-modal-box h2 {
  margin: 0 0 12px;
  color: #e1b977;
  font-size: 26px;
}
.collab-modal-box p { color: #ccc; }
#collabClose {
  position: absolute;
  top: 12px;
  right: 16px;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 30px;
  cursor: pointer;
}
#collabForm {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}
#collabForm input,
#collabForm select,
#collabForm textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 14px;
  border: 1px solid #444;
  border-radius: 8px;
  background: #222;
  color: #fff;
  font: inherit;
}
#collabForm textarea {
  min-height: 120px;
  resize: vertical;
}
#collabForm button[type="submit"] {
  padding: 15px;
  border: 0;
  border-radius: 8px;
  background: #e1b977;
  color: #111;
  font-weight: 800;
  cursor: pointer;
}
#collabForm button:disabled {
  opacity: .5;
  cursor: wait;
}
#collabMessage {
  margin: 0;
  min-height: 20px;
}
@media(max-width:600px) {
  .collab-modal-box { padding: 24px 18px; }
  .collab-modal-box h2 { font-size: 21px; }
}