/* Instagram-style centered modal animation */
.login-dialog {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  opacity: 0;
  transition: opacity 0.2s ease-out, transform 0.2s ease-out;
  border: none;
  margin: 0;
}

.login-dialog[open] {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.login-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0);
  transition: background-color 0.2s ease-out;
}

.login-dialog[open]::backdrop {
  background-color: rgba(0, 0, 0, 0.5);
}

/* Allow animation on close */
@starting-style {
  .login-dialog[open] {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.9);
  }
  
  .login-dialog[open]::backdrop {
    background-color: rgba(0, 0, 0, 0);
  }
}