.corner-fill-btn {
  background: linear-gradient(315deg, #2c3842 60%, #c42ec4 60%);
  background-size: 200% 200%;
  background-position: left top; /* <-- start with pink, corner at bottom right */
  transition: background-position 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.corner-fill-btn:hover,
.corner-fill-btn:focus {
  background-position: right bottom; /* <-- fill towards bottom right */
}

.corner-fill-btn-login {
  background: linear-gradient(315deg, #c42ec4 60%, #39474f 60%);
  background-size: 200% 200%;
  background-position: left top;
  transition: background-position 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.corner-fill-btn-login:hover,
.corner-fill-btn-login:focus {
  background-position: right bottom;
}

.gradient-border {
  position: relative;
}

.gradient-border::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  width: 100%;
  height: 10px; /* Adjust for more/less glow */
  background: linear-gradient(90deg, #a020a0 0%, #c42ec4 50%, #a020a0 100%);
  filter: blur(6px);
  opacity: 0.7;
  z-index: 10;
  pointer-events: none;
}

.gradient-border::after {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, #a020a0 0%, #c42ec4 50%, #a020a0 100%);
  z-index: 11;
  pointer-events: none;
  border-radius: 2px;
}

.glow-dropdown {
  box-shadow: 0 0 24px 4px #c42ec4, 0 0 0 6px #000 inset;
}

.half-border::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 50%;
  border-left: 4px solid red;
}

.half-border::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: 50%;
  border-right: 4px solid blue;
}