cyb/src/components/btnGrd/Button.module.scss

$color-text: #36d6ae;

@mixin linear-gradient-green($route) {
  background: linear-gradient(
    $route,
    rgba(0, 237, 235, 0) 0%,
    rgba(0, 237, 235, 6) 100%
  );
}

@mixin ion-lamp {
  content: '';
  position: absolute;
  background: #ffffff;
  border: 1.5px solid #ffffff;
  box-sizing: border-box;
  top: 0;
  bottom: 0;
  box-shadow: 0px 0px 4px 1px rgba(54, 214, 174, 0.5),
    0px 0px 15px 1px rgba(54, 214, 174, 0.5);
}

@mixin styleGradientPseudoEl {
  content: '';
  position: absolute;
  height: 100%;
  width: 50px;
  top: 0;
  bottom: 0;
  opacity: 20%;
}

@mixin animation-ion-lamp {
  animation: blink 1s infinite;
  animation-fill-mode: both;
  animation-timing-function: ease-in-out;
  opacity: 1;
}

.containerBtnGrd {
  border: none;
  outline: none;
  background-color: transparent;
  color: $color-text;
  position: relative;
  height: 52px;
  min-width: 217px;
  font-size: 18px;

  @media (max-width: 540px) {
    min-width: 0;
    width: 100%;
    height: 44px;
    font-size: 15px;
  }

  &:hover {
    color: #40ecc1;
  }

  &:disabled {
    cursor: not-allowed;
    color: #777;
  }

  &:focus-visible {
    border: 1px solid #40ecc1;
  }

  &:disabled:hover {
    color: #777;
  }

  &::before {
    left: 0;
    border-radius: 2px 0px 0px 2px;
    @include ion-lamp;
    @include animation-ion-lamp;
  }

  &::after {
    right: 0;
    border-radius: 0px 2px 2px 0px;
    @include ion-lamp;
    @include animation-ion-lamp;
  }
}

.smallBtn {
  height: 34px;
  min-width: 120px;
  font-size: 16px;
}

a.containerBtnGrd {
  display: inline-block;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.7;
  }
}

.GradientContainer {
  transform-style: preserve-3d;
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
}

.containerBtnGrd:not(:disabled) {
  .GradientContainer {
    &::before {
      @include styleGradientPseudoEl;
      @include linear-gradient-green(-90deg);
      left: 3px;
      transform-origin: left;
      transform: perspective(100px) rotateY(55deg);
    }

    &::after {
      @include styleGradientPseudoEl;
      @include linear-gradient-green(90deg);
      right: 3px;
      transform-origin: right;
      transform: perspective(100px) rotateY(-55deg);
    }
  }
}