:root {
    --glow-hue: 222deg;
      --shadow-hue: 180deg;
      --spring-easing: linear(
      0, 0.002, 0.01 0.9%, 0.038 1.8%, 0.156, 0.312 5.8%, 0.789 11.1%, 1.015 14.2%,
      1.096, 1.157, 1.199, 1.224 20.3%, 1.231, 1.231, 1.226, 1.214 24.6%,
      1.176 26.9%, 1.057 32.6%, 1.007 35.5%, 0.984, 0.968, 0.956, 0.949 42%,
      0.946 44.1%, 0.95 46.5%, 0.998 57.2%, 1.007, 1.011 63.3%, 1.012 68.3%,
      0.998 84%, 1
    );
      --spring-duration: 1.33s;
}
@property --shimmer {
  syntax: "<angle>";
  inherits: false;
  initial-value: 33deg;
}

@keyframes shimmer {
  0% {
      --shimmer: 0deg;
  }
  100% {
      --shimmer: 360deg;
  }
}

@keyframes shine {
  0% {
      opacity: 0;
  }
  15% {
      opacity: 1;
  }
  55% {
      opacity: 1;
  }
  100% {
      opacity: 0;
  }
}

button {
    position: relative;
    isolation: isolate;
    box-shadow: 0 2px 3px 1px hsl(var(--glow-hue) 50% 20% / 50%), inset 0 -10px 20px -10px hsla(var(--shadow-hue),10%,90%,95%);
    scale: 1;
    transition: all var(--spring-duration) var(--spring-easing);
    background: linear-gradient(181.48deg, #C42126 1.46%, #FF3238 98.94%);
    box-shadow: 2px 2px 2px 0px #FFFFFF80 inset, -2px -2px 2px 0px #00000040 inset, 0px 0px 10px 0px #F6F6F6;
    color: #fff;
    text-decoration: unset;
    padding: 20px 30px 16px;
    border-radius: 8px;
    letter-spacing: 0.2em;
    font-family: "Heavitas", sans-serif;
    color: #fff;
    border: unset;
    font-weight: 400;
}

button.button2 {
    padding: 15px 30px 13px;
}

button:hover:not(:active),
button.active {
  transition-duration: calc(var(--spring-duration)*0.5);
  scale: 1.1;
  box-shadow: 0 4px 8px -2px hsl(var(--glow-hue) 50% 20% / 50%), inset 0 0 0 transparent;
}
button:active {
  scale: 1.1;
  transition-duration: calc(var(--spring-duration)*0.5);
}

.shimmer {
  position: absolute;
  inset: -40px;
  border-radius: inherit;
  mask-image: conic-gradient(
      from var(--shimmer, 0deg),
      transparent 0%,
      transparent 10%,
      black 36%,
      black 45%,
      transparent 50%,
      transparent 60%,
      black 85%,
      black 95%,
      transparent 100%
  );
  mask-size: cover;
  mix-blend-mode: plus-lighter;
  animation: shimmer 1s linear infinite both;
}
button:hover .shimmer::before,
button:hover .shimmer::after,
button.active .shimmer::before,
button.active .shimmer::after {
  opacity: 1;
  animation: shine 1.2s ease-in 1 forwards;
}
.shimmer::before,
.shimmer::after {
  transition: all 0.5s ease;
  opacity: 0;
  content: "";
  border-radius: inherit;
  position: absolute;
  mix-blend-mode: color;
  inset: 40px;
  pointer-events: none;
}
.shimmer::before {
  box-shadow: 0 0 3px 2px hsl(var(--glow-hue) 20% 95%),
      0 0 7px 4px hsl(var(--glow-hue) 20% 80%),
      0 0 13px 4px hsl(var(--glow-hue) 50% 70%),
      0 0 25px 5px hsl(var(--glow-hue) 100% 70%);
  z-index: -1;
}

.shimmer::after {
  box-shadow: inset 0 0 0 1px hsl(var(--glow-hue) 70% 95%),
      inset 0 0 2px 1px hsl(var(--glow-hue) 100% 80%),
      inset 0 0 5px 2px hsl(var(--glow-hue) 100% 70%);
  z-index: 2;
}
  
button .text {
    background-clip: text;
    background-color: var(--bg);
    background-image: linear-gradient(120deg, transparent, hsla(var(--glow-hue),100%,80%,0.66) 40%, hsla(var(--glow-hue),100%,90%,.9) 50%, transparent 52%);
    background-repeat: no-repeat;
    background-size: 300% 300%;
    background-position: center 200%;
}
  
button:hover .text,
button.active .text {
    animation: text .66s ease-in 1 both;
}