*,
*::before,
*::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: #0d100e;           
  color: #fdfdf9;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  overflow: hidden;
}

.button-container {
  --filament: #8b451333;
  --filament-grow: #fdfdf9;
  --glow: #ff9f70;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  position: relative;
  width: 100%;
  height: 100%;
}

.area {
  &:nth-child(1):hover ~ .button::before {
    transform: translate(0%, 0);
  }

  &:nth-child(2):hover ~ .button::before {
    transform: translate(-25%, 0);
  }

  &:nth-child(3):hover ~ .button::before {
    transform: translate(-50%, 0);
  }

  &:nth-child(4):hover ~ .button::before {
    transform: translate(-75%, 0);
  }

  &:nth-child(5):hover ~ .button::before {
    transform: translate(-100%, 0);
  }

  &:nth-child(6):hover ~ .button::before {
    transform: translate(0%, -50%);
  }

  &:nth-child(7):hover ~ .button::before {
    transform: translate(-25%, -50%);
  }

  &:nth-child(8):hover ~ .button::before {
    transform: translate(-50%, -50%);
  }

  &:nth-child(9):hover ~ .button::before {
    transform: translate(-75%, -50%);
  }

  &:nth-child(10):hover ~ .button::before {
    transform: translate(-100%, -50%);
  }

  &:nth-child(11):hover ~ .button::before {
    transform: translate(0%, -100%);
  }

  &:nth-child(12):hover ~ .button::before {
    transform: translate(-25%, -100%);
  }

  &:nth-child(13):hover ~ .button::before {
    transform: translate(-50%, -100%);
  }

  &:nth-child(14):hover ~ .button::before {
    transform: translate(-75%, -100%);
  }

  &:nth-child(15):hover ~ .button::before {
    transform: translate(-100%, -100%);
  }
}

.button {
  display: flex;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 215px;
  height: 60px;
  border: none;
  outline: none;
  background: none;
  transform: translate(-50%, -50%);
  cursor: pointer;
  z-index: 2;

  &::before {
    content: "";
    position: absolute;
    width: 150px;
    height: 60px;
    background-color: #ff9f7080;
    filter: blur(50px);
    border-radius: 50px;
    top: 50%;
    left: 50%;
    z-index: -4;
    transform: translateX(-50%);
    transition: all 0.3s ease-out;
  }

  &:hover,
  &:focus {
    & .base {
      box-shadow:
        inset 5px -5px 10px 0 #000000cc,
        inset 1px -10px 15px 1px #ffffff66;
    }

    & .filament-glow {
      & path {
        animation: drawLine 1s ease-in-out forwards;
      }

      & stop[offset="0%"],
      & stop[offset="100%"] {
        animation: light-on 0.2s forwards;
      }
    }

    & .text {
      text-shadow: 0 0 5px var(--glow);
    }
  }

  &:hover {
    & .glow {
      opacity: 1;
      transition: all 0.5s ease-out;
    }

    & .text > span {
      animation: slide-scroll 0.5s calc(var(--i) * 0.02s) ease;
    }
  }

  &:not(:hover, :focus) .filament-glow {
    & path {
      stroke-dashoffset: 0;
    }

    & stop[offset="0%"],
    & stop[offset="100%"] {
      animation: light-off 0.2s forwards;
    }
  }

  &:focus {
    & .filament-glow {
      & path {
        animation:
          flash 2.1s linear 3 forwards,
          fix-light 1s 7.2s ease-in-out forwards;
      }

      & stop[offset="0%"],
      & stop[offset="100%"] {
        animation: light-flash 2.1s linear 3 forwards;
      }
    }

    & .glow {
      animation:
        glow-flash 2.1s linear 3 forwards,
        glow-off 0.1s 6.3s ease-in-out forwards,
        glow-on 1s 7.2s ease-in-out forwards;
    }

    & .lightning-marquee {
      animation: glow-flash 2.1s linear 3;
    }

    & .text span {
      animation:
        text-depart 0.3s calc(var(--i) * 0.03s) ease forwards,
        text-return 0.3s calc((9 - var(--i)) * 0.03s + 4.2s) ease forwards,
        slide-scroll 0.5s calc(var(--i) * 0.02s + 7.7s) ease;
    }

    & ~ .bulb-wrapper {
      animation:
        bounce 0.7s 0.2s linear forwards,
        move 0.5s 1.8s ease-in-out forwards,
        rotation 0.5s 3s ease-in-out forwards,
        returning 0.5s 4.2s ease-in-out forwards;

      & .select {
        animation:
          show 0.1s 0.9s forwards,
          select 0.5s 0.9s linear forwards,
          hide 0.1s 1.6s forwards,
          show 0.1s 2.5s forwards,
          rotate 0.2s 2.6s ease-in-out forwards,
          hide 0.1s 2.8s forwards,
          rotate-cursor 0.5s 3s ease-in-out forwards,
          show 0.1s 3.7s forwards,
          return 0.2s 3.8s ease-in-out forwards,
          hide 0.1s 4s forwards,
          show 0.1s 4.8s forwards,
          fix 0.5s 4.9s ease-in-out forwards,
          hide 0.1s 5.4s forwards,
          fix2 0.2s 5.8s ease-in-out forwards,
          show 0.1s 6.4s forwards,
          back 0.2s 6.5s ease-in-out forwards,
          hide 0.1s 6.8s forwards;
      }

      & .move {
        animation:
          select 0.5s 0.9s linear forwards,
          show 0.1s 1.7s forwards,
          hide 0.1s 2.4s forwards,
          show 0.1s 4.1s forwards,
          hide 0.1s 4.7s forwards;
      }

      & .rotate {
        animation:
          select 0.5s 0.9s linear forwards,
          rotate 0.2s 2.6s ease-in-out forwards,
          show 0.1s 2.9s forwards,
          rotate-cursor 0.5s 3s ease-in-out forwards,
          hide 0.1s 3.6s forwards;
      }

      & .hammer {
        animation:
          fix 0.5s 4.9s ease-in-out forwards,
          hammer-set 0.1s 5.4s ease-in-out forwards,
          show 0.1s 5.5s forwards,
          fixing 0.2s 5.6s ease-in-out forwards,
          fix2 0.2s 5.8s ease-in-out forwards,
          fixing 0.2s 6s ease-in-out forwards,
          hide 0.1s 6.3s forwards;
      }

      & .lightbulb-off {
        animation:
          fixing 0.2s 6s ease-in-out forwards,
          back 0.2s 6.5s ease-in-out forwards,
          show 0.1s 6.9s forwards,
          squat 0.2s 7s ease-in-out forwards,
          hide 0.1s 7.2s forwards;
      }

      & .lightbulb-on {
        animation:
          back 0.2s 6.5s ease-in-out forwards,
          squat 0.2s 7s ease-in-out forwards,
          show 0.1s 7.3s forwards,
          jump 0.5s 7.4s ease-in-out forwards,
          out 0.5s 8s forwards;
      }

      &::before {
        animation:
          show 0.1s 1.5s forwards,
          hide 0.1s 5.05s forwards;
      }

      & .bulb::before {
        animation:
          under-shadow 0.1s 0.41s ease-in-out forwards,
          up-shadow 0.5s 3s ease-in-out forwards;
      }

      & .bulb::after {
        animation:
          under-shadow2 0.1s 0.41s ease-in-out forwards,
          up-shadow2 0.5s 3s ease-in-out forwards;
      }
    }
  }
}

.base {
  position: relative;
  width: 65px;
  height: 60px;
  background-color: #101522;
  border-radius: 40px 2px 2px 40px;
  box-shadow:
    inset 0 -5px 10px 0 #000000cc,
    inset 1px -10px 15px 1px #ffffff66;
  overflow: hidden;
  transition: all 0.2s ease-in-out;

  &::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 15px;
    width: 65px;
    height: 25px;
    background: linear-gradient(#fff, #e8edf7);
    border-radius: 30px;
    filter: blur(10px);
    opacity: 0.7;
  }

  &::after {
    content: "";
    position: absolute;
    right: 2px;
    width: 2px;
    height: 60px;
    background: linear-gradient(transparent 0%, #fff 30%, transparent 90%);
    filter: blur(1px);
  }
}

.filament {
  position: absolute;
  top: 50%;
  left: 45px;
  transform: translateY(-50%);
  z-index: -1;
}

.filament-glow path {
  stroke: url(#strokeGradient);
  stroke-width: 3;
  fill: none;
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
}

.glow {
  position: absolute;
  top: 50%;
  left: 65px;
  width: 35px;
  height: 40px;
  background-color: #ffe7a0;
  filter: blur(5px);
  border-radius: 0 50% 50% 0;
  z-index: -2;
  transform: translateY(-50%);
  opacity: 0;
  transition: all 0.2s ease-out;

  &::before {
    content: "";
    display: block;
    width: 150px;
    height: 60px;
    background: radial-gradient(circle at 0 50%, var(--glow) 40%, #ff9d0000);
    filter: blur(20px);
    border-radius: 5px 40px 40px 5px;
    z-index: -3;
    transform: translateY(-10px);
  }

  &::after {
    content: "";
    display: block;
    width: 60px;
    height: 40px;
    border: 3px solid orange;
    border-right: none;
    border-radius: 40%;
    transition: all 0.2s ease-in-out;
    transform: translate(-10px, -65px);
  }
}

.lightning-marquee {
  display: flex;
  width: 150px;
  mask-image: linear-gradient(
    to right,
    rgba(0, 0, 0, 0),
    rgba(0, 0, 0, 1) 20%,
    rgba(0, 0, 0, 1) 80%,
    rgba(0, 0, 0, 0)
  );
  overflow: hidden;
  border-radius: 5px 40px 40px 5px;
  opacity: 0;

  & > div {
    display: flex;
    flex-shrink: 0;
    width: 100%;
    transform: translateX(-100%);
    opacity: 0.3;
    animation: marquee 1s linear infinite;

    & > :nth-child(1) {
      animation: lightning-rotate-1 0.2s linear infinite;
    }

    & > :nth-child(2) {
      animation: lightning-rotate-2 0.2s linear infinite;
    }

    & > :nth-child(3) {
      animation: lightning-rotate-3 0.2s linear infinite;
    }

    & > :nth-child(4) {
      animation: lightning-rotate-4 0.2s linear infinite;
    }

    & > :nth-child(5) {
      animation: lightning-rotate-5 0.2s linear infinite;
    }
  }
}

.text {
  position: absolute;
  z-index: -1;
  top: 30%;
  left: 95px;
  color: var(--filament-grow);
  text-wrap: nowrap;
  letter-spacing: -0.1rem;
  user-select: none;
  transform: translateY(-50%);

  & span {
    display: inline-block;
    animation: slide-down 0.5s calc(var(--i) * 0.02s) ease;

    &:nth-of-type(3) {
      margin-right: 0.4em;
    }
  }
}

.bulb-wrapper {
  position: absolute;
  top: 50%;
  left: calc(50% + 32.5px);
  width: 150px;
  height: 60px;
  pointer-events: none;
  z-index: 3;
  transform: translate(-50%, -50%);

  &::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    border: 0.1rem solid dodgerblue;
    visibility: hidden;
  }
}

.bulb {
  position: relative;
  width: 150px;
  height: 60px;
  box-shadow:
    inset 0 1px 3px 0 #ffffff55,
    inset -1px -3px 5px 0 #ffffff55;
  border-radius: 5px 40px 40px 5px;
  overflow: hidden;

  &::before {
    content: "";
    position: absolute;
    top: 10px;
    left: -20px;
    width: 150px;
    height: 30px;
    background: linear-gradient(#fff, #ffffff22 80%);
    border-radius: 30px;
    box-shadow: 0 0 5px 10px #ffffff22;
    filter: blur(2px);
    opacity: 0.7;
  }

  &::after {
    content: "";
    position: absolute;
    top: 15px;
    left: -10px;
    width: 150px;
    height: 30px;
    border-radius: 30px;
    box-shadow: -1px 2px 2px 2px #ffffff44;
    filter: blur(2px);
    opacity: 0.7;
  }
}

.cursor {
  position: absolute;
  visibility: hidden;
  pointer-events: none;
}

.select {
  transform: scaleX(-1);
}

@keyframes drawLine {
  0% {
    stroke-dashoffset: 500;
  }

  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes light-on {
  from {
    stop-color: var(--filament);
  }

  to {
    stop-color: var(--filament-grow);
  }
}

@keyframes light-off {
  from {
    stop-color: var(--filament-grow);
  }

  to {
    stop-color: var(--filament);
  }
}

@keyframes flash {
  0% {
    stroke-dashoffset: 500;
  }

  10% {
    stroke-dashoffset: 0;
  }

  20% {
    stroke-dashoffset: 500;
  }

  30% {
    stroke-dashoffset: 0;
  }

  40% {
    stroke-dashoffset: 500;
  }

  70% {
    stroke-dashoffset: 0;
  }

  100% {
    stroke-dashoffset: 500;
  }
}

@keyframes fix-light {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes light-flash {
  0% {
    stop-color: var(--filament-grow);
  }

  10% {
    stop-color: var(--filament);
  }

  20% {
    stop-color: var(--filament-grow);
  }

  30% {
    stop-color: var(--filament);
  }

  40% {
    stop-color: var(--filament-grow);
  }

  70% {
    stop-color: var(--filament);
  }

  100% {
    stop-color: var(--filament-grow);
  }
}

@keyframes glow-flash {
  0% {
    opacity: 1;
  }

  5% {
    opacity: 0;
  }

  15% {
    opacity: 0;
  }

  20% {
    opacity: 1;
  }

  25% {
    opacity: 0;
  }

  35% {
    opacity: 0;
  }

  40% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }

  90% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes glow-on {
  to {
    opacity: 1;
  }
}

@keyframes glow-off {
  to {
    opacity: 0;
  }
}

@keyframes bounce {
  0% {
    transform: translate(-50%, -50%);
  }

  10% {
    top: 50%;
    left: 50%;
    transform: translate(50%, -40%) rotate(5deg);
  }

  30% {
    top: 60%;
    left: 100%;
    transform: translate(-100%, -50%) rotate(30deg);
  }

  50% {
    top: calc(100% - 40px);
    left: 70%;
    transform: translate(-50%, -50%) rotate(-180deg);
  }

  70% {
    top: 90%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-200deg);
  }

  80% {
    top: calc(100% - 40px);
    left: 40%;
    transform: translate(-50%, -50%) rotate(-180deg);
  }

  100% {
    top: calc(100% - 40px);
    left: 30%;
    transform: translate(-50%, -50%) rotate(-180deg);
  }
}

@keyframes show {
  to {
    visibility: visible;
  }
}

@keyframes hide {
  to {
    visibility: hidden;
  }
}

@keyframes select {
  from {
    top: 500%;
    left: -500%;
    transform: translateX(-50%) rotate(90deg);
  }

  to {
    top: 0;
    left: 50%;
    transform: translateX(-50%) rotate(90deg);
  }
}

@keyframes move {
  from {
    top: calc(100% - 40px);
    left: 30%;
    transform: translate(-50%, -50%) rotate(-180deg);
  }

  to {
    top: 50%;
    left: 80%;
    transform: translate(-50%, -50%) rotate(-180deg);
  }
}

@keyframes rotate {
  from {
    top: 0;
    left: 50%;
    transform: translateX(-50%) rotate(90deg);
  }

  to {
    top: 100%;
    left: 0;
    transform: translate(-75%, -75%) rotate(90deg);
  }
}

@keyframes rotation {
  from {
    transform: translate(-50%, -50%) rotate(-180deg);
  }

  to {
    transform: translate(-50%, -50%) rotate(0);
  }
}

@keyframes rotate-cursor {
  from {
    transform: translate(-75%, -75%) rotate(90deg);
  }

  to {
    transform: translate(-75%, -75%) rotate(-90deg);
  }
}

@keyframes return {
  from {
    top: 100%;
    left: 0;
  }

  to {
    top: 50%;
    left: 50%;
  }
}

@keyframes returning {
  from {
    top: 50%;
    left: 80%;
  }

  to {
    top: 50%;
    left: calc(50% + 32.5px);
  }
}

@keyframes fix {
  0% {
    top: 50%;
    left: 50%;
  }

  30% {
    top: -50%;
    left: 25%;
    transform: translate(-50%, -50%) rotate(-90deg);
  }

  70% {
    top: -50%;
    left: 25%;
    transform: translate(-50%, -50%) rotate(-90deg);
  }

  100% {
    top: 0;
    left: 0;
    transform: translate(-50%, -50%) rotate(-90deg);
  }
}

@keyframes fix2 {
  from {
    top: 0;
    left: 0;
    transform: translate(-50%, -50%) rotate(0);
  }

  to {
    top: 100%;
  }
}

@keyframes hammer-set {
  to {
    transform: translate(-50%, -50%) rotate(0);
  }
}

@keyframes fixing {
  0% {
    transform: translate(-50%, -50%) rotate(0);
  }

  25% {
    transform: translate(-50%, -50%) rotate(-50deg);
  }

  50% {
    transform: translate(-50%, -50%) rotate(50deg);
  }

  75% {
    transform: translate(-50%, -50%) rotate(-50deg);
  }

  100% {
    transform: translate(-50%, -50%) rotate(0);
  }
}

@keyframes back {
  to {
    top: -100%;
    left: 50%;
  }
}

@keyframes squat {
  to {
    transform: translate(-50%, 50%) rotate(-20deg) scaleY(0.5);
  }
}

@keyframes jump {
  50% {
    transform: translate(-50%, -100%) rotate(20deg) scale(1.5);
  }

  100% {
    transform: translate(-50%, -50%);
  }
}

@keyframes out {
  20% {
    top: -50%;
  }

  100% {
    top: -1000%;
    visibility: hidden;
  }
}

@keyframes text-depart {
  to {
    transform: translateX(2.5rem);
  }
}

@keyframes text-return {
  to {
    transform: translateX(0);
  }
}

@keyframes under-shadow {
  50% {
    opacity: 0;
  }

  100% {
    top: 20px;
    background: linear-gradient(#ffffff22 20%, #fff);
    opacity: 0.7;
  }
}

@keyframes under-shadow2 {
  50% {
    opacity: 0;
  }

  100% {
    box-shadow: none;
    opacity: 0.7;
  }
}

@keyframes up-shadow {
  50% {
    opacity: 0;
  }

  100% {
    top: 10px;
    background: linear-gradient(#fff, #ffffff22 80%);
    opacity: 0.7;
  }
}

@keyframes up-shadow2 {
  50% {
    opacity: 0;
  }

  100% {
    box-shadow: -1px 2px 2px 2px #ffffff44;
    opacity: 0.7;
  }
}

@keyframes lightning-rotate-1 {
  0% {
    transform: translate(5px, 5px) rotate(5deg);
  }

  25% {
    transform: translate(5px, 5px) rotate(-30deg);
  }

  50% {
    transform: translate(5px, 5px) rotate(5deg);
  }

  75% {
    transform: translate(5px, 5px) rotate(35deg);
  }

  100% {
    transform: translate(5px, 5px) rotate(5deg);
  }
}

@keyframes lightning-rotate-2 {
  0% {
    transform: translate(10px, 40px) rotate(30deg);
  }

  25% {
    transform: translate(10px, 40px) rotate(0);
  }

  50% {
    transform: translate(10px, 40px) rotate(30deg);
  }

  75% {
    transform: translate(10px, 40px) rotate(60deg);
  }

  100% {
    transform: translate(10px, 40px) rotate(30deg);
  }
}

@keyframes lightning-rotate-3 {
  0% {
    transform: translate(10px, 10px) rotate(5deg);
  }

  25% {
    transform: translate(10px, 10px) rotate(-30deg);
  }

  50% {
    transform: translate(10px, 10px) rotate(5deg);
  }

  75% {
    transform: translate(10px, 10px) rotate(35deg);
  }

  100% {
    transform: translate(10px, 10px) rotate(5deg);
  }
}

@keyframes lightning-rotate-4 {
  0% {
    transform: translate(20px, 35px) rotate(5deg);
  }

  25% {
    transform: translate(20px, 35px) rotate(-30deg);
  }

  50% {
    transform: translate(20px, 35px) rotate(5deg);
  }

  75% {
    transform: translate(20px, 35px) rotate(35deg);
  }

  100% {
    transform: translate(20px, 35px) rotate(5deg);
  }
}

@keyframes lightning-rotate-5 {
  0% {
    transform: translate(35px, 5px) rotate(30deg);
  }

  25% {
    transform: translate(35px, 5px) rotate(0);
  }

  50% {
    transform: translate(35px, 5px) rotate(30deg);
  }

  75% {
    transform: translate(35px, 5px) rotate(60deg);
  }

  100% {
    transform: translate(35px, 5px) rotate(30deg);
  }
}

@keyframes marquee {
  to {
    transform: translateX(0);
  }
}

@keyframes slide-down {
  0% {
    transform: translateY(0);
  }

  33% {
    opacity: 0;
    transform: translateY(0.5rem);
  }

  66% {
    opacity: 1;
    transform: translateY(-0.5rem);
  }

  100% {
    transform: translateY(0);
  }
}

@keyframes slide-scroll {
  0% {
    transform: translateY(0);
  }

  33% {
    opacity: 0;
    transform: translateY(-1rem);
  }

  66% {
    opacity: 0;
    transform: translateY(1rem);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}