@import url("https://fonts.googleapis.com/css2?family=Tilt+Neon&display=swap");

:root {
  --cor-principal: #14fff1;
  --cor-fundo: #202631;
  --cor-sombra: rgba(255, 255, 255, 0.3);
  --sombra: 0 0 8px rgba(255, 255, 255, 0.3), 0 0 29px #14fff1;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Tilt Neon", sans-serif;
  color: var(--cor-principal);
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
  background-color: var(--cor-fundo);
  overflow: hidden;
}

#calc {
  background-color: var(--cor-fundo);
  border: 3px solid var(--cor-principal);
  border-radius: 10px;
  padding: 5px;
  margin: 5px;
  width: 375px;
  height: 567px;
  display: grid;
  grid-template-rows: repeat(2, 1fr);
  position: relative;
}

/* Iluminação inferior da calculadora */
#calc::before {
  pointer-events: none;
  content: "";
  position: absolute;
  background-color: var(--cor-principal);
  width: 300px;
  height: 467px;
  left: 40px;
  top: 330px;
  transform: perspective(64px) rotateX(40deg) scale(1, 0.1);
  filter: blur(64px);
  opacity: 0.4;
  z-index: -1;
}

/* Iluminção no fundo da calculadora */
#calc::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--cor-principal);
  box-shadow: 0 0 128px 32px var(--cor-principal);
  opacity: 0.2;
  z-index: -1;
}

/* Display */
#operations {
  text-align: right;
  margin-bottom: 5px;
  border-radius: 5px;
}

#previous-operation {
  padding: 0.2em;
  overflow-wrap: break-word;
  min-height: 1.6em;
  font-size: 1.5em;
}

#current-operation {
  min-height: 1.6em;
  font-size: 3em;
  padding: 0.2em;
  overflow-wrap: break-word;
}

/* Botões */
#buttons-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(5, 1fr);
  gap: 5px;
}

#buttons-container button {
  border: 2px solid var(--cor-principal);
  border-radius: 5px;
  height: 3em;
  font-size: 1.5em;
  background-color: transparent;
  cursor: pointer;
  position: relative;
}

/* Classe de iluminação no clique do botão */
#buttons-container button.efeitoClique::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--cor-principal);
  box-shadow: 0 0 128px 32px var(--cor-principal);
  z-index: 0;
  animation: iluminar 1.5s;
}

/* Animação que ilumina os botões */
@keyframes iluminar {
  0% {
    opacity: 0.8;
  }
  100% {
    opacity: 0;
  }
}

#buttons-container .operator {
  font-size: 2em;
  height: 2.3em;
}

.operator[data-operador="÷"],
.operator[data-operador="vezes"] {
  position: relative;
}

.operator[data-operador="÷"] > span,
.operator[data-operador="vezes"] > span {
  opacity: 0;
  position: absolute;
}

.operator[data-operador="÷"]::after {
  content: "÷";
}

.operator[data-operador="vezes"]::after {
  content: "x";
}

[data-funcao="igual"] {
  grid-column: -1/-3;
}

.neon {
  text-shadow: var(--sombra);
}

.texto-neon {
  text-shadow: var(--sombra);
  box-shadow:
    inset 0 0 12px var(--cor-principal),
    0 0 12px var(--cor-principal);
}

.animate__animated.animate__rubberBand {
  --animate-duration: 0.5s;
}