/* Animação do Envelope */
.letter-image {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 30px;
  cursor: pointer;
}

.animated-mail {
  position: absolute;
  height: 150px;
  width: 200px;
  -webkit-transition: 0.4s;
  -moz-transition: 0.4s;
  transition: 0.4s;
}

.animated-mail .body {
  position: absolute;
  bottom: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 0 100px 200px;
  border-color: transparent transparent var(--primary-color) transparent;
  z-index: 2;
}

.animated-mail .top-fold {
  position: absolute;
  top: 50px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 50px 100px 0 100px;
  -webkit-transform-origin: 50% 0%;
  -webkit-transition: transform 0.4s 0.4s, z-index 0.2s 0.4s;
  -moz-transform-origin: 50% 0%;
  -moz-transition: transform 0.4s 0.4s, z-index 0.2s 0.4s;
  transform-origin: 50% 0%;
  transition: transform 0.4s 0.4s, z-index 0.2s 0.4s;
  border-color: var(--primary-color) transparent transparent transparent;
  z-index: 2;
}

.animated-mail .back-fold {
  position: absolute;
  bottom: 0;
  width: 200px;
  height: 100px;
  background: var(--primary-color);
  z-index: 0;
}

.animated-mail .left-fold {
  position: absolute;
  bottom: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 50px 0 50px 100px;
  border-color: transparent transparent transparent var(--primary-color);
  z-index: 2;
}

.animated-mail .letter {
  left: 20px;
  bottom: 0px;
  position: absolute;
  width: 160px;
  height: 60px;
  background: white;
  z-index: 1;
  overflow: hidden;
  -webkit-transition: 0.4s 0.2s;
  -moz-transition: 0.4s 0.2s;
  transition: 0.4s 0.2s;
}

.animated-mail .letter .letter-border {
  height: 10px;
  width: 100%;
  background: repeating-linear-gradient(
    -45deg,
    var(--primary-color),
    var(--primary-color) 8px,
    transparent 8px,
    transparent 18px
  );
}

.animated-mail .letter .letter-title {
  margin-top: 10px;
  margin-left: 5px;
  height: 10px;
  width: 40%;
  background: var(--primary-color);
}

.animated-mail .letter .letter-context {
  margin-top: 10px;
  margin-left: 5px;
  height: 10px;
  width: 20%;
  background: var(--primary-color);
}

.animated-mail .letter .letter-stamp {
  margin-top: 30px;
  margin-left: 120px;
  border-radius: 100%;
  height: 30px;
  width: 30px;
  background: var(--primary-color);
  opacity: 0.3;
}

.shadow {
  position: absolute;
  top: 165px;
  left: 50%;
  width: 400px;
  height: 30px;
  transition: 0.4s;
  transform: translateX(-50%);
  -webkit-transition: 0.4s;
  -webkit-transform: translateX(-50%);
  -moz-transition: 0.4s;
  -moz-transform: translateX(-50%);
  border-radius: 100%;
  background: radial-gradient(
    rgba(0, 0, 0, 0.2),
    rgba(0, 0, 0, 0),
    rgba(0, 0, 0, 0)
  );
}

.letter-image:hover .animated-mail {
  transform: translateY(50px);
  -webkit-transform: translateY(50px);
  -moz-transform: translateY(50px);
}

.letter-image:hover .animated-mail .top-fold {
  transition: transform 0.4s, z-index 0.2s;
  transform: rotateX(180deg);
  -webkit-transition: transform 0.4s, z-index 0.2s;
  -webkit-transform: rotateX(180deg);
  -moz-transition: transform 0.4s, z-index 0.2s;
  -moz-transform: rotateX(180deg);
  z-index: 0;
}

.letter-image:hover .animated-mail .letter {
  height: 180px;
}

.letter-image:hover .shadow {
  width: 250px;
  top: 195px;
}

/* Estilos para quando a carta está ativa (usuário digitando no formulário) */
.letter-image.active .animated-mail {
  transform: translateY(50px);
  -webkit-transform: translateY(50px);
  -moz-transform: translateY(50px);
}

.letter-image.active .animated-mail .top-fold {
  transition: transform 0.4s, z-index 0.2s;
  transform: rotateX(180deg);
  -webkit-transition: transform 0.4s, z-index 0.2s;
  -webkit-transform: rotateX(180deg);
  -moz-transition: transform 0.4s, z-index 0.2s;
  -moz-transform: rotateX(180deg);
  z-index: 0;
}

.letter-image.active .animated-mail .letter {
  height: 180px;
}

.letter-image.active .shadow {
  width: 250px;
  top: 195px;
}

/* Estilos para quando a carta está sendo enviada */
.letter-image.sending .animated-mail {
  animation: flyAway 1.5s forwards;
  -webkit-animation: flyAway 1.5s forwards;
  -moz-animation: flyAway 1.5s forwards;
}

.letter-image.sending .shadow {
  animation: shadowFade 1.5s forwards;
  -webkit-animation: shadowFade 1.5s forwards;
  -moz-animation: shadowFade 1.5s forwards;
}

@keyframes flyAway {
  0% {
    transform: translateY(50px);
  }
  20% {
    transform: translateY(30px);
  }
  100% {
    transform: translateY(-500px) scale(0.5) rotate(10deg);
  }
}

@-webkit-keyframes flyAway {
  0% {
    -webkit-transform: translateY(50px);
  }
  20% {
    -webkit-transform: translateY(30px);
  }
  100% {
    -webkit-transform: translateY(-500px) scale(0.5) rotate(10deg);
  }
}

@-moz-keyframes flyAway {
  0% {
    -moz-transform: translateY(50px);
  }
  20% {
    -moz-transform: translateY(30px);
  }
  100% {
    -moz-transform: translateY(-500px) scale(0.5) rotate(10deg);
  }
}

@keyframes shadowFade {
  0% {
    width: 250px;
    top: 195px;
    opacity: 1;
  }
  20% {
    width: 300px;
    top: 185px;
    opacity: 0.8;
  }
  100% {
    width: 50px;
    top: 165px;
    opacity: 0;
  }
}

@-webkit-keyframes shadowFade {
  0% {
    width: 250px;
    top: 195px;
    opacity: 1;
  }
  20% {
    width: 300px;
    top: 185px;
    opacity: 0.8;
  }
  100% {
    width: 50px;
    top: 165px;
    opacity: 0;
  }
}

@-moz-keyframes shadowFade {
  0% {
    width: 250px;
    top: 195px;
    opacity: 1;
  }
  20% {
    width: 300px;
    top: 185px;
    opacity: 0.8;
  }
  100% {
    width: 50px;
    top: 165px;
    opacity: 0;
  }
}

/* Ajustes responsivos */
@media screen and (max-width: 992px) {
  .letter-image {
    margin: 40px auto;
  }
}

@media screen and (max-width: 768px) {
  .letter-image {
    margin: 30px auto;
    transform: scale(0.9);
  }
}

@media screen and (max-width: 576px) {
  .letter-image {
    transform: scale(0.8);
  }
}