@import url("https://fonts.googleapis.com/css2?family=DotGothic16&family=Foldit:wght@100..900&family=Margarine&family=Mystery+Quest&family=Roboto:ital,wght@0,100;0,300;0,400;0,500&family=Shantell+Sans:ital,wght@0,300..800;1,300..800&display=swap");

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-family: Roboto, sans-serif;
  font-weight: 500;
  background: #353535;
  z-index: -10;
  margin: 0;
  overflow: hidden;
  background-size: 100% 100%;
  min-height: 100vh;
}

/* color reference https://uigradients.com/#Martini  */
.colorfulBG {
  background: linear-gradient(
    -45deg,
    #360033,
    #0b8793,
    #a83279,
    #948e99,
    #d38312,
    #fdfc47,
    #24f141
  );
  background-size: 400% 400%;
  animation: gradientAnimation 30s ease infinite;
}

@keyframes gradientAnimation {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

h1 {
  font-family: "Mystery Quest";
  -webkit-text-stroke: 2px rgba(255, 255, 255, 1);
  text-shadow: 3px 5px 20px rgba(255, 255, 255, 1);
  transition: all 0.5s ease;
  font-size: 2em;
  margin-bottom: 0;
}

label {
  color: white;
  text-align: left;
}

form {
  display: flex;
  opacity: 0;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  row-gap: 1.5em;
  padding: 2.5%;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border-radius: 14px;
  margin-bottom: 2em;
  width: 90%;
  max-width: 600px;
  box-sizing: border-box;
}

#music {
  display: none;
}

.container,
.button {
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  align-items: center;
  flex-wrap: wrap;
  column-gap: 1em;
  position: relative;
}

.luckySnowflake,
.container {
  margin-top: 0.5em;
}

.snow-img {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.snow {
  width: 23em;
  height: 15em;
  max-width: 100%;
}

.card {
  width: 6em;
  height: 6em;
  max-width: 100%;
  transform-style: preserve-3d;
  transition: all 0.5s ease;
  border: whitesmoke 0.5em solid;
  position: relative;
}

.card.flipped {
  transform: rotateY(180deg);
  animation-delay: 1s;
}

.card.focus {
  box-shadow: 0 0 1.5em orange;
  border: #f42222 0.5em solid;
  overflow: hidden;
}

.card.selected {
  box-shadow: 0 0 1.5em #f42222;
  border: orange 0.5em solid;
}

.snowSelected {
  animation: snowRotate 4s linear infinite 0.5s !important;
}

@keyframes snowRotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* when start raffle, front will cover */
.front {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  background: antiquewhite;
  color: #353535;
  display: flex;
  justify-content: center;
  transform: rotateY(180deg);
  align-items: center;
  font-family: "DotGothic16", sans-serif;
  font-size: larger;
}

/* show back card as default */
.back {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  background: #353535;
  overflow: hidden;
}

.card .back img {
  width: 5em;
  height: 5em;
  max-width: 100%;
  transform-style: preserve-3d;
  animation-delay: 1s;
  filter: drop-shadow(0 0 5px #01b4f9);
}

input[type="color"] {
  padding: 0;
  outline: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  cursor: pointer;
}

/* Different animation on showflake: */
.card:nth-child(1) .back:hover img {
  animation: spinSpeed 5s linear infinite;
}

.card:nth-child(2) .back:hover img {
  animation: bounceAround 5s linear infinite;
}

.card:nth-child(3) .back:hover img {
  animation: rotateMove 5s linear infinite;
}

.card:nth-child(4) .back:hover img {
  animation: flipScale 5s linear infinite;
}

.card:nth-child(5) .back:hover img {
  animation: skewScale 5s linear infinite;
}

.card:nth-child(6) .back:hover img {
  animation: flipMove 5s linear infinite;
}

@keyframes spinSpeed {
  0% {
    transform: rotate(0deg) translateY(-50px) translateX(0px);
  }

  25% {
    transform: rotate(180deg) translateY(-25px) translateX(-35px);
  }

  50% {
    transform: rotate(360deg) translateY(0px) translateX(-35px);
  }

  75% {
    transform: rotate(1020deg) translateY(0px) translateX(0px);
  }

  100% {
    transform: rotate(1050deg) translateY(-35px) translateX(0px);
  }
}

@keyframes rotateMove {
  0%,
  100% {
    transform: rotateX(0deg) translateX(-15px);
  }

  25% {
    transform: rotateX(180deg) translateX(0px);
  }

  50% {
    transform: rotateX(0deg) translateX(15px);
  }

  75% {
    transform: rotateX(180deg) translateX(0px);
  }
}

@keyframes flipScale {
  0%,
  100% {
    transform: rotateX(0deg) rotateY(0deg) scale(2);
  }

  50% {
    transform: rotateX(180deg) rotateY(180deg) scale(0.5);
  }
}

@keyframes flipMove {
  0% {
    transform: translateX(-20px) translateY(-20px);
  }

  1% {
    transform: translateX(-20px) translateY(-20px) rotateY(180deg);
  }

  25% {
    transform: translateX(-20px) translateY(20px);
  }

  26% {
    transform: translateX(-20px) translateY(20px) rotateX(180deg);
  }

  50% {
    transform: translateX(20px) translateY(20px);
  }

  51% {
    transform: translateX(20px) translateY(20px) rotateY(180deg);
  }

  75% {
    transform: translateX(20px) translateY(-20px);
  }

  76% {
    transform: translateX(20px) translateY(-20px) rotateX(180deg);
  }

  99% {
    transform: translateX(-20px) translateY(-20px);
  }

  100% {
    transform: translateX(-20px) translateY(-20px) rotateY(180deg);
  }
}

@keyframes skewScale {
  0%,
  100% {
    transform: translateX(-50px) skewX(0deg) scale(1.8);
  }

  50% {
    transform: translateX(35px) skewX(50deg) scale(0.7);
  }

  70% {
    transform: translateX(-20px) skewY(-50deg) scale(1.8);
  }

  90% {
    transform: translateX(0px) skewY(0deg) scale(0.7);
  }
}

@keyframes bounceAround {
  0% {
    transform: translateY(0);
  }

  20% {
    transform: translateY(-40px) rotate(0deg) scale(1);
  }

  25% {
    transform: translateY(20px) rotate(0deg) scale(0.6);
  }

  35%,
  55% {
    transform: translateY(0px) rotate(0deg) scale(1);
  }

  60% {
    transform: translateY(-40px) rotate(0deg) scale(1.5);
  }

  100% {
    transform: translateY(-5px) rotate(360deg) scale(1);
  }
}

/*https://codepen.io/yuhomyan/pen/OJMejWJ */
button {
  background: #fb4b02;
  border: none;
  z-index: 1;
  padding: 15px 20px;
  width: 200px;
  max-width: 100%;
  height: 40px;
  color: #fff;
  font-size: 13px;
  border-radius: 8px;
  padding: 10px 25px;
  transition: 0.5s ease-in-out;
  position: relative;
  display: inline-block;
  box-shadow: 4px 4px 5px 0px rgba(0, 0, 0, 0.1);
  outline: none;
  cursor: pointer;
}

button:after {
  position: absolute;
  content: "";
  width: 0;
  height: 100%;
  top: 0;
  right: 0;
  z-index: -1;
  background-color: #f42222;
  border-radius: 5px;
  box-shadow: 7px 7px 20px 0px rgba(0, 0, 0, 0.1);
  transition: 0.5s ease-in-out;
}

button:hover {
  color: #fff;
  transform: scale(1.05);
}

button:hover:after {
  left: 0;
  width: 100%;
}

button:active {
  color: darkgray;
  top: 0.5px;
}

.plane {
  width: 1.8em;
  position: absolute;
  left: 160px;
  top: 20px;
  transform: translateY(-50%);
  transition: transform 0.5s ease-in-out;
  z-index: 10;
}

.submit:hover .plane {
  transform: rotate(-10deg) translateY(-80%);
  transform-origin: top right;
}

/* the paperplan flies away when submit the choice https://codepen.io/adelbalso/pen/qBjgGP */
@keyframes flyaway {
  0% {
    transform: translate(-50%, -50%) rotate(0deg) translateX(100px) rotate(0deg);
    transform-origin: center center;
  }

  25% {
    transform: translate(-50%, -50%) rotate(90deg) translateX(100px)
      rotate(-90deg);
  }

  50% {
    transform: translate(-50%, -50%) rotate(180deg) translateX(100px)
      rotate(-180deg);
  }

  75% {
    transform: translate(-50%, -50%) rotate(270deg) translateX(100px)
      rotate(-270deg);
    opacity: 1;
    transform-origin: bottom right;
  }

  100% {
    transform: translate(800px, -700px);
    opacity: 0;
  }
}

/* get font color 
https://codepen.io/selo0645/pen/ZEywbLa */

.get-color {
  font-family: "Mystery Quest";
  background-image: linear-gradient(
    135deg,
    rgb(255, 59, 48),
    rgb(255, 149, 0),
    rgb(255, 204, 0)
  );
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
}

#theme {
  text-align: center;
  width: 100%;
  /* overflow: hidden; */
  white-space: nowrap;
  font-size: 2em;
  /*     padding: 20px 0; */
  transition: all 1s ease-out;
}

#theme span {
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  margin-right: 0.1em;
}

.showup-animation {
  animation: showup 0.5s forwards;
}

@keyframes showup {
  0% {
    transform: translateY(50px) rotate(15deg);
    opacity: 0;
  }

  20% {
    transform: translateY(25px) rotate(12deg);
    opacity: 0.7;
  }

  40% {
    transform: translateY(10px) rotate(9deg) scale(1);
    opacity: 1;
  }

  60% {
    transform: translateY(-20px) rotate(6deg) scale(1.2);
    opacity: 1;
  }

  80% {
    transform: translateY(-10px) rotate(3deg) scale(1.5);
    opacity: 1;
  }

  100% {
    transform: translateY(0px) translateX(0px) scale(1);
    background-image: linear-gradient(
      135deg,
      rgb(255, 149, 0),
      rgb(255, 59, 48),
      rgb(255, 204, 0)
    );
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    opacity: 1;
  }
}

.validBox {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 40em;
  height: 20%;
  background-color: whitesmoke;
  border: 0.5em #f42222 solid;
  display: none;
  margin: auto;
  transform: translate(-50%, -50%);
  z-index: 99;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
  flex-direction: column;
  justify-content: space-between;
  padding: 1em;
  align-items: center;
}

.validBox button {
  margin: 1em;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.top-appear {
  display: flex;
  animation: top-appear 1.5s forwards 1s;
}

@keyframes top-appear {
  0% {
    opacity: 0;
    transform: translateY(0);
  }

  100% {
    opacity: 1;
    transform: translateY(20px);
  }
}

.disappear {
  animation: disappear 1.5s forwards;
  pointer-events: none;
  display: flex;
}

@keyframes disappear {
  0% {
    opacity: 1;
    transform: translateY(0);
  }

  100% {
    opacity: 0;
    transform: translateY(20px);
  }
}

.leftappear {
  animation: leftappear 1.5s both 3s;
}

.rightappear {
  animation: rightappear 2s both 4s;
}

.leftappear2 {
  animation: leftappear 2s both 5s;
}

.color,
.snow-img,
.button {
  opacity: 0;
}

@keyframes leftappear {
  0% {
    opacity: 0;
    transform: translateX(100px);
  }

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

@keyframes rightappear {
  0% {
    opacity: 0;
    transform: translateX(-100px);
  }

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

/* https://blog.teamtreehouse.com/css-sprite-sheet-animations-steps */
.snowpage {
  position: fixed;
  margin: auto;
  width: 258.5px; /* 517  */
  height: 348.5px; /* 695 */
  background: url("../img/sprite.png") left bottom;
  background-size: cover;
  animation: snowman 4s steps(7) infinite;
  display: none;
  opacity: 1;
  transition: all 0.3s ease;
  flex-direction: column;
  row-gap: 1em;
  align-items: center;
}

#playAgain {
  margin-top: -3em;
}
@keyframes snowman {
  100% {
    background-position: -1804.02px;
  }
}

/* the animation is not good
@keyframes snowman {
    0%,100% {
        background: url("..img/1.png");
        background-size: cover;
    }

    17% {
        background: url("../img/2.png");
        background-size: cover;
    }
    34% {
        background: url("../img/3.png");
        background-size: cover;
    }
    51% {
        background: url("../img/4.png");
        background-size: cover;
    }
    68% {
        background: url("../img/3.png");
        background-size: cover;
    }
    84% {
        background: url("../img/2.png");
        background-size: cover;
    }
}
 */

/* js-create selected snowflake elements and call the animation when submitting the form */
.wrapper .selectedShape img {
  position: absolute;
  width: 30px;
  height: 30px;
  /* background: url("/img/2.svg") no-repeat center center; */
  /* UPDATE */
  /*   overflow: hidden; */
  /* background-size: contain; */
  opacity: 0;
  filter: drop-shadow(0 0 100px #01b4f9) drop-shadow(0 0 20px #01b4f9)
    drop-shadow(0 0 50px #01b4f9);
  /* 	box-shadow: 0 0 100px 0.9 #01b4f9, 0 0 10px 0.6 #01b4f9, 0 0 20px 0.4 #01b4f9; */
  animation: animate 4s linear infinite 2s, ani-2 2s linear infinite 2s;
}

.wrapper .selectedShape:nth-child(1) img {
  left: 5%;
  animation-delay: 0.5s;
}

.wrapper .selectedShape:nth-child(2) img {
  left: 65%;
  animation-delay: 1s;
}

.wrapper .selectedShape:nth-child(3) img {
  left: 90%;
  animation-delay: 1.5s;
}

.wrapper .selectedShape:nth-child(4) img {
  left: 18%;
  animation-delay: 2s;
}

.wrapper .selectedShape:nth-child(5) img {
  left: 93%;
  animation-delay: 2.5s;
}

.wrapper .selectedShape:nth-child(6) img {
  left: 52%;
  animation-delay: 3s;
}

.wrapper .selectedShape:nth-child(7) img {
  left: 65%;
  animation-delay: 3.5s;
}

.wrapper .selectedShape:nth-child(8) img {
  left: 35%;
  animation-delay: 4s;
}

.wrapper .selectedShape:nth-child(9) img {
  left: 85%;
  animation-delay: 4.5s;
}

.wrapper .selectedShape:nth-child(10) img {
  left: 45%;
  animation-delay: 5s;
}

.wrapper .selectedShape:nth-child(11) img {
  left: 36%;
  animation-delay: 5.5s;
}

.wrapper .selectedShape:nth-child(12) img {
  left: 72%;
  animation-delay: 6s;
}

.wrapper .selectedShape:nth-child(13) img {
  left: 14%;
  animation-delay: 6.5s;
}

.wrapper .selectedShape:nth-child(14) img {
  left: 70%;
  animation-delay: 7s;
}

@keyframes animate {
  0% {
    top: 0;
    opacity: 1;
  }

  20% {
    top: 20%;
    opacity: 0.8;
  }

  40% {
    top: 40%;
    opacity: 0.6;
  }

  60% {
    top: 60%;
    opacity: 0.4;
  }

  80% {
    top: 80%;
    opacity: 0.2;
  }

  100% {
    top: 100%;
    opacity: 0;
  }
}

@keyframes ani-2 {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(2.5);
  }
}

/* 
https://codepen.io/leomanlapera/pen/JWLgzd */

@media screen and (max-width: 768px) {
  form {
    display: flex;
    flex-direction: column;
    row-gap: 1em;
    padding: 1em;
    margin-bottom: 1.5em;
  }

  .container {
    display: flex;
    row-gap: 0.8em;
  }

  .card {
    flex-basis: 35%;
  }

  .button {
    margin-top: 7.5em;
  }

  button {
    width: 150px;
    max-width: 100%;
  }
  .submit {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    row-gap: 1em;
  }

  .validBox {
    width: 80%;
  }
}

@media screen and (max-width: 568px) {
  form {
    row-gap: 0.3em;
    margin-bottom: 0.6em;
    width: 95%;
    height: auto;
    min-height: fit-content;
    padding: 0.5em;
  }
  form * {
    width: 100%;
    box-sizing: border-box;
  }

  .card {
    flex-basis: 50%;
    height: 5em;
    max-height: 100%;
  }

  .snow-img {
    margin-bottom: 20em;
  }
  .button,
  .process {
    display: flex;
    flex-direction: column;
    row-gap: 0.3em;
    margin: 0.1em;
  }

  .process button {
    flex-basis: 40%;
    margin: auto 1em;
  }

  .submit {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    row-gap: 0.2em;
  }

  .validBox {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    width: 90%;
    height: auto;
    min-height: fit-content;
    padding: 0.4em;
    margin-top: 1em;
  }
  .alert {
    font-size: 12px;
    min-height: 3em;
  }
  .validBox * {
    width: 100%;
    box-sizing: border-box;
  }
}