@font-face {
  font-family: VALORANT;
  src: url(../fonts/VALORANT-Regular.ttf);
}

:root {
  --transform-length: translateX(calc(-122px * 300));
  --primary-color: #ff4757;
  --primary-hover: #e32b39;
  --background-start: #0f0f12;
  --background-end: #1a1a1f;
  --glow-color: rgba(255, 71, 87, 0.5);
  --overlay-dark: rgba(15, 15, 18, 0.95);
}

body {
  font-family: Roboto, sans-serif;
  background: var(--background-start);
  color: #fff;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  overflow-x: hidden;
}

main {
  display: flex;
  height: 100vh;
  overflow: clip;
  justify-content: center;
  align-items: center;
  gap: 10rem;
}

footer {
  background: var(--background-end);
  color: #fff;
  padding-left: 2.5rem;
  display: flex;
  justify-content: left;
  align-items: center;
  height: 4rem;
}

footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

footer a:hover {
  color: var(--primary-hover);
  text-decoration: var(--primary-hover) underline;
  font-weight: 600;
}

#header {
  display: flex;
  justify-content: left;
  align-items: center;
  padding-left: 2.5rem;
  padding-top: 0.5rem;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  position: fixed;
  width: 100%;
  z-index: 1000;
  height: 4rem;
}

#header h1 {
  font-family: VALORANT, sans-serif;
  font-size: 2rem;
  margin: 0;
  padding: 0;
  color: var(--primary-color);
}

/* ------ Slider ------ */

.slider {
  position: absolute;
  width: 80vw;
  height: 10vw;
  transform-style: preserve-3d;
  animation: rotate 3s cubic-bezier(0, 0, 0, 1);
  /*animation: rotate 500s infinite linear;*/
}

.slider .card-wrap {
  position: absolute;
  inset: 0;
  transform: /* 72 deg is 5 card to the right*/ rotateY(
      calc((var(--position) - 1) * (360 / var(--quantity)) * 1deg)
    )
    translateZ(1920px);
}

@keyframes rotate {
  0% {
    transform: rotateY(0deg);
  }
  100% {
    /* 72 deg is 5 card to the right*/
    transform: rotateY(calc(-2160deg));
  }
}

/* ------ Card ------ */

.card-wrap {
  display: grid;
  place-content: center;
  inset: 0;
  transform-style: preserve-3d;
  perspective: 800px;
}

.card {
  border-radius: 1.5rem;
  backface-visibility: hidden;
  border: var(--primary-color) 2px solid;
  aspect-ratio: 9 / 16;
  height: 600px;
  background: url(../img/card-backgrounds/card-background-1.svg);
  background-size: cover;
  box-shadow: 50px 50px 30px rgba(0, 0, 0, 0.3);
  transform: rotateX(calc(10deg - (20deg * var(--random-rotation-x))))
    rotateY(calc(10deg - (20deg * var(--random-rotation-y))));
}

.card img {
  width: 150%;
  justify-self: center;
  align-self: center;
  height: 90%;
  object-fit: cover;
}

.card-content {
  border-radius: 1.5rem;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  overflow: hidden;
  backdrop-filter: blur(1px);
  position: relative;
}

.card-content::after {
  content: "Click to reset";
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--overlay-dark);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.chosen-card .card-content::after {
  opacity: 1;
}

.card h1 {
  font-family: VALORANT, sans-serif;
  padding: 1rem;
  font-size: 2rem;
  margin: 0;
  text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.5);
  position: absolute;
  bottom: 0;
}

.card-back {
  display: flex;
  justify-content: center;
  align-items: center;
  transform: rotateY(180deg);
  backface-visibility: hidden;
}

.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 1.5rem;
  border: var(--primary-color) 2px solid;
}

.card-front {
  background-size: cover;
  box-shadow: 50px 50px 30px rgba(0, 0, 0, 0.3);
}

@media (max-height: 800px) {
  .card {
    height: 400px;
  }
}

@media (max-height: 1200px) and (min-height: 801px) {
  .card {
    height: 500px;
  }
}

@media (max-height: 1600px) and (min-height: 1201px) {
  .card {
    height: 600px;
  }
}

.chosen-card {
  transform: rotateY(0deg) translateZ(200px);
  transition: transform 1s;
  -webkit-box-shadow: 0 0 69px 20px var(--glow-color);
  -moz-box-shadow: 0 0 69px 20px var(--glow-color);
  box-shadow: 0 0 69px 20px var(--glow-color);
}

/* */ /* ------ Buttons ------ */

button {
  margin: 1rem;
  padding: 1rem;
  border: none;
  background: var(--primary-color);
  color: #fff;
  font-weight: 600;
  border-radius: 1rem;
  cursor: pointer;
  transition: background 0.3s;
  width: 10rem;
  height: 3rem;
  z-index: 100;
}

button:hover {
  background: var(--primary-hover);
}

#restart {
  margin-top: 35vw;
  display: none;
}

/*
 * some inspitarion from
 * https://kushagra.dev/blog/css-only-3d-card/
 * https://www.youtube.com/watch?v=yqaLSlPOUxM

 */