.wrapper {
  --input-focus: #2d8cf0;
  --font-color: #ffffff;
  --font-color-sub: #6f7d8a;
  --bg-color: #1E2E3D;
  --bg-color-alt: #666;
  --main-color: #323232;
}

body {
  display: grid;
  place-items: center;
  height: 90vh;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #1E2E3D;
  align-content: center;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.switch {
  transform: translateY(-200px);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 30px;
  width: 50px;
  height: 20px;
}

.card-side::before {
  position: absolute;
  content: "Log In";
  top: 0;
  left: -70px;
  width: 100px;
  color: var(--font-color);
  font-weight: 600;
  text-decoration: underline;
  transition: 0.3s;
}

.card-side::after {
  position: absolute;
  content: "Sign Up";
  top: 0;
  left: 70px;
  width: 100px;
  color: var(--font-color);
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s;
}

.toggle {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  border-radius: 5px;
  border: 2px solid var(--main-color);
  box-shadow: 4px 4px var(--main-color);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #fff;
  transition: 0.3s;
}

.slider::before {
  content: "";
  position: absolute;
  height: 17px;
  width: 20px;
  left: -2px;
  bottom: 2px;
  border: 2px solid var(--main-color);
  box-shadow: 0 3px 0 var(--main-color);
  border-radius: 5px;
  transition: 0.3s;
  background-color: #fff;
}

.toggle:checked + .slider {
  background-color: var(--input-focus);
}
.toggle:checked + .slider::before {
  transform: translateX(30px);
  background-color: var(--input-focus);
}
.toggle:checked ~ .card-side::before {
  text-decoration: none;
}
.toggle:checked ~ .card-side::after {
  text-decoration: underline;
}

/* card */

.flip-card__inner {
  width: 300px;
  height: 350px;
  position: relative;
  background-color: transparent;
  perspective: 1000px;
  text-align: center;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.toggle:checked ~ .flip-card__inner {
  transform: rotateY(180deg);
}
.toggle:checked ~ .flip-card__front {
  box-shadow: none;
}

.flip-card__front,
.flip-card__back {
  box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
  backface-visibility: hidden;
  background: #273444;
  padding: 20px;
  gap: 20px;
  border-radius: 5px;
  /* border: 1px solid #094a80; */
}

.flip-card__back {
  width: 100%;
  transform: rotateY(180deg);
}

.flip-card__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

.title {
  margin: 20px 0;
  font-size: 25px;
  font-weight: 900;
  color: var(--font-color);
  text-align: center;
}

.flip-card__input {
  height: 40px;
  width: 250px;
  border: none;
  border-radius: 5px;
  outline: none;
  background-color: var(--bg-color);
  font-size: 15px;
  font-weight: 600;
  padding: 5px 10px;
  color: #fff;
}

.flip-card__input::placeholder {
  color: var(--font-color-sub);
  opacity: 0.6;
}

.flip-card__btn:active {
  /* box-shadow: 0px 0px var(--main-color); */
  /* transform: rotate(180deg); */
}

.flip-card__btn {
  width: 150px;
  height: 40px;
  background-color: #5050FE;
  border: none;
  outline: none;
  border-radius: 25px;
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  /* box-shadow: 4px 4px var(--main-color); */
  margin: 20px 0;
}