:root {
  --card-font-size-lg: 15px;
  --card-font-size-md: 10px;
  --card-font-weight-bold: 700;
  --card-font-weight-normal: 400;
  --card-letter-spacing: 2px;
  --card-text-transform: uppercase;
  --card-margin-top: 10px;
  --card-margin-left: 10px;
  --card-color: hsl(0, 0%, 100%);
  --card-padding: 20px;
  --card-radius: 5px;
  --card-bg: hsl(0, 27%, 41%);
  --card-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Space Grotesk', sans-serif;
  background-color: hsl(0, 0%, 98%);
  color: hsl(229, 57%, 11%);
  height: 100vh;
}

.containerr {
  background-image: url('./images/bg-main-mobile.png');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cards {
  /* background-image: url('./images/bg-main-mobile.png');  */
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 80%;
  max-width: 400px;
  margin-left: 30px;
  margin-top: 10px;
}

.card-back {
  overflow: hidden;
  margin: 0 auto;
  box-shadow: var(--card-shadow);
  width: 70%;
  width: 70vw;
  height: 42vw;
  max-width: 350px;
  max-height: 200px;
}

.card-front {
  border-radius: var(--card-radius);
  position: relative;
  overflow: hidden;
  margin: 0 auto;
  box-shadow: var(--card-shadow);
  width: 70vw;
  height: 42vw;
  max-width: 350px;
  max-height: 200px;
  bottom: 76px;
  left: -50px;
}

.card-front-bg,
.card-back-bg {
  width: 100%;
  height: auto;
  border-radius: var(--card-radius);
  position: relative;
  overflow: hidden;
  margin: 0 auto;
  box-shadow: var(--card-shadow);
}

.card-front-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 10px;
  padding: var(--card-padding);
}

.card-back-content {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  justify-content: flex-end;
  width: 100%;
  padding: var(--card-padding);
  color: var(--card-color);
}

.card-logo {
  grid-row: 1 / 2;
  justify-self: start;
  align-self: center;
}

.card-number {
  grid-row: 2 / 3;
  justify-self: center;
  align-self: center;
}

.card-name-cvc {
  grid-row: 3 / 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin: 0;
}

.card-text-sm {
  /* font-size: 4px; */
  color: var(--card-color);
  text-transform: var(--card-text-transform);
}

.card-text {
  color: var(--card-color);
  text-transform: var(--card-text-transform);
  letter-spacing: var(--card-letter-spacing);
  margin-top: var(--card-margin-top);
  margin-left: var(--card-margin-left);
}
.card-cvc {
  font-size: var(--card-font-size-md);
  font-weight: var(--card-font-weight-bold);
}

.card-number {
  font-size: var(--card-font-size-lg);
  font-weight: var(--card-font-weight-bold);
}
.card-name,
.card-expiry {
  font-size: var(--card-font-size-md);
  font-weight: var(--card-font-weight-normal);
}
.card-logo {
  width: 50px;
  height: 30px;
  margin-top: 10px;
}
.card-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Form */
form {
  background-color: hsl(0, 0%, 100%);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  padding: 100px 20px 20px;
  width: 100%;
  max-width: 500px;
  margin-top: -130px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

form .form-group:nth-child(1),
form .form-group:nth-child(2) {
  grid-column: 1 / span 2;
}
.btn {
  width: 100%;
  padding: 10px;
  background-color: hsl(240, 3%, 13%);
  color: hsl(0, 0%, 100%);
  border: none;
  border-radius: 5px;
  grid-column: 1 / span 2;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: var(--card-font-weight-bold);
  color: hsl(229, 57%, 11%);
  text-transform: var(--card-text-transform);
}
.form-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid hsl(227, 14%, 80%);
  border-radius: 5px;
  font-size: var(--card-font-size-md);
  font-weight: var(--card-font-weight-normal);
  color: hsl(229, 57%, 11%);
  background-color: hsl(0, 0%, 98%);
}
.form-group input:focus {
  outline: none;
  border-color: hsl(228, 45%, 44%);
}
.form-group input::placeholder {
  color: hsl(229, 57%, 11%);
  opacity: 0.5;
}

.attribution {
  font-size: 11px;
  text-align: center;
}
.attribution a {
  color: hsl(228, 45%, 44%);
}

/* Media Queries */
@media (min-width: 1024px) {
    .containerr {
        /* background-image: url('./images/bg-main-desktop.png'); */
        flex-direction: row;
        justify-content: center;
     
    }
    .cards {
        /* margin-left: 0; */
    }
    .card-front,
    .card-back {
        width: 400px;
        height: 250px;
    }
    form {
      padding: 50px;
      width: 100%;
      max-width: 500px;
      margin-top: -30px;
    }
}