/* CD/CI Definitions */
:root {
  --primary-bg: #F4F2D8;
  --primary-text: #3B3B3B;
  --accent-color: #309ACC;
  --black: #3B3B3B;
  --font-family: 'Tablet Gothic', Arial, sans-serif;
}

/* Basic reset */
body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--primary-bg);
  color: var(--primary-text);
}

/* Header */
header {
  background-color: var(--primary-bg);
  text-align: center;
  padding: 30px 0;
  padding-bottom: 60px;
}

.logo {
  max-width: 200px;
  height: auto;
}

/* Introduction */
#intro {
  text-align: center;
  margin: 20px;
}

h1 {
  margin: 0;
  font-family: "anisette-std", sans-serif;
  font-weight: 400;
  font-style: normal;
  border-top: solid 3px var(--black);
  padding-top: 40px;
}

/* Main */
#main {
  padding: 20px;
}

/* Toggle buttons */
.toggle-button {
  padding: 10px 20px;
  background-color: var(--accent-color);
  color: #FFFFFF;
  border: none;
  cursor: pointer;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 40px;
  padding-bottom: 0px;
}

/* Cards */
.card {
  padding: 25px;
  flex: 1 1 calc(33.333% - 40px); /* 3 cards per row, subtracting gap */
  box-sizing: border-box;
  height: 520px;
}

.card img:hover {
  cursor: pointer;
}

.card-inner {
  width: 100%;
  height: 250px;
  transform-style: preserve-3d;
  transition: transform 0.6s;
}

.card.flip .card-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

.card-back {
  transform: rotateY(180deg);
  background-color: var(--primary-bg);
}

.button-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 6%;
  margin-bottom: 6%;
}

.button-74 {
  background-color: var(--primary-bg);
  border: 2px solid var(--black);
  border-radius: 30px;
  box-shadow: var(--black) 4px 4px 0 0;
  color: var(--black);
  cursor: pointer;
  display: inline-block;
  font-weight: 600;
  font-size: 18px;
  padding: 0 18px;
  line-height: 50px;
  text-align: center;
  text-decoration: none;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.button-74:hover {
  background-color: var(--black);
  color: var(--primary-bg);
}

.button-74:active {
  box-shadow: #422800 2px 2px 0 0;
  transform: translate(2px, 2px);
}

.redewendungen {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 40px;
  padding-bottom: 0px;
}

.redewendung {
  padding: 25px;
  flex: 1 1 calc(33.333% - 40px);
  box-sizing: border-box;
  height: 520px;
}

.redewendung img:hover {
  cursor: pointer;
}

.redewendung-inner {
  width: 100%;
  height: 250px;
  transform-style: preserve-3d;
  transition: transform 0.6s;
}

.redewendung.flip .redewendung-inner {
  transform: rotateY(180deg);
}

.redewendung-front,
.redewendung-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

.redewendung-back {
  transform: rotateY(180deg);
  background-color: var(--primary-bg);
}

.footer-div {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: row;
  padding: 30px;
  background-color: var(--primary-bg);
  gap: 10px;
  color: #FFF7DF;
  border-top: solid 3px var(--black);
}

.footer-div p {
  color: var(--black);
  font-size: 1rem;
  font-weight: 300;
}

.footer-div img {
  vertical-align: middle;
}

.footer-div img:hover {
  opacity: 0.7;
}

/* Responsive Design */
/* @media (max-width: 768px) {
  .button-74 {
    min-width: 120px;
    padding: 0 25px;
  }

  .cards {
    justify-content: center;
  }

  .card, .redewendung {
    width: 45%;
  }

  .redewendungen {
    flex-direction: row;
  }
} */


/* Responsive Design */
/* @media (max-width: 768px) {

  .card, .redewendung {
    flex: 1 1 calc(50% - 40px);
  }
} */

@media (max-width: 768px) {
  .card, .redewendung {
    flex: 1 1 100%;
    height: 50vh;
  }
}

/* @media (max-width: 375px) {
  .card, .redewendung {
    flex: 1 1 100%;
    height: auto;
  }
} */