body {
  font-family: "Poppins", sans-serif;
  background-color: #f4f7f6;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #333333; }
  body header {
    text-align: center;
    margin: 2rem 0; }
    body header h1 {
      margin-bottom: 0.5rem; }

.cards-container {
  display: flex;
  gap: 3rem;
  padding: 2rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap; }

.flip-card {
  background-color: transparent;
  width: 300px;
  height: 450px;
  perspective: 1000px; }
  .flip-card .flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d; }
    .flip-card .flip-card-inner:hover {
      transform: rotateY(180deg); }
  .flip-card .flip-card-front, .flip-card .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2); }
  .flip-card .flip-card-back {
    transform: rotateY(180deg); }

img {
  width: 100%;
  height: 100%;
  object-fit: cover; }

.text-card .flip-card-front {
  background-color: #4a90e2;
  color: #ffffff; }
.text-card .flip-card-back {
  background-color: #f39c12;
  color: #ffffff; }
.text-card .card-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  box-sizing: border-box; }

.mixed-card .flip-card-back {
  background-color: #2c3e50;
  color: #ffffff; }
.mixed-card .card-content-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: #ffffff; }
  .mixed-card .card-content-overlay h2 {
    margin: 0; }
.mixed-card .card-content {
  padding: 2rem;
  height: 100%;
  box-sizing: border-box; }