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

:root {
  --mainColor: #ffb534;
  --textColor: #092635;
  --textWhite: #eef5ff;
  --bubbles: #4fc3dc;
  --bubbBack: #ff2d75;
}

body {
  min-height: 100vh;
  background-color: #0c192c;
}

.title-gallery {
  color: var(--mainColor);
}

.nav-background {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 50px;
}

.heading {
  background-color: #092635;
}

.art {
  color: var(--textWhite);
  padding-left: 50px;
}

.nav-item {
  padding-right: 120px;
}

.nav-item a {
  text-decoration: none;
  color: var(--textWhite);
  padding-left: 20px;
  font-size: 1.2em;
}

.nav-item span {
  cursor: pointer;
  transition: 0.3s all linear;
}

.nav-item :hover {
  color: var(--mainColor);
}

.flex-container {
  position: relative;
  width: 100%;
  height: auto;
  overflow: hidden;
  padding: 40px;
}

.bubbles {
  position: relative;
  display: flex;
}

.bubbles span {
  display: inline-block;
  position: relative;
  width: 30px;
  height: 30px;
  background: var(--bubbles);
  margin: 0 4px;
  border-radius: 50%;
  box-shadow: 0 0 0 10px #4fc3dc44, 0 0 20px var(--bubbles),
    0 0 40px var(--bubbles);
  animation: animate 15s linear infinite;
  animation-duration: calc(300s / var(--i));
}

.bubbles span:nth-child(1) {
  --i: 11;
}

.bubbles span:nth-child(2) {
  --i: 12;
}

.bubbles span:nth-child(3) {
  --i: 24;
}

.bubbles span:nth-child(4) {
  --i: 10;
}

.bubbles span:nth-child(5) {
  --i: 14;
}

.bubbles span:nth-child(6) {
  --i: 23;
}

.bubbles span:nth-child(7) {
  --i: 18;
}

.bubbles span:nth-child(8) {
  --i: 16;
}

.bubbles span:nth-child(9) {
  --i: 19;
}

.bubbles span:nth-child(10) {
  --i: 20;
}

.bubbles span:nth-child(11) {
  --i: 22;
}

.bubbles span:nth-child(12) {
  --i: 25;
}

.bubbles span:nth-child(13) {
  --i: 18;
}

.bubbles span:nth-child(14) {
  --i: 21;
}

.bubbles span:nth-child(15) {
  --i: 15;
}

.bubbles span:nth-child(16) {
  --i: 13;
}

.bubbles span:nth-child(17) {
  --i: 26;
}

.bubbles span:nth-child(18) {
  --i: 17;
}

.bubbles span:nth-child(19) {
  --i: 13;
}

.bubbles span:nth-child(20) {
  --i: 28;
}

.bubbles span:nth-child(even) {
  background: #ff2d75;
  box-shadow: 0 0 0 10px #ff2d7544, 0 0 20px #ff2d75, 0 0 40px #ff2d75;
}

@keyframes animate {
  0% {
    transform: translateY(100vh) scale(0);
  }

  100% {
    transform: translateY(-10vh) scale(1);
  }
}

.mid-card img {
  width: 100%;
  height: 340px;
  padding: 20px;
}

.text-card h3 {
  font-size: 2em;
  color: var(--bubbBack);
}

.button-detail {
  margin-top: 20px;
  margin-left: 20px;
}

.text-card a {
  color: var(--textWhite);
  text-decoration: none;
  border: 1px solid var(--mainColor);
  padding: 10px;
  font-size: 1.2rem;
  border-radius: 10px;
  transition: 0.5s ease-in;
}

.button-detail :hover {
  color: var(--mainColor);
  background-color: blueviolet;
  transform: scale(0.7);
}

.text-card footer {
  color: var(--mainColor);
}

.text-card {
  display: flex;
  justify-content: space-around;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  row-gap: 14px;
}

@media (max-width: 1245px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 840px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .flex-container {
    padding: 0;
  }

  .nav-item {
    display: none;
  }
}

.over-card {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s;
  width: 400px;
  height: 440px;
  border: 1px solid red;
  border-radius: 20px;
  background: var(--textColor);
}

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

.front,
.back {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  backface-visibility: hidden;
}

.front {
  z-index: 2;
}

.back {
  transform: rotateY(180deg);
  z-index: 1;
}

.details {
  padding: 20px;
  width: 300px;
  background-color: #f8f8f8;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  border-radius: 5px;
  position: absolute;
  top: 50%;
  left: 50%;
  height: 380px;
  overflow: scroll;
  box-sizing: content-box;
  transform: translate(-50%, -50%);
  text-align: left;
  display: none;
}

.details a {
  text-decoration: none;
  color: var(--bubbBack);
  font-size: 1.2em;
}

.over-card.flip .details {
  display: block;
}