@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap");
* {
  position: relative;
  box-sizing: border-box;
}

html {
  background: #000;
  color: #fff;
  font-family: "Montserrat", sans-serif;
  font-weight: 400;
}

h1,
h2,
h3,
h4,
strong {
  font-weight: 700;
}

body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  width: 100%;
  overflow: hidden;
}

.app {
  display: grid;
  padding: 5vmin;
}

.gallery {
  display: flex;
  gap: 1rem;
  margin: 1rem 0;
  align-items: center;
}

.image {
  flex: 1 1 100%;
  opacity: 0.7;
  transition: opacity 0.3s linear;
  cursor: pointer;
}
.image img {
  max-width: 100%;
  height: auto;
  --radius: 1rem;
  border-radius: var(--radius);
}
.image .title {
  display: block;
  font-size: 2vw;
  margin: 0.5rem 0;
  color: #aaa;
}
.image .title strong {
  display: block;
  color: white;
}
.image[data-selected] {
  opacity: 1;
  flex-grow: 1.15;
  flex-shrink: 0.85;
}

[data-flip] {
  transition: transform 0.3s cubic-bezier(0.2, 0, 0.5, 1), border-radius 0.3s cubic-bezier(0.2, 0, 0.5, 1);
  transform-origin: top left;
}

[data-flipping] {
  transition: none;
  transform: var(--flip-translate) var(--flip-scale);
  --flip-translate: translate(calc(-1px * var(--dx)), calc(-1px * var(--dy)));
  --flip-scale: scale(calc(1 / var(--dw)), calc(1 / var(--dh)));
  --flip-radius: calc((var(--dw)) * var(--radius)) /
      calc((var(--dh)) * var(--radius));
}

.title[data-flipping] {
  transform: var(--flip-translate);
}

img[data-flipping] {
  border-radius: var(--flip-radius);
}