:root {
  --yellow: #f9c54e;
  --blue: #12304a;
  --white: #ffffff;
  --nav-hover: #0b1d2d;
  --card-width: 21rem;
  --card-height: 27rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-width: none;
}

body {
  background-color: var(--yellow);
  color: var(--blue);
  font-family: Arial, Helvetica, sans-serif;
  -ms-overflow-style: none;
}

body::-webkit-scrollbar {
  display: none;
}

/* Navbar */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10;
  width: 100%;
  padding: 0.5rem 0;
  background-color: var(--blue);
}

.navbar ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.navbar a {
  display: block;
  padding: 1rem 0.9rem;
  color: var(--white);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
}

.navbar a:hover {
  background-color: var(--nav-hover);
}

/* Gallery */

.gallery {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  touch-action: pan-y;
}

.cards {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--card-width);
  height: var(--card-height);
  margin: 0;
  padding: 0;
  transform: translate(-50%, -50%);
}

.cards li {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  list-style: none;
  border-radius: 0.8rem;
  cursor: pointer;
  pointer-events: auto;
}

.cards li img {
  display: block;
  max-width: 90%;
  opacity: 0;
  user-select: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
}

/* Mobile */

@media (max-width: 800px) {
  .cards {
    width: 90vw;
    height: 70vh;
  }

  .actions {
    bottom: 1rem;
    gap: 0.5rem;
  }

  button {
    margin: 0.5rem;
    padding: 10px 16px;
    font-size: 0.9rem;
  }
}