/* Base */
body {
  margin: 0;
  font-family: Arial, sans-serif;
}

/* Header */
.site-header {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.title {
  margin: 0;
}

/* Menu button */
.menu-btn {
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-btn span {
  display: block;
  width: 30px;
  height: 4px;
  margin: 6px 0;
  background: black;
  transition: 0.4s;
}

/* Hamburger -> X animation */
.change .bar1 { transform: translate(0, 10px) rotate(-45deg); }
.change .bar2 { opacity: 0; }
.change .bar3 { transform: translate(0, -10px) rotate(45deg); }

/* Nav (mobile first) */
nav {
  width: 100%;
  display: flex;
  flex-direction: column;
  text-align: center;
  margin-top: 1rem;
}

nav a {
  padding: 1rem;
  text-decoration: none;
  color: black;
}

nav a:hover {
  color: #555;
}

.hide {
  display: none;
}

/* Gallery */
main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1rem 2rem;
}

.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

figure {
  margin: 0;
}

.gallery img {
  width: 250px;
  height: 250px;
  object-fit: cover;
  display: block;
  margin: 0 auto;
  padding: 5px;
  background: white;
  box-shadow: 5px 5px 15px rgba(0,0,0,0.7);
  cursor: pointer;
}

/* Modal */
dialog {
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
  margin: 0;
  background: rgba(0,0,0,0.75);
  position: fixed;
  inset: 0;
}

dialog::backdrop {
  background: rgba(0,0,0,0.75);
}

.viewer img {
  width: 90%;
  display: block;
  margin: 20vh auto;
  background: white;
}

.close-viewer {
  position: absolute;
  top: 10vh;
  right: 2vh;
  font-size: 1.5em;
  padding: 3px 8px;
  border: none;
  cursor: pointer;
}

/* Footer */
.site-footer {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
  text-align: center;
}

/* Desktop */
@media (min-width: 700px) {
  .menu-btn {
    display: none;
  }

  nav {
    display: flex !important;
    width: auto;
    flex-direction: row;
    margin-top: 0;
  }

  nav a {
    padding: 0.5rem 1rem;
  }

  .gallery {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1000px) {
  .gallery {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .viewer img {
    width: 60%;
    margin: 15vh auto;
    max-width: 800px;
  }

  .close-viewer {
    right: 15vh;
  }
}

.content {
    text-align: center;
}