@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap");

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Roboto, sans-serif;
  background: #d9d9d9;
  color: #111;
}

/* ===== HEADER (mobile-first) ===== */
.site-header {
  background: #2f74d0;
  color: white;
  padding: 1rem;
  text-align: center;
}

.site-header h1 {
  margin: 0;
  font-size: 1.6rem;
}

/* Menu button shown on mobile/tablet */
.menu-btn {
  margin-top: 0.5rem;
  background: transparent;
  border: none;
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

/* Part 1 requirement: nav links hidden on mobile */
.site-nav a {
  display: none;
}

/* ===== MAIN ===== */
.content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
  text-align: center;
}

.content h2 {
  margin: 0.75rem 0 1rem;
  font-weight: 400;
}

/* ===== GALLERY ===== */
.gallery {
  display: grid;
  grid-template-columns: 1fr; /* Mobile: 1 column */
  gap: 1.25rem;
  justify-items: center;
}

.card {
  margin: 0;
  width: 220px;              /* keeps cards consistent like the screenshot */
  border: 1px solid #888;
  background: #efefef;
  padding: 0.6rem;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25);
}

/* Required: square images with correct aspect ratio */
.card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  border: 1px solid #bbb;
}

/* ===== FOOTER ===== */
.site-footer {
  background: #2f74d0;
  color: white;
  text-align: center;
  padding: 0.75rem;
  margin-top: 1rem;
}

/* ===== TABLET ===== */
@media screen and (min-width: 600px) {
  .gallery {
    grid-template-columns: repeat(2, 1fr); /* Tablet: 2 columns */
  }
}

/* ===== DESKTOP ===== */
@media screen and (min-width: 1000px) {
  /* Desktop: show nav links, hide menu button */
  .menu-btn {
    display: none;
  }

  .site-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 0.5rem;
  }

  .site-nav a {
    display: inline-block;
    color: white;
    text-decoration: none;
    font-size: 0.95rem;
  }

  .site-nav a:hover {
    text-decoration: underline;
  }

  .gallery {
    grid-template-columns: repeat(3, 1fr); /* Desktop: 3 columns */
  }
}