@charset "utf-8";

/* ===== UNIVERSAL STYLES ===== */

body {
  font-family: Verdana, Geneva, sans-serif;
  color: #c0d0e0;
  background-color: rgba(0, 0, 0, 0.7);
}

header img {
  width: 100%;
  height: auto;
  max-height: 250px;
  object-fit: cover;
  display: block;
}

h1, h2 {
  text-shadow: 4px 6px 5px gray;
  color: #c0d0e0;
  font-weight: bold;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

nav a {
  display: block;
  background-color: #336699;
  line-height: 2.8em;
  text-align: center;
  text-decoration: none;
  color: #ffcc00;
}

nav a:hover {
  background-color: #ffcc00;
  color: #ffffff;
}

main {
  padding: 20px;
  margin-top: 35px;
}

body > footer {
  background-color: #336699;
  color: rgba(255, 255, 255, 0.7);
  font-weight: bold;
  font-size: 0.9em;
  line-height: 3em;
  text-align: center;
  margin-top: 10px;
  padding: 10px;
  clear: both;
}

.gallery {
  display: flex;
  flex-wrap: wrap;
}

.gallery img {
  padding: 5px;
  box-sizing: border-box;
  max-width: 100%;
  height: auto;
}

.credits {
  font-size: 0.8em;
  font-style: italic;
  margin-top: 20px;
}

.family-table {
  width: 100%;
  border-collapse: collapse;
}

.family-table th,
.family-table td {
  border: 1px solid #336699;
  padding: 10px;
}

.family-table thead {
  background-color: #336699;
  color: #ffffff;
}

.family-table tbody tr:nth-child(odd) {
  background-color: rgba(51, 102, 153, 0.3);
}

.family-table tbody tr:nth-child(even) {
  background-color: rgba(51, 102, 153, 0.1);
}

.family-table tfoot {
  background-color: #336699;
  color: #ffffff;
  font-weight: bold;
  text-align: center;
}

/* ===== DESKTOP STYLES (769px and up) ===== */

@media only screen and (min-width: 769px) {

  html {
    background-image: url("background.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
  }

  body {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
  }

  nav li {
    display: block;
    width: 20%;
    float: left;
  }

  main > img {
    float: right;
    max-width: 50%;
    padding: 25px;
  }

  .gallery img {
    width: 25%;
  }

}

/* ===== MOBILE STYLES (768px and below) ===== */

@media only screen and (max-width: 768px) {

  body {
    width: 100%;
    margin: 0;
  }

  nav li {
    float: none;
    font-size: x-large;
    width: 100%;
  }

  nav a {
    border-bottom: 1px solid black;
  }

  main > img {
    width: 90%;
    float: none;
  }

  .gallery img {
    width: 50%;
  }

  .family-table, 
  .family-table tbody, 
  .family-table tr, 
  .family-table td, 
  .family-table th {
    display: block;
  }

  .family-table thead, 
  .family-table tfoot {
    display: none;
  }

  .family-table tbody td {
    position: relative;
    padding-left: 40%;
  }

  .family-table tbody td::before {
    content: attr(data-label);
    position: absolute;
    top: 10px;
    left: 10px;
    width: 35%;
    font-weight: bold;
  }

  .family-table tbody tr {
    margin-bottom: 15px;
    border: 1px solid #336699;
  }

}

/* ===== SMALL MOBILE STYLES (480px and below) ===== */

@media only screen and (max-width: 480px) {

  .gallery img {
    width: 100%;
  }

}