:root {
  --color-white: #FFFFFF;
  --color-basic-mid-grey: #5b5b5b;
  --color-gallery-blue: #476778;
  --color-gallery-dark-grey: #333333;
  --color-gallery-grey: #999999;
  --color-light-grey: #CCCCCC;
  --color-mid-grey: #676767;

  --padding-side: 20px;
  --border-radius: 4px;
}

* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.2em;
  background-color: var(--color-white);
  color: var(--color-gallery-dark-grey);
  margin: 0;
  padding: 0;
}

p {
  margin: 0;
}

a, a:visited {
  text-decoration: none;
}

a:hover, a:active, a:focus {
  color: var(--color-gallery-dark-grey);
  border-radius: 4px;
  padding: 2px 4px;
  transition: all 0.2s ease-in-out;
}

ul {
  list-style: none;
  padding-left: var(--padding-side);
  text-align: left;
  margin: 0;
}

li {
  text-align: left;
}

.navbar_nav-links::before {
  text-decoration: none;
  color: inherit;
  content: ">";
  margin-right: 5px;
  display: inline-block;
}

.full-centre {
  display: grid;
  place-items: center;
}

.site-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
  padding-top: 20px;
  padding-right: 15px;
  padding-bottom: 20px;
  padding-left: 15px;
  grid-template-columns: 350px;
  grid-template-areas:
    "header"
    "sidebar"
    "content"
    "footer";
}

.site-header {
  grid-area: header;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center; 
  padding: 10px;
  height: auto;
  flex-wrap: wrap;
  gap: 15px;
  background-color: var(--color-mid-grey);
  color: var(--color-gallery-dark-grey);
}

.site-header {
    align-items: center;
}
.article-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.site-header_contact * {
  color: var(--color-gallery-dark-grey);
  text-align: right;
}

.site-header_contact {
  background-color: var(--color-gallery-grey);
  line-height: 50px;
  padding-right: 10px;
}

.site-header_logo {
  display: flex;
  justify-content: center; 
  align-items: center; 
  background-color: var(--color-gallery-grey);
  width: 300px;
  height: 164px;
}

.site-header_logo-img {
  max-width: 100%;
  height: auto;
  display: block;
}

.site-sidebar {
  grid-area: sidebar;
  min-height: 150px;
  background-color: var(--color-mid-grey);
  padding: 1rem;
  color: var(--color-light-grey);
  text-align: left;
}

.site-sidebar_nav {
  padding-left: var(--padding-side);
}

.navbar_nav-links {
  margin-bottom: 15px;
}

.site-content {
  grid-area: content;
  min-height: 245px;
  background-color: var(--color-light-grey);
  color: var(--color-gallery-dark-grey);
  padding: 1rem;
}


.page-heading {
  font-weight: normal;
}

.content-heading {
  text-align: center;
}

.site-content_div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 0 var(--padding-side);
}

.site-content_article {
  padding: 1rem;
  border: 1px solid #ccc;
  border-radius: var(--border-radius);
  text-align: left;
  transition: background-color 0.3s ease;
  max-width:  288px;
  min-width: 225px;
}

.site-content_article:hover,
.site-content_article:focus-within {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px); 
}

.article-image_div {
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 205px;
  min-height: 205px;
  background-color: var(--color-white);
}

.article_image {
  width: 100%; 
  height: 100%;
  background-color: var(--color-white);
	box-shadow: 1px 2px 3px rgba(0, 0, 0, .5);
 border: 2px solid #777676;
}

.site-content_article h3 {
  font-size: 1em;
  margin-top: 0.5em;
}

.site-footer {
  grid-area: footer;
  min-height: 95px;
  background-color: var(--color-basic-mid-grey);
  color: var(--color-light-grey);
  padding: 1rem;
  text-align: center; 
}

@media (min-width: 600px) {
  .site-wrapper {
    grid-template-columns: 235px 1fr;
    grid-template-areas:
      "header  header"
      "sidebar content"
      "footer  footer";
  }

.site-header {
  grid-area: header;
  display: flex;
  flex-direction: row;
}

.content-heading {
    text-align: left;
}
  .site-content_div {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .site-content_div {
    grid-template-columns: repeat(3, 1fr);
  }
}