@charset "utf-8";

/* =============================================
   STYLES THAT APPLY REGARDLESS OF SCREEN SIZE
   ============================================= */

body {
   font-family: Verdana, Geneva, sans-serif;
   color: rgb(91, 91, 91);
   background-color: ivory;
}

header {
   text-align: center;
   padding: 0;
}

header img {
   width: 100%;
}

h1, h2 {
   text-shadow: 4px 6px 5px gray;
}

h2 {
   font-size: 1.3em;
}

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

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

nav a {
   display: block;
   background-color: hsl(210, 25%, 35%);
   line-height: 2.8em;
   text-decoration: none;
   text-align: center;
   color: hsl(210, 30%, 92%);
}

nav a:hover {
   background-color: hsl(40, 70%, 50%);
   color: hsl(210, 25%, 15%);
}

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

body > footer {
   background-color: hsl(210, 25%, 35%);
   color: rgba(220, 220, 220, 0.6);
   font-weight: bold;
   font-size: 0.9em;
   line-height: 3em;
   text-align: center;
   margin-top: 10px;
   padding: 10px;
   clear: both;
}

ul {
   list-style-type: square;
}

/* Gallery styles (always apply) */
.gallery {
   display: flex;
   flex-wrap: wrap;
   gap: 10px;
   margin: 20px 0;
}

.gallery img {
   object-fit: cover;
   float: none;
   width: auto;
   padding: 0;
}

/* =============================================
   DESKTOP STYLES (min-width: 769px)
   ============================================= */

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

   html {
      background-image: url("https://www.toptal.com/designers/subtlepatterns/uploads/double-bubble-outline.png");
      background-repeat: repeat;
      background-position: center center;
      background-color: hsl(210, 20%, 70%);
   }

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

   main > img {
      width: 15%;
      padding: 15px;
      float: right;
   }

   .gallery img {
      width: calc(25% - 10px);
      height: 200px;
   }

}

/* =============================================
   MOBILE STYLES (max-width: 768px)
   ============================================= */

@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: calc(50% - 10px);
      height: 160px;
   }

}

/* 1-column gallery for very small screens */
@media only screen and (max-width: 480px) {

   .gallery img {
      width: 100%;
      height: 200px;
   }

}