add search support

assets/base.scss

@@ -235,4 +235,120 @@ a[href^="/"] {
 
 .centered {
   margin-top: 30vh;
+}
+
+header {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+
+  & > nav {
+    @media all and (max-width: 600px) {
+      display: none;
+    }
+
+    & > a {
+      margin-left: 2em;
+    }
+  }
+
+  & > .spacer {
+    flex: 1 1 auto;
+  }
+
+  & > svg {
+    cursor: pointer;
+    width: 18px;
+    min-width: 18px;
+    margin: 0 1em;
+
+    &:hover .search-path {
+      stroke: var(--tertiary);
+    }
+
+    .search-path {
+      stroke: var(--gray);
+      stroke-width: 2px;
+      transition: stroke 0.5s ease;
+    }
+  }
+}
+
+#search-container {
+  position: fixed;
+  z-index: 9999;
+  left: 0;
+  top: 0;
+  width: 100vw;
+  height: 100vh;
+  display: none;
+  backdrop-filter: blur(4px);
+  -webkit-backdrop-filter: blur(4px);
+
+  & > div {
+    width: 50%;
+    margin-top: 15vh;
+    margin-left: auto;
+    margin-right: auto;
+
+    @media all and (max-width: 1200px) {
+      width: 90%;
+    }
+
+    & > * {
+      width: 100%;
+      border-radius: 4px;
+      background: var(--light);
+      box-shadow: 0 14px 50px rgba(27, 33, 48, 0.12), 0 10px 30px rgba(27, 33, 48, 0.16);
+      margin-bottom: 2em;
+    }
+
+    & > input {
+      box-sizing: border-box;
+      padding: 0.5em 1em;
+      font-family: Inter, sans-serif;
+      color: var(--dark);
+      font-size: 1.1em;
+      border: 1px solid var(--outlinegray);
+
+      &:focus {
+        outline: none;
+      }
+    }
+
+    & > #results-container {
+      & > .result-card {
+        padding: 1em;
+        cursor: pointer;
+        transition: background 0.2s ease;
+        border: 1px solid var(--outlinegray);
+        border-bottom: none;
+
+        &:hover {
+          background: rgba(180, 180, 180, 0.15);
+        }
+
+        &:first-of-type {
+          border-top-left-radius: 5px;
+          border-top-right-radius: 5px;
+        }
+
+        &:last-of-type {
+          border-bottom-left-radius: 5px;
+          border-bottom-right-radius: 5px;
+          border-bottom: 1px solid var(--outlinegray);
+        }
+
+        & > h3, & > p {
+          margin: 0;
+        }
+
+        & .search-highlight {
+          background-color: #afbfc966;
+          padding: 0.05em 0.2em;
+          border-radius: 3px;
+        }
+      }
+    }
+  }
 }