1 files changed, 77 insertions, 0 deletions
diff --git a/sass/_header.scss b/sass/_header.scss
new file mode 100644
index 0000000..8512a55
--- /dev/null
+++ b/sass/_header.scss
@@ -0,0 +1,77 @@
+.site-header {
+  border-bottom: var(--rule);
+}
+
+.header-inner {
+  display: flex;
+  align-items: center;
+  gap: 1.5rem;
+  min-height: 3.8rem;
+}
+
+.site-title {
+  margin-right: auto;
+  color: var(--color-text);
+  font-weight: 700;
+  text-decoration: none;
+}
+
+.nav-list {
+  display: flex;
+  gap: 1.2rem;
+  list-style: none;
+}
+
+.nav-list a {
+  color: var(--color-muted);
+  font-size: 0.9rem;
+  text-decoration: none;
+}
+
+.nav-list a:hover,
+.nav-list a[aria-current="page"] {
+  color: var(--color-text);
+  text-decoration: underline;
+  text-underline-offset: 0.3em;
+}
+
+.theme-toggle {
+  display: none;
+  padding: 0.2rem 0;
+  border: 0;
+  border-bottom: 1px solid currentColor;
+  background: transparent;
+  color: var(--color-muted);
+  cursor: pointer;
+  font-size: 0.75rem;
+}
+
+.theme-ready .theme-toggle {
+  display: block;
+}
+
+@media (max-width: 42rem) {
+  .header-inner {
+    flex-wrap: wrap;
+    gap: 0.55rem 1rem;
+    padding-block: 0.8rem;
+  }
+
+  .site-title {
+    flex: 1 1 auto;
+  }
+
+  .header-inner nav {
+    order: 3;
+    width: 100%;
+  }
+
+  .nav-list {
+    flex-wrap: wrap;
+    gap: 0.4rem 1.25rem;
+  }
+
+  .theme-toggle {
+    margin-left: auto;
+  }
+}