:root {
  --max: 720px;
  --fg: #111;
  --muted: #666;
  --bg: #fff;
  --link: rgb(29 78 216);
  --link-hover: rgb(29 78 216);
  --link-underline: #c9c9c9;
  --underline-offset: 2px;
  --underline-thickness: 1px;
  --sidebar-left: 2%;
  --sidebar-top: 12px;
  --sidebar-width: 220px;
  --content-offset-pct: 20%;
  --content-gutter: 24px;
  --artwork-size: 150px;
  --nav-hover-bg: #f7f7f7;
  --nav-active-bg: #f1f1f1;
  --sidebar-pad: 8px;
}

* {
  box-sizing: border-box; 
}

html, body {
  margin: 12px;
  color: var(--fg);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: 12px;
  line-height: 1.5;
  font-weight: 100;
}

/* Flexible page layout without media queries */
body {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: .75rem;
}


/* Sidebar layout */
.sidebar {
  position: relative;
  width: var(--sidebar-width);
  margin-left: var(--sidebar-left);
  padding: var(--sidebar-pad);
  background: transparent;
  align-self: flex-start;
  flex: 0 0 var(--sidebar-width);
}

.sidebar-nav {
  margin-top: 20px;
  width: var(--artwork-size);
}

.vertical {
  flex-direction: column;
  gap: .5rem;
  align-items: flex-start;
}

/* Push main/footer to the right of the sidebar */
main {
  flex: 1 1 420px;
}

main > .container,
footer > .container {
  margin-left: 0;
  max-width: var(--max);
  padding-left: calc(var(--sidebar-left) + var(--sidebar-pad));
}

header {
  padding-top: 0.5rem;
}

ul.nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .75rem;
  align-items: flex-start;
}

/* Make vertical nav items span full sidebar width */
ul.nav.vertical {
  align-items: stretch;
  gap: .25rem;
}

ul.nav li {
  margin: 0;
}

.nav .ml-auto {
  margin-left: auto;
}

a {
  color: var(--link);
  text-decoration: none;
  text-underline-offset: var(--underline-offset);
  text-decoration-thickness: var(--underline-thickness);
  text-decoration-color: var(--link-underline);
}

a:hover {
  text-decoration: underline;
  color: var(--link-hover);
  text-decoration-color: var(--link-underline);
}

/* Sidebar nav link states */
.nav a:hover {
  color: var(--link-hover);
}

.nav a.active {
  
  text-decoration: none;
  background: var(--nav-active-bg);
  border-radius: 10px;
  padding: 0px 6px;
}

/* Sidebar nav appearance */
.sidebar-nav .nav a {
    font-weight: 600;
  display: block;
  width: 100%;
  padding: 0px 6px;
  border-radius: 6px;
  font-size: 1.2rem;
}
.sidebar-nav .nav li {
  width: 100%;
}

.sidebar-nav .nav a:hover {
  background: var(--nav-hover-bg);
}

/* Exclude meta (@akilian) from hover/active background styling */
.sidebar-nav .nav li.meta a:hover,
.sidebar-nav .nav li.meta a.active {
  background: transparent;
  color: var(--link);
}

.sidebar-nav .nav li.meta {
  margin-top: 1rem;
  font-size: 0.9rem;
}

/* Ensure the meta link anchor inherits the smaller size */
.sidebar-nav .nav li.meta a {
  font-size: 1rem;
  font-weight: 100;
}

main h1,
main h2,
main h3 {
  line-height: 1.2;
}

main h1 {
  font-size: 1.5rem;
  margin: 1rem 0 1rem;
}

main p {
  max-width: 68ch;
}

main img {
  max-width: 100%;
  height: auto;
}

footer {
  color: var(--muted);
  font-size: 9px;
  max-width: 400px;
}

/* Rotating artwork in the top-left */
.artwork {
  position: relative;
  top: 0;
  left: 0;
  width: var(--artwork-size);
  height: var(--artwork-size);
  z-index: 100;
  pointer-events: none;
}

.artwork .rotating {
  display: block;
  width: 100%;
  height: 100%;
  animation: spin 30s linear infinite;
  transform-origin: 50% 50%;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}