:root {
  --paper: #f6f4ef;
  --paper-soft: #efebe2;
  --ink: #11100e;
  --muted: #6d675f;
  --faint: rgba(17, 16, 14, .1);
  --line: rgba(17, 16, 14, .2);
  --strong: rgba(17, 16, 14, .48);
  --accent: #9f3f25;
  --green: #245a46;
  --mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: #d8d4ca;
  color: var(--ink);
  font-family: var(--sans);
}

a {
  color: inherit;
}

.site {
  width: 100%;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 248px 1fr;
  background:
    linear-gradient(90deg, transparent 0 247px, var(--line) 248px, transparent 249px),
    var(--paper);
}

.grain::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .42;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 0, 0, .035), transparent 1px),
    radial-gradient(circle at 76% 34%, rgba(0, 0, 0, .025), transparent 1px);
  background-size: 7px 7px, 11px 11px;
  mix-blend-mode: multiply;
}

.kicker {
  font: 12px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* --- sidebar --- */
.sidebar {
  position: relative;
  z-index: 2;
  padding: 40px 34px 42px;
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.sidebar .brand img {
  width: 30px;
  height: 30px;
  object-fit: contain;
  display: block;
}

.sidebar nav a {
  display: block;
  width: max-content;
  margin: 0 0 12px;
  text-decoration: none;
  font: 15px/1.2 var(--sans);
}

.sidebar nav a:hover {
  color: var(--accent);
}

.sidebar nav .active {
  border: 1px solid var(--ink);
  padding: 6px 9px;
  margin-left: -9px;
}

.sidebar nav .active:hover {
  color: var(--ink);
}

/* --- main --- */
.main {
  position: relative;
  z-index: 2;
  padding: 92px 54px 42px 74px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 44px;
}

.main > *,
.entry-row > * {
  min-width: 0;
}

.main h1,
.entry-row h2,
.prose {
  overflow-wrap: break-word;
}

.intro {
  display: block;
}

.main h1 {
  margin: 18px 0 0;
  font: 540 clamp(38px, 4.3vw, 58px)/1.02 var(--sans);
  letter-spacing: 0;
}

.intro .lead {
  margin: 22px 0 0;
  font: 18px/1.5 var(--serif);
  color: #37342f;
}

/* --- list of entries (notes / research) --- */
.entry-list {
  border-top: 1px solid var(--ink);
  align-self: start;
}

.entry-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 28px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.entry-row .id {
  font: 12px/1.3 var(--mono);
  color: var(--muted);
  text-transform: uppercase;
}

.entry-row h2 {
  margin: 0;
  max-width: 720px;
  font: 500 26px/1.12 var(--sans);
  letter-spacing: 0;
}

.entry-row h2 a {
  text-decoration: none;
}

.entry-row h2 a:hover {
  color: var(--accent);
}

.entry-row p {
  margin: 10px 0 0;
  max-width: 720px;
  font: 15px/1.5 var(--serif);
  color: #4d4942;
}

.entry-row .links {
  margin: 12px 0 0;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font: 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.entry-row .links a {
  color: var(--accent);
  text-decoration: none;
}

.entry-row .links a:hover {
  text-decoration: underline;
}

/* --- about prose --- */
.prose {
  align-self: start;
  justify-self: center;
  width: 100%;
  max-width: 680px;
  border-top: 1px solid var(--ink);
  padding-top: 26px;
}

.prose p {
  margin: 0 0 18px;
  font: 17px/1.6 var(--serif);
  color: #312e29;
}

.prose h2 {
  margin: 40px 0 12px;
  font: 600 27px/1.15 var(--sans);
  letter-spacing: 0;
}

.prose h3 {
  margin: 28px 0 10px;
  font: 600 19px/1.25 var(--sans);
}

.prose h4 {
  margin: 22px 0 8px;
  font: 600 16px/1.3 var(--sans);
}

.prose a {
  color: var(--accent);
  text-decoration: none;
}

.prose a:hover {
  text-decoration: underline;
}

.prose ul,
.prose ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.prose li {
  margin: 0 0 7px;
  font: 16px/1.55 var(--serif);
  color: #312e29;
}

.prose blockquote {
  margin: 0 0 20px;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--strong);
  font: italic 17px/1.55 var(--serif);
  color: #4d4942;
}

.prose pre {
  margin: 0 0 18px;
  padding: 16px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  max-width: 100%;
  overflow-x: auto;
  font: 13px/1.5 var(--mono);
  color: #2a2723;
}

.prose code {
  font-family: var(--mono);
  font-size: .92em;
}

.prose strong {
  font-weight: 600;
}

.prose .contact {
  margin-top: 30px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font: 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.prose .contact a {
  color: var(--accent);
  text-decoration: none;
}

.prose .contact a:hover {
  text-decoration: underline;
}

/* --- mobile bar (hidden on desktop) --- */
.mobile-bar {
  display: none;
}

@media (max-width: 880px) {
  .site {
    grid-template-columns: 1fr;
    background: var(--paper);
  }

  .sidebar {
    display: none;
  }

  .mobile-bar {
    position: sticky;
    top: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 22px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .mobile-bar .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font: 12px/1 var(--mono);
    letter-spacing: .08em;
    text-transform: uppercase;
    text-decoration: none;
  }

  .mobile-bar .brand img {
    width: 24px;
    height: 24px;
  }

  .mobile-bar nav {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: flex-end;
    font: 12px/1 var(--mono);
    letter-spacing: .04em;
    text-transform: uppercase;
  }

  .mobile-bar nav a {
    text-decoration: none;
  }

  .mobile-bar nav .active {
    color: var(--accent);
  }

  .main {
    padding: 30px 22px 34px;
    gap: 34px;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .entry-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}