/* ==========================================================================
   Kafka reading notes — shared stylesheet
   Design system: EB Garamond (headings) + Spectral (body) + IBM Plex Mono
   Palette: old paper + deep ink + single muted rust accent
   ========================================================================== */

:root {
  /* Light — old paper */
  --bg: #efece4;
  --bg-raised: #f4f1ea;
  --ink: #1f1b17;
  --ink-soft: #3a342e;
  --muted: #6e6962;
  --muted-2: #8a867c;
  --rule: #d8d2c4;
  --rule-strong: #6e6962;
  --accent: #5c2a1a;         /* muted rust */
  --accent-hover: #7a3621;

  --serif-display: "EB Garamond", "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --serif-body: "Spectral", "EB Garamond", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --measure: clamp(18rem, 66ch, 40rem);
  --measure-wide: clamp(20rem, 78ch, 46rem);

  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --bg-raised: #1a1813;
    --ink: #e8e3d8;
    --ink-soft: #cfc9bb;
    --muted: #8a867c;
    --muted-2: #6e6962;
    --rule: #2a2822;
    --rule-strong: #6e6962;
    --accent: #c58f61;
    --accent-hover: #d9a275;
  }
}

/* Reset ------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif-body);
  font-size: 18px;
  line-height: 1.75;
  font-feature-settings: "liga" 1, "kern" 1, "onum" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  text-spacing-trim: auto;
}

img, svg { max-width: 100%; display: block; }
p, ul, ol, blockquote, pre { margin: 0; }

/* Links ------------------------------------------------------------------- */
a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-thickness 120ms var(--ease), color 120ms var(--ease);
}
a:hover {
  text-decoration-thickness: 2px;
  color: var(--accent);
}
a:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

/* Headings ---------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--serif-display);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 0;
}

h2 { font-size: 1.5rem; margin-top: 2.75rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.15rem; margin-top: 2rem; margin-bottom: 0.5rem; font-style: italic; font-weight: 400; }

/* Layout ------------------------------------------------------------------ */
.site {
  max-width: 68rem;
  margin: 0 auto;
  padding: clamp(1.25rem, 3vw, 2.25rem) clamp(1.25rem, 4vw, 3rem) 4rem;
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

/* Masthead — asymmetric ---------------------------------------------------- */
.masthead {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  column-gap: 2rem;
  padding-block: 0.25rem 3.5rem;
}
.masthead__brand {
  font-family: var(--serif-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.masthead__brand a {
  text-decoration: none;
  color: var(--ink);
}
.masthead__brand a:hover { color: var(--accent); text-decoration: none; }
.masthead__sub {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.35rem;
  font-weight: 400;
}
.masthead__nav {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.5rem;
}
.masthead__nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.5rem;
}
.masthead__nav a:first-child { margin-left: 0; }
.masthead__nav a:hover { color: var(--accent); }
.masthead__nav a[aria-current="page"] { color: var(--ink); }

/* Page corner mark -------------------------------------------------------- */
.cornermark {
  position: fixed;
  bottom: 1.25rem;
  right: 1.5rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-2);
  pointer-events: none;
  z-index: 1;
}
@media (max-width: 900px) {
  .cornermark { display: none; }
}

/* Footer ------------------------------------------------------------------ */
.colophon {
  margin-top: 6rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.colophon p { max-width: 38rem; }
.colophon em { font-style: italic; color: var(--muted-2); }

/* ==========================================================================
   Home — article index
   ========================================================================== */

.index {
  max-width: var(--measure-wide);
  margin-inline: 0;
  padding-top: 2rem;
}

.index__intro {
  font-family: var(--serif-display);
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  line-height: 1.35;
  color: var(--ink-soft);
  max-width: 32rem;
  font-style: italic;
  font-weight: 400;
  margin-bottom: 5rem;
  text-wrap: pretty;
}

.index__heading {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.index__heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.entry-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.entry {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.5rem;
  padding-block: 2.5rem;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.entry:first-child { padding-top: 0.5rem; }
.entry:last-child { border-bottom: 0; }

.entry__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted-2);
  letter-spacing: 0.06em;
  padding-top: 0.6rem;
}

.entry__title {
  font-family: var(--serif-display);
  font-size: clamp(1.35rem, 2.3vw, 1.65rem);
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: -0.005em;
  margin: 0 0 0.35rem;
}
.entry__title a {
  text-decoration: none;
  color: var(--ink);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-size: 0% 1px;
  background-position: 0 100%;
  transition: background-size 180ms var(--ease), color 120ms var(--ease);
  padding-bottom: 2px;
}
.entry__title a:hover {
  color: var(--accent);
  background-size: 100% 1px;
}

.entry__meta {
  display: flex;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 0.75rem;
  align-items: center;
}
.entry__meta time { color: var(--muted); }
.entry__meta .dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--muted-2);
  display: inline-block;
}

.entry__dek {
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 38rem;
  text-wrap: pretty;
}

@media (max-width: 600px) {
  .entry { grid-template-columns: 2.25rem 1fr; gap: 1rem; }
}

/* ==========================================================================
   Article — frontispiece + body
   ========================================================================== */

.article {
  max-width: var(--measure);
  margin: 0 auto;
}

.frontispiece {
  padding-block: 3rem 3.5rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 3rem;
}
.frontispiece__num {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}
.frontispiece__title {
  font-family: var(--serif-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 2.25rem;
  text-wrap: balance;
}
.frontispiece__rule {
  width: 48px;
  height: 3px;
  background: var(--ink);
  border: 0;
  margin: 0 0 1rem;
}
.frontispiece__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Article body ------------------------------------------------------------ */
.prose p + p { margin-top: 1.1rem; }
.prose p {
  text-wrap: pretty;
  hanging-punctuation: first last;
}

/* Drop cap — only on the first paragraph after frontispiece on the marked piece */
.prose--dropcap > p:first-of-type::first-letter {
  font-family: var(--serif-display);
  font-weight: 500;
  float: left;
  font-size: 4.2rem;
  line-height: 0.88;
  padding: 0.35rem 0.65rem 0 0;
  color: var(--ink);
  font-feature-settings: "liga" 1, "kern" 1;
}

/* Blockquote — thin vertical rule + italic */
.prose blockquote {
  margin: 2rem 0 2rem 0.25rem;
  padding-left: 1.4rem;
  border-left: 1px solid var(--accent);
  color: var(--ink-soft);
  font-style: italic;
  font-size: 0.98rem;
  line-height: 1.7;
}
.prose blockquote p + p { margin-top: 0.9rem; }
.prose blockquote cite {
  display: block;
  margin-top: 0.5rem;
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-transform: uppercase;
}
.prose blockquote cite::before { content: "— "; }

/* Inline emphasis */
.prose em, .prose i { font-style: italic; }
.prose strong { font-weight: 600; color: var(--ink); }

/* Pre / code */
.prose pre, .prose code {
  font-family: var(--mono);
  font-size: 0.88rem;
}
.prose pre {
  background: var(--bg-raised);
  padding: 1rem 1.15rem;
  border-left: 2px solid var(--rule-strong);
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 1.5rem 0;
}

/* Section rule */
.prose hr.section-break {
  border: 0;
  height: 0;
  text-align: center;
  margin: 2.75rem 0;
  color: var(--muted-2);
  font-family: var(--serif-display);
}
.prose hr.section-break::before {
  content: "⁂";
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  color: var(--muted-2);
}

/* Article nav — prev / next ---------------------------------------------- */
.article-nav {
  margin-top: 5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}
.article-nav a {
  text-decoration: none;
  color: var(--muted);
  display: block;
  line-height: 1.5;
}
.article-nav a:hover { color: var(--accent); }
.article-nav__label {
  display: block;
  text-transform: uppercase;
  color: var(--muted-2);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  margin-bottom: 0.5rem;
}
.article-nav__title {
  font-family: var(--serif-display);
  font-size: 1rem;
  color: var(--ink-soft);
  letter-spacing: normal;
  text-transform: none;
  font-style: italic;
}
.article-nav .next { text-align: right; }

/* ==========================================================================
   About
   ========================================================================== */

.about {
  max-width: var(--measure);
  margin: 0 auto;
  padding-top: 2rem;
}
.about h1 {
  font-family: var(--serif-display);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 1.25rem;
}
.about__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.about__rule {
  border: 0;
  height: 3px;
  width: 48px;
  background: var(--ink);
  margin: 0 0 2.5rem;
}
.about dl {
  margin: 2.5rem 0 0;
  display: grid;
  grid-template-columns: 8rem 1fr;
  row-gap: 0.75rem;
  column-gap: 1.5rem;
  font-size: 0.95rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}
.about dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 0.25rem;
}
.about dd { margin: 0; color: var(--ink-soft); }
.about dd a { word-break: break-all; }

@media (max-width: 560px) {
  .about dl { grid-template-columns: 1fr; row-gap: 0.15rem; }
  .about dt { margin-top: 0.75rem; }
}

/* Reduced motion --------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}