@import url("https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;1,400;1,500&family=Epilogue:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500&display=swap");

/* ─── Design Tokens ─────────────────────────────────────── */
:root {
  --bg: #fafaf8;
  --bg-subtle: #f4f4f1;
  --surface: #ffffff;
  --border: #e8e8e3;
  --border-soft: rgba(0, 0, 0, 0.06);
  --text: #1a1a18;
  --text-dim: #6b6b66;
  --text-muted: #b0b0aa;
  --accent: #1a1a18; /* ink — no color accent, just weight */
  --accent-warm: #c85a2a; /* terracotta for single-use sparingly */
  --serif: "Lora", Georgia, serif;
  --sans: "Epilogue", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 3px;
  --max-w: 740px;
  --transition: 140ms ease;
}

/* ─── Reset & Base ──────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 3.5rem 2rem 6rem;
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  line-height: 1.82;
  font-size: 19px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body > * {
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
}

/* ─── Headings ──────────────────────────────────────────── */
h1,
h2,
h3,
h4 {
  font-family: var(--sans);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.025em;
  scroll-margin-top: 1.5rem;
  color: var(--text);
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  margin-top: 0;
  margin-bottom: 0.6rem;
}

h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 3.5rem;
  margin-bottom: 0.5rem;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2.2rem;
}

/* ─── Paragraphs ────────────────────────────────────────── */
p {
  margin: 1.3rem 0;
  color: #2c2c28;
}

/* First paragraph after h1 — slightly larger lead */
h1 + p,
header + article > p:first-child {
  font-size: 1.08rem;
  color: #3a3a36;
  line-height: 1.85;
}

/* ─── Article Meta ──────────────────────────────────────── */
.meta,
time,
.byline {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2.8rem;
}

/* ─── Links ─────────────────────────────────────────────── */
a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition:
    text-decoration-color var(--transition),
    color var(--transition);
}

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

/* ─── Lists ─────────────────────────────────────────────── */
ul,
ol {
  margin: 1.3rem 0;
  padding-left: 0;
  list-style: none;
}

ul li,
ol li {
  position: relative;
  padding-left: 1.4rem;
  margin: 0.5rem 0;
  color: #2c2c28;
}

ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-muted);
  font-family: var(--sans);
  font-weight: 400;
}

ol {
  counter-reset: ol-counter;
}

ol li {
  counter-increment: ol-counter;
}

ol li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  top: 0.3em;
}

/* ─── Horizontal Rule ───────────────────────────────────── */
hr {
  border: none;
  margin: 3.5rem auto;
  width: 3rem;
  height: 1px;
  background: var(--text);
  opacity: 0.2;
}

/* ─── Blockquote ────────────────────────────────────────── */
blockquote {
  margin: 2.5rem 0;
  padding: 0 0 0 1.6rem;
  border-left: 2px solid var(--text);
  position: relative;
}

blockquote p {
  margin: 0;
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.72;
  color: #3a3a36;
}

blockquote cite {
  display: block;
  margin-top: 0.8rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-style: normal;
}

/* ─── Tables ────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.88rem;
  font-family: var(--mono);
}

thead tr {
  border-bottom: 2px solid var(--text);
}

th {
  text-align: left;
  padding: 0.5rem 0.8rem 0.6rem 0;
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 500;
}

td {
  padding: 0.55rem 0.8rem 0.55rem 0;
  border-bottom: 1px solid var(--border);
  color: #2c2c28;
  vertical-align: top;
}

tr:last-child td {
  border-bottom: none;
}

/* ─── Inline Code ───────────────────────────────────────── */
code {
  font-family: var(--mono);
  font-size: 0.82rem;
  background: var(--bg-subtle);
  padding: 0.18rem 0.38rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--accent-warm);
  word-break: break-word;
}

/* ─── Code Blocks ───────────────────────────────────────── */
pre {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  padding: 1.3rem 1.5rem;
  overflow-x: auto;
  border-radius: var(--radius);
  margin: 2rem 0;
  position: relative;
}

pre::before {
  content: attr(data-lang);
  position: absolute;
  top: 0.6rem;
  right: 0.8rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: #2c2c28;
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ─── Images ────────────────────────────────────────────── */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2.5rem auto;
  border-radius: var(--radius);
}

figure {
  margin: 2.5rem 0;
}

figcaption {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.65rem;
  letter-spacing: 0.04em;
}

/* ─── Aside / Callout ───────────────────────────────────── */
aside,
.note,
.callout {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin: 2rem 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

aside strong,
.callout strong {
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text);
  display: block;
  margin-bottom: 0.35rem;
}

/* ─── Tags ───────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.22rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-dim);
  margin-right: 0.35rem;
  text-decoration: none;
  transition: all var(--transition);
}

.tag:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* ─── Navigation ─────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3.5rem;
}

nav .logo {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

nav ul {
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

nav ul li {
  padding: 0;
  margin: 0;
}

nav ul li::before {
  display: none;
}

nav a {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

nav a:hover {
  color: var(--text);
}

/* ─── Footer ─────────────────────────────────────────────── */
footer {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ─── Reading Progress ───────────────────────────────────── */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 1px;
  background: var(--text);
  z-index: 999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ─── Selection ──────────────────────────────────────────── */
::selection {
  background: #e8e8c8;
  color: var(--text);
}

/* ─── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ─── Abbr ───────────────────────────────────────────────── */
abbr[title] {
  border-bottom: 1px dotted var(--text-muted);
  cursor: help;
  text-decoration: none;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 700px) {
  body {
    padding: 2rem 1.3rem 4rem;
    font-size: 17px;
  }

  h1 {
    font-size: 1.85rem;
  }
  h2 {
    font-size: 1.2rem;
  }

  nav ul {
    gap: 1.2rem;
  }
  nav {
    flex-wrap: wrap;
    gap: 0.8rem;
  }
  footer {
    flex-direction: column;
    text-align: center;
  }
}

/* ─── Focus Accessibility ─────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
  border-radius: var(--radius);
}