/* ============================================================
   ECONOMIST THEME — Main Stylesheet
   ============================================================ */

:root {
  --font-body: 'Lora', Georgia, 'Times New Roman', serif;
  --font-ui: 'Source Sans 3', system-ui, sans-serif;
  --font-mono: 'Source Code Pro', 'Courier New', monospace;
  --color-text: #1a1a1a;
  --color-text-secondary: #555;
  --color-text-light: #888;
  --color-link: #1a4f8a;
  --color-link-hover: #0d2f54;
  --color-accent: #b5451b;
  --color-bg: #faf9f7;
  --color-bg-note: #f3f0ea;
  --color-border: #d8d3c8;
  --color-highlight-border: rgba(181, 69, 27, 0.35);
  --width-text: 680px;
  --width-full: 1140px;
  --sidenote-width: 260px;
  --sidenote-gap: 40px;
  --spacing-section: 3.5rem;
  --line-height: 1.75;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 18px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--width-full); margin: 0 auto; padding: 0 2rem; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-body);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
h1 { font-size: 2rem; font-weight: 500; letter-spacing: -0.02em; }
h2 { font-size: 1.45rem; font-weight: 500; }
h3 { font-size: 1.2rem; font-weight: 500; }
p { margin-bottom: 1.3rem; }

a {
  color: var(--color-link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
a:hover { color: var(--color-link-hover); border-bottom-color: var(--color-link-hover); }
strong { font-weight: 600; }
em { font-style: italic; }

blockquote {
  border-left: 3px solid var(--color-border);
  padding: 0.5rem 0 0.5rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-bg-note);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  border: 1px solid var(--color-border);
}
pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 1.25rem 1.5rem;
  border-radius: 4px;
  overflow-x: auto;
  margin: 1.5rem 0;
}
pre code { background: none; border: none; padding: 0; color: inherit; font-size: 0.82rem; }
hr { border: none; border-top: 1px solid var(--color-border); margin: 2.5rem 0; }
ul, ol { padding-left: 1.5rem; margin-bottom: 1.3rem; }
li { margin-bottom: 0.3rem; }

/* --- Header --- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.site-title { font-family: var(--font-body); font-size: 1.15rem; font-weight: 500; color: var(--color-text); border: none; letter-spacing: 0.01em; }
.site-title:hover { color: var(--color-link); border: none; }
.site-nav { display: flex; gap: 2rem; align-items: center; }
.nav-link { font-family: var(--font-ui); font-size: 0.9rem; font-weight: 400; color: var(--color-text-secondary); border: none; letter-spacing: 0.02em; text-transform: uppercase; transition: color 0.15s; }
.nav-link:hover, .nav-link.active { color: var(--color-text); border: none; }
.nav-link.active { color: var(--color-accent); }

/* --- Main & Footer --- */
.site-main { padding: 3rem 0 5rem; min-height: calc(100vh - 200px); }
.site-footer { border-top: 1px solid var(--color-border); padding: 1.5rem 0; }
.site-footer p { font-family: var(--font-ui); font-size: 0.85rem; color: var(--color-text-light); margin: 0; }

/* --- Home --- */
.home-layout { max-width: var(--width-text); }
.bio-section { margin-bottom: var(--spacing-section); padding-bottom: var(--spacing-section); border-bottom: 1px solid var(--color-border); }
.bio-section h1 { margin-top: 0; margin-bottom: 1rem; }
.recent-section .section-heading { font-family: var(--font-ui); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-light); margin-top: 0; margin-bottom: 1.75rem; }
.see-all { margin-top: 2rem; }
.see-all a { font-family: var(--font-ui); font-size: 0.9rem; }

/* --- Post previews --- */
.post-preview { margin-bottom: 2.5rem; padding-bottom: 2.5rem; border-bottom: 1px solid var(--color-border); }
.post-preview:last-of-type { border-bottom: none; }
.post-preview-title { margin-top: 0; margin-bottom: 0.3rem; font-size: 1.2rem; }
.post-preview-title a { color: var(--color-text); border: none; }
.post-preview-title a:hover { color: var(--color-link); }
.post-date { display: block; font-family: var(--font-ui); font-size: 0.82rem; color: var(--color-text-light); margin-bottom: 0.5rem; }
.post-summary { color: var(--color-text-secondary); font-size: 0.97rem; margin-bottom: 0; }

/* --- Single Post --- */
.post-single { max-width: var(--width-text); }
.post-single.has-sidenotes { max-width: calc(var(--width-text) + var(--sidenote-width) + var(--sidenote-gap) + 2rem); }
.post-header { margin-bottom: 2.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--color-border); }
.post-header .post-title { margin-top: 0; margin-bottom: 0.5rem; font-size: 2rem; font-weight: 500; }
.post-meta { display: flex; align-items: center; gap: 1rem; font-family: var(--font-ui); font-size: 0.85rem; color: var(--color-text-light); flex-wrap: wrap; }
.post-tags { display: flex; gap: 0.5rem; }
.tag { background: var(--color-bg-note); border: 1px solid var(--color-border); padding: 0.1em 0.55em; border-radius: 3px; font-size: 0.78rem; color: var(--color-text-secondary); }
.post-body { position: relative; counter-reset: sidenote-counter; }

/* --- List Page --- */
.list-header { margin-bottom: 2.5rem; padding-bottom: 0; border-bottom: none; }
.list-header .page-title { margin: 0; }
.page-intro { margin-top: 1rem; color: var(--color-text-secondary); max-width: var(--width-text); }

/* --- Publications --- */
.pub-group { margin-bottom: 2.5rem; }

.pub-group-heading {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-top: 0;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.pub-entry {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
}

.pub-main { flex: 1; }

.pub-title {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin: 0 0 0.15rem;
}

.pub-authors { font-family: var(--font-ui); font-size: 0.88rem; color: var(--color-text-secondary); margin: 0 0 0.15rem; }
.pub-details { font-family: var(--font-ui); font-size: 0.88rem; color: var(--color-text-light); margin: 0; }
.pub-links { display: flex; flex-direction: column; gap: 0.4rem; min-width: 50px; align-items: flex-end; }
.pub-link { font-family: var(--font-ui); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--color-accent); border: none; white-space: nowrap; }
.pub-link:hover { color: var(--color-link); border: none; }

/* ============================================================
   SIDENOTES
   ============================================================ */

.sidenote-wrapper { display: inline; }

.sidenote-toggle {
  display: inline;
  counter-increment: sidenote-counter;
  cursor: default;
}

.sidenote-number {
  display: inline-block;
  padding: 0 3px;
  border-radius: 3px;
  transition: background 0.15s;
}

.sidenote-number::after {
  content: counter(sidenote-counter);
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 600;
  vertical-align: super;
  line-height: 0;
  color: var(--color-accent);
  margin-left: 1px;
  display: inline-block;
  padding: 1px 3px;
  border-radius: 3px;
  background: transparent;
  transition: background 0.15s;
}

.sidenote-toggle-checkbox { display: none; }

.sn-anchor {
  transition: background 0.15s;
  cursor: default;
  border-radius: 2px;
  padding: 0 1px;
}

/* ---- Desktop ---- */
@media (min-width: 860px) {
  .post-single.has-sidenotes { position: relative; overflow: visible; }

  .sidenote {
    position: absolute;
    right: calc(-1 * (var(--sidenote-width) + var(--sidenote-gap)));
    width: var(--sidenote-width);
    font-family: var(--font-ui);
    font-size: 0.82rem;
    line-height: 1.55;
    color: var(--color-text-secondary);
    background: transparent;
    border-left: 2px solid var(--color-border);
    padding: 0.25rem 0.75rem;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    cursor: default;
  }

  .sidenote::before {
    content: counter(sidenote-counter) ".";
    font-weight: 600;
    color: var(--color-accent);
    margin-right: 0.35em;
    font-size: 0.78rem;
  }

  .sidenote:hover,
  .sidenote.highlighted {
    background: rgba(200, 50, 20, 0.06);
    border-left-color: var(--color-accent);
    color: var(--color-text);
  }

  .sidenote-number.highlighted::after {
    background: rgba(200, 50, 20, 0.25);
  }

  .sidenote-toggle { cursor: default; }
}

/* ---- Mobile ---- */
@media (max-width: 859px) {
  .sidenote {
    display: none;
    margin: 0.75rem 0 1rem;
    padding: 0.6rem 0.9rem;
    background: var(--color-bg-note);
    border-left: 3px solid var(--color-border);
    font-family: var(--font-ui);
    font-size: 0.84rem;
    line-height: 1.55;
    color: var(--color-text-secondary);
    border-radius: 0 3px 3px 0;
  }
  .sidenote::before { content: counter(sidenote-counter) ". "; font-weight: 600; color: var(--color-accent); }
  .sidenote-toggle-checkbox:checked ~ .sidenote { display: block; }
  .sidenote-toggle { cursor: pointer; }
  .sidenote-number::after { text-decoration: underline; text-decoration-style: dotted; }
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .site-header-inner { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .site-nav { gap: 1.25rem; }
  html { font-size: 17px; }
  .post-header .post-title { font-size: 1.6rem; }
  .pub-entry { flex-direction: column; }
  .pub-links { flex-direction: row; align-items: flex-start; }
}

@media (max-width: 400px) {
  .container { padding: 0 1.25rem; }
}

/* --- Contact section --- */
.contact-section {
  margin-top: var(--spacing-section);
  padding-top: var(--spacing-section);
  border-top: 1px solid var(--color-border);
}
.contact-heading {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-top: 0;
  margin-bottom: 1.25rem;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.contact-item a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-secondary);
  border: none;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  transition: color 0.15s;
}
.contact-item a:hover {
  color: var(--color-link);
  border: none;
}
.contact-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
  stroke: currentColor;
}

/* --- Contact & Recent sections spacing fix --- */
.contact-section {
  margin-top: 2.5rem;
  padding-top: 0;
  border-top: none;
}
.contact-heading {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-top: 0;
  margin-bottom: 1.25rem;
}
.recent-section {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
}
.recent-section .section-heading {
  margin-top: 0;
}