/* ============================================================
   Pupilla — Article Layout Styles
   Extracted from pupilla-article-mockup.html
   ============================================================ */

:root {
  --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --sans: 'Libre Franklin', -apple-system, Helvetica Neue, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --text: #1a1a1a;
  --text-secondary: #555;
  --text-muted: #888;
  --bg: #fff;
  --bg-warm: #faf8f5;
  --accent: #2a60a8;
  --accent-light: rgba(42, 96, 168, 0.08);
  --accent-lighter: rgba(42, 96, 168, 0.04);
  --border: #e8e4df;
  --border-light: #f0ece7;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --reading-width: 680px;
  --wide-width: 900px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 18px; scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ============ TOP BAR ============ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow 0.3s ease;
}
.topbar.scrolled { box-shadow: var(--shadow-sm); }

.topbar-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0.6rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-logo {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.topbar-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}
.topbar-logo .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.topbar-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.topbar-nav a:hover { color: var(--accent); }

/* ============ PROGRESS BAR ============ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--accent);
  z-index: 200;
  transition: width 0.1s linear;
}

/* ============ ARTICLE HEADER ============ */
.article-header {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 4rem 2rem 2.5rem;
}

.article-meta-top {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
}

.article-title {
  font-family: var(--serif);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.6rem;
  max-width: 800px;
}

.article-subtitle {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 300;
  line-height: 1.4;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 700px;
}

.author-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.author-avatars {
  display: flex;
  gap: -0.3rem;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.72rem;
  color: #fff;
  background: var(--accent);
}
.author-avatar + .author-avatar {
  margin-left: -8px;
  background: #5a7a6b;
}

.author-info {
  font-family: var(--sans);
  font-size: 0.82rem;
}
.author-names {
  font-weight: 600;
  color: var(--text);
}
.author-names a {
  color: var(--text);
  text-decoration: none;
}
.author-names a:hover { color: var(--accent); }
.author-date {
  color: var(--text-muted);
  font-size: 0.76rem;
}

/* ============ ARTICLE ACTIONS ============ */
.article-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 0;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.3rem 0.5rem;
  border-radius: 4px;
  transition: all 0.2s;
}
.action-btn:hover {
  color: var(--accent);
  background: var(--accent-light);
}
.action-btn svg { width: 18px; height: 18px; }

.action-spacer { flex: 1; }

.pdf-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid rgba(42, 96, 168, 0.15);
  padding: 0.35rem 0.8rem;
  border-radius: 20px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}
.pdf-btn:hover {
  background: rgba(42, 96, 168, 0.14);
  border-color: rgba(42, 96, 168, 0.3);
}
.pdf-btn svg { width: 14px; height: 14px; }

/* ============ EPIGRAPHS ============ */
.epigraph-section {
  max-width: var(--reading-width);
  margin: 2.5rem auto 3rem;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.epigraph-section.single-epigraph {
  grid-template-columns: 1fr;
}

.epigraph {
  padding: 1.2rem 0;
  border-top: 2px solid var(--border);
}

.epigraph p {
  font-style: italic;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.epigraph cite {
  font-family: var(--sans);
  font-style: normal;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ============ ABSTRACTS (for abstract-only view within article layout) ============ */
.article-abstracts {
  max-width: var(--reading-width);
  margin: 0 auto 2rem;
  padding: 0 2rem;
}

.article-abstract-block {
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.article-abstract-block h3 {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}

.article-abstract-block p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ============ MAIN ARTICLE BODY ============ */
.article-body {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.article-body p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.article-body p.lede {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--text);
}

/* Section headings */
.article-body h2 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 3rem 0 1.2rem;
  line-height: 1.3;
}

.article-body h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  font-style: italic;
  color: var(--text);
  margin: 2.2rem 0 1rem;
  line-height: 1.4;
}

/* Blockquotes */
.article-body blockquote {
  margin: 1.8rem 0 1.8rem 0;
  padding: 0 0 0 1.5rem;
  border-left: 3px solid var(--accent);
  position: relative;
}

.article-body blockquote p {
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--text-secondary);
  font-style: italic;
}

/* Emphasis and links */
.article-body em { font-style: italic; }
.article-body strong { font-weight: 600; }

.article-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(42, 96, 168, 0.25);
  transition: border-color 0.2s;
}
.article-body a:hover { border-bottom-color: var(--accent); }

/* Footnote references — styled via tooltip section below */

/* Footnotes list (kramdown generates this) */
.article-body .footnotes {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.article-body .footnotes ol {
  padding-left: 1.5rem;
}

.article-body .footnotes li {
  margin-bottom: 0.5rem;
}

.article-body .footnotes p {
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 0.3rem;
}

/* Lists */
.article-body ul, .article-body ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* Images */
.article-body .article-image {
  display: block;
  max-width: 100%;
  margin: 2rem auto;
  border-radius: 6px;
  box-shadow: var(--shadow-md);
}

.article-body .image-caption {
  text-align: center;
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: -1rem;
  margin-bottom: 2rem;
}

.article-body .image-caption em {
  font-style: normal;
}

/* ============ SEPARATOR / SECTION BREAK ============ */
.section-break {
  text-align: center;
  margin: 2.5rem 0;
  color: var(--text-muted);
  font-size: 1.2rem;
  letter-spacing: 0.5em;
}

/* ============ HIGHLIGHT SELECTION ============ */
::selection {
  background: rgba(42, 96, 168, 0.15);
  color: var(--text);
}

/* ============ TAGS / KEYWORDS ============ */
.article-tags {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 0 2rem 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-warm);
  border: 1px solid var(--border);
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  text-decoration: none;
  transition: all 0.2s;
}
.tag:hover {
  background: var(--accent-light);
  border-color: rgba(42, 96, 168, 0.2);
  color: var(--accent);
}

/* ============ AUTHOR BIO FOOTER ============ */
.author-bio-section {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
  border-top: 1px solid var(--border-light);
}

.author-bio {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.author-bio .bio-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.8rem;
  color: #fff;
  background: var(--accent);
}

.author-bio:nth-child(even) .bio-avatar {
  background: #5a7a6b;
}

.author-bio .bio-text h4 {
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.author-bio .bio-text p {
  font-family: var(--sans);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ============ CITATION BOX ============ */
.citation-box {
  max-width: var(--reading-width);
  margin: 0 auto 3rem;
  padding: 0 2rem;
}
.citation-box-inner {
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 1.5rem;
}
.citation-box-inner h4 {
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}
.citation-box-inner p {
  font-family: var(--sans);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.citation-copy {
  margin-top: 0.6rem;
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.citation-copy:hover { text-decoration: underline; }

/* ============ TABLE OF CONTENTS (floating) ============ */
.toc-float {
  position: fixed;
  left: max(calc((100vw - var(--wide-width)) / 2 - 220px), 16px);
  top: 120px;
  width: 200px;
  font-family: var(--sans);
  font-size: 0.68rem;
  z-index: 50;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.4s, transform 0.4s;
}
.toc-float.visible {
  opacity: 1;
  transform: translateX(0);
}

.toc-float h5 {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.toc-float a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.25rem 0 0.25rem 0.7rem;
  border-left: 2px solid var(--border-light);
  line-height: 1.4;
  transition: all 0.2s;
}
.toc-float a:hover { color: var(--accent); }
.toc-float a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ============ AUTHOR COPYRIGHT ============ */
.author-copyright {
  max-width: var(--reading-width);
  margin: 0 auto 2rem;
  padding: 1rem 2rem;
  border-top: 1px solid var(--border);
}
.author-copyright p {
  font-family: var(--sans);
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============ FOOTER ============ */
.article-site-footer {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  font-family: var(--sans);
  font-size: 0.72rem;
  color: var(--text-muted);
}
.article-site-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}
.article-site-footer a:hover { color: var(--accent); }

/* ============ LANGUAGE TOGGLE ============ */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  font-family: var(--sans);
  font-size: 0.72rem;
  margin-left: 0.5rem;
}
.lang-toggle a {
  padding: 0.25rem 0.6rem;
  text-decoration: none;
  color: var(--text-muted);
  transition: all 0.2s;
  border: none;
}
.lang-toggle a.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.lang-toggle a:not(.active):hover {
  background: var(--accent-light);
  color: var(--accent);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1200px) {
  .toc-float { display: none; }
}

@media (max-width: 768px) {
  html { font-size: 16px; }
  .article-title { font-size: 2rem; }
  .article-subtitle { font-size: 1.15rem; }
  .article-header { padding: 2.5rem 1.5rem 1.5rem; }
  .article-body { padding: 0 1.5rem 3rem; }
  .epigraph-section {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 0 1.5rem;
  }
  .article-abstracts { padding: 0 1.5rem; }
  .article-tags { padding: 0 1.5rem 2rem; }
  .author-bio-section { padding: 2rem 1.5rem 3rem; }
  .citation-box { padding: 0 1.5rem; }
  .topbar-nav { gap: 1rem; font-size: 0.7rem; }
}

@media (max-width: 480px) {
  .topbar-nav { display: none; }
  .author-row { flex-direction: column; align-items: flex-start; }
  .article-actions { flex-wrap: wrap; }
}

/* ============ FOOTNOTE TOOLTIPS ============ */
.article-body sup {
  position: relative;
  font-family: var(--sans);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--accent);
  vertical-align: super;
  line-height: 0;
}
.article-body sup a {
  color: var(--accent);
  border-bottom: none;
}
.footnote-tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: #eee;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.5;
  padding: 0.7rem 0.9rem;
  border-radius: 6px;
  width: 320px;
  max-width: 90vw;
  z-index: 50;
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  pointer-events: none;
}
.footnote-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--text);
}
.article-body sup {
  position: relative;
}
.article-body sup:hover .footnote-tooltip {
  display: block;
}

/* ============ CLAP / APPRECIATION ============ */
.clap-section {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
  border-top: 1px solid var(--border-light);
}
.clap-big {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  padding: 1rem;
  transition: transform 0.15s;
  background: none;
  border: none;
}
.clap-big:hover { transform: scale(1.05); }
.clap-big:active { transform: scale(0.95); }
.clap-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all 0.25s;
  background: var(--bg);
}
.clap-big:hover .clap-circle {
  border-color: var(--accent);
  background: var(--accent-light);
}
.clap-big.active .clap-circle {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  animation: clapPop 0.3s ease;
}
@keyframes clapPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}
.clap-count {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.action-btn.clapped { color: var(--accent); }
.action-btn.clapped svg { fill: var(--accent); }



/* ============ AUTO LEDE (first paragraph) ============ */
.article-body > p:first-child,
.article-body > .lang-content > p:first-child {
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ============ HR AS SECTION BREAK ============ */
.article-body hr {
  border: none;
  text-align: center;
  margin: 2.5rem 0;
  color: var(--text-muted);
  font-size: 1.2rem;
  letter-spacing: 0.5em;
}
.article-body hr::after {
  content: '· · ·';
}

/* ============ ENTRANCE ANIMATIONS ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.article-header { animation: fadeUp 0.6s ease both; }
.epigraph-section { animation: fadeUp 0.6s 0.1s ease both; }
.article-body { animation: fadeUp 0.6s 0.2s ease both; }