/* Noumena Blog - Light Mode */
/* Variables are defined in research.css on .research-wrapper */

/* Scoped reset for research section only */
.research-wrapper * { box-sizing: border-box; margin: 0; padding: 0; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  top: 1rem;
  left: 1rem;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  background: var(--bg);
  color: var(--fg);
  z-index: 1000;
  outline: 2px solid var(--accent);
}

/* html and body styles removed - applied via .research-wrapper in research.css */

/* Main shells */
#main {
  padding: 5rem 1.5rem 6rem;
}

#main.home {
  max-width: none;
  margin: 0;
  padding: 5rem 0 6rem 8vw;
  display: grid;
  grid-template-columns: 680px 1fr;
  gap: 0;
  align-items: start;
}

.home-content {
  max-width: 680px;
}

.series-nav {
  position: fixed;
  right: 3rem;
  top: 5rem;
}

.series-nav-inner {
  text-align: right;
}

.series-nav h3 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  margin-bottom: 1rem;
}

.series-nav a {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--fg4);
  text-decoration: none;
  padding: 0.4rem 0;
  transition: color var(--transition-fast);
}

.series-nav a:hover,
.series-nav a.active {
  color: #4A90A4;
}

.series-page-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #4A90A4;
  margin-bottom: 0.5rem;
}

.series-page-desc {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--fg4);
  margin-bottom: 2.5rem;
}

.series-list {
  list-style: none;
  padding: 0;
}

.series-list li {
  padding: 1rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--fg5) 15%, transparent);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.series-list a {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--fg1);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.series-list a:hover {
  color: #4A90A4;
}

.series-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-muted);
}

@media (max-width: 1100px) {
  .series-nav {
    display: none;
  }
  #main.home {
    grid-template-columns: 1fr;
    padding: 5rem 1.5rem 6rem 1.5rem;
  }
  .home-content {
    max-width: none;
  }
}

#main.post {
  margin-left: auto;
  margin-right: auto;
  max-width: 950px;
  position: relative;
  --sidenote-width: 200px;
  --sidenote-gap: 28px;
  --toc-width: var(--sidenote-width);
  --toc-gap: calc(var(--sidenote-gap) + 6px);
}

@media (min-width: 1200px) { #main.post { max-width: 970px; --sidenote-width: 210px; } }
@media (min-width: 1400px) { #main.post { max-width: 990px; --sidenote-width: 220px; } }
@media (min-width: 1600px) { #main.post { max-width: 1010px; --sidenote-width: 250px; } }
@media (min-width: 1800px) { #main.post { max-width: 1030px; --sidenote-width: 280px; } }

/* Post logo */
.post-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.post-logo img {
  height: 69px;
  width: auto;
  opacity: 0.85;
  transition: opacity var(--transition-base);
}

.post-logo a:hover img {
  opacity: 1;
}

/* Post header */
.post-heading {
  text-align: center;
  margin-bottom: 3.5rem;
}

.post-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 38px;
  line-height: 1.25;
  max-width: 600px;
  margin: 0 auto;
  color: var(--fg1);
  text-wrap: balance;
  letter-spacing: -0.015em;
}

.post-subtitle {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 20px;
  color: var(--fg4);
  margin: 1rem auto 0;
  max-width: 540px;
  font-style: italic;
  line-height: 1.5;
}

.publish-metadata {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--fg-muted);
  font-size: 14px;
  margin-top: 1.75rem;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
}

.publish-metadata .author {
  color: var(--fg4);
}

.publish-metadata .author::after {
  content: "·";
  margin-left: 0.5rem;
  color: var(--fg-muted);
}

.post-cover {
  text-align: center;
  margin: 3rem 0 4rem;
}

.post-cover img {
  display: block;
  width: 100%;
  max-width: 800px;
  height: auto;
  margin: 0 auto;
  border-radius: 4px;
}

/* Article center column */
#main.post article.content {
  margin-left: auto;
  margin-right: auto;
  max-width: 640px;
  position: relative;
  overflow: visible;
}

/* Left TOC */
#main.post .left-toc {
  position: absolute;
  top: 0;
  left: calc(-1 * var(--toc-width) - var(--toc-gap));
  width: var(--toc-width);
  margin: 0;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-muted);
}

#main.post .left-toc .toc-list { list-style: none; padding-left: 0; margin: 0; }

#main.post .left-toc .toc-item { margin: 0 0 0.6rem 0; }
#main.post .left-toc .toc-level-3 { margin-left: 0.75rem; }

#main.post .left-toc a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

#main.post .left-toc a:hover {
  color: var(--fg2);
}

/* Content typography */
.content { text-wrap: pretty; }

.content :last-child { margin-bottom: 0; }

.content p { margin: 0 0 var(--space-3) 0; }

.content a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-color: color-mix(in srgb, var(--fg-muted) 55%, transparent);
  text-decoration-thickness: from-font;
  text-underline-offset: 0.18em;
  text-decoration-skip-ink: auto;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.content a:hover {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 65%, transparent);
}

.content strong { color: var(--fg1); font-weight: 600; }

.content h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.35;
  text-align: left;
  margin-top: calc(var(--space-5) + var(--space-1));
  margin-bottom: var(--space-2);
  color: var(--fg1);
  letter-spacing: -0.01em;
}

.content h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  margin-top: var(--space-4);
  margin-bottom: var(--space-1);
  color: var(--fg2);
}

.content hr {
  border: 0;
  height: 1px;
  background: color-mix(in srgb, var(--fg5) 25%, transparent);
  margin: var(--space-5) 0;
}

/* Lists */
.content ul, .content ol {
  margin: 0 0 var(--space-3) 0;
  padding-left: 1.5rem;
}

.content li { margin: 0 0 0.6rem 0; }
.content li::marker { color: var(--fg-muted); }

/* Blockquotes */
.content blockquote {
  background: var(--pop);
  border-left: 2px solid var(--accent);
  border-radius: 2px;
  padding: 1.25rem 1.5rem;
  margin: var(--space-4) 0;
  color: var(--fg2);
}

.content blockquote p {
  margin-bottom: 0.75rem;
}

.content blockquote p:last-child {
  margin-bottom: 0;
}

.content blockquote blockquote {
  background: var(--bg_code);
  border-left-color: var(--accent2);
  margin: 1rem 0;
}

/* Tables */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: 14px;
  font-family: var(--font-mono);
}

.content th {
  text-align: left;
  padding: 0.75rem 1rem;
  color: var(--fg4);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 1px solid color-mix(in srgb, var(--fg5) 40%, transparent);
}

.content td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--fg5) 20%, transparent);
  color: var(--fg2);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 13px;
}

/* Code */
.content code {
  font-family: var(--font-mono);
  color: var(--fg2);
  background: color-mix(in srgb, var(--bg_code) 70%, transparent);
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
  font-size: 0.88em;
  white-space: break-spaces;
}

.content pre {
  background: var(--pop);
  border-radius: 4px;
  font-family: var(--font-mono);
  position: relative;
  overflow-x: hidden;
  padding: 1.25rem 1.5rem;
  margin: var(--space-4) 0;
  border: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  font-variant-ligatures: none;
}

.highlight { margin: var(--space-4) 0; }
.highlight pre { margin: 0; }

.content pre code {
  padding: 0;
  background: none;
  color: var(--fg3);
  font-size: 13px;
  display: block;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
  letter-spacing: 0;
  font-weight: 400;
}

.content pre:has(code[data-lang]) { padding-top: 2.25rem; }

.content pre code[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 0.65rem;
  left: 1rem;
  z-index: 5;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
  text-transform: uppercase;
  pointer-events: none;
}

/* Minimal Chroma palette */
.chroma .c, .chroma .c1, .chroma .cm { color: #7a8288; font-style: italic; }
.chroma .k, .chroma .kd, .chroma .kn, .chroma .kp { color: var(--accent); }
.chroma .s, .chroma .s1, .chroma .s2, .chroma .sa, .chroma .sb, .chroma .sc, .chroma .sd { color: #8a7560; }
.chroma .mi, .chroma .mf, .chroma .mh { color: #b58900; }
.chroma .nf, .chroma .nb { color: #6a8a9a; }
.chroma .o { color: var(--fg4); }
.chroma .n { color: var(--fg3); }
.chroma .p { color: var(--fg4); }

/* KaTeX */
.katex-display { margin: var(--space-4) 0; overflow: hidden; }

/* Images */
.content figure { margin: var(--space-4) 0; }
.content img, .content svg { max-width: 100%; height: auto; border-radius: 4px; }
.content figcaption {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--fg-muted);
  margin-top: 0.75rem;
  text-align: center;
}

/* Figures: charts need more real estate than prose. */
@media (min-width: 1100px) {
  #main.post article.content figure {
    margin-left: -60px;
    margin-right: -60px;
  }

  #main.post article.content figure > img,
  #main.post article.content figure > svg {
    width: 100%;
    max-width: none;
  }
}

/* Mermaid */
.mermaid {
  margin: var(--space-4) 0;
  padding: var(--space-2);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  border-radius: 4px;
  background: var(--bg_code);
}

.mermaid svg {
  display: block;
  margin: 0 auto;
  max-width: 100% !important;
  height: auto;
}

/* Sidenotes (JS transforms Hugo footnotes into this structure) */
.margin-toggle { display: none; }

.sidenote-number {
  font-family: var(--font-sans);
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
  color: var(--fg4);
  cursor: pointer;
  padding: 0 0.15rem;
  position: relative;
  top: -0.02em;
}

.sidenote {
  float: right;
  clear: right;
  width: var(--sidenote-width);
  margin-right: calc(-1 * var(--sidenote-width) - var(--sidenote-gap));
  margin-left: var(--sidenote-gap);
  margin-top: 0.3rem;
  margin-bottom: 24px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.45;
  color: var(--fg-muted);
  border-left: 2px solid color-mix(in srgb, var(--fg5) 45%, transparent);
  padding-left: 0.75rem;
}

.sidenote p { margin-bottom: 0.5rem; }
.sidenote :last-child { margin-bottom: 0; }

.sidenote a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, var(--fg5) 45%, transparent);
}

.sidenote a:hover {
  color: var(--fg2);
  text-decoration-color: color-mix(in srgb, var(--fg2) 35%, transparent);
}

body.has-sidenotes section.footnotes { display: none; }

/* Paginator */
.paginator {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 640px;
  margin: 5rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid color-mix(in srgb, var(--fg5) 20%, transparent);
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--fg-muted);
}

.paginator .link {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.paginator .link:hover {
  color: var(--fg2);
}

.paginator .disabled { opacity: 0.4; }

/* Index / Research page */
.index-header {
  padding-bottom: 3rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid color-mix(in srgb, var(--fg5) 20%, transparent);
}

.research-logo {
  display: block;
  height: 38px;
  width: auto;
}

.post-list { list-style: none; padding: 0; }

.post-list li {
  padding: 2.25rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--fg5) 15%, transparent);
  transition: background var(--transition-base);
}

.post-list li:first-child {
  padding-top: 0;
}

.post-number {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}

.post-list-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.35;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.post-list-title a {
  color: var(--fg1);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.post-list-title a:hover {
  color: var(--accent);
}

.excerpt {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--fg4);
  margin: 0 0 0.6rem 0;
  line-height: 1.6;
}

.date {
  font-family: var(--font-sans);
  color: var(--fg-muted);
  font-size: 13px;
  letter-spacing: 0.01em;
}

/* Series tag (inline with post number) */
.series-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #4A90A4;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.series-tag:hover {
  color: #3a7a8f;
}

.post-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.post-header .post-number {
  margin-bottom: 0;
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.12rem 0.4rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--fg5) 30%, transparent);
  color: var(--fg4);
  background: color-mix(in srgb, var(--bg_s) 82%, transparent);
}

.status-framing {
  color: #8f5a35;
  border-color: color-mix(in srgb, #8f5a35 35%, transparent);
  background: color-mix(in srgb, #8f5a35 12%, transparent);
}

.status-hypothesis {
  color: #4a6688;
  border-color: color-mix(in srgb, #4a6688 35%, transparent);
  background: color-mix(in srgb, #4a6688 12%, transparent);
}

.status-result {
  color: #2d7557;
  border-color: color-mix(in srgb, #2d7557 35%, transparent);
  background: color-mix(in srgb, #2d7557 12%, transparent);
}

.status-unknown {
  color: var(--fg-muted);
}

.post-status-row {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.post-status-row .status-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* Footer */
#footer {
  border-top: 1px solid color-mix(in srgb, var(--fg5) 20%, transparent);
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--fg-muted);
  font-family: var(--font-sans);
  font-size: 13px;
}

.footer-wordmark {
  display: inline-block;
  margin-bottom: 0.5rem;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer-wordmark:hover {
  opacity: 0.9;
}

.footer-wordmark img { height: 20px; width: auto; }

.footer-meta {
  color: var(--fg-muted);
}

/* Responsive */
@media (max-width: 900px) {
  #main.post .left-toc { display: none; }
  .sidenote {
    float: none;
    clear: both;
    width: auto;
    margin: 0.75rem 0 1.25rem;
    padding: 1rem 1.25rem;
    border-left: 2px solid color-mix(in srgb, var(--accent) 60%, transparent);
    background: color-mix(in srgb, var(--bg_s) 60%, transparent);
    border-radius: 2px;
  }

  .sidenote { display: none; }
  .margin-toggle:checked + .sidenote { display: block; }
}

@media (max-width: 700px) {
  #main { padding: 3rem 1.25rem 4rem; }
  .post-title { font-size: 28px; }
  .post-subtitle { font-size: 17px; }
  .content h2 { font-size: 21px; margin-top: 3.5rem; }
  .content h3 { font-size: 17px; margin-top: 2.5rem; }
}