/* === CSS Variables — matching WordPress TwentyTwentyThree palette === */
:root {
  --color-base: #F6F2EC;
  --color-contrast: #21251F;
  --color-primary: #5B4460;
  --color-secondary: #FCC263;
  --color-tertiary: #E7A1A9;
  --font-serif: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --color-border: rgba(91, 68, 96, 0.15);
  --color-bg-subtle: rgba(91, 68, 96, 0.05);
  --content-width: 650px;
  --wide-width: 1200px;
  --gap: 2.5rem;
}

/* === Reset === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* === Base === */
html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  color: var(--color-contrast);
  background-color: var(--color-base);
  -webkit-font-smoothing: antialiased;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 0.75em;
}

h1 { font-size: clamp(2rem, 1.5rem + 2vw, 2.625rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2rem); }
h3 { font-size: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem); }
h4 { font-size: 1.15rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; font-style: normal; font-weight: 500; }

p {
  margin-bottom: 1.25em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  text-decoration: underline;
}

strong { font-weight: 600; }

blockquote {
  border-left: 3px solid var(--color-primary);
  padding: 0.5em 1.25em;
  margin: 1.5em 0;
  font-style: italic;
  color: var(--color-primary);
}

hr {
  border: none;
  border-top: 1px solid var(--color-primary);
  opacity: 0.3;
  margin: var(--gap) 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

figure {
  margin: 1.5em 0;
}

figcaption {
  font-size: 0.85rem;
  color: var(--color-primary);
  margin-top: 0.5em;
  font-style: italic;
}

/* === Header === */
.site-header {
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-contrast);
  text-decoration: none;
  white-space: nowrap;
}

.site-title:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.site-nav a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-contrast);
  text-decoration: none;
  transition: color 0.2s;
  white-space: nowrap;
}

.site-nav a:hover {
  text-decoration: underline;
}

.site-nav a.active {
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: none;
  border: none;
  color: var(--color-contrast);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
}

/* === Main Content === */
.site-main {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: var(--gap) 2rem;
}

.page-header {
  margin-bottom: var(--gap);
}

.page-content {
  max-width: var(--content-width);
}

.page-content.wide,
.page-home .page-content,
.page-list .page-content,
.page-single .page-content {
  max-width: var(--wide-width);
}

/* === Two-Column Layout === */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: start;
}

/* === Content with Sidebar === */
.with-sidebar {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3rem;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 2rem;
  padding: 1.5rem;
  background: var(--color-bg-subtle);
  border-radius: 8px;
}

.sidebar h6 {
  text-align: center;
  margin-bottom: 0.75em;
}

.sidebar-support-text {
  text-align: center;
  font-size: 0.9rem;
  margin: 1em 0 0.75em;
  line-height: 1.5;
}

/* === Social Links === */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 0.75em 0;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--color-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  min-height: 24px;
}

.social-links svg {
  width: 20px;
  height: 20px;
  fill: var(--color-primary);
}

/* === Project Cards — unified boxed catalog entries === */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--gap);
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.4rem 1.5rem 1.5rem;
  border: 1px solid rgba(91, 68, 96, 0.22);
  border-radius: 6px;
  background: rgba(91, 68, 96, 0.05);
  overflow: hidden;
}

.project-card--placeholder {
  border-style: dashed;
}

/* Image bleeds to card edges via negative margins matching the card padding */
.project-card .card-image-link {
  display: block;
  margin: -1.4rem -1.5rem 0;
}

.project-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  border-radius: 0;
}

.project-card h4 {
  margin-bottom: 0.15em;
}

.project-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.project-card--placeholder p {
  color: var(--color-primary);
  opacity: 0.85;
}

.project-card--placeholder h4 a {
  color: var(--color-contrast);
}

.project-card--placeholder h4 a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* === Buttons === */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: calc(0.667em + 2px) calc(1.333em + 2px);
  border-radius: 50px;
  border: none;
  background: var(--color-secondary);
  color: var(--color-contrast);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s;
  text-align: center;
}

.btn:hover {
  background: var(--color-tertiary);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-base);
}

.button-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 1.25em 0;
}

/* === Details / Collapsible === */
details {
  margin: 1em 0;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0;
}

details[open] {
  padding-bottom: 1em;
}

summary {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  cursor: pointer;
  padding: 0.75em 1em;
  min-height: 44px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

summary::before {
  content: "▸";
  transition: transform 0.2s;
  font-style: normal;
}

details[open] summary::before {
  transform: rotate(90deg);
}

summary::-webkit-details-marker {
  display: none;
}

details > *:not(summary) {
  padding: 0 1em;
}

/* === Code Blocks === */
pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  background: var(--color-bg-subtle);
  border: 1px solid rgba(91, 68, 96, 0.12);
  border-radius: 6px;
  padding: 1.25em;
  overflow-x: auto;
  margin: 1.5em 0;
  white-space: pre-wrap;
  word-wrap: break-word;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

p code, li code {
  background: rgba(91, 68, 96, 0.08);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

/* === Lists === */
ul, ol {
  margin: 0 0 1.25em 1.5em;
}

li {
  margin-bottom: 0.35em;
}

li::marker {
  color: var(--color-primary);
}

/* === Sections separator === */
.section-title {
  font-size: 1.35rem;
  margin-top: 2em;
  margin-bottom: 1em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--color-border);
}

/* === Quote block (for Feyerabend quote) === */
.quote-block {
  text-align: center;
  font-style: italic;
  color: var(--color-primary);
  margin: 2em auto;
  max-width: 550px;
  font-size: 1.05rem;
  line-height: 1.5;
}

.quote-block cite {
  display: block;
  margin-top: 0.75em;
  font-size: 0.85rem;
  font-style: normal;
}

/* === Photo with border === */
.photo-bordered {
  border: 2px solid var(--color-primary);
  border-radius: 4px;
}

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}

.footer-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 1.5rem 2rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-primary);
}

/* === Utility Classes === */
.text-justify { text-align: justify; }
.text-center  { text-align: center; }

/* === Component Classes === */
.subtitle {
  text-align: center;
  font-size: 1.15rem;
}

.badge-row {
  margin: 20px 0;
  text-align: left;
}

.badge-row img {
  display: inline;
  vertical-align: middle;
  margin: 2px 4px;
}

.img-screenshot {
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.figure-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5em 0;
}

.figure-grid figure {
  margin: 0;
}

.donation-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin: 1.25em 0;
}

.donation-row h6 {
  flex: 0 0 250px;
  margin: 0;
}

.donation-row .button-row {
  flex: 1;
  margin: 0;
}

.hero-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-photo {
  max-width: 400px;
  width: 100%;
}

.hero-ascii {
  max-width: 650px;
  width: 100%;
}

.download-table {
  border-spacing: 12px 0;
  border-collapse: separate;
}

/* === Screen Reader Only === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* === Skip Link === */
.skip-link {
  position: absolute;
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 1000;
  padding: 0.75em 1.5em;
  background: var(--color-primary);
  color: var(--color-base);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 0;
  width: auto;
  height: auto;
  clip-path: none;
}

/* === Focus Styles === */
a:focus-visible,
.btn:focus-visible,
.menu-toggle:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* === Responsive === */
@media (max-width: 768px) {
  .header-inner {
    padding: 1rem 1.25rem;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-base);
    flex-direction: column;
    padding: 1rem 1.25rem;
    gap: 0.75rem;
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
  }

  .site-nav.open {
    display: flex;
  }

  .site-header {
    position: relative;
  }

  .site-main {
    padding: 1.5rem 1.25rem;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .button-row {
    flex-direction: column;
    align-items: stretch;
  }
}

/* === Projects Index — editorial-atlas treatment === */
.projects-lede {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-primary);
  max-width: 640px;
  margin: 0 0 2.75rem;
  line-height: 1.55;
}

/* Section header — single mono-caps eyebrow, no italic-serif duplicate */
.projects-index .section-eyebrow-h2 {
  font-family: var(--font-mono);
  font-style: normal;
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  opacity: 0.6;
  margin-top: 3.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.85em;
  border-bottom: 1px solid var(--color-border);
}

.projects-index > .section-eyebrow-h2:first-of-type {
  margin-top: 0.5rem;
}

/* External-link glyph — discreet, lifts on hover */
.ext::after {
  content: "↗";
  display: inline-block;
  margin-left: 0.3em;
  font-family: var(--font-mono);
  font-size: 0.78em;
  font-weight: 500;
  font-style: normal;
  color: var(--color-primary);
  opacity: 0.5;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.ext:hover::after {
  opacity: 1;
  transform: translate(2px, -2px);
}

/* === Card head: tags + numeral row === */
.card-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  min-height: 1.4rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.card-num {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  opacity: 0.4;
  white-space: nowrap;
}

/* === Chip system — generic, composable === */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25em 0.7em;
  white-space: nowrap;
}

.chip--dev::before {
  content: "◷";
  font-size: 1em;
  opacity: 0.75;
}

.chip--accent {
  border-color: rgba(252, 194, 99, 0.55);
  background: rgba(252, 194, 99, 0.14);
  color: #6e4f1d;
}

.chip--rose {
  border-color: rgba(231, 161, 169, 0.55);
  background: rgba(231, 161, 169, 0.14);
  color: #6e3b41;
}

/* Two-col variant for "Other Projects" */
.project-grid--two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 920px;
  gap: 2.5rem;
}

/* Other Papers — hanging-indent citation list */
.paper-list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  max-width: 800px;
}

.paper-list li {
  padding-left: 1.6em;
  text-indent: -1.6em;
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

.paper-list li::marker {
  content: none;
}

.paper-list .preprint-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  opacity: 0.65;
  margin-right: 0.4em;
  text-indent: 0;
}

@media (max-width: 768px) {
  .project-grid--two-col {
    grid-template-columns: 1fr;
  }

  .projects-index .section-eyebrow-h2 {
    font-size: 0.78rem;
    margin-top: 2.5rem;
  }
}