/* Catobyte · site styles
   Mobile-first: base rules target phones, @media (min-width) blocks add desktop layout.
   All colours and spacing come from the tokens below; dark mode only swaps tokens. */

/* ---- Tokens ------------------------------------------------------------- */
:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #526075;
  --border: #e2e8f0;
  --accent: #2554d9;
  --accent-strong: #1b3fa8;
  --accent-soft: #e8eefc;
  --on-accent: #ffffff;
  --success: #0f8a5f;
  --warning: #b45309;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgb(15 23 42 / 6%), 0 4px 16px rgb(15 23 42 / 6%);
  --shadow-hover: 0 2px 4px rgb(15 23 42 / 8%), 0 12px 32px rgb(15 23 42 / 10%);

  --gutter: 1.25rem;
  --max: 72rem;
  --measure: 44rem;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --bg-alt: #111a2e;
    --surface: #141e33;
    --text: #e6ebf5;
    --text-muted: #9aa8bf;
    --border: #24314d;
    --accent: #7ea2ff;
    --accent-strong: #a9c0ff;
    --accent-soft: #1b2a4d;
    --on-accent: #0b1120;
    --success: #4ade80;
    --warning: #fbbf24;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%);
    --shadow-hover: 0 8px 28px rgb(0 0 0 / 40%);
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.6em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.4rem, 1.2rem + 0.9vw, 1.85rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
img, svg, video { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
main:focus { outline: none; }

.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.muted { color: var(--text-muted); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  padding: 0.6rem 1rem; background: var(--accent); color: var(--on-accent); border-radius: var(--radius-sm);
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  margin: 0 0 0.5rem; font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted);
}
.lede { font-size: 1.15rem; color: var(--text-muted); max-width: var(--measure); }
.text-link { font-weight: 600; text-decoration: none; }
.text-link:hover { text-decoration: underline; }

/* ---- Buttons & tags ----------------------------------------------------- */
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  min-height: 2.75rem; padding: 0.6rem 1.25rem; border-radius: 999px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--on-accent);
  font-weight: 600; text-decoration: none; transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.button:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--on-accent); }
.button-ghost { background: transparent; color: var(--accent); }
.button-ghost:hover { background: var(--accent-soft); color: var(--accent-strong); }

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0; padding: 0; list-style: none; }
.tags li {
  padding: 0.15rem 0.6rem; border-radius: 999px; font-size: 0.8rem; font-weight: 500;
  background: var(--accent-soft); color: var(--accent-strong);
}

.status { font-weight: 700; }
.status-in_progress { color: var(--warning); }
.status-completed, .status-live { color: var(--success); }

/* ---- Header & navigation ------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 4rem; gap: 1rem; flex-wrap: wrap; }

.brand { display: flex; align-items: center; gap: 0.7rem; color: var(--text); text-decoration: none; }
.brand:hover { color: var(--text); }
.brand-mark {
  display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border-radius: 10px;
  background: var(--accent); color: var(--on-accent); font-weight: 800;
}
.brand-text { display: flex; flex-direction: column; font-weight: 700; line-height: 1.15; }
.brand-role { font-size: 0.78rem; font-weight: 500; color: var(--text-muted); }

.nav-toggle {
  display: none; width: 2.75rem; height: 2.75rem; padding: 0; border: 1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--surface); color: var(--text); cursor: pointer;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
  display: block; width: 1.1rem; height: 2px; margin-inline: auto; background: currentColor;
  border-radius: 2px; transition: transform 0.2s, opacity 0.2s; content: "";
}
.nav-toggle-bar { position: relative; }
.nav-toggle-bar::before { position: absolute; top: -6px; }
.nav-toggle-bar::after { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-6px) rotate(-45deg); }

.site-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 1rem; }
.nav-links, .lang-switch { display: flex; flex-wrap: wrap; gap: 0.25rem; margin: 0; padding: 0; list-style: none; }
.nav-links a, .lang-switch a {
  display: block; padding: 0.45rem 0.75rem; border-radius: var(--radius-sm);
  color: var(--text); font-weight: 500; text-decoration: none;
}
.nav-links a:hover, .lang-switch a:hover { background: var(--bg-alt); }
.nav-links a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }
.lang-switch { padding-left: 0.75rem; border-left: 1px solid var(--border); }
.lang-switch a { font-size: 0.85rem; padding: 0.35rem 0.5rem; color: var(--text-muted); }
.lang-switch a[aria-current="true"] { color: var(--text); font-weight: 700; }

/* Collapsible menu on small screens. Only when JS is available (site.js adds .js),
   so the links stay reachable if the script fails to load. */
@media (max-width: 47.99rem) {
  .js .nav-toggle { display: block; }
  .js .site-nav { display: none; width: 100%; padding-bottom: 1rem; }
  .js .site-nav.is-open { display: flex; flex-direction: column; align-items: stretch; }
  .js .nav-links { flex-direction: column; }
  .js .nav-links a { padding: 0.75rem; font-size: 1.05rem; }
  .js .lang-switch { border-left: 0; border-top: 1px solid var(--border); padding: 0.75rem 0 0; }
}

/* ---- Sections ----------------------------------------------------------- */
.section { padding-block: 3.5rem; }
.section-alt { background: var(--bg-alt); }
.section-tight { padding-block: 1rem 4rem; }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem 1rem; margin-bottom: 1.5rem; }
.section-head h2 { margin: 0; }
.page-head { padding-block: 3rem 1.5rem; }

/* ---- Hero --------------------------------------------------------------- */
.hero { padding-block: 3rem 3.5rem; }
.hero-inner { display: grid; gap: 2.5rem; align-items: center; }
.hero h1 { max-width: 22ch; }
.availability { display: flex; align-items: center; gap: 0.6rem; margin-top: 1.5rem; font-size: 0.95rem; color: var(--text-muted); }
.dot { flex: none; width: 0.6rem; height: 0.6rem; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 20%, transparent); }
.previously { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
.previously ul { display: flex; flex-wrap: wrap; gap: 0.35rem 1.25rem; margin: 0; padding: 0; list-style: none; font-weight: 600; color: var(--text-muted); }
.hero-aside { display: flex; flex-direction: column; align-items: flex-start; gap: 1.25rem; }

.avatar { display: block; flex: none; border-radius: 50%; object-fit: cover; box-shadow: var(--shadow); }
.avatar-lg { width: 9rem; height: 9rem; }
.avatar-initials {
  display: grid; place-items: center; font-size: 3rem; font-weight: 800; color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.cert {
  display: flex; align-items: center; gap: 1rem; padding: 0.9rem 1.1rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.cert p { margin: 0; }
.cert-badge { width: 4.5rem; height: auto; border-radius: 6px; background: #fff; }
.cert-name { font-weight: 700; }

/* ---- Now list ----------------------------------------------------------- */
.now-list { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.now-item {
  display: flex; flex-direction: column; gap: 0.35rem; padding: 1.25rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
}
.now-label { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); }

/* ---- Cards -------------------------------------------------------------- */
.grid { display: grid; gap: 1.25rem; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden; transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.card-link { display: flex; flex-direction: column; height: 100%; color: inherit; text-decoration: none; }
.card-link:hover { color: inherit; }
.card-image { display: block; width: 100%; aspect-ratio: 1200 / 630; object-fit: cover; border-bottom: 1px solid var(--border); }
.card-body { display: flex; flex-direction: column; gap: 0.6rem; padding: 1.25rem; flex: 1; }
.card-body > * { margin: 0; }
.card-title { font-size: 1.15rem; }
.card-text { color: var(--text-muted); font-size: 0.97rem; }
.card-cta { margin-top: auto; padding-top: 0.5rem; color: var(--accent); font-weight: 600; }

.post-card .card-link { flex-direction: row; align-items: stretch; }
.card-thumb { flex: none; width: 6.5rem; object-fit: cover; aspect-ratio: 1; align-self: flex-start; margin: 1rem 0 1rem 1rem; border-radius: var(--radius-sm); }
.post-card-compact .card-title { font-size: 1.05rem; }

.post-list { display: grid; gap: 1rem; }
.year-group + .year-group { margin-top: 2.5rem; }
.year-title { font-size: 1rem; color: var(--text-muted); border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }

/* ---- Skills ------------------------------------------------------------- */
.skills { display: grid; gap: 1.25rem; margin: 0; }
.skill-group dt { margin-bottom: 0.5rem; font-weight: 700; }
.skill-group dd { margin: 0; }

/* ---- About & contact ---------------------------------------------------- */
.about-head { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; }
.about-head .avatar-lg { width: 7rem; height: 7rem; font-size: 2.4rem; }
.principles { padding-left: 1.2rem; }
.principles li + li { margin-top: 0.6rem; }
.timeline { list-style: none; padding: 0; border-left: 2px solid var(--border); }
.timeline { margin-left: 0.4rem; }
.prose .timeline > li { position: relative; margin: 0; padding: 0 0 2rem 1.5rem; }
.timeline > li::before { content: ""; position: absolute; left: -7px; top: 0.35rem; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.prose .timeline h3 { margin: 0 0 0.25rem; }
.prose .tags { padding-left: 0; }
.prose .tags li + li { margin-top: 0; }
.timeline > li > ul:not(.tags) { margin-bottom: 0.75rem; }
.timeline .tags { margin-top: 0.5rem; }
.job-context { margin-bottom: 0.5rem; }
.missions-title { margin: 1rem 0 0.5rem; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); }
.prose .missions { display: grid; gap: 0.75rem; padding: 0; list-style: none; }
.prose .missions > li { margin: 0; padding: 1rem 1.1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
.missions p { margin: 0 0 0.4rem; }
.plain-list { padding: 0; list-style: none; }
.prose .plain-list li + li { margin-top: 0.75rem; }
.plain-list strong { display: block; }
.plain-list-inline strong { display: inline; }

.contact-grid { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.contact-card { padding: 1.4rem; }
.contact-card:hover { transform: none; }
.contact-card p { margin: 0; }
.contact-value { display: inline-block; margin: 0.2rem 0 0.4rem; font-size: 1.1rem; font-weight: 700; word-break: break-word; }

.cta-band { background: var(--accent); color: var(--on-accent); }
.cta-inner { max-width: var(--measure); text-align: center; }
.cta-band p { opacity: 0.9; }
.cta-band .button { background: var(--on-accent); color: var(--accent); border-color: var(--on-accent); }
.cta-band .button:hover { background: var(--accent-soft); color: var(--accent-strong); }

.not-found { padding-block: 5rem; }

/* ---- Articles (posts and projects) -------------------------------------- */
.article { padding-bottom: 3rem; }
.article-head { max-width: var(--measure); padding-block: 2.5rem 1.5rem; }
.article-wide .article-head { max-width: 52rem; }
.article-head .tags { margin-top: 1rem; }
.back-link { display: inline-block; margin-bottom: 1.25rem; font-weight: 600; text-decoration: none; }
.article-cover { max-width: 52rem; margin: 0 auto 2rem; }
.article-cover img, img.article-cover { display: block; width: 100%; border-radius: var(--radius); }
/* Blog covers are mostly 1024px squares: cap their height so the text starts above the fold. */
.article-cover img { width: auto; max-height: 24rem; margin-inline: auto; }
.article-cover figcaption { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-muted); text-align: center; }

.prose { max-width: var(--measure); }
.article-wide .prose, .prose-wide { max-width: 52rem; }
.prose h2 { margin-top: 2.5rem; }
.prose h3 { margin-top: 2rem; }
.prose h4, .prose h5, .prose h6 { margin-top: 1.5rem; font-size: 1.05rem; }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li + li { margin-top: 0.35rem; }
.prose blockquote { margin: 1.5rem 0; padding: 0.25rem 1.25rem; border-left: 4px solid var(--accent); color: var(--text-muted); }
.prose figure { margin: 2rem 0; text-align: center; }
.prose figure img { border-radius: var(--radius-sm); border: 1px solid var(--border); }
.prose figcaption { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-muted); }
.prose :not(pre) > code {
  padding: 0.1em 0.35em; border-radius: 5px; font-family: var(--font-mono); font-size: 0.88em;
  background: var(--bg-alt); border: 1px solid var(--border);
}
.prose pre { margin: 1.5rem 0; border-radius: var(--radius-sm); font-size: 0.88rem; }
.prose pre:not([class*="language-"]) { padding: 1rem 1.1rem; overflow-x: auto; line-height: 1.6; font-family: var(--font-mono); font-size: .875rem; background: var(--code-bg); color: var(--code-text); border: 1px solid var(--code-border); }

.table-wrap { position: relative; margin: 1.5rem 0; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table-wrap th, .table-wrap td { padding: 0.6rem 0.8rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
.table-wrap th { background: var(--bg-alt); font-weight: 700; white-space: nowrap; }
.table-wrap tr:last-child td { border-bottom: 0; }

/* Callout box inside project write-ups. */
.callout { margin: 1.5rem 0; padding: 1rem 1.25rem; border-radius: var(--radius-sm); background: var(--accent-soft); border-left: 4px solid var(--accent); }
.callout > :last-child { margin-bottom: 0; }

/* Key figures row. */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; margin: 1.5rem 0; padding: 0; list-style: none; }
.stats li { padding: 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
.stats strong { display: block; font-size: 1.75rem; line-height: 1.1; color: var(--accent); }
.stats span { font-size: 0.88rem; color: var(--text-muted); }

/* Pipeline diagram: stacked on phones, horizontal flow on wide screens. */
.pipeline { display: grid; gap: 0.75rem; margin: 1.5rem 0; padding: 0; list-style: none; counter-reset: stage; }
.prose .pipeline li + li { margin-top: 0; }
.prose .pipeline, .prose .stats { padding-left: 0; }
.pipeline li {
  position: relative; padding: 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); counter-increment: stage;
}
.pipeline li::before {
  content: counter(stage); display: inline-grid; place-items: center; width: 1.6rem; height: 1.6rem; margin-bottom: 0.4rem;
  border-radius: 50%; background: var(--accent); color: var(--on-accent); font-size: 0.8rem; font-weight: 700;
}
.pipeline li:not(:last-child)::after {
  content: "↓"; position: absolute; left: 50%; bottom: -0.95rem; transform: translateX(-50%);
  color: var(--text-muted); font-weight: 700; line-height: 1;
}
.pipeline strong { display: block; }
.pipeline span { display: block; font-size: 0.85rem; color: var(--text-muted); }
.pipeline .tool { margin-top: 0.4rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent-strong); }

/* Data Vault model diagram. */
.vault { display: grid; gap: 0.75rem; margin: 1.5rem 0; }
.vault-entity { padding: 0.9rem 1rem; border-radius: var(--radius-sm); border: 2px solid; background: var(--surface); }
.vault-entity p { margin: 0; }
.vault-entity .kind { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.vault-entity .name { font-family: var(--font-mono); font-weight: 700; }
.vault-entity .cols { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); }
.vault-hub { border-color: #2554d9; }
.vault-hub .kind { color: #2554d9; }
.vault-link { border-color: #0f8a5f; }
.vault-link .kind { color: #0f8a5f; }
.vault-sat { border-color: #b45309; border-style: dashed; }
.vault-sat .kind { color: #b45309; }
@media (prefers-color-scheme: dark) {
  .vault-hub { border-color: #7ea2ff; } .vault-hub .kind { color: #7ea2ff; }
  .vault-link { border-color: #4ade80; } .vault-link .kind { color: #4ade80; }
  .vault-sat { border-color: #fbbf24; } .vault-sat .kind { color: #fbbf24; }
}

/* Bar chart rendered from exported gold-table CSVs. */
.bar-chart { margin: 1.5rem 0; text-align: left; }
.bar-chart figcaption { font-weight: 700; margin-bottom: 0.75rem; color: var(--text); font-size: 0.95rem; }
.bar-chart ul { display: grid; gap: 0.5rem; margin: 0; padding: 0; list-style: none; }
.prose .bar-chart li + li { margin-top: 0; }
.bar-chart li { display: grid; grid-template-columns: 7rem 1fr auto; align-items: center; gap: 0.75rem; font-size: 0.9rem; }
.bar { width: 100%; height: 0.9rem; }
.bar rect { fill: var(--accent); }
.bar-value { font-variant-numeric: tabular-nums; color: var(--text-muted); }

/* ---- Data pages (project insights) -------------------------------------- */
/* Chart colours: validated categorical slots (blue, orange, aqua, yellow), a one-hue blue ramp for
   magnitude, and a grey for "not placed". Text never wears a series colour. */
:root {
  --viz-1: #2a78d6; --viz-2: #eb6834; --viz-3: #1baf7a; --viz-4: #eda100;
  --viz-seq-1: #e4eefc; --viz-seq-2: #cde2fb; --viz-seq-3: #9ec5f4; --viz-seq-4: #6da7ec;
  --viz-seq-5: #3987e5; --viz-seq-6: #256abf; --viz-seq-7: #104281;
  --viz-none: #c4cad4; --viz-track: #eef1f6; --viz-range: #9ec5f4;
  --viz-fishing: #1baf7a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --viz-1: #3987e5; --viz-2: #d95926; --viz-3: #199e70; --viz-4: #c98500;
    --viz-seq-1: #17233b; --viz-seq-2: #13315e; --viz-seq-3: #184f95; --viz-seq-4: #1c5cab;
    --viz-seq-5: #2a78d6; --viz-seq-6: #5598e7; --viz-seq-7: #9ec5f4;
    --viz-none: #3a4560; --viz-track: #1b2640; --viz-range: #1c5cab;
    --viz-fishing: #2bc48d;
  }
}

.prose-data { max-width: 52rem; }
.viz { margin: 1.75rem 0 2.25rem; }
.viz-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1rem; margin-bottom: 0.9rem; }
.viz-title { margin: 0; font-weight: 700; font-size: 0.98rem; }
.viz-note { margin: 0.75rem 0 0; font-size: 0.85rem; color: var(--text-muted); }
.viz-error { padding: 1rem; border: 1px dashed var(--border); border-radius: var(--radius-sm); color: var(--text-muted); }
.viz-toggle {
  margin-top: 0.6rem; padding: 0.3rem 0; border: 0; background: none; color: var(--accent);
  font: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer;
}
.viz-toggle:hover { text-decoration: underline; }
.viz-table { margin-top: 0.5rem; }
.table-wrap .num, .viz .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-wrap tbody th { font-weight: 600; text-align: left; white-space: normal; min-width: 9rem; }

/* Segmented control (radio buttons). */
.segmented { position: relative; display: inline-flex; flex-wrap: wrap; padding: 3px; gap: 2px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-alt); }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label { padding: 0.3rem 0.85rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600; color: var(--text-muted); cursor: pointer; }
.segmented input:checked + label { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.segmented input:focus-visible + label { outline: 3px solid var(--accent); outline-offset: 1px; }

/* Horizontal bars: label | track | value. */
.prose .bars, .bars { display: grid; gap: 0.35rem; margin: 0; padding: 0; list-style: none; }
.prose .bars li + li { margin-top: 0; }
.bars li {
  display: grid; grid-template-columns: minmax(7rem, 13rem) 1fr auto; align-items: center; gap: 0.75rem;
  padding: 0.3rem 0.4rem; border-radius: 6px; font-size: 0.88rem;
}
.bars li:hover, .bars li:focus-visible { background: var(--bg-alt); }
@media (max-width: 39.99rem) {
  .bars li { grid-template-columns: 1fr auto; gap: 0.2rem 0.6rem; }
  .bars-label { grid-column: 1 / -1; }
  .stack-rows li { grid-template-columns: 1fr; gap: 0.2rem; }
}
.bars-label { line-height: 1.25; }
.bars-label small { display: block; color: var(--text-muted); font-size: 0.75rem; }
.bars-track { position: relative; display: flex; flex-direction: column; justify-content: center; gap: 2px; height: 1.1rem; border-radius: 4px; background: var(--viz-track); }
.bars-fill { height: 100%; min-width: 2px; border-radius: 0 4px 4px 0; background: var(--viz-1); }
.bars-fill.is-highlight { background: var(--viz-2); }
.bars-thin { height: 45%; }
.bars-fill-2 { background: var(--viz-2); }
.bars-range { position: absolute; top: 0; height: 100%; border-radius: 0 4px 4px 0; background: var(--viz-range); }
.bars-na { padding-left: 0.4rem; font-size: 0.75rem; font-style: italic; color: var(--text-muted); }
.bars-value { min-width: 4.5rem; text-align: right; font-variant-numeric: tabular-nums; color: var(--text-muted); font-size: 0.85rem; }

/* Legends and swatches (shared by bars, lines, stacks). */
.prose .viz-legend, .viz-legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; margin: 0.75rem 0 0; padding: 0; list-style: none; font-size: 0.82rem; color: var(--text-muted); }
.prose .viz-legend li + li { margin-top: 0; }
.viz-legend li { display: flex; align-items: center; gap: 0.4rem; }
.swatch { display: inline-block; flex: none; width: 0.8rem; height: 0.8rem; border-radius: 3px; background: var(--viz-1); vertical-align: -0.1em; margin-right: 0.15rem; }
.swatch.s-1, .swatch.sw-1 { background: var(--viz-1); }
.swatch.s-2, .swatch.sw-2 { background: var(--viz-2); }
.swatch.s-3 { background: var(--viz-3); }
.swatch.s-4 { background: var(--viz-4); }
.swatch.sw-range { background: var(--viz-range); }

/* Line charts. */
.line-chart { display: block; width: 100%; height: auto; overflow: visible; }
.line-chart .grid { stroke: var(--border); stroke-width: 1; }
.line-chart .axis { fill: var(--text-muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.line-chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.line-chart .line-label { fill: var(--text-muted); font-size: 11px; font-weight: 600; }
.line-chart .crosshair { stroke: var(--text-muted); stroke-width: 1; stroke-dasharray: 3 3; }
.line-chart .dot { stroke: var(--surface); stroke-width: 2; }
.line-chart .s-1 { stroke: var(--viz-1); } .line-chart .dot.s-1 { fill: var(--viz-1); }
.line-chart .s-2 { stroke: var(--viz-2); } .line-chart .dot.s-2 { fill: var(--viz-2); }
.line-chart .s-3 { stroke: var(--viz-3); } .line-chart .dot.s-3 { fill: var(--viz-3); }
.line-chart .s-4 { stroke: var(--viz-4); } .line-chart .dot.s-4 { fill: var(--viz-4); }
.line-chart .dot { stroke: var(--surface); }

.multiples { display: grid; gap: 1rem; }
.multiple { padding: 0.75rem 0.75rem 0.25rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
.multiple-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem; margin: 0 0 0.25rem; font-weight: 700; font-size: 0.9rem; }
.flag { font-size: 0.72rem; font-weight: 600; color: var(--text-muted); }

/* Stacked 100% bars (geocoding precision): ordinal blue ramp, grey for "not placed". */
.prose .stack-rows, .stack-rows { display: grid; gap: 0.5rem; margin: 0; padding: 0; list-style: none; }
.prose .stack-rows li + li { margin-top: 0; }
.stack-rows li { display: grid; grid-template-columns: minmax(7rem, 13rem) 1fr; align-items: center; gap: 0.75rem; font-size: 0.88rem; }
.stack { display: flex; gap: 2px; height: 1.1rem; }
.stack-seg { min-width: 2px; }
.stack-seg:first-child { border-radius: 4px 0 0 4px; }
.stack-seg:last-child { border-radius: 0 4px 4px 0; }
.p-0 { background: var(--viz-seq-7); } .p-1 { background: var(--viz-seq-5); } .p-2 { background: var(--viz-seq-4); }
.p-3 { background: var(--viz-seq-3); } .p-4 { background: var(--viz-none); }
.swatch.p-0 { background: var(--viz-seq-7); } .swatch.p-1 { background: var(--viz-seq-5); } .swatch.p-2 { background: var(--viz-seq-4); }
.swatch.p-3 { background: var(--viz-seq-3); } .swatch.p-4 { background: var(--viz-none); }

/* Heatmap (industry mix). */
.heatmap { display: grid; grid-template-columns: minmax(8rem, 15rem) repeat(var(--cols), minmax(2.6rem, 1fr)); gap: 2px; font-size: 0.8rem; overflow-x: auto; }
.heatmap-col { text-align: center; font-weight: 700; color: var(--text-muted); padding-bottom: 0.25rem; }
.heatmap-row { padding-right: 0.5rem; line-height: 1.2; align-self: center; }
.heatmap-cell { display: grid; place-items: center; min-height: 1.9rem; border-radius: 3px; font-variant-numeric: tabular-nums; font-size: 0.75rem; font-weight: 600; }
.lvl-0 { background: var(--viz-seq-1); } .lvl-1 { background: var(--viz-seq-2); } .lvl-2 { background: var(--viz-seq-3); }
.lvl-3 { background: var(--viz-seq-4); } .lvl-4 { background: var(--viz-seq-5); color: #fff; }
.lvl-5 { background: var(--viz-seq-6); color: #fff; } .lvl-6 { background: var(--viz-seq-7); color: #fff; }
@media (prefers-color-scheme: dark) {
  .lvl-4, .lvl-5, .lvl-6 { color: #0b1120; }
  .lvl-0, .lvl-1, .lvl-2, .lvl-3 { color: var(--text); }
}

/* Data-quality and coverage tables. */
.rule-desc { display: block; color: var(--text-muted); font-size: 0.78rem; }
.severity { display: inline-block; padding: 0.05rem 0.5rem; border-radius: 999px; font-size: 0.75rem; font-weight: 700; }
.severity-warn { background: color-mix(in srgb, var(--warning) 15%, transparent); color: var(--warning); }
.severity-error { background: color-mix(in srgb, #d92d20 14%, transparent); color: #b42318; }
@media (prefers-color-scheme: dark) { .severity-error { color: #f97066; } }
.coverage td { text-align: center; font-weight: 700; }
.cov-yes { color: var(--success); }
.cov-no { color: var(--text-muted); background: var(--bg-alt); }

/* Tooltip. */
.viz-tip {
  position: fixed; z-index: 1000; max-width: 18rem; padding: 0.55rem 0.75rem; pointer-events: none;
  background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover); font-size: 0.82rem; line-height: 1.45;
}
.viz-tip b { font-variant-numeric: tabular-nums; }

/* Map. */
.viz-map { margin-top: 1.25rem; }
.map-controls { display: flex; flex-wrap: wrap; align-items: end; gap: 0.75rem 1rem; margin-bottom: 0.75rem; }
.field { display: flex; flex-direction: column; gap: 0.2rem; font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }
.field select {
  min-height: 2.4rem; max-width: 17rem; padding: 0.35rem 0.6rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text); font: inherit; font-size: 0.9rem;
}
.map-canvas { height: 26rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-alt); z-index: 0; }
.leaflet-container { font: inherit; }
.map-canvas .leaflet-tile-pane { filter: grayscale(0.85) contrast(0.9) brightness(1.04); }
@media (prefers-color-scheme: dark) {
  .map-canvas { background: #0b1120; }
  .map-canvas .leaflet-tile-pane { filter: grayscale(1) invert(1) brightness(0.85) contrast(0.85); }
}
.leaflet-popup-content { font-size: 0.85rem; line-height: 1.45; }
.map-top { margin-top: 1rem; }
.prose .map-top-list, .map-top-list { display: grid; gap: 0.15rem 1.5rem; margin: 0.5rem 0 0; padding-left: 1.4rem; font-size: 0.88rem; }
.prose .map-top-list li + li { margin-top: 0; }
.map-top-list li { display: flex; justify-content: space-between; gap: 0.5rem; }
.map-top-list button { padding: 0; border: 0; background: none; color: var(--accent); font: inherit; cursor: pointer; text-align: left; }
.map-top-list button:hover { text-decoration: underline; }
.map-top-list small { color: var(--text-muted); }

/* "Explore the data" panel on the project page and the home feature. */
.data-panel {
  display: grid; gap: 1rem; margin: 0 0 2rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent-soft), var(--surface) 70%); box-shadow: var(--shadow);
}
.data-panel h2 { margin: 0; font-size: 1.2rem; }
.data-panel p { margin: 0; color: var(--text-muted); }
.data-panel .stats { margin: 0; }
.data-panel .actions { margin-top: 0; }

.feature { display: grid; gap: 1.75rem; }
.feature-media img { display: block; width: 100%; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); }
.feature h3 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem); margin-bottom: 0.4rem; }
.feature .stats { margin: 1.25rem 0; }
.prose .feature .stats, .feature .stats { grid-template-columns: repeat(2, 1fr); }
.feature-points { margin: 0; padding-left: 1.2rem; }
.feature-points li + li { margin-top: 0.4rem; }
.feature details { margin-top: 1rem; border-top: 1px solid var(--border); padding-top: 0.75rem; }
.feature summary { cursor: pointer; font-weight: 600; color: var(--accent); }
.feature details[open] summary { margin-bottom: 0.5rem; }
.badge-new { display: inline-block; margin-left: 0.4rem; padding: 0.05rem 0.5rem; border-radius: 999px; background: var(--success); color: var(--on-accent); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; vertical-align: 0.15em; }

/* Study guides: one collapsible card per question. */
.qa-toc { margin: 1.5rem 0 2rem; padding: 1rem 1.25rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-alt); }
.qa-toc p { margin: 0 0 0.5rem; font-weight: 700; }
.prose .qa-toc ol { margin: 0; padding-left: 1.4rem; columns: 2 14rem; column-gap: 2rem; font-size: 0.92rem; }
.prose .qa-toc li + li { margin-top: 0.2rem; }
.qa-toc small { color: var(--text-muted); }
.qa-tools { position: sticky; top: 4.1rem; z-index: 5; display: flex; flex-wrap: wrap; align-items: end; gap: 0.5rem; margin: 0 0 1rem; padding: 0.6rem 0; background: var(--bg); border-bottom: 1px solid var(--border); }
.qa-tools[hidden] { display: none; }
.qa-filter { flex: 1 1 14rem; }
.qa-filter input { min-height: 2.25rem; padding: 0.3rem 0.7rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); color: var(--text); font: inherit; font-size: 0.92rem; }
.qa-status { flex-basis: 100%; margin: 0; font-size: 0.82rem; }
.qa-status:empty { display: none; }
.qa-guide h2 { scroll-margin-top: 9rem; }
.qa { scroll-margin-top: 9rem; }
.qa-tools button { min-height: 2.25rem; padding: 0.3rem 0.9rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--text); font: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer; }
.qa-tools button:hover { border-color: var(--accent); color: var(--accent); }
.qa { margin: 0.4rem 0; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
.qa > summary {
  display: flex; gap: 0.6rem; padding: 0.7rem 0.9rem; cursor: pointer; font-weight: 600; line-height: 1.4; list-style: none;
}
.qa > summary::-webkit-details-marker { display: none; }
.qa > summary::before { content: attr(data-n); flex: none; min-width: 2.2rem; color: var(--text-muted); font-variant-numeric: tabular-nums; font-size: 0.85rem; padding-top: 0.1rem; }
.qa > summary::after { content: "+"; margin-left: auto; padding-left: 0.5rem; color: var(--accent); font-weight: 700; }
.qa[open] > summary::after { content: "−"; }
.qa > summary:hover { color: var(--accent); }
.qa-answer { padding: 0 0.9rem 0.8rem 3.7rem; }
.qa-answer > :last-child { margin-bottom: 0; }
.qa-answer pre { margin: 0.75rem 0; }

/* ---- Footer ------------------------------------------------------------- */
.site-footer { padding-block: 2.5rem; border-top: 1px solid var(--border); background: var(--bg-alt); font-size: 0.92rem; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 1.5rem; }
.footer-inner p { margin: 0 0 0.25rem; }
.footer-name { font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin: 0; padding: 0; list-style: none; }
.footer-links a { color: var(--text); font-weight: 500; }

/* ---- Wider screens ------------------------------------------------------ */
@media (min-width: 40rem) {
  :root { --gutter: 2rem; }
  .grid-posts { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .vault { grid-template-columns: repeat(2, 1fr); }
  .skills { grid-template-columns: repeat(2, 1fr); }
  .multiples { grid-template-columns: repeat(2, 1fr); }
  .map-canvas { height: 32rem; }
  .data-panel { grid-template-columns: minmax(0, 1fr) auto; align-items: center; padding: 1.5rem; }
  .data-panel .stats { grid-column: 1 / -1; }
}

@media (min-width: 48rem) {
  .grid-projects { grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr)); }
  .now-list { grid-template-columns: repeat(3, 1fr); }
  .hero { padding-block: 5rem; }
  .hero-inner { grid-template-columns: minmax(0, 1fr) auto; gap: 4rem; }
  .previously { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
.previously ul { display: flex; flex-wrap: wrap; gap: 0.35rem 1.25rem; margin: 0; padding: 0; list-style: none; font-weight: 600; color: var(--text-muted); }
.hero-aside { align-items: center; }
  .avatar-lg { width: 13rem; height: 13rem; font-size: 4rem; }
  .skills { grid-template-columns: repeat(3, 1fr); }
  .card-thumb { width: 8rem; }

  /* A single project gets a wide, featured layout instead of one lonely column. */
  .grid-projects > .project-card:only-child { grid-column: 1 / -1; }
  .grid-projects > .project-card:only-child .card-link { flex-direction: row; }
  .grid-projects > .project-card:only-child .card-image {
    width: 55%; align-self: center; border-bottom: 0;
  }
  .grid-projects > .project-card:only-child .card-body { padding: 2rem; justify-content: center; }
  .grid-projects > .project-card:only-child .card-title { font-size: 1.5rem; }
  .feature { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: start; gap: 2.5rem; }
  .map-top-list { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 64rem) {
  .grid-posts { grid-template-columns: repeat(3, 1fr); }
  .page-blog .post-list { grid-template-columns: repeat(2, 1fr); }
  .vault { grid-template-columns: repeat(3, 1fr); }
  .pipeline { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
  .pipeline li:not(:last-child)::after { content: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
  .card:hover { transform: none; }
}