:root {
  --bg: #f7f4fc;
  --surface: #ffffff;
  --ink: #221a33;
  --ink-soft: #5b5468;
  --accent: #6c4fe0;
  --accent-ink: #4c33b3;
  --accent-soft: #ede7fb;
  --line: #ddd3f0;
  --code-bg: #1e1a2e;
  --code-text: #e7e2f5;
  --code-key: #b9a3ff;
 
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
 
  --measure: 68ch;
}
 
* { box-sizing: border-box; }
 
html { scroll-behavior: smooth; }
 
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
}
 
a {
  color: var(--accent-ink);
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
}
a:hover { text-decoration-color: currentColor; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
 
img { max-width: 100%; }
 
/* ---------- layout shell ---------- */
 
.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.75rem;
}
 
/* ---------- top nav ---------- */
 
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 244, 252, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
 
.site-nav .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}
 
.site-nav .wrap ul { margin-top: 0.5rem; }
 
.site-nav .wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}
 
.site-nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
  font-size: 0.94rem;
}
 
.site-nav li + li { margin-left: 1.5rem; }
 
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
 
.site-nav a:hover { color: var(--ink); }
 
.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
 
/* ---------- hero / page header ---------- */
 
.hero {
  padding: 3.5rem 0 2.5rem;
}
 
.hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 0.85rem;
  max-width: 18ch;
}
 
.hero .tagline {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin: 0 0 1.1rem;
}
 
.hero .lede {
  max-width: var(--measure);
  color: var(--ink-soft);
}
 
/* stack of technology pills, reused on index rows and project heroes */
 
.stack {
  display: flex;
  flex-wrap: wrap;
  margin: -0.25rem 0 0;
  padding: 0;
  list-style: none;
}
 
.stack li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0.25rem 0.55rem;
  margin: 0.25rem 0.5rem 0 0;
}
 
/* ---------- content sections ---------- */
 
section { padding: 2.25rem 0; }
 
section + section { border-top: 1px solid var(--line); }
 
h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.5rem;
  margin: 0 0 0.9rem;
}
 
section > h2:not(:first-child) { margin-top: 0.25rem; }
 
p { max-width: var(--measure); }
 
.lede-block p + p { margin-top: 0.9rem; }
 
ul.plain, ol.plain {
  max-width: var(--measure);
  padding-left: 1.25rem;
}
ul.plain li, ol.plain li { margin-bottom: 0.4rem; }
 
blockquote {
  margin: 1.25rem 0;
  padding: 0.2rem 0 0.2rem 1.1rem;
  border-left: 3px solid var(--accent);
  max-width: var(--measure);
  color: var(--ink-soft);
  font-style: italic;
}
 
/* ---------- project index: table of records ---------- */
 
.records {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.97rem;
}
 
.records-note {
  color: var(--ink-soft);
  margin: 0 0 1rem;
  font-size: 0.94rem;
}
 
.records th {
  text-align: left;
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 0.82rem;
  padding: 0 0.75rem 0.6rem 0;
  border-bottom: 1px solid var(--line);
}
 
.records td {
  padding: 1.1rem 0.75rem 1.1rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
 
.records tr:hover td { background: var(--accent-soft); }
 
.records .rec-name {
  font-weight: 600;
  white-space: nowrap;
}
 
.records .rec-desc { color: var(--ink-soft); }
 
.records .rec-link a {
  white-space: nowrap;
  font-weight: 600;
  text-decoration: none;
}
.records .rec-link a:hover { text-decoration: underline; }
 
@media (max-width: 640px) {
  .records thead { display: none; }
  .records, .records tbody, .records tr, .records td {
    display: block;
    width: 100%;
  }
  .records tr { padding: 1rem 0; border-bottom: 1px solid var(--line); }
  .records td { border: none; padding: 0.2rem 0; }
  .records .rec-link { margin-top: 0.5rem; }
}
 
/* ---------- resource list on project pages ---------- */
 
.resources {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: var(--measure);
}
 
.resources li {
  border-top: 1px solid var(--line);
}
.resources li:last-child { border-bottom: 1px solid var(--line); }
 
.resources a {
  display: block;
  padding: 0.7rem 0;
  text-decoration: none;
  color: var(--ink);
}
 
.resources a:hover { color: var(--accent-ink); }
 
.resources a::after {
  content: "";
}
 
/* ---------- code ---------- */
 
pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1rem 1.2rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
}
 
code {
  font-family: var(--font-mono);
}
 
p code, li code {
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.88em;
}
 
/* ---------- comparison table (firebase page) ---------- */
 
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.92rem;
}
 
.data-table th, .data-table td {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--line);
}
 
.data-table thead th {
  background: var(--accent-soft);
  color: var(--accent-ink);
}
 
.data-table tbody tr:nth-child(even) { background: #fbfaff; }
 
/* ---------- footer ---------- */
 
.back-link {
  display: inline-block;
  margin: 0.5rem 0 0;
  font-size: 0.95rem;
}
 
footer {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
  padding: 1.75rem 0 2.5rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}