/* RORO blog — shared site styles */

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-paper);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img { max-width: 100%; height: auto; }

::selection { background: var(--brand-red); color: var(--fg-invert); }

/* ---------- Layout ---------- */
.wrap     { max-width: 1120px; margin: 0 auto; padding: 0 32px; }
.wrap-sm  { max-width: 800px;  margin: 0 auto; padding: 0 32px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nav-bg, rgba(255,255,255,0.85));
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--border-hair);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: 1120px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--fg-1);
}
.brand img { width: 28px; height: 28px; border-radius: 4px; display: block; }
.brand .bang { color: var(--brand-red); }

.nav-links {
  display: flex;
  gap: 2px;
}
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-2);
  padding: 8px 14px;
  border-radius: 6px;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.nav-links a:hover { background: var(--neutral-100); color: var(--fg-1); }
.nav-links a.active { color: var(--fg-1); background: var(--neutral-100); font-weight: 600; }

.nav-right { display: flex; align-items: center; gap: 14px; }
.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-2);
  border: 1px solid var(--border-hair);
  padding: 3px 7px;
  border-radius: 4px;
  background: var(--bg-paper);
}
.btn-subscribe {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-invert);
  background: var(--brand-red);
  padding: 8px 14px;
  border-radius: 8px;
  transition: background var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.btn-subscribe:hover { background: var(--brand-red-ink); }
.btn-subscribe:active { transform: translateY(1px); }

/* ---------- Footer ---------- */
.footer {
  margin-top: 96px;
  padding: 56px 32px 48px;
  border-top: 1px solid var(--border-hair);
  background: var(--bg-paper);
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 14px;
}
.footer-list { display: flex; flex-direction: column; gap: 8px; }
.footer-list a {
  font-size: 14px;
  color: var(--fg-2);
  transition: color var(--dur) var(--ease-out);
}
.footer-list a:hover { color: var(--brand-red); }
.footer .brand { font-size: 16px; }
.footer-tagline {
  font-size: 13px;
  color: var(--fg-3);
  margin-top: 12px;
  line-height: 1.55;
  max-width: 220px;
}
.footer-bottom {
  max-width: 1120px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-hair);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
}

/* ---------- Type utility ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.eyebrow .dot-red { color: var(--brand-red); }

.h-display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0;
}
.h-display .accent { color: var(--brand-red); }
.h-display .serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.h-section {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 36px;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0;
}

.lede {
  font-size: 18px;
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 580px;
}

.mono { font-family: var(--font-mono); }

/* ---------- Cards / shared ---------- */
.row-divider { border-top: 1px solid var(--border-hair); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--r-sm);
  background: var(--neutral-100);
  color: var(--fg-2);
}
.chip-cve   { background: var(--brand-red-soft); color: var(--brand-red-ink); }
.chip-ghost { background: transparent; border: 1px solid var(--border-hair); color: var(--fg-2); }

.sev-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--neutral-400);
}
.sev-dot.crit { background: var(--brand-red); }
.sev-dot.high { background: var(--brand-red); }
.sev-dot.med  { background: var(--warn); }
.sev-dot.low  { background: var(--info); }
.sev-dot.ok   { background: var(--ok); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: background var(--dur) var(--ease-out), transform var(--dur-fast) var(--ease-out), border-color var(--dur) var(--ease-out);
  border: 1px solid transparent;
}
.btn-primary { background: var(--brand-red); color: var(--fg-invert); }
.btn-primary:hover { background: var(--brand-red-ink); }
.btn-primary:active { transform: translateY(1px); }
.btn-ghost { background: var(--bg-paper); color: var(--fg-1); border-color: var(--border-line); }
.btn-ghost:hover { background: var(--neutral-050); border-color: var(--border-bold); }

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 56px;
  position: relative;
}
.hero-meta {
  display: flex;
  gap: 14px;
  margin-bottom: 24px;
  align-items: center;
  flex-wrap: wrap;
}
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-2);
  padding: 5px 10px;
  border: 1px solid var(--border-hair);
  border-radius: 999px;
  background: var(--bg-paper);
}
.hero-status .dot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(31,157,85,0.16);
}

.hero-ctas {
  margin-top: 36px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- Post list ---------- */
.post-list { margin-top: 40px; }
.post-row {
  display: grid;
  grid-template-columns: 110px 1fr 80px;
  gap: 28px;
  align-items: baseline;
  padding: 24px 0;
  border-top: 1px solid var(--border-hair);
  transition: background var(--dur) var(--ease-out);
}
.post-row:hover { background: var(--neutral-050); margin: 0 -16px; padding-left: 16px; padding-right: 16px; border-radius: 8px; }
.post-row:hover + .post-row { border-top-color: transparent; }
.post-row .date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-3);
  letter-spacing: 0.02em;
}
.post-row .meta {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.post-row h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--fg-1);
  line-height: 1.25;
}
.post-row .blurb {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--fg-2);
  margin: 8px 0 0;
  max-width: 620px;
}
.post-row .read {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  text-align: right;
}

/* ---------- Featured card ---------- */
.featured {
  background: var(--bg-cool);
  border-radius: 12px;
  padding: 48px;
  margin-top: 48px;
  border: 1px solid var(--border-hair);
  position: relative;
  overflow: hidden;
}
.featured .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-red);
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.featured .tag .bar { width: 24px; height: 2px; background: var(--brand-red); display: inline-block; }
.featured h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 44px;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0 0 16px;
  max-width: 680px;
}
.featured .blurb {
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 620px;
  margin: 0 0 24px;
}
.featured .feat-meta {
  display: flex;
  gap: 14px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
}

/* ---------- Section header ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-top: 96px;
  padding-bottom: 12px;
}
.section-head h2 { margin: 8px 0 0; }
.section-head a.more {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
  letter-spacing: 0.04em;
  white-space: nowrap;
  padding-bottom: 6px;
}
.section-head a.more:hover { color: var(--brand-red); }

/* ---------- Terminal band ---------- */
.term {
  margin-top: 48px;
  background: var(--neutral-900);
  color: #E6E8EB;
  border-radius: 12px;
  padding: 24px 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  box-shadow: var(--shadow-2);
  overflow: hidden;
  position: relative;
}
.term .prompt { color: var(--brand-red); }
.term .muted  { color: var(--neutral-400); }
.term .ok     { color: #6BD49E; }
.term .warn   { color: #F5CF62; }
.term .crit   { color: #FF8FA3; font-weight: 600; }
.term .path   { color: #9EC7FF; }
.term .cve    { color: #FF8FA3; }
.term .dim    { opacity: 0.55; }
.term .head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 11px;
  color: var(--neutral-400);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-bottom: 12px;
}
.term .head .dot { width: 10px; height: 10px; border-radius: 999px; }
.term .head .r { background: #FF6470; }
.term .head .y { background: #F5CF62; }
.term .head .g { background: #6BD49E; }
.term .cursor {
  display: inline-block;
  width: 8px; height: 14px;
  background: var(--brand-red);
  vertical-align: -2px;
  margin-left: 2px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Tool cards ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}
.tool-card {
  display: block;
  padding: 20px;
  background: var(--bg-paper);
  border: 1px solid var(--border-hair);
  border-radius: 10px;
  box-shadow: var(--shadow-1);
  transition: box-shadow var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.tool-card:hover { box-shadow: var(--shadow-2); transform: translateY(-1px); }
.tool-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-size: 13px; font-weight: 600; }
.tool-head .chip { background: var(--neutral-100); color: var(--fg-2); border-radius: 999px; font-size: 11px; padding: 3px 10px; font-weight: 500; letter-spacing: 0; text-transform: none; }
.tool-desc { font-size: 14px; color: var(--fg-2); line-height: 1.55; }
.tool-meta { display: flex; gap: 14px; margin-top: 14px; font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); }

/* ---------- Subscribe ---------- */
.subscribe-section {
  margin-top: 96px;
  padding: 56px 48px;
  background: var(--bg-cool);
  border-radius: 12px;
  border: 1px solid var(--border-hair);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
.subscribe-section input[type="email"] {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 12px 14px;
  border: 1px solid var(--border-line);
  border-radius: 8px;
  background: var(--bg-paper);
  min-width: 240px;
}

/* ---------- Archives ---------- */
.year-group { margin-top: 56px; }
.year-head {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 48px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-line);
  margin-bottom: 8px;
  align-items: baseline;
}
.year-head .yr {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--fg-1);
  line-height: 1;
}
.year-head .yr.dim { color: var(--neutral-300); }
.year-head .summary {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.archive-row {
  display: grid;
  grid-template-columns: 110px 1fr 120px 50px;
  gap: 20px;
  padding: 14px 0;
  align-items: center;
  border-top: 1px solid var(--border-hair);
  transition: color var(--dur) var(--ease-out);
}
.archive-row:first-of-type { border-top: none; }
.archive-row:hover .title { color: var(--brand-red); }
.archive-row .date { font-family: var(--font-mono); font-size: 12px; color: var(--fg-3); }
.archive-row .title { font-size: 15px; color: var(--fg-1); font-weight: 500; transition: color var(--dur) var(--ease-out); }
.archive-row .kind { font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); letter-spacing: 0.04em; text-transform: uppercase; }
.archive-row .arrow { font-family: var(--font-mono); color: var(--fg-3); text-align: right; }

/* ---------- About ---------- */
.about-hero {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  align-items: start;
  padding: 80px 0 64px;
}
.avatar-block {
  position: sticky;
  top: 100px;
}
.avatar {
  width: 240px;
  height: 240px;
  border-radius: 12px;
  background: var(--bg-cool);
  border: 1px solid var(--border-hair);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.avatar img { width: 70%; height: 70%; object-fit: contain; }
.avatar-meta {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
  display: grid;
  gap: 6px;
}
.avatar-meta .k { color: var(--fg-3); display: inline-block; width: 64px; }

.about-body h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 56px;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}
.about-body h1 .serif { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--brand-red); }

/* 8-bit pixel accent */
.pixel {
  color: var(--brand-red);
  font-family: var(--font-pixel);
  font-size: 0.55em;
  vertical-align: baseline;
  letter-spacing: 0.02em;
}
.about-body p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--neutral-700);
  margin: 0 0 16px;
  max-width: 580px;
}
.about-body p.lede { font-size: 19px; color: var(--fg-1); }
.about-body h3 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 600;
  margin: 48px 0 16px;
}

/* Timeline / CV */
.cv-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--border-hair);
  font-size: 14.5px;
}
.cv-row:first-of-type { border-top: none; }
.cv-row .yr { font-family: var(--font-mono); font-size: 12px; color: var(--fg-3); padding-top: 2px; }
.cv-row .what { color: var(--fg-1); }
.cv-row .what .role { font-weight: 600; }
.cv-row .what .org  { color: var(--fg-2); }
.cv-row .what .note { display: block; color: var(--fg-2); font-size: 14px; margin-top: 4px; max-width: 540px; }

/* ---------- Filters ---------- */
.filter-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 32px;
  padding: 10px 0;
  border-top: 1px solid var(--border-hair);
  border-bottom: 1px solid var(--border-hair);
}
.filter-btn {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--fg-2);
  background: transparent;
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.filter-btn:hover { background: var(--neutral-100); color: var(--fg-1); }
.filter-btn.active { background: var(--fg-1); color: var(--fg-invert); font-weight: 500; }
.filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  align-self: center;
  padding-right: 8px;
}

/* ---------- Post detail ---------- */
.post-head {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border-hair);
}
.post-head .kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-red);
  font-weight: 600;
  margin-bottom: 18px;
}
.post-head h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 5vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 24px;
  max-width: 820px;
}
.post-head .byline {
  display: flex;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
  align-items: center;
  flex-wrap: wrap;
}
.post-body {
  padding: 48px 0 24px;
  font-size: 17px;
  line-height: 1.72;
  color: var(--neutral-800);
}
.post-body p { margin: 0 0 18px; }
.post-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.02em;
  margin: 40px 0 14px;
  color: var(--fg-1);
}
.post-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 32px 0 12px;
  color: var(--fg-1);
}
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--neutral-100);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--border-hair);
}
.post-body pre {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  background: var(--neutral-900);
  color: #E6E8EB;
  padding: 20px 24px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 24px 0;
}
.post-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}
.post-body blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--brand-red);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 19px;
  color: var(--fg-1);
}
.post-body ul, .post-body ol { padding-left: 20px; }
.post-body ul li, .post-body ol li { margin-bottom: 8px; }
.post-body a { color: var(--brand-red); text-decoration: underline; text-underline-offset: 2px; }
.post-body a:hover { color: var(--brand-red-ink); }
.post-body img {
  border-radius: 10px;
  border: 1px solid var(--border-hair);
  margin: 24px 0;
}
.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.post-body th, .post-body td {
  padding: 10px 14px;
  border: 1px solid var(--border-hair);
  text-align: left;
}
.post-body th {
  background: var(--neutral-050);
  font-weight: 600;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* Post navigation */
.post-nav {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border-hair);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.post-nav a {
  color: inherit;
}
.post-nav .nav-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
}

/* ---------- Archives sidebar ---------- */
.arch-grid {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 48px;
  align-items: start;
}
.arch-rail {
  position: sticky;
  top: 100px;
}
.arch-rail a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
  padding: 4px 0;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-hair);
  transition: color var(--dur) var(--ease-out);
}
.arch-rail a:hover { color: var(--brand-red); }
.arch-rail .n { color: var(--fg-3); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .nav-links { display: none; }
  .post-row { grid-template-columns: 1fr; gap: 6px; }
  .post-row .read { text-align: left; }
  .about-hero { grid-template-columns: 1fr; gap: 24px; }
  .avatar-block { position: static; }
  .avatar { width: 160px; height: 160px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .featured { padding: 28px; }
  .featured h2 { font-size: 32px; }
  .year-head { grid-template-columns: 1fr; }
  .year-head .yr { font-size: 48px; }
  .archive-row { grid-template-columns: 1fr; gap: 4px; }
  .tool-grid { grid-template-columns: 1fr; }
  .subscribe-section { grid-template-columns: 1fr; padding: 32px; }
  .arch-grid { grid-template-columns: 1fr; }
  .arch-rail { position: static; }
}

/* ---------- Dark mode overrides ---------- */
[data-theme="dark"] {
  --nav-bg: rgba(19, 21, 23, 0.85);
}

[data-theme="dark"] .post-body pre {
  background: #0A0B0C;
  border: 1px solid var(--border-hair);
}

[data-theme="dark"] .term {
  background: #0A0B0C;
  border: 1px solid var(--border-hair);
}

[data-theme="dark"] ::selection {
  background: var(--brand-red);
  color: #fff;
}

[data-theme="dark"] .filter-btn.active {
  background: var(--fg-1);
  color: var(--fg-invert);
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--border-hair);
  border-radius: 6px;
  background: transparent;
  color: var(--fg-2);
  cursor: pointer;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.theme-toggle:hover {
  background: var(--neutral-100);
  color: var(--fg-1);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun  { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }

/* ---------- Mermaid diagrams ---------- */
.mermaid-wrap {
  margin: 32px 0;
  position: relative;
}
.mermaid-container {
  padding: 40px 32px;
  min-height: 320px;
  background: var(--neutral-050);
  border: 1px solid var(--border-hair);
  border-radius: 10px;
  text-align: center;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mermaid-container.grabbing { cursor: grabbing; }
.mermaid-container .mermaid-inner {
  transform-origin: center center;
  transition: transform var(--dur) var(--ease-out);
  width: 100%;
}
.mermaid-container.panning .mermaid-inner { transition: none; }
.mermaid-container svg {
  max-width: 100%;
  height: auto;
  display: block;
}
.mermaid-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 4px;
  z-index: 2;
}
.mermaid-controls button {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border-hair);
  border-radius: 6px;
  background: var(--bg-paper);
  color: var(--fg-2);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
  box-shadow: var(--shadow-1);
}
.mermaid-controls button:hover {
  background: var(--neutral-100);
  color: var(--fg-1);
}
.mermaid-zoom-level {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-3);
  align-self: center;
  min-width: 32px;
  text-align: center;
}
[data-theme="dark"] .mermaid-container {
  background: #0A0B0C;
}

/* Fullscreen overlay */
.mermaid-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  touch-action: none;
}
.mermaid-fullscreen.grabbing { cursor: grabbing; }
.mermaid-fullscreen .mermaid-inner {
  transform-origin: 0 0;
}
.mermaid-fullscreen .mermaid-controls {
  position: fixed;
  top: 20px;
  right: 20px;
}
.mermaid-fullscreen svg {
  max-width: none;
  height: auto;
}