/* ============================================================
   Mukul Kumar Mishra — GitHub Pages
   Theme inherits the pulseflow design language:
     - Sora display font, CSS token system (ink/panel/line/lime/
       hot/cyan/mist/paper/heading)
     - light default, .dark override via toggle button
   Article/content styling inspired by ISW (libre-baskerville
   headings, montserrat body, white bg, grey text, navy+gold
   accents) — original layout & tokens, no copied footprint.
   ============================================================ */

:root {
  --font-display: "Sora", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: "Montserrat", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Libre Baskerville", "Georgia", "Times New Roman", serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "Consolas", monospace;

  /* pulseflow tokens (light) */
  --ink: #f8fafc;
  --panel: #ffffff;
  --line: #e6ebf2;
  --lime: #16a34a;
  --hot: #e11d48;
  --cyan: #0369a1;
  --mist: #475569;
  --paper: #1e293b;
  --heading: #0f172a;

  --card: #ffffff;
  --card-muted: #f4f7fb;
  --navy: #042e4e;
  --gold: #83663e;

  --radius: 14px;
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.06), 0 8px 24px -12px rgba(16, 24, 40, 0.12);
}

:root.dark {
  --ink: #0b1220;
  --panel: #101a2c;
  --line: #22304a;
  --lime: #a3e635;
  --hot: #fb7185;
  --cyan: #38bdf8;
  --mist: #93a4ba;
  --paper: #e6edf6;
  --heading: #ffffff;

  --card: #12203a;
  --card-muted: #0e182c;
  --navy: #9cc3e8;
  --gold: #d9b98a;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  background-color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.2s ease, color 0.2s ease;
}

img { max-width: 100%; display: block; }
a { color: var(--cyan); transition: color 0.15s ease; }
a:hover { color: var(--lime); text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 2px; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--heading);
  margin: 0 0 0.5em;
  line-height: 1.22;
  letter-spacing: -0.01em;
  transition: color 0.2s ease;
}

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

/* ---------- Layout shell ---------- */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 22px;
}

.site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--ink);
}
.site > main { min-width: 0; }

/* ---------- Top bar / nav ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar > .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--heading);
  letter-spacing: -0.02em;
}
.brand:hover { color: var(--heading); }
.brand .acc { color: var(--lime); }

.topnav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.topbar > .wrap { position: relative; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
#navToggle { display: none; }
.topnav a {
  padding: 7px 12px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--paper);
}
.topnav a:hover { color: var(--heading); background: var(--card-muted); }
.topnav a.on { color: #15803d; background: color-mix(in srgb, var(--lime) 14%, var(--panel)); border: 1px solid color-mix(in srgb, var(--lime) 22%, transparent); }
:root.dark .topnav a.on { color: var(--lime); }

.iconbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--paper);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.iconbtn:hover { color: var(--heading); border-color: var(--cyan); background: var(--card-muted); }
.iconbtn svg, .iconbtn i { width: 18px; height: 18px; }
.profile-hero-actions .iconbtn { background: var(--heading); border-color: var(--heading); color: var(--panel); }
.profile-hero-actions .iconbtn:hover { background: var(--cyan); border-color: var(--cyan); color: #fff; }
.profile-hero-actions .social-link { width: auto; min-width: 92px; padding: 0 11px; gap: 7px; font-family: var(--font-display); font-size: 0.72rem; font-weight: 700; text-decoration: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 18px;
  border-radius: 11px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: filter 0.15s, transform 0.15s, border-color 0.15s, background 0.15s;
}
.btn-primary { background: var(--lime); color: #fff !important; box-shadow: 0 2px 6px rgba(0,0,0,0.08); }
.btn-primary:hover { filter: brightness(1.07); transform: translateY(-1px); color: #fff !important; }
:root.dark .btn-primary { color: #052e16 !important; }
:root.dark .btn-primary:hover { color: #052e16 !important; }

.btn-ghost {
  background: var(--panel);
  color: var(--paper);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--mist); color: var(--heading); }

/* ---------- Hero / page header ---------- */
.page-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  font-family: var(--font-display);
}
.page-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  line-height: 1.12;
  color: var(--heading);
}
.page-lede {
  margin-top: 0.6rem;
  max-width: 40rem;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- Section headers ---------- */
.sec {
  margin: 0 0 2.2rem;
}
.sec-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.7rem;
  margin-bottom: 1.4rem;
}
.sec-title {
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--heading);
}
.sec-title i { color: var(--lime); }
.sec-link {
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-mono);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.sec-link:hover { text-decoration: underline; }
.disclosure-button { display: inline-flex; align-items: center; gap: 7px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--paper); font-family: var(--font-display); font-size: 0.76rem; font-weight: 700; cursor: pointer; }
.disclosure-button:hover { border-color: var(--cyan); color: var(--heading); }
.disclosure-button svg { width: 15px; height: 15px; transition: transform 0.18s ease; }
.disclosure-button[aria-expanded="true"] svg { transform: rotate(180deg); }

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.stat .num { font-family: var(--font-mono); font-weight: 700; font-size: 1.6rem; color: var(--lime); line-height: 1; }
.stat .lbl { font-size: 0.75rem; color: var(--mist); margin-top: 6px; }

.project-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.18s, transform 0.18s, box-shadow 0.18s;
}
.project-card:hover { border-color: var(--cyan); transform: translateY(-2px); box-shadow: 0 12px 28px -14px rgba(16,24,40,0.25); }
.project-card .title { font-size: 1rem; font-weight: 700; color: var(--heading); margin-bottom: 6px; }
.tag {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--cyan) 10%, transparent);
  color: var(--cyan);
  border: 1px solid color-mix(in srgb, var(--cyan) 25%, transparent);
  white-space: nowrap;
}
.desc { font-size: 0.82rem; color: var(--mist); line-height: 1.6; }
.bullets { font-size: 0.82rem; color: var(--mist); line-height: 1.6; margin: 4px 0 0; padding-left: 18px; }
.bullets li { margin: 3px 0; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cyan);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 0;
}
.icon-btn:hover { color: var(--lime); }

/* Featured link card */
.feature-link {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  color: var(--paper);
  transition: border-color 0.18s, transform 0.18s, box-shadow 0.18s;
}
.feature-link:hover { border-color: var(--lime); transform: translateY(-2px); color: var(--paper); }
.feature-link .fl-tag {
  font-size: 0.72rem;
  font-weight: 700;
  font-family: var(--font-display);
  padding: 3px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--gold) 12%, transparent);
  color: var(--gold);
  border: 1px solid color-mix(in srgb, var(--gold) 30%, transparent);
}
.feature-link h3 { font-size: 1.2rem; font-weight: 700; color: var(--heading); margin: 12px 0 8px; transition: color 0.15s; }
.feature-link-title { color: var(--heading); text-decoration: none; }
.feature-link-title:hover { color: var(--lime); }
.feature-link:hover h3 { color: var(--heading); }
.feature-link:hover .feature-link-title { color: var(--lime); }
.fl-desc { font-size: 0.86rem; color: var(--mist); line-height: 1.6; }

/* ---------- Forms ---------- */
.field { margin-top: 6px; }
.field-label { display: block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--mist); }
.field-input {
  margin-top: 5px;
  width: 100%;
  min-height: 42px;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 9px 13px;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--paper);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field-input:focus { border-color: var(--lime); box-shadow: 0 0 0 3px color-mix(in srgb, var(--lime) 18%, transparent); }

/* ---------- Callout ---------- */
.callout {
  border-radius: var(--radius);
  padding: 16px 18px;
  border-left: 4px solid var(--gold);
  background: color-mix(in srgb, var(--gold) 7%, var(--card));
  color: var(--paper);
  font-size: 0.9rem;
}
.callout strong { color: var(--gold); display: block; margin-bottom: 4px; }

/* ---------- Article prose (ISW-inspired) ---------- */
.prose {
  font-family: var(--font-serif);
  color: var(--paper);
  font-size: 1.05rem;
  line-height: 1.82;
  max-width: 62ch;
}
.prose h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--navy);
  margin: 2rem 0 0.75rem;
}
.prose h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--gold);
  margin: 1.6rem 0 0.6rem;
}
.prose h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  margin: 1.4rem 0 0.5rem;
}
.prose p { margin: 0 0 1.1em; }
.prose a { color: var(--cyan); }
.prose a:hover { color: var(--lime); }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.4em; color: var(--paper); }
.prose li { margin: 0.35em 0; }
.prose strong { color: var(--heading); }
.prose blockquote {
  margin: 1.2em 0;
  padding: 0.6em 1em;
  border-left: 3px solid var(--gold);
  background: color-mix(in srgb, var(--gold) 7%, var(--card));
  color: var(--mist);
  font-style: italic;
}
.prose table { display: block; width: 100%; max-width: calc(100vw - 32px); overflow-x: auto; -webkit-overflow-scrolling: touch; border-collapse: collapse; font-family: var(--font-body); font-size: 0.88rem; margin: 1.2em 0; }
.prose th { background: var(--card-muted); color: var(--cyan); font-family: var(--font-display); font-weight: 700; text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.prose td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose tr:last-child td { border-bottom: none; }
.prose .muted { color: var(--mist); }
.article-figure { margin: 1.6rem 0 2rem; }
.article-figure img { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
.article-figure figcaption { margin-top: 8px; color: var(--mist); font-family: var(--font-body); font-size: 0.72rem; line-height: 1.55; text-align: center; }
.pm-meme { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 14px 14px 10px; }
.pm-meme img { border-radius: 10px; }
.pm-meme figcaption { font-size: 0.78rem; }
.pm-meme figcaption strong { color: var(--lime); }
.calc-tabs { display: flex; gap: 8px; overflow-x: auto; max-width: calc(100vw - 32px); padding: 4px 2px 14px; margin-bottom: 6px; -webkit-overflow-scrolling: touch; }
.calc-tab { flex: none; font-family: var(--font-display); font-weight: 700; font-size: 0.82rem; padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--paper); cursor: pointer; white-space: nowrap; }
.calc-tab:hover { border-color: var(--cyan); color: var(--heading); }
.calc-tab[aria-selected="true"] { background: var(--lime); border-color: var(--lime); color: #fff; }
.article-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.article-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; color: var(--paper); text-decoration: none; }
.article-card:hover { color: var(--paper); }
.article-card img { width: 100%; aspect-ratio: 1.91 / 1; object-fit: cover; border-bottom: 1px solid var(--line); }
.article-card-visual { display: flex; align-items: flex-end; aspect-ratio: 1.91 / 1; padding: 18px; border-bottom: 1px solid var(--line); background: radial-gradient(circle at 75% 25%, color-mix(in srgb, var(--cyan) 32%, transparent), transparent 28%), linear-gradient(135deg, var(--card-muted), var(--card)); color: var(--cyan); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; }
.article-card-body { display: flex; flex: 1; flex-direction: column; padding: 18px; }
.article-card h3 { margin: 12px 0 8px; font-size: 1.02rem; line-height: 1.35; }
.article-card .fl-desc { margin: 0; }
.article-card .article-read { margin-top: auto; padding-top: 16px; color: var(--cyan); font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700; }
.article-card:hover .article-read { color: var(--lime); }
.calc-grid { display: grid; grid-template-columns: minmax(280px, 340px) minmax(0, 1fr); gap: 20px; align-items: start; }
.calc-inputs { display: grid; gap: 2px; min-width: 0; }
.calc-results { background: rgba(127, 127, 127, 0.045); border: 1px solid rgba(127, 127, 127, 0.18); border-radius: 22px; padding: 22px; min-width: 0; }
.calc-results-label { font-family: var(--font-display); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mist); margin-bottom: 14px; }
.calc-results .grid4 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.calc-results .stat { min-width: 0; }
.calc-results .stat .num { font-size: clamp(1.15rem, 2.5vw + 0.9rem, 1.9rem); overflow-wrap: anywhere; }
.stat { min-width: 0; }
.stat .num { overflow-wrap: anywhere; }
.calc-card img { order: -1; width: 100% !important; margin: 0 !important; border: none !important; border-bottom: 1px solid var(--line) !important; border-radius: 0 !important; aspect-ratio: auto !important; }
@media (max-width: 900px) { .calc-grid { grid-template-columns: 1fr; } }
.load-more { display: none; margin: 18px auto 0; }
.incident-track { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; margin: 1.4em 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--card); }
.incident-step { position: relative; min-height: 130px; padding: 16px 14px; border-right: 1px solid var(--line); }
.incident-step:last-child { border-right: 0; }
.incident-step::after { content: ">"; position: absolute; right: -7px; top: 54px; z-index: 2; width: 14px; height: 14px; color: var(--cyan); background: var(--card); font-family: var(--font-mono); font-size: 0.75rem; text-align: center; line-height: 14px; }
.incident-step:last-child::after { display: none; }
.incident-step .step-no { color: var(--cyan); font-family: var(--font-mono); font-size: 0.68rem; font-weight: 700; }
.incident-step strong { display: block; margin-top: 11px; color: var(--heading); font-family: var(--font-display); font-size: 0.78rem; line-height: 1.35; }
.incident-step small { display: block; margin-top: 7px; color: var(--mist); font-family: var(--font-body); font-size: 0.7rem; line-height: 1.5; }

/* Animated architecture figure used by long-form case studies. It is kept
   dependency-free so it still works on GitHub Pages and on slow connections. */
.live-diagram {
  position: relative;
  margin: 1.4em 0;
  padding: 24px 18px 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(135deg, var(--card), var(--card-muted));
  font-family: var(--font-mono);
}
.live-diagram::before {
  content: "LIVE REQUEST PATH  /  COST SURFACE";
  display: block;
  margin-bottom: 18px;
  color: var(--cyan);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}
.live-diagram-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; position: relative; }
.diagram-node {
  position: relative;
  min-height: 82px;
  padding: 13px 11px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
}
.diagram-node small { display: block; margin-top: 7px; color: var(--mist); font-family: var(--font-mono); font-size: 0.64rem; font-weight: 400; line-height: 1.45; }
.diagram-node.hot { border-top-color: var(--hot); }
.diagram-node.gold { border-top-color: var(--gold); }
.diagram-node.green { border-top-color: var(--lime); }
.diagram-arrow { display: flex; align-items: center; justify-content: center; color: var(--cyan); font-size: 1.15rem; }
.diagram-flow { position: absolute; left: 4%; right: 4%; top: 91px; height: 2px; pointer-events: none; background: repeating-linear-gradient(90deg, var(--cyan) 0 8px, transparent 8px 15px); opacity: 0.75; animation: data-flow 1.3s linear infinite; }
.diagram-caption { margin: 18px 0 0; color: var(--mist); font-size: 0.72rem; line-height: 1.6; text-align: center; }
@keyframes data-flow { to { background-position: 30px 0; } }
.tip {
  margin: 1.25em 0;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--cyan) 25%, var(--line));
  border-radius: 12px;
  background: color-mix(in srgb, var(--cyan) 6%, var(--card));
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.7;
}
.tip strong { color: var(--cyan); }

.codeblock, .prose pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--paper);
}
.prose pre { margin: 1.2em 0; }
.prose code { font-family: var(--font-mono); font-size: 0.82em; background: var(--card-muted); padding: 2px 5px; border-radius: 5px; color: var(--hot); }
.prose pre code { background: transparent; padding: 0; color: inherit; }

/* Rook's research-desk treatment stays inside the article content. */
.rook-article {
  --rook-ink: #171412;
  --rook-paper: #fbf7ef;
  --rook-line: #d8c9b3;
  --rook-accent: #8f2d2d;
  --rook-evidence: #d8a83e;
  background: var(--rook-paper);
  color: var(--rook-ink);
  width: 100%;
  max-width: none;
}
.rook-article > div {
  padding: 22px 28px 30px;
  border-top: 5px solid var(--rook-accent);
  background: var(--rook-paper);
  color: var(--rook-ink);
  box-shadow: none;
}
.rook-article > div > p:first-child a { color: var(--rook-accent); }
.rook-article .page-lede,
.rook-article header p { color: color-mix(in srgb, var(--rook-ink) 72%, transparent) !important; }
.rook-article .page-title,
.rook-article .prose h2,
.rook-article .prose h3,
.rook-article .prose h4 { color: var(--rook-accent); }
.rook-article .prose { color: var(--rook-ink); }
.rook-article .prose strong { color: var(--rook-ink); }
.rook-article .prose h2 { border-left: 4px solid var(--rook-evidence); padding-left: 12px; }
.rook-article .fl-tag { color: var(--rook-accent); border-color: color-mix(in srgb, var(--rook-accent) 35%, var(--rook-line)); background: color-mix(in srgb, var(--rook-accent) 9%, transparent); }
.rook-article .chip { color: var(--rook-ink); border-color: var(--rook-line); background: #f1e8d8; }
.rook-article .stat { color: var(--rook-ink); border-color: var(--rook-line); background: #f5ecdf; box-shadow: none; }
.rook-article .stat div { color: var(--rook-ink) !important; }
.rook-article .tip { border-color: color-mix(in srgb, var(--rook-accent) 35%, var(--rook-line)); background: #f4eadb; color: var(--rook-ink); }
.rook-article .tip strong { color: var(--rook-accent); }
.rook-article .callout { border-left-color: var(--rook-accent); background: #f4e6d2; color: var(--rook-ink); }
.rook-article .callout strong { color: var(--rook-accent); }
.rook-article .article-figure { border-color: var(--rook-line); }
.rook-article .prose pre { border-color: var(--rook-line); background: #efe5d4; color: var(--rook-ink); }
.rook-article .prose a { color: var(--rook-accent); }
.rook-article > div > footer { border-color: var(--rook-line) !important; }
:root.dark .rook-article {
  --rook-ink: #f3eadc;
  --rook-paper: #211b19;
  --rook-line: #604c40;
  --rook-accent: #f08a72;
  --rook-evidence: #e6bd62;
}
:root.dark .rook-article { background: var(--rook-paper); }
:root.dark .rook-article .chip,
:root.dark .rook-article .stat,
:root.dark .rook-article .tip,
:root.dark .rook-article .callout,
:root.dark .rook-article .prose pre { background: #2b211e; color: var(--rook-ink); }

.chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--card-muted);
  border: 1px solid var(--line);
  color: var(--paper);
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 3.5rem;
  padding: 1.4rem 0 2.2rem;
  border-top: 1px solid var(--line);
  color: var(--mist);
  font-size: 0.78rem;
  font-family: var(--font-mono);
}
.footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.footer a { color: var(--mist); }
.footer a:hover { color: var(--lime); }

/* ---------- Popup ---------- */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 12, 24, 0.85);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 60;
}
.popup-overlay.open { display: flex; animation: fade 0.2s ease; }
.popup-box {
  position: relative;
  max-width: 920px;
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px;
}
.popup-box img { border-radius: 10px; max-height: 82vh; width: auto; margin: 0 auto; }
.popup-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: none;
  background: var(--card-muted);
  color: var(--mist);
  cursor: pointer;
  display: grid;
  place-items: center;
}
.popup-close:hover { color: var(--hot); }

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

/* ---------- Profile hero ---------- */
.profile-hero {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}
.profile-hero-media { position: relative; flex-shrink: 0; }
.profile-hero-media img {
  width: 140px;
  height: 140px;
  border-radius: 18px;
  object-fit: cover;
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
}
.profile-hero-copy { flex: 1; min-width: 280px; }
.profile-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 20px;
}
.profile-hero-actions .iconbtn-row { display: flex; gap: 10px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid4 { grid-template-columns: repeat(2, 1fr); }
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .grid2 { grid-template-columns: 1fr; }
  .prose { max-width: none; }
  .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .profile-hero {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 22px;
  }
  .profile-hero-media img { width: 168px; height: 168px; }
  .profile-hero-copy { min-width: 0; width: 100%; }
  .profile-hero-copy .page-title,
  .profile-hero-copy .page-lede { margin-left: auto; margin-right: auto; }
  .profile-hero-copy .page-lede { max-width: 36rem; }
  .profile-hero-actions { justify-content: center; }
  .profile-hero-copy > div:first-child { justify-content: center; }
}
@media (max-width: 760px) {
  .topbar > .wrap { flex-wrap: nowrap; height: 60px; padding-top: 0; padding-bottom: 0; row-gap: 0; }
  .topnav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-left: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    padding: 10px 16px 14px;
    box-shadow: var(--shadow);
    z-index: 50;
  }
  .topnav.open { display: flex; }
  .topnav a { padding: 11px 12px; font-size: 0.9rem; }
  #navToggle { display: inline-flex; }
  .topbar-actions { margin-left: auto; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .grid4, .grid3 { grid-template-columns: 1fr; }
  .brand { font-size: 1rem; }
  .sec-head { flex-direction: column; align-items: flex-start; }
  .sec-head .field-input { max-width: 100% !important; }
  .article-grid { grid-template-columns: 1fr; }
  .incident-track { grid-template-columns: 1fr; }
  .incident-step { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .incident-step:last-child { border-bottom: 0; }
  .incident-step::after { content: "↓"; right: auto; left: 50%; top: auto; bottom: -7px; }
  .live-diagram-grid { grid-template-columns: 1fr 1fr; }
  .diagram-flow { display: none; }
  .diagram-arrow { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}