/* Black Magic dev journal. Shares the design tokens of mattbreckenridge.com.
   Articles switch to an editorial reading register: serif body, tighter measure,
   real headings. Chrome (nav, labels, captions, stats, figures) stays in the
   site's mono/sans dashboard voice. Chess motifs run through both. */
:root {
  --bg: #080A10;
  --surface: #0E1118;
  --surface-2: #141820;
  --border: #1E2438;
  --border-2: #28304A;
  --text: #DDE0EC;
  --text-2: #727796;
  --text-3: #424660;
  --ink: #CBD0E0;
  --gold: #C49A0C;
  --gold-lt: #E8B620;
  --gold-dim: rgba(196,154,12,0.11);
  --gold-rim: rgba(196,154,12,0.28);
  --green: #2D9966;
  --green-dim: rgba(45,153,102,0.11);
  --green-rim: rgba(45,153,102,0.30);
  --cta-bg: #C49A0C;
  --cta-bg-hover: #E8B620;
  --cta-text: #0A0800;
  --r: 10px;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'DM Sans', sans-serif;
  --serif: 'Newsreader', Georgia, serif;
}
:root[data-theme="light"] {
  --bg: #F6F5F1;
  --surface: #FFFFFF;
  --surface-2: #EFEDE6;
  --border: #E0DDD2;
  --border-2: #CCC8B8;
  --text: #1C1F2E;
  --text-2: #5B5F77;
  --text-3: #8F92A6;
  --ink: #23283B;
  --gold: #9C7A08;
  --gold-lt: #7E6206;
  --gold-dim: rgba(156,122,8,0.10);
  --gold-rim: rgba(156,122,8,0.38);
  --green: #1E7A4E;
  --green-dim: rgba(30,122,78,0.10);
  --green-rim: rgba(30,122,78,0.35);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.page { max-width: 900px; margin: 0 auto; padding: 28px 24px 100px; }
a { color: inherit; }

/* ---- Reading progress ---- */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: var(--gold);
  z-index: 60;
}

/* ---- Top nav ---- */
.topnav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 48px; }
.topnav-links { display: flex; gap: 10px; flex-wrap: wrap; }
.nav-link {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 14px;
  transition: border-color 0.15s, color 0.15s;
  cursor: pointer;
}
.nav-link:hover { border-color: var(--gold-rim); color: var(--gold-lt); }

/* ---- Section labels (index chrome) ---- */
.slabel {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-3);
  margin-bottom: 18px;
}
.slabel::before { content: "// "; color: var(--gold); }

/* ---- Journal header ---- */
.jhead { padding: 8px 0 56px; position: relative; }
.jhead > * { position: relative; z-index: 2; }
.jhead::after {
  content: "♞";
  position: absolute;
  top: -60px;
  right: -10px;
  font-size: 240px;
  line-height: 1;
  color: var(--gold);
  opacity: 0.06;
  pointer-events: none;
  z-index: 1;
}
.jhead-kicker {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 14px;
}
.jhead h1 { font-size: 40px; font-weight: 700; line-height: 1.12; letter-spacing: -0.01em; margin-bottom: 16px; }
.jhead-sub { font-size: 16.5px; line-height: 1.7; color: var(--text-2); max-width: 640px; margin-bottom: 24px; }
.jhead-links { display: flex; gap: 10px; flex-wrap: wrap; }

/* Eight alternating squares, a rank of the board. */
.board-strip {
  width: 112px;
  height: 14px;
  border: 1px solid var(--gold-rim);
  background: repeating-conic-gradient(var(--gold-rim) 0% 25%, transparent 0% 50%) 0 0 / 28px 28px;
  margin: 4px 0 20px;
}

/* ---- Milestone strip ---- */
.miles { padding-bottom: 64px; }
.mile-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px 16px;
}
.mile-id { font-family: var(--mono); font-size: 11px; color: var(--text-3); margin-bottom: 6px; }
.mile-name { font-family: var(--mono); font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.mile-state {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 20px;
  padding: 2px 10px;
  white-space: nowrap;
  display: inline-block;
}
.mile-state.done { color: var(--green); background: var(--green-dim); border: 1px solid var(--green-rim); }
.mile-state.done::before { content: "✓ "; }
.mile-state.active { color: var(--gold-lt); background: var(--gold-dim); border: 1px solid var(--gold-rim); }
.mile-state.active::before { content: "◌ "; }
.mile-state.next { color: var(--text-3); background: var(--surface-2); border: 1px solid var(--border-2); }
.mile-state.next::before { content: "· "; }

/* ---- Episode cards ---- */
.epcards { display: grid; grid-template-columns: 1fr; gap: 16px; }
.epcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 26px 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 32px;
  align-items: start;
  transition: border-color 0.15s;
}
.epcard:hover { border-color: var(--gold-rim); }
.epcard-top { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.epcard h3 { font-family: var(--mono); font-size: 17px; font-weight: 600; letter-spacing: 0.01em; }
.ep-num { font-family: var(--mono); font-size: 11px; color: var(--gold); }
.ep-num::before { content: "♟ "; font-size: 12px; }
.ep-date { font-family: var(--mono); font-size: 11px; color: var(--text-3); }
.epcard p { color: var(--text-2); font-size: 14.5px; line-height: 1.7; }
.cta-btn {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--cta-text);
  background: var(--cta-bg);
  border: none;
  border-radius: 7px;
  padding: 11px 20px;
  text-decoration: none;
  white-space: nowrap;
  align-self: center;
  transition: background 0.15s;
}
.cta-btn:hover { background: var(--cta-bg-hover); }

/* ---- Episode article: the reading register ---- */
.ep-meta { font-family: var(--mono); font-size: 11px; color: var(--text-3); margin-bottom: 14px; }
.ep-meta .sep { color: var(--border-2); margin: 0 6px; }

article.prose section { margin-bottom: 20px; }
article.prose section + section::before {
  content: "";
  display: block;
  width: 84px;
  height: 12px;
  margin: 44px 0;
  border: 1px solid var(--border);
  background: repeating-conic-gradient(var(--border) 0% 25%, transparent 0% 50%) 0 0 / 28px 28px;
  opacity: 0.75;
}
article.prose h2 {
  font-family: var(--sans);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  max-width: 640px;
  margin-bottom: 16px;
  scroll-margin-top: 32px;
}
article.prose h2 .pc {
  color: var(--gold);
  font-size: 19px;
  font-weight: 400;
  margin-right: 8px;
  vertical-align: 1px;
}
article.prose p,
article.prose ul {
  font-family: var(--serif);
  font-size: 17.5px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 640px;
}
article.prose p + p { margin-top: 16px; }
article.prose strong { color: var(--text); font-weight: 600; }
article.prose a { color: var(--gold-lt); text-decoration: none; }
article.prose a:hover { text-decoration: underline; }
article.prose ul { margin: 16px 0 0 22px; }
article.prose li { margin-bottom: 10px; }
article.prose li::marker { color: var(--gold); }

/* Lead paragraph with a chess-square drop cap. */
article.prose .lede { font-size: 20px; line-height: 1.7; }
article.prose .lede::first-letter {
  font-family: var(--serif);
  font-size: 50px;
  line-height: 1;
  font-weight: 500;
  color: var(--text);
  float: left;
  padding: 10px 14px;
  margin: 5px 14px 0 0;
  border: 1px solid var(--gold-rim);
  border-radius: 6px;
  background: repeating-conic-gradient(var(--gold-dim) 0% 25%, transparent 0% 50%) 0 0 / 35px 35px;
}

/* Pull quote, crowned. */
article.prose blockquote.pull {
  max-width: 560px;
  margin: 40px auto;
  text-align: center;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 24px;
  line-height: 1.5;
  color: var(--text);
}
article.prose blockquote.pull::before {
  content: "♛";
  display: block;
  font-style: normal;
  font-size: 20px;
  color: var(--gold);
  margin-bottom: 12px;
}

/* ---- Table of contents (wide screens) ---- */
.toc {
  display: none;
  position: fixed;
  top: 140px;
  right: max(24px, calc((100vw - 900px) / 2 - 236px));
  width: 200px;
  z-index: 40;
}
@media (min-width: 1360px) { .toc { display: block; } }
.toc-title {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-3);
  margin-bottom: 12px;
}
.toc-title::before { content: "♜ "; color: var(--gold); }
.toc a {
  display: block;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-3);
  text-decoration: none;
  padding: 5px 0 5px 12px;
  border-left: 2px solid var(--border);
  transition: color 0.15s, border-color 0.15s;
}
.toc a:hover { color: var(--text-2); }
.toc a.active { color: var(--gold-lt); border-left-color: var(--gold); }

/* ---- Figures: instrument chrome ---- */
.figure {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 22px;
  margin: 26px 0 0;
  max-width: 860px;
  position: relative;
}
.figure::before {
  content: "FIG";
  position: absolute;
  top: -9px;
  left: 18px;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--gold);
  background: var(--bg);
  padding: 2px 8px;
  border: 1px solid var(--gold-rim);
  border-radius: 4px;
}
.figure svg { display: block; width: 100%; height: auto; }
.figcap { font-family: var(--mono); font-size: 11px; color: var(--text-3); margin-top: 14px; line-height: 1.6; }
.figcap a { color: var(--text-2); }
.figcap a:hover { color: var(--gold-lt); }

/* The raw artifact keeps its own dark chrome in both themes. */
.artifact-frame {
  background: #0d1117;
  border: 1px solid var(--border-2);
  border-radius: var(--r);
  margin: 26px 0 0;
  overflow-x: auto;
  max-width: 860px;
}
.artifact-frame img { display: block; width: 1294px; max-width: none; height: auto; }
@media (min-width: 920px) { .artifact-frame img { width: 100%; min-width: 816px; } }

/* ---- Stat tiles ---- */
.statrow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 26px; max-width: 860px; }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 16px 18px;
}
.stat-num { font-family: var(--mono); font-size: 24px; font-weight: 600; color: var(--text); line-height: 1.2; }
.stat-num .dim { color: var(--text-3); font-size: 15px; }
.stat-label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  margin-top: 8px;
  line-height: 1.5;
}

/* ---- Prev / next episode cards ---- */
.ep-nav-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 56px;
  max-width: 860px;
}
.ep-nav-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
  text-decoration: none;
  transition: border-color 0.15s;
}
.ep-nav-card:hover { border-color: var(--gold-rim); }
.ep-nav-card.is-next { text-align: right; }
.ep-nav-kicker {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-3);
  margin-bottom: 6px;
}
.ep-nav-title { font-family: var(--mono); font-size: 13.5px; font-weight: 600; color: var(--text); line-height: 1.45; }
.ep-nav-card:hover .ep-nav-title { color: var(--gold-lt); }
.ep-nav-card.is-index { text-align: center; }

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  margin-top: 72px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-3);
}
footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--gold-lt); }
.footer-links { display: flex; gap: 22px; }

@media (max-width: 720px) {
  .jhead h1 { font-size: 31px; }
  .jhead::after { font-size: 150px; top: -30px; opacity: 0.05; }
  .mile-row { grid-template-columns: 1fr; }
  .statrow { grid-template-columns: repeat(2, 1fr); }
  .epcard { grid-template-columns: 1fr; }
  .epcard .cta-btn { justify-self: start; margin-top: 12px; }
  article.prose h2 { font-size: 21px; }
  article.prose p, article.prose ul { font-size: 16.5px; }
  article.prose .lede { font-size: 18px; }
  article.prose blockquote.pull { font-size: 20.5px; }
  .ep-nav-cards { grid-template-columns: 1fr; }
  .ep-nav-card.is-next { text-align: left; }
}