/*
 * marcuss.pro — shared theme
 * ──────────────────────────
 * Owns:
 *   - design tokens (color, type, easing)
 *   - article chrome (topbar, theme-toggle, article-head, prose, tldr, tbl,
 *     code-block, chart-card, foot, callout, tag-pill, section-rule, wrap)
 *
 * Does NOT own:
 *   - index.html's section/layout/widget CSS (matrix rain, hero, ask-terminal,
 *     trace panel, etc.) — those stay inline in index.html.
 *   - Per-article unique styling — that stays inline per-article.
 *
 * Toggle: html[data-mode="fun"|"formal"] (ADR 0003)
 * Persist: localStorage("marcuss-theme")
 */

/* ── DESIGN TOKENS ─────────────────────────────────────────────────────── *
 * FUN palette mirrors index.html (line ~123): phosphor green accent on a
 * green-tinted dark background. Keep these in sync — if the home page's
 * FUN block changes, this one should too. */
:root,
html[data-mode="fun"] {
  --accent:    #00d68f;          /* phosphor green */
  --accent-2:  #5fb88a;
  --bg:        #050a07;
  --bg-2:      #0a120d;
  --fg:        #d8ffe6;
  --fg-strong: #f5fff0;
  --fg-dim:    #7eb59a;
  --fg-mute:   #4a6b5a;
  --grid:      #14241c;
  --rule:      rgba(0,214,143,.22);
  --hot:       #ff4365;
  --ok:        #00d68f;
  --warn:      #ffd166;

  --mono:  "JetBrains Mono", "Geist Mono", ui-monospace, SFMono-Regular, monospace;
  --serif: "Newsreader", Georgia, serif;
  --tx:    cubic-bezier(.2,.7,.2,1);

  --glow:        0 0 12px var(--accent), 0 0 28px color-mix(in oklab, var(--accent) 40%, transparent);
  --card-shadow: 0 0 40px color-mix(in oklab, var(--accent) 8%, transparent), inset 0 0 80px color-mix(in oklab, var(--accent) 3%, transparent);
  --link:           var(--accent);
  --link-underline: color-mix(in oklab, var(--accent) 40%, transparent);
  --chart-grid:     color-mix(in oklab, var(--accent) 8%, transparent);
}

html[data-mode="formal"] {
  /* Matches the index.html formal block (line ~895) so home and articles
     resolve to identical FORMAL palettes. Keep in sync — if either file's
     values diverge, the home page and articles will look slightly different
     in formal mode. */
  --accent:    #1c2a4a;             /* navy */
  --accent-2:  #6b1f2a;             /* claret/burgundy */
  --bg:        #f5f1ea;
  --bg-2:      #faf7f0;
  --fg:        #1a1a1a;
  --fg-strong: #0a0a0a;
  --fg-dim:    #57534e;
  --fg-mute:   #8a857c;
  --grid:      rgba(26,26,26,.16);
  --rule:      rgba(28,42,74,.2);
  --hot:       #b1372f;
  --ok:        #1c5a3a;
  --warn:      #b07e2d;

  --glow:        none;
  --card-shadow: 0 1px 0 rgba(26,26,26,.08), 0 8px 24px rgba(26,26,26,.06);
  --link:           var(--accent-2);
  --link-underline: rgba(107,31,42,.4);
  --chart-grid:     rgba(26,26,26,.08);
}

/* ── ARTICLE PAGE CHROME ───────────────────────────────────────────────── *
 * These classes are scoped to article-style pages. They don't conflict
 * with index.html because the home page never applies these class names.
 * The base article body styles are scoped via body.article-body so they
 * never leak into the home page's mono-default body.
 */

body.article-body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font-family: var(--serif); font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background .2s ease, color .2s ease;
}
body.article-body a { color: var(--link); text-decoration: none; }
body.article-body a:hover {
  text-decoration: underline; text-underline-offset: 3px;
  text-decoration-color: var(--link-underline);
}

/* Layout primitives */
.wrap      { max-width: 920px;  margin: 0 auto; padding: 0 32px; }
.wrap-wide { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px; max-width: 1200px; margin: 0 auto;
  font-family: var(--mono); font-size: 12px; color: var(--fg-dim);
}
.topbar .back { color: var(--fg-dim); display: flex; align-items: center; gap: 8px; }
.topbar .back:hover { color: var(--accent); text-decoration: none; }
.topbar .pubinfo { display: flex; gap: 16px; align-items: center; }
.topbar .pubinfo .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
  animation: tb-pulse 2s ease-in-out infinite;
}
html[data-mode="formal"] .topbar .pubinfo .dot { box-shadow: none; }
@keyframes tb-pulse { 50% { opacity: .35; } }
.topbar .pubinfo .lbl { color: var(--accent); letter-spacing: .04em; }

/* Theme toggle */
.theme-toggle {
  display: flex; border: 1px solid var(--grid); border-radius: 3px; overflow: hidden;
  font-family: var(--mono); font-size: 11px;
}
.theme-toggle button {
  appearance: none; background: transparent; border: 0;
  color: var(--fg-mute); font: inherit; font-size: 11px;
  padding: 5px 11px; cursor: pointer; letter-spacing: .08em;
  transition: color .15s, background .15s;
}
.theme-toggle button + button { border-left: 1px solid var(--grid); }
.theme-toggle button.on {
  color: var(--accent);
  background: color-mix(in oklab, var(--accent) 14%, transparent);
}
.theme-toggle button:not(.on):hover { color: var(--fg); }

/* CRT scanlines — fun only, articles only (home page has its own treatment) */
html[data-mode="fun"] body.article-body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 100;
  background: repeating-linear-gradient(to bottom, transparent 0, transparent 2px,
    color-mix(in oklab, var(--accent) 4%, transparent) 2px,
    color-mix(in oklab, var(--accent) 4%, transparent) 3px);
}

/* Article header */
.article-head { padding: 60px 0 32px; border-bottom: 1px solid var(--grid); }
.kicker {
  font-family: var(--mono); font-size: 11px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--accent);
  display: flex; gap: 14px; align-items: center;
  margin-bottom: 24px;
}
.kicker .rule { flex: 1; height: 1px; background: var(--grid); }
.article-head h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05; letter-spacing: -.02em; margin: 0;
  max-width: 820px;
}
.article-head h1 .italic { font-style: italic; color: var(--accent); }
.article-head h1 .accent { color: var(--accent); }
.article-head .deck {
  font-family: var(--serif); font-style: italic; font-weight: 300;
  font-size: 22px; line-height: 1.4; color: var(--fg-dim);
  max-width: 720px; margin: 22px 0 0;
}
.article-meta {
  margin-top: 36px; display: flex; gap: 28px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; color: var(--fg-mute);
  letter-spacing: .04em;
}
.article-meta b { color: var(--fg-dim); font-weight: 400; display: block; margin-top: 4px; font-size: 12px; }
.article-meta b.accent { color: var(--accent); }

/* Prose */
.prose { padding: 40px 0 24px; font-family: var(--serif); }
.prose p, .prose ul, .prose ol {
  font-family: var(--serif); font-size: 18px; line-height: 1.7;
  color: var(--fg); max-width: 700px; margin: 0 0 22px;
}
html[data-mode="fun"] .prose p,
html[data-mode="fun"] .prose ul,
html[data-mode="fun"] .prose ol { color: #d8d8de; }
.prose p .acc, .prose .acc { color: var(--accent); font-family: var(--mono); font-size: 13px; }
.prose strong { color: var(--fg-strong); font-weight: 500; }
.prose em { color: var(--accent); font-style: italic; }
.prose code {
  font-family: var(--mono); font-size: .9em;
  background: var(--bg-2); padding: 1px 6px; border-radius: 3px;
  border: 1px solid var(--grid); color: var(--accent-2);
}
.prose a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: var(--link-underline);
  text-underline-offset: 3px;
}
.prose a:hover { text-decoration-color: var(--link); }
.prose h2 {
  font-family: var(--serif); font-weight: 400; font-size: 32px;
  letter-spacing: -.01em; margin: 48px 0 16px;
  display: flex; align-items: baseline; gap: 14px;
  color: var(--fg-strong);
}
.prose h2 .num {
  font-family: var(--mono); font-size: 13px; color: var(--accent);
  letter-spacing: .14em;
}
.prose h3 {
  font-family: var(--serif); font-weight: 500; font-size: 22px;
  margin: 32px 0 10px; color: var(--fg);
}
.prose .lede {
  font-size: 22px; line-height: 1.55; font-style: italic; font-weight: 300;
  color: var(--fg); max-width: 720px;
}
html[data-mode="fun"] .prose .lede { color: #d8d8de; }
.prose .lede::first-letter {
  font-family: var(--serif); font-size: 64px; line-height: 1; float: left;
  padding-right: 10px; padding-top: 6px; color: var(--accent); font-style: normal;
}
.callout {
  margin: 28px 0; padding: 18px 22px;
  border-left: 2px solid var(--accent); background: var(--bg-2);
  font-family: var(--mono); font-size: 13px; line-height: 1.6; color: var(--fg-dim);
  max-width: 700px;
}
.callout b { color: var(--accent); font-weight: 500; }

/* TL;DR / pull-quote */
.tldr {
  margin: 24px 0; padding: 22px 26px; max-width: 760px;
  border: 1px solid var(--grid); background: var(--bg-2);
  position: relative; display: grid; grid-template-columns: 80px 1fr; gap: 20px;
  align-items: start;
}
.tldr .badge {
  font-family: var(--mono); font-size: 11px; letter-spacing: .16em;
  color: var(--accent); padding-top: 4px;
}
.tldr p { margin: 0; font-family: var(--serif); font-size: 17px; line-height: 1.55; color: var(--fg); max-width: none; }

/* Numbers table */
.tbl {
  width: 100%; max-width: 760px;
  border-collapse: collapse; margin: 22px 0;
  font-family: var(--mono); font-size: 13px;
}
.tbl thead th {
  text-align: left; padding: 10px 14px;
  font-size: 10.5px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--fg-mute); font-weight: 500;
  border-bottom: 1px solid var(--accent);
}
.tbl tbody td {
  padding: 10px 14px; color: var(--fg);
  border-bottom: 1px dotted var(--grid);
}
.tbl tbody td.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl tbody td.accent { color: var(--accent); }
.tbl tbody td.hot   { color: var(--hot); }
.tbl tbody tr:hover td { background: var(--bg-2); }
.tbl .total td { border-top: 1px solid var(--accent); font-weight: 500; }

/* Code blocks */
.code-block {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
  background: var(--bg-2); border: 1px solid var(--grid);
  padding: 14px 18px; margin: 22px 0; max-width: 760px;
  color: var(--fg-dim); overflow-x: auto;
  white-space: pre;
}
.code-block .prompt { color: var(--accent); }
.code-block .hot    { color: var(--hot); }
.code-block .ok     { color: var(--ok); }
.code-block .accent { color: var(--accent); }
.code-block .header { color: var(--fg); font-weight: 500; }
.code-block .rule   { color: var(--accent); }

/* Section rule */
.section-rule { border: 0; border-top: 1px solid var(--grid); margin: 64px 0 0; }

/* Footer */
.foot {
  padding: 40px 0 60px; border-top: 1px dashed var(--grid); margin-top: 64px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  font-family: var(--mono); font-size: 11px; color: var(--fg-mute); letter-spacing: .04em;
}
.foot a { color: var(--fg-mute); }
.foot a:hover { color: var(--accent); }

/* Chart chrome */
.chart-card {
  margin: 32px 0; max-width: 1100px;
  background: var(--bg-2); border: 1px solid var(--grid);
  box-shadow: var(--card-shadow);
}
.chart-head {
  display: flex; align-items: baseline; gap: 16px;
  padding: 14px 20px; border-bottom: 1px solid var(--grid);
  font-family: var(--mono); font-size: 11px; color: var(--fg-mute);
  letter-spacing: .04em;
}
.chart-head .num { color: var(--accent); letter-spacing: .14em; }
.chart-head h3 {
  font-family: var(--serif); font-weight: 500; font-size: 18px;
  letter-spacing: -.005em; margin: 0; color: var(--fg);
}
.chart-head .right { margin-left: auto; }
.chart-body { padding: 20px 24px 26px; }
.chart-caption {
  font-family: var(--serif); font-style: italic; font-size: 14px;
  color: var(--fg-dim); padding: 0 20px 18px; max-width: 760px;
}

/* d3 axis / grid */
.d3-axis text { font-family: var(--mono); font-size: 11px; fill: var(--fg-mute); }
.d3-axis path,
.d3-axis line { stroke: var(--grid); }
.d3-grid line { stroke: var(--chart-grid); shape-rendering: crispEdges; }
.d3-grid path { stroke: none; }

/* Inline tag pill */
.tag-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em;
  padding: 3px 9px; border: 1px solid var(--grid); color: var(--fg-dim);
  border-radius: 999px; vertical-align: middle;
}
.tag-pill.accent { color: var(--accent); border-color: var(--accent); }
.tag-pill.warn   { color: var(--warn);   border-color: var(--warn); }
.tag-pill.hot    { color: var(--hot);    border-color: var(--hot); }