/*rr-house-style*//* The Carrollian Corpus — rajeshrmahapatra.com */
/* Design system: dark scholarly, high-contrast, print-adjacent typography */

:root {
  --bg: #0e0f13;
  --bg-alt: #15171e;
  --panel: #1a1d26;
  --panel-2: #20242f;
  --ink: #d8d5cc;
  --ink-dim: #9a978e;
  --ink-faint: #6b6960;
  --accent: #c09730;        /* octarine-gold */
  --accent-2: #936fa5;      /* violet */
  --accent-3: #2698a8;      /* teal */
  --rule: #2c303c;
  --red: #c15832;
  --blue: #4180c1;
  --green: #5b8d55;
  --yellow: #cea43c;
  --orange: #c49a31;
  --silver: #a8a8b8;
  --black-m: #555;
  --octarine: #9d7bad;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: 'Helvetica Neue', Arial, sans-serif;
  --mono: 'SF Mono', Consolas, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.75;
}

/* ---------- layout ---------- */

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

.wrap-wide {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- masthead ---------- */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--bg-alt);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 50;
}

.masthead .wrap-wide {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.masthead .site-name {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}

.masthead nav a {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  text-decoration: none;
  margin-left: 18px;
}

.masthead nav a:hover { color: var(--accent); }

/* ---------- chapter header ---------- */

.chapter-head {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(ellipse 60% 50% at 70% 0%, rgba(147,111,165,0.08), transparent),
    var(--bg);
}

.chapter-head .kicker {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}

.chapter-head h1 {
  font-size: 44px;
  line-height: 1.15;
  font-weight: 400;
  margin: 0 0 18px;
  color: #f7f4ee;
}

.chapter-head .dek {
  font-size: 20px;
  color: var(--ink-dim);
  font-style: italic;
  max-width: 700px;
  margin: 0;
}

.chapter-meta {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  margin-top: 22px;
}

/* ---------- article body ---------- */

article { padding: 48px 0 64px; }

article h2 {
  font-size: 30px;
  font-weight: 400;
  color: #e7e1cf;
  margin: 64px 0 20px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}

article h2:first-of-type { border-top: none; margin-top: 24px; }

article h3 {
  font-size: 22px;
  font-weight: 600;
  color: #e7e1cf;
  margin: 44px 0 14px;
}

article h4 {
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 36px 0 10px;
}

article p { margin: 0 0 20px; }

article a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(192,151,48,0.35); }
article a:hover { border-bottom-color: var(--accent); }

strong { color: #f7f4ee; }

/* first paragraph after h1 gets a drop cap on chapter pages */
.opening::first-letter {
  float: left;
  font-size: 64px;
  line-height: 0.85;
  padding: 6px 10px 0 0;
  color: var(--accent);
}

/* ---------- pull quotes & callouts ---------- */

blockquote {
  margin: 32px 0;
  padding: 4px 0 4px 26px;
  border-left: 2px solid var(--accent);
  font-style: italic;
  font-size: 19px;
  color: #c9c5ba;
}

blockquote cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.callout {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent-2);
  padding: 22px 26px;
  margin: 32px 0;
  font-size: 16.5px;
}

.callout .label {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-2);
  display: block;
  margin-bottom: 8px;
}

.callout.practice { border-left-color: var(--accent-3); }
.callout.practice .label { color: var(--accent-3); }
.callout.warning { border-left-color: var(--red); }
.callout.warning .label { color: var(--red); }

.keyterm {
  color: var(--accent);
  font-variant: small-caps;
  letter-spacing: 0.04em;
}

/* ---------- figures & diagrams ---------- */

figure {
  margin: 40px 0;
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: 28px;
  border-radius: 2px;
}

figure svg { display: block; width: 100%; height: auto; }

figcaption {
  margin-top: 16px;
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-dim);
  border-top: 1px solid var(--rule);
  padding-top: 12px;
}

figcaption .fignum {
  color: var(--accent);
  font-weight: bold;
  letter-spacing: 0.08em;
}

/* SVG text defaults — set as attributes in the SVG too */
.diagram text { font-family: 'Helvetica Neue', Arial, sans-serif; }

/* ---------- tables ---------- */

.tablewrap { overflow-x: auto; margin: 36px 0; }

table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.5;
  background: var(--panel);
}

caption {
  caption-side: top;
  text-align: left;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-dim);
  padding: 0 0 10px;
}

caption .fignum { color: var(--accent); font-weight: bold; }

th {
  background: var(--panel-2);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--rule);
}

td {
  padding: 11px 14px;
  border: 1px solid var(--rule);
  color: var(--ink);
  vertical-align: top;
}

tr:nth-child(even) td { background: rgba(255,255,255,0.015); }

td.hl { color: var(--accent); font-weight: 600; }

/* matrix tables: first column acts as row header */
table.matrix td:first-child, table.matrix th:first-child {
  background: var(--panel-2);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

/* color swatch cells for the eight magics */
.sw { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 8px; vertical-align: baseline; }

/* ---------- equation blocks ---------- */

.equation {
  font-family: var(--mono);
  font-size: 20px;
  text-align: center;
  color: #f7f4ee;
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: 26px 20px;
  margin: 36px 0;
  letter-spacing: 0.04em;
}

.equation .eq-note {
  display: block;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--ink-dim);
  margin-top: 14px;
  letter-spacing: 0.03em;
}

/* ---------- chapter nav ---------- */

.chapter-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--rule);
  padding: 36px 0 72px;
  font-family: var(--sans);
}

.chapter-nav a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 14px;
  max-width: 46%;
}

.chapter-nav a:hover { color: var(--accent); }

.chapter-nav .dir {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

.chapter-nav .next { text-align: right; margin-left: auto; }

/* ---------- in-page TOC ---------- */

.pagetoc {
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: 24px 28px;
  margin: 40px 0;
  font-family: var(--sans);
  font-size: 14px;
  columns: 2;
  column-gap: 40px;
}

.pagetoc .label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: block;
  margin-bottom: 12px;
  column-span: all;
}

.pagetoc a {
  display: block;
  color: var(--ink-dim);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: none;
}

.pagetoc a:hover { color: var(--accent); }

/* ---------- index page ---------- */

.hero {
  padding: 96px 0 64px;
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(ellipse 50% 60% at 30% 0%, rgba(192,151,48,0.07), transparent),
    radial-gradient(ellipse 40% 50% at 85% 20%, rgba(147,111,165,0.09), transparent),
    var(--bg);
}

.hero h1 {
  font-size: 54px;
  font-weight: 400;
  line-height: 1.1;
  margin: 0 0 20px;
  color: #f7f4ee;
}

.hero .dek { font-size: 21px; color: var(--ink-dim); font-style: italic; max-width: 720px; }

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
  margin: 48px 0;
}

.chapter-card {
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: 26px 28px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.chapter-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.chapter-card .num {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
}

.chapter-card h3 { font-size: 21px; font-weight: 400; margin: 10px 0 8px; color: #e7e1cf; }

.chapter-card p { font-size: 14.5px; color: var(--ink-dim); margin: 0; line-height: 1.6; font-family: var(--sans); }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 36px 0 48px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--ink-faint);
  background: var(--bg-alt);
}

.site-footer a { color: var(--ink-dim); text-decoration: none; }

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  body { font-size: 16.5px; }
  .chapter-head h1 { font-size: 32px; }
  .hero h1 { font-size: 36px; }
  .pagetoc { columns: 1; }
  figure { padding: 16px; }
  article h2 { font-size: 25px; }
}

@media print {
  body { background: #fff; color: #111; }
  .masthead, .chapter-nav { display: none; }
}