/* alckasoc.github.io — editorial documentation style */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=JetBrains+Mono:wght@400;500&family=Inter+Tight:wght@400;500;600&display=swap');

:root {
  --bg: #fbfaf7;
  --bg-elev: #ffffff;
  --ink: #1a1815;
  --ink-soft: #4a4642;
  --ink-faint: #8a847d;
  --rule: #e8e3dc;
  --accent: #b8442e;
  --accent-soft: #f4e8e3;
  --code-bg: #f3efe8;
  --shadow: 0 1px 0 rgba(26, 24, 21, 0.04), 0 8px 24px rgba(26, 24, 21, 0.04);
  --serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --sans: 'Inter Tight', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --maxw: 760px;
  --toc-w: 240px;
}

[data-theme="dark"] {
  --bg: #14130f;
  --bg-elev: #1c1a16;
  --ink: #f0ece4;
  --ink-soft: #c4bdb1;
  --ink-faint: #807a6f;
  --rule: #2a2620;
  --accent: #e07a5f;
  --accent-soft: #2a1f1a;
  --code-bg: #232019;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Layout --- */

.layout {
  display: grid;
  grid-template-columns: var(--toc-w) minmax(0, var(--maxw)) 1fr;
  gap: 64px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 56px 48px 120px;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 24px 80px;
  }
  .toc { position: static !important; max-height: none !important; }
}

/* --- Sidebar / TOC --- */

.toc {
  position: sticky;
  top: 32px;
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.5;
  padding-right: 16px;
  border-right: 1px solid var(--rule);
}

.toc-brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  color: var(--ink);
  text-decoration: none;
  display: block;
}

.toc-brand-sub {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 24px;
}

.toc nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc nav > ul > li {
  margin-bottom: 12px;
}

.toc nav a {
  color: var(--ink-soft);
  text-decoration: none;
  display: block;
  padding: 3px 0;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -12px;
  transition: color 0.15s, border-color 0.15s;
}

.toc nav a:hover {
  color: var(--ink);
  border-left-color: var(--accent);
}

.toc nav .toc-h1 {
  font-weight: 600;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 14px;
  margin-top: 18px;
}

.toc nav .toc-h2 {
  padding-left: 22px;
  font-size: 12.5px;
}

/* --- Main column --- */

main {
  min-width: 0;
  max-width: var(--maxw);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 16px;
}

h1.page-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 48px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--rule);
}

/* --- TL;DR --- */

.tldr {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 28px 32px;
  margin-bottom: 56px;
  box-shadow: var(--shadow);
}

.tldr h2 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  margin: 0 0 16px;
  font-weight: 500;
}

.tldr h3 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  margin: 18px 0 6px;
  color: var(--ink);
}

.tldr h3:first-of-type { margin-top: 0; }

.tldr p, .tldr ul {
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 15px;
}

/* --- Body headings --- */

main h1 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 72px 0 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
}

main h1::before {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 16px;
}

main h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  margin: 48px 0 8px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

main h2 a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.15s;
}

main h2 a:hover {
  border-bottom-color: var(--accent);
}

main h2 a::after {
  content: " ↗";
  font-size: 0.7em;
  color: var(--ink-faint);
  font-family: var(--sans);
}

main h3 {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 32px 0 12px;
}

/* --- Paper meta strip --- */

.paper-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin: 4px 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.paper-meta span::before {
  content: "·";
  margin-right: 16px;
  color: var(--rule);
}

.paper-meta span:first-child::before { content: ""; margin: 0; }

/* --- Body text --- */

main p {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

main ul, main ol {
  padding-left: 24px;
  margin: 0 0 16px;
  color: var(--ink-soft);
}

main li {
  margin-bottom: 6px;
}

main li::marker {
  color: var(--ink-faint);
}

main strong {
  color: var(--ink);
  font-weight: 600;
}

main a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color 0.15s;
}

main a:hover {
  border-bottom-color: var(--accent);
}

/* --- Figures --- */

figure {
  margin: 24px 0;
  padding: 16px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 4px;
}

figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

figcaption {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-faint);
  margin-top: 10px;
  line-height: 1.5;
  text-align: center;
}

/* --- Code --- */

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ink);
}

pre {
  background: var(--code-bg);
  padding: 16px 18px;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.55;
  margin: 16px 0;
  border: 1px solid var(--rule);
}

pre code {
  background: none;
  padding: 0;
}

/* --- Tables --- */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 20px 0;
  font-family: var(--mono);
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
}

th {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
}

/* --- Blockquote / callout --- */

blockquote {
  margin: 20px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  font-style: italic;
  font-family: var(--serif);
  font-size: 17px;
}

/* --- Theme toggle --- */

.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  width: 36px;
  height: 36px;
  border-radius: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: var(--shadow);
  transition: transform 0.15s;
  z-index: 100;
}

.theme-toggle:hover { transform: scale(1.06); }

/* --- Index page specific --- */

.index-header {
  margin-bottom: 64px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--rule);
}

.index-header h1 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1;
  margin: 0 0 16px;
}

.index-header .lede {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 580px;
  line-height: 1.55;
}

.review-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.review-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  align-items: baseline;
}

.review-item .date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.review-item h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.review-item h2 a {
  color: var(--ink);
  text-decoration: none;
}

.review-item h2 a:hover {
  color: var(--accent);
}

.review-item p {
  color: var(--ink-soft);
  font-size: 15px;
  margin: 0;
}

.empty-state {
  padding: 80px 0;
  text-align: center;
  color: var(--ink-faint);
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
}