/* ============================================================
   LLUNATIC-LAB — noir editorial theme
   dark-first, warm-paper light mode, lime accent
   ============================================================ */

:root {
  --bg: #0a0a0c;
  --bg-soft: #101014;
  --surface: #141419;
  --ink: #ecebe4;
  --ink-dim: #a7a69d;
  --ink-faint: #6e6d66;
  --line: rgba(236, 235, 228, 0.09);
  --line-strong: rgba(236, 235, 228, 0.18);
  --acid: #bef264;
  --acid-ink: #0a0a0c;
  --card: #101014;
  --glow: rgba(190, 242, 100, 0.08);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 14px;
  --nav-h: 64px;
}

[data-theme="light"] {
  --bg: #f5f3ec;
  --bg-soft: #efece3;
  --surface: #fbfaf5;
  --ink: #181510;
  --ink-dim: #5d574a;
  --ink-faint: #98917f;
  --line: rgba(24, 21, 16, 0.1);
  --line-strong: rgba(24, 21, 16, 0.22);
  --acid: #4d7c0f;
  --acid-ink: #f5f3ec;
  --card: #fbfaf5;
  --glow: rgba(77, 124, 15, 0.07);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  transition: background 0.45s ease, color 0.45s ease;
  overflow-x: hidden;
}

/* film grain */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2000;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--acid); color: var(--acid-ink); }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 28px; }

.kicker {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 12px;
}
.kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--acid);
  display: inline-block;
}
.kicker .dot {
  width: 7px; height: 7px;
  background: var(--acid);
  display: inline-block;
  animation: blink 1.6s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0.15; } }

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 900;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 28px;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.06em;
}
.brand .cursor { color: var(--acid); animation: blink 1.1s steps(2) infinite; }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-actions { display: flex; gap: 10px; align-items: center; }

.icon-btn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}
.icon-btn:hover { border-color: var(--acid); transform: translateY(-1px); }
.icon-btn svg { width: 16px; height: 16px; }

/* ============ HERO ============ */
.hero {
  padding: calc(var(--nav-h) + 72px) 0 0;
  position: relative;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(2.9rem, 8.4vw, 7.2rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 26px 0 30px;
  max-width: 16ch;
}
.hero h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--acid);
}
.hero .lede {
  font-size: 18px;
  color: var(--ink-dim);
  max-width: 56ch;
}
.hero .lede strong { color: var(--ink); font-weight: 600; }
.hero-meta {
  display: flex; gap: 18px; flex-wrap: wrap;
  margin-top: 34px;
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint);
}
.hero-meta b { color: var(--acid); font-weight: 600; }

/* ticker */
.ticker {
  margin-top: 64px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  overflow: hidden;
  white-space: nowrap;
  padding: 13px 0;
  position: relative;
}
.ticker-track {
  display: inline-flex;
  gap: 0;
  animation: ticker 36s linear infinite;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-track span { padding: 0 28px; position: relative; }
.ticker-track span::after {
  content: "◆";
  position: absolute; right: -4px;
  color: var(--acid); font-size: 9px; top: 3px;
}
@keyframes ticker { to { transform: translateX(-50%); } }

/* ============ SECTION HEADS ============ */
.sec-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 20px;
  margin: 96px 0 8px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-strong);
}
.sec-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 560;
  letter-spacing: -0.02em;
}
.sec-head h2 .idx {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--acid);
  vertical-align: super;
  margin-right: 10px;
  letter-spacing: 0.1em;
}
.sec-head a.more {
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-faint);
  white-space: nowrap;
}
.sec-head a.more:hover { color: var(--acid); }

/* ============ ARTICLE INDEX (editorial rows) ============ */
.index-list { list-style: none; }
.index-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 26px;
  align-items: start;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding 0.3s ease;
}
.index-row:hover { padding-left: 10px; }
.index-row .num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-faint);
  padding-top: 8px;
}
.index-row h3 {
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(1.45rem, 2.8vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}
.index-row h3 a {
  background-image: linear-gradient(var(--acid), var(--acid));
  background-size: 0% 2px;
  background-repeat: no-repeat;
  background-position: left calc(100% - 2px);
  transition: background-size 0.4s cubic-bezier(0.65, 0, 0.35, 1);
  padding-bottom: 2px;
}
.index-row:hover h3 a { background-size: 100% 2px; }
.index-row .excerpt {
  color: var(--ink-dim);
  font-size: 15.5px;
  max-width: 62ch;
  margin-bottom: 14px;
}
.meta {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex; gap: 14px; flex-wrap: wrap; align-items: center;
}
.meta .tag {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px 12px;
  color: var(--ink-dim);
  transition: all 0.25s;
}
.meta .tag:hover { border-color: var(--acid); color: var(--acid); }
.index-row .thumb {
  width: 190px; height: 128px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  opacity: 0.85;
  transition: opacity 0.3s, transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.index-row:hover .thumb { opacity: 1; transform: scale(1.03) rotate(-1deg); }
.index-row .arrow {
  position: absolute; right: 4px; top: 40px;
  font-family: var(--mono); color: var(--acid);
  opacity: 0; transform: translateX(-8px);
  transition: all 0.3s ease;
  font-size: 20px;
}
.index-row:hover .arrow { opacity: 1; transform: translateX(0); }

/* ============ TOPIC CHIPS ============ */
.chips { display: flex; gap: 10px; flex-wrap: wrap; margin: 26px 0 6px; }
.chip {
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase;
  border: 1px solid var(--line-strong);
  padding: 8px 18px; border-radius: 999px;
  color: var(--ink-dim); cursor: pointer;
  background: transparent;
  transition: all 0.25s;
}
.chip:hover { border-color: var(--acid); color: var(--ink); }
.chip.active { background: var(--acid); border-color: var(--acid); color: var(--acid-ink); font-weight: 600; }

/* ============ ARTICLE PAGE ============ */
.progress {
  position: fixed; top: 0; left: 0; height: 2px;
  background: var(--acid);
  width: 0%;
  z-index: 1000;
}
.article-hero { padding: calc(var(--nav-h) + 56px) 0 0; }
.article-hero .cover {
  width: 100%; aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin: 34px 0 0;
}
.article-hero h1 {
  font-family: var(--serif);
  font-weight: 560;
  font-size: clamp(2.1rem, 5.2vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.022em;
  margin: 24px 0 20px;
  max-width: 20ch;
}
.article-body { position: relative; }
.article-grid {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 60px;
  align-items: start;
}
.prose { font-size: 17px; line-height: 1.85; color: var(--ink); }
.prose > * + * { margin-top: 1.5em; }
.prose > p:first-of-type::first-letter {
  font-family: var(--serif);
  font-size: 3.6em;
  float: left;
  line-height: 0.82;
  padding-right: 12px;
  padding-top: 4px;
  color: var(--acid);
  font-weight: 600;
}
.prose h2 {
  font-family: var(--serif);
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-top: 2.4em;
  padding-top: 0.4em;
  scroll-margin-top: 90px;
}
.prose h2 .hnum {
  font-family: var(--mono); font-size: 12px;
  color: var(--acid); margin-right: 12px;
  letter-spacing: 0.1em; vertical-align: middle;
}
.prose h3 {
  font-family: var(--serif); font-size: 1.3rem; font-weight: 600;
  margin-top: 2em; scroll-margin-top: 90px;
}
.prose a:not(.gterm) {
  color: var(--acid);
  border-bottom: 1px solid color-mix(in srgb, var(--acid) 45%, transparent);
}
.prose strong { font-weight: 650; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: 0.5em; }
.prose li::marker { color: var(--acid); }
.prose blockquote {
  border-left: 2px solid var(--acid);
  padding: 6px 0 6px 22px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.15em;
  color: var(--ink-dim);
}
.prose hr {
  border: none;
  border-top: 1px solid var(--line-strong);
  margin: 3em auto;
  width: 40%;
  position: relative;
}
.prose hr::after {
  content: "◆";
  position: absolute; top: -11px; left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  padding: 0 12px;
  color: var(--acid); font-size: 11px;
}
.prose code {
  font-family: var(--mono); font-size: 0.86em;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 7px;
}
.prose pre {
  background: #0d0d10;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 1.8em;
}
[data-theme="light"] .prose pre { background: #141310; }
.prose pre .code-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: #8a8a93;
}
.prose pre .code-head .dots { display: flex; gap: 6px; }
.prose pre .code-head .dots i {
  width: 9px; height: 9px; border-radius: 50%;
  background: #3a3a42; display: block;
}
.copy-btn {
  background: transparent; border: 1px solid rgba(255,255,255,0.16);
  color: #bdbdbd; border-radius: 7px;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 5px 12px; cursor: pointer;
  transition: all 0.25s;
}
.copy-btn:hover { border-color: var(--acid); color: var(--acid); }
.prose pre code {
  display: block;
  background: transparent; border: none;
  padding: 18px 20px;
  color: #d7d7d2;
  overflow-x: auto;
  font-size: 13.5px; line-height: 1.7;
}
.prose img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* glossary term tooltip */
.gterm {
  color: var(--acid);
  border-bottom: 1px dotted var(--acid);
  cursor: help;
  position: relative;
  white-space: nowrap;
  font-weight: 550;
}
.gloss-pop {
  position: fixed;
  z-index: 1500;
  max-width: 300px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: 0 18px 50px rgba(0,0,0,0.45);
  font-size: 13.5px; line-height: 1.6;
  color: var(--ink-dim);
  opacity: 0; transform: translateY(6px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}
.gloss-pop.show { opacity: 1; transform: translateY(0) scale(1); }
.gloss-pop b {
  display: block;
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--acid);
  margin-bottom: 6px;
}

/* TOC */
.toc {
  position: sticky; top: calc(var(--nav-h) + 28px);
  border-left: 1px solid var(--line-strong);
  padding-left: 22px;
  font-size: 13.5px;
}
.toc h4 {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 14px;
}
.toc ol { list-style: none; }
.toc li { margin-bottom: 10px; line-height: 1.45; }
.toc a { color: var(--ink-faint); transition: color 0.2s; }
.toc a:hover, .toc a.active { color: var(--acid); }
.toc a.active { font-weight: 600; }

/* next / prev */
.pager {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 90px 0 0;
  border-top: 1px solid var(--line-strong);
  padding-top: 34px;
}
.pager a {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: border-color 0.3s, transform 0.3s;
}
.pager a:hover { border-color: var(--acid); transform: translateY(-3px); }
.pager .dir {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-faint); display: block; margin-bottom: 10px;
}
.pager .t {
  font-family: var(--serif); font-size: 1.25rem; font-weight: 560;
  line-height: 1.3;
}
.pager .next { text-align: right; }

/* ============ ABOUT / ARCHIVE ============ */
.page-head { padding: calc(var(--nav-h) + 70px) 0 10px; }
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 560; letter-spacing: -0.025em;
  line-height: 1.05; margin: 22px 0 18px;
}
.page-head h1 em { font-style: italic; color: var(--acid); font-weight: 400; }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  margin-top: 40px; align-items: start;
}
.about-grid .big {
  font-family: var(--serif); font-size: 1.35rem; line-height: 1.6;
}
.stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line-strong);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius); overflow: hidden;
  margin: 50px 0;
}
.stat { background: var(--bg); padding: 28px 24px; }
.stat b {
  font-family: var(--serif); font-size: 2.2rem; font-weight: 600;
  display: block; color: var(--acid);
}
.stat span {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-faint);
}
.arch-year {
  font-family: var(--mono); font-size: 13px;
  letter-spacing: 0.24em; color: var(--acid);
  margin: 54px 0 6px;
}

/* ============ FOOTER ============ */
footer {
  margin-top: 110px;
  border-top: 1px solid var(--line-strong);
  padding: 36px 0 34px;
  overflow: hidden;
}
.foot-row {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-faint);
}
.foot-row a:hover { color: var(--acid); }

/* ============ SEARCH OVERLAY ============ */
.search-overlay {
  position: fixed; inset: 0; z-index: 1600;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  display: none;
  padding: 12vh 24px 24px;
}
.search-overlay.open { display: block; }
.search-box { max-width: 680px; margin: 0 auto; }
.search-box input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  padding: 10px 4px 18px;
  outline: none;
}
.search-box input:focus { border-color: var(--acid); }
.search-hint {
  font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint); margin-top: 14px;
}
.search-results { margin-top: 30px; max-height: 55vh; overflow-y: auto; }
.search-results a {
  display: block; padding: 18px 6px;
  border-bottom: 1px solid var(--line);
}
.search-results a:hover { background: var(--glow); }
.search-results .t { font-family: var(--serif); font-size: 1.3rem; font-weight: 560; }
.search-results .m {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-faint); margin-top: 6px;
}

/* reveal on scroll */
.rv { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1); }
.rv.in { opacity: 1; transform: none; }

/* empty state */
.empty {
  padding: 70px 0; text-align: center;
  color: var(--ink-faint);
  font-family: var(--serif); font-style: italic; font-size: 1.3rem;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: 1fr; }
  .toc { display: none; }
  .index-row { grid-template-columns: 44px 1fr; }
  .index-row .thumb { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 640px) {
  .nav-links a:not(.keep) { display: none; }
  .index-row { grid-template-columns: 1fr; gap: 8px; }
  .index-row .num { padding-top: 0; }
  .pager { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--nav-h) + 44px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ============ LANG TOGGLE + AUTHOR BOX ============ */
.lang-toggle {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  width: 38px; height: 38px;
  padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-dim);
  transition: all 0.25s;
  flex: none;
}
.lang-toggle:hover { border-color: var(--acid); color: var(--acid); }

.author-box {
  margin-top: 60px;
  padding: 30px 32px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--glow);
}
.author-box p {
  margin-top: 14px;
  color: var(--ink-dim);
  font-size: 15.5px;
  line-height: 1.7;
}
.author-box p strong { color: var(--ink); }