/* ============================================
   bitcoinnft.online — reference archive
   ============================================ */

:root {
  /* Palette — cooler, reference-style */
  --paper:      #FAFAF7;
  --paper-deep: #F1EFE8;
  --ink:        #0F1419;
  --ink-soft:   #3D4348;
  --ink-faint:  #6B7280;
  --rule:       #D5D2C7;
  --accent:     #1E3A5F;    /* deep navy */
  --hot:        #8B4513;    /* bronze for links */
  --mark:       #FEF3C7;

  /* Type — DM Serif Display + Spectral + JetBrains Mono */
  --font-display: 'DM Serif Display', 'Iowan Old Style', Georgia, serif;
  --font-body:    'Spectral', 'Iowan Old Style', Georgia, serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* Scale — wider measure than rarepepe.cloud */
  --measure: 42rem;
  --pad-x: clamp(1.25rem, 5vw, 2.25rem);
  --pad-y: clamp(2.5rem, 6vw, 4.5rem);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  font-feature-settings: 'liga' 1, 'kern' 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   Site header / nav
   ============================================ */

.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 1.25rem var(--pad-x);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 50;
}

.site-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  text-transform: lowercase;
}

.site-name::before {
  content: '┃ ';
  color: var(--accent);
  font-weight: 700;
}

.site-nav {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  gap: 1.75rem;
  text-transform: lowercase;
  letter-spacing: 0.03em;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 120ms ease;
  position: relative;
}

.site-nav a:hover { color: var(--hot); }
.site-nav a.current { color: var(--ink); }

.site-nav a.current::after {
  content: '';
  position: absolute;
  bottom: -0.4rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

/* ============================================
   Main layout
   ============================================ */

main { padding: var(--pad-y) var(--pad-x); }

.wrap {
  max-width: 68rem;
  margin: 0 auto;
}

/* ============================================
   Homepage hero
   ============================================ */

.home-hero {
  padding: 1rem 0 var(--pad-y);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--pad-y);
  position: relative;
}

.home-hero .kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.home-hero .kicker::before {
  content: '';
  display: inline-block;
  width: 2.5rem;
  height: 1px;
  background: var(--accent);
}

.home-hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1.75rem;
  color: var(--ink);
  max-width: 16ch;
}

.home-hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.home-hero .lede {
  font-size: 1.25rem;
  line-height: 1.55;
  max-width: var(--measure);
  color: var(--ink-soft);
  margin: 0 0 2rem;
  font-weight: 300;
}

.home-hero .cta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--ink);
  padding: 0.65rem 1.25rem;
  display: inline-block;
  transition: all 120ms ease;
}

.home-hero .cta:hover {
  background: var(--ink);
  color: var(--paper);
}

.home-hero .cta::after { content: '  →'; }

/* ============================================
   Section heading (numbered)
   ============================================ */

.section-heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  margin: 0 0 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.section-heading .num {
  color: var(--accent);
  font-weight: 700;
}

.home-section { margin-bottom: 4rem; }

/* ============================================
   Featured article block
   ============================================ */

.featured {
  display: grid;
  gap: 1rem;
  padding: 1rem 0 2rem;
  border-bottom: 1px solid var(--rule);
}

.featured .featured-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

.featured .featured-meta::before {
  content: '◆ Featured · ';
  color: var(--accent);
}

.featured h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0;
}

.featured h3 a {
  color: var(--ink);
  text-decoration: none;
  transition: color 120ms ease;
}

.featured h3 a:hover { color: var(--hot); }

.featured .featured-dek {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0;
  max-width: var(--measure);
  font-weight: 300;
}

.featured .read-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--ink);
  text-decoration: none;
  margin-top: 0.5rem;
  display: inline-block;
  text-transform: lowercase;
}

.featured .read-link::after { content: ' →'; color: var(--accent); }
.featured .read-link:hover { color: var(--hot); }

/* ============================================
   Article list
   ============================================ */

.archive {
  display: grid;
  gap: 0;
  counter-reset: entry;
}

.entry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--rule);
  counter-increment: entry;
  position: relative;
}

.entry::before {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  content: counter(entry, decimal-leading-zero);
  position: absolute;
  top: 1.85rem;
  left: 0;
}

.entry:last-child { border-bottom: none; }

.entry-content {
  padding-left: 2.5rem;
}

.entry-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.entry h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0;
}

.entry h3 a {
  color: var(--ink);
  text-decoration: none;
  transition: color 120ms ease;
}

.entry h3 a:hover { color: var(--hot); }

.entry-dek {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: 0.4rem 0 0;
  max-width: var(--measure);
  font-weight: 300;
}

/* ============================================
   View-all link
   ============================================ */

.view-all {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.view-all a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--ink);
  text-decoration: none;
  text-transform: lowercase;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

.view-all a:hover {
  color: var(--hot);
  border-bottom-color: var(--hot);
}

.view-all a::after { content: ' →'; color: var(--accent); }
.view-all a:hover::after { color: var(--hot); }

/* ============================================
   About teaser
   ============================================ */

.about-teaser p {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin: 0 0 1.5rem;
  font-weight: 300;
}

/* ============================================
   Page header (for articles/about)
   ============================================ */

.page-header {
  padding: 1rem 0 var(--pad-y);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--pad-y);
}

.page-header .kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-header .kicker::before {
  content: '';
  display: inline-block;
  width: 2rem;
  height: 1px;
  background: var(--accent);
}

.page-header h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.page-header .lede {
  font-size: 1.15rem;
  line-height: 1.6;
  max-width: var(--measure);
  color: var(--ink-soft);
  margin: 0;
  font-weight: 300;
}

/* ============================================
   About page
   ============================================ */

.about-body {
  max-width: var(--measure);
  margin: 0 auto;
}

.about-body p {
  margin: 0 0 1.25rem;
  font-size: 1.0625rem;
  line-height: 1.7;
}

.about-body h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.about-body h2::before {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  counter-increment: h2;
  content: counter(h2, decimal-leading-zero);
}

.about-body { counter-reset: h2; }

.about-body a {
  color: var(--hot);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ============================================
   Article page
   ============================================ */

.article-header {
  max-width: var(--measure);
  margin: 0 auto 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
}

.crumbs {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: lowercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 1.5rem;
}

.crumbs a { color: var(--ink-faint); text-decoration: none; }
.crumbs a:hover { color: var(--hot); }

.article-header h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5.5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.article-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  text-transform: uppercase;
}

.article-body {
  max-width: var(--measure);
  margin: 0 auto;
  counter-reset: h2-section;
}

.article-body > p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 4rem;
  line-height: 0.85;
  float: left;
  margin: 0.35rem 0.5rem -0.25rem 0;
  color: var(--accent);
}

.article-body p { margin: 0 0 1.25rem; }

.article-body h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.6rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 2.75rem 0 1rem;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  counter-increment: h2-section;
}

.article-body h2::before {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  content: '§ ' counter(h2-section, decimal-leading-zero);
  font-weight: 500;
}

.article-body h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  font-style: italic;
}

.article-body a {
  color: var(--hot);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-body a:hover { background: var(--mark); }

.article-body ul, .article-body ol {
  padding-left: 1.5rem;
  margin: 0 0 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}

.article-body ul li::marker {
  color: var(--accent);
}

.article-body ol li::marker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
}

.article-body blockquote {
  margin: 1.75rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: var(--ink-soft);
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--paper-deep);
  padding: 0.1em 0.4em;
  border-radius: 2px;
}

.article-body em { font-style: italic; }
.article-body strong { font-weight: 600; }

.pull {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.45rem;
  line-height: 1.35;
  margin: 2.25rem 0;
  padding: 1.75rem 0;
  border-top: 2px solid var(--accent);
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
}

/* ============================================
   Comparison table
   ============================================ */

.comparison {
  margin: 2rem 0;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
  padding: 0;
  overflow-x: auto;
}

.comparison table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.comparison th, .comparison td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.comparison th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--paper);
}

.comparison tr:last-child td { border-bottom: none; }

/* ============================================
   Sources, related
   ============================================ */

.sources, .related {
  max-width: var(--measure);
  margin: 4rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
}

.sources h2, .related h2 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  margin: 0 0 1.25rem;
}

.sources ol {
  padding-left: 1.75rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.sources li {
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.sources li::marker {
  font-family: var(--font-mono);
  color: var(--ink-faint);
}

.sources a {
  color: var(--hot);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  word-break: break-word;
}

.related ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.related a {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  display: inline-block;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.3rem;
  transition: color 120ms ease, border-color 120ms ease;
}

.related a:hover {
  color: var(--hot);
  border-bottom-color: var(--hot);
}

/* ============================================
   Site footer
   ============================================ */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 2.5rem var(--pad-x);
  margin-top: 5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
  text-transform: lowercase;
  letter-spacing: 0.03em;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer .footer-name { color: var(--ink); }

.site-footer .footer-name::before {
  content: '┃ ';
  color: var(--accent);
}

.site-footer nav { display: flex; gap: 1.5rem; }

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

.site-footer a:hover { color: var(--hot); }

/* ============================================
   Accessibility
   ============================================ */

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus { top: 0; }