/* ── LONGREAD ──
   Hosszú, fejezetekre bontott tananyagokhoz (oldalsó tartalomjegyzék, ábrák, táblázatok).
   A css/style.css után töltődik. */

.longread {
  --fg:        var(--text);
  --fg-2:      var(--text-2);
  --muted:     var(--text-3);
  --rule:      #CBD5E1;
  --rule-2:    var(--border);
  --surface:   #FFFFFF;
  --accent:    var(--blue);
  --on-accent: #FFFFFF;
  --link:      var(--blue);
  --mark:      #FEF3C7;
  --zebra:     #F8FAFC;
  --th-bg:     #F1F5F9;

  /* ábra-családok */
  --bank-f:   #EAF0FD; --bank-s:   #1A56DB;
  --chain-f:  #E7F6EC; --chain-s:  #2D7A4F;
  --bridge-f: #FDF3DC; --bridge-s: #B7791F;
  --reg-f:    #F1F5F9; --reg-s:    #64748B;
  --user-f:   #F8FAFC; --user-s:   #334155;
  --neutral-f:#FFFFFF; --neutral-s:#94A3B8;
  --good-f:   #E7F6EC; --good-s:   #2D7A4F;
  --bad-f:    #FDECEC; --bad-s:    #C0392B;
  --zone-bank:   #F5F8FE;
  --zone-chain:  #F2FAF5;
  --zone-bridge: #FEF9EE;
  --c-money:   #1141B0;
  --c-msg:     #64748B;
  --c-fee:     #C0392B;
  --c-chain:   #2D7A4F;
  --c-neutral: #94A3B8;
  --bar:  #93A8D6;
  --grid: #E2E8F0;

  --f-mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;
  --toc-w: 220px;

  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3.5rem 2rem 6rem;
  display: grid;
  grid-template-columns: var(--toc-w) minmax(0, 720px);
  column-gap: 4rem;
  align-items: start;
}

.longread-head { grid-column: 2; min-width: 0; }
.toc-side      { grid-column: 1; grid-row: 1 / span 2; }
.longread-content { grid-column: 2; grid-row: 2; min-width: 0; }
.longread > .subscribe { grid-column: 2; grid-row: 3; width: 100%; margin: 4rem 0 0; }

.longread-sub {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--text-2);
  margin: -0.5rem 0 1.75rem;
}

.longread-head .article-meta { flex-wrap: wrap; margin-bottom: 1.5rem; }

.longread-note {
  font-size: 0.9375rem;
  font-style: italic;
  color: var(--text-3);
  line-height: 1.7;
}

.longread-head .download-link { margin-top: 1.5rem; }

.howto {
  margin: 2.5rem 0 1rem;
  padding: 1.5rem 1.75rem 0.75rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-top: 2px solid var(--text);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-2);
}

.howto ul { margin: 0 0 1rem 1.1rem; display: flex; flex-direction: column; gap: 0.5rem; }

.box-k {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.75rem !important;
}

.howto .box-k { color: var(--text); }

.tag-fc {
  font-size: 0.68em;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  border: 1px solid currentColor;
  padding: 0 0.35em;
  border-radius: 2px;
  vertical-align: 0.12em;
  white-space: nowrap;
}

/* ── TOC ── */
.longread nav.toc-side,
.longread .toc-mobile nav {
  position: static;
  background: none;
  backdrop-filter: none;
  border: 0;
  z-index: auto;
}

.longread nav.toc-side {
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 108px);
  overflow-y: auto;
  padding: 0 0.25rem 1rem 0;
  font-size: 0.8125rem;
  line-height: 1.35;
  scrollbar-width: thin;
}

.toc-k {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  border-bottom: 2px solid var(--text);
  padding-bottom: 0.625rem;
  margin-bottom: 0.5rem;
}

.longread .toc-side ol,
.longread .toc-mobile ol { list-style: none; margin: 0; padding: 0; display: block; }

.longread .toc-mobile li { padding: 0; font-size: 0.9375rem; }

.toc-side li a,
.toc-mobile li a {
  display: grid;
  grid-template-columns: 1.9em minmax(0, 1fr);
  gap: 4px;
  padding: 0.375rem 0.5rem 0.375rem 0.625rem;
  margin-left: -0.75rem;
  border-left: 2px solid transparent;
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s;
}

.toc-side li a:hover,
.toc-mobile li a:hover { color: var(--blue); }

.toc-n {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  color: var(--text-3);
  font-variant-numeric: lining-nums tabular-nums;
}

.toc-app:first-of-type { border-top: 1px solid var(--border); margin-top: 0.375rem; padding-top: 0.375rem; }

.toc-side a.is-current { color: var(--text); font-weight: 600; border-left-color: var(--blue); }
.toc-side a.is-current .toc-n { color: var(--blue); }

.toc-mobile { display: none; }

/* ── CHAPTERS ── */
.longread-content.article-body { font-size: 1.0625rem; }

.ch { margin-top: 4.5rem; padding-top: 1.5rem; border-top: 2px solid var(--text); }
.ch:first-of-type { margin-top: 1rem; }

.ch-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 1.25rem;
  align-items: end;
  margin-bottom: 2rem;
}

.ch-num {
  grid-row: 1 / span 2;
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: clamp(2.75rem, 6vw, 4rem);
  line-height: 0.85;
  color: var(--blue);
  font-variant-numeric: lining-nums;
  letter-spacing: -0.03em;
}

.ch-kicker {
  font-size: 0.68rem !important;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin: 0 !important;
  line-height: 1.4 !important;
}

.article-body .ch h2 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.625rem, 3.2vw, 2.125rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.article-body .ch h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 2.75rem 0 1rem;
}

.article-body .ch h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  margin: 2rem 0 0.625rem;
}

.article-body li::marker { color: var(--text-3); }

/* lead + takeaway */
.lead {
  background: var(--bg-2);
  border-left: 3px solid var(--blue);
  padding: 1.25rem 1.5rem 0.25rem;
  margin: 0 0 2.5rem;
  font-size: 1.0625rem;
}

.lead .box-k { color: var(--blue); }
.article-body .lead p { margin-bottom: 1rem; }

.takeaway {
  margin: 3rem 0 2rem;
  padding: 1.25rem 1.5rem 0.5rem;
  border-top: 2px solid var(--text);
  border-bottom: 1px solid var(--border);
  background: #F4FBF6;
}

.takeaway .box-k { color: var(--green-dark); }

.article-body .takeaway ul { list-style: none; margin: 0 0 1rem; counter-reset: t; gap: 0.625rem; }

.article-body .takeaway li {
  position: relative;
  padding-left: 2.25rem;
  counter-increment: t;
  line-height: 1.65;
}

.takeaway li::before {
  content: counter(t, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--green-dark);
}

/* sources */
.sources {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--rule);
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-3);
}

.article-body .sources ul,
.article-body .sources ol { margin: 0 0 0 1.1rem; gap: 0.25rem; }
.article-body .sources li { font-size: 0.8125rem; line-height: 1.55; color: var(--text-3); overflow-wrap: anywhere; }
.article-body .sources a { color: var(--text-2); }
.ext { font-size: 0.85em; margin-left: 2px; text-decoration: none; }

/* ── TABLES ── */
.tbl-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 2rem 0;
  border-top: 2px solid var(--text);
  border-bottom: 1px solid var(--border);
}

.article-body .tbl-scroll table { margin: 0; min-width: 520px; font-size: 0.875rem; font-variant-numeric: tabular-nums lining-nums; }
.article-body .tbl-scroll th { background: var(--th-bg); font-size: 0.78rem; letter-spacing: 0.02em; vertical-align: bottom; }
.article-body .tbl-scroll td { padding: 0.625rem 1rem; }
.article-body .tbl-scroll td:first-child { font-weight: 600; color: var(--text); }
.article-body .tbl-scroll tbody tr:nth-child(even) td { background: var(--zebra); }
.article-body .tbl-scroll td a { font-size: 0.8rem; overflow-wrap: anywhere; }
.article-body table.gloss td:nth-child(2) { font-family: var(--f-mono); font-size: 0.8rem; color: var(--text-3); font-weight: 400; }

/* glossary search */
.gloss-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  margin: 1.5rem 0 0.5rem;
  position: sticky;
  top: 60px;
  background: var(--bg);
  padding: 0.75rem 0;
  z-index: 5;
}

.gloss-tools label {
  width: 100%;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

.gloss-tools input {
  flex: 1 1 220px;
  min-width: 0;
  font: inherit;
  font-size: 0.9375rem;
  padding: 0.625rem 0.875rem;
  color: var(--text);
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-bottom: 2px solid var(--blue);
  border-radius: 0;
}

.gloss-tools input:focus-visible { outline: 2px solid var(--blue); outline-offset: 1px; }
.gloss-tools output { font-size: 0.8rem; color: var(--text-3); font-variant-numeric: tabular-nums; }
.gloss-empty { font-style: italic; color: var(--text-3); }
.longread mark { background: var(--mark); color: inherit; padding: 0 1px; }

/* inline code + pre */
.article-body li code,
.article-body td code {
  font-family: var(--f-mono);
  font-size: 0.875em;
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  color: var(--blue-dark);
}

.article-body pre code { white-space: pre; }

/* ── DIAGRAMS ── */
figure.diagram { margin: 2.5rem 0 2.75rem; }

.dg-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: #FFFFFF;
  border: 1px solid var(--border);
  padding: 1rem;
}

.dg-scroll > svg { display: block; width: 100%; height: auto; max-width: 100%; overflow: visible; }
figure.diagram .dg-scroll > svg { min-width: 600px; max-width: none; }
figure.diagram.wide .dg-scroll > svg { min-width: 720px; }

.dg-hint { display: none; font-size: 0.75rem; color: var(--text-3); margin: 0.375rem 0 0; }

figure.diagram figcaption {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-3);
}

figure.diagram figcaption strong { color: var(--text); font-weight: 600; margin-right: 0.25em; }

.fig-no {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-right: 0.625em;
}

/* SVG vocabulary */
svg.dg { color: var(--fg); font-family: 'Inter', system-ui, sans-serif; }
svg.dg rect, svg.dg circle, svg.dg ellipse, svg.dg path, svg.dg polygon { stroke-width: 1.3; }
.b-neutral { fill: var(--neutral-f); stroke: var(--neutral-s); }
.b-bank    { fill: var(--bank-f);    stroke: var(--bank-s); }
.b-chain   { fill: var(--chain-f);   stroke: var(--chain-s); }
.b-bridge  { fill: var(--bridge-f);  stroke: var(--bridge-s); }
.b-reg     { fill: var(--reg-f);     stroke: var(--reg-s); }
.b-user    { fill: var(--user-f);    stroke: var(--user-s); }
.b-accent  { fill: var(--accent);    stroke: var(--accent); }
.b-good    { fill: var(--good-f);    stroke: var(--good-s); }
.b-bad     { fill: var(--bad-f);     stroke: var(--bad-s); }
.zone-bank   { fill: var(--zone-bank);   stroke: var(--bank-s);   stroke-opacity: .35; stroke-dasharray: 4 4; }
.zone-chain  { fill: var(--zone-chain);  stroke: var(--chain-s);  stroke-opacity: .35; stroke-dasharray: 4 4; }
.zone-bridge { fill: var(--zone-bridge); stroke: var(--bridge-s); stroke-opacity: .35; stroke-dasharray: 4 4; }
svg.dg .l-money   { fill: none; stroke: var(--c-money); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
svg.dg .l-msg     { fill: none; stroke: var(--c-msg); stroke-width: 1.5; stroke-dasharray: 6 4; }
svg.dg .l-fee     { fill: none; stroke: var(--c-fee); stroke-width: 1.8; stroke-dasharray: 1.5 4; stroke-linecap: round; }
svg.dg .l-neutral { fill: none; stroke: var(--c-neutral); stroke-width: 1.3; }
svg.dg .l-chain   { fill: none; stroke: var(--c-chain); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
svg.dg .m-money   { fill: var(--c-money); stroke: none; }
svg.dg .m-msg     { fill: var(--c-msg); stroke: none; }
svg.dg .m-fee     { fill: var(--c-fee); stroke: none; }
svg.dg .m-neutral { fill: var(--c-neutral); stroke: none; }
svg.dg .m-chain   { fill: var(--c-chain); stroke: none; }
svg.dg text       { fill: var(--fg); stroke: none; }
svg.dg .t         { font-size: 13px; fill: var(--fg); }
svg.dg .t-strong  { font-size: 13px; font-weight: 600; fill: var(--fg); }
svg.dg .t-small   { font-size: 11px; fill: var(--muted); }
svg.dg .t-mono    { font-family: var(--f-mono); font-size: 12px; fill: var(--fg); }
svg.dg .t-num     { font-family: 'Playfair Display', serif; font-size: 18px; font-weight: 700; fill: var(--accent); font-variant-numeric: lining-nums tabular-nums; }
svg.dg .t-muted   { fill: var(--muted); }
svg.dg .t-onaccent { fill: var(--on-accent); font-weight: 600; }
svg.dg .t-title   { font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; fill: var(--muted); }
svg.dg .lbl-bg    { fill: #FFFFFF; stroke: none; }
svg.dg .bar        { fill: var(--bar); stroke: none; }
svg.dg .bar-accent { fill: var(--accent); stroke: none; }
svg.dg .bar-good   { fill: var(--good-s); stroke: none; }
svg.dg .bar-bad    { fill: var(--bad-s); stroke: none; }
svg.dg .axis { fill: none; stroke: var(--muted); stroke-width: 1; }
svg.dg .grid { fill: none; stroke: var(--grid); stroke-width: 1; }

.longread-end { color: var(--text-3); }

/* reading progress */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 110; pointer-events: none; }
.progress span { display: block; height: 100%; width: 100%; background: var(--blue); transform-origin: 0 50%; transform: scaleX(0); }

/* ── RESPONSIVE ── */
@media (min-width: 1240px) {
  figure.diagram.wide { margin-right: -160px; }
}

@media (max-width: 1000px) {
  .longread { grid-template-columns: minmax(0, 1fr); padding-top: 2.5rem; }
  .longread-head, .longread-content { grid-column: 1; }
  .longread-head { grid-row: 1; }
  .longread-content { grid-row: 2; }
  .longread > .subscribe { grid-column: 1; }
  .longread nav.toc-side { display: none; }

  .toc-mobile {
    display: block;
    margin: 0 0 1rem;
    border: 1px solid var(--border);
    border-top: 2px solid var(--text);
    background: var(--bg-2);
  }

  .toc-mobile summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text);
  }

  .toc-mobile summary::-webkit-details-marker { display: none; }
  .toc-mobile summary::after { content: "+"; font-size: 1rem; line-height: 1; }
  .toc-mobile[open] summary::after { content: "−"; }
  .longread .toc-mobile nav { padding: 0 1rem 0.75rem; border-top: 1px solid var(--border); }
  .toc-mobile li a { margin-left: 0; padding-left: 0; border-left: 0; padding-block: 0.5rem; }
}

@media (max-width: 700px) {
  .dg-hint { display: block; }
  .dg-scroll { padding: 0.625rem; }
}

@media (max-width: 540px) {
  .longread { padding: 2rem 1.25rem 4rem; }
  .howto { padding: 1.25rem 1.25rem 0.5rem; }
  .lead, .takeaway { padding-left: 1.125rem; padding-right: 1.125rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* a sticky nav ne takarja ki a horgonyokat */
.longread [id] { scroll-margin-top: 76px; }