/* Post page: header, reading column, table of contents, and the components posts embed
   (stats, tables, charts, diagrams, terminals, packet layers). Class names match post sources. */

.progress { position: fixed; inset: 0 0 auto 0; z-index: calc(var(--z-header) + 1); height: 2px; pointer-events: none; }
.progress span { display: block; height: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0); }

/* ---------- head ---------- */

.post-head { max-width: var(--maxw); margin: 0 auto; padding: clamp(112px, 15vw, 190px) var(--gutter) clamp(40px, 6vw, 80px); }
.post-head__back { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-dim); }
.post-head__meta { margin-top: clamp(32px, 5vw, 64px); font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-dim); }
.post-head__sub { max-width: 36em; margin-top: 20px; font-size: clamp(1.05rem, 1.6vw, 1.3rem); line-height: 1.5; color: var(--text-dim); }
.post-head__title {
  max-width: 16em;
  margin-top: 20px;
  font-size: clamp(2.4rem, 6vw, 5.8rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.02;
  padding-bottom: 0.06em;
  text-wrap: balance;
}

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

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px);
  justify-content: center;
  gap: 64px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(72px, 10vw, 140px);
}
.post-layout.has-toc { grid-template-columns: 210px minmax(0, 760px); }

.toc { position: sticky; top: 104px; align-self: start; font-size: 0.85rem; }
.toc ol { display: grid; gap: 4px; }
.toc a { display: block; padding: 4px 0 4px 14px; border-left: 1px solid var(--line); color: var(--text-dim); line-height: 1.4; transition: color 0.3s, border-color 0.3s; }
.toc a:hover, .toc li.is-active a { color: var(--text); border-left-color: var(--accent); }

@media (max-width: 1099px) {
  .post-layout.has-toc { grid-template-columns: minmax(0, 760px); }
  .toc { display: none; }
}

.js:not(.reduce):not(.no-anim) .post-body > * { opacity: 0; transform: translateY(24px); }

/* ---------- reading column ---------- */

.post-body { font-size: 1.06rem; line-height: 1.72; }
.post-body > p { margin: 0 0 1.25em; }
.post-body b { font-weight: 600; }
.post-body h2 { margin: clamp(56px, 7vw, 96px) 0 24px; font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 500; letter-spacing: -0.04em; line-height: 1.1; scroll-margin-top: 96px; }
.post-body h3 { margin: 40px 0 12px; font-size: 1.15rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1.3; }
.post-body h3.sub { margin-top: 44px; }
.post-body code { font-family: var(--font-mono); font-size: 0.86em; color: var(--accent); }
.post-body a { color: var(--accent); text-decoration: underline; text-decoration-color: var(--accent-soft); text-underline-offset: 3px; transition: text-decoration-color 0.3s; }
.post-body a:hover { text-decoration-color: var(--accent); }
.links { font-family: var(--font-mono); font-size: 0.88rem; }

/* ---------- project brief ---------- */

.brief { margin: 0 0 40px; padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.02); }
.brief__summary { margin: 0 0 16px; font-size: 1.02rem; line-height: 1.6; }
.brief__facts { display: grid; gap: 8px; margin: 0; }
.brief__facts div { display: grid; grid-template-columns: 72px 1fr; gap: 16px; }
.brief__facts dt { font-family: var(--font-mono); font-size: 0.76rem; line-height: 1.9; color: var(--text-dim); }
.brief__facts dd { margin: 0; font-size: 0.9rem; line-height: 1.6; }
.post-body p.chain { margin: 26px 0 0; font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-dim); }
.post-body p.chain b { font-weight: 500; color: var(--accent); }
.dim { color: var(--text-dim); }

/* ---------- media ---------- */

figure { margin: 32px 0; }
figure img { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); background: #1a1d25; }
figcaption { margin-top: 10px; font-family: var(--font-mono); font-size: 0.76rem; line-height: 1.55; color: var(--text-dim); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 32px 0; }
.pair figure { margin: 0; }
@media (max-width: 640px) { .pair { grid-template-columns: 1fr; } }

/* ---------- stat grid ---------- */

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 36px 0; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { padding: 18px 16px; background: var(--bg); }
.stat b { display: block; font-size: 1.6rem; font-weight: 500; letter-spacing: -0.03em; line-height: 1.2; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat span { display: block; margin-top: 6px; font-size: 0.82rem; line-height: 1.4; color: var(--text-dim); }
@media (max-width: 520px) { .stats { grid-template-columns: repeat(2, 1fr); } }

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

.table-wrap { overflow-x: auto; margin: 28px 0; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
table.data th { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); text-align: left; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 500; color: var(--text-dim); white-space: nowrap; }
table.data td { padding: 9px 12px 9px 0; border-bottom: 1px solid var(--line); vertical-align: top; line-height: 1.5; }
table.data td.mono { font-family: var(--font-mono); font-size: 0.82rem; }
table.data .num { padding-right: 0; padding-left: 12px; text-align: right; font-family: var(--font-mono); font-size: 0.82rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data .dim { color: var(--text-dim); }
table.data tr:last-child td { border-bottom: 0; }
/* Roomy tables (the impulse posts): headers wrap, every column keeps a gap, and a first-column number reads from the left. */
table.data.roomy th { padding-right: 18px; white-space: normal; vertical-align: bottom; line-height: 1.35; }
table.data.roomy td { padding-right: 18px; }
table.data.roomy th.num, table.data.roomy td.num { padding-left: 18px; }
table.data.roomy th:last-child, table.data.roomy td:last-child { padding-right: 0; }
table.data.roomy th.num:first-child, table.data.roomy td.num:first-child { padding-left: 0; text-align: left; }
table.data.roomy th.num { text-align: right; }
table.data.roomy th.num:first-child { text-align: left; }
table.data.roomy td.num.dim { font-family: var(--font-sans); font-size: 0.88rem; white-space: normal; }

/* ---------- callout, code, terminal ---------- */

.callout { margin: 32px 0; padding: 16px 18px; border-left: 2px solid var(--accent-dim); background: rgba(255, 255, 255, 0.03); font-size: 0.92rem; color: var(--text-dim); }
.callout p { margin: 0 0 10px; font-size: 0.92rem; }
.callout p:last-child { margin: 0; }

.codeblock, .term { margin: 32px 0; padding: 18px 20px; overflow-x: auto; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line); border-radius: var(--radius); }
.codeblock code { font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.6; color: var(--text); white-space: pre; }
.codeblock .cm { color: var(--text-dim); }
.codeblock .kw { color: var(--accent); }
.term { margin-bottom: 8px; }
.term pre { margin: 0; font-family: var(--font-mono); font-size: 0.76rem; line-height: 1.75; color: var(--text); white-space: pre; }
.term .pr, .term .ts, .term .dim { color: var(--text-dim); }
.term .pr { user-select: none; }
.term .fl { color: var(--accent); }

/* ---------- SVG diagrams and charts ---------- */

.diagram-wrap, .chart-wrap { overflow-x: auto; }
.chart-wrap { margin: 28px 0 8px; }
.diagram, .chart { display: block; width: 100%; min-width: 640px; height: auto; }

.diagram .box { fill: rgba(255, 255, 255, 0.03); stroke: #2a2b2e; stroke-width: 1; }
.diagram .box.hot { stroke: var(--accent-dim); }
.diagram .fill { fill: rgba(232, 150, 63, 0.16); stroke: var(--accent-dim); stroke-width: 1; }
.diagram .t { font-family: var(--font-mono); font-size: 13px; fill: var(--text); }
.diagram .s { font-family: var(--font-mono); font-size: 11px; fill: var(--text-dim); }
.diagram .hotT { font-family: var(--font-mono); font-size: 11px; fill: var(--accent); }
.diagram .arrow { stroke: var(--accent-dim); stroke-width: 1.5; fill: none; }
.diagram .head { fill: var(--accent-dim); }
.diagram .axis { stroke: var(--text-dim); stroke-width: 1; }
.diagram .dash { stroke: var(--text-dim); stroke-width: 1; stroke-dasharray: 4 3; }
.diagram .hotLine { stroke: var(--accent); stroke-width: 1.5; }

.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .lbl { font-family: var(--font-mono); font-size: 11.5px; fill: var(--text); }
.chart .tick { font-family: var(--font-mono); font-size: 10.5px; fill: var(--text-dim); }
.chart .val { font-family: var(--font-mono); font-size: 11px; fill: var(--text-dim); }
.chart .val.hot { fill: var(--accent); }
.chart .val.dim { fill: var(--text-dim); }
.chart .val.inside { fill: var(--bg); font-weight: 700; }
.chart .bar-before, .chart .key-before { fill: #4a4844; }
.chart .bar-after, .chart .key-after { fill: var(--accent); }
.chart .bar-never { fill: #4a4844; stroke: var(--text-dim); stroke-dasharray: 4 3; }
.chart .budget { stroke: var(--text-dim); stroke-dasharray: 4 4; }
.chart .line-brute { fill: none; stroke: #b9b5ad; stroke-width: 2; }
.chart .line-hash { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart .dot-brute { fill: #b9b5ad; }
.chart .dot-hash { fill: var(--accent); }
.chart .key-line-brute { stroke: #b9b5ad; stroke-width: 2; }
.chart .key-line-hash { stroke: var(--accent); stroke-width: 2; }
.chart .key-line-dash { stroke: var(--text-dim); stroke-width: 2; stroke-dasharray: 4 3; }
.chart .dash-brute { fill: none; stroke: #b9b5ad; stroke-width: 2; stroke-dasharray: 5 4; }
.chart .dash-hash { fill: none; stroke: var(--accent); stroke-width: 2; stroke-dasharray: 5 4; }
.chart .tickmark { stroke: #b9b5ad; stroke-width: 1.5; opacity: 0.45; }
.chart .tickmark.hot { stroke: var(--accent); }
.chart .tickmark.alarm { stroke: #e0e0e0; }
.chart .box { fill: rgba(255, 255, 255, 0.03); stroke: var(--line); stroke-width: 1.5; }
.chart .box.hot { stroke: var(--accent); }
.chart .arrow { fill: none; stroke: var(--text-dim); stroke-width: 1.5; }
.chart .head { fill: var(--text-dim); }
.chart text.nt { fill: var(--text); font-family: var(--font-mono); font-size: 12.5px; text-anchor: middle; }
.chart text.nt.hotlabel { fill: var(--accent); }
.chart text.nd { fill: var(--text-dim); font-family: var(--font-mono); font-size: 10.5px; text-anchor: middle; }
.chart .hollow { fill: none; stroke: #b9b5ad; stroke-width: 2; }
.chart .stem { stroke: #b9b5ad; stroke-width: 1.5; opacity: 0.5; }
.chart .stem.hot { stroke: var(--accent); opacity: 0.7; }
.chart .dot-plain { fill: #b9b5ad; }
.chart .b7 { fill: var(--accent); }
.chart .b7g { fill: #b9b5ad; }

/* ---------- packet layers, bars, matrices (Sentinel posts) ---------- */

.sizebar { display: flex; height: 30px; margin: 24px 0 8px; font-family: var(--font-mono); font-size: 0.74rem; }
.sizebar span { display: block; padding: 0 10px; line-height: 30px; color: var(--bg); white-space: nowrap; overflow: hidden; }
.layer { margin: 28px 0 0; }
.layer-title { display: flex; flex-wrap: wrap; gap: 2px 12px; margin: 0 0 10px; font-family: var(--font-mono); font-size: 0.8rem; }
.layer-title b { color: var(--c); font-weight: 700; }
.layer-title span { color: var(--text-dim); }
.fields { display: flex; flex-wrap: wrap; gap: 10px 8px; }
.fld { display: flex; flex-direction: column; gap: 3px; min-width: 0; max-width: 100%; }
.fld .by { padding: 6px 8px; border: 1px solid var(--c); border-radius: 3px; background: rgba(255, 255, 255, 0.03); font-family: var(--font-mono); font-size: 0.8rem; color: var(--text); overflow-wrap: anywhere; }
.fld .lb { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-dim); }
.fld .vl { font-family: var(--font-mono); font-size: 0.72rem; color: var(--c); }

.matrix { display: grid; gap: 6px; margin: 24px 0 8px; overflow-x: auto; }
.mrow { display: grid; grid-template-columns: 230px minmax(340px, 1fr) 28px; align-items: center; gap: 12px; min-width: 620px; font-family: var(--font-mono); font-size: 0.72rem; }
.ml { color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cells { display: grid; grid-template-columns: repeat(19, 1fr); gap: 3px; }
.cells i { display: block; height: 14px; background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line); }
.cells i.on { background: var(--accent); border-color: var(--accent); }
.mc { text-align: right; color: var(--text-dim); }

.reasm { display: grid; gap: 12px; margin: 24px 0 8px; }
.rrow { display: grid; grid-template-columns: 72px 1fr; gap: 4px 12px; align-items: center; font-family: var(--font-mono); font-size: 0.72rem; }
.rl { color: var(--text); }
.rtrack { position: relative; height: 16px; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); }
.rbar { position: absolute; top: 0; bottom: 0; background: var(--accent); }
.rbar.dup { background: transparent; outline: 1px dashed var(--accent-dim); outline-offset: -1px; }
.rbar.done { background: var(--text-dim); }
.rn { grid-column: 2; line-height: 1.4; color: var(--text-dim); }

/* ---------- older / newer ---------- */

.post-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: var(--maxw); margin: 0 auto; padding: clamp(40px, 6vw, 72px) var(--gutter) clamp(72px, 10vw, 140px); border-top: 1px solid var(--line); }
.post-step { display: flex; flex-direction: column; gap: 14px; }
.post-step--older { align-items: flex-end; text-align: right; grid-column: 2; }
.post-step__dir { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-dim); }
.post-step__title { max-width: 18em; font-size: clamp(1.4rem, 2.8vw, 2.4rem); font-weight: 500; letter-spacing: -0.04em; line-height: 1.12; transition: color 0.3s, transform 0.6s var(--ease); }
.post-step:hover .post-step__title { color: var(--accent); transform: translateX(8px); }
.post-step--older:hover .post-step__title { transform: translateX(-8px); }
@media (max-width: 720px) {
  .post-steps { grid-template-columns: 1fr; }
  .post-step--older { grid-column: 1; align-items: flex-start; text-align: left; }
}