/* The Slow Builds - a ledger
   ------------------------------------------------------------------ */

:root {
  --paper:      #f4efe2;
  --paper-deep: #ece3d0;
  --card:       #faf6ec;
  --ink:        #211d15;
  --ink-soft:   #564e3e;
  --ink-faint:  #8d8472;
  --rule:       rgba(33, 29, 21, 0.14);
  --rule-soft:  rgba(33, 29, 21, 0.07);
  --accent:     #6b4a8a;
  --accent-ink: #4a3360;
  --good:       #4f7a4a;
  --warn:       #b07d18;
  --bad:        #a8432f;

  --display: "Fraunces", Georgia, serif;
  --body:    "Newsreader", Georgia, serif;
  --mono:    "JetBrains Mono", ui-monospace, Menlo, monospace;

  --gutter:  5.25rem; /* ledger number column */
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
/* Fluid base: the whole layout scales with the viewport. Because the reading
   measure is set in ch, tying font-size to vw makes the column width dynamic
   too - it widens as the window widens instead of freezing at a fixed px. */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: clamp(16px, 0.42vw + 13.3px, 21px); }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.02rem;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* atmosphere: paper grain + a soft warm corner glow */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0.5;
  background-image: radial-gradient(rgba(33,29,21,0.05) 1px, transparent 1px);
  background-size: 3px 3px;
}
.glow {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(60% 50% at 100% 0%, rgba(107,74,138,0.06), transparent 70%),
    radial-gradient(55% 45% at 0% 100%, rgba(176,125,24,0.05), transparent 70%);
}

a { color: var(--accent-ink); text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; text-decoration-thickness: 1px; transition: color .18s, text-decoration-color .18s; }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }
::selection { background: rgba(107,74,138,0.18); }

/* ====================================================================
   Shell : single centered column
   ==================================================================== */
.shell {
  position: relative; z-index: 1;
  width: min(92vw, 84rem);
  margin: 0 auto;
  padding: clamp(1.75rem, 4vw, 3rem) 0 6rem;
}

.topbar {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint);
  padding-bottom: 14px; margin-bottom: clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--rule);
}
.topbar a { color: var(--ink-faint); text-decoration: none; }
.topbar a:hover { color: var(--accent); }
.topbar .dot { opacity: 0.5; padding: 0 0.5em; }

/* ---- masthead (top) ---- */
.masthead { margin-bottom: clamp(1.6rem, 4vw, 2.4rem); }
.wordmark {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(2.9rem, 8vw, 5.2rem); line-height: 0.94;
  letter-spacing: -0.025em; margin: 0; color: var(--ink);
  font-variation-settings: "SOFT" 0, "WONK" 1;
}
.wordmark a { color: inherit; text-decoration: none; }
.tagline {
  font-family: var(--body); font-style: italic; font-size: 1.2rem;
  line-height: 1.4; color: var(--ink-soft); margin: 0.9rem 0 0; max-width: 40ch;
}

.intro {
  margin-top: clamp(1.4rem, 3vw, 2rem); border-left: 2px solid var(--accent);
  padding-left: 1.1rem; max-width: 60ch;
}
.intro .label {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 0.6rem;
}
.intro p { font-size: 1rem; line-height: 1.55; color: var(--ink-soft); margin: 0 0 0.6rem; }
.intro p:last-child { margin-bottom: 0; }
.intro p strong { color: var(--ink); font-weight: 600; }

/* ---- log head + filters ---- */
.log-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  margin-top: clamp(2.4rem, 5vw, 3.4rem); padding-bottom: 0.2rem;
}
.feed-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin: 0; }
.log-count { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--ink-faint); }

.filters { display: flex; flex-wrap: wrap; gap: 7px; margin: 0.9rem 0 0; padding: 0; list-style: none; }
.filter-chip {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.03em; text-transform: lowercase;
  color: var(--ink-soft); background: transparent; cursor: pointer;
  border: 1px solid var(--rule); border-radius: 999px; padding: 3px 11px; transition: all .16s ease;
}
.filter-chip:hover { border-color: var(--accent); color: var(--accent); }
.filter-chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--paper); }

/* ---- ledger feed ---- */
.feed { list-style: none; margin: 1.5rem 0 0; padding: 0; position: relative; }
.feed::before { content: ""; position: absolute; top: 0; bottom: 0; left: var(--gutter); width: 1px; background: var(--rule); }
.entry {
  display: grid;
  grid-template-columns: var(--gutter) 1fr;
  column-gap: clamp(1.1rem, 2.5vw, 1.9rem);
  padding: clamp(1.6rem, 3vw, 2.3rem) 0;
  border-top: 1px solid var(--rule);
}
.feed > .entry:last-child { border-bottom: 1px solid var(--rule); }
.entry[hidden] { display: none; }
.feed-empty { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); padding: 2rem 0 2rem calc(var(--gutter) + 1.5rem); }

.entry-gutter { text-align: right; padding-top: 0.4rem; }
.entry-no { display: block; font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: 0.02em; color: var(--accent); margin-bottom: 0.3rem; }
.entry-date { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.02em; color: var(--ink-faint); line-height: 1.45; }

.entry-title {
  font-family: var(--display); font-weight: 600; letter-spacing: -0.015em;
  font-size: clamp(1.6rem, 3vw, 2.3rem); line-height: 1.08; margin: 0 0 0.55rem;
  font-variation-settings: "SOFT" 0, "WONK" 0;
}
.entry-title a { color: var(--ink); text-decoration: none; background-image: linear-gradient(var(--accent), var(--accent)); background-size: 0% 1.5px; background-repeat: no-repeat; background-position: 0 100%; transition: background-size .28s ease, color .2s; }
.entry-title a:hover { color: var(--accent-ink); background-size: 100% 1.5px; }
.entry-summary { font-size: 1.05rem; line-height: 1.5; color: var(--ink-soft); margin: 0 0 0.95rem; max-width: 54ch; }

.topics { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.topic { font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; text-transform: lowercase; color: var(--accent-ink); border: 1px solid var(--rule); border-radius: 999px; padding: 2px 9px; }

/* staggered reveal */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; animation: rise .7s cubic-bezier(.2,.7,.3,1) forwards; }

/* ====================================================================
   Article page  -  print.css hooks: .post/.post-title/.post-dek/.post-body
   ==================================================================== */
.post { max-width: 74ch; margin: 0 auto; }
.back { display: inline-block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); text-decoration: none; margin-bottom: clamp(2rem, 5vw, 3rem); }
.back:hover { color: var(--accent); }

.post-title {
  font-family: var(--display); font-weight: 600; letter-spacing: -0.02em;
  font-size: clamp(2.1rem, 5vw, 3.3rem); line-height: 1.05; margin: 0 0 1rem;
  font-variation-settings: "SOFT" 0, "WONK" 1;
}
.post-dek { font-family: var(--body); font-style: italic; font-size: 1.28rem; line-height: 1.4; color: var(--ink-soft); margin: 0 0 1.6rem; }

.post-meta-strip {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.1rem;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-faint);
  padding: 0.9rem 0 1rem; margin-bottom: 2.4rem;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.post-meta-strip .topics { display: inline-flex; }
.post-meta-strip .sep { opacity: 0.5; }

.post-body { font-size: 1.12rem; }
.post-body h2 { font-family: var(--display); font-weight: 600; font-size: 1.7rem; letter-spacing: -0.01em; line-height: 1.1; margin: 2.8rem 0 0.8rem; font-variation-settings: "SOFT" 0, "WONK" 1; }
.post-body h3 { font-family: var(--display); font-weight: 600; font-size: 1.25rem; margin: 2rem 0 0.6rem; }
.post-body p { margin: 0 0 1.3rem; }
.post-body ul, .post-body ol { padding-left: 1.3rem; margin: 0 0 1.3rem; }
.post-body li { margin-bottom: 0.5rem; }
.post-body strong { font-weight: 600; color: var(--ink); }
.post-body a { text-decoration-color: var(--accent); }
.post-body blockquote { border-left: 3px solid var(--accent); margin: 1.6rem 0; padding: 0.2rem 0 0.2rem 1.3rem; font-style: italic; color: var(--ink-soft); }

.post-body pre {
  background: #1c1812; color: #efe6d2; font-family: var(--mono);
  font-size: 0.8rem; line-height: 1.6; padding: 16px 18px; border-radius: 6px;
  overflow-x: auto; margin: 0 0 1.5rem; box-shadow: 0 1px 0 rgba(255,255,255,0.4), 0 12px 28px -18px rgba(33,29,21,0.5);
}
.post-body pre code { background: none; padding: 0; font-size: inherit; color: inherit; }
code { font-family: var(--mono); font-size: 0.84em; background: rgba(33,29,21,0.06); padding: 0.1em 0.36em; border-radius: 3px; }

.post-body table { width: 100%; border-collapse: collapse; margin: 0 0 1.6rem; font-family: var(--mono); font-size: 0.82rem; }
.post-body th, .post-body td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); }
.post-body th { font-weight: 500; color: var(--ink); border-bottom: 1.5px solid var(--rule); background: var(--rule-soft); letter-spacing: 0.03em; }
.post-body td { color: var(--ink-soft); }

.post-foot { margin-top: 3.5rem; padding-top: 1.4rem; border-top: 1px solid var(--rule); font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: var(--ink-faint); }
.post-foot a { color: var(--ink-soft); }

/* ---- about ---- */
.about-body { font-size: 1.12rem; }
.about-body p { margin: 0 0 1.3rem; }

/* ====================================================================
   Interactive widgets (entry body)
   ==================================================================== */
.widget {
  margin: 2.4rem 0; padding: 1.4rem 1.5rem 1.5rem;
  background: var(--card); border: 1px solid var(--rule); border-radius: 8px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.5), 0 18px 36px -28px rgba(33,29,21,0.45);
}
.widget-cap { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin: 0 0 0.2rem; }
.widget-title { font-family: var(--display); font-weight: 600; font-size: 1.15rem; margin: 0 0 1.1rem; }
.widget-note { font-family: var(--mono); font-size: 10.5px; line-height: 1.6; color: var(--ink-faint); margin: 1rem 0 0; }

/* throughput simulator */
.sim-readout { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 0.4rem; }
.sim-tokens { font-family: var(--mono); font-size: 0.95rem; color: var(--ink); }
.sim-tokens b { font-size: 1.4rem; font-weight: 500; }
.sim-zone-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; }
.sim-track { position: relative; height: 38px; border-radius: 6px; overflow: hidden; background: var(--paper-deep); margin: 0.5rem 0 0.2rem; }
.sim-fill { position: absolute; inset: 0 auto 0 0; width: 8%; background: var(--good); transition: width .25s cubic-bezier(.3,.7,.3,1), background .25s; }
.sim-ceil { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--bad); opacity: 0.55; }
.sim-ceil::after { content: "32K · GPU limit"; position: absolute; top: -16px; left: 4px; font-family: var(--mono); font-size: 8.5px; color: var(--bad); white-space: nowrap; letter-spacing: 0.04em; }
.sim-dot { position: absolute; top: 50%; width: 7px; height: 7px; border-radius: 50%; background: var(--ink); transform: translate(-50%,-50%); box-shadow: 0 0 0 2px var(--paper-deep); }
.sim-dot span { position: absolute; top: 11px; left: 50%; transform: translateX(-50%); font-family: var(--mono); font-size: 8px; color: var(--ink-faint); white-space: nowrap; }
.sim-range { -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 4px; background: var(--rule); margin: 1.1rem 0 0.3rem; cursor: pointer; }
.sim-range::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 20px; height: 20px; border-radius: 50%; background: var(--accent); border: 3px solid var(--card); box-shadow: 0 2px 6px -1px rgba(33,29,21,0.4); cursor: grab; }
.sim-range::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--accent); border: 3px solid var(--card); cursor: grab; }
.sim-scale { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 9px; color: var(--ink-faint); }
.sim-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; margin-top: 1.1rem; }
.sim-stat { background: var(--paper); border: 1px solid var(--rule); border-radius: 6px; padding: 0.7rem 0.8rem; }
.sim-stat .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.sim-stat .v { font-family: var(--display); font-weight: 600; font-size: 1.5rem; color: var(--ink); line-height: 1.1; margin-top: 2px; }
.sim-stat .v small { font-family: var(--mono); font-size: 0.7rem; font-weight: 400; color: var(--ink-faint); }

/* architecture flow */
.flow-tabs { display: flex; gap: 6px; margin-bottom: 1rem; flex-wrap: wrap; }
.flow-tab { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); background: var(--paper); border: 1px solid var(--rule); border-radius: 5px; padding: 5px 10px; cursor: pointer; transition: all .15s; }
.flow-tab:hover { border-color: var(--accent); }
.flow-tab[aria-selected="true"] { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.flow-svg { width: 100%; height: auto; display: block; }
.flow-node rect { fill: var(--paper); stroke: var(--rule); stroke-width: 1.5; transition: stroke .25s, fill .25s; }
.flow-node text { font-family: var(--mono); font-size: 10px; fill: var(--ink-soft); }
.flow-node.lit rect { stroke: var(--accent); fill: #fff; }
.flow-node.lit text { fill: var(--accent-ink); }
.flow-path { fill: none; stroke: var(--rule); stroke-width: 1.5; }
.flow-path.lit { stroke: var(--accent); stroke-width: 2; }
.flow-packet { fill: var(--accent); opacity: 0; }
.flow-route { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); margin: 0.9rem 0 0; text-align: center; }
.flow-route b { color: var(--accent-ink); }

/* think toggle */
.think-row { display: flex; align-items: center; gap: 0.9rem; margin-bottom: 1rem; }
.think-switch { font-family: var(--mono); font-size: 12px; color: var(--ink-soft); background: var(--paper); border: 1px solid var(--rule); border-radius: 6px; padding: 6px 12px; cursor: pointer; }
.think-switch[data-on="true"] { background: var(--bad); border-color: var(--bad); color: var(--paper); }
.think-switch[data-on="false"] { background: var(--good); border-color: var(--good); color: var(--paper); }
.think-budget { height: 30px; border-radius: 6px; background: var(--paper-deep); overflow: hidden; display: flex; font-family: var(--mono); font-size: 10px; }
.think-seg { display: flex; align-items: center; justify-content: center; color: #fff; white-space: nowrap; overflow: hidden; transition: width .5s cubic-bezier(.3,.7,.3,1); }
.think-seg.reason { background: #7a7268; }
.think-seg.answer { background: var(--good); }
.think-out { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); margin: 0.8rem 0 0; }
.think-out b { color: var(--ink); }
.think-out.empty b { color: var(--bad); }

/* figures / embedded media */
.post-body figure { margin: 2.2rem 0; }
.post-body figure img { width: 100%; height: auto; display: block; border-radius: 8px; border: 1px solid var(--rule); box-shadow: 0 1px 0 rgba(255,255,255,0.5), 0 18px 36px -28px rgba(33,29,21,0.45); }
.post-body figcaption { font-family: var(--mono); font-size: 10.5px; line-height: 1.6; color: var(--ink-faint); margin-top: 0.7rem; text-align: center; letter-spacing: 0.03em; }

/* pipeline stepper (reuses .flow-* styles; this is the conveyor + stage detail) */
.pipe-svg { width: 100%; height: auto; display: block; margin: 0.2rem 0 0.4rem; }
.pipe-node circle { fill: var(--paper); stroke: var(--rule); stroke-width: 1.5; transition: stroke .25s, fill .25s; }
.pipe-node text { font-family: var(--mono); font-size: 11px; fill: var(--ink-faint); }
.pipe-node.lit circle { stroke: var(--accent); fill: #fff; }
.pipe-node.lit text { fill: var(--accent-ink); }
.pipe-track { stroke: var(--rule); stroke-width: 1.5; }
.pipe-detail { font-family: var(--body); font-size: 1rem; line-height: 1.5; color: var(--ink-soft); margin: 0.7rem 0 0; }
.pipe-cost { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.08em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; margin-right: 0.5rem; white-space: nowrap; color: #fff; }
.pipe-cost.free { background: var(--good); }
.pipe-cost.local { background: var(--warn); }
.pipe-cost.strong { background: var(--accent); }

/* who-writes switch (MCP) */
.qh-switch { font-family: var(--mono); font-size: 12px; border-radius: 6px; padding: 6px 12px; cursor: pointer; border: 1px solid var(--rule); transition: all .18s; }
.qh-switch[data-w="gemma"] { background: var(--paper-deep); color: var(--ink); }
.qh-switch[data-w="claude"] { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.qh-field { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; }

/* live counters / funnel bars */
.qh-funnel { margin: 0.4rem 0 0; }
.qh-frow { display: grid; grid-template-columns: 7rem 1fr; align-items: center; gap: 0.8rem; margin-bottom: 0.6rem; }
.qh-flabel { font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-faint); text-align: right; }
.qh-ftrack { background: var(--paper-deep); border-radius: 5px; height: 32px; overflow: hidden; position: relative; }
.qh-fbar { height: 100%; width: 0; border-radius: 5px; display: flex; align-items: center; padding-left: 0.7rem; color: #fff; font-family: var(--mono); font-size: 12px; font-weight: 500; transition: width 1.1s cubic-bezier(.3,.7,.3,1); white-space: nowrap; }

/* ====================================================================
   Footer + responsive
   ==================================================================== */
.foot {
  margin-top: clamp(3rem, 6vw, 5rem); padding-top: 1.4rem; border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.8rem;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--ink-faint);
}
.foot a { color: var(--ink-faint); text-decoration: none; }
.foot a:hover { color: var(--accent); }

@media (max-width: 620px) {
  body { font-size: 18px; }
  :root { --gutter: 3.6rem; }
  .entry-summary { max-width: none; }
  .sim-stats { grid-template-columns: 1fr; }
  /* denser benchmark table so cells wrap less on a phone */
  .post-body table { font-size: 0.72rem; }
  .post-body th, .post-body td { padding: 7px 8px; }
  .widget { padding: 1.2rem 1.1rem 1.3rem; }
  .post-body { overflow-wrap: break-word; }
  .qh-frow { grid-template-columns: 5rem 1fr; gap: 0.5rem; }
  .qh-flabel { font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; }
}