/* ============================================================
   PreviewMD — Galley
   Desk / Sheet / Ink / Slate / Signal Blue / Prism
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --desk: #EEF1F7;
  --sheet: #FFFFFF;
  --ink: #161B2C;
  --prose: #3A4154;
  --slate: #6B7385;
  --slate-deep: #59627A;
  --accent: #477DEE;
  --accent-text: #3566D6;
  --edge: rgba(22, 27, 44, 0.10);
  --edge-soft: rgba(22, 27, 44, 0.07);
  --code-bg: #F3F5FA;
  --sheet-shadow: 0 24px 64px rgba(22, 27, 44, 0.10), 0 2px 8px rgba(22, 27, 44, 0.05);
  --clip-shadow: 0 10px 30px rgba(22, 27, 44, 0.06);
  --tickc: rgba(107, 115, 133, 0.45);
  /* --prism carries white 15px button text, so every stop is an
     AA-darkened (>= 4.5:1 vs #fff) grade of the icon gradient;
     --prism-v is decorative (seam line + grip) and keeps the icon hues */
  --prism: linear-gradient(135deg, #5B49E8 0%, #3566D6 52%, #0F6BB8 100%);
  --prism-v: linear-gradient(180deg, #6757F6 0%, #477DEE 52%, #35B9EA 100%);
  --syn-kw: var(--accent-text);
  --syn-type: #0F6BB8;
  --syn-str: #B34162;
  --syn-enum: #8A4FBF;
  --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --desk: #0C101B;
    --sheet: #151A28;
    --ink: #E9ECF6;
    --prose: #C3C9DA;
    --slate: #8A92A6;
    --slate-deep: #99A1B5;
    --accent: #6E9BF2;
    --accent-text: #8FB3F7;
    --edge: #262D42;
    --edge-soft: #202639;
    --code-bg: #10151F;
    --sheet-shadow: 0 0 0 1px #262D42;
    --clip-shadow: 0 0 0 1px #232A3E;
    --tickc: rgba(138, 146, 166, 0.4);
    --syn-type: #6CB8F2;
    --syn-str: #E58BA4;
    --syn-enum: #C89BF0;
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(71, 125, 238, 0.22); }

img { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: var(--accent-text); }
button { font: inherit; color: inherit; }

h1, h2, h3, p, ul, pre, figure { margin: 0; }

.mono { font-family: var(--font-mono); }

.wrap {
  max-width: 1040px;
  margin-inline: auto;
  padding-inline: 24px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 0;
  border-radius: 10px;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 590;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.btn-prism {
  background: var(--prism);
  box-shadow: 0 8px 20px rgba(71, 125, 238, 0.28);
}
.btn-prism:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(71, 125, 238, 0.36);
}
.btn-prism:active { transform: translateY(0); }

.btn-blue { background: var(--accent-text); }
@media (prefers-color-scheme: dark) {
  .btn-blue { color: #0C101B; }
}
.btn-blue:hover { filter: brightness(1.06); }

/* ============================================================
   Top bar
   ============================================================ */
.topbar { padding: 18px 0; }

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 590;
  font-size: 15px;
  color: var(--ink);
}

.topbar-meta {
  font-size: 12px;
  color: var(--slate-deep);
}

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-top: clamp(40px, 7vw, 72px); }

.cta-block {
  text-align: center;
  margin-bottom: clamp(36px, 5vw, 56px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.cta-block.pre {
  opacity: 0;
  transform: translateY(8px);
}

.kicker {
  font-size: 17px;
  color: var(--prose);
  margin-bottom: 20px;
}

.cta-block .meta { margin-top: 14px; }

.meta {
  font-size: 12.5px;
  color: var(--slate-deep);
}

/* ---------- reading-width ruler ---------- */
.ruler {
  margin-bottom: 8px;
  padding-top: 18px; /* room for the readout bubble */
}

.ruler-track {
  position: relative;
  height: 46px;
}

.ruler-ticks {
  position: absolute;
  inset: 0 0 auto 0;
  height: 9px;
  background-image:
    repeating-linear-gradient(to right, var(--tickc) 0 1px, transparent 1px 26px);
}

/* Stop positions live here rather than in a style attribute so the page needs
   no 'unsafe-inline' in its Content-Security-Policy. Each value is the measure's
   fraction of the 560–1600 px track. */
.ruler-stop[data-measure="560"]  { --x: 0%; }
.ruler-stop[data-measure="800"]  { --x: 23.08%; }
.ruler-stop[data-measure="1120"] { --x: 53.85%; }
.ruler-stop[data-measure="1600"] { --x: 100%; }

.ruler-stop {
  position: absolute;
  top: 11px;
  left: var(--x);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  background: none;
  border: 0;
  padding: 4px 8px; /* >= 24px hit target */
  font-size: 11px;
  font-weight: 500;
  color: var(--slate-deep);
  cursor: pointer;
  white-space: nowrap;
}
.stop-num { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.02em; }
.ruler-stop:hover { color: var(--accent-text); }
.ruler-stop.active { color: var(--accent-text); font-weight: 590; }
.ruler-stop:first-of-type { transform: translateX(-8px); }
.ruler-stop:last-of-type { transform: translateX(calc(-100% + 8px)); }

.ruler-handle {
  position: absolute;
  top: -4px;
  left: calc((var(--measure, 800) - 560) / 1040 * 100%);
  width: 14px;
  height: 16px;
  transform: translateX(-50%);
  background: var(--sheet);
  border: 1.5px solid var(--accent);
  border-radius: 5px;
  cursor: ew-resize;
  touch-action: none;
}
/* invisible >= 24px hit area around the 14x16 visual */
.ruler-handle::before {
  content: "";
  position: absolute;
  inset: -8px;
}
.ruler-handle:hover,
.ruler-handle.dragging { background: var(--accent); }

.ruler-readout {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 7px;
  border-radius: 5px;
  background: var(--ink);
  color: var(--desk);
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}
.ruler-handle:hover .ruler-readout,
.ruler-handle:focus-visible .ruler-readout,
.ruler-handle.dragging .ruler-readout { opacity: 1; }

/* ---------- the window ---------- */
.window {
  background: var(--sheet);
  border: 1px solid var(--edge-soft);
  border-radius: 14px;
  box-shadow: var(--sheet-shadow);
  overflow: hidden;
}

.titlebar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 11px 16px;
}
/* 0.5px transform-scaled hairline */
.titlebar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--edge);
  transform: scaleY(0.5);
  transform-origin: bottom;
}

.lights {
  display: flex;
  gap: 8px;
  flex: 1 0 0;
}
.light {
  width: 12px; height: 12px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.light i {
  font-style: normal;
  font-size: 9px;
  line-height: 1;
  color: rgba(0, 0, 0, 0.55);
  opacity: 0;
  transition: opacity 0.12s ease;
  transform: translateY(-0.5px);
}
.lights:hover i { opacity: 1; }
.l-close { background: #FF5F57; }
.l-min   { background: #FEBC2E; }
.l-zoom  { background: #28C840; }

.segments {
  display: flex;
  gap: 2px;
  padding: 2px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}
.segments button {
  border: 0;
  background: none;
  padding: 3px 13px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--slate-deep);
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}
.segments button:active { transform: scale(0.97); }
.segments button.active {
  background: var(--sheet);
  color: var(--accent-text);
  box-shadow: 0 1px 3px rgba(22, 27, 44, 0.14);
}

.titlebar-spacer { flex: 1 0 0; }

/* ---------- galley body: two clipped layers ---------- */
.galley-body {
  position: relative;
  --seam: 46%;
  background: var(--sheet);
}

.pane {
  background: var(--sheet);
  padding: clamp(24px, 4vw, 44px) clamp(16px, 3vw, 32px);
}

.pane-rendered {
  position: relative;
  clip-path: inset(0 0 0 var(--seam));
}

.pane-source {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--seam)) 0 0);
  overflow: hidden;
}

.doc {
  width: min(100%, calc(var(--measure, 800) * 0.62 * 1px));
  margin-inline: auto;
}

.doc .row { margin-bottom: 26px; }
.doc .row:last-child { margin-bottom: 0; }

/* rendered layer — Newsreader, full Ink */
.doc-rendered {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
}

.doc-h1 {
  font-family: var(--font-serif);
  font-optical-sizing: auto;
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.doc-p { font-size: 17px; line-height: 1.6; }

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
  line-height: 1.45;
}
.doc-table th {
  text-align: left;
  font-weight: 590;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--slate-deep);
  padding: 6px 10px 8px;
  border-bottom: 1.5px solid var(--edge);
}
.doc-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--edge-soft);
}
.doc-table tr:last-child td { border-bottom: 0; }

.doc-tasks {
  list-style: none;
  padding: 0;
}
.doc-tasks li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
}
.checkbox {
  flex: none;
  width: 17px; height: 17px;
  border-radius: 5px;
  border: 1.5px solid var(--slate);
  position: relative;
}
.doc-tasks .done .checkbox {
  background: var(--accent);
  border-color: var(--accent);
}
.doc-tasks .done .checkbox::after {
  content: "";
  position: absolute;
  left: 5px; top: 2px;
  width: 4px; height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
@media (prefers-color-scheme: dark) {
  .doc-tasks .done .checkbox::after { border-color: #0C101B; }
}

/* display math is centered in print anyway */
.doc-math {
  font-size: 20px;
  text-align: center;
}
.doc-math sup { font-size: 0.65em; }

/* what the renderer would actually produce for [text](url): a link */
.doc-link {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* source layer — Geist Mono, muted Slate */
.doc-source { color: var(--slate); }

.src {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}
.mk { color: var(--accent-text); }
.src-link {
  color: var(--accent-text);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.src-target { color: var(--slate-deep); }

/* ---------- seam ---------- */
.seam {
  position: absolute;
  top: 0; bottom: 0;
  left: var(--seam);
  width: 2px;
  margin-left: -1px;
  background: var(--prism-v);
  pointer-events: none;
}

.seam-handle {
  position: absolute;
  top: 50%;
  left: var(--seam);
  transform: translate(-50%, -50%);
  width: 24px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sheet);
  border: 1px solid var(--edge);
  border-radius: 999px;
  box-shadow: 0 2px 10px rgba(22, 27, 44, 0.18);
  cursor: ew-resize;
  touch-action: none;
  transition: box-shadow 0.15s ease;
}
.seam-handle:hover,
.seam-handle.dragging {
  box-shadow: 0 2px 14px rgba(71, 125, 238, 0.42);
}

/* the handle carries the Prism gradient — one of its two brand homes */
.seam-grip {
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: var(--prism-v);
}

.seam-readout {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 7px;
  border-radius: 5px;
  background: var(--ink);
  color: var(--desk);
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}
.seam-handle:hover .seam-readout,
.seam-handle:focus-visible .seam-readout,
.seam-handle.dragging .seam-readout { opacity: 1; }

.hero-hint {
  margin-top: 16px;
  text-align: center;
  font-size: 12px;
  color: var(--slate-deep);
}

/* ============================================================
   Sections
   ============================================================ */
.section { margin-top: clamp(96px, 12vw, 128px); }

.section h2 {
  font-size: 28px;
  font-weight: 590;
  letter-spacing: -0.01em;
}

.section-lede {
  margin-top: 10px;
  max-width: 560px;
  font-size: 16px;
  color: var(--slate-deep);
}

/* ---------- clippings ---------- */
.clippings {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.clipping {
  display: flex;
  flex-direction: column;
  background: var(--sheet);
  border: 1px solid var(--edge-soft);
  border-radius: 12px;
  box-shadow: var(--clip-shadow);
  overflow: hidden;
}

.clip-label {
  padding: 14px 18px 0;
  font-size: 11px;
  font-weight: 590;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
}

.clip-body {
  flex: 1 0 auto;
  padding: 14px 18px 18px;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
}

.clipping figcaption {
  border-top: 1px solid var(--edge-soft);
  padding: 12px 18px 14px;
  color: var(--slate);
}
.clipping figcaption pre {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

/* diagram clipping */
.clip-diagram svg {
  width: 100%;
  height: auto;
  color: var(--accent);
  display: block;
}
.dg-node rect {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}
.dg-app rect { fill: color-mix(in srgb, var(--accent) 10%, transparent); }
.dg-node text {
  fill: var(--ink);
  font-family: var(--font-ui);
  font-size: 13px;
  text-anchor: middle;
}
.dg-edge {
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

/* math clipping */
.clip-math { display: flex; align-items: center; }
.math-display {
  font-family: var(--font-serif);
  font-size: 23px;
  line-height: 1.5;
}
.math-display .int {
  font-size: 34px;
  font-weight: 400;
  line-height: 1;
  vertical-align: -0.12em;
}
.int-limits {
  display: inline-flex;
  flex-direction: column;
  font-size: 11px;
  line-height: 1.25;
  margin: 0 2px 0 1px;
  vertical-align: 2px;
}
.int-limits sup, .int-limits sub { font-size: inherit; line-height: inherit; }
.math-display sup { font-size: 0.62em; }
.sqrt-arg {
  border-top: 1.25px solid currentColor;
  padding-top: 1px;
  font-style: italic;
}

/* code clipping */
.clip-code { position: relative; padding: 14px; }
.clip-code pre {
  background: var(--code-bg);
  border-radius: 9px;
  padding: 14px 16px;
  overflow-x: auto;
}
.clip-code code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--prose);
}
.tok-kw   { color: var(--syn-kw); font-weight: 500; }
.tok-type { color: var(--syn-type); }
.tok-str  { color: var(--syn-str); }
.tok-enum { color: var(--syn-enum); }

.copy-btn {
  position: absolute;
  top: 22px;
  right: 24px;
  border: 1px solid var(--edge);
  background: var(--sheet);
  color: var(--slate-deep);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.12s ease, border-color 0.12s ease;
}
.copy-btn:hover { color: var(--accent-text); border-color: var(--accent); }
.copy-btn.done { color: var(--accent-text); border-color: var(--accent); }

/* alert clipping */
.doc-alert {
  margin-top: 14px;
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  padding: 10px 14px;
  font-size: 15px;
}
.alert-title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 590;
  color: var(--accent-text);
  margin-bottom: 2px;
}
.alert-title::before { content: "ⓘ "; }

/* footnote clipping */
.clip-footnote sup { font-size: 0.7em; color: var(--accent-text); }
.fn-rule {
  border: 0;
  border-top: 1px solid var(--edge);
  width: 72px;
  margin: 14px 0 10px;
}
.fn-text { font-size: 14px; color: var(--slate-deep); }
.fn-text .mono { font-size: 12px; }

/* ---------- reading and editing ---------- */
.reader-list {
  margin-top: 40px;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px 56px;
}
.reader-list li strong {
  display: block;
  font-size: 15px;
  font-weight: 590;
}
.reader-list li span {
  display: block;
  margin-top: 3px;
  font-size: 15px;
  color: var(--slate-deep);
}

/* ---------- colophon ---------- */
.smallcaps {
  font-size: 12px;
  font-weight: 590;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate-deep);
}

.colophon-cols {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.colophon-col h3 {
  font-size: 17px;
  font-weight: 590;
  margin-bottom: 10px;
}
.colophon-col p {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--prose);
}
.never-title {
  margin-top: 18px;
  font-weight: 590;
  color: var(--ink);
  font-size: 14px;
}
.never {
  margin-top: 6px;
  padding: 0;
  list-style: none;
}
.never li {
  font-size: 15px;
  color: var(--prose);
  padding: 2px 0 2px 18px;
  position: relative;
}
.never li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--slate);
}

/* ---------- footer CTA ---------- */
.footer-cta {
  text-align: center;
  padding-bottom: clamp(72px, 10vw, 112px);
}
.footer-cta .kicker { margin-bottom: 22px; }
.footer-cta .meta { margin-top: 16px; }
.assure {
  margin-top: 8px;
  font-size: 14px;
  color: var(--slate-deep);
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--edge-soft);
  padding: 26px 0 40px;
}
.footer-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--slate-deep);
}
.footer-inner .mono { font-size: 12px; }
.footer-inner a {
  color: var(--accent-text);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* ============================================================
   Reading-style specimens — three mini pages, each set with the
   app's real style tokens (renderer.css): page tone, ink, link
   accent and typefaces, with each style's own dark grade below.
   ============================================================ */
.specimens {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 36px;
}

.specimen {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.spec-page {
  flex: 1;
  background: var(--p-page);
  border: 1px solid var(--edge-soft);
  border-radius: 12px;
  box-shadow: var(--clip-shadow);
  padding: 26px 24px 28px;
}

.spec-h {
  margin: 0;
  font-family: var(--p-display);
  font-size: 26px;
  font-weight: 640;
  line-height: 1.15;
  color: var(--p-ink);
}

.spec-p {
  margin: 10px 0 0;
  font-family: var(--p-body);
  font-size: var(--p-size);
  line-height: var(--p-leading);
  color: var(--p-muted);
}

.spec-link {
  color: var(--p-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* token sets lifted from the app's renderer.css, light grade */
.spec-modern {
  --p-page: #ffffff;
  --p-ink: #24262d;
  --p-muted: #565a66;
  --p-link: #3c5dc8;
  --p-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  --p-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  --p-size: 14px;
  --p-leading: 1.72;
}
.spec-classic {
  --p-page: #fcfbf6;
  --p-ink: #28241e;
  --p-muted: #5c554c;
  --p-link: #7e4935;
  --p-display: "New York", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, ui-serif, serif;
  --p-body: "New York", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, ui-serif, serif;
  --p-size: 15.5px;
  --p-leading: 1.7;
}
.spec-editorial {
  --p-page: #fffefd;
  --p-ink: #171a1f;
  --p-muted: #565a60;
  --p-link: #aa3f2b;
  --p-display: "New York", "Iowan Old Style", Charter, Georgia, ui-serif, serif;
  --p-body: "Avenir Next", Avenir, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
  --p-size: 14.5px;
  --p-leading: 1.68;
}
.spec-custom {
  --p-page: #f7f2ff;
  --p-ink: #252038;
  --p-muted: #615878;
  --p-link: #7957d5;
  --p-display: "Avenir Next", Avenir, -apple-system, BlinkMacSystemFont, sans-serif;
  --p-body: "Iowan Old Style", Palatino, Georgia, ui-serif, serif;
  --p-size: 15px;
  --p-leading: 1.72;
}

.preset-swatches {
  display: flex;
  gap: 5px;
  margin-bottom: 18px;
}
.preset-swatches span {
  width: 16px;
  height: 16px;
  border: 1px solid color-mix(in srgb, var(--p-ink) 14%, transparent);
  border-radius: 50%;
  background: var(--p-page);
}
.preset-swatches span:nth-child(2) { background: var(--p-ink); }
.preset-swatches span:nth-child(3) { background: var(--p-muted); }
.preset-swatches span:nth-child(4) { background: var(--p-link); }
.preset-swatches span:nth-child(5) { background: #e0c9ff; }

@media (prefers-color-scheme: dark) {
  .spec-page { border-color: var(--edge); box-shadow: none; }
  .spec-modern {
    --p-page: #1d1e22;
    --p-ink: #ececf1;
    --p-muted: #b5b6c0;
    --p-link: #9db7ff;
  }
  .spec-classic {
    --p-page: #211f1b;
    --p-ink: #eee9df;
    --p-muted: #c0b7aa;
    --p-link: #e2a88b;
  }
  .spec-editorial {
    --p-page: #1c1e21;
    --p-ink: #f0efec;
    --p-muted: #b8b8b5;
    --p-link: #f09a84;
  }
  .spec-custom {
    --p-page: #211d2c;
    --p-ink: #f0eafb;
    --p-muted: #c7bdd8;
    --p-link: #c3a6ff;
  }
}

.spec-cap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 4px 0;
}
.spec-sub {
  font-size: 12.5px;
  color: var(--slate-deep);
}
.spec-stack {
  font-size: 11px;
  color: var(--slate);
  white-space: nowrap;
}

@media (max-width: 900px) {
  .specimens { grid-template-columns: 1fr; }
}

/* ============================================================
   Email updates modal
   ============================================================ */
/* A small native sheet: the app icon and quiet editorial typography
   keep it in the same visual language as the landing page. */
.email-modal {
  width: min(510px, calc(100vw - 32px));
  margin: auto;
  background: var(--sheet);
  color: var(--ink);
  border: 1px solid var(--edge);
  border-radius: 20px;
  box-shadow: 0 36px 100px rgba(22, 27, 44, 0.28);
  padding: 34px 36px 30px;
  overflow: hidden;
}
.email-modal::backdrop {
  background: rgba(22, 27, 44, 0.42);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}
@media (prefers-color-scheme: dark) {
  .email-modal {
    border-color: #30384f;
    box-shadow: 0 36px 100px rgba(0, 0, 0, 0.42);
  }
  .email-modal::backdrop { background: rgba(3, 6, 13, 0.68); }
}
.email-modal[open] { animation: modal-in 0.3s cubic-bezier(0.22, 1, 0.36, 1); }
/* the dialog receives programmatic focus after signup so the status is
   announced; the ring on the whole sheet is noise, not navigation */
.email-modal:focus-visible { outline: none; }
@keyframes modal-in {
  from { opacity: 0; transform: translateY(12px) scale(0.975); }
}

.modal-prism {
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: var(--prism);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0 0 2px;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--slate-deep);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.modal-close:hover {
  background: var(--code-bg);
  color: var(--ink);
}

.modal-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 28px;
  color: var(--slate-deep);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.modal-brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  box-shadow: 0 5px 14px rgba(71, 125, 238, 0.2);
}

.modal-kicker {
  margin-bottom: 9px;
  color: var(--accent-text);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.modal-title {
  max-width: 390px;
  font-family: var(--font-serif);
  font-size: clamp(32px, 7vw, 42px);
  font-weight: 500;
  line-height: 1.03;
  letter-spacing: -0.025em;
}

.modal-description {
  max-width: 410px;
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--prose);
}

.modal-form {
  margin-top: 24px;
}

.modal-field {
  display: flex;
  align-items: stretch;
  padding: 5px;
  background: var(--code-bg);
  border: 1px solid var(--edge);
  border-radius: 12px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.modal-field:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(71, 125, 238, 0.14);
}

.modal-form input {
  min-width: 0;
  flex: 1;
  padding: 10px 11px;
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 8px;
}
.modal-form input::placeholder { color: var(--slate-deep); }
.modal-form input:focus-visible { outline: 0; }

.fn-submit {
  flex: none;
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--prism);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 590;
  box-shadow: 0 5px 14px rgba(71, 125, 238, 0.2);
}
.fn-submit:hover { filter: brightness(1.06); }
.fn-submit:disabled {
  cursor: wait;
  filter: saturate(0.65);
  opacity: 0.72;
}

.fn-dismiss {
  display: block;
  margin: 13px auto 0;
  padding: 3px 8px;
  border: 0;
  background: none;
  color: var(--slate-deep);
  cursor: pointer;
  font-size: 12.5px;
}
.fn-dismiss:hover { color: var(--ink); }

.card-error {
  margin: 10px 0 0;
  text-align: center;
  font-size: 12px;
  color: #B42318;
}
@media (prefers-color-scheme: dark) {
  .card-error { color: #F0857D; }
}

.card-success {
  padding: 30px 0 26px;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 27px;
  color: var(--ink);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .clippings { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .ruler { display: none; }
  .clippings { grid-template-columns: 1fr; }
  .reader-list { grid-template-columns: 1fr; gap: 20px; }
  .colophon-cols { grid-template-columns: 1fr; gap: 36px; }
  .segments button { padding: 3px 9px; font-size: 11px; }
  .src { font-size: 12px; }
  .doc-rendered { font-size: 15px; }
  .doc-p { font-size: 15px; }
  .doc-table { font-size: 14px; }
  .email-modal { padding: 28px 22px 24px; }
  .modal-brand { margin-bottom: 22px; }
  .modal-field { display: block; }
  .fn-submit { width: 100%; margin-top: 4px; }
}

@media (max-width: 400px) {
  .wrap { padding-inline: 16px; }
  .section h2 { font-size: 24px; }
}

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