/* ============================================================
   Whitepaper — shared stylesheet
   Type:  IBM Plex Sans (structure) / Spectral (prose) / IBM Plex Mono (data)
   ============================================================ */

:root {
  color-scheme: light dark;

  --paper:        #F7F6F3;
  --paper-rgb:    247, 246, 243;
  --paper-2:      #F0EFEC;
  --ink:          #14161A;
  --ink-2:        #5C626B;
  --ink-3:        #8A9099;
  --rule:         #E3E4E0;
  --rule-strong:  #C9CBC6;
  --accent:       #1F4D9C;
  --accent-soft:  #EAEFF8;
  --accent-ink:   #1B3A6B;
  --accent-hover: #17407F;
  --code-bg:      #F7F7F4;
  --grid-line:    rgba(20, 22, 26, 0.035);

  --stamp-live:   #1B6E4B;
  --stamp-proto:  #8A5A12;
  --stamp-arch:   #6B6F76;
  --stamp-draft:  #9A3D1F;

  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --serif: "Spectral", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --measure: 68ch;
  --gutter: 24px;
}

/* Dark values apply when the OS prefers dark AND there's no explicit
   override (data-theme="light" wins over the OS), or when data-theme is
   explicitly "dark" regardless of what the OS prefers. Same variable list
   in both blocks — the click-to-override toggle in app.js sets data-theme. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:        #17181A;
    --paper-rgb:    23, 24, 26;
    --paper-2:      #1E2023;
    --ink:          #EDEDE9;
    --ink-2:        #A9ADB3;
    --ink-3:        #797D84;
    --rule:         #2A2C30;
    --rule-strong:  #3C3F44;
    --accent:       #6E9EEA;
    --accent-soft:  #1B2A42;
    --accent-ink:   #BFD4F5;
    --accent-hover: #8FB4EF;
    --code-bg:      #1D1F22;
    --grid-line:    rgba(255, 255, 255, 0.045);

    --stamp-live:   #3FB37E;
    --stamp-proto:  #D69A3D;
    --stamp-arch:   #9BA0A8;
    --stamp-draft:  #E07750;

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper:        #17181A;
  --paper-rgb:    23, 24, 26;
  --paper-2:      #1E2023;
  --ink:          #EDEDE9;
  --ink-2:        #A9ADB3;
  --ink-3:        #797D84;
  --rule:         #2A2C30;
  --rule-strong:  #3C3F44;
  --accent:       #6E9EEA;
  --accent-soft:  #1B2A42;
  --accent-ink:   #BFD4F5;
  --accent-hover: #8FB4EF;
  --code-bg:      #1D1F22;
  --grid-line:    rgba(255, 255, 255, 0.045);

  --stamp-live:   #3FB37E;
  --stamp-proto:  #D69A3D;
  --stamp-arch:   #9BA0A8;
  --stamp-draft:  #E07750;

  color-scheme: dark;
}

:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

img { max-width: 100%; height: auto; display: block; }

/* ---------- Layout shell ---------- */

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.wrap--prose { max-width: calc(var(--measure) + var(--gutter) * 2); }

/* ---------- Masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(var(--paper-rgb), 0.88);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--rule);
}

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
}

.wordmark {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.wordmark:hover { text-decoration: none; }
.wordmark span {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 11px;
  color: var(--ink-3);
  margin-left: 8px;
  letter-spacing: 0.04em;
}

.nav { display: flex; gap: 22px; align-items: baseline; }
.nav a {
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 450;
  color: var(--ink-2);
  letter-spacing: 0.005em;
}
.nav a:hover { color: var(--ink); text-decoration: none; }
.nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 550;
  box-shadow: inset 0 -6px 0 var(--accent-soft);
}

.theme-toggle {
  align-self: center;
  font-size: 15px;
  line-height: 1;
  color: var(--ink-2);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); }

/* ---------- Page intro ---------- */

.intro { padding: 76px 0 40px; border-bottom: 1px solid var(--rule); }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 18px;
}

.intro h1 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
}

.intro p {
  margin: 0;
  max-width: 58ch;
  color: var(--ink-2);
  font-size: 18.5px;
}

/* ---------- Writing index ---------- */

.entries { padding: 8px 0 96px; }

.entry {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}

.entry__meta {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  letter-spacing: 0.03em;
  line-height: 1.6;
  padding-top: 6px;
}

.entry__title {
  font-family: var(--sans);
  font-weight: 550;
  font-size: 21px;
  letter-spacing: -0.017em;
  line-height: 1.32;
  margin: 0 0 8px;
}
.entry__title a { color: var(--ink); }
.entry__title a:hover { color: var(--accent); text-decoration: none; }

.entry__dek { margin: 0 0 12px; color: var(--ink-2); font-size: 17px; }

.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 2px 7px;
}

/* ---------- Article ---------- */

.article { padding: 64px 0 110px; }

.article__head { margin-bottom: 40px; }

.article__head h1 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(28px, 4.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.026em;
  margin: 0 0 14px;
}

.article__dek { color: var(--ink-2); font-size: 19px; margin: 0 0 20px; }

.byline {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}

/* Signature element: the verification strip */
.verify {
  border-left: 2.5px solid var(--accent);
  background: var(--accent-soft);
  padding: 13px 16px;
  margin: 26px 0 34px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--accent-ink);
  word-break: break-word;
}
.verify b { font-weight: 600; letter-spacing: 0.02em; }

/* Auto table of contents */
.toc {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: 20px 24px;
  margin: 0 0 44px;
}
.toc h2 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 12px;
  font-weight: 500;
}
.toc ol { margin: 0; padding-left: 20px; }
.toc li { font-family: var(--sans); font-size: 15px; line-height: 1.85; }
.toc a { color: var(--ink-2); }
.toc a:hover { color: var(--accent); }

/* Prose */
.prose { max-width: var(--measure); }
.prose > *:first-child { margin-top: 0; }
.prose h2 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 24px;
  letter-spacing: -0.02em;
  line-height: 1.28;
  margin: 52px 0 16px;
  padding-top: 6px;
  scroll-margin-top: 80px;
}
.prose h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 18.5px;
  letter-spacing: -0.012em;
  margin: 36px 0 12px;
  scroll-margin-top: 80px;
}
.prose p { margin: 0 0 20px; }
.prose ul, .prose ol { margin: 0 0 20px; padding-left: 26px; }
.prose li { margin-bottom: 8px; }
.prose blockquote {
  margin: 26px 0;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--rule-strong);
  color: var(--ink-2);
  font-style: italic;
}
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 44px 0; }
.prose img { margin: 30px 0 8px; border: 1px solid var(--rule); }
.prose .cap,
.prose figcaption,
.prose img + em {
  display: block;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  margin-bottom: 30px;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.855em;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 1px 5px;
}

.prose pre {
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.62;
  background: var(--code-bg);
  border: 1px solid var(--rule);
  border-left: 2.5px solid var(--rule-strong);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 26px 0;
}
.prose pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* ---------- Builds ---------- */

.builds-sheet {
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 26px 26px;
  border-bottom: 1px solid var(--rule);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 18px;
  padding: 44px 0 100px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  padding: 20px 20px 18px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card::before {
  content: "";
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.card:hover, .card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(20,22,26,0.07);
  border-color: var(--ink-3);
}
.card:hover::before, .card:focus-visible::before { transform: scaleX(1); }

.card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.card__idx {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

.stamp {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  border-radius: 2px;
  padding: 2px 6px;
  white-space: nowrap;
}
.stamp--live { color: var(--stamp-live); }
.stamp--prototype { color: var(--stamp-proto); }
.stamp--archived { color: var(--stamp-arch); }
.stamp--draft { color: var(--stamp-draft); vertical-align: middle; margin-left: 8px; }

.card__stamps { display: flex; align-items: center; gap: 6px; }
.card__stamps .stamp--draft { margin-left: 0; }

/* ---------- Preview bar ---------- */

.previewbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px 14px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 0.01em;
  padding: 7px var(--gutter);
}
.previewbar b { font-weight: 600; }
.previewbar a { color: var(--paper); text-decoration: underline; text-underline-offset: 2px; }
.previewbar a:hover { color: #fff; }

.card__name {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 17.5px;
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin: 0 0 7px;
}

.card__pitch {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0 0 16px;
  flex: 1;
}

.card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 13px;
  border-top: 1px solid var(--rule);
}
.card__stack span {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-3);
  letter-spacing: 0.03em;
}
.card__stack span + span::before { content: "· "; margin-right: 4px; }

/* ---------- Modal ---------- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(20, 22, 26, 0.38);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 20px;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
.overlay[data-open="true"] { opacity: 1; pointer-events: auto; }

.sheet {
  width: 100%;
  max-width: 720px;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(20,22,26,0.18);
  transform: translateY(10px);
  transition: transform .22s ease;
}
.overlay[data-open="true"] .sheet { transform: translateY(0); }

.sheet__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-3);
  position: sticky;
  top: 0;
  border-radius: 4px 4px 0 0;
}

.x {
  border: 1px solid var(--rule-strong);
  background: var(--paper);
  border-radius: 2px;
  width: 26px;
  height: 26px;
  cursor: pointer;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1;
  display: grid;
  place-items: center;
}
.x:hover { color: var(--ink); border-color: var(--ink-3); }

.sheet__body { padding: 28px 32px 34px; }

.sheet__body h2 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.024em;
  line-height: 1.2;
  margin: 0 0 10px;
}

.sheet__pitch { color: var(--ink-2); font-size: 17.5px; margin: 0 0 22px; }

.spec {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 10px 18px;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 24px;
}
.spec dt {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 3px;
}
.spec dd { margin: 0; font-family: var(--sans); font-size: 14.5px; color: var(--ink); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.btn {
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid var(--rule-strong);
  background: var(--paper);
  color: var(--ink);
  border-radius: 3px;
  padding: 9px 16px;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.btn:hover { background: var(--paper-2); border-color: var(--ink-3); text-decoration: none; }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--danger { color: var(--stamp-draft); }
.btn--danger:hover { border-color: var(--stamp-draft); }

/* ---------- Empty state ---------- */

.empty {
  border: 1px dashed var(--rule-strong);
  border-radius: 3px;
  padding: 44px 28px;
  text-align: center;
  color: var(--ink-2);
  background: var(--paper);
}
.empty p { margin: 0 0 6px; }
.empty .hint { font-family: var(--mono); font-size: 12.5px; color: var(--ink-3); }

/* ---------- Footer ---------- */

.foot {
  border-top: 1px solid var(--rule);
  padding: 30px 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.foot a { color: var(--ink-2); }

.footnote { text-align: center; padding: 0 var(--gutter) 40px; }
.footnote a {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  opacity: 0.7;
}
.footnote a:hover { opacity: 1; color: var(--ink-2); }

/* ---------- Admin ---------- */

.admin { padding-bottom: 90px; }

.admin-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 52px 0 28px;
}
.admin-head h1 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 34px);
  letter-spacing: -0.02em;
  margin: 0;
}
.admin-head__links { display: flex; gap: 18px; font-family: var(--sans); font-size: 13.5px; }

.cms-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.cms-title {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}
.cms-title span {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-3);
  margin-left: 8px;
}

.cms-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.cms-row { display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--rule); }
.cms-row__main {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 16px;
  text-align: left;
  background: none;
  border: 0;
  padding: 15px 2px;
  color: var(--ink);
  cursor: pointer;
}
.cms-row__title { font-family: var(--sans); font-size: 15.5px; font-weight: 500; }
.cms-row__main:hover .cms-row__title { color: var(--accent); }
.cms-row__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  white-space: nowrap;
}
.cms-row__order { display: flex; gap: 4px; }

.editor { max-width: 780px; }
.editor-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 20px; }
.editor-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 12px; margin-bottom: 8px; }
.field textarea.is-drop { outline: 2px dashed var(--accent); outline-offset: 2px; }

details.more { border-top: 1px solid var(--rule); padding-top: 14px; margin-top: 4px; }
details.more summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 14px;
}

/* Stays in view while you scroll a long post, so Save is always reachable. */
.editor-bar {
  position: sticky;
  bottom: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 24px;
  padding: 14px 0;
  border-top: 1px solid var(--rule);
  background: rgba(var(--paper-rgb), 0.95);
  backdrop-filter: blur(6px);
}
.editor-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.editor-status { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.editor-status.is-error { color: var(--stamp-draft); }

.linklike {
  background: none;
  border: 0;
  padding: 0;
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--accent);
  cursor: pointer;
}
.linklike:hover { text-decoration: underline; text-underline-offset: 3px; }

.tabs { display: flex; gap: 6px; margin-bottom: 22px; }
.tabs button {
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid var(--rule-strong);
  background: var(--paper);
  color: var(--ink-2);
  border-radius: 3px;
  padding: 7px 15px;
  cursor: pointer;
}
.tabs button[aria-selected="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 6px;
}
.field input,
.field textarea,
.field select {
  width: 100%;
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  padding: 9px 11px;
  line-height: 1.55;
}
.field textarea { font-family: var(--mono); font-size: 13px; resize: vertical; min-height: 90px; }
.note { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-top: 5px; }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.mini {
  border: 1px solid var(--rule-strong);
  background: var(--paper);
  border-radius: 2px;
  font-family: var(--sans);
  font-size: 12px;
  padding: 4px 9px;
  cursor: pointer;
  color: var(--ink-2);
}
.mini:hover { color: var(--ink); border-color: var(--ink-3); }
.mini:disabled { opacity: 0.4; cursor: default; }

.output {
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.55;
  background: var(--code-bg);
  border: 1px solid var(--rule);
  padding: 14px;
  max-height: 460px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

.callout {
  border-left: 2.5px solid var(--accent);
  background: var(--accent-soft);
  padding: 14px 16px;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--accent-ink);
  margin-bottom: 26px;
}
.callout b { font-weight: 600; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 13.5px;
  padding: 10px 18px;
  border-radius: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 200;
}
.toast[data-show="true"] { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  body { font-size: 17px; }
  .intro { padding: 48px 0 32px; }
  .entry { grid-template-columns: 1fr; gap: 10px; }
  .entry__meta { padding-top: 0; }
  .sheet__body { padding: 22px 20px 28px; }
  .spec { grid-template-columns: 1fr; gap: 3px 0; }
  .spec dd { margin-bottom: 10px; }
  .row { grid-template-columns: 1fr; }
  .nav { gap: 16px; }
  .overlay { padding: 16px 12px; }
  .wordmark span { display: none; } /* the role line — it's the Writing page headline anyway */
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}