/* plaintext, typeset carefully */

:root {
  color-scheme: light dark;
  --font-mono: ui-monospace, 'SF Mono', 'SFMono-Regular', Menlo, Monaco,
    'Cascadia Mono', Consolas, 'Liberation Mono', monospace;
  --bg: light-dark(#f7f7f7, #0a0a0b);
  --fg: light-dark(#111, #f2f2f2);
  --fg-muted: light-dark(
    color-mix(in oklab, #111 65%, #f7f7f7),
    color-mix(in oklab, #f2f2f2 55%, #0a0a0b)
  );
  --hairline: light-dark(
    color-mix(in oklab, #111 18%, #f7f7f7),
    color-mix(in oklab, #f2f2f2 12%, #0a0a0b)
  );
  --code-bg: light-dark(
    color-mix(in oklab, #111 10%, #f7f7f7),
    color-mix(in oklab, #f2f2f2 6%, #0a0a0b)
  );
  --accent: light-dark(#b6540a, #ffb454);
  --tok-comment: var(--fg-muted);
  --tok-string: light-dark(#4c6b2c, #9ec27d);
  --tok-keyword: light-dark(#2c5a8c, #83b3e6);
  --tok-punct: light-dark(#666, #8f8f8f);
}

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

:root[data-theme='dark'] {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  display: flex;
  align-items: flex-start;
  min-height: 100svh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.page {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  margin: 0 auto;
  max-width: 700px;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: 24px;
}

@media (min-width: 640px) {
  .page {
    padding: 48px;
  }
}

main {
  flex: 1;
  padding-bottom: 4rem;
}

::selection {
  background: color-mix(in oklab, var(--accent) 25%, var(--bg));
}

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

.theme-toggle {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 10;
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--fg-muted);
  font: inherit;
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  transition: color 120ms ease, background 120ms ease;
}

.theme-toggle:hover {
  color: var(--accent);
  background: var(--code-bg);
}

/* headings: same size as body, rendered like unrendered markdown */

h1,
h2,
h3 {
  font-size: inherit;
  font-weight: 600;
  line-height: inherit;
  margin: 2.75rem 0 1.375rem;
}

h1::before {
  content: '# ' / '';
  color: var(--fg-muted);
  font-weight: 400;
}

h2::before {
  content: '## ' / '';
  color: var(--fg-muted);
  font-weight: 400;
}

h3::before {
  content: '### ' / '';
  color: var(--fg-muted);
  font-weight: 400;
}

p,
ul,
ol {
  margin: 0 0 1.375rem;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  text-decoration-color: color-mix(in oklab, var(--accent) 45%, var(--bg));
  transition: color 100ms ease, text-decoration-color 100ms ease;
}

a:hover {
  text-decoration-color: var(--accent);
}

a.quiet {
  color: var(--fg-muted);
  text-decoration-color: var(--hairline);
}

a.quiet:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

code {
  font-family: inherit;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}

pre.code {
  margin: 2.2rem 0;
  padding: 0.9rem 1.05rem;
  background: var(--code-bg);
  border-radius: 6px;
  font-size: 0.75rem;
  line-height: 1.6;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.bench {
  width: 100%;
  margin: 2.2rem 0;
  border-collapse: collapse;
  font-size: inherit;
}

.bench th,
.bench td {
  padding: 0.5rem 1rem 0.5rem 0;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
  font-weight: 400;
}

.bench th {
  color: var(--fg-muted);
  font-weight: 600;
}

.bench tbody tr:last-child th,
.bench tbody tr:last-child td {
  border-bottom: none;
}

pre.code code {
  padding: 0;
  border-radius: 0;
  background: none;
  white-space: pre;
}

.cm {
  color: var(--tok-comment);
}

.st {
  color: var(--tok-string);
}

.kw {
  color: var(--tok-keyword);
}

.pn {
  color: var(--tok-punct);
}

.note {
  color: var(--fg-muted);
}

.logviz {
  margin: 3rem 0;
  padding: 1.25rem 1.1rem 1.15rem;
  background: var(--code-bg);
  border-radius: 8px;
}

.logviz-keys {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
}

.logviz-chip {
  font: inherit;
  font-size: 0.72rem;
  line-height: 1;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease,
    box-shadow 160ms ease;
}

.logviz-chip:hover {
  background: var(--code-bg);
}

/* the diagram is the one place color is allowed on the site */
.logviz-chip[data-key='c1'] {
  color: var(--tok-keyword);
  border-color: color-mix(in oklab, var(--tok-keyword) 40%, var(--hairline));
}

.logviz-chip[data-key='c2'] {
  color: var(--accent);
  border-color: color-mix(in oklab, var(--accent) 40%, var(--hairline));
}

.logviz-chip[data-key='c3'] {
  color: var(--tok-string);
  border-color: color-mix(in oklab, var(--tok-string) 40%, var(--hairline));
}

/* selection itself is always amber, regardless of the key's own hue */
.logviz-chip.is-active {
  background: var(--code-bg);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.logviz-cmd {
  color: var(--fg-muted);
  margin-bottom: 1rem;
}

.logviz-key {
  color: var(--accent);
}

.logviz-key[data-key='c1'] {
  color: var(--tok-keyword);
}

.logviz-key[data-key='c2'] {
  color: var(--accent);
}

.logviz-key[data-key='c3'] {
  color: var(--tok-string);
}

.logviz-log,
.logviz-out {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.logviz-out {
  min-height: 2.4rem;
}

.frame {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  height: 2.2rem;
  padding: 0 0.6rem;
  white-space: nowrap;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
  color: var(--fg-muted);
  font-size: 0.72rem;
  opacity: 0.9;
  transition: opacity 340ms ease, background 340ms ease, color 340ms ease,
    border-color 340ms ease;
}

/* the diagram is the one place color is allowed on the site */
.frame[data-key='c1'] {
  color: var(--tok-keyword);
  border-color: color-mix(in oklab, var(--tok-keyword) 40%, var(--hairline));
}

.frame[data-key='c2'] {
  color: var(--accent);
  border-color: color-mix(in oklab, var(--accent) 40%, var(--hairline));
}

.frame[data-key='c3'] {
  color: var(--tok-string);
  border-color: color-mix(in oklab, var(--tok-string) 40%, var(--hairline));
}

.frame.lifted {
  color: var(--bg);
  opacity: 1;
}

.frame[data-key='c1'].lifted {
  background: var(--tok-keyword);
  border-color: var(--tok-keyword);
}

.frame[data-key='c2'].lifted {
  background: var(--accent);
  border-color: var(--accent);
}

.frame[data-key='c3'].lifted {
  background: var(--tok-string);
  border-color: var(--tok-string);
}

.frame.dimmed {
  color: var(--fg-muted);
  border-color: var(--hairline);
  opacity: 0.55;
}

.logviz-flow {
  color: var(--fg-muted);
  margin: 1.15rem 0 0.55rem;
}

.logviz-cap {
  margin: 1.15rem 0 0;
  color: var(--fg-muted);
  font-size: 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
  .frame,
  .logviz-chip {
    transition: none;
  }
}

hr {
  border: none;
  margin: 2.75rem 0;
  color: var(--fg-muted);
}

hr::before {
  content: '~~~' / '';
}

/* home */

.wordmark {
  margin: clamp(2rem, 14vh, 7rem) 0 0.25rem;
}

.cursor {
  color: var(--accent);
  animation: blink 1.2s steps(1, end) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.bio {
  margin-bottom: 0;
}

.post-list {
  list-style: none;
  padding: 0;
  color: var(--fg-muted);
}

.post-list li {
  margin-bottom: 0.35rem;
}

/* post */

.crumbs {
  margin: 0 0 3rem;
}

.crumbs.end {
  margin: 3rem 0 0;
}

article h1 {
  margin: 0 0 0.25rem;
}

.subtitle {
  color: var(--fg-muted);
  margin: 0 0 0.6rem;
}

.byline {
  color: var(--fg-muted);
  margin-bottom: 2.75rem;
}

.aside {
  padding-left: 2ch;
  text-indent: -2ch;
  margin: 2.2rem 0;
}

.aside::before {
  content: '> ' / '';
  color: var(--fg-muted);
}

article ul {
  list-style: none;
  padding-left: 2ch;
}

article ul li {
  text-indent: -2ch;
  margin-bottom: 0.35rem;
}

article ul li::before {
  content: '- ' / '';
  color: var(--fg-muted);
}

footer {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  color: var(--fg-muted);
}

@media (min-width: 640px) {
  footer {
    bottom: 48px;
    left: 48px;
    right: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }

  a {
    transition: none;
  }
}

/* streamdb materialization diagram */

.mz {
  margin: 3rem 0;
  padding: 1.25rem 1.1rem 1.15rem;
  background: var(--code-bg);
  border-radius: 8px;
}

.mz-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.mz-label {
  color: var(--fg-muted);
  font-size: 0.72rem;
  margin-bottom: 0.6rem;
}

.mz-events {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mz-ev {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5ch;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
  font-size: 0.72rem;
  opacity: 0.45;
  transition: opacity 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.mz-ev.is-done {
  opacity: 1;
}

.mz-ev.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.mz-op {
  font-weight: 600;
}

.mz-ev[data-op='insert'] .mz-op {
  color: var(--tok-string);
}

.mz-ev[data-op='update'] .mz-op {
  color: var(--accent);
}

.mz-ev[data-op='delete'] .mz-op {
  color: light-dark(#c0392b, #e88b7d);
}

.mz-key {
  color: var(--tok-keyword);
}

.mz-val {
  color: var(--fg-muted);
}

.mz-arrow {
  color: var(--fg-muted);
  font-size: 0.78rem;
  justify-self: center;
  white-space: nowrap;
}

.mz-table {
  border: 1px solid var(--hairline);
  border-radius: 5px;
  overflow: hidden;
  background: var(--bg);
}

.mz-tr {
  display: grid;
  grid-template-columns: 2.2rem 3.6rem 1fr;
  gap: 0.4rem;
  padding: 0.4rem 0.55rem;
  font-size: 0.72rem;
  align-items: baseline;
  opacity: 1;
  filter: none;
  transition: opacity 220ms ease, filter 220ms ease;
}

.mz-tr.is-dim {
  opacity: 0.3;
  filter: grayscale(60%);
}

.mz-th {
  color: var(--fg-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--hairline);
}

.mz-rows {
  min-height: 2.2rem;
}

.mz-rows .mz-tr + .mz-tr {
  border-top: 1px solid var(--hairline);
}

.mz-id {
  color: var(--tok-keyword);
}

.mz-role {
  color: var(--fg-muted);
}

.mz-role[data-agent='main'] {
  color: var(--accent);
}

.mz-role[data-agent='sub-a'] {
  color: var(--tok-keyword);
}

.mz-role[data-agent='sub-b'] {
  color: var(--tok-string);
}

.mz-text {
  color: var(--fg);
  overflow-wrap: anywhere;
}

.mz-empty {
  padding: 0.55rem;
  color: var(--fg-muted);
  font-size: 0.72rem;
}

.mz-query {
  color: var(--fg-muted);
  font-size: 0.72rem;
  margin-bottom: 0.6rem;
}

.mz-filter-val {
  color: var(--tok-string);
}

.mz-filter-key {
  color: inherit;
}

.mz-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.7rem;
}

.mz-chip {
  font: inherit;
  font-size: 0.7rem;
  line-height: 1;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.mz-chip:hover {
  color: var(--fg);
}

.mz-chip.is-active {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.mz-replay {
  display: inline-flex;
  align-items: center;
  gap: 0.4ch;
  margin-top: 1.15rem;
  font: inherit;
  font-size: 0.72rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease;
}

.mz-replay:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.mz-cap {
  margin: 1.15rem 0 0;
  color: var(--fg-muted);
  font-size: 0.75rem;
}

.mz-tr.flash-insert {
  animation: mzInsert 640ms ease;
}

.mz-tr.flash-update {
  animation: mzUpdate 640ms ease;
}

.mz-tr.flash-delete {
  animation: mzDelete 540ms ease forwards;
}

@keyframes mzInsert {
  0% {
    background: color-mix(in oklab, var(--tok-string) 30%, var(--bg));
    opacity: 0.25;
    transform: translateY(-4px);
  }
  100% {
    background: var(--bg);
    opacity: 1;
    transform: none;
  }
}

@keyframes mzUpdate {
  0% {
    background: color-mix(in oklab, var(--accent) 32%, var(--bg));
  }
  100% {
    background: var(--bg);
  }
}

@keyframes mzDelete {
  0% {
    background: color-mix(in oklab, #d9534f 34%, var(--bg));
    opacity: 1;
  }
  100% {
    background: color-mix(in oklab, #d9534f 8%, var(--bg));
    opacity: 0.1;
  }
}

@media (max-width: 560px) {
  .mz-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .mz-arrow {
    transform: rotate(90deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .mz-ev,
  .mz-tr {
    transition: none;
  }

  .mz-tr.flash-insert,
  .mz-tr.flash-update,
  .mz-tr.flash-delete {
    animation: none;
  }
}

/* two producers, one signal */

.stall {
  margin: 2.4rem 0;
  padding: 1.15rem 1.1rem 1.25rem;
  background: var(--code-bg);
  border-radius: 8px;
}

.stall-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.stall-label {
  color: var(--fg-muted);
  font-size: 0.72rem;
  margin-bottom: 0.5rem;
}

.stall-track {
  display: flex;
  gap: 5px;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
}

.stall-frame {
  color: var(--fg-muted);
  font-size: 0.85rem;
  line-height: 1;
}

.stall-tail {
  color: var(--fg-muted);
  animation: stallBlink 1.1s steps(1, end) infinite;
}

.stall-wire-label {
  color: var(--fg-muted);
  font-size: 0.75rem;
  margin: 0 0 1rem;
}

.stall-ask {
  display: inline-block;
  font: inherit;
  font-size: 0.75rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--hairline);
  border-radius: 5px;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease;
}

.stall-ask:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.stall-ask code {
  background: none;
  padding: 0;
}

.stall-answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.9rem;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 320ms ease, opacity 260ms ease, margin-top 320ms ease;
}

.stall.is-revealed .stall-answers {
  max-height: 6rem;
  opacity: 1;
}

.stall-answer {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

.stall-status {
  font-weight: 600;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}

.stall-status.err {
  color: light-dark(#c0392b, #e88b7d);
  background: color-mix(in oklab, #d9534f 16%, var(--bg));
}

.stall-status.ok {
  color: var(--tok-string);
  background: color-mix(in oklab, var(--tok-string) 16%, var(--bg));
}

@keyframes stallBlink {
  50% {
    opacity: 0.15;
  }
}

@media (max-width: 560px) {
  .stall-grid,
  .stall-answers {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stall-tail {
    animation: none;
  }

  .stall-answers {
    transition: none;
  }
}

/* system diagram: expand-only side panel */

.arch-toggle {
  display: block;
  margin: -0.8rem 0 2rem;
  font: inherit;
  font-size: 0.78rem;
  padding: 0;
  border: none;
  background: none;
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 140ms ease;
}

.arch-toggle:hover {
  color: var(--accent);
}

.arch-panel {
  position: sticky;
  top: 0;
  align-self: flex-start;
  flex-shrink: 0;
  width: 0;
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  background: var(--code-bg);
  border-left: 1px solid transparent;
  padding: 1.5rem 0;
}

html.arch-open .arch-panel {
  width: min(58vw, 860px);
  padding: 1.75rem 1.75rem;
  border-left-color: var(--hairline);
}

@media (max-width: 859.98px) {
  .arch-panel {
    position: fixed;
    inset: 0;
    align-self: auto;
    height: 100%;
    z-index: 30;
    transform: translateX(100%);
    transition: transform 300ms ease;
  }

  html.arch-open .arch-panel {
    width: 100%;
    transform: translateX(0);
    border-left: none;
  }
}

.arch-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.arch-close {
  flex-shrink: 0;
  font: inherit;
  font-size: 1.6rem;
  line-height: 1;
  padding: 0.15rem 0.5rem;
  border: none;
  background: none;
  color: var(--fg-muted);
  cursor: pointer;
}

.arch-close:hover {
  color: var(--accent);
}

.arch-label {
  color: var(--fg-muted);
  font-size: 0.78rem;
}

.arch-mermaid svg {
  display: block;
  width: 100% !important;
  height: auto !important;
  max-width: 100%;
  opacity: 0;
  transition: opacity 220ms ease;
}

.arch-mermaid svg.is-ready {
  opacity: 1;
}

.arch-loading {
  color: var(--fg-muted);
  font-size: 0.75rem;
}

.arch-note {
  margin: 1.3rem 0 0;
  color: var(--fg-muted);
  font-size: 0.72rem;
}

@media (prefers-reduced-motion: reduce) {
  body,
  .arch-panel,
  .arch-mermaid svg {
    transition: none;
  }
}