/* a-small-stack.html — essay chrome + interactive workflow board */

/* —— Interactive professional-day workflow —— */
.wf {
  --wf-rule: rgb(var(--ink) / 0.12);
  --wf-rule-soft: rgb(var(--ink) / 0.08);
  --wf-mute: rgb(var(--ink) / 0.38);
  margin: 2.25rem 0 2.5rem;
  max-width: min(100%, 44rem);
  border-top: 1px solid var(--wf-rule);
  border-bottom: 1px solid var(--wf-rule);
  padding: 1.35rem 0 1.15rem;
}
.wf-cap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.45rem 1.25rem;
  margin: 0 0 0.85rem;
  padding: 0 0.05rem;
}
.wf-fig {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgb(var(--accent) / 0.9);
  font-variant-numeric: tabular-nums;
}
.wf-cap-title {
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: rgb(var(--ink) / 0.7);
}
.wf-scope {
  margin: 0 0 1.1rem;
  padding: 0 0.05rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wf-mute);
  line-height: 1.45;
}
.wf-scope em {
  font-style: normal;
  color: rgb(var(--ink) / 0.55);
}

/* Stage filter */
.wf-stages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 1.15rem;
  padding: 0;
  list-style: none;
}
.wf-stage-btn {
  appearance: none;
  margin: 0;
  padding: 0.4rem 0.7rem;
  border: 1px solid rgb(var(--ink) / 0.12);
  background: transparent;
  color: rgb(var(--ink) / 0.62);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
}
.wf-stage-btn:hover {
  color: rgb(var(--ink) / 0.9);
  border-color: rgb(var(--ink) / 0.22);
}
.wf-stage-btn.is-active {
  color: rgb(var(--ink) / 0.95);
  border-color: rgb(var(--accent) / 0.55);
  background: rgb(var(--accent) / 0.07);
}
.wf-stage-btn:focus-visible {
  outline: 2px solid rgb(var(--accent) / 0.45);
  outline-offset: 2px;
}
.wf-stage-btn .wf-stage-n {
  display: inline-block;
  margin-right: 0.35rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgb(var(--accent));
  font-variant-numeric: tabular-nums;
}
.wf-stage-btn.is-active .wf-stage-n { color: rgb(var(--accent)); }

/* Board: columns + graph */
.wf-board {
  position: relative;
  margin: 0 0 1rem;
}
.wf-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  position: relative;
  z-index: 1;
}
@media (min-width: 720px) {
  .wf-cols {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.65rem 0.75rem;
  }
}
.wf-col {
  min-width: 0;
  padding: 0;
  border-top: 1px solid var(--wf-rule-soft);
  transition: opacity 0.18s ease;
}
@media (min-width: 720px) {
  .wf-col {
    border-top: 0;
    padding: 0 0.15rem;
  }
}
.wf-col.is-dim {
  opacity: 0.28;
  pointer-events: none;
}
.wf-col-head {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-bottom: 0.7rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--wf-rule-soft);
}
.wf-col-num {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: rgb(var(--accent));
  font-variant-numeric: tabular-nums;
}
.wf-col-name {
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: rgb(var(--ink) / 0.9);
  line-height: 1.2;
}
.wf-col-job {
  font-size: 0.6875rem;
  color: rgb(var(--ink) / 0.42);
  line-height: 1.3;
}
.wf-col-room {
  margin-top: 0.15rem;
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgb(var(--ink) / 0.3);
}

/* App nodes */
.wf-apps {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.wf-app {
  appearance: none;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.55rem;
  align-items: center;
  width: 100%;
  margin: 0;
  padding: 0.45rem 0.5rem;
  border: 1px solid rgb(var(--ink) / 0.1);
  background: rgb(var(--canvas));
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s, opacity 0.15s, box-shadow 0.12s;
}
.wf-app:hover {
  border-color: rgb(var(--ink) / 0.22);
  background: rgb(var(--ink) / 0.02);
}
.wf-app.is-active {
  border-color: rgb(var(--accent) / 0.55);
  background: rgb(var(--accent) / 0.06);
  box-shadow: 0 0 0 1px rgb(var(--accent) / 0.12);
}
.wf-app.is-related {
  border-color: rgb(var(--accent) / 0.35);
  background: rgb(var(--accent) / 0.04);
}
.wf-app.is-dim {
  opacity: 0.22;
}
.wf-app:focus-visible {
  outline: 2px solid rgb(var(--accent) / 0.45);
  outline-offset: 2px;
}
.wf-app-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid rgb(var(--ink) / 0.1);
  background: rgb(var(--ink) / 0.02);
  color: rgb(var(--ink) / 0.78);
  flex-shrink: 0;
}
.wf-app.is-active .wf-app-icon,
.wf-app.is-related .wf-app-icon {
  color: rgb(var(--accent));
  border-color: rgb(var(--accent) / 0.35);
  background: rgb(var(--accent) / 0.08);
}
.wf-app-icon svg {
  display: block;
  width: 1.05rem;
  height: 1.05rem;
}
.wf-app-text { min-width: 0; }
.wf-app-name {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: rgb(var(--ink) / 0.9);
}
.wf-app-role {
  display: block;
  margin-top: 0.12rem;
  font-size: 0.625rem;
  line-height: 1.3;
  color: rgb(var(--ink) / 0.42);
}

/* SVG edge layer (desktop) */
.wf-edges {
  display: none;
  pointer-events: none;
}
@media (min-width: 720px) {
  .wf-edges {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: visible;
  }
}
.wf-edge-path {
  fill: none;
  stroke: rgb(var(--ink) / 0.14);
  stroke-width: 1.25;
  stroke-linecap: round;
  transition: stroke 0.15s, stroke-width 0.15s, opacity 0.15s;
}
.wf-edge-path.is-active {
  stroke: rgb(var(--accent) / 0.75);
  stroke-width: 1.75;
}
.wf-edge-path.is-dim {
  opacity: 0.12;
}
.wf-edge-label {
  font-size: 9px;
  letter-spacing: 0.02em;
  fill: rgb(var(--ink) / 0.42);
  transition: fill 0.15s, opacity 0.15s;
}
.wf-edge-label.is-active { fill: rgb(var(--accent) / 0.95); }
.wf-edge-label.is-dim { opacity: 0.15; }

/* Inspector */
.wf-inspect {
  margin-top: 0.25rem;
  padding: 1rem 0 0.15rem;
  border-top: 1px solid var(--wf-rule);
  min-height: 7.5rem;
}
.wf-inspect-empty {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: rgb(var(--ink) / 0.48);
}
.wf-inspect-empty kbd {
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgb(var(--ink) / 0.62);
  border-bottom: 1px solid rgb(var(--ink) / 0.15);
}
.wf-inspect-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}
.wf-inspect-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgb(var(--accent) / 0.35);
  background: rgb(var(--accent) / 0.07);
  color: rgb(var(--accent));
  flex-shrink: 0;
}
.wf-inspect-icon svg {
  width: 1.2rem;
  height: 1.2rem;
}
.wf-inspect-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: rgb(var(--ink) / 0.92);
  line-height: 1.2;
}
.wf-inspect-meta {
  margin: 0.25rem 0 0;
  font-size: 0.75rem;
  color: rgb(var(--ink) / 0.45);
  line-height: 1.4;
}
.wf-inspect-meta a {
  color: var(--link, rgb(var(--accent)));
  border-bottom: 1px solid rgb(var(--ink) / 0.12);
  text-decoration: none;
}
.wf-inspect-meta a:hover {
  border-bottom-color: rgb(var(--accent) / 0.45);
}
.wf-inspect-body {
  margin: 0 0 0.85rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: rgb(var(--ink) / 0.72);
  max-width: 36rem;
}
.wf-flows {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem 1.5rem;
}
@media (min-width: 560px) {
  .wf-flows { grid-template-columns: 1fr 1fr; }
}
.wf-flows-kicker {
  margin: 0 0 0.4rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgb(var(--accent) / 0.9);
}
.wf-flows ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.wf-flows li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.2rem 0.55rem;
  align-items: baseline;
  padding: 0.4rem 0;
  border-top: 1px solid rgb(var(--ink) / 0.06);
  font-size: 0.8125rem;
  line-height: 1.4;
  color: rgb(var(--ink) / 0.7);
}
.wf-flows li:first-child { border-top: 0; padding-top: 0.1rem; }
.wf-flow-dir {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgb(var(--ink) / 0.35);
  font-variant-numeric: tabular-nums;
}
.wf-flow-body {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  min-width: 0;
}
.wf-flow-app {
  font-weight: 500;
  color: rgb(var(--ink) / 0.88);
}
.wf-flow-label {
  display: block;
  font-size: 0.75rem;
  line-height: 1.35;
  color: rgb(var(--ink) / 0.45);
}
.wf-flows-empty {
  margin: 0;
  font-size: 0.8125rem;
  color: rgb(var(--ink) / 0.4);
}

.wf-hint {
  margin: 0.85rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--wf-rule-soft);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgb(var(--ink) / 0.32);
  line-height: 1.45;
}

/* —— Prose (site essay rhythm) —— */
.stack-note .prose-essay {
  max-width: var(--measure, 34rem);
}
.stack-note .prose-essay h2 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: rgb(var(--ink) / 0.92);
  scroll-margin-top: 5rem;
}
.stack-note .prose-essay h2:first-of-type { margin-top: 1.75rem; }
.stack-note .prose-essay p {
  margin: 0 0 1.05rem;
  font-size: inherit;
  line-height: 1.7;
  color: var(--text-secondary, rgb(var(--ink) / 0.68));
}
.stack-note .prose-essay blockquote {
  margin: 0 0 1.75rem;
  padding: 0 0 0 1rem;
  border-left: 2px solid rgb(var(--accent) / 0.45);
  font-size: 1.05rem;
  line-height: 1.55;
  color: rgb(var(--ink) / 0.85);
}
.stack-note .prose-essay strong {
  color: rgb(var(--ink) / 0.9);
  font-weight: 550;
}
.stack-note .prose-essay em { font-style: italic; }
.stack-note .prose-essay a {
  color: var(--link, rgb(var(--accent)));
  text-decoration: none;
  border-bottom: 1px solid rgb(var(--ink) / 0.12);
}
.stack-note .prose-essay a:hover {
  color: var(--link-hover, rgb(var(--accent)));
  border-bottom-color: rgb(var(--accent) / 0.45);
}
.stack-note .prose-essay sup {
  font-size: 0.65em;
  line-height: 0;
  vertical-align: super;
}
.stack-note .prose-essay sup a {
  border-bottom: 0;
  margin-left: 0.05em;
}

/* Reading list */
.kit-refs {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgb(var(--ink) / 0.1);
  max-width: var(--measure, 34rem);
  counter-reset: kit-ref;
}
.kit-refs li {
  counter-increment: kit-ref;
  position: relative;
  padding: 0.7rem 0 0.7rem 1.75rem;
  border-bottom: 1px solid rgb(var(--ink) / 0.07);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: rgb(var(--ink) / 0.58);
}
.kit-refs li::before {
  content: counter(kit-ref);
  position: absolute;
  left: 0;
  top: 0.75rem;
  font-size: 0.625rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: rgb(var(--ink) / 0.32);
}
.kit-refs em {
  font-style: italic;
  color: rgb(var(--ink) / 0.75);
}
.kit-refs a {
  color: var(--link, rgb(var(--accent)));
  text-decoration: none;
  border-bottom: 0;
  margin-left: 0.2rem;
}
.kit-refs a:hover {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* Board sits outside prose measure */
.stack-note > .wf {
  max-width: min(100%, 46rem);
}