/**
 * Multi-sharded transactions deep dive — article chrome.
 * Extends common/styles.css; scoped under .mst-article.
 */

.mst-article {
  --mst-ink: #0f172a;
  --mst-muted: #475569;
  --mst-line: #e2e8f0;
  --mst-panel: #ffffff;
  --mst-wash: #f1f5f9;
  --mst-accent: #0e7490;
  --mst-accent-soft: #ecfeff;
  --mst-shard-a: #0369a1;
  --mst-shard-b: #0f766e;
  --mst-warn: #b45309;
  --mst-ok: #047857;
  --mst-danger: #b91c1c;
  --mst-toc-w: 15.5rem;
  color: var(--mst-ink);
}

.mst-article .site-home-bar {
  margin-bottom: 0;
}

.mst-layout {
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

@media (min-width: 1100px) {
  .mst-layout {
    margin-right: calc(var(--mst-toc-w) + 3.5rem);
    margin-left: max(1.5rem, calc((100vw - 46rem - var(--mst-toc-w) - 4rem) / 2));
    padding-top: 2rem;
  }
}

/* —— Sticky floating TOC (top-right) —— */
.mst-toc {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 40;
  width: var(--mst-toc-w);
  max-height: calc(100vh - 2rem);
  overflow: auto;
  padding: 0.85rem 0.9rem 1rem;
  background: color-mix(in srgb, var(--mst-panel) 92%, transparent);
  border: 1px solid var(--mst-line);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: calc(0.78rem + 2pt);
  line-height: 1.35;
}

.mst-toc[hidden] {
  display: none !important;
}

.mst-toc-title {
  font-size: calc(0.68rem + 2pt);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mst-muted);
  margin: 0 0 0.55rem;
}

.mst-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mst-toc a {
  display: block;
  padding: 0.28rem 0.4rem;
  margin: 0.05rem 0;
  color: var(--mst-muted);
  text-decoration: none;
  border-radius: 5px;
  border-left: 2px solid transparent;
}

.mst-toc a:hover {
  color: var(--mst-ink);
  background: var(--mst-wash);
}

.mst-toc a.is-active {
  color: var(--mst-accent);
  border-left-color: var(--mst-accent);
  background: var(--mst-accent-soft);
  font-weight: 600;
}

.mst-toc-toggle {
  display: none;
  position: fixed;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 45;
  border: 1px solid var(--mst-line);
  background: var(--mst-panel);
  color: var(--mst-ink);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font-size: calc(0.8rem + 2pt);
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.1);
}

@media (max-width: 1099px) {
  .mst-toc-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
  }

  .mst-toc {
    display: none;
    top: 3.25rem;
    right: 0.75rem;
    left: auto;
    width: min(18rem, calc(100vw - 1.5rem));
  }

  .mst-toc.is-open {
    display: block;
  }
}

/* —— Article chrome —— */
.mst-hero {
  padding: 1.75rem 0 1.25rem;
  border-bottom: 1px solid var(--mst-line);
  margin-bottom: 2rem;
}

.mst-kicker {
  display: inline-block;
  font-size: calc(0.72rem + 2pt);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mst-accent);
  margin-bottom: 0.65rem;
}

.mst-hero h1 {
  font-size: clamp(calc(1.75rem + 2pt), 3.2vw, calc(2.35rem + 2pt));
  line-height: 1.2;
  color: var(--mst-ink);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.mst-lede {
  font-size: calc(1.08rem + 2pt);
  line-height: 1.55;
  color: var(--mst-muted);
  margin: 0 0 1rem;
  max-width: 40rem;
}

.mst-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: calc(0.82rem + 2pt);
  color: var(--mst-muted);
}

.mst-article section {
  margin: 0 0 2.75rem;
  scroll-margin-top: 1.25rem;
}

.mst-article h2 {
  font-size: calc(1.35rem + 2pt);
  color: var(--mst-ink);
  margin: 0 0 0.85rem;
  letter-spacing: -0.015em;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--mst-line);
}

.mst-article h3 {
  font-size: calc(1.05rem + 2pt);
  color: var(--mst-ink);
  margin: 1.5rem 0 0.55rem;
}

.mst-article p {
  margin: 0 0 0.95rem;
  line-height: 1.65;
  color: var(--mst-ink);
  font-size: calc(0.98rem + 2pt);
}

.mst-article p:last-child {
  margin-bottom: 0;
}

.mst-article ul,
.mst-article ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  color: var(--mst-ink);
}

.mst-article li {
  margin: 0.35rem 0;
  line-height: 1.55;
  font-size: calc(0.96rem + 2pt);
}

.mst-article strong {
  font-weight: 650;
}

.mst-callout {
  margin: 1.15rem 0;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--mst-line);
  background: var(--mst-wash);
}

.mst-callout--accent {
  background: var(--mst-accent-soft);
  border-color: color-mix(in srgb, var(--mst-accent) 28%, var(--mst-line));
}

.mst-callout--warn {
  background: #fffbeb;
  border-color: #fde68a;
}

.mst-callout p {
  margin: 0;
  font-size: calc(0.92rem + 2pt);
}

.mst-callout strong.label {
  display: block;
  font-size: calc(0.72rem + 2pt);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--mst-muted);
  margin-bottom: 0.35rem;
}

/* —— Tables —— */
.mst-table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.25rem;
  border: 1px solid var(--mst-line);
  border-radius: 8px;
  background: var(--mst-panel);
}

.mst-table {
  width: 100%;
  border-collapse: collapse;
  font-size: calc(0.86rem + 2pt);
}

.mst-table th,
.mst-table td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--mst-line);
}

.mst-table th {
  background: var(--mst-wash);
  font-weight: 650;
  color: var(--mst-ink);
  white-space: nowrap;
}

.mst-table tr:last-child td {
  border-bottom: none;
}

.mst-table code {
  font-size: calc(0.82em + 2pt);
}

/* —— Pipeline chart —— */
.mst-pipeline {
  display: grid;
  gap: 0.45rem;
  margin: 1.1rem 0 1.35rem;
}

.mst-pipe-row {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0.65rem;
  align-items: stretch;
}

@media (max-width: 560px) {
  .mst-pipe-row {
    grid-template-columns: 1fr;
  }
}

.mst-pipe-label {
  font-size: calc(0.72rem + 2pt);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mst-muted);
  display: flex;
  align-items: center;
}

.mst-pipe-track {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.mst-pipe-step {
  flex: 1 1 5.5rem;
  min-width: 5rem;
  padding: 0.55rem 0.6rem;
  border-radius: 7px;
  background: var(--mst-wash);
  border: 1px solid var(--mst-line);
  font-size: calc(0.78rem + 2pt);
  line-height: 1.35;
}

.mst-pipe-step strong {
  display: block;
  font-size: calc(0.72rem + 2pt);
  margin-bottom: 0.15rem;
  color: var(--mst-accent);
}

.mst-pipe-step--a {
  background: color-mix(in srgb, var(--mst-shard-a) 10%, white);
  border-color: color-mix(in srgb, var(--mst-shard-a) 28%, var(--mst-line));
}

.mst-pipe-step--b {
  background: color-mix(in srgb, var(--mst-shard-b) 10%, white);
  border-color: color-mix(in srgb, var(--mst-shard-b) 28%, var(--mst-line));
}

.mst-pipe-step--both {
  background: linear-gradient(
    105deg,
    color-mix(in srgb, var(--mst-shard-a) 12%, white),
    color-mix(in srgb, var(--mst-shard-b) 12%, white)
  );
}

/* —— Sequence / swimlane —— */
.mst-swim {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin: 1rem 0 1.25rem;
}

@media (max-width: 640px) {
  .mst-swim {
    grid-template-columns: 1fr;
  }
}

.mst-lane {
  border: 1px solid var(--mst-line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--mst-panel);
}

.mst-lane-head {
  padding: 0.5rem 0.75rem;
  font-size: calc(0.78rem + 2pt);
  font-weight: 700;
  color: #fff;
}

.mst-lane--a .mst-lane-head {
  background: var(--mst-shard-a);
}

.mst-lane--b .mst-lane-head {
  background: var(--mst-shard-b);
}

.mst-lane ol {
  margin: 0;
  padding: 0.65rem 0.75rem 0.75rem 1.5rem;
  font-size: calc(0.84rem + 2pt);
}

.mst-lane li {
  margin: 0.4rem 0;
}

/* —— Dual-scale chart (single vs sharded) —— */
.mst-bars {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0;
  padding: 0.9rem 1rem;
  border: 1px solid var(--mst-line);
  border-radius: 8px;
  background: var(--mst-panel);
}

.mst-bar-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 0.55rem;
  align-items: center;
  font-size: calc(0.8rem + 2pt);
}

.mst-bar-track {
  height: 0.7rem;
  background: var(--mst-wash);
  border-radius: 999px;
  overflow: hidden;
}

.mst-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--mst-accent);
}

.mst-bar-fill--muted {
  background: #94a3b8;
}

.mst-bar-val {
  color: var(--mst-muted);
  font-variant-numeric: tabular-nums;
  min-width: 3.5rem;
  text-align: right;
}

.mst-meta a {
  color: var(--mst-accent);
  font-weight: 600;
  text-decoration: none;
}

.mst-meta a:hover {
  text-decoration: underline;
}

.mst-caption a {
  color: var(--mst-accent);
}

/* —— Code —— */
.mst-code {
  margin: 1rem 0 1.2rem;
  border: 1px solid var(--mst-line);
  border-radius: 8px;
  overflow: hidden;
  background: #0b1220;
}

.mst-code-caption {
  padding: 0.45rem 0.75rem;
  font-size: calc(0.72rem + 2pt);
  color: #94a3b8;
  background: #111827;
  border-bottom: 1px solid #1f2937;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.mst-code pre {
  margin: 0;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-size: calc(0.78rem + 2pt);
  line-height: 1.5;
  color: #e2e8f0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.mst-code code {
  font-family: inherit;
  background: none;
  padding: 0;
  color: inherit;
}

.mst-code .cmt {
  color: #64748b;
}

.mst-article :not(pre) > code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: calc(0.86em + 2pt);
  background: var(--mst-wash);
  padding: 0.08em 0.35em;
  border-radius: 4px;
  color: #0f172a;
}

/* —— Status chips —— */
.mst-chip {
  display: inline-block;
  font-size: calc(0.7rem + 2pt);
  font-weight: 650;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  vertical-align: middle;
}

.mst-chip--ok {
  background: #d1fae5;
  color: var(--mst-ok);
}

.mst-chip--fail {
  background: #fee2e2;
  color: var(--mst-danger);
}

.mst-chip--wait {
  background: #ffedd5;
  color: var(--mst-warn);
}

.mst-footer-nav {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--mst-line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: calc(0.9rem + 2pt);
}

.mst-footer-nav a {
  color: var(--mst-accent);
  text-decoration: none;
  font-weight: 600;
}

.mst-footer-nav a:hover {
  text-decoration: underline;
}