/* ---------- Case study article — extends style.css's tokens/nav/footer ---------- */

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-faint);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
  transition: color 0.15s ease;
}
.back-link:hover {
  color: var(--accent-2);
}

/* ---------- Hero ---------- */
.article-hero {
  max-width: 720px;
}
.article-hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 20%, var(--accent) 70%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.article-dek {
  color: var(--ink-dim);
  font-size: 1.08rem;
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: 22px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  color: var(--ink-faint);
}
.article-meta strong {
  color: var(--ink-dim);
  font-weight: 600;
  margin-right: 4px;
}

/* ---------- Body prose ---------- */
.article-body {
  max-width: 680px;
}
.article-body > p {
  color: var(--ink-dim);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 18px;
  max-width: 640px;
}
.article-body > p.lead {
  color: var(--ink);
  font-size: 1.08rem;
}
.article-body .section {
  margin: 48px 0 0;
}
.article-body .section h2 {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.article-body .section > p {
  color: var(--ink-dim);
  font-size: 0.97rem;
  line-height: 1.75;
  margin-bottom: 16px;
  max-width: 640px;
}
.article-body h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}
.article-body strong {
  color: var(--ink);
  font-weight: 600;
}
.article-body em {
  color: var(--accent-2);
  font-style: normal;
}
.article-body code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.86em;
  background: rgba(124, 156, 255, 0.1);
  border: 1px solid var(--line);
  color: var(--accent-2);
  padding: 0.1em 0.42em;
  border-radius: 4px;
}
.decision-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.decision-list li {
  color: var(--ink-dim);
  font-size: 0.95rem;
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
  max-width: 640px;
}
.decision-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
}

/* ---------- Cascade steps ---------- */
.cascade {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 22px 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.cascade-step {
  flex: 1 1 9rem;
  background: var(--bg-card);
  padding: 16px 18px;
}
.cascade-step + .cascade-step {
  border-left: 1px solid var(--line);
}
.step-label {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 6px;
}
.step-name {
  display: block;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--ink);
  margin-bottom: 5px;
}
.step-desc {
  font-size: 0.83rem;
  color: var(--ink-faint);
  line-height: 1.55;
}
.cascade-arrow {
  display: none;
}
@media (max-width: 640px) {
  .cascade { flex-direction: column; }
  .cascade-step + .cascade-step { border-left: none; border-top: 1px solid var(--line); }
}

/* ---------- Callout ---------- */
.callout {
  background: var(--accent-soft);
  border: 1px solid rgba(124, 156, 255, 0.25);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 22px 0;
  max-width: 640px;
}
.callout-tag {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.callout p {
  color: var(--ink-dim) !important;
  font-size: 0.93rem !important;
  margin: 0 !important;
}

/* ---------- Stat / ledger lines ---------- */
.stat-lines {
  max-width: 640px;
  margin: 20px 0 22px;
  border-top: 1px solid var(--line);
}
.stat-line {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.stat-label {
  color: var(--ink-faint);
  font-size: 0.88rem;
  flex-shrink: 0;
}
.stat-leader {
  flex: 1;
  border-bottom: 1px dotted var(--line);
  margin-bottom: 4px;
}
.stat-value {
  font-family: "JetBrains Mono", monospace;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
  white-space: nowrap;
}
.stat-value.good { color: var(--accent-2); }
.stat-value.accent { color: var(--accent-4); }

/* ---------- Bug list ---------- */
.bug-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 22px 0;
  border-radius: 14px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.bug-item {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
}
.bug-item + .bug-item {
  border-top: 1px solid var(--line);
}
.bug-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--accent-3);
  padding-top: 2px;
}
.bug-title {
  display: block;
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--ink);
  margin-bottom: 4px;
}
.bug-item p {
  color: var(--ink-faint);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}
@media (max-width: 560px) {
  .bug-item { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- Demo panel ---------- */
.demo-panel {
  max-width: 640px;
  background: linear-gradient(160deg, rgba(124, 156, 255, 0.1), rgba(124, 240, 210, 0.05));
  border: 1px solid rgba(124, 240, 210, 0.25);
  border-radius: 16px;
  padding: 26px 28px 28px;
  margin: 22px 0;
}
.demo-tag {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 10px;
}
.demo-panel h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.demo-panel p {
  color: var(--ink-dim);
  font-size: 0.94rem;
  margin-bottom: 10px;
}
.demo-panel ul {
  list-style: none;
  padding: 0;
  margin: 14px 0 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.demo-panel li {
  color: var(--ink-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  padding-left: 18px;
  position: relative;
}
.demo-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
}

/* ---------- Closing CTA row ---------- */
.article-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

::selection {
  background: var(--accent);
  color: var(--bg);
}