/* LeadOcto docs article - ported from design bundle article.css.
 *
 * The prototype wrapped articles in a logged-in app shell; on the
 * public site that is dropped and the article uses the shared topnav +
 * footer (lo-chrome.css). The two-column body + sticky table-of-
 * contents layout, callouts, code blocks, steps, "was this helpful"
 * and related cards are ported verbatim. */

.article-page { background: var(--surface-sunken); }

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 248px;
  gap: 64px;
  max-width: 1100px;
  padding: 56px var(--s7) 96px;
  margin: 0 auto;
}

/* Breadcrumb */
.crumbs {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 20px;
}
.crumbs a { color: var(--ink-700); }
.crumbs a:hover { color: var(--ink); }
.crumbs .sep { color: var(--ink-300); }
.crumbs b { color: var(--ink); font-weight: 700; }

/* Article header */
.art-head {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--hairline);
}
.art-head .cat-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--turquoise-700);
  margin-bottom: 16px;
}
.art-head .cat-tag::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--turquoise-500);
}
.art-head h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.05; letter-spacing: -0.025em;
  font-weight: 700; margin: 0 0 16px; text-wrap: balance; color: var(--ink);
}
.art-head .deck {
  margin: 0 0 24px; color: var(--ink-700);
  font-size: 18px; line-height: 1.55; max-width: 56ch; text-wrap: balance;
}
.art-meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.06em; color: var(--ink-500);
}
.art-meta .sep { width: 4px; height: 4px; background: var(--ink-300); border-radius: 50%; }
.art-meta .author { display: inline-flex; align-items: center; gap: 8px; }
.art-meta .author .avatar {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, var(--turquoise-300), var(--turquoise-700));
  overflow: hidden;
}
.art-meta .author .avatar img { width: 100%; height: 100%; object-fit: cover; }
.art-meta .author b {
  color: var(--ink); font-weight: 700;
  text-transform: none; letter-spacing: 0;
  font-family: var(--font-sans); font-size: 13px;
}

/* Article body */
.art-body { font: 400 16px/1.65 var(--font-sans); color: var(--ink-700); }
.art-body p { margin: 0 0 16px; }
.art-body p:first-child { margin-top: 0; }
.art-body strong, .art-body b { color: var(--ink); font-weight: 600; }
.art-body a { color: var(--turquoise-700); border-bottom: 1px solid var(--turquoise-300); }
.art-body a:hover { color: var(--turquoise-900); border-bottom-color: var(--turquoise-700); }

.art-body h2 {
  font-size: 28px; line-height: 1.15; letter-spacing: -0.02em;
  font-weight: 600; margin: 56px 0 16px; color: var(--ink);
  text-wrap: balance; scroll-margin-top: 88px;
}
.art-body h2:first-child { margin-top: 0; }
.art-body h3 {
  font-size: 19px; line-height: 1.3; letter-spacing: -0.01em;
  font-weight: 600; margin: 32px 0 12px; color: var(--ink);
}
.art-body ul, .art-body ol { margin: 0 0 20px; padding-left: 22px; }
.art-body li { margin-bottom: 6px; }
.art-body li::marker { color: var(--turquoise-700); }
.art-body hr { border: 0; border-top: 1px solid var(--hairline); margin: 32px 0; }

.art-body code {
  font-family: var(--font-mono); font-size: 13.5px;
  background: var(--turquoise-50); color: var(--turquoise-900);
  padding: 1px 6px; border-radius: 4px; letter-spacing: 0;
}
.art-body kbd {
  font-family: var(--font-mono); font-size: 12.5px;
  background: var(--ink-50); border: 1px solid var(--hairline);
  color: var(--ink); padding: 2px 6px; border-radius: 4px;
}
.art-body pre {
  background: var(--ink); color: #d6ece8;
  border-radius: var(--r-sm);
  padding: 18px 20px;
  font: 400 13px/1.6 var(--font-mono);
  letter-spacing: 0; overflow-x: auto;
  margin: 0 0 20px; position: relative;
}
.art-body pre .tk { color: #7DD6CD; }
.art-body pre .at { color: #C9B994; }
.art-body pre .st { color: #E4E4DE; }
.art-body pre .cm { color: #8a9094; }
.art-body pre code { background: transparent; color: inherit; padding: 0; }

/* Step list */
.steps {
  list-style: none; margin: 0 0 24px; padding: 0;
  display: flex; flex-direction: column; gap: 16px;
  counter-reset: step;
}
.steps li {
  display: grid; grid-template-columns: 36px 1fr; gap: 16px;
  padding: 20px 24px;
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  font: 700 13px/1 var(--font-mono); margin-top: 2px;
}
.steps li .step-title {
  font: 600 16px/1.3 var(--font-sans); color: var(--ink);
  margin-bottom: 6px; display: block;
}
.steps li > div > p:last-child { margin-bottom: 0; }

/* Callouts */
.callout-box {
  background: var(--turquoise-50);
  border: 1px solid var(--turquoise-100);
  border-left: 3px solid var(--turquoise-500);
  border-radius: var(--r-sm);
  padding: 16px 22px; margin: 0 0 24px;
}
.callout-box h4 { margin: 0 0 4px; font: 600 14px/1.3 var(--font-sans); color: var(--turquoise-900); }
.callout-box p { margin: 0; color: var(--turquoise-900); font-size: 14px; line-height: 1.55; }
.callout-box p + p { margin-top: 8px; }
.callout-box.warn {
  background: var(--warn-50);
  border-color: rgba(224, 156, 26, 0.3);
  border-left-color: var(--warn-500);
}
.callout-box.warn h4, .callout-box.warn p { color: #6f4906; }
.callout-box.ink {
  background: var(--ink-50);
  border-color: var(--hairline);
  border-left-color: var(--ink);
}
.callout-box.ink h4, .callout-box.ink p { color: var(--ink); }

/* Platform grid */
.platform-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 0 0 24px;
}
.platform-card {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  padding: 18px;
  display: flex; flex-direction: column; gap: 8px;
  color: var(--ink);
  transition: border-color 120ms, background 120ms, transform 160ms;
}
.platform-card:hover { border-color: var(--turquoise-300); background: var(--turquoise-50); transform: translateY(-2px); }
.platform-card .pname { font: 600 15px/1 var(--font-sans); color: var(--ink); }
.platform-card .pmeta {
  font: 400 12px/1.4 var(--font-mono); letter-spacing: 0.02em; color: var(--ink-500);
}
.platform-card .pmeta b { color: var(--turquoise-700); font-weight: 700; }

/* Screenshot frame */
.shot {
  margin: 0 0 24px; background: var(--paper);
  border: 1px solid var(--hairline); border-radius: var(--r-sm);
  padding: 8px; text-align: center;
}
.shot .frame {
  background: linear-gradient(180deg, #fff 0%, var(--paper) 100%);
  border: 1px solid var(--hairline); border-radius: 4px;
  padding: 28px 24px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-500);
  display: flex; align-items: center; justify-content: center;
  min-height: 180px;
  background-image: repeating-linear-gradient(45deg, transparent 0 14px, rgba(10,18,20,0.025) 14px 15px);
}
.shot .cap {
  font: 400 12px/1.4 var(--font-mono);
  letter-spacing: 0.04em; color: var(--ink-500);
  padding: 8px 8px 4px; text-align: left;
}

/* Article footer */
.art-foot { margin-top: 64px; padding-top: 32px; border-top: 1px solid var(--hairline); }
.helpful {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  padding: 22px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; margin-bottom: 32px; flex-wrap: wrap;
}
.helpful-q { font: 600 15px/1.3 var(--font-sans); color: var(--ink); }
.helpful-actions { display: flex; gap: 8px; }
.helpful-btn {
  height: 36px; padding: 0 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline-strong);
  background: #fff; color: var(--ink);
  font: 600 13px/1 var(--font-sans);
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.helpful-btn:hover { border-color: var(--turquoise-500); background: var(--turquoise-50); color: var(--turquoise-900); }
.helpful-btn.no:hover { border-color: var(--err-500); background: var(--err-50); color: var(--err-500); }
.helpful-btn[aria-pressed="true"] {
  border-color: var(--turquoise-500); background: var(--turquoise-50); color: var(--turquoise-900);
}

.related-head {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-500); margin: 0 0 14px;
}
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.related-card {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  padding: 18px 22px;
  display: flex; flex-direction: column; gap: 4px;
  transition: border-color 120ms, transform 160ms;
}
.related-card:hover { border-color: var(--turquoise-300); transform: translateY(-2px); }
.related-card .rtitle { font: 600 15px/1.35 var(--font-sans); color: var(--ink); }
.related-card .rmeta {
  font: 400 11.5px/1 var(--font-mono); letter-spacing: 0.04em; color: var(--ink-500);
}

/* TOC sidebar */
.toc { position: sticky; top: 88px; align-self: start; padding-top: 4px; }
.toc h4 {
  font: 700 11px/1 var(--font-mono);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-500); margin: 0 0 16px;
}
.toc ol {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 2px;
  border-left: 1px solid var(--hairline);
}
.toc li { padding-left: 14px; border-left: 2px solid transparent; margin-left: -1px; }
.toc li.active { border-left-color: var(--turquoise-500); }
.toc a {
  display: block; padding: 6px 0;
  font: 500 13px/1.4 var(--font-sans); color: var(--ink-500);
  transition: color 120ms;
}
.toc a:hover { color: var(--ink); }
.toc li.active a { color: var(--ink); font-weight: 600; }
.toc-foot {
  margin-top: 28px; padding: 16px;
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  display: flex; flex-direction: column; gap: 10px;
}
.toc-foot h5 { font: 600 13px/1.3 var(--font-sans); color: var(--ink); margin: 0; }
.toc-foot p { margin: 0; font: 400 12px/1.5 var(--font-sans); color: var(--ink-700); }
.toc-foot a.btn { border: 0; }

/* Category archive list */
.cat-archive { max-width: 880px; margin: 0 auto; padding: 56px var(--s7) 96px; }
.cat-archive .ca-head { margin-bottom: 32px; }
.cat-archive .ca-head h1 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08; letter-spacing: -0.025em;
  font-weight: 700; margin: 12px 0 8px; color: var(--ink);
}
.cat-archive .ca-head p { margin: 0; color: var(--ink-700); font-size: 16px; line-height: 1.55; }
.ca-list { display: flex; flex-direction: column; gap: 12px; }
.ca-row {
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  padding: 20px 24px;
  display: flex; flex-direction: column; gap: 4px;
  transition: border-color 120ms, transform 160ms;
}
.ca-row:hover { border-color: var(--turquoise-300); transform: translateY(-2px); }
.ca-row .ca-title { font: 600 17px/1.3 var(--font-sans); color: var(--ink); }
.ca-row .ca-excerpt { font-size: 14px; line-height: 1.55; color: var(--ink-700); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-shell { padding-left: var(--s5); padding-right: var(--s5); }
  .cat-archive { padding-left: var(--s5); padding-right: var(--s5); }
}
@media (max-width: 900px) {
  .article-shell { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
}
@media (max-width: 560px) {
  .platform-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}