/* =====================================================================
   Cloud Stack Dynamics — Insights (editorial + article system)
   Loaded only on /insights/ pages and legal pages. Extends the tokens
   and base classes already defined in csd.css (loaded first).
   ===================================================================== */

/* ------------------------------------------------------- listing hero */
.insights-intro { max-width: 640px; margin: 18px 0 0; color: var(--ink-dim); font-size: 1.02rem; line-height: 1.65; }

/* ------------------------------------------------------------ toolbar */
.insight-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.insight-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.insight-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-dim);
  font-size: 0.86rem;
  font-weight: 650;
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}
.insight-chip:hover { border-color: var(--accent-1); color: var(--accent-1); }
.insight-chip.is-active {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: var(--on-accent);
}
.insight-search {
  position: relative;
  flex: 0 0 auto;
  width: min(280px, 100%);
}
.insight-search input {
  width: 100%;
  min-height: 42px;
  padding: 0 16px 0 40px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 0.9rem;
}
.insight-search input:focus-visible { border-color: var(--accent-1); }
.insight-search i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 0.92rem;
  pointer-events: none;
}
.insight-empty {
  display: none;
  padding: 60px 24px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
}
.insight-empty.is-visible { display: block; }

/* ---------------------------------------------------- featured article */
.insight-featured {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 0;
  margin-bottom: 44px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}
.insight-featured:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent-1) 45%, var(--line-strong));
  box-shadow: var(--shadow-sm);
}
.insight-featured-copy { padding: 40px; display: grid; align-content: center; gap: 14px; }
.insight-featured-copy .insight-post-meta { margin-bottom: 2px; }
.insight-featured-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.1;
  font-weight: 640;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.insight-featured-copy p { margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.6; }
.insight-featured-copy .insight-read-link { margin-top: 6px; }

/* ---------------------------------------------------------- post grid */
.insight-grid-listing { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.insight-post-card {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}
.insight-post-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent-1) 45%, var(--line-strong));
  box-shadow: var(--shadow-sm);
}
.insight-post-card[hidden] { display: none; }

.insight-thumb, .insight-featured-visual {
  position: relative;
  min-height: 168px;
  background:
    radial-gradient(ellipse 90% 120% at 15% 0%, color-mix(in srgb, var(--thumb-accent, var(--accent-1)) 30%, transparent), transparent 65%),
    radial-gradient(ellipse 70% 100% at 100% 100%, color-mix(in srgb, var(--thumb-accent-2, var(--accent-2)) 26%, transparent), transparent 60%),
    var(--ground-2);
  overflow: hidden;
}
.insight-featured-visual { min-height: 100%; }
.insight-thumb::before, .insight-featured-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(154, 170, 214, 0.09) 1px, transparent 1px), linear-gradient(90deg, rgba(154, 170, 214, 0.09) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, black, transparent 75%);
}
.insight-thumb i, .insight-featured-visual i {
  position: absolute;
  bottom: 16px;
  right: 18px;
  font-size: 1.6rem;
  color: color-mix(in srgb, var(--thumb-accent, var(--accent-1)) 70%, var(--ink));
  opacity: 0.75;
}

.insight-post-body { padding: 20px 20px 4px; display: grid; gap: 10px; }
.insight-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.insight-category {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  border: 1px solid color-mix(in srgb, var(--thumb-accent, var(--accent-1)) 40%, transparent);
  color: color-mix(in srgb, var(--thumb-accent, var(--accent-1)) 85%, var(--ink));
  background: color-mix(in srgb, var(--thumb-accent, var(--accent-1)) 12%, transparent);
  font-weight: 800;
}
.insight-post-body h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.28;
  margin: 0;
  color: var(--ink);
}
.insight-post-body p { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.55; }
.insight-post-foot { padding: 14px 20px 20px; }
.insight-read-link { display: inline-flex; align-items: center; gap: 4px; color: var(--accent-1); font-weight: 800; font-size: 0.88rem; }
.insight-post-card:hover .insight-read-link { text-decoration: underline; }

/* -------------------------------------------------------- article shell */
.article-shell { width: var(--container); margin: 0 auto; padding: 108px 0 20px; }
.breadcrumb-trail {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  margin-bottom: 20px;
  font-size: 0.86rem;
  color: var(--muted);
}
.breadcrumb-trail a { color: var(--muted); font-weight: 600; }
.breadcrumb-trail a:hover { color: var(--accent-1); }
.breadcrumb-trail span[aria-current] { color: var(--ink-dim); }

.article-header { max-width: 800px; }
.article-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.6vw, 2.9rem);
  line-height: 1.1;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 4px 0 16px;
  color: var(--ink);
  text-wrap: balance;
}
.article-dek { color: var(--ink-dim); font-size: 1.08rem; line-height: 1.6; margin: 0 0 22px; max-width: 68ch; }
.article-meta-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}
.article-meta-row span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta-row i { color: var(--accent-1); }

.article-hero-visual {
  width: var(--container);
  margin: 32px auto 0;
  min-height: 280px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 120% at 20% 0%, color-mix(in srgb, var(--article-accent, var(--accent-1)) 26%, transparent), transparent 65%),
    radial-gradient(ellipse 70% 100% at 100% 100%, color-mix(in srgb, var(--article-accent-2, var(--accent-2)) 22%, transparent), transparent 60%),
    var(--ground-2);
}
.article-hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(154, 170, 214, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(154, 170, 214, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 75% 75% at 50% 45%, black, transparent 75%);
}
.article-hero-visual i {
  position: absolute;
  bottom: 26px;
  right: 30px;
  font-size: 3rem;
  color: color-mix(in srgb, var(--article-accent, var(--accent-1)) 65%, var(--ink));
  opacity: 0.7;
}

/* ------------------------------------------------------------ body copy */
.article-layout {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 48px 0 20px;
}
.article-body {
  max-width: 780px;
  margin: 0 auto;
  color: var(--ink-dim);
  font-size: 1.06rem;
  line-height: 1.78;
}
.article-body > * + * { margin-top: 22px; }
.article-body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  font-weight: 640;
  line-height: 1.24;
  color: var(--ink);
  margin-top: 48px;
}
.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 620;
  line-height: 1.3;
  color: var(--ink);
  margin-top: 36px;
}
.article-body p { margin-top: 20px; }
.article-body ul, .article-body ol { padding-left: 22px; display: grid; gap: 10px; }
.article-body li { color: var(--ink-dim); }
.article-body li::marker { color: var(--accent-1); }
.article-body strong { color: var(--ink); }
.article-body a:not(.button) { color: var(--accent-1); font-weight: 650; text-decoration: underline; text-underline-offset: 3px; }

.article-body blockquote {
  margin: 30px 0;
  padding: 22px 26px;
  border-left: 3px solid var(--accent-1);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--surface);
  color: var(--ink);
  font-size: 1.04rem;
  font-style: normal;
}
.article-body blockquote p { margin: 0; }

.article-callout {
  margin: 30px 0;
  padding: 22px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: var(--surface-soft);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
}
.article-callout i { color: var(--accent-1); font-size: 1.2rem; margin-top: 2px; }
.article-callout strong { display: block; color: var(--ink); margin-bottom: 4px; }
.article-callout p { margin: 0; font-size: 0.98rem; }

.article-body pre {
  margin: 24px 0;
  padding: 20px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--ground-2);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--ink-dim);
}
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 6px;
  color: var(--ink);
}
.article-body pre code { background: none; border: none; padding: 0; color: inherit; }

.article-table-wrap { overflow-x: auto; margin: 24px 0; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 0.94rem; min-width: 480px; }
.article-body th, .article-body td { padding: 12px 16px; border-bottom: 1px solid var(--line); text-align: left; }
.article-body th { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.article-body td { color: var(--ink-dim); }
.article-body tr:last-child td { border-bottom: none; }

/* ----------------------------------------------------------- ad slot */
.csd-ad-slot {
  max-width: 780px;
  margin: 40px auto;
  padding: 4px 0;
}
.csd-ad-slot-inner {
  display: grid;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  min-height: 60px;
}
.csd-ad-label {
  display: block;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Collapse the whole slot (border, label, reserved space) when Google
   reports no ad was served, instead of leaving an empty box on the page. */
.csd-ad-slot:has(ins.adsbygoogle[data-ad-status="unfilled"]) {
  display: none;
}
.csd-ad-unit { width: 100%; min-width: 250px; min-height: 0; }

/* ------------------------------------------------------------ author */
.article-author-strip {
  max-width: 780px;
  margin: 44px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 0.9rem;
}
.article-author-strip img { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; }
.article-author-strip strong { display: block; color: var(--ink); font-weight: 650; }

/* -------------------------------------------------------------- related */
.related-heading { max-width: 780px; margin: 60px auto 20px; }
.related-heading h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 620;
  color: var(--ink);
  margin: 0;
}
.related-grid {
  width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

/* ------------------------------------------------------------- legal */
.legal-content { max-width: 780px; margin: 0 auto; color: var(--ink-dim); font-size: 1.02rem; line-height: 1.75; }
.legal-content h2 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 640; color: var(--ink); margin: 40px 0 14px; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { margin: 14px 0; }
.legal-content ul { padding-left: 22px; display: grid; gap: 8px; margin: 14px 0; }
.legal-content li::marker { color: var(--accent-1); }
.legal-updated { color: var(--muted); font-size: 0.88rem; margin-bottom: 36px; }

/* ---------------------------------------------------------- responsive */
@media (max-width: 1100px) {
  .insight-grid-listing { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .insight-featured { grid-template-columns: 1fr; }
  .insight-featured-visual { min-height: 200px; }
}

@media (max-width: 920px) {
  .article-hero-visual { min-height: 220px; }
}

@media (max-width: 640px) {
  .insight-grid-listing, .related-grid { grid-template-columns: 1fr; }
  .insight-toolbar { flex-direction: column; align-items: stretch; }
  .insight-search { width: 100%; }
  .article-shell { padding-top: 96px; }
  .article-meta-row { gap: 10px 16px; }
  .article-callout { grid-template-columns: 1fr; }
  .insight-featured-copy { padding: 26px; }
}