/* StackSense blog shared styles. One source of truth for /blog/. */

:root {
  --brand-dark: #0c0e12;
  --brand-dark-2: #12151c;
  --teal: #1a8c87;
  --teal-dark: #157a76;
  --paper: #f5f7f6;
  --ink: #0c1a18;
  --body: #334e4b;
  --muted: #5a716d;
  --faint: #708884;
  --line: #dce8e5;
  --card-shadow: 0 12px 40px rgba(15, 23, 42, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--paper);
  color: var(--ink);
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Site header (brand chrome) ---------- */

.site-header {
  background: var(--brand-dark);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.site-header .inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: .85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: #fff;
  font-weight: 800;
  font-size: 1.08rem;
  letter-spacing: -.01em;
}
.brand:hover { text-decoration: none; opacity: .9; }
.brand img { width: 26px; height: 26px; border-radius: 6px; display: block; }

.site-nav { display: flex; align-items: center; gap: 1.1rem; }
.site-nav .navlink { color: rgba(255, 255, 255, .82); font-size: .95rem; font-weight: 600; }
.site-nav .navlink:hover { color: #fff; text-decoration: none; }

.btn-cta {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  padding: .55rem 1rem;
  border-radius: .7rem;
  font-weight: 700;
  font-size: .92rem;
  white-space: nowrap;
}
.btn-cta:hover { background: var(--teal-dark); text-decoration: none; }

/* ---------- Layout ---------- */

.page {
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

.page-wide { max-width: 860px; }

/* ---------- Breadcrumb + byline ---------- */

.breadcrumb {
  font-size: .88rem;
  color: var(--faint);
  margin-bottom: 1.4rem;
  overflow-wrap: anywhere;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--teal); }
.breadcrumb .sep { margin: 0 .4rem; color: var(--line); }

.byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  font-size: .9rem;
  color: var(--muted);
  margin: .7rem 0 0;
}
.byline .dot { color: var(--line); }

/* ---------- Article typography ---------- */

article header { margin-bottom: 1.6rem; }

h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 .5rem; letter-spacing: -.015em; }
h2 { font-size: 1.4rem; margin: 2.2rem 0 1rem; letter-spacing: -.01em; }
h3 { font-size: 1.08rem; margin: 1.4rem 0 .6rem; }

p, li { line-height: 1.75; color: var(--body); font-size: 1.02rem; }
ul, ol { margin: 0 0 1rem 1.4rem; padding: 0; }

.lede { font-size: 1.12rem; color: #1f3a36; margin-top: 1rem; }

blockquote {
  margin: 1.25rem 0;
  padding: .2rem 1.2rem;
  border-left: 3px solid var(--teal);
  background: #fff;
  border-radius: 0 .6rem .6rem 0;
}
blockquote p { color: var(--muted); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: .95rem;
  background: #fff;
}
th, td { padding: .8rem .7rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #eff7f4; font-weight: 700; }

.callout {
  background: #fff7ed;
  border: 1px solid #f3d9b8;
  border-radius: .8rem;
  padding: 1rem 1.2rem;
  margin: 1.25rem 0;
  font-size: .97rem;
  color: #5a4326;
}

/* ---------- CTA ---------- */

.cta {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  padding: .9rem 1.4rem;
  border-radius: .8rem;
  font-weight: 700;
  margin: 1rem 0;
}
.cta:hover { text-decoration: none; background: var(--teal-dark); }

.ctaband {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.4rem 1.6rem;
  margin: 2rem 0;
  box-shadow: var(--card-shadow);
}

/* ---------- Disclaimers + article footer line ---------- */

.disclaimer {
  font-size: .9rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  margin-top: 2.5rem;
  padding-top: 1.2rem;
}
.footer { margin-top: 1.2rem; font-size: .85rem; color: var(--faint); }

/* ---------- Related articles ---------- */

.related { margin-top: 2.5rem; border-top: 1px solid var(--line); padding-top: 1.6rem; }
.related h2 { margin-top: 0; font-size: 1.15rem; }
.related ul { list-style: none; margin: 0; }
.related li { margin-bottom: .8rem; }
.related a { font-weight: 600; }
.related .related-desc { display: block; font-size: .9rem; color: var(--muted); margin-top: .15rem; }

.backlink { margin-top: 2rem; font-size: .95rem; }

/* ---------- Blog index ---------- */

.index-intro { margin-bottom: 2rem; }
.index-intro .sub { color: var(--muted); margin: 0; }

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.3rem 1.5rem;
  box-shadow: var(--card-shadow);
  transition: border-color .15s ease, transform .15s ease;
}
.post-card:hover { text-decoration: none; border-color: var(--teal); transform: translateY(-2px); }
.post-card h2 { font-size: 1.18rem; margin: 0; color: var(--ink); line-height: 1.35; }
.post-card .excerpt { margin: 0; color: var(--body); font-size: .95rem; line-height: 1.6; }
.post-card .tag {
  align-self: flex-start;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--teal);
  background: #e6f2f1;
  border-radius: 99px;
  padding: .22rem .65rem;
}
.post-card .meta { margin: 0; font-size: .85rem; color: var(--faint); }

/* ---------- Site footer (brand chrome) ---------- */

.site-footer {
  background: var(--brand-dark);
  color: rgba(255, 255, 255, .75);
  margin-top: 3rem;
}
.site-footer .inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.site-footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.4rem;
  margin-bottom: 1rem;
}
.site-footer .footer-links a { color: rgba(255, 255, 255, .82); font-size: .92rem; font-weight: 600; }
.site-footer .footer-links a:hover { color: #fff; }
.site-footer .tagline { font-size: .92rem; margin: 0 0 .4rem; color: rgba(255, 255, 255, .75); }
.site-footer .copyright { font-size: .82rem; margin: 0; color: rgba(255, 255, 255, .45); }

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .page { padding: 1.25rem 1rem 2.5rem; }
  h1 { font-size: 1.7rem; }
  table { font-size: .85rem; display: block; overflow-x: auto; }
  .site-header .inner, .site-footer .inner { padding-left: 1rem; padding-right: 1rem; }
}

@media (max-width: 400px) {
  .site-header .inner { gap: .6rem; }
  .site-nav { gap: .7rem; }
  .btn-cta { padding: .5rem .75rem; font-size: .85rem; }
  .brand { font-size: 1rem; }
}