/* PulSentry blog - shared stylesheet (mirrors the main site design system) */

:root, [data-theme="light"] {
  --bg-page: #F7F5EF;
  --bg-elevated: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-inset: #EFEBE1;
  --text-heading: #0B1220;
  --text-body: #1A2433;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --accent: #07795E;
  --accent-deep: #055A46;
  --accent-bright: #00B894;
  --accent-bg: rgba(7,121,94,0.06);
  --accent-border: rgba(7,121,94,0.18);
  --accent-soft: rgba(7,121,94,0.10);
  --alert: #B91C1C;
  --alert-bg: rgba(185,28,28,0.06);
  --alert-border: rgba(185,28,28,0.20);
  --border: rgba(14,22,40,0.08);
  --divider: rgba(14,22,40,0.06);
  --shadow-sm: 0 1px 2px rgba(14,22,40,0.05), 0 1px 3px rgba(14,22,40,0.04);
  --shadow-md: 0 4px 12px rgba(14,22,40,0.08), 0 2px 4px rgba(14,22,40,0.04);
  --accent-gradient: linear-gradient(135deg, #00B894 0%, #07795E 60%, #055A46 100%);
  --font-display: "Sora", "IBM Plex Sans", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}
[data-theme="dark"] {
  --bg-page: #0E1216;
  --bg-elevated: #161B22;
  --bg-card: #161B22;
  --bg-inset: #1C232B;
  --text-heading: #F1F5F9;
  --text-body: #E2E8F0;
  --text-secondary: #B6C2CF;
  --text-muted: #8A99A0;
  --accent: #1FDFB5;
  --accent-deep: #00B894;
  --accent-bright: #1FDFB5;
  --accent-bg: rgba(31,223,181,0.08);
  --accent-border: rgba(31,223,181,0.22);
  --accent-soft: rgba(31,223,181,0.12);
  --alert: #F87171;
  --alert-bg: rgba(248,113,113,0.10);
  --alert-border: rgba(248,113,113,0.28);
  --border: rgba(255,255,255,0.10);
  --divider: rgba(255,255,255,0.07);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.4);
  --accent-gradient: linear-gradient(135deg, #1FDFB5 0%, #00B894 100%);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 18px; }
body {
  font-family: var(--font-body);
  background: var(--bg-page);
  color: var(--text-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Header */
.blog-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem clamp(1.2rem, 5vw, 3rem);
  background: rgba(245,242,236,0.9);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--divider);
}
[data-theme="dark"] .blog-nav { background: rgba(14,18,22,0.85); }
.blog-logo { display: inline-flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.blog-logo-icon {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--accent-gradient, linear-gradient(135deg,#00B894,#055A46));
  display: grid; place-items: center;
}
.blog-logo-icon svg { width: 18px; height: 18px; stroke: #fff; fill: none; }
.blog-logo-text { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; color: var(--text-heading); letter-spacing: -0.02em; }
.blog-logo-text .teal { color: var(--accent); }
.blog-nav-links { display: flex; align-items: center; gap: 1.4rem; }
.blog-nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.92rem; font-weight: 500; transition: color 0.2s; }
.blog-nav-links a:hover { color: var(--accent); }
.theme-toggle { background: none; border: 1px solid var(--border); border-radius: 8px; padding: 0.35rem 0.5rem; cursor: pointer; color: var(--text-secondary); font-size: 0.95rem; }
@media (max-width: 640px) { .blog-nav-links a.hide-sm { display: none; } }

/* Layout */
.blog-wrap { max-width: 760px; margin: 0 auto; padding: clamp(2rem, 5vw, 4rem) clamp(1.2rem, 5vw, 2rem) 5rem; }
.blog-index-wrap { max-width: 920px; }

/* Article header */
.post-eyebrow {
  font-family: var(--font-mono); font-size: 0.74rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.18em; color: var(--accent);
  display: inline-flex; align-items: center; gap: 0.55rem; margin-bottom: 1rem;
}
.post-eyebrow::before { content: ""; width: 24px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--accent), transparent); }
.post-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2rem, 5vw, 3rem); line-height: 1.08; letter-spacing: -0.03em;
  color: var(--text-heading); text-wrap: balance; margin-bottom: 1rem;
}
.post-meta { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0.4rem; }
.post-meta strong { color: var(--text-secondary); font-weight: 500; }
.post-lede { font-size: 1.2rem; line-height: 1.6; color: var(--text-secondary); margin: 1.5rem 0 2rem; padding-bottom: 2rem; border-bottom: 1px solid var(--divider); }

/* Article body */
.post-body h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.4rem, 3vw, 1.85rem); line-height: 1.2; letter-spacing: -0.02em; color: var(--text-heading); margin: 2.6rem 0 0.9rem; text-wrap: balance; }
.post-body h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.15rem; color: var(--text-heading); margin: 1.8rem 0 0.6rem; }
.post-body p { margin: 0 0 1.15rem; font-size: 1.05rem; line-height: 1.75; color: var(--text-body); }
.post-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; }
.post-body strong { color: var(--text-heading); font-weight: 600; }
.post-body ul, .post-body ol { margin: 0 0 1.15rem 1.3rem; }
.post-body li { margin-bottom: 0.5rem; font-size: 1.05rem; line-height: 1.7; }
.post-body blockquote {
  margin: 1.5rem 0; padding: 1rem 1.3rem; border-left: 3px solid var(--accent);
  background: var(--accent-bg); border-radius: 0 10px 10px 0;
  font-size: 1.05rem; color: var(--text-secondary);
}
.post-body .answer-box {
  margin: 0 0 2rem; padding: 1.3rem 1.5rem; background: var(--accent-bg);
  border: 1px solid var(--accent-border); border-radius: 14px;
  font-size: 1.08rem; line-height: 1.7; color: var(--text-body);
}
.post-body .answer-box strong { color: var(--text-heading); }
.post-body figure { margin: 1.8rem 0; }
.post-body table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.95rem; }
.post-body th, .post-body td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--divider); }
.post-body th { font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); }
.post-body code { font-family: var(--font-mono); font-size: 0.92em; background: var(--bg-inset); padding: 0.1rem 0.35rem; border-radius: 4px; }

.post-refs { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--divider); }
.post-refs h2 { font-size: 1.1rem; font-family: var(--font-body); font-weight: 600; color: var(--text-heading); margin-bottom: 0.8rem; }
.post-refs ol { margin-left: 1.2rem; }
.post-refs li { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0.5rem; line-height: 1.5; }
.post-refs a { color: var(--text-secondary); }

.disclaimer {
  margin-top: 2.5rem; padding: 1rem 1.2rem; border: 1px dashed var(--border);
  border-radius: 12px; font-size: 0.85rem; color: var(--text-muted); line-height: 1.6;
}

.post-cta {
  margin-top: 3rem; padding: 2rem; text-align: center;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 18px; box-shadow: var(--shadow-sm);
}
.post-cta h2 { font-family: var(--font-display); font-size: 1.5rem; color: var(--text-heading); margin-bottom: 0.6rem; border: 0; }
.post-cta p { color: var(--text-secondary); margin-bottom: 1.2rem; }
.btn {
  display: inline-block; padding: 0.7rem 1.4rem; border-radius: 10px; font-weight: 600;
  font-size: 0.95rem; text-decoration: none; transition: transform 0.2s, box-shadow 0.2s;
}
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
[data-theme="dark"] .btn-accent { color: #03110d; }
.back-link { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; font-weight: 500; margin-bottom: 1.5rem; }
.back-link:hover { color: var(--accent); }

/* Blog index */
.blog-index-head { margin-bottom: 2.5rem; }
.blog-index-head h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.2rem, 5vw, 3.2rem); letter-spacing: -0.03em; color: var(--text-heading); margin-bottom: 0.8rem; }
.blog-index-head p { font-size: 1.15rem; color: var(--text-secondary); max-width: 640px; }
.post-grid { display: grid; grid-template-columns: 1fr; gap: 1.2rem; }
@media (min-width: 720px) { .post-grid { grid-template-columns: 1fr 1fr; } }
.post-card {
  display: flex; flex-direction: column; padding: 1.6rem; border-radius: 16px;
  background: var(--bg-card); border: 1px solid var(--border); text-decoration: none;
  box-shadow: var(--shadow-sm); transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s;
}
.post-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.post-card-cat { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 0.6rem; }
.post-card h2 { font-family: var(--font-display); font-weight: 600; font-size: 1.25rem; line-height: 1.25; letter-spacing: -0.015em; color: var(--text-heading); margin-bottom: 0.5rem; }
.post-card p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }
.post-card .read { margin-top: auto; padding-top: 0.9rem; font-size: 0.85rem; font-weight: 600; color: var(--accent); }
.coming-soon { opacity: 0.6; pointer-events: none; }
.coming-soon .read { color: var(--text-muted); }

.blog-footer { border-top: 1px solid var(--divider); padding: 2rem clamp(1.2rem,5vw,3rem); text-align: center; font-size: 0.85rem; color: var(--text-muted); }
.blog-footer a { color: var(--text-secondary); text-decoration: none; }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto; } .post-card:hover, .btn-accent:hover { transform: none; } }

/* Accessibility: skip link, visible focus, >=44px tap targets (WCAG 2.4.1 / 2.4.7 / 2.5.5) */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--accent); color: #fff; padding: 0.75rem 1.25rem;
  border-radius: 0 0 10px 0; font-weight: 600; text-decoration: none;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
[data-theme="dark"] :focus-visible { outline-color: var(--accent-bright); }
.blog-nav-links a { min-height: 44px; display: inline-flex; align-items: center; }
.theme-toggle { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }

/* Visible FAQ (kept word-for-word in sync with the page's FAQPage JSON-LD) */
.post-faq { margin-top: 2.6rem; padding-top: 1.6rem; border-top: 1px solid var(--divider); }
.post-faq h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.4rem,3vw,1.85rem); color: var(--text-heading); margin-bottom: 1rem; text-wrap: balance; }
.post-faq h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.12rem; color: var(--text-heading); margin: 1.5rem 0 0.4rem; }
.post-faq p { font-size: 1.02rem; line-height: 1.7; color: var(--text-body); margin: 0 0 0.7rem; }

/* ============================================================
   BLOG DESIGN ELEVATION (from the blog design critique; matches the
   patient-lane + homepage system). CSS-only, AA-safe, reduced-motion-guarded.
   ============================================================ */
:root, [data-theme="light"] {
  --r-sm: 10px; --r-md: 14px; --r-lg: 18px; --r-xl: 22px;
  --lift: -3px; --measure: 68ch;
  --ease-calm: cubic-bezier(0.32, 0.72, 0, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --edge-hi: inset 0 1px 0 rgba(255,255,255,0.7);
  --accent-ink: #066B53;
  --ring-accent: 0 0 0 4px rgba(7,121,94,0.16);
  --surface-grad: linear-gradient(180deg, #FFFFFF, #FFFDF8);
  --selection-bg: rgba(7,121,94,0.16);
  --shadow-sm: 0 1px 2px rgba(22,32,52,0.04), 0 3px 8px rgba(22,32,52,0.05);
  --shadow-md: 0 6px 16px rgba(22,32,52,0.07), 0 14px 32px rgba(22,32,52,0.09);
  --shadow-lg: 0 24px 56px rgba(22,32,52,0.13);
}
[data-theme="dark"] {
  --edge-hi: inset 0 1px 0 rgba(255,255,255,0.06);
  --accent-ink: #3BE8C2;
  --ring-accent: 0 0 0 4px rgba(31,223,181,0.22);
  --surface-grad: linear-gradient(180deg, #1B232D, #161D26);
  --selection-bg: rgba(31,223,181,0.24);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.30), 0 3px 10px rgba(0,0,0,0.28);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.40), 0 16px 40px rgba(0,0,0,0.45);
  --shadow-lg: 0 28px 64px rgba(0,0,0,0.55);
}
::selection { background: var(--selection-bg); color: var(--text-heading); }
::-moz-selection { background: var(--selection-bg); color: var(--text-heading); }
.post-body a, .post-faq a, .post-lede a { color: var(--accent-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; transition: color 0.2s var(--ease-soft); }
.post-body p, .post-body li { max-width: var(--measure); text-wrap: pretty; }
.post-body h2:first-child, .post-body > .answer-box:first-child { margin-top: 0; }
.post-body .answer-box { background: var(--surface-grad); border-radius: var(--r-lg); padding-left: 1.65rem; box-shadow: var(--edge-hi), inset 4px 0 0 var(--accent), var(--shadow-sm); }
.post-body blockquote { border-left: none; border-radius: var(--r-md); padding-left: 1.6rem; box-shadow: var(--edge-hi), inset 4px 0 0 var(--accent); }
.post-card { background: var(--surface-grad); border-radius: var(--r-lg); box-shadow: var(--edge-hi), var(--shadow-sm); transition: transform 0.34s var(--ease-calm), box-shadow 0.34s var(--ease-calm), border-color 0.34s var(--ease-calm); }
.post-card:hover { transform: translateY(var(--lift)); box-shadow: var(--edge-hi), var(--shadow-md); border-color: var(--accent-border); }
.post-card h2 { transition: color 0.2s var(--ease-soft); }
.post-card:hover h2 { color: var(--accent-ink); }
.post-cta { background: var(--surface-grad); border-radius: var(--r-xl); box-shadow: var(--edge-hi), var(--shadow-md); transition: transform 0.34s var(--ease-calm), box-shadow 0.34s var(--ease-calm); }
.post-cta:hover { transform: translateY(-2px); box-shadow: var(--edge-hi), var(--shadow-lg); }
.btn { border-radius: var(--r-sm); transition: transform 0.28s var(--ease-calm), box-shadow 0.28s var(--ease-calm), background 0.2s var(--ease-soft); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-accent:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
.post-body table { border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden; box-shadow: var(--edge-hi), var(--shadow-sm); }
.post-body thead th { background: var(--bg-inset); border-bottom: 1px solid var(--border); }
.post-body code { border: 1px solid var(--border); border-radius: var(--r-sm); padding: 0.08rem 0.38rem; }
.post-faq { border-top-color: var(--accent-border); }
.disclaimer { border-radius: var(--r-md); box-shadow: var(--edge-hi); }
.post-card:focus-visible, .btn:focus-visible, .blog-nav-links a:focus-visible, .back-link:focus-visible, .theme-toggle:focus-visible { box-shadow: var(--ring-accent); }
@media (prefers-reduced-motion: reduce) {
  .post-card, .post-cta, .btn { transition: none; }
  .post-card:hover, .post-cta:hover, .btn-accent:hover, .btn-accent:active { transform: none !important; }
}

/* ===== Motion polish (calm, deterministic, reduced-motion-guarded) ===== */
@keyframes pEnter { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.post-eyebrow, .post-title, .post-lede { animation: pEnter 0.7s var(--ease-calm) both; }
.post-title { animation-delay: 0.07s; }
.post-lede { animation-delay: 0.15s; }
.post-card .read, .back-link { transition: transform 0.25s var(--ease-calm); }
.post-card:hover .read { transform: translateX(4px); }
.back-link:hover { transform: translateX(-3px); }
.post-body a, .post-faq a { transition: text-decoration-thickness 0.2s var(--ease-soft), color 0.2s var(--ease-soft); }
.post-body a:hover, .post-faq a:hover { text-decoration-thickness: 2.5px; }
.theme-toggle { transition: transform 0.45s var(--ease-calm), border-color 0.2s var(--ease-soft), color 0.2s var(--ease-soft); }
.theme-toggle:hover { transform: rotate(18deg); }
@media (prefers-reduced-motion: reduce) {
  .post-eyebrow, .post-title, .post-lede { animation: none; }
  .post-card:hover .read, .back-link:hover, .theme-toggle:hover { transform: none !important; }
}