/* ============================================================
   LMS.Technology – Design System
   A modern, professional design for a senior LMS engineer's
   standards documentation hub & professional portfolio.
   ============================================================ */

/* --- Google Font (loaded in HTML <head>) --- */
/* Uses Inter for body + headings via Google Fonts CDN */

/* --- Design tokens --- */
:root {
  /* Brand palette */
  --navy-900: #0b1120;
  --navy-800: #0f172a;
  --navy-700: #1e293b;
  --navy-600: #334155;

  --teal-500: #14b8a6;
  --teal-400: #2dd4bf;
  --teal-300: #5eead4;

  --cyan-500: #06b6d4;
  --cyan-400: #22d3ee;

  --amber-500: #f59e0b;
  --amber-400: #fbbf24;

  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;

  --white: #ffffff;

  /* Semantic tokens */
  --color-bg: var(--slate-100);
  --color-surface: var(--white);
  --color-text: var(--navy-800);
  --color-text-muted: var(--slate-500);
  --color-text-light: var(--slate-400);
  --color-accent: var(--teal-500);
  --color-accent-hover: var(--teal-400);
  --color-accent-glow: rgba(20, 184, 166, 0.15);
  --color-cta: var(--amber-500);
  --color-cta-hover: var(--amber-400);
  --color-border: var(--slate-200);
  --color-border-hover: var(--slate-300);

  /* Typography */
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", monospace;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radii */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 4px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px var(--color-accent-glow);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
}

/* --- Reset & base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Focus rings for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Container --- */
.site-container {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  background: var(--navy-800) !important;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.site-nav .navbar-brand {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--white) !important;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Teal dot next to brand name */
.site-nav .navbar-brand::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal-400);
  flex-shrink: 0;
}

.site-nav .navbar-brand:hover {
  color: var(--teal-300) !important;
}

.site-nav .nav-link {
  color: var(--slate-300) !important;
  font-weight: 500;
  font-size: 0.9rem;
  padding-left: 0.85rem !important;
  padding-right: 0.85rem !important;
  transition: color var(--transition-fast);
}

.site-nav .nav-link:hover,
.site-nav .nav-link.active {
  color: var(--white) !important;
}

.site-nav .dropdown-menu {
  background: var(--white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0;
  margin-top: 0.25rem;
}

.site-nav .dropdown-item {
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1.1rem;
  color: var(--color-text);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.site-nav .dropdown-item:hover {
  background: var(--slate-100);
  color: var(--teal-500);
}

.site-nav .dropdown-divider {
  border-color: var(--color-border);
  margin: 0.2rem 0;
}

/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */
.site-main {
  flex: 1;
  padding: var(--space-xl) 0 var(--space-3xl);
}

@media (min-width: 768px) {
  .site-main {
    padding: var(--space-2xl) 0 var(--space-3xl);
  }
}

/* ============================================================
   HERO – Home page (gradient variant)
   ============================================================ */
.hero-home {
  background: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-700) 50%, #1a3a4a 100%);
  color: var(--white);
  padding: 3rem 1.5rem 2.5rem;
  border-radius: var(--radius);
  margin-bottom: var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle decorative gradient overlay */
.hero-home::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-home::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .hero-home {
    padding: 4rem 2.5rem 3.5rem;
  }
}

.hero-home .hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--teal-400);
  margin-bottom: var(--space-md);
  position: relative;
}

.hero-home h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
  position: relative;
}

@media (min-width: 768px) {
  .hero-home h1 {
    font-size: 2.75rem;
  }
}

.hero-home .hero-sub {
  font-size: 1.05rem;
  color: var(--slate-300);
  max-width: 560px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
  position: relative;
}

@media (min-width: 768px) {
  .hero-home .hero-sub {
    font-size: 1.15rem;
  }
}

.hero-home .hero-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ============================================================
   HERO – Sub-pages (lighter variant)
   ============================================================ */
.site-hero {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  margin-bottom: var(--space-xl);
  text-align: center;
  position: relative;
}

/* Teal top accent bar */
.site-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 2rem;
  right: 2rem;
  height: 3px;
  background: linear-gradient(90deg, var(--teal-500), var(--cyan-500));
  border-radius: 0 0 2px 2px;
}

@media (min-width: 768px) {
  .site-hero {
    padding: 2.5rem 2.5rem;
  }
}

.site-hero h1 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .site-hero h1 {
    font-size: 2rem;
  }
}

.site-hero .lead {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0;
  line-height: 1.65;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-accent);
  color: var(--white) !important;
  border: none;
  padding: 0.7rem 1.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
}

.btn-primary-brand:hover {
  background: var(--color-accent-hover);
  color: var(--white) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
  text-decoration: none;
}

.btn-outline-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  color: var(--teal-300) !important;
  border: 1.5px solid var(--teal-400);
  padding: 0.65rem 1.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  text-decoration: none;
}

.btn-outline-brand:hover {
  background: rgba(20, 184, 166, 0.1);
  color: var(--white) !important;
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-cta);
  color: var(--navy-900) !important;
  border: none;
  padding: 0.7rem 1.4rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
}

.btn-cta:hover {
  background: var(--color-cta-hover);
  color: var(--navy-900) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
  text-decoration: none;
}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.site-content h2 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: var(--space-xl) 0 var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-content h2:first-child {
  margin-top: 0;
}

/* ============================================================
   CARD GRID
   ============================================================ */
.card-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 576px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .card-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================================
   STANDARD CARDS (with colored accent borders)
   ============================================================ */
.site-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-decoration: none !important;
  color: inherit;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

/* Colored top accent bar */
.site-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--color-accent));
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.site-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-hover);
  color: inherit;
  text-decoration: none !important;
}

.site-card:hover::before {
  opacity: 1;
}

.site-card .card-badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: var(--badge-bg, var(--slate-100));
  color: var(--badge-color, var(--slate-600));
  margin-bottom: var(--space-sm);
}

.site-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.site-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.55;
}

.site-card .card-arrow {
  margin-top: auto;
  padding-top: var(--space-md);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap var(--transition-fast);
}

.site-card:hover .card-arrow {
  gap: 0.5rem;
}

/* Card accent colors per standard */
.card-aicc    { --card-accent: #f59e0b; --badge-bg: #fef3c7; --badge-color: #92400e; }
.card-scorm   { --card-accent: #3b82f6; --badge-bg: #dbeafe; --badge-color: #1e40af; }
.card-scorm2  { --card-accent: #6366f1; --badge-bg: #e0e7ff; --badge-color: #3730a3; }
.card-scorm3  { --card-accent: #8b5cf6; --badge-bg: #ede9fe; --badge-color: #5b21b6; }
.card-scorm4  { --card-accent: #a855f7; --badge-bg: #f3e8ff; --badge-color: #6b21a8; }
.card-xapi    { --card-accent: #14b8a6; --badge-bg: #ccfbf1; --badge-color: #115e59; }
.card-cmi5    { --card-accent: #ec4899; --badge-bg: #fce7f3; --badge-color: #9d174d; }

/* ============================================================
   DOCUMENT LIST
   ============================================================ */
.doc-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-md);
}

.doc-list li {
  margin-bottom: var(--space-sm);
}

.doc-list a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.65rem 1rem;
  background: var(--color-surface);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-weight: 500;
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.doc-list a:hover {
  border-color: var(--color-accent);
  background: var(--white);
  transform: translateX(3px);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
  text-decoration: none;
}

/* Arrow icon on hover */
.doc-list a::before {
  content: "\2192";
  font-size: 0.85rem;
  color: var(--color-accent);
  flex-shrink: 0;
  opacity: 0;
  margin-left: -0.5rem;
  transition: opacity var(--transition-fast), margin var(--transition-fast);
}

.doc-list a:hover::before {
  opacity: 1;
  margin-left: 0;
}

/* Format badges inside doc links */
.doc-list .badge-format {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-xs);
  background: var(--slate-100);
  color: var(--slate-500);
}

.doc-list .badge-format.badge-pdf  { background: #fef2f2; color: #dc2626; }
.doc-list .badge-format.badge-html { background: #f0fdf4; color: #16a34a; }
.doc-list .badge-format.badge-md   { background: #eff6ff; color: #2563eb; }
.doc-list .badge-format.badge-json { background: #fefce8; color: #ca8a04; }
.doc-list .badge-format.badge-xml  { background: #fdf4ff; color: #a855f7; }
.doc-list .badge-format.badge-xsd  { background: #fdf4ff; color: #a855f7; }

/* ============================================================
   RUNTIME / CALLOUT BOX
   ============================================================ */
.doc-callout {
  background: linear-gradient(135deg, #f0fdfa 0%, #ecfeff 100%);
  border: 1px solid rgba(20, 184, 166, 0.25);
  border-left: 3px solid var(--teal-500);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  font-weight: 500;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.doc-callout a {
  color: var(--teal-500);
  font-weight: 600;
}

.doc-callout a:hover {
  text-decoration: underline;
}

/* ============================================================
   HIRE / CTA SECTION
   ============================================================ */
.hire-section {
  background: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-700) 100%);
  color: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  margin-top: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.hire-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amber-500), var(--amber-400), var(--teal-400));
}

@media (min-width: 768px) {
  .hire-section {
    padding: 3rem 2.5rem;
  }
}

.hire-section .hire-eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber-400);
  margin-bottom: var(--space-sm);
}

.hire-section h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
  color: var(--white);
  text-transform: none;
  border: none;
}

@media (min-width: 768px) {
  .hire-section h2 {
    font-size: 1.75rem;
  }
}

.hire-section p {
  color: var(--slate-300);
  font-size: 0.95rem;
  max-width: 520px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}

.hire-section .hire-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* Competency badges inside hire section */
.hire-skills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  margin: 0 auto var(--space-lg);
  max-width: 520px;
}

.hire-skill-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--slate-300);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 150ms, color 150ms;
}

.hire-skill-tag.tag-primary {
  background: rgba(20, 184, 166, 0.15);
  border-color: rgba(20, 184, 166, 0.3);
  color: var(--teal-300);
}

/* Resume secondary link */
.hire-resume-link {
  display: block;
  margin-top: var(--space-md);
  font-size: 0.8rem;
  color: var(--slate-400);
}

.hire-resume-link a {
  color: var(--slate-300);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hire-resume-link a:hover {
  color: var(--white);
}

/* Outline button variant for hire section */
.btn-outline-hire {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  color: var(--white) !important;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  padding: 0.65rem 1.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 150ms, border-color 150ms, transform 150ms;
  text-decoration: none;
}

.btn-outline-hire:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white) !important;
  transform: translateY(-1px);
  text-decoration: none;
}

/* Footer email link */
.footer-email {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: -0.01em;
}

/* ============================================================
   STATS ROW (home page)
   ============================================================ */
.stats-row {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  margin: var(--space-xl) 0;
  padding: var(--space-lg) 0;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  padding: var(--space-xl) 0;
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-footer .footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

@media (min-width: 576px) {
  .site-footer .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.site-footer p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--color-text-muted);
  font-weight: 500;
}

.site-footer a:hover {
  color: var(--color-accent);
}

/* ============================================================
   BLOG
   ============================================================ */

/*
 * All blog elements render on the light site background (--slate-100 / #f1f5f9).
 * Contrast targets: WCAG AA – 4.5:1 normal text, 3:1 large text & UI components.
 *
 * Key accessible pairings on #f1f5f9:
 *   --navy-900 (#0b1120)  ~16.5:1  – headings, titles
 *   --navy-800 (#0f172a)  ~15.5:1  – primary body text
 *   --navy-700 (#1e293b)  ~12.3:1  – secondary body text
 *   --slate-600 (#475569)  ~5.3:1  – meta text, captions (AA)
 *   #0f766e (teal-700)     ~5.0:1  – links & accent text (AA)
 */

/* -- Blog listing (index) -- */
.blog-search-bar {
  display: flex;
  gap: 0.75rem;
  max-width: 600px;
  margin: 0 auto var(--space-md);
}

.blog-search-input {
  flex: 1;
  padding: 0.65rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--navy-800);
  transition: border-color 200ms, box-shadow 200ms;
}

.blog-search-input::placeholder {
  color: var(--slate-500);
}

.blog-search-input:focus {
  outline: none;
  border-color: #0f766e;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.blog-tags-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  margin-bottom: var(--space-lg);
}

.blog-tag-btn {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--white);
  color: var(--slate-600);
  cursor: pointer;
  transition: background 150ms, color 150ms, border-color 150ms;
}

.blog-tag-btn:hover {
  border-color: var(--slate-400);
  color: var(--navy-800);
  background: var(--white);
}

.blog-tag-btn.active {
  background: #f0fdfa;
  border-color: #0f766e;
  color: #0f766e;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 760px;
  margin: 0 auto;
}

.blog-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  text-decoration: none;
  color: var(--navy-800);
  transition: border-color 200ms, transform 200ms, box-shadow 200ms;
}

.blog-card:hover {
  border-color: #0f766e;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  color: var(--navy-800);
}

.blog-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--slate-600);
  margin-bottom: 0.5rem;
}

.blog-card-date {
  font-family: var(--font-mono);
}

.blog-card-tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: #f0fdfa;
  color: #0f766e;
}

.blog-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--navy-900);
}

.blog-card p {
  font-size: 0.92rem;
  color: var(--slate-600);
  margin: 0;
  line-height: 1.55;
}

.blog-card-arrow {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #0f766e;
}

.blog-no-results {
  text-align: center;
  color: var(--slate-600);
  padding: var(--space-xl) 0;
  font-size: 0.95rem;
}

/* -- Blog post (reader) -- */
.blog-article-header {
  max-width: 760px;
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.blog-article-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--navy-900);
  margin: 0 0 0.75rem;
  line-height: 1.2;
}

.blog-article-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--slate-600);
  margin-bottom: 0.75rem;
}

.blog-article-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
}

.blog-article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--navy-800);
}

.blog-article-body h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navy-900);
  margin: 2rem 0 0.75rem;
}

.blog-article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy-800);
  margin: 1.5rem 0 0.5rem;
}

.blog-article-body p {
  margin: 0 0 1rem;
}

.blog-article-body ul,
.blog-article-body ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

.blog-article-body li {
  margin-bottom: 0.35rem;
}

.blog-article-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: #e2e8f0;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  color: #0f766e;
}

.blog-article-body blockquote {
  border-left: 3px solid #0f766e;
  margin: 1.25rem 0;
  padding: 0.75rem 1.25rem;
  background: #f0fdfa;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--navy-700);
}

.blog-article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.blog-article-body thead th {
  background: var(--navy-800);
  padding: 0.6rem 0.75rem;
  text-align: left;
  font-weight: 600;
  color: var(--white);
  border-bottom: 2px solid var(--navy-700);
}

.blog-article-body tbody td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--navy-800);
}

.blog-article-body tbody tr:hover {
  background: rgba(15, 118, 110, 0.04);
}

.blog-article-body strong {
  color: var(--navy-900);
  font-weight: 600;
}

.blog-article-body a {
  color: #0f766e;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blog-article-body a:hover {
  color: #115e59;
}

.blog-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  max-width: 760px;
  margin: 0 auto var(--space-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--slate-600);
  text-decoration: none;
}

.blog-back-link:hover {
  color: #0f766e;
  text-decoration: none;
}

@media (max-width: 600px) {
  .blog-article-header h1 {
    font-size: 1.5rem;
  }
  .blog-card {
    padding: 1.1rem 1.25rem;
  }
  .blog-card h3 {
    font-size: 1.05rem;
  }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-accent {
  color: var(--color-accent);
}

.text-muted-brand {
  color: var(--color-text-muted);
}
