/* ==========================================================================
   TeamsInsight Design System & Stylesheet
   Modern, Accessible (WCAG 2.2 AA), Responsive Editorial Technology Publication
   ========================================================================== */

:root {
  /* Color Palette */
  --primary-navy: #172554;
  --secondary-blue: #2563EB;
  --secondary-blue-hover: #1D4ED8;
  --accent-teal: #0F766E;
  --accent-teal-light: #CCFBF1;
  --accent-teal-dark: #115E59;
  --bg-main: #FFFFFF;
  --bg-alt: #F8FAFC;
  --bg-muted: #F1F5F9;
  --bg-card: #FFFFFF;
  --text-primary: #172033;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --border-focus: #2563EB;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Layout */
  --container-max: 1200px;
  --article-max: 760px;
  --header-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  --transition: all 0.2s ease-in-out;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-main);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--secondary-blue);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--secondary-blue-hover);
  text-decoration: underline;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* Skip link for keyboard accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--primary-navy);
  color: #FFFFFF;
  padding: 12px 20px;
  z-index: 10000;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 15px;
  outline: 3px solid #FDE047;
}

/* Focus indicator */
:focus-visible {
  outline: 2px solid var(--secondary-blue);
  outline-offset: 3px;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-link:hover {
  text-decoration: none;
}

.brand-logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary-navy), var(--secondary-blue));
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.15rem;
  border-radius: 9px;
  box-shadow: 0 2px 4px rgba(23, 37, 84, 0.2);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.brand-subtitle {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-teal);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-link {
  padding: 8px 14px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-navy);
  background-color: var(--bg-alt);
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.header-search-btn:hover {
  border-color: var(--secondary-blue);
  color: var(--text-primary);
  background-color: #FFFFFF;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  color: var(--primary-navy);
  cursor: pointer;
  border-radius: var(--radius-sm);
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
}

/* Mobile Nav Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(23, 37, 84, 0.4);
  backdrop-filter: blur(4px);
  z-index: 999;
}

.mobile-drawer.is-open {
  display: block;
}

.mobile-drawer-content {
  background-color: #FFFFFF;
  border-bottom: 2px solid var(--border-color);
  padding: 20px 24px 32px;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-links .nav-link {
  display: block;
  padding: 12px 16px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Hero Section & Search Bar
   ========================================================================== */

.hero-section {
  background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-alt) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 56px 0 64px;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background-color: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--secondary-blue);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-search-wrapper {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}

.search-box {
  display: flex;
  align-items: center;
  background-color: #FFFFFF;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 6px 10px 6px 18px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.search-box svg {
  color: var(--text-muted);
  flex-shrink: 0;
  margin-right: 12px;
}

.search-input {
  width: 100%;
  border: none;
  background: transparent;
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
}

.search-btn {
  background-color: var(--primary-navy);
  color: #FFFFFF;
  border: none;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.94rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.search-btn:hover {
  background-color: var(--secondary-blue);
}

.search-suggestions {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.search-tag {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
}

.search-tag:hover {
  border-color: var(--secondary-blue);
  color: var(--secondary-blue);
  text-decoration: none;
}

/* Live Search Results Dropdown */
.search-results-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 8px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  max-height: 420px;
  overflow-y: auto;
  z-index: 500;
  display: none;
  text-align: left;
}

.search-results-dropdown.is-active {
  display: block;
}

.search-result-item {
  display: block;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  transition: var(--transition);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover, .search-result-item:focus {
  background-color: var(--bg-alt);
  text-decoration: none;
}

.search-result-category {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-teal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.search-result-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--primary-navy);
  line-height: 1.35;
  margin-bottom: 4px;
}

.search-result-snippet {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   Section Headers & Grids
   ========================================================================== */

.section {
  padding: 64px 0;
}

.section-alt {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 20px;
}

.section-title-wrap {
  max-width: 680px;
}

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-teal);
  margin-bottom: 6px;
}

.section-heading {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

.section-link {
  font-weight: 600;
  font-size: 0.94rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

/* ==========================================================================
   Article Cards & Grids
   ========================================================================== */

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
}

@media (max-width: 480px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
}

.article-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}

.article-card-image-wrap {
  position: relative;
  width: 100%;
  height: 200px;
  background-color: #E2E8F0;
  overflow: hidden;
}

.article-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.article-card:hover .article-card-image {
  transform: scale(1.03);
}

.article-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.8rem;
}

.article-category-badge {
  display: inline-block;
  padding: 4px 10px;
  background-color: #F0FDFA;
  color: var(--accent-teal-dark);
  font-weight: 700;
  border-radius: var(--radius-full);
  border: 1px solid #CCFBF1;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.article-reading-time {
  color: var(--text-muted);
  font-weight: 500;
}

.article-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--primary-navy);
  margin-bottom: 10px;
}

.article-card-title a {
  color: inherit;
  text-decoration: none;
}

.article-card-title a:hover {
  color: var(--secondary-blue);
  text-decoration: none;
}

.article-card-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  margin-top: auto;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  color: var(--secondary-blue);
  text-decoration: none;
}

.article-read-more:hover {
  color: var(--secondary-blue-hover);
  text-decoration: underline;
}

/* Featured Article Card (Span 2) */
.article-card.featured-card {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
}

.article-card.featured-card .article-card-image-wrap {
  height: 100%;
  min-height: 280px;
}

@media (max-width: 900px) {
  .article-card.featured-card {
    grid-column: span 1;
    display: flex;
    flex-direction: column;
  }
  .article-card.featured-card .article-card-image-wrap {
    height: 220px;
  }
}

/* ==========================================================================
   Topic / Category Cards
   ========================================================================== */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.topic-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.topic-card:hover {
  border-color: var(--secondary-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.topic-card-icon {
  width: 48px;
  height: 48px;
  background-color: #EFF6FF;
  border: 1px solid #DBEAFE;
  color: var(--secondary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.4rem;
}

.topic-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 8px;
}

.topic-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.topic-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--secondary-blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}

/* ==========================================================================
   Practical Tips Section
   ========================================================================== */

.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.tip-card {
  background-color: #FFFFFF;
  border-left: 4px solid var(--accent-teal);
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.tip-number {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent-teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.tip-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 8px;
}

.tip-body {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ==========================================================================
   Editorial Mission Box
   ========================================================================== */

.mission-box {
  background-color: var(--primary-navy);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}

.mission-text h2 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #FFFFFF;
}

.mission-text p {
  font-size: 1.05rem;
  line-height: 1.65;
  color: #E2E8F0;
  margin-bottom: 24px;
}

.mission-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.mission-stat-item {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
}

.mission-stat-val {
  font-size: 1.8rem;
  font-weight: 800;
  color: #38BDF8;
  margin-bottom: 4px;
}

.mission-stat-label {
  font-size: 0.85rem;
  color: #CBD5E1;
  font-weight: 500;
}

@media (max-width: 800px) {
  .mission-box {
    grid-template-columns: 1fr;
    padding: 32px 24px;
  }
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.breadcrumbs {
  padding: 16px 0;
  background-color: var(--bg-alt);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

.breadcrumb-item a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--secondary-blue);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: #94A3B8;
  font-size: 0.8rem;
}

.breadcrumb-item[aria-current="page"] {
  color: var(--primary-navy);
  font-weight: 600;
}

/* ==========================================================================
   Article Detail Page Layout
   ========================================================================== */

.article-header {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--border-color);
  background-color: #FFFFFF;
}

.article-header-inner {
  max-width: var(--article-max);
  margin: 0 auto;
}

.article-header-badge {
  margin-bottom: 16px;
}

.article-page-title {
  font-size: clamp(2.2rem, 3.8vw, 3rem);
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 20px;
}

.article-page-summary {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.article-header-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-cover-wrap {
  max-width: 960px;
  margin: 40px auto 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.article-cover-image {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
}

.article-cover-caption {
  padding: 10px 18px;
  font-size: 0.82rem;
  color: var(--text-muted);
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border-color);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

@media (max-width: 960px) {
  .article-layout {
    grid-template-columns: 1fr;
    padding-left: 16px;
    padding-right: 16px;
  }
}

.article-body {
  max-width: var(--article-max);
}

/* Article Typography */
.article-body h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-top: 48px;
  margin-bottom: 18px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.article-body h2:first-of-type {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-top: 32px;
  margin-bottom: 14px;
}

.article-body p {
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--text-primary);
  margin-bottom: 22px;
}

.article-body ul, .article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-body li {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 8px;
}

/* Callout Boxes */
.callout {
  padding: 22px 26px;
  border-radius: var(--radius-md);
  margin: 32px 0;
  border-left: 5px solid;
}

.callout-warning {
  background-color: #FFFBEB;
  border-left-color: #D97706;
}

.callout-warning .callout-title {
  color: #92400E;
}

.callout-tip {
  background-color: #F0FDF4;
  border-left-color: #16A34A;
}

.callout-tip .callout-title {
  color: #166534;
}

.callout-info {
  background-color: #EFF6FF;
  border-left-color: #2563EB;
}

.callout-info .callout-title {
  color: #1E40AF;
}

.callout-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.callout p {
  margin-bottom: 0;
  font-size: 0.98rem;
  line-height: 1.6;
  color: #334155;
}

/* Numbered Steps */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 32px 0;
}

.step-item {
  display: flex;
  gap: 18px;
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.step-number-bubble {
  width: 36px;
  height: 36px;
  background-color: var(--primary-navy);
  color: #FFFFFF;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-content {
  flex-grow: 1;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0;
}

/* Key Takeaways Box */
.takeaways-box {
  background-color: #F8FAFC;
  border: 1px solid #CBD5E1;
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 40px 0;
}

.takeaways-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 16px;
}

.takeaways-list {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 0;
}

.takeaways-list li {
  position: relative;
  padding-left: 26px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text-primary);
  margin-bottom: 0;
}

.takeaways-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-teal);
  font-weight: 800;
}

/* Common Mistakes Cards */
.mistakes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 32px 0;
}

.mistake-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.mistake-header {
  background-color: #FEF2F2;
  border-bottom: 1px solid #FEE2E2;
  padding: 12px 18px;
  font-size: 0.94rem;
  font-weight: 700;
  color: #991B1B;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mistake-body {
  padding: 14px 18px;
  background-color: #FFFFFF;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.mistake-solution {
  background-color: #F0FDF4;
  border-top: 1px solid #DCFCE7;
  padding: 12px 18px;
  font-size: 0.94rem;
  color: #166534;
}

.mistake-solution strong {
  color: #14532D;
}

/* Practical Checklist Box */
.checklist-box {
  background-color: #FFFFFF;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 40px 0;
}

.checklist-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.checklist-items {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  color: var(--text-primary);
}

.checklist-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--secondary-blue);
  margin-top: 4px;
}

/* Sidebar / Table of Contents */
.article-sidebar {
  position: relative;
}

.sidebar-sticky {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.toc-card {
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.toc-header {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.toc-list {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-link {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.toc-link:hover, .toc-link.is-active {
  color: var(--secondary-blue);
  background-color: #FFFFFF;
  text-decoration: none;
  font-weight: 600;
}

.sidebar-widget {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.sidebar-widget-title {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 10px;
}

.sidebar-widget-text {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 14px;
}

/* ==========================================================================
   Filter Bars (Guides / Articles)
   ========================================================================== */

.filter-bar {
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.filter-categories {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--secondary-blue);
  color: var(--secondary-blue);
}

.filter-btn.is-active {
  background-color: var(--primary-navy);
  border-color: var(--primary-navy);
  color: #FFFFFF;
}

.filter-search-box {
  position: relative;
  min-width: 260px;
}

.filter-search-input {
  width: 100%;
  padding: 8px 14px 8px 36px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  outline: none;
}

.filter-search-input:focus {
  border-color: var(--secondary-blue);
}

.filter-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 64px 20px;
  background-color: var(--bg-alt);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin: 32px 0;
  display: none;
}

.empty-state.is-visible {
  display: block;
}

.empty-state-icon {
  font-size: 2.5rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.empty-state-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 8px;
}

.empty-state-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 20px;
}

/* ==========================================================================
   Static Editorial & Legal Pages (About, Standards, Contact, Privacy, Terms)
   ========================================================================== */

.page-header {
  background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-alt) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 48px 0;
}

.page-header-content {
  max-width: 800px;
}

.page-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.page-intro {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.editorial-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 56px;
  padding: 56px 0 80px;
}

@media (max-width: 900px) {
  .editorial-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.editorial-prose {
  max-width: var(--article-max);
}

.editorial-prose h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-top: 40px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.editorial-prose h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-top: 28px;
  margin-bottom: 12px;
}

.editorial-prose p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.editorial-prose ul {
  margin-bottom: 24px;
  padding-left: 24px;
}

.editorial-prose li {
  font-size: 1.05rem;
  line-height: 1.65;
  margin-bottom: 8px;
}

.editorial-sidebar-box {
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
}

.editorial-sidebar-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 14px;
}

/* ==========================================================================
   Contact Form Styles
   ========================================================================== */

.contact-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 8px;
}

.form-label .required {
  color: #DC2626;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--text-primary);
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  outline: none;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-help {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-error {
  display: none;
  font-size: 0.85rem;
  color: #DC2626;
  margin-top: 6px;
  font-weight: 500;
}

.form-group.has-error .form-input,
.form-group.has-error .form-textarea {
  border-color: #DC2626;
  background-color: #FEF2F2;
}

.form-group.has-error .form-error {
  display: block;
}

.form-status {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  font-size: 0.95rem;
  display: none;
}

.form-status.status-info {
  display: block;
  background-color: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E40AF;
}

.form-status.status-error {
  display: block;
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* ==========================================================================
   404 Page
   ========================================================================== */

.not-found-section {
  padding: 80px 0 100px;
  text-align: center;
}

.not-found-code {
  font-size: clamp(5rem, 10vw, 8rem);
  font-weight: 900;
  color: var(--primary-navy);
  line-height: 1;
  letter-spacing: -0.05em;
  margin-bottom: 16px;
  opacity: 0.85;
}

.not-found-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 16px;
}

.not-found-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.btn-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.96rem;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary-navy);
  color: #FFFFFF;
  border: 1px solid var(--primary-navy);
}

.btn-primary:hover {
  background-color: var(--secondary-blue);
  border-color: var(--secondary-blue);
  color: #FFFFFF;
  text-decoration: none;
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--primary-navy);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--secondary-blue);
  color: var(--secondary-blue);
  text-decoration: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  margin-top: auto;
  background-color: #0F172A;
  color: #94A3B8;
  border-top: 1px solid #1E293B;
  padding: 64px 0 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: #94A3B8;
  margin-bottom: 20px;
}

.footer-contact-info {
  font-size: 0.86rem;
  line-height: 1.6;
  color: #94A3B8;
  padding: 14px;
  background-color: #1E293B;
  border-radius: var(--radius-sm);
  border: 1px solid #334155;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-list a {
  color: #94A3B8;
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition);
}

.footer-nav-list a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-size: 0.82rem;
  line-height: 1.6;
}

.footer-disclaimer {
  color: #64748B;
  font-size: 0.82rem;
}

.footer-copyright {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: #64748B;
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background-color: var(--primary-navy);
  color: #FFFFFF;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 900;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
}