/* ==========================================================================
   LOMBLOG MODERN DESIGN SYSTEM (Vanilla CSS)
   Optimized for Readability, Performance, E-E-A-T & Google AdSense Compliance
   ========================================================================== */

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #059669;
  --accent-light: #ecfdf5;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --bg-main: #ffffff;
  --bg-alt: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --border-focus: #93c5fd;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --max-w-content: 780px;
  --max-w-site: 1200px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Layout Utilities */
.container {
  max-width: var(--max-w-site);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: var(--max-w-content);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.site-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.brand-logo span.logo-highlight {
  color: var(--primary);
}

.brand-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  padding: 6px 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #ffffff !important;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
  transition: var(--transition);
}

.btn-cta:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-dark);
  cursor: pointer;
  padding: 4px;
}

/* Hero Section */
.hero-section {
  padding: 64px 0 48px;
  background: radial-gradient(circle at 50% 0%, #f1f5f9 0%, #ffffff 70%);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.2;
  letter-spacing: -1px;
  max-width: 820px;
  margin: 0 auto 16px;
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, #1e40af, #2563eb, #0284c7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

/* Search Bar */
.search-wrapper {
  max-width: 580px;
  margin: 0 auto 28px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 16px 20px 16px 48px;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #ffffff;
  color: var(--text-dark);
  box-shadow: var(--shadow-md);
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Category Filter Pills */
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 10px;
}

.pill-item {
  display: inline-block;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  transition: var(--transition);
}

.pill-item:hover, .pill-item.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* Article Cards Grid */
.articles-section {
  padding: 56px 0;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 4px;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

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

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.card-thumb-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #f1f5f9;
  position: relative;
}

.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.article-card:hover .card-thumb {
  transform: scale(1.05);
}

.card-category-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(6px);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 12px;
}

.card-title a {
  color: var(--text-dark);
}

.card-title a:hover {
  color: var(--primary);
}

.card-excerpt {
  color: var(--text-body);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

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

.card-author-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-dark);
}

.author-mini-avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

/* Card CTA Action Button */
.card-action {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.btn-read-guide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  box-sizing: border-box;
  padding: 9px 14px;
  background: var(--bg-alt);
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-read-guide:hover {
  background: #eff6ff;
  border-color: #93c5fd;
  color: var(--primary-hover);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.08);
}

.read-guide-arrow {
  display: inline-block;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-read-guide:hover .read-guide-arrow,
.article-card:hover .read-guide-arrow {
  transform: translateX(4px);
}

/* High Value Career Toolkits Grid (Homepage Features) */
.toolkits-banner {
  background: #0f172a;
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 48px;
  margin: 40px 0;
  position: relative;
  overflow: hidden;
}

.toolkits-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37,99,235,0.25) 0%, rgba(15,23,42,0) 70%);
  pointer-events: none;
}

.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.toolkit-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.toolkit-box:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.toolkit-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.toolkit-box h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}

.toolkit-box p {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.5;
}

/* ==========================================================================
   ARTICLE PAGE TYPOGRAPHY & E-E-A-T
   ========================================================================== */

.article-header {
  padding: 48px 0 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-h1 {
  font-size: 2.65rem;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.25;
  letter-spacing: -0.75px;
  margin-bottom: 20px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  padding-top: 12px;
}

.author-pill {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-pill img {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 2px solid var(--primary-light);
}

.author-name {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.95rem;
}

.author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.meta-details {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Article Body Typography */
.article-content {
  font-size: 1.12rem;
  line-height: 1.85;
  color: var(--text-body);
}

.article-content p {
  margin-bottom: 1.5em;
}

.article-content h2 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-dark);
  margin: 2em 0 0.8em;
  letter-spacing: -0.5px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}

.article-content h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 1.6em 0 0.6em;
  letter-spacing: -0.3px;
}

.article-content ul, .article-content ol {
  margin: 0 0 1.6em 1.5em;
}

.article-content li {
  margin-bottom: 0.5em;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-alt);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 2em 0;
  font-style: italic;
  color: var(--text-dark);
}

.article-content pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 2em 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 0.95rem;
}

.article-content th {
  background: var(--bg-alt);
  font-weight: 700;
  color: var(--text-dark);
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border);
}

.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.article-content tr:last-child td {
  border-bottom: none;
}

/* E-E-A-T Author Box */
.author-box-card {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-left: 5px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin: 48px 0;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.author-box-card img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  border: 3px solid #ffffff;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.author-box-content h4 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.author-box-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 10px;
}

.author-box-content p {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.6;
  margin: 0;
}



/* Featured On Backlinks Banner */
.featured-on-wrap {
  background: #ffffff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 44px 0 48px;
  text-align: center;
  overflow: hidden;
  position: relative;
}

.featured-on-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-dark);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 28px;
}

/* Infinite Responsive Marquee Slider */
.badges-slider-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  padding: 10px 0;
  mask-image: linear-gradient(to right, transparent, black 6%, black 94%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 6%, black 94%, transparent);
}

.badges-slider-track {
  display: flex;
  gap: 20px;
  align-items: center;
  width: max-content;
  animation: infiniteBadgeScroll 55s linear infinite;
  will-change: transform;
}

.badges-slider-container:hover .badges-slider-track {
  animation-play-state: paused;
}

@keyframes infiniteBadgeScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.featured-badge-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  transition: all 0.25s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
  flex-shrink: 0;
}

.featured-badge-item:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.featured-badge-item img {
  height: 40px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  display: block;
}

@media (max-width: 768px) {
  .featured-on-wrap {
    padding: 32px 0 38px;
  }
  .featured-on-title {
    font-size: 1rem;
    margin-bottom: 20px;
  }
  .badges-slider-track {
    gap: 14px;
    animation-duration: 40s;
  }
  .featured-badge-item {
    padding: 6px 12px;
  }
  .featured-badge-item img {
    height: 34px;
    max-width: 160px;
  }
}

/* Social Media Buttons */
.footer-social-links {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  text-decoration: none;
  color: #ffffff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.social-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.social-fb {
  background: #1877f2;
}

.social-x {
  background: #000000;
  border: 1px solid #334155;
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 64px 0 32px;
  border-top: 1px solid #1e293b;
}

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

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.footer-brand p {
  font-size: 0.92rem;
  line-height: 1.6;
  max-width: 360px;
}

.footer-col h5 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -0.2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: #94a3b8;
  font-size: 0.92rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

/* Responsive Styles */
@media (max-width: 900px) {
  .hero-title {
    font-size: 2.15rem;
  }
  .article-h1 {
    font-size: 2rem;
  }
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 600px) {
  .hero-title {
    font-size: 1.85rem;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .author-box-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}