/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-dark: #0a0a0a;
  --bg-darker: #050505;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --accent: #00ff88;
  --accent-hover: #00cc6f;
  --border: #1a1a1a;
  --card-bg: #111111;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 20px 0;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.lang-switcher {
  position: relative;
  cursor: pointer;
}

.lang-current {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 14px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s;
}

.lang-switcher:hover .lang-current {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

.lang-switcher:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
}

.lang-dropdown a {
  display: block;
  padding: 8px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.2s;
  white-space: nowrap;
}

.lang-dropdown a:hover {
  background: var(--border);
  color: var(--text-primary);
}

.cta-button {
  background: var(--accent) !important;
  color: var(--bg-dark) !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.2s;
  text-decoration: none;
  font-size: 14px;
}

.cta-button:hover {
  background: var(--accent-hover) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
}

/* Main Content */
main {
  margin-top: 80px;
  min-height: calc(100vh - 400px);
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  text-align: center;
}

.hero h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -2px;
  background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  padding: 60px 0;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  transition: all 0.3s;
}

.stat-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Posts Grid */
.posts-section {
  padding: 80px 0;
}

.section-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 48px;
  letter-spacing: -1px;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 32px;
  margin-bottom: 60px;
}

.post-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s;
  text-decoration: none;
  display: block;
}

.post-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 255, 136, 0.1);
}

.post-card-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.post-card-excerpt {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.post-card-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 14px;
  color: var(--text-secondary);
}

.post-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.tag {
  background: var(--border);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

/* Single Post */
.post-single {
  padding: 60px 0 80px;
}

.post-header {
  margin-bottom: 48px;
}

.post-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

.post-meta {
  display: flex;
  gap: 24px;
  align-items: center;
  color: var(--text-secondary);
  font-size: 15px;
  flex-wrap: wrap;
}

.post-author {
  font-weight: 500;
}

.post-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.post-content h1,
.post-content h2,
.post-content h3 {
  color: var(--text-primary);
  font-weight: 700;
  margin: 48px 0 24px;
  line-height: 1.3;
}

.post-content h2 {
  font-size: 36px;
}

.post-content h3 {
  font-size: 28px;
}

.post-content p {
  margin-bottom: 24px;
}

.post-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  transition: all 0.2s;
}

.post-content a:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}

.post-content ul,
.post-content ol {
  margin: 24px 0;
  padding-left: 24px;
}

.post-content li {
  margin-bottom: 12px;
}

.post-content code {
  background: var(--card-bg);
  padding: 3px 8px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 16px;
  color: var(--accent);
}

.post-content pre {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  overflow-x: auto;
  margin: 32px 0;
}

.post-content pre code {
  background: none;
  padding: 0;
  color: var(--text-secondary);
}

.post-footer {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.back-link:hover {
  color: var(--accent);
}

/* Footer */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
  margin-top: 80px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 15px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-column h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.footer-column li {
  margin-bottom: 12px;
}

.footer-column a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-lang-switcher {
  display: flex;
  gap: 12px;
}

.lang-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.lang-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

@media (max-width: 768px) {
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
}

/* Highlight Boxes (Insights) */
.highlight-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 32px 0;
  position: relative;
}

.highlight-box strong {
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
  display: block;
  margin-bottom: 8px;
}

.highlight-box p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* CTA Box */
.cta-box {
  background: linear-gradient(135deg, var(--card-bg) 0%, #0d0d0d 100%);
  border: 2px solid var(--accent);
  border-radius: 16px;
  padding: 40px;
  margin: 48px 0;
  text-align: center;
}

.cta-box-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.cta-box-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.cta-box .cta-button {
  display: inline-block;
  font-size: 16px;
  padding: 14px 32px;
}

/* Author Card */
.author-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  margin: 48px 0;
  display: flex;
  align-items: center;
  gap: 24px;
}

.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  object-fit: cover;
  flex-shrink: 0;
}

.author-info h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.author-role {
  font-size: 14px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.author-bio {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.author-contact {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.author-contact a {
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Case Study Cards */
.case-studies {
  margin: 60px 0;
}

.case-study-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 32px;
  transition: all 0.3s;
}

.case-study-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.case-study-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.case-study-icon {
  font-size: 32px;
}

.case-study-category {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.case-study-problem {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-left: 20px;
  border-left: 3px solid #ff4444;
}

.case-study-problem strong {
  color: #ff4444;
  display: block;
  margin-bottom: 4px;
}

.case-study-solution {
  font-size: 15px;
  color: var(--text-secondary);
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}

.case-study-solution strong {
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}

.case-study-results {
  display: flex;
  gap: 24px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.result-metric {
  text-align: center;
}

.result-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

.result-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Data Tables */
.data-table {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin: 32px 0;
}

.data-table h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.data-table ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.data-table li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.data-table li:last-child {
  border-bottom: none;
}

.data-label {
  color: var(--text-secondary);
  font-size: 15px;
}

.data-value {
  color: var(--accent);
  font-weight: 700;
  font-size: 18px;
}

/* FAQ Section */
.faq-section {
  margin: 60px 0;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 28px;
  margin-bottom: 16px;
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: var(--accent);
}

.faq-question {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.faq-question::before {
  content: "Q";
  color: var(--accent);
  font-weight: 800;
  font-size: 20px;
  flex-shrink: 0;
}

.faq-answer {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 32px;
}

/* Hero Image */
.post-hero-image {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: 16px;
  margin: 32px 0;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  padding: 12px 0;
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.breadcrumbs span {
  color: var(--border);
}

/* Location Tags */
.location-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0;
}

.location-tag {
  background: var(--border);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.location-tag:hover {
  background: var(--accent);
  color: var(--bg-dark);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    gap: 16px;
  }
  
  .nav-links a {
    font-size: 14px;
  }
  
  .hero h1 {
    font-size: 40px;
  }
  
  .hero p {
    font-size: 18px;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .post-title {
    font-size: 36px;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .author-card {
    flex-direction: column;
    text-align: center;
  }
  
  .case-study-results {
    flex-direction: column;
    gap: 16px;
  }
  
  .cta-box {
    padding: 32px 24px;
  }
  
  .cta-box-title {
    font-size: 24px;
  }
}

/* Consultation Section */
.consultation-section {
  padding: 80px 0;
  background: var(--bg-darker);
}

.consultation-card {
  display: flex;
  align-items: center;
  gap: 60px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 60px;
  max-width: 1000px;
  margin: 0 auto;
}

.author-avatar-large {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 4px solid var(--accent);
  object-fit: cover;
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.2);
}

.consultation-content {
  flex: 1;
}

.consultation-content .section-title {
  margin-bottom: 24px;
  font-size: 36px;
}

.consultation-text {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .consultation-card {
    flex-direction: column;
    text-align: center;
    padding: 40px 24px;
    gap: 32px;
  }

  .author-avatar-large {
    width: 150px;
    height: 150px;
  }
}

/* Mobile Menu Overlay */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--bg-darker);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    transition: all 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 1000;
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 20px;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  body.menu-open {
    overflow: hidden;
  }
}