* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #f8f9ff;
  color: #111827;
  overflow-x: hidden;
}

/* ========== SKIP LINK ========== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #4f46ff;
  color: white;
  padding: 8px 16px;
  z-index: 1001;
  text-decoration: none;
  border-radius: 0 0 8px 0;
  font-weight: 500;
}

.skip-link:focus {
  top: 0;
  outline: none;
}

/* ========== NAVBAR STYLES ========== */
.navbar {
  height: 90px;
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 50px;
  border-bottom: 1px solid #ececf8;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  z-index: 1002;
}

.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6b5cff, #4338ff);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.logo h2 {
  font-size: 24px;
  background: linear-gradient(135deg, #6b5cff, #4338ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-menu li a {
  text-decoration: none;
  color: #333;
  padding: 10px 18px;
  display: block;
  transition: all 0.3s ease;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
}

.nav-menu li a:hover {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.nav-menu li.active a {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

/* CSS Only Hamburger */
.nav-toggle {
  display: none;
}

.hamburger {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid #ececf8;
  background: #ffffff;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1002;
  box-shadow: 0 8px 20px rgba(79, 70, 255, 0.08);
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: #4f46ff;
  border-radius: 20px;
  transition: all 0.3s ease;
}

/* Focus styles for accessibility */
.nav-menu li a:focus-visible,
.sidebar a:focus-visible,
.cta-button:focus-visible,
.comment-form button:focus-visible,
.social-links a:focus-visible,
.reply-btn:focus-visible,
.author-social a:focus-visible,
.share-btn:focus-visible,
.back-to-top:focus-visible,
.hamburger:focus-visible {
  outline: 2px solid #4f46ff;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== POST HEADER ========== */
.post-header {
  max-width: 900px;
  margin: 60px auto 40px;
  padding: 0 20px;
  text-align: center;
}

.post-category {
  margin-bottom: 20px;
}

.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.tag.update {
  background: #dbeafe;
  color: #1e40af;
}

.post-header h1 {
  font-size: 48px;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #081028;
}

.post-meta {
  display: flex;
  justify-content: center;
  gap: 25px;
  margin-bottom: 30px;
  color: #64748b;
  font-size: 14px;
}

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

.post-feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.post-feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========== POST CONTAINER ========== */
.post-container {
  max-width: 1200px;
  margin: 50px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 50px;
}

.post-content {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  border-radius: 24px;
  padding: 45px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.post-intro p {
  font-size: 18px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 20px;
}

/* ========== TABLE OF CONTENTS ========== */
.table-of-contents {
  background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
  padding: 28px;
  border-radius: 20px;
  margin: 30px 0;
  border-left: 4px solid #4f46ff;
}

.table-of-contents h3 {
  margin-bottom: 18px;
  font-size: 18px;
  color: #081028;
}

.table-of-contents ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.table-of-contents li a {
  text-decoration: none;
  color: #4f46ff;
  font-size: 14px;
  transition: all 0.3s ease;
  display: inline-block;
  position: relative;
}

.table-of-contents li a:hover {
  transform: translateX(5px);
}

.table-of-contents li a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #4f46ff;
  transition: width 0.3s ease;
}

.table-of-contents li a:hover::after {
  width: 100%;
}

.table-of-contents li a.active {
  color: #4f46ff;
  font-weight: 600;
  background: #ede9ff;
  padding: 5px 10px;
  border-radius: 8px;
  margin: -5px -10px;
}

/* ========== POST SECTIONS ========== */
.post-section {
  margin: 45px 0;
  animation: fadeIn 0.3s ease forwards;
}

.post-section h2 {
  font-size: 32px;
  margin-bottom: 20px;
  color: #081028;
  border-left: 4px solid #4f46ff;
  padding-left: 15px;
}

.post-section p {
  font-size: 16px;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 16px;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== PRINCIPLES GRID ========== */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 30px 0;
}

.principle-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 35px 25px;
  border-radius: 24px;
  text-align: center;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.principle-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(79, 70, 255, 0.1);
}

.principle-card i {
  font-size: 48px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.principle-card h3 {
  font-size: 24px;
  margin-bottom: 10px;
  color: #1e293b;
}

.principle-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== FEATURES GRID ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.feature-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.feature-card i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.feature-card h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== SPEED STATS ========== */
.speed-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 30px 0;
  text-align: center;
}

.stat-item {
  background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
  padding: 25px;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
}

.stat-number {
  font-size: 42px;
  font-weight: 800;
  color: #4f46ff;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: #475569;
}

/* ========== TIPS GRID ========== */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.tip-item {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.tip-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.tip-item i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.tip-item h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.tip-item p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== CREATIVE GRID ========== */
.creative-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.creative-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.creative-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.creative-card i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.creative-card h4 {
  font-size: 18px;
  margin-bottom: 15px;
}

.creative-card ul {
  list-style: none;
  padding: 0;
}

.creative-card li {
  padding: 6px 0;
  font-size: 13px;
  color: #475569;
  display: flex;
  align-items: center;
  gap: 8px;
}

.creative-card li::before {
  content: '✓';
  color: #4f46ff;
  font-weight: bold;
}

/* ========== COLLABORATION GRID ========== */
.collab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.collab-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.collab-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.collab-card i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.collab-card h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.collab-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== SECURITY GRID ========== */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.security-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.security-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.security-card i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.security-card h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.security-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== UX GRID ========== */
.ux-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.ux-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.ux-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.ux-card i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.ux-card h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.ux-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== CLOUD GRID ========== */
.cloud-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 25px 0;
}

.cloud-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 25px;
  border-radius: 20px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.cloud-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.cloud-card i {
  font-size: 36px;
  color: #4f46ff;
  margin-bottom: 15px;
}

.cloud-card h4 {
  font-size: 18px;
  margin-bottom: 10px;
}

.cloud-card p {
  font-size: 14px;
  margin-bottom: 0;
}

/* ========== INDUSTRY GRID ========== */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 25px 0;
}

.industry-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
  padding: 22px;
  border-radius: 16px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.industry-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(79, 70, 255, 0.1);
}

.industry-card i {
  font-size: 28px;
  color: #4f46ff;
  margin-bottom: 12px;
}

.industry-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.industry-card p {
  font-size: 13px;
  margin-bottom: 0;
}

/* ========== FUTURE GRID ========== */
.future-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 25px 0;
}

.future-item {
  background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
  padding: 14px 18px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.future-item:hover {
  transform: translateX(3px);
  background: linear-gradient(135deg, #f0f2ff 0%, #ffffff 100%);
}

.future-item i {
  color: #4f46ff;
  width: 24px;
}

/* ========== HIGHLIGHT BOX ========== */
.highlight-box {
  background: linear-gradient(135deg, #fef3c7 0%, #fffbeb 100%);
  padding: 20px 25px;
  border-radius: 16px;
  margin: 20px 0;
  border-left: 4px solid #f59e0b;
  transition: all 0.3s ease;
}

.highlight-box:hover {
  transform: translateX(3px);
}

.highlight-box i {
  font-size: 20px;
  color: #f59e0b;
  margin-right: 10px;
}

/* ========== CTA BOX ========== */
.cta-box {
  background: linear-gradient(135deg, #f8f9ff 0%, #ede9ff 100%);
  padding: 35px;
  border-radius: 24px;
  text-align: center;
  margin: 30px 0;
  transition: all 0.3s ease;
}

.cta-box:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.cta-box .highlight {
  background: rgba(255, 255, 255, 0.8);
  padding: 12px;
  border-radius: 12px;
  margin: 15px 0;
  font-weight: 600;
}

.cta-button {
  display: inline-block;
  margin-top: 20px;
  padding: 14px 32px;
  background: linear-gradient(135deg, #6b5cff, #4338ff);
  color: white;
  text-decoration: none;
  border-radius: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(107, 92, 255, 0.3);
}

/* ========== SHARE BUTTONS ========== */
.share-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin: 30px 0 20px;
  padding: 15px;
  background: linear-gradient(135deg, #f8f9ff, #ffffff);
  border-radius: 60px;
  border: 1px solid #eef2ff;
}

.share-label {
  font-size: 14px;
  color: #64748b;
  margin-right: 5px;
}

.share-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  text-decoration: none;
}

.share-btn.facebook { background: #1877f2; color: white; }
.share-btn.twitter { background: #1da1f2; color: white; }
.share-btn.linkedin { background: #0077b5; color: white; }
.share-btn.copy { background: #4f46ff; color: white; }

.share-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

/* ========== AUTHOR BIO ========== */
.author-bio {
  display: flex;
  gap: 25px;
  padding: 28px;
  background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
  border-radius: 20px;
  margin: 45px 0;
  transition: all 0.3s ease;
}

.author-bio:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.author-bio img {
  width: 85px;
  height: 85px;
  border-radius: 50%;
  object-fit: cover;
}

.author-bio h4 {
  font-size: 18px;
  margin-bottom: 8px;
}

.author-bio p {
  font-size: 14px;
  color: #475569;
  margin-bottom: 12px;
  line-height: 1.6;
}

.author-social a {
  color: #4f46ff;
  margin-right: 15px;
  font-size: 18px;
  transition: all 0.3s ease;
  display: inline-block;
}

.author-social a:hover {
  transform: translateY(-2px);
}

/* ========== COMMENTS SECTION ========== */
.comments-section {
  margin-top: 45px;
  padding-top: 30px;
  border-top: 1px solid #e2e8f0;
}

.comments-section h3 {
  margin-bottom: 25px;
  font-size: 22px;
}

.comment {
  display: flex;
  gap: 18px;
  margin-bottom: 25px;
  padding-bottom: 25px;
  border-bottom: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}

.comment:hover {
  transform: translateX(5px);
}

.comment img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.comment h4 {
  font-size: 16px;
  margin-bottom: 5px;
}

.comment span {
  font-size: 12px;
  color: #64748b;
}

.comment p {
  margin: 10px 0;
  font-size: 14px;
  line-height: 1.6;
}

.reply-btn {
  background: none;
  border: none;
  color: #4f46ff;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.reply-btn:hover {
  transform: translateX(5px);
  color: #4338ff;
}

.comment-form {
  margin-top: 30px;
}

.comment-form h4 {
  margin-bottom: 15px;
  font-size: 18px;
}

.comment-form textarea {
  width: 100%;
  padding: 15px;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  resize: vertical;
  font-family: inherit;
  margin-bottom: 15px;
  background: #fafbff;
  transition: all 0.3s ease;
}

.comment-form textarea:focus {
  outline: none;
  border-color: #4f46ff;
  box-shadow: 0 0 0 3px rgba(79, 70, 255, 0.1);
}

.comment-form button {
  padding: 12px 30px;
  background: linear-gradient(135deg, #6b5cff, #4338ff);
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.comment-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(107, 92, 255, 0.3);
}

/* ========== SIDEBAR ========== */
.post-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sidebar-widget {
  background: white;
  border-radius: 20px;
  padding: 25px;
  margin-bottom: 25px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  border: 1px solid #eef2ff;
  transition: all 0.3s ease;
}

.sidebar-widget:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.sidebar-widget h3 {
  margin-bottom: 20px;
  font-size: 18px;
  color: #081028;
}

.search-box {
  position: relative;
}

.search-box i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: #94a3b8;
}

.search-box input {
  width: 100%;
  padding: 12px 15px 12px 42px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  outline: none;
  background: #fafbff;
  transition: all 0.3s ease;
}

.search-box input:focus {
  border-color: #4f46ff;
  box-shadow: 0 0 0 3px rgba(79, 70, 255, 0.1);
}

.popular-post {
  display: flex;
  gap: 12px;
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}

.popular-post:hover {
  transform: translateX(5px);
}

.popular-post:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.popular-post img {
  width: 70px;
  height: 70px;
  border-radius: 12px;
  object-fit: cover;
}

.popular-post h4 {
  font-size: 14px;
  margin-bottom: 5px;
  line-height: 1.4;
}

.popular-post span {
  font-size: 12px;
  color: #64748b;
}

.categories {
  list-style: none;
}

.categories li {
  padding: 10px 0;
  border-bottom: 1px solid #e2e8f0;
}

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

.categories a {
  text-decoration: none;
  color: #475569;
  display: flex;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.categories a:hover {
  color: #4f46ff;
  transform: translateX(3px);
}

.newsletter-widget input {
  width: 100%;
  padding: 12px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  margin-bottom: 12px;
  background: #fafbff;
  transition: all 0.3s ease;
}

.newsletter-widget input:focus {
  outline: none;
  border-color: #4f46ff;
  box-shadow: 0 0 0 3px rgba(79, 70, 255, 0.1);
}

.newsletter-widget button {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #6b5cff, #4338ff);
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.newsletter-widget button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(107, 92, 255, 0.3);
}

/* ========== RELATED POSTS ========== */
.related-posts {
  max-width: 1200px;
  margin: 50px auto;
  padding: 0 20px;
}

.related-posts h2 {
  font-size: 28px;
  margin-bottom: 30px;
  color: #081028;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.related-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.related-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.related-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.related-card h4 {
  padding: 18px 18px 8px;
  font-size: 16px;
  line-height: 1.4;
}

.related-card a {
  display: inline-block;
  margin: 0 18px 18px;
  text-decoration: none;
  color: #4f46ff;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s ease;
}

.related-card a:hover {
  transform: translateX(5px);
}

/* ========== FOOTER ========== */
.footer {
  background: #1a1a2e;
  color: #cbd5e1;
  margin-top: 80px;
  padding: 50px 5% 30px;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
}

.footer-logo i {
  font-size: 28px;
  color: #4f46ff;
}

.footer-logo h3 {
  color: white;
  font-size: 22px;
  margin: 0;
}

.footer-section p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer-section h3 {
  color: white;
  font-size: 18px;
  margin-bottom: 20px;
}

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

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

.footer-section a {
  color: #cbd5e1;
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-section a:hover {
  color: #4f46ff;
  padding-left: 5px;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.social-links a {
  color: #cbd5e1;
  font-size: 20px;
  transition: all 0.3s ease;
}

.social-links a:hover {
  color: #4f46ff;
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid #334155;
  font-size: 13px;
}

/* ========== BACK TO TOP BUTTON ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6b5cff, #4338ff);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 5px 15px rgba(107, 92, 255, 0.3);
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(107, 92, 255, 0.4);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1200px) {
  .navbar {
    padding: 0 28px;
  }

  .nav-menu {
    gap: 10px;
  }

  .nav-menu li a {
    padding: 10px 12px;
    font-size: 14px;
  }
}

@media (max-width: 1024px) {
  .post-container { grid-template-columns: 1fr; }
  .post-sidebar { position: static; }
  .principles-grid, .features-grid, .tips-grid, .creative-grid,
  .collab-grid, .security-grid, .ux-grid, .cloud-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .speed-stats { grid-template-columns: repeat(3, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
  .navbar {
    height: 76px;
    padding: 0 20px;
    flex-direction: row;
  }

  .logo h2 {
    font-size: 21px;
  }

  .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 21px;
  }

  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    padding: 0 20px;
    border-bottom: 1px solid #ececf8;
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.12);
    transition: all 0.35s ease;
  }

  .nav-toggle:checked ~ .nav-menu {
    max-height: 80vh;
    visibility: visible;
    opacity: 1;
    padding: 16px 20px 22px;
  }

  .nav-menu li a {
    text-align: center;
    padding: 13px 15px;
    border-radius: 12px;
  }

  .nav-toggle:checked + .hamburger span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-toggle:checked + .hamburger span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked + .hamburger span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

@media (max-width: 768px) {
  .post-header h1 { font-size: 32px; }
  .post-content { padding: 25px; }
  .table-of-contents ul { grid-template-columns: 1fr; }
  .principles-grid, .features-grid, .tips-grid, .creative-grid,
  .collab-grid, .security-grid, .ux-grid, .cloud-grid {
    grid-template-columns: 1fr;
  }
  .speed-stats { grid-template-columns: 1fr; gap: 15px; }
  .industry-grid { grid-template-columns: 1fr; }
  .future-grid { grid-template-columns: 1fr; }
  .author-bio { flex-direction: column; text-align: center; }
  .author-bio img { margin: 0 auto; }
  .comment { flex-direction: column; text-align: center; }
  .comment img { margin: 0 auto; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; text-align: center; }
  .footer-logo { justify-content: center; }
  .social-links { justify-content: center; }
  .share-buttons { flex-wrap: wrap; }
  .back-to-top { bottom: 20px; right: 20px; width: 45px; height: 45px; font-size: 18px; }
}

@media (max-width: 480px) {
  .navbar {
    padding: 0 14px;
  }

  .logo {
    gap: 10px;
  }

  .logo h2 {
    font-size: 19px;
  }

  .post-header h1 { font-size: 28px; }
  .post-section h2 { font-size: 26px; }
  .cta-box { padding: 25px; }
  .principle-card h3 { font-size: 20px; }
  .stat-number { font-size: 32px; }
}

/* ========== PRINT STYLES ========== */
@media print {
  .navbar, .footer, .sidebar, .related-posts, .skip-link, .back-to-top, .share-buttons {
    display: none;
  }
  .post-content { padding: 0; box-shadow: none; }
  .post-container { display: block; }
  body { background: white; }
  .post-header h1 { font-size: 28px; }
  .comment-form { display: none; }
  .table-of-contents { break-inside: avoid; }
  .post-section { break-inside: avoid; }
}

/* ========== SELECTION COLOR ========== */
::selection { background: #4f46ff; color: white; }
::-moz-selection { background: #4f46ff; color: white; }