* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #ec4899;
  --dark: #1e293b;
  --darker: #0f172a;
  --light: #f1f5f9;
  --gray: #64748b;
  --border: #e2e8f0;
  --shadow: rgba(0, 0, 0, 0.2);
  --gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
  --body-bg: #0f172a;
  --card-bg: #1e293b;
  --text-light: #cbd5e1;
  --text-muted: #94a3b8;
  --border-dark: #334155;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-light);
  background: var(--body-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
header {
  background: var(--darker);
  color: white;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px var(--shadow);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 500;
}

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

.mobile-menu {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: var(--gradient);
  color: white;
  padding: 4rem 2rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 5px solid white;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--gradient);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: transform 0.3s, box-shadow 0.3s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
  flex: 1;
}

/* Utility Classes for About Page */
.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.max-w-4xl {
  max-width: 56rem;
}

.max-w-lg {
  max-width: 32rem;
}

.px-6 {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.py-20 {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.pt-4 {
  padding-top: 1rem;
}

.pt-6 {
  padding-top: 1.5rem;
}

.mb-3 {
  margin-bottom: 0.75rem;
}

.mb-6 {
  margin-bottom: 1.5rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mb-12 {
  margin-bottom: 3rem;
}

.mb-16 {
  margin-bottom: 4rem;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-6 {
  gap: 1.5rem;
}

.gap-8 {
  gap: 2rem;
}

.gap-12 {
  gap: 3rem;
}

.space-y-4 > * + * {
  margin-top: 1rem;
}

.space-y-6 > * + * {
  margin-top: 1.5rem;
}

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

.text-left {
  text-align: left;
}

.leading-relaxed {
  line-height: 1.625;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-start {
  justify-content: flex-start;
}

.grid {
  display: grid;
}

.relative {
  position: relative;
}

.overflow-hidden {
  overflow: hidden;
}

@media (min-width: 640px) {
  .sm\:flex-row {
    flex-direction: row;
  }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .md\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .md\:col-span-1 {
    grid-column: span 1 / span 1;
  }

  .md\:col-span-2 {
    grid-column: span 2 / span 2;
  }

  .md\:order-1 {
    order: 1;
  }

  .md\:order-2 {
    order: 2;
  }

  .md\:text-left {
    text-align: left;
  }

  .md\:justify-start {
    justify-content: flex-start;
  }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Section Styles */
.section {
  display: block;
  animation: fadeIn 0.5s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: white;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
}

/* Blog Grid */
.filter-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  background: var(--card-bg);
  border: 2px solid var(--border-dark);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 500;
  color: var(--text-light);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border-dark);
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.blog-card-header {
  background: var(--gradient);
  color: white;
  padding: 1.5rem;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

.blog-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: white;
}

.blog-date {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.blog-card-body {
  padding: 1.5rem;
  color: var(--text-light);
}

.blog-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Dark About Section */
.about-dark {
  background: #0f172a;
  color: #cbd5e1;
  min-height: 100vh;
}

/* Glassmorphism Effect - Dark Theme */
.glass {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(to right, #6366f1, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal.delay-100 {
  transition-delay: 0.1s;
}

.reveal.delay-200 {
  transition-delay: 0.2s;
}

/* Custom Scrollbar for Dark Theme */
.about-dark ::-webkit-scrollbar {
  width: 8px;
}

.about-dark ::-webkit-scrollbar-track {
  background: #0f172a;
}

.about-dark ::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 4px;
}

.about-dark ::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* About Hero Section - Dark */
.about-hero-dark {
  background: #0f172a;
  position: relative;
  min-height: auto;
  padding: 6rem 0 4rem;
}

@media (min-width: 768px) {
  .about-hero-dark {
    min-height: 100vh;
    padding: 0;
  }
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(128px);
  opacity: 0.2;
  mix-blend-mode: multiply;
  animation: blob-animate 20s infinite;
}

.blob-1 {
  top: 20%;
  left: -10%;
  width: 288px;
  height: 288px;
  background: #6366f1;
}

.blob-2 {
  bottom: 20%;
  right: -10%;
  width: 288px;
  height: 288px;
  background: #ec4899;
  animation-delay: 2s;
}

@keyframes blob-animate {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -50px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

.about-badge-dark {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #6366f1;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.about-title-dark {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .about-title-dark {
    font-size: 3rem;
  }
}

@media (min-width: 768px) {
  .about-title-dark {
    font-size: 4.5rem;
  }
}

.about-subtitle-dark {
  font-size: 1.125rem;
  color: #94a3b8;
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .about-subtitle-dark {
    margin: 0;
  }
}

.btn-hero {
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-weight: 700;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  min-width: 140px;
}

.btn-primary {
  background: white;
  color: #0f172a;
}

.btn-primary:hover {
  background: #e2e8f0;
}

.btn-outline {
  border: 1px solid #475569;
  color: #cbd5e1;
}

.btn-outline:hover {
  border-color: white;
  color: white;
}

.social-icon {
  font-size: 1.25rem;
  color: #94a3b8;
  transition: all 0.3s;
  text-decoration: none;
}

.social-icon:hover {
  color: white;
  transform: translateY(-4px);
}

.social-icon:hover .fa-github {
  color: white;
}

.social-icon:hover .fa-linkedin {
  color: #3b82f6;
}

.social-icon:hover .fa-twitter {
  color: #0ea5e9;
}

/* Avatar Section - Dark */
.avatar-container {
  position: relative;
  width: 256px;
  height: 256px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .avatar-container {
    width: 384px;
    height: 384px;
    margin: 0;
  }
}

.avatar-glow-dark {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, #6366f1, #ec4899);
  border-radius: 50%;
  filter: blur(30px);
  opacity: 0.3;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.05);
  }
}

.avatar-image-dark {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid transparent;
  background: linear-gradient(#1e293b, #1e293b) padding-box,
    linear-gradient(to right, #6366f1, #ec4899) border-box;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: avatar-float 4s ease-in-out infinite;
  display: block;
}

@keyframes avatar-float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.avatar-badge-dark {
  position: absolute;
  bottom: 2rem;
  right: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Stats Section - Dark */
.stat-number-dark {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  line-height: 1;
}

.stat-label-dark {
  color: #94a3b8;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.section-title-dark {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 2rem;
  line-height: 1.2;
}

@media (min-width: 768px) {
  .section-title-dark {
    font-size: 2.5rem;
  }
}

.text-primary {
  color: #6366f1;
}

.text-secondary {
  color: #ec4899;
}

/* About Content Text - Fix overflow */
.about-content-text {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  max-width: 100%;
}

.about-content-text p {
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  margin-bottom: 1rem;
}

/* Glass card with proper padding */
.glass.p-8 {
  padding: 2rem;
}

@media (min-width: 768px) {
  .glass.p-8 {
    padding: 2rem;
  }
}

.glass.rounded-3xl {
  border-radius: 24px;
}

/* Grid gap fix */
.grid.md\:grid-cols-3.gap-8 {
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid.md\:grid-cols-3.gap-8 {
    gap: 2rem;
  }
}

.hobby-tag {
  padding: 0.5rem 1rem;
  border-radius: 50px;
  background: #1e293b;
  font-size: 0.75rem;
  border: 1px solid #334155;
  color: #cbd5e1;
  white-space: nowrap;
}

/* Main Content */
.about-main-content {
  padding: 3rem;
  border-radius: 16px;
  margin-bottom: 3rem;
}

.about-text-content {
  max-width: 800px;
  margin: 0 auto;
}

.section-title-modern {
  font-size: 2rem;
  font-weight: 700;
  color: var(--darker);
  margin-bottom: 2rem;
}

.about-description {
  color: var(--gray);
  line-height: 1.8;
}

.about-description h2 {
  font-size: 1.5rem;
  color: var(--darker);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.about-description h3 {
  font-size: 1.25rem;
  color: var(--darker);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.about-description ul,
.about-description ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

.about-description li {
  margin-bottom: 0.5rem;
}

/* Skills Section - Dark */
.skill-card-dark {
  padding: 1.5rem;
  border-radius: 16px;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
}

.skill-card-dark:hover {
  background: #1e293b;
  transform: translateY(-2px);
}

.skill-icon-dark {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
  transition: transform 0.3s;
}

.skill-html {
  color: #f97316;
}

.skill-js {
  color: #eab308;
}

.skill-react {
  color: #60a5fa;
}

.skill-tailwind {
  color: #06b6d4;
}

.skill-node {
  color: #22c55e;
}

.skill-git {
  color: #a855f7;
}

.skill-figma {
  color: #ec4899;
}

.skill-responsive {
  color: white;
}

.skill-card-dark:hover .skill-icon-dark {
  transform: scale(1.1);
}

.skill-card-dark h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: white;
  margin: 0;
  line-height: 1.4;
}

/* Projects Section - Dark */
.project-card {
  border-radius: 16px;
  overflow: hidden;
  background: #1e293b;
  border: 1px solid #334155;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(99, 102, 241, 0.5);
}

.project-image {
  height: 160px;
  background: #334155;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  font-size: 2.5rem;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(99, 102, 241, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-btn {
  width: 50px;
  height: 50px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6366f1;
  text-decoration: none;
  transition: transform 0.3s;
}

.project-btn:hover {
  transform: scale(1.1);
}

.project-btn:last-child {
  background: #0f172a;
  color: white;
}

.project-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.project-description {
  color: #94a3b8;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: #334155;
  color: #6366f1;
}

/* Contact Section - Dark */
.contact-info-wrapper {
  max-width: 100%;
}

.contact-info-wrapper .section-title-dark {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .contact-info-wrapper .section-title-dark {
    font-size: 2rem;
  }
}

.contact-item-dark {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: #cbd5e1;
}

.contact-text {
  line-height: 1.5;
  flex: 1;
  min-width: 0;
  word-wrap: break-word;
}

@media (min-width: 640px) {
  .contact-text {
    white-space: nowrap;
  }
}

.contact-icon-dark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #1e293b;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6366f1;
  flex-shrink: 0;
}

.form-input-dark {
  width: 100%;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 0.75rem 1rem;
  color: white;
  font-family: inherit;
  font-size: 0.875rem;
  transition: all 0.3s;
}

.form-input-dark::placeholder {
  color: #64748b;
}

.form-input-dark:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 1px #6366f1;
}

.btn-submit-dark {
  width: 100%;
  background: linear-gradient(to right, #6366f1, #ec4899);
  color: white;
  font-weight: 700;
  padding: 0.75rem;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.btn-submit-dark:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
  .about-title {
    font-size: 2rem;
  }

  .about-avatar-modern {
    width: 200px;
    height: 200px;
  }

  .avatar-image {
    font-size: 4rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .about-main-content,
  .about-contact {
    padding: 2rem 1.5rem;
  }
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.skill-tag {
  padding: 0.5rem 1rem;
  background: var(--light);
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--dark);
}

/* Certificates Grid */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

.cert-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  transition: transform 0.3s;
  border: 1px solid var(--border-dark);
}

.cert-card:hover {
  transform: translateY(-5px);
}

.cert-image {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.cert-body {
  padding: 1.5rem;
}

.cert-body h3 {
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.cert-year {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Certificate Card Link */
.cert-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.cert-card-link:hover .cert-card {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.cert-title-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.cert-icon {
  font-size: 1.5rem;
  display: inline-block;
  flex-shrink: 0;
}

.cert-name {
  margin: 0;
  color: var(--text-light);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 600;
}

.cert-card-link {
  text-decoration: none;
}

.cert-card-link .cert-name {
  text-decoration: none;
  border-bottom: none;
}

.cert-year {
  text-align: center;
  margin-bottom: 1rem;
}

.cert-actions {
  margin-top: 1rem;
  text-align: center;
}

/* Certificate Detail Page */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  text-decoration: none;
  margin-bottom: 2rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s;
  background: rgba(59, 130, 246, 0.1);
}

.back-link:hover {
  color: var(--darker);
  background: rgba(59, 130, 246, 0.15);
  transform: translateX(-3px);
}

.cert-detail-header {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
  border: 1px solid var(--border-dark);
}

.cert-detail-image {
  display: flex;
  align-items: center;
  justify-content: center;
  position: sticky;
  top: 2rem;
}

.cert-badge-image {
  max-width: 100%;
  max-height: 350px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.cert-badge-placeholder {
  width: 280px;
  height: 280px;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.cert-detail-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.cert-detail-title {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.cert-title-icon {
  font-size: 2.5rem;
}

.cert-detail-title h1 {
  margin: 0;
  color: var(--text-light);
  font-size: 2rem;
}

.cert-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: var(--text-muted);
}

.cert-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cert-credly-link {
  align-self: flex-start;
  margin-top: 0.5rem;
}

.cert-detail-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.cert-description-section,
.cert-skills-section,
.cert-criteria-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-dark);
}

.cert-description-section h2,
.cert-skills-section h2,
.cert-criteria-section h2 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: white;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cert-description-section p,
.cert-criteria-section p {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

.cert-skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.skill-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 8px;
  border-left: 4px solid var(--primary);
  transition: transform 0.2s, box-shadow 0.2s;
}

.skill-badge:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.skill-check {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.skill-name {
  color: var(--text-light);
  font-weight: 500;
}

.cert-content-body {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  line-height: 1.8;
  border: 1px solid var(--border-dark);
}

.cert-content-body h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: white;
}

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

.cert-content-body p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.cert-content-body a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.cert-content-body a:hover {
  text-decoration: underline;
}

/* Responsive Design for Certificate Detail */
@media (max-width: 968px) {
  .cert-detail-header {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .cert-detail-image {
    position: static;
    order: -1;
  }

  .cert-badge-image {
    max-height: 250px;
  }

  .cert-badge-placeholder {
    width: 200px;
    height: 200px;
  }
}

@media (max-width: 768px) {
  .cert-detail-header {
    padding: 1.5rem;
  }

  .cert-detail-title {
    justify-content: flex-start;
  }

  .cert-skills-grid {
    grid-template-columns: 1fr;
  }

  .cert-detail-title h1 {
    font-size: 1.5rem;
  }

  .cert-badge-image {
    max-height: 200px;
  }
}

/* Article Detail */
.article-header {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-dark);
}

.article-header-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

@media (min-width: 968px) {
  .article-header-content {
    grid-template-columns: 1fr 350px;
    gap: 3rem;
  }
}

.article-header-text {
  flex: 1;
}

.article-header-image {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.article-featured-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  object-fit: cover;
}

@media (min-width: 968px) {
  .article-featured-image {
    max-width: 350px;
    max-height: 250px;
  }
}

.article-meta {
  display: flex;
  gap: 2rem;
  color: var(--text-muted);
  margin-top: 1rem;
  flex-wrap: wrap;
}

.article-content {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
  line-height: 1.8;
  border: 1px solid var(--border-dark);
}

.article-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: white;
}

.article-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: white;
}

.article-content ul,
.article-content ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

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

.article-content pre {
  background: #0b1424;
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid #1f2937;
}

.article-content code {
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: #fbbf24;
}

.article-content p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

.back-btn {
  margin-bottom: 2rem;
}

.related-posts {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border-dark);
}

.related-posts h3 {
  margin-bottom: 1.5rem;
  color: white;
}

/* Footer */
footer {
  background: var(--darker);
  color: white;
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--darker);
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 4px 10px var(--shadow);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .blog-grid,
  .cert-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 2rem;
  }
}

/* Project Detail Page */
.back-link-project {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #6366f1;
  text-decoration: none;
  margin-bottom: 2rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s;
  background: rgba(99, 102, 241, 0.1);
}

.back-link-project:hover {
  background: rgba(99, 102, 241, 0.2);
  transform: translateX(-3px);
}

.project-detail-header {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
  background: #1e293b;
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.project-detail-image-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-detail-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  object-fit: cover;
}

.project-detail-info-wrapper {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.project-detail-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  margin: 0;
  line-height: 1.2;
}

.project-detail-description {
  font-size: 1.125rem;
  color: #94a3b8;
  line-height: 1.8;
  margin: 0;
}

.project-detail-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-project {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  font-size: 0.95rem;
}

.btn-github {
  background: #0f172a;
  color: white;
  border: 1px solid #334155;
}

.btn-github:hover {
  background: #1e293b;
  border-color: #475569;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-demo {
  background: linear-gradient(to right, #6366f1, #ec4899);
  color: white;
  border: none;
}

.btn-demo:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* Tech Stack Section */
.tech-stack-section {
  margin-bottom: 4rem;
}

.section-title-project {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #334155;
}

.tech-category {
  margin-bottom: 3rem;
  background: #1e293b;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.tech-category-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: white;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tech-category-title i {
  color: #6366f1;
  font-size: 1.25rem;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1.25rem;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1rem;
  background: #0f172a;
  border-radius: 12px;
  border: 1px solid #334155;
  transition: all 0.3s;
}

.tech-item:hover {
  transform: translateY(-4px);
  border-color: #475569;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.tech-item i {
  font-size: 2.5rem;
  margin-bottom: 0.25rem;
}

.tech-name {
  color: #cbd5e1;
  font-size: 0.875rem;
  font-weight: 500;
  text-align: center;
}

/* Project Content */
.project-content-wrapper {
  background: #1e293b;
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.project-content-body {
  color: #cbd5e1;
  line-height: 1.8;
}

.project-content-body h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid #334155;
}

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

.project-content-body h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: white;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.project-content-body h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #e2e8f0;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.project-content-body p {
  margin-bottom: 1rem;
  color: #cbd5e1;
}

.project-content-body ul,
.project-content-body ol {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: #cbd5e1;
}

.project-content-body li {
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.project-content-body li::marker {
  color: #6366f1;
}

.project-content-body strong {
  color: white;
  font-weight: 600;
}

.project-content-body code {
  background: #0f172a;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: #fbbf24;
  font-size: 0.9em;
  font-family: "Courier New", monospace;
}

.project-content-body pre {
  background: #0f172a;
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid #334155;
}

.project-content-body pre code {
  background: transparent;
  padding: 0;
  color: #cbd5e1;
}

/* Responsive Design for Project Detail */
@media (max-width: 968px) {
  .project-detail-header {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .project-detail-image-wrapper {
    order: -1;
  }

  .project-detail-title {
    font-size: 2rem;
  }

  .tech-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
}

@media (max-width: 768px) {
  .project-detail-header {
    padding: 1.5rem;
  }

  .project-detail-title {
    font-size: 1.75rem;
  }

  .section-title-project {
    font-size: 1.5rem;
  }

  .tech-category {
    padding: 1.5rem;
  }

  .tech-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
  }

  .tech-item {
    padding: 1rem 0.75rem;
  }

  .tech-item i {
    font-size: 2rem;
  }

  .project-content-wrapper {
    padding: 1.5rem;
  }

  .project-detail-actions {
    flex-direction: column;
  }

  .btn-project {
    width: 100%;
    justify-content: center;
  }
}

/* New Contact Section Styles */
.contact-column {
  display: flex;
  flex-direction: column;
}

.contact-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.contact-header-icon {
  font-size: 1.5rem;
  color: #22d3ee;
}

.contact-section-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: #22d3ee;
  margin: 0;
}

.contact-divider {
  height: 2px;
  background: linear-gradient(to right, #22d3ee, #4ade80);
  margin-bottom: 2rem;
  border-radius: 1px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-detail-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.email-icon {
  color: #ef4444;
}

.zalo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.zalo-icon svg {
  width: 40px;
  height: 40px;
}

.facebook-icon {
  color: #3b82f6;
}

.contact-detail-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.contact-label {
  color: #cbd5e1;
  font-size: 0.875rem;
}

.contact-value {
  color: inherit;
  text-decoration: none;
  font-size: 1rem;
  transition: opacity 0.3s;
}

.contact-value:hover {
  opacity: 0.8;
}

.email-value {
  color: #ef4444;
}

.zalo-value {
  color: #3b82f6;
}

.facebook-value {
  color: #3b82f6;
}

.connect-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.connect-button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  border: 2px solid #14b8a6;
  border-radius: 12px;
  background: transparent;
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s;
  cursor: pointer;
}

.connect-button:hover {
  background: rgba(20, 184, 166, 0.1);
  border-color: #2dd4bf;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
}

.connect-button-icon {
  font-size: 1.25rem;
  color: white;
}

@media (max-width: 768px) {
  .contact-section-title {
    font-size: 1.5rem;
  }

  .contact-header-icon {
    font-size: 1.25rem;
  }

  .contact-details {
    gap: 1rem;
  }

  .contact-detail-item {
    gap: 0.75rem;
  }

  .contact-detail-icon {
    width: 36px;
    height: 36px;
    font-size: 1.125rem;
  }

  .zalo-icon {
    width: 36px;
    height: 36px;
  }

  .zalo-icon svg {
    width: 20px;
    height: 20px;
  }
}

/* Roadmap Section Styles */
.roadmap-dark {
  background: var(--body-bg);
  min-height: 100vh;
  padding-top: 80px;
}

.roadmap-container {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  gap: 2rem;
  padding: 2rem;
}

/* Sidebar */
.roadmap-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 1.5rem;
  height: fit-content;
  border: 1px solid var(--border-dark);
}

.sidebar-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border-dark);
}

.sidebar-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #22d3ee;
  margin: 0;
}

.sidebar-nav {
  margin-top: 1rem;
}

.sidebar-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-item {
  margin: 0;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-light);
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s;
  border-left: 3px solid transparent;
}

.sidebar-link:hover {
  background: rgba(34, 211, 238, 0.1);
  color: #22d3ee;
  border-left-color: #22d3ee;
}

.sidebar-link.active {
  background: rgba(34, 211, 238, 0.15);
  color: #22d3ee;
  border-left-color: #22d3ee;
  font-weight: 600;
}

.sidebar-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(34, 211, 238, 0.2);
  color: #22d3ee;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  flex-shrink: 0;
}

.sidebar-link.active .sidebar-number {
  background: #22d3ee;
  color: var(--body-bg);
}

.sidebar-text {
  font-size: 0.9rem;
  line-height: 1.4;
}

/* Main Content */
.roadmap-content {
  flex: 1;
  min-width: 0;
}

.roadmap-article {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 2.5rem;
  border: 1px solid var(--border-dark);
}

.article-body {
  color: var(--text-light);
  line-height: 1.8;
  font-size: 1.0625rem;
}

.article-body h2 {
  color: #22d3ee;
  font-size: 1.75rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.article-body h3 {
  color: var(--text-light);
  font-size: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.article-body h4 {
  color: var(--text-light);
  font-size: 1.25rem;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

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

.article-body ul,
.article-body ol {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body code {
  background: rgba(34, 211, 238, 0.1);
  color: #22d3ee;
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

.article-body pre {
  background: var(--darker);
  border: 1px solid var(--border-dark);
  border-radius: 8px;
  padding: 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.article-body pre code {
  background: transparent;
  color: var(--text-light);
  padding: 0;
}

.article-body a {
  color: #22d3ee;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

.article-body a:hover {
  border-bottom-color: #22d3ee;
}

.article-body blockquote {
  border-left: 4px solid #22d3ee;
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-style: italic;
}

/* Video and Image Placeholders */
.video-placeholder,
.image-placeholder {
  background: var(--darker);
  border: 2px dashed var(--border-dark);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  margin: 2rem 0;
}

.video-placeholder h3,
.image-placeholder h3 {
  color: #22d3ee;
  margin-bottom: 0.5rem;
}

.video-placeholder p,
.image-placeholder p {
  color: var(--text-muted);
  margin: 0;
}

/* YouTube Video Embed */
.video-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 2rem auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-dark);
  background: var(--darker);
}

.video-container iframe {
  width: 100%;
  height: 450px;
  display: block;
}

.article-body iframe {
  width: 100%;
  max-width: 800px;
  height: 450px;
  border-radius: 12px;
  margin: 2rem 0;
  border: 1px solid var(--border-dark);
}

/* Images */
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 2rem 0;
  border: 1px solid var(--border-dark);
}

/* Article Navigation */
.article-navigation {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border-dark);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--darker);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-light);
  transition: all 0.3s;
  flex: 1;
  max-width: 48%;
}

.nav-link:hover {
  background: rgba(34, 211, 238, 0.1);
  border-color: #22d3ee;
  color: #22d3ee;
}

.nav-prev {
  justify-content: flex-start;
}

.nav-next {
  justify-content: flex-end;
  flex-direction: row-reverse;
}

.nav-arrow {
  font-size: 1.5rem;
  color: #22d3ee;
}

.nav-content {
  display: flex;
  flex-direction: column;
}

.nav-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.nav-title {
  font-size: 1rem;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 1024px) {
  .roadmap-container {
    flex-direction: column;
  }

  .roadmap-sidebar {
    width: 100%;
    position: static;
    max-height: 400px;
    overflow-y: auto;
  }

  .sidebar-menu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
  }
}

@media (max-width: 768px) {
  .roadmap-container {
    padding: 1rem;
  }

  .roadmap-article {
    padding: 1.5rem;
  }

  .sidebar-menu {
    grid-template-columns: 1fr;
  }

  .article-navigation {
    flex-direction: column;
  }

  .nav-link {
    max-width: 100%;
  }

  .article-body iframe {
    height: 250px;
  }
}