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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
header {
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

header nav {
  padding: 1rem 0;
}

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

header .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #2563eb;
  text-decoration: none;
}

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

header .nav-links a {
  text-decoration: none;
  color: #4b5563;
  transition: color 0.3s;
}

header .nav-links a:hover {
  color: #2563eb;
}

header .btn-contact {
  background: #2563eb;
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 0.5rem;
  transition: background 0.3s;
}

header .btn-contact:hover {
  background: #1e40af;
}

/* Hero Section */
.hero {
  background: linear-gradient(to right, #2563eb, #1e40af);
  color: white;
  padding: 5rem 0;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero h1 span {
  color: #93c5fd;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 700px;
  color: #bfdbfe;
}

.hero .buttons {
  display: flex;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary {
  background: white;
  color: #2563eb;
}

.btn-primary:hover {
  background: #f3f4f6;
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: #2563eb;
}

/* Sections */
section {
  padding: 5rem 0;
}

.section-gray {
  background: #f9fafb;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
}

/* Services Grid */
.services-grid, .blog-grid, .portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card, .blog-card, .portfolio-card {
  background: white;
  padding: 2rem;
  border-radius: 0.5rem;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.3s;
}

.service-card:hover, .blog-card:hover, .portfolio-card:hover {
  box-shadow: 0 10px 15px rgba(0,0,0,0.15);
  transform: translateY(-5px);
}

.service-card .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.service-card h3, .blog-card h3, .portfolio-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-card p, .blog-card p {
  color: #6b7280;
  margin-bottom: 1rem;
}

.service-card a, .blog-card a, .portfolio-card a {
  color: #2563eb;
  font-weight: bold;
  text-decoration: none;
}

.service-card a:hover, .blog-card a:hover, .portfolio-card a:hover {
  text-decoration: underline;
}

/* Why Choose Section */
.why-choose {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 3rem;
  align-items: center;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: start;
}

.feature-icon {
  background: #dbeafe;
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.feature-item h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.feature-item p {
  color: #6b7280;
}

.tech-box {
  background: #eff6ff;
  padding: 2rem;
  border-radius: 0.5rem;
}

.tech-box h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.tech-item {
  background: white;
  padding: 1rem;
  border-radius: 0.5rem;
  text-align: center;
  font-weight: 600;
}

/* Blog */
.blog-card .date {
  color: #6b7280;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

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

.tag {
  background: #dbeafe;
  color: #1e40af;
  padding: 0.25rem 0.75rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
}

/* CTA Section */
.cta {
  background: #2563eb;
  color: white;
  text-align: center;
}

.cta h2 {
  color: white;
}

.cta p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.btn-white {
  background: white;
  color: #2563eb;
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-white:hover {
  background: #f3f4f6;
}

/* Footer */
footer {
  background: #111827;
  color: white;
  padding: 3rem 0 2rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

footer h3, footer h4 {
  margin-bottom: 1rem;
}

footer p, footer a {
  color: #9ca3af;
}

footer a {
  text-decoration: none;
  transition: color 0.3s;
}

footer a:hover {
  color: white;
}

footer ul {
  list-style: none;
}

footer ul li {
  margin-bottom: 0.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 2rem;
  text-align: center;
  color: #9ca3af;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.contact-icon {
  background: #dbeafe;
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-size: 1.5rem;
}

.contact-item h3 {
  margin-bottom: 0.5rem;
}

.contact-item a {
  color: #2563eb;
  text-decoration: none;
}

.contact-item a:hover {
  text-decoration: underline;
}

/* Form */
form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

form label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}

form input, form select, form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
}

form input:focus, form select:focus, form textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

form button {
  background: #2563eb;
  color: white;
  padding: 1rem;
  border: none;
  border-radius: 0.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
}

form button:hover {
  background: #1e40af;
}

/* Article Page */
article.blog-post {
  max-width: 800px;
  margin: 0 auto;
}

article.blog-post header {
  position: static;
  box-shadow: none;
  margin-bottom: 3rem;
}

article.blog-post .date {
  color: #6b7280;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

article.blog-post h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

article.blog-post .excerpt {
  font-size: 1.25rem;
  color: #6b7280;
  margin-bottom: 1.5rem;
}

.article-content {
  line-height: 1.8;
}

.article-content h2 {
  font-size: 2rem;
  margin: 3rem 0 1.5rem;
  text-align: left;
}

.article-content h3 {
  font-size: 1.5rem;
  margin: 2rem 0 1rem;
}

.article-content h4 {
  font-size: 1.25rem;
  margin: 1.5rem 0 0.75rem;
}

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

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

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

.article-content strong {
  font-weight: 700;
  color: #111827;
}

.author-box {
  background: #eff6ff;
  padding: 2rem;
  border-radius: 0.5rem;
  margin: 3rem 0;
}

.author-box h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.related-posts {
  background: #f9fafb;
  padding: 5rem 0;
}

/* Portfolio */
.portfolio-card .portfolio-image {
  background: linear-gradient(to bottom right, #3b82f6, #1e40af);
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  border-radius: 0.5rem 0.5rem 0 0;
  margin: -2rem -2rem 1rem -2rem;
}

.portfolio-card .category {
  color: #2563eb;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.portfolio-card .tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.portfolio-card .tech-tag {
  background: #dbeafe;
  color: #1e40af;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
}

/* Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

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

.process-number {
  background: #2563eb;
  color: white;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0 auto 1rem;
}

.process-step h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.process-step p {
  color: #6b7280;
}

/* Tech Grid */
.technologies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.tech-card {
  background: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  text-align: center;
  font-weight: 600;
  transition: all 0.3s;
}

.tech-card:hover {
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* FAQ */
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.faq-item {
  background: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.faq-item h3 {
  margin-bottom: 0.5rem;
}

.faq-item p {
  color: #6b7280;
}

/* Services Page */
.service-detail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 3rem;
  align-items: center;
  margin-bottom: 5rem;
}

.service-detail:last-child {
  margin-bottom: 0;
}

.service-detail .icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.service-detail h2 {
  text-align: left;
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.service-detail p {
  color: #6b7280;
  margin-bottom: 1.5rem;
}

.service-detail ul {
  list-style: none;
  margin-bottom: 2rem;
}

.service-detail ul li {
  display: flex;
  align-items: start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.service-detail ul li .check {
  color: #10b981;
  font-weight: bold;
  font-size: 1.25rem;
}

.service-box {
  background: #f9fafb;
  padding: 2rem;
  border-radius: 0.5rem;
}

.service-box h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.pricing-box {
  background: #eff6ff;
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 1.5rem;
}

.pricing-box p {
  margin: 0;
}

.pricing-box .price {
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.pricing-box .note {
  font-size: 0.875rem;
  color: #6b7280;
}

/* Responsive */
@media (max-width: 768px) {
  header .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .services-grid, .blog-grid, .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .why-choose {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .service-detail {
    grid-template-columns: 1fr;
  }
  
  article.blog-post h1 {
    font-size: 2rem;
  }
}