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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --green: #3fb950;
  --border: #30363d;
  --code-bg: #1a1f26;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Menlo', 'Monaco', 'Consolas', monospace;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo::before {
  content: '> ';
  color: var(--green);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Welcome Section */
.welcome-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 20px;
  background: var(--bg-primary);
  position: relative;
}

.welcome-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at top, rgba(88, 166, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at bottom, rgba(63, 185, 80, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.welcome-section .container,
.welcome-section > article {
  position: relative;
  z-index: 1;
}

.welcome-section h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.welcome-section h1 .highlight {
  color: var(--accent);
}

.welcome-section .lead {
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto 30px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.welcome-section .code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 30px;
  margin: 30px auto;
  max-width: 520px;
  text-align: left;
  font-size: 0.9rem;
  overflow-x: auto;
}

.welcome-section .code-block code {
  font-family: inherit;
}

.welcome-section .code-block .comment {
  color: var(--text-secondary);
}

.welcome-section .code-block .keyword {
  color: #ff7b72;
}

.welcome-section .code-block .string {
  color: #a5d6ff;
}

.welcome-section .code-block .function {
  color: #d2a8ff;
}

/* Contact Section */
.contact-section {
  padding: 100px 20px;
  background: var(--bg-secondary);
}

.contact-section h2,
.section-header h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 50px;
  color: var(--text-primary);
  font-weight: 600;
}

.section-header {
  max-width: 1000px;
  margin: 0 auto;
}

.contact-section h2::before,
.section-header h2::before {
  content: '# ';
  color: var(--text-secondary);
}

.contact-wrapper,
article.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-form,
.contact-details,
.contact-card,
section.contact-form,
section.contact-card,
aside.contact-details {
  background: var(--bg-primary);
  padding: 35px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.contact-form h3,
.contact-details h3,
.contact-card h3 {
  font-size: 1.2rem;
  margin-bottom: 25px;
  color: var(--text-primary);
  font-weight: 600;
}

.contact-form h3::before,
.contact-details h3::before,
.contact-card h3::before {
  content: '$ ';
  color: var(--green);
}

/* Form Styles */
.form-group,
fieldset {
  margin-bottom: 20px;
  border: none;
  padding: 0;
}

.form-group label,
fieldset label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
fieldset input,
fieldset textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
fieldset input:focus,
fieldset textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder,
fieldset input::placeholder,
fieldset textarea::placeholder {
  color: var(--text-secondary);
}

.form-group textarea,
fieldset textarea {
  resize: vertical;
  min-height: 120px;
}

/* Contact Details */
.profile-photo {
  text-align: center;
  margin: 0 0 25px 0;
}

.profile-photo.profile-photo-large {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.profile-photo img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  object-fit: cover;
  background: var(--bg-tertiary);
}

.profile-photo-large img {
  width: 280px;
  height: 280px;
}

.contact-info,
address.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
  font-style: normal;
}

.info-item,
figure.info-item {
  padding: 15px;
  background: var(--bg-tertiary);
  border-radius: 6px;
  border-left: 3px solid var(--accent);
  margin: 0;
}

.info-item strong,
.info-item figcaption {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 5px;
  color: var(--text-secondary);
  font-weight: 500;
}

.info-item p {
  color: var(--text-primary);
  margin: 0;
  font-size: 0.95rem;
}

.info-item a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.info-item a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* Social Links */
.social-links,
nav.social-links {
  display: flex;
  gap: 15px;
  margin-top: 10px;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

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

.social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Achievements Section */
.achievements-section {
  padding: 80px 20px;
  background: var(--bg-primary);
}

.achievements-section .section-header h2::before {
  content: '# ';
  color: var(--text-secondary);
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  max-width: 1000px;
  margin: 0 auto;
}

.achievement-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 8px;
  padding: 25px;
  text-decoration: none;
  transition: all 0.2s ease;
}

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

.achievement-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.achievement-card h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin: 10px 0;
}

.achievement-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

.achievement-tags {
  margin-top: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Blog Section */
.blog-section {
  padding: 100px 20px;
  background: var(--bg-primary);
  min-height: 60vh;
}

.blog-section .section-header {
  text-align: center;
  margin-bottom: 50px;
}

.blog-section .section-header h2::before {
  content: '# ';
  color: var(--text-secondary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 10px;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.blog-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 25px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.blog-card:hover {
  border-color: var(--accent);
}

.blog-card--achievement {
  border-left: 3px solid var(--green);
}

.blog-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.blog-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.blog-badge {
  background: var(--green);
  color: var(--bg-primary);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.blog-card h3 {
  color: var(--text-primary);
  font-size: 1.2rem;
  margin: 0 0 10px 0;
}

.blog-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

.blog-tags {
  margin-top: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
}

/* Blog Post */
.blog-post {
  padding: 100px 20px 60px;
  max-width: 800px;
  margin: 0 auto;
}

.back-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  display: inline-block;
  margin-bottom: 20px;
}

.back-link:hover {
  text-decoration: underline;
}

.blog-post-header h1 {
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.blog-post-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
}

.blog-post-meta time {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.blog-post-content {
  margin-top: 40px;
  line-height: 1.8;
}

.blog-post-content h2 {
  font-size: 1.4rem;
  margin: 40px 0 20px;
  color: var(--text-primary);
}

.blog-post-content h2::before {
  content: '## ';
  color: var(--text-secondary);
}

.blog-post-content p {
  margin: 0 0 20px;
  color: var(--text-secondary);
}

.blog-post-content ul,
.blog-post-content ol {
  margin: 0 0 20px 20px;
  color: var(--text-secondary);
}

.blog-post-content li {
  margin-bottom: 8px;
}

.blog-post-content strong {
  color: var(--text-primary);
}

.blog-post-content a {
  color: var(--accent);
  text-decoration: none;
}

.blog-post-content a:hover {
  text-decoration: underline;
}

.blog-post-content code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.blog-post-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 20px 0;
}

.blog-post-content pre code {
  background: none;
  padding: 0;
}

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  text-align: center;
  padding: 25px 20px;
}

.footer p {
  margin: 0;
  font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    gap: 20px;
  }
  
  .welcome-section h1 {
    font-size: 1.8rem;
  }
  
  .welcome-section .lead {
    font-size: 1rem;
  }
  
  .welcome-section .code-block {
    font-size: 0.8rem;
    padding: 15px 20px;
  }
  
  .contact-wrapper,
  article.contact-wrapper {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .contact-form,
  .contact-details,
  .contact-card {
    padding: 25px;
  }
  
  .profile-photo-large img {
    width: 200px;
    height: 200px;
  }
  
  .social-links {
    flex-direction: column;
  }
  
  .achievements-grid {
    grid-template-columns: 1fr;
  }
  
  .blog-post-header h1 {
    font-size: 1.5rem;
  }
  
  .blog-post {
    padding: 80px 20px 40px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    flex-direction: column;
    height: auto;
    padding: 15px 20px;
    gap: 10px;
  }
  
  .welcome-section {
    padding-top: 120px;
  }
  
  .welcome-section h1 {
    font-size: 1.5rem;
  }
}