:root {
  --bg-color: #000000;
  --text-color: #ffffff;
  --text-muted: #888888;
  --border-color: #333333;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: 'Space Mono', "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html, body {
  overflow-x: hidden;
  background-color: var(--bg-color);
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Page Transition Overlay */
#page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--text-color);
  z-index: 9999;
  pointer-events: none;
  transform: translateY(-100%);
  display: none;
}

/* Header & Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 2rem 0;
  z-index: 1000;
  mix-blend-mode: difference;
  -webkit-transform: translateZ(0);
}

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

.logo a {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.05em;
  text-transform: lowercase;
}

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

.site-nav .nav-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
}

.site-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 1px;
  background-color: var(--text-color);
  transition: width 0.3s ease;
}

.site-nav .nav-link:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  width: 30px;
  height: 2px;
  background-color: var(--text-color);
  transition: transform 0.3s ease;
}

.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100dvh; /* better for mobile */
  background-color: var(--bg-color);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.overlay-nav-list {
  list-style: none;
  text-align: center;
}

.overlay-nav-list li {
  margin-bottom: 2rem;
  overflow: hidden;
}

.overlay-nav-list .nav-link {
  font-size: 3rem;
  font-weight: 300;
  display: inline-block;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-overlay.active .nav-link {
  transform: translateY(0);
}

/* Main Content Spacing */
#main-content {
  min-height: 100vh;
  padding-top: 150px;
  padding-bottom: 100px;
}

/* Typography & Utilities */
h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.page-title {
  font-size: 4rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.page-description {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
}

.section-heading {
  font-size: 2rem;
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

/* Animation Utilities */
.reveal-text {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}

.reveal-text span {
  display: inline-block;
  transform: translateY(100%);
}

.fade-in-text {
  opacity: 0;
  transform: translateY(20px);
}

.fade-up {
  opacity: 0;
  transform: translateY(40px);
}

/* Home Page */
.hero-section {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.hero-title {
  font-size: 6vw;
  font-weight: 300;
  letter-spacing: -0.03em;
  margin-bottom: 2rem;
}

.hero-line {
  display: block;
  overflow: hidden;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 600px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 1rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--text-color);
  background: transparent;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn .arrow {
  margin-left: 10px;
  transition: transform 0.3s ease;
}

.btn:hover {
  background: var(--text-color);
  color: var(--bg-color);
}

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

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 5%;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.scroll-indicator .line {
  width: 50px;
  height: 1px;
  background-color: var(--text-muted);
  position: relative;
  overflow: hidden;
}

.scroll-indicator .line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background-color: var(--text-color);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: 100%; }
}

.home-featured {
  padding: 5rem 0;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
}

.project-card {
  border: 1px solid var(--border-color);
  padding: 2rem;
  position: relative;
  transition: border-color 0.3s ease;
  overflow: hidden;
}

.project-card a {
  display: block;
  height: 100%;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255,255,255,0.03);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: -1;
}

.project-card:hover {
  border-color: var(--text-color);
}

.project-card:hover::before {
  transform: scaleY(1);
  transform-origin: top;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.card-arrow {
  position: absolute;
  top: 2rem;
  right: 2rem;
  font-size: 1.5rem;
  opacity: 0;
  transform: translate(-10px, 10px);
  transition: all 0.3s ease;
}

.project-card:hover .card-arrow {
  opacity: 1;
  transform: translate(0, 0);
}

/* Projects List */
.project-block {
  border-bottom: 1px solid var(--border-color);
}

.project-link {
  display: block;
  padding: 3rem 0;
}

.project-link:hover .project-name {
  transform: translateX(10px);
}

.project-link:hover .view-link {
  color: var(--text-color);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
}

.project-name {
  font-size: 2.5rem;
  font-weight: 300;
  margin: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-category {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.project-summary {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin-bottom: 2rem;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.view-link {
  color: var(--text-muted);
  transition: color 0.3s ease;
}

/* Project Detail */
.project-hero {
  margin-bottom: 5rem;
}

.back-link-wrapper {
  margin-bottom: 2rem;
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.project-title {
  font-size: 5rem;
  font-weight: 300;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.project-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  border-top: 1px solid var(--border-color);
  padding-top: 3rem;
}

.project-description-large {
  font-size: 1.5rem;
  font-weight: 300;
  max-width: 800px;
  line-height: 1.5;
}

.external-link {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-color);
  border-bottom: 1px solid var(--text-color);
  padding-bottom: 0.2rem;
  align-self: flex-start;
}

.external-link:hover {
  color: var(--text-muted);
  border-color: var(--text-muted);
}

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

/* Blog & Post Cards */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.blog-item {
  border: 1px solid var(--border-color);
  transition: border-color 0.3s ease;
}

.blog-item:hover {
  border-color: var(--text-color);
}

.blog-link {
  display: block;
  padding: 2.5rem;
}

.blog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.blog-heading {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.blog-excerpt {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.read-more {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-color);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.3s ease;
}

.blog-item:hover .read-more {
  border-color: var(--text-color);
}

.post-card {
  border: 1px solid var(--border-color);
  padding: 2rem;
}

.post-card:hover {
  border-color: var(--text-color);
}

.post-card-link {
  display: block;
}

.post-card-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.post-card-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.post-card-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* Single Post */
.post-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 4rem;
  margin-bottom: 4rem;
}

.post-container {
  max-width: 800px;
  margin: 0 auto;
}

.post-meta {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.post-title {
  font-size: 3.5rem;
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* Markdown Styling */
.markdown-content {
  font-size: 1.1rem;
  color: #ddd;
}

.markdown-content h1, 
.markdown-content h2, 
.markdown-content h3 {
  color: var(--text-color);
  margin-top: 3rem;
  margin-bottom: 1.5rem;
}

.markdown-content h2 { font-size: 2rem; }
.markdown-content h3 { font-size: 1.5rem; }

.markdown-content p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

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

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

.markdown-content strong {
  color: var(--text-color);
  font-weight: 600;
}

.markdown-content blockquote {
  border-left: 2px solid var(--text-color);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-muted);
}

.markdown-content a {
  color: var(--text-color);
  border-bottom: 1px solid var(--text-muted);
}

.markdown-content a:hover {
  border-color: var(--text-color);
}

.markdown-content code {
  font-family: var(--font-mono);
  background-color: #111;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.markdown-content pre {
  background-color: #111;
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 2rem;
}

.markdown-content pre code {
  background-color: transparent;
  padding: 0;
  font-size: 0.9em;
}

/* About Page */
.about-container {
  max-width: 900px;
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
}

.lead-text {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text-color);
  margin-bottom: 2rem;
}

.about-bio p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.about-bio a {
  color: var(--text-color);
  border-bottom: 1px solid var(--text-muted);
}

.about-bio a:hover {
  border-color: var(--text-color);
}

.links-title {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.social-list {
  list-style: none;
}

.social-item {
  display: flex;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.social-label {
  width: 80px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.social-value {
  color: var(--text-muted);
  transition: color 0.3s ease;
}

.social-arrow {
  margin-left: auto;
  opacity: 0;
  transform: translate(-10px, 10px);
  transition: all 0.3s ease;
}

.social-item:hover .social-value {
  color: var(--text-color);
}

.social-item:hover .social-arrow {
  opacity: 1;
  transform: translate(0, 0);
}

/* Footer */
.site-footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

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

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }

/* Responsive */
@media (max-width: 768px) {
  .site-nav .nav-list { display: none; }
  .menu-toggle { display: flex; }
  
  .page-title { font-size: 2.5rem; }
  .hero-title { font-size: 12vw; }
  
  .project-header {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .overlay-nav-list .nav-link { font-size: 2.5rem; }
  
  .project-name { font-size: 1.8rem; }
  .project-title { font-size: 2.5rem; }
  .post-title { font-size: 2.2rem; }
  .blog-heading { font-size: 1.5rem; }
  .section-heading { font-size: 1.5rem; }
  .project-description-large { font-size: 1.2rem; }
  .lead-text { font-size: 1.2rem; }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .featured-grid,
  .updates-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .social-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
}