:root {
  /* Modern Color Palette */
  --primary-bg: #0f0f0f;
  --secondary-bg: #1a1a1a;
  --card-bg: #242424;
  --accent-color: #3b82f6;
  --accent-hover: #2563eb;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border-color: #374151;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --info-color: #06b6d4;
  --danger-color: #ef4444;
  
  /* Spacing & Layout */
  --max-width: 1200px;
  --content-width: 800px;
  --sidebar-width: 300px;
  --card-radius: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Project Header */
.project-header {
  padding: 6rem 0 3rem;
  background: linear-gradient(135deg, rgba(15, 15, 15, 0.9) 0%, rgba(26, 26, 26, 0.9) 100%);
  position: relative;
}

.project-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  z-index: -1;
}

.project-header-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.project-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.project-subtitle {
  color: var(--text-secondary);
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

.project-meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.meta-item i {
  color: var(--accent-color);
}

.project-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

.project-status.complete {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
}

.project-status.progress {
  background: rgba(185, 154, 16, 0.1);
  color: var(--warning-color);
}

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

.btn {
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

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

/* Main Layout */
.main-layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
  margin-top: 3rem;
  margin-bottom: 4rem;
}

/* Project Navigation */
.project-nav {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  /* position: sticky; */
  top: 100px;
}

.project-nav h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.nav-tabs {
  list-style: none;
}

.nav-tab {
  margin-bottom: 0.5rem;
}

.nav-tab a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition);
  font-weight: 500;
}

.nav-tab a:hover,
.nav-tab a.active {
  background: var(--accent-color);
  color: white;
}

.nav-tab a i {
  width: 16px;
  text-align: center;
}

/* Project Stats */
.project-stats {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  margin-top: 1.5rem;
}

.project-stats h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.stats-grid {
  display: grid;
  gap: 1rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
  border-bottom: none;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.stat-value {
  font-weight: 600;
  color: var(--accent-color);
}

/* Content Area */
.content-area {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.content-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.content-title {
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.content-title i {
  color: var(--accent-color);
}

.content-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.content-body {
  padding: 1.5rem;
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Typography for content */
.content-body h1,
.content-body h2,
.content-body h3,
.content-body h4 {
  margin-bottom: 1rem;
  margin-top: 2rem;
}

.content-body h1:first-child,
.content-body h2:first-child,
.content-body h3:first-child {
  margin-top: 0;
}

.content-body h2 {
  font-size: 1.5rem;
  color: var(--text-primary);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.content-body h3 {
  font-size: 1.25rem;
  color: var(--accent-color);
}

.content-body p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.content-body ul,
.content-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

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

.content-body blockquote {
  background: var(--secondary-bg);
  border-left: 4px solid var(--accent-color);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.content-body code {
  background: var(--secondary-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.9rem;
  color: var(--accent-color);
}

.content-body pre {
  background: var(--secondary-bg);
  padding: 1.5rem;
  border-radius: 8px;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

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

/* Image Gallery */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.gallery-item {
  background: var(--secondary-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
}

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

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

.gallery-caption {
  padding: 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Progress Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  background: var(--secondary-bg);
  border-radius: 8px;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  background: var(--accent-color);
  border-radius: 50%;
  border: 3px solid var(--primary-bg);
}

.timeline-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.timeline-content {
  color: var(--text-secondary);
}

/* Version Control */
.version-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.version-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--secondary-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.version-item:hover {
  border-color: var(--accent-color);
  transform: translateY(-2px);
  cursor: pointer;
}

.version-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.version-number {
  background: var(--accent-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.875rem;
  font-weight: 600;
}

.version-details h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--text-primary);
}

.version-details p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.version-date {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .project-nav {
    position: static;
  }
  
  .nav-tabs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
  }
  
  .nav-tab a {
    text-align: center;
    justify-content: center;
  }
  
  .project-title {
    font-size: 2rem;
  }
  
  .project-meta {
    flex-direction: column;
    gap: 1rem;
  }
  
  .content-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .nav-links {
    display: none;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Code Highlighting */
.language-javascript,
.language-python,
.language-cpp {
  background: var(--secondary-bg) !important;
}

/* Source Code Dropdown */
.source-code-dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-trigger {
  display: flex !important;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.dropdown-arrow {
  transition: transform 0.3s ease;
  font-size: 0.8rem;
}

.dropdown-trigger.active .dropdown-arrow {
  transform: rotate(180deg);
}

.source-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 350px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  margin-top: 0.5rem;
  padding: 0;
  display: none;
  z-index: 1000;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(20px);
  max-height: 400px;
  overflow-y: auto;
}

.source-dropdown-menu.show {
  display: block;
  animation: dropdownFadeIn 0.2s ease-out;
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dropdown-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.dropdown-header i {
  color: var(--accent-color);
  font-size: 1.1rem;
}

.source-dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  border-bottom: 1px solid rgba(55, 65, 81, 0.3);
}

.source-dropdown-item:last-child {
  border-bottom: none;
}

.source-dropdown-item:hover {
  background: var(--secondary-bg);
  color: var(--text-primary);
}

.source-dropdown-item:hover .fas.fa-external-link-alt {
  color: var(--accent-color);
  transform: translateX(2px);
}

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

.item-info > i {
  width: 20px;
  text-align: center;
  color: var(--accent-color);
  font-size: 1.1rem;
}

.item-details {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.item-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.item-description {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.source-dropdown-item .fas.fa-external-link-alt {
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: var(--transition);
}




/* Table Styles */
.tab-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--secondary-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.tab-content thead {
  background: var(--card-bg);
  border-bottom: 2px solid var(--border-color);
}

.tab-content th {
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.tab-content td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.tab-content tr:last-child td {
  border-bottom: none;
}

.tab-content tbody tr {
  transition: var(--transition);
}

.tab-content tbody tr:hover {
  background: rgba(59, 130, 246, 0.1);
}

.tab-content td[style*="text-align: center"],
.tab-content th[style*="text-align: center"] {
  text-align: center;
}

.tab-content td[style*="text-align: right"],
.tab-content th[style*="text-align: right"] {
  text-align: right;
}


/* Link Styles */

.tab-content a {
  color: var(--accent-color);
  text-decoration: none;
  position: relative;
  font-weight: 500;
  transition: var(--transition);
}

.tab-content a:hover {
  color: var(--accent-hover);
}

.tab-content a:after {
  content: '';
  position: absolute;
  width: 100%;
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform 0.3s ease-out;
}

.tab-content a:hover:after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

/* External Links */
.tab-content a[href^="http"]:after {
  display: none;
}

.tab-content a[href^="http"] {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.tab-content a[href^="http"]:after {
  font-family: 'Font Awesome 6 Free';
  content: '\f08e';
  font-size: 0.75em;
  font-weight: 900;
  position: static;
  background: none;
  transform: none;
  height: auto;
  width: auto;
}



/* Image Modal */
.image-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1100;
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.image-modal.show {
  display: flex;
  opacity: 1;
}

.modal-content {
  position: relative;
  margin: auto;
  max-width: 90%;
  max-height: 90vh;
  animation: modalZoomIn 0.3s ease;
}

.modal-image {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.modal-caption {
  color: var(--text-primary);
  text-align: center;
  padding: 1rem;
  font-size: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.modal-close {
  position: absolute;
  top: -2rem;
  right: -2rem;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--accent-color);
  transform: rotate(90deg);
}

@keyframes modalZoomIn {
  from {
    transform: scale(0.95);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Modal Navigation Buttons */
.modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-primary);
  font-size: 2rem;
  cursor: pointer;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  opacity: 0.7;
}

.modal-nav:hover {
  opacity: 1;
  background: var(--accent-color);
}

.modal-prev {
  left: 1rem;
}

.modal-next {
  right: 1rem;
}





/* Blog Post Styles */
#blog article {
  margin-bottom: 3rem; 
  padding-bottom: 2rem; 
  border-bottom: 1px solid var(--border-color);
}

article .article-title {
  color: var(--accent-color); 
  margin-bottom: 0.5rem;
}

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

article .article-link {
  color: var(--accent-color); 
  text-decoration: none; 
  font-weight: 600;
}