:root {
  /* Brand Colors - PCB / Maker / Tech */
  --color-bg-base: #101214;
  --color-bg-surface: #1a1d21;
  --color-bg-surface-glass: rgba(26, 29, 33, 0.9);

  --color-primary: #00ff9d;
  /* PCB Trace Green/Cyan */
  --color-primary-dim: rgba(0, 255, 157, 0.1);
  --color-accent: #ff3366;
  /* LED Red */
  --color-warning: #ffcc00;
  /* Caution Tape Yellow */
  --color-border: #2d333b;
  --color-border-active: #00ff9d;

  --color-text-main: #e6edf3;
  --color-text-muted: #8b949e;

  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  /* Datasheet font */

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
  --space-xl: 64px;

  /* Layout */
  --sidebar-width: 300px;
  --max-content-width: 800px;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;

  /* Technical Grid Background */
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: -1px -1px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  position: relative;
}

a:hover {
  color: #fff;
  text-shadow: 0 0 5px var(--color-primary);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scanline {
  0% {
    transform: translateY(-100%);
  }

  100% {
    transform: translateY(100%);
  }
}

/* App Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar - "Instrument Panel" Look */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-surface);
  border-right: 1px solid var(--color-border);
  padding: 0;
  /* Removing padding to allow full-width items */
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}

.brand {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: repeating-linear-gradient(45deg,
      var(--color-bg-surface),
      var(--color-bg-surface) 10px,
      #1f2428 10px,
      #1f2428 20px);
}

.brand span {
  color: var(--color-primary);
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  padding: var(--space-md);
  gap: 2px;
}

.nav-item a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  border-radius: 2px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  /* Technical font for list */
  font-size: 0.9rem;
  border-left: 2px solid transparent;
}

.nav-item a:hover {
  background: rgba(255, 255, 255, 0.03);
  color: #fff;
}

.nav-item a.active {
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border-left: 2px solid var(--color-primary);
  box-shadow: inset 0 0 10px var(--color-primary-dim);
}

/* Main Content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: var(--space-xl);
  max-width: 100%;
}

.content-wrapper {
  max-width: var(--max-content-width);
  margin: 0 auto;
  animation: fadeIn 0.4s ease-out;
}

/* Typography - Technical Headers */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: #fff;
  font-family: var(--font-mono);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
  text-wrap: balance;
  line-height: 1.3;
}

h1 {
  font-size: 2rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* Space for sharing action */
  flex-wrap: wrap;
  /* Prevent overlap on narrow screens */
  gap: var(--space-md);
}

.share-actions {
  display: flex;
  gap: var(--space-sm);
}

h1::before {
  content: '#';
  margin-right: var(--space-sm);
  color: var(--color-primary);
  opacity: 0.5;
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--space-xl);
  color: var(--color-primary);
  border-bottom: 1px solid rgba(0, 255, 157, 0.1);
  padding-bottom: var(--space-xs);
}

h3 {
  font-size: 1.25rem;
  margin-top: var(--space-lg);
  color: #fff;
  font-weight: 600;
}

h4 {
  font-size: 1.1rem;
  margin-top: var(--space-md);
  color: var(--color-text-main);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

h5 {
  font-size: 1rem;
  margin-top: var(--space-md);
  color: var(--color-primary);
  font-weight: normal;
}

h6 {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* Component Styles - "Lab Equipment" Feel */
.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  /* Sharper corners */
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

/* Technical Corner Markers on Cards */
.card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 20px;
  height: 20px;
  border-top: 2px solid var(--color-border);
  border-right: 2px solid var(--color-border);
  opacity: 0.5;
}

/* Horizontal Gallery Strip */
.gallery-container {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  white-space: nowrap;
  padding: var(--space-md) 0;
  display: flex;
  gap: var(--space-md);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  /* Customize scrollbar for gallery */
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-bg-base);
}

.gallery-container::-webkit-scrollbar {
  height: 8px;
}

.gallery-container::-webkit-scrollbar-track {
  background: var(--color-bg-base);
  border-radius: 4px;
}

.gallery-container::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
}

.gallery-item {
  display: inline-block;
  height: 300px;
  /* Fixed height for uniformity */
  flex: 0 0 auto;
  scroll-snap-align: center;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease;
  background: var(--color-bg-surface);
}

@media (max-width: 768px) {
  .gallery-item {
    height: 200px;
  }
}

.gallery-item:hover {
  border-color: var(--color-primary);
  transform: scale(1.02);
  z-index: 10;
}

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

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
}

/* Interactive Master-Detail Gallery */
.interactive-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  background: rgba(0, 0, 0, 0.2);
}

.gallery-main-stage {
  width: 100%;
  height: 450px;
  background: #000;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.gallery-main-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  opacity: 1;
  transition: opacity 0.3s ease-in-out;
}

.gallery-main-image.fade-out {
  opacity: 0;
}

.gallery-thumbnails-track {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding: var(--space-xs) 0;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-bg-base);
}

.gallery-thumbnails-track::-webkit-scrollbar {
  height: 6px;
}

.gallery-thumbnails-track::-webkit-scrollbar-thumb {
  background: var(--color-primary);
}

.gallery-thumbnail-item {
  height: 80px;
  flex: 0 0 auto;
  border: 2px solid transparent;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.2s ease;
}

.gallery-thumbnail-item:hover {
  opacity: 1;
  border-color: var(--color-text-muted);
}

.gallery-thumbnail-item.active {
  opacity: 1;
  border-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(0, 255, 157, 0.3);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

/* Instructional / Manual Styles */
.instruction-step {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid var(--color-border);
  transition: all 0.2s ease;
}

.instruction-step:hover {
  border-left-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.04);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  opacity: 0.8;
  line-height: 1;
}

.technical-list {
  list-style: none;
  counter-reset: tech-counter;
  margin-top: var(--space-md);
}

.technical-list li {
  position: relative;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.technical-list li:last-child {
  border-bottom: none;
}

.technical-list li::before {
  counter-increment: tech-counter;
  content: counter(tech-counter, decimal-leading-zero) ".";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: 0.9em;
  opacity: 0.7;
}

.note-box {
  background: rgba(0, 255, 157, 0.05);
  border-left: 3px solid var(--color-primary);
  padding: var(--space-md);
  margin: var(--space-md) 0;
  font-size: 0.95em;
  color: var(--color-text-main);
}

.note-box strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-primary);
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.8em;
  letter-spacing: 1px;
}

/* Warning Box - Caution Tape Style */
.warning-box {
  background: repeating-linear-gradient(45deg,
      rgba(255, 183, 0, 0.05),
      rgba(255, 183, 0, 0.05) 10px,
      rgba(0, 0, 0, 0) 10px,
      rgba(0, 0, 0, 0) 20px) !important;
  border: 1px solid var(--color-warning) !important;
  color: var(--color-warning) !important;
  font-family: var(--font-mono);
  padding: var(--space-md);
  margin: var(--space-md) 0;
  border-radius: 4px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
    padding: var(--space-md);
  }

  .main-content {
    margin-left: 0;
    padding: var(--space-md);
  }
}

/* Project Cards on Home Page */
.project-card-compact {
  display: flex;
  flex-direction: column;
  padding: 0;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--color-bg-surface);
  height: 100%;
}

.project-card-compact:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px rgba(0, 255, 157, 0.1);
}

.project-image-preview {
  width: 100%;
  height: 180px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.project-image-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card-compact:hover .project-image-preview img {
  transform: scale(1.1);
}

.project-info {
  padding: var(--space-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-info h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
  color: #fff;
}

.project-info p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.view-project {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.project-card-compact:hover .view-project {
  text-decoration: underline;
}

/* Optimization for Large Project Images */
.image-full img {
  width: auto !important;
  /* Override inline 100% to maintain aspect ratio */
  max-width: 100%;
  /* Ensure it doesn't overflow container */
  max-height: 600px;
  /* Restrict excessive height */
  display: block;
  margin: 0 auto;
  /* Center alignment */
  object-fit: contain;
  /* Ensure image is fully visible */
}

@media (max-width: 768px) {
  .image-full img {
    max-height: 400px;
  }
}

/* Global Content Image Fixes for Best Practices - Excluding Galleries */
.project-post img:not(.gallery-main-image):not(.gallery-thumbnail-item):not(.gallery-item img):not(.project-image-preview img),
.legacy-content img:not(.gallery-main-image):not(.gallery-thumbnail-item):not(.gallery-item img):not(.project-image-preview img),
.wsite-image img:not(.gallery-main-image):not(.gallery-thumbnail-item):not(.gallery-item img):not(.project-image-preview img) {
  max-width: 800px !important;
  /* Cap width for better readability */
  width: auto !important;
  height: auto !important;
  display: block;
  margin: 1rem auto;
  border-radius: 4px;
}

/* Code Snippet Styles & Syntax Highlighting */
pre {
  background: var(--color-bg-surface) !important;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  position: relative;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--color-text-main);
  background: transparent !important;
}

/* Syntax Colors - Integrated with highlight.js */
.hljs-comment,
.hljs-quote {
  color: var(--color-text-muted);
  font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-addition {
  color: var(--color-primary);
}

.hljs-number,
.hljs-string,
.hljs-meta,
.hljs-literal,
.hljs-doctag,
.hljs-regexp {
  color: #79c0ff;
}

.hljs-title,
.hljs-section,
.hljs-name,
.hljs-selector-id,
.hljs-selector-class {
  color: #d2a8ff;
}

.hljs-attribute,
.hljs-attr,
.hljs-variable,
.hljs-template-variable,
.hljs-class .hljs-title,
.hljs-type {
  color: #ffa657;
}

.hljs-symbol,
.hljs-bullet,
.hljs-subst,
.hljs-meta,
.hljs-link {
  color: #a5d6ff;
}

.hljs-built_in,
.hljs-deletion {
  color: var(--color-accent);
}

.hljs-formula {
  background-color: #eee;
  font-style: italic;
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: bold;
}

/* Legacy Content Lists */
.legacy-content ul,
.legacy-content ol {
  margin-top: var(--space-sm);
  margin-bottom: var(--space-sm);
  padding-left: var(--space-lg);
  /* 32px standard padding */
  margin-left: var(--space-md);
  /* Additional indent from text */
  list-style-position: outside;
}

.legacy-content ul {
  list-style-type: disc;
}

.legacy-content ol {
  list-style-type: decimal;
}

.legacy-content li {
  margin-bottom: var(--space-xs);
  color: var(--color-text-main);
}

/* =========================================
   Utilities & Common Components
   ========================================= */

/* Typography Utilities */
.text-center {
  text-align: center;
}

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

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

.text-muted {
  color: var(--color-text-muted);
}

.text-sm {
  font-size: 0.9em;
}

/* Spacing Utilities */
.mt-sm {
  margin-top: 0.5rem;
}

.mt-md {
  margin-top: 1rem;
}

.mt-lg {
  margin-top: 1.5rem;
}

.mb-sm {
  margin-bottom: 0.5rem;
}

.mb-md {
  margin-bottom: 1rem;
}

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

.my-sm {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.my-md {
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.my-lg {
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Font Size Utilities */
.text-sm {
  font-size: 0.9em;
}

.text-lg {
  font-size: 1.25em;
}

.text-xl {
  font-size: 1.5em;
}

/* Image Utilities */
.img-full {
  width: 100%;
  border-radius: 4px;
  display: block;
}

/* Component: Tech Table */
.tech-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-family: var(--font-mono);
  font-size: 0.9em;
  border: 1px solid var(--color-border);
}

.tech-table th,
.tech-table td {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.tech-table th {
  background-color: var(--color-bg-surface);
  color: var(--color-primary);
  font-weight: 600;
  border-bottom: 2px solid var(--color-border-active);
}

.tech-table tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Component: Video Container (Responsive) */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 4px;
  margin: 2rem 0;
  border: 1px solid var(--color-border);
  background: #000;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Component: Download Block */
.download-block {
  margin: 10px 0;
  padding: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.download-block a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: bold;
  color: var(--color-primary);
  text-decoration: none;
}

.download-block a:hover {
  text-decoration: underline;
  background: rgba(255, 255, 255, 0.05);
}

.download-block img {
  opacity: 0.8;
  width: 32px;
  /* Standard icon size */
  height: auto;
}

/* Component: Profile Header (About Page) */
.profile-card {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 40px;
  align-items: start;
  margin-bottom: var(--space-xl);
}

.profile-header h2 {
  color: var(--color-primary);
  font-weight: 300;
  font-size: 2rem;
  border-bottom: none;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .profile-card {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
}

.text-primary-dim {
  color: var(--color-primary);
  opacity: 0.5;
}

.projects-header {
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: 10px;
}
/* Technical Sharing Dock Styles */
.share-dock {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: rgba(0, 255, 157, 0.03);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.share-dock-header {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.share-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn-share {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 2px;
  text-decoration: none !important;
}

.btn-share:hover {
  border-color: var(--color-primary);
  color: #fff;
  background: var(--color-primary-dim);
  box-shadow: 0 0 10px var(--color-primary-dim);
}

.btn-share.btn-primary {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.share-success-msg {
  font-size: 0.7rem;
  color: var(--color-primary);
  font-style: italic;
  margin-left: 10px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.share-success-msg.visible {
  opacity: 1;
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }
}