@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,700;1,400&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* --- DESIGN SYSTEM TOKENS --- */
:root {
  --bg-primary: #06070a;
  --bg-secondary: #0d0f14;
  --bg-tertiary: #13161c;
  --bg-terminal: #07080b;
  
  --accent: #00ffaa;
  --accent-rgb: 0, 255, 170;
  --accent-glow: rgba(0, 255, 170, 0.15);
  
  --accent-alt: #00e5ff;
  --accent-alt-rgb: 0, 229, 255;
  --accent-alt-glow: rgba(0, 229, 255, 0.15);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.05);
  --border-glow: rgba(0, 255, 170, 0.2);
  --border-hover: rgba(255, 255, 255, 0.12);

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 20px -8px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 25px rgba(0, 255, 170, 0.08);
  
  --max-width: 1280px;
}

/* --- RESET & BASE STYLES --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(0, 255, 170, 0.02) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(0, 229, 255, 0.02) 0%, transparent 45%);
  background-attachment: fixed;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border: 2px solid var(--bg-primary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

input, button, textarea {
  font-family: inherit;
  font-size: inherit;
  background: none;
  border: none;
  color: inherit;
}

button {
  cursor: pointer;
}

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

/* --- UTILITY CLASSES --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.glow-text {
  text-shadow: 0 0 10px rgba(var(--accent-rgb), 0.3);
}

.accent-color {
  color: var(--accent);
}

.mono {
  font-family: var(--font-mono);
}

/* --- LAYOUT STRUCTURE --- */
#app-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: 100vh;
  position: relative;
}

/* --- SIDEBAR PROFILE --- */
aside {
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  z-index: 10;
}

.author-profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.avatar-wrapper {
  position: relative;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  margin-bottom: 1.25rem;
  padding: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.15);
}

.avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background-color: var(--bg-primary);
  border: 3px solid var(--bg-secondary);
}

.status-dot {
  position: absolute;
  bottom: 5px;
  right: 5px;
  width: 16px;
  height: 16px;
  background-color: var(--accent);
  border: 3px solid var(--bg-secondary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
}

.author-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.author-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.author-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1rem;
}

.skill-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition-fast);
}

.nav-item i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.nav-item:hover, .nav-item.active {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border-left: 3px solid var(--accent);
  padding-left: calc(1rem - 3px);
}

.nav-item.active {
  background-color: rgba(var(--accent-rgb), 0.03);
  color: var(--accent);
}

.sidebar-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: center;
  gap: 1.25rem;
}

.social-icon {
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.social-icon:hover {
  color: var(--accent);
  transform: translateY(-2px);
  text-shadow: 0 0 8px rgba(var(--accent-rgb), 0.5);
}

/* --- MAIN CONTENT CONTAINER --- */
main {
  padding: 3rem 4rem;
  overflow-y: auto;
  height: 100vh;
}

/* --- HEADER BAR (MOBILE/TABLET) --- */
.mobile-header {
  display: none;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.mobile-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.menu-toggle {
  font-size: 1.5rem;
  color: var(--text-primary);
}

/* --- HERO SECTION --- */
.hero {
  margin-bottom: 3.5rem;
}

.blog-tagline {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
  display: block;
}

.blog-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--text-primary) 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.blog-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin-bottom: 2rem;
}

.search-filter-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.search-bar {
  position: relative;
  flex: 1;
  max-width: 450px;
}

.search-bar i {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-input {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1rem 0.8rem 2.75rem;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: var(--transition-normal);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.05);
}

/* Filter Tags */
.filter-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background-color: rgba(255, 255, 255, 0.02);
}

.filter-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background-color: rgba(var(--accent-rgb), 0.05);
  box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.1);
}

/* --- INTERACTIVE TERMINAL WIDGET --- */
.terminal-section {
  margin-bottom: 3.5rem;
}

.terminal-container {
  background-color: var(--bg-terminal);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}

.terminal-container::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.25) 50%
  ), linear-gradient(
    90deg, 
    rgba(255, 0, 0, 0.03), 
    rgba(0, 255, 0, 0.01), 
    rgba(0, 0, 255, 0.03)
  );
  background-size: 100% 4px, 6px 100%;
  z-index: 2;
  pointer-events: none;
}

.terminal-header {
  background-color: #12151b;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.terminal-buttons {
  display: flex;
  gap: 0.5rem;
}

.term-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.term-btn.red { background-color: #ff5f56; }
.term-btn.yellow { background-color: #ffbd2e; }
.term-btn.green { background-color: #27c93f; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.terminal-status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.term-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  animation: pulse-glow 1.5s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.9); opacity: 0.6; box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.7); }
  70% { transform: scale(1); opacity: 1; box-shadow: 0 0 0 6px rgba(var(--accent-rgb), 0); }
  100% { transform: scale(0.9); opacity: 0.6; box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0); }
}

.terminal-body {
  padding: 1.5rem;
  height: 280px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #a5b4fc;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  scroll-behavior: smooth;
}

.term-line {
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
}

.term-line.output {
  color: var(--text-secondary);
}

.term-line.error {
  color: #f43f5e;
}

.term-line.success {
  color: var(--accent);
}

.term-line.welcome {
  color: var(--accent-alt);
  font-weight: bold;
}

.term-input-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
}

.term-prompt {
  color: var(--accent);
}

.term-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  caret-color: var(--accent);
}

/* --- POSTS GRID --- */
.posts-section-header {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.posts-section-header i {
  color: var(--accent);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.75rem;
  margin-bottom: 4rem;
}

.post-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  cursor: pointer;
  position: relative;
}

.post-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.post-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

.post-card:hover::before {
  opacity: 1;
}

.post-banner-placeholder {
  height: 160px;
  background: linear-gradient(135deg, rgba(13, 15, 20, 0.9) 0%, rgba(6, 7, 10, 0.95) 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.post-banner-svg {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0.15;
  stroke: var(--accent);
  stroke-width: 0.5px;
}

.post-banner-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 4px;
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background-color: rgba(6, 7, 10, 0.5);
  backdrop-filter: blur(4px);
}

.post-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.post-meta-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.post-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.post-card:hover .post-card-title {
  color: var(--accent);
}

.post-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.02);
}

.post-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-alt);
  background-color: rgba(var(--accent-alt-rgb), 0.05);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(var(--accent-alt-rgb), 0.1);
}

.post-read-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-primary);
}

.post-card:hover .post-read-link {
  color: var(--accent);
}

.post-card:hover .post-read-link i {
  transform: translateX(3px);
}

.post-read-link i {
  transition: transform var(--transition-fast);
}

/* --- ARTICLE READER VIEW (SPA VIEW) --- */
.article-view {
  display: none; /* Controlled by JS */
  max-width: 800px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.article-view.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.back-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.05);
}

.article-header {
  margin-bottom: 2.5rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

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

.article-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.article-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.article-banner {
  height: 350px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: 3rem;
  border: 1px solid var(--border-color);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(13, 15, 20, 0.95) 0%, rgba(6, 7, 10, 0.95) 100%);
}

.article-banner-text {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--accent);
  letter-spacing: 5px;
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  background-color: rgba(6, 7, 10, 0.6);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-glow);
}

/* Reading Progress Bar */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  width: 0%;
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* Article Body Typography */
.article-content {
  font-size: 1.1rem;
  color: #cbd5e1;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 3rem 0 1.25rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.article-content h2::before {
  content: "##";
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.2rem;
}

.article-content h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

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

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

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

/* Blockquotes */
.article-content blockquote {
  background-color: rgba(255, 255, 255, 0.02);
  border-left: 4px solid var(--accent);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-content blockquote strong {
  color: var(--text-primary);
}

/* Inline Code & Code Blocks */
.article-content code:not([class]) {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: rgba(255, 255, 255, 0.06);
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  color: var(--accent-alt);
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.code-block-wrapper {
  margin: 2rem 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #08090d;
}

.code-block-header {
  background-color: #111318;
  padding: 0.6rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.code-block-lang {
  color: var(--text-secondary);
}

.copy-code-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition-fast);
}

.copy-code-btn:hover {
  color: var(--accent);
}

.article-content pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  color: #e2e8f0;
}

/* Technical Callout Alert boxes */
.callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  margin: 2rem 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.callout.info {
  background-color: rgba(0, 229, 255, 0.02);
  border-color: rgba(0, 229, 255, 0.15);
}

.callout.info i {
  color: var(--accent-alt);
}

.callout.warning {
  background-color: rgba(234, 179, 8, 0.02);
  border-color: rgba(234, 179, 8, 0.15);
}

.callout.warning i {
  color: #eab308;
}

.callout-icon {
  font-size: 1.25rem;
  margin-top: 0.1rem;
}

.callout-content {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.callout-content strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.25rem;
}

/* Article Disclaimer */
.article-disclaimer {
  margin-top: 4rem;
  padding: 1.5rem;
  background-color: rgba(244, 63, 94, 0.02);
  border: 1px solid rgba(244, 63, 94, 0.15);
  border-radius: var(--radius-lg);
  display: flex;
  gap: 1rem;
}

.article-disclaimer i {
  color: #f43f5e;
  font-size: 1.5rem;
  margin-top: 0.1rem;
}

.disclaimer-title {
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.disclaimer-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- NEWSLETTER SECTION --- */
.newsletter-card {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(13, 15, 20, 0.7) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: 4rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.newsletter-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(var(--accent-rgb), 0.01) 0%, transparent 60%);
  pointer-events: none;
}

.newsletter-icon {
  width: 60px;
  height: 60px;
  background-color: rgba(var(--accent-rgb), 0.05);
  border: 1px solid rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1.5rem;
  box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.1);
}

.newsletter-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.newsletter-desc {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 2rem;
  font-size: 1rem;
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  gap: 0.75rem;
}

.newsletter-input {
  flex: 1;
  background-color: rgba(6, 7, 10, 0.6);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1.25rem;
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  transition: var(--transition-normal);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.05);
}

.newsletter-btn {
  background-color: var(--accent);
  color: var(--bg-primary);
  font-weight: 700;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
  box-shadow: 0 4px 15px rgba(var(--accent-rgb), 0.2);
}

.newsletter-btn:hover {
  background-color: #00e594;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(var(--accent-rgb), 0.3);
}

/* Footer Section */
.footer-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 1024px) {
  #app-layout {
    grid-template-columns: 280px 1fr;
  }
  main {
    padding: 2.5rem;
  }
  .blog-title {
    font-size: 3rem;
  }
}

@media (max-width: 820px) {
  #app-layout {
    grid-template-columns: 1fr;
  }
  
  /* Slide-out Mobile Sidebar */
  aside {
    position: fixed;
    left: -100%;
    top: 61px; /* Height of mobile header */
    width: 280px;
    height: calc(100vh - 61px);
    transition: left var(--transition-normal) ease-in-out;
    background-color: var(--bg-secondary);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    z-index: 99;
  }
  
  aside.mobile-open {
    left: 0;
  }
  
  .mobile-header {
    display: flex;
  }
  
  main {
    padding: 2rem 1.5rem;
    height: auto;
    overflow-y: visible;
  }
  
  .hero {
    margin-bottom: 2.5rem;
  }
  
  .blog-title {
    font-size: 2.5rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .blog-title {
    font-size: 2rem;
  }
  
  .search-filter-row {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-bar {
    max-width: none;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-card {
    padding: 2rem 1rem;
  }
  
  .article-title {
    font-size: 2rem;
  }
  
  .article-banner {
    height: 200px;
  }
}

/* Mermaid Diagram Rendering Container */
.mermaid-chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: auto;
}
.mermaid-chart-container svg {
  max-width: 100%;
  height: auto;
}

/* Quick Tools Terminal Toolbar */
.terminal-toolbar {
  background-color: #0e1117;
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-top: none;
}

.toolbar-label {
  color: var(--text-muted);
  margin-right: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.toolbar-btn {
  background-color: rgba(0, 255, 157, 0.03);
  border: 1px solid rgba(0, 255, 157, 0.15);
  border-radius: 4px;
  color: var(--accent);
  padding: 0.2rem 0.55rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  transition: all var(--transition-fast) ease;
  outline: none;
}

.toolbar-btn:hover {
  background-color: rgba(0, 255, 157, 0.12);
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(0, 255, 157, 0.25);
  transform: translateY(-1px);
}

.toolbar-btn:active {
  transform: translateY(0);
}