/* TRON-inspired Theme for 80x24.ch Blog */
/* CSS Custom Properties */
:root {
  /* Colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a25;
  
  /* Neon Accents */
  --color-neon-cyan: #00f0ff;
  --color-neon-green: #0aff0a;
  --color-neon-amber: #ffb000;
  --color-neon-pink: #ff00aa;
  
  /* Text Colors */
  --color-text-primary: #e0e0e0;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #606060;
  
  /* Grid Lines */
  --color-grid: rgba(0, 240, 255, 0.1);
  --color-grid-strong: rgba(0, 240, 255, 0.2);
  
  /* Typography */
  --font-mono: 'Courier New', 'Fira Code', 'Consolas', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  
  /* Glow Effects */
  --glow-cyan: 0 0 10px rgba(0, 240, 255, 0.5), 0 0 20px rgba(0, 240, 255, 0.3), 0 0 30px rgba(0, 240, 255, 0.1);
  --glow-green: 0 0 10px rgba(10, 255, 10, 0.5), 0 0 20px rgba(10, 255, 10, 0.3), 0 0 30px rgba(10, 255, 10, 0.1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Grid Background Effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

/* Horizontal scanline effect */
/* Disabled per preference: moving scanline can be distracting. */
body::after {
  content: none;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-neon-cyan);
  color: var(--color-bg-primary);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-decoration: none;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
  outline: 2px solid var(--color-neon-amber);
  outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-mono);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-primary);
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-neon-cyan);
  text-decoration: none;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
}

a:hover {
  color: var(--color-neon-green);
  text-shadow: var(--glow-cyan);
}

a:focus {
  outline: 2px solid var(--color-neon-cyan);
  outline-offset: 2px;
}

/* Code blocks */
code {
  font-family: var(--font-mono);
  background: var(--color-bg-tertiary);
  padding: 0.125em 0.375em;
  border-radius: 3px;
  font-size: 0.9em;
  color: var(--color-neon-green);
}

pre {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-grid-strong);
  border-radius: 8px;
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

pre code {
  background: none;
  padding: 0;
  color: var(--color-text-primary);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Header */
.site-header {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-grid-strong);
  padding: var(--space-lg) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.site-logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-logo span {
  color: var(--color-neon-cyan);
  text-shadow: var(--glow-cyan);
}

.main-nav {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.main-nav a {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  padding: var(--space-xs) 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-neon-cyan);
  transition: width var(--transition-normal);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-neon-cyan);
  text-shadow: var(--glow-cyan);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: transparent;
  color: var(--color-neon-cyan);
  border-color: var(--color-neon-cyan);
}

.btn-primary:hover {
  background: var(--color-neon-cyan);
  color: var(--color-bg-primary);
  text-shadow: none;
  box-shadow: var(--glow-cyan);
}

.btn-secondary {
  background: transparent;
  color: var(--color-neon-green);
  border-color: var(--color-neon-green);
}

.btn-secondary:hover {
  background: var(--color-neon-green);
  color: var(--color-bg-primary);
  text-shadow: none;
  box-shadow: var(--glow-green);
}

/* Main Content */
.main-content {
  padding: var(--space-2xl) 0;
}

/* Page Header */
.page-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

.page-header .subtitle {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Blog Post Card */
.post-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-grid);
  border-radius: 8px;
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-green));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.post-card:hover {
  border-color: var(--color-neon-cyan);
  transform: translateY(-4px);
  box-shadow: var(--glow-cyan);
}

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

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

.post-card .post-meta::before {
  content: '//';
  color: var(--color-neon-cyan);
  margin-right: var(--space-xs);
}

.post-card h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.post-card h2 a {
  color: var(--color-text-primary);
}

.post-card h2 a:hover {
  color: var(--color-neon-cyan);
}

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

.post-card .post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-grid);
  border-radius: 3px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag:hover {
  border-color: var(--color-neon-cyan);
  color: var(--color-neon-cyan);
}

/* Post Actions (Play button) */
.post-actions {
  margin-top: var(--space-lg);
  display: flex;
  gap: var(--space-sm);
}

.post-actions .btn-play {
  background: transparent;
  color: var(--color-neon-green);
  border-color: var(--color-neon-green);
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-md);
}

.post-actions .btn-play:hover {
  background: var(--color-neon-green);
  color: var(--color-bg-primary);
  text-shadow: none;
  box-shadow: var(--glow-green);
}

/* Single Post */
.post-header {
  margin-bottom: var(--space-2xl);
  text-align: center;
}

.post-header .post-meta {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-md);
}

.post-header h1 {
  background: linear-gradient(90deg, var(--color-text-primary), var(--color-neon-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.post-content {
  max-width: 750px;
  margin: 0 auto;
}

.post-content h2 {
  color: var(--color-neon-cyan);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-grid);
}

.post-content h3 {
  color: var(--color-neon-green);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.post-content ul,
.post-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.post-content li {
  margin-bottom: var(--space-sm);
}

.post-content blockquote {
  border-left: 3px solid var(--color-neon-cyan);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--color-grid);
  margin: var(--space-lg) 0;
}

/* Post Navigation */
.post-navigation {
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-grid);
}

.post-navigation a {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.post-navigation a:hover {
  color: var(--color-neon-cyan);
}

.post-navigation .next {
  text-align: right;
  margin-left: auto;
}

/* Footer */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-grid-strong);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-2xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.footer-section h4 {
  font-family: var(--font-mono);
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-section p,
.footer-section a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.footer-section a:hover {
  color: var(--color-neon-cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  margin-top: var(--space-xl);
  border-top: 1px solid var(--color-grid);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.footer-bottom .heart {
  color: var(--color-neon-pink);
}

/* Responsive */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .main-nav {
    width: 100%;
    justify-content: flex-start;
  }
  
  .post-navigation {
    flex-direction: column;
  }
  
  .post-navigation .next {
    text-align: left;
    margin-left: 0;
  }
}

/* Print styles */
@media print {
  body::before,
  body::after {
    display: none;
  }
  
  .main-nav,
  .post-navigation {
    display: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  body::after {
    animation: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --color-grid: rgba(0, 240, 255, 0.3);
    --color-text-secondary: #ffffff;
  }
}

/* Game Page Specific Styles */
.game-container {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    radial-gradient(ellipse at center, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  background-size: 40px 40px, 40px 40px, 100% 100%;
  background-position: center center;
  background-repeat: no-repeat;
}

/* Canvas */
#gameCanvas {
  border: 2px solid var(--color-neon-cyan);
  box-shadow:
    0 0 20px rgba(0, 240, 255, 0.3),
    inset 0 0 50px rgba(0, 240, 255, 0.05);
}

/* Screens */
.screen {
  position: absolute;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  z-index: 10;
  text-align: center;
  padding: 3rem;
  background: rgba(10, 10, 18, 0.75);
  border: 1px solid var(--color-neon-cyan);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.2);
}

.screen.active {
  display: flex;
}

.screen .title {
  font-size: 3rem;
  font-weight: bold;
  letter-spacing: 0.5rem;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.screen .neon-text {
  color: var(--color-neon-cyan);
  text-shadow:
    0 0 5px var(--color-neon-cyan),
    0 0 10px var(--color-neon-cyan),
    0 0 20px var(--color-neon-cyan);
}

.screen .instructions {
  font-size: 1.2rem;
  line-height: 2;
  color: var(--color-text-secondary);
}

.screen .instructions .key {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--color-neon-cyan);
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--color-neon-cyan);
  font-family: var(--font-mono);
  box-shadow: 0 0 5px var(--color-neon-cyan);
  margin: 0 0.2rem;
}

.screen .btn {
  padding: 1rem 3rem;
  font-size: 1.1rem;
  font-family: var(--font-mono);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.2rem;
  cursor: pointer;
  background: transparent;
  border: 2px solid var(--color-neon-cyan);
  color: var(--color-neon-cyan);
  transition: all var(--transition-normal);
}

.screen .btn:hover {
  background: rgba(0, 240, 255, 0.2);
  box-shadow:
    0 0 20px var(--color-neon-cyan),
    inset 0 0 20px rgba(0, 240, 255, 0.1);
}

/* Score Display */
.score-display {
  font-size: 1.5rem;
  line-height: 2;
  font-family: var(--font-mono);
}

.score-display p {
  color: var(--color-text-primary);
  margin: 0;
}

.score-display span {
  color: var(--color-neon-green);
  text-shadow: 0 0 10px var(--color-neon-green);
}

/* HUD */
.game-container .hud {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 3rem;
  font-size: 1.2rem;
  z-index: 5;
  padding: 0.5rem 1.5rem;
  background: rgba(10, 10, 18, 0.8);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 4px;
  font-family: var(--font-mono);
}

.game-container .hud .score {
  color: var(--color-neon-cyan);
}

.game-container .hud .high-score {
  color: var(--color-neon-amber);
}

.game-container .hud span {
  font-weight: bold;
  text-shadow: 0 0 5px currentColor;
}

/* Particle Effects */
.particle {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  animation: particleFade 1s ease-out forwards;
}

@keyframes particleFade {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0);
  }
}

/* Responsive Game */
@media (max-width: 768px) {
  .screen .title {
    font-size: 2rem;
    letter-spacing: 0.25rem;
  }

  .screen .instructions {
    font-size: 1rem;
  }

  .screen {
    padding: 2rem;
  }

  .game-container .hud {
    font-size: 1rem;
    gap: 1.5rem;
  }
}

/* Center Play Menu Item */
.main-nav {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  align-items: center;
}

.main-nav .nav-play {
  margin: 0;
}

.main-nav .nav-play::after {
  left: 0;
  right: 0;
  width: 0;
  transition: width var(--transition-normal);
}

.main-nav .nav-play:hover::after,
.main-nav .nav-play.active::after {
  width: 100%;
}

/* Logo Cursor Blink */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.site-logo::after {
  content: '_';
  color: var(--color-neon-cyan);
  animation: blink 1s infinite;
  margin-left: 2px;
}

/* Reading Progress Bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-green));
  z-index: 10000;
  width: 0%;
}

/* Chat Header */
.chat-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-grid);
  background: var(--color-bg-tertiary);
}

.chat-logo {
  font-size: 1.5rem;
  color: var(--color-neon-cyan);
  text-shadow: var(--glow-cyan);
}

.chat-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Chat Interface */
.oracle-container {
  max-width: 800px;
  margin: 0 auto;
}

.chat-interface {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-grid);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 500px;
}

.chat-response {
  flex: 1;
  padding: var(--space-lg);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-height: 60vh;
}

.chat-message {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  animation: fadeIn 0.3s ease;
}

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

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-grid);
}

.oracle-message .message-avatar {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--color-neon-cyan);
  color: var(--color-neon-cyan);
}

.user-message .message-avatar {
  background: rgba(10, 255, 10, 0.1);
  border-color: var(--color-neon-green);
}

.error-message .message-avatar {
  background: rgba(255, 176, 0, 0.1);
  border-color: var(--color-neon-amber);
  color: var(--color-neon-amber);
}

.message-content {
  flex: 1;
  padding-top: 4px;
}

.message-content p {
  margin: 0;
  line-height: 1.6;
  color: var(--color-text-primary);
}

.message-content .streaming-text {
  min-height: 1.6em;
}

.chat-input-area {
  border-top: 1px solid var(--color-grid);
  padding: var(--space-md);
  background: var(--color-bg-tertiary);
}

.chat-input-wrapper {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.chat-input-wrapper input {
  flex: 1;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-grid);
  border-radius: 8px;
  padding: var(--space-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.chat-input-wrapper input:focus {
  border-color: var(--color-neon-cyan);
}

.chat-input-wrapper input::placeholder {
  color: var(--color-text-muted);
}

.chat-input-wrapper input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive chat */
@media (max-width: 600px) {
  .chat-interface {
    min-height: 400px;
  }

  .chat-response {
    padding: var(--space-md);
    max-height: 50vh;
  }

  .message-avatar {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  .chat-input-wrapper {
    flex-direction: column;
  }

  .chat-input-wrapper input {
    width: 100%;
  }

  .chat-input-wrapper .btn {
    width: 100%;
    justify-content: center;
  }
}