:root {
  /* Color Palette - Cyber-Industrial Mono with Neon Accents */
  --bg-primary: #0a0a0c;
  --bg-secondary: #141417;
  --bg-tertiary: #1c1c21;
  --text-primary: #f0f0f2;
  --text-secondary: #a1a1aa;
  --accent: #ccff00; /* Neon Lime */
  --accent-muted: #2d3312;
  --border-color: #27272a;
  --border-hover: #3f3f46;
  --glass: rgba(20, 20, 23, 0.8);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  
  /* Typography */
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SF Mono', Menlo, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  display: flex;
  min-height: 100vh;
  overflow: hidden;
}

/* Extension Dashboard Layout */
.dashboard-container {
  display: grid;
  grid-template-columns: 380px 1fr;
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
}

.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100vh;
  z-index: 20;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  position: relative;
}

/* Chat Layout */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  padding: var(--space-xl);
  overflow-y: auto;
}

.chat-bubble {
  margin-bottom: var(--space-xl);
  max-width: 85%;
}

.chat-bubble.user {
  align-self: flex-end;
}

.chat-bubble.ai {
  align-self: flex-start;
}

.bubble-content {
  padding: var(--space-md) var(--space-lg);
  border-radius: 12px;
  line-height: 1.6;
}

.user .bubble-content {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
}

.ai .bubble-content {
  background: transparent;
  padding-left: 0;
}

.bubble-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-input-area {
  padding: var(--space-xl);
  background: linear-gradient(to top, var(--bg-primary) 80%, transparent);
  border-top: 1px solid transparent;
}

.input-wrapper {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px;
  transition: border-color 0.2s ease;
}

.input-wrapper:focus-within {
  border-color: var(--accent);
}

.input-wrapper textarea {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 12px;
  resize: none;
  outline: none;
  min-height: 44px;
  max-height: 200px;
}

.input-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-top: 1px solid var(--border-color);
  margin-top: 8px;
}

.action-btns {
  display: flex;
  gap: 8px;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

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

.send-btn {
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
}

/* Extension Container - Legacy/Shell Refactored */
.extension-shell {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  border-radius: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: none;
}

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

.brand-section h1 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--accent);
}

.brand-section p {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 180px;
  line-height: 1.3;
}

.settings-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

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

.security-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  padding: 4px 8px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  margin-top: 12px;
  width: fit-content;
  border: 1px solid var(--border-color);
}

.security-badge svg {
  color: var(--accent);
}

/* Scrollable Content */
.extension-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

/* Context Card */
.context-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: var(--space-md);
  position: relative;
  transition: border-color 0.2s ease;
}

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

.context-card-content {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 80px;
}

.context-card-content strong {
  color: var(--accent);
  font-weight: 500;
}

.edit-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
}

.context-meta {
  margin-top: 12px;
  font-size: 11px;
  color: var(--text-secondary);
  font-style: italic;
}

/* History */
.history-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: 1px dashed var(--border-color);
  padding: 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s ease;
}

.history-trigger:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

/* AI Selector */
.ai-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ai-item.active {
  background: var(--accent-muted);
  border-color: var(--accent);
}

.ai-item:hover:not(.active) {
  background: var(--bg-tertiary);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-color);
}

.active .status-indicator {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.ai-name {
  flex: 1;
  font-weight: 500;
  font-size: 13px;
}

.ai-tag {
  font-size: 10px;
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-secondary);
}

/* Footer */
.extension-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  border-radius: 6px;
  font-weight: 700;
  font-family: var(--font-mono);
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.1s ease, filter 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:hover {
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: scale(0.98);
}

.footer-note {
  margin-top: 16px;
  text-align: center;
  font-size: 10px;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Utility */
.placeholder-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Animated grain effect */
.sidebar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://grainy-gradients.vercel.app/noise.svg');
  opacity: 0.03;
  pointer-events: none;
  z-index: 10;
}