/* ============================================================
   DotTunel Neo - Design System
   Modern Glassmorphism + Cyberpunk Terminal
   ============================================================ */

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

/* ==================== CSS VARIABLES ==================== */
:root {
  /* Background Layers */
  --bg-base: #0B0F19;
  --bg-surface: rgba(15, 23, 42, 0.7);
  --bg-elevated: rgba(30, 41, 59, 0.6);
  --bg-glass: rgba(15, 23, 42, 0.4);
  --bg-terminal: rgba(0, 0, 0, 0.6);
  
  /* Glass Effect */
  --glass-border: rgba(148, 163, 184, 0.08);
  --glass-border-hover: rgba(6, 182, 212, 0.2);
  --glass-highlight: rgba(255, 255, 255, 0.05);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  
  /* Primary: Electric Cyan */
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --cyan-glow: rgba(6, 182, 212, 0.3);
  --cyan-glow-strong: rgba(6, 182, 212, 0.5);
  
  /* Secondary: Neon Purple */
  --purple-400: #a78bfa;
  --purple-500: #8b5cf6;
  --purple-600: #7c3aed;
  --purple-glow: rgba(139, 92, 246, 0.3);
  
  /* Accent: Warning Amber */
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.3);
  
  /* Status Colors */
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.3);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.3);
  --error: #ef4444;
  --error-glow: rgba(239, 68, 68, 0.3);
  --info: #3b82f6;
  --info-glow: rgba(59, 130, 246, 0.3);
  
  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

html {
  font-size: 15px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow: hidden;
}

/* ==================== LAYOUT ==================== */
.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  grid-template-rows: 60px 1fr 32px;
  grid-template-areas:
    "sidebar header"
    "sidebar content"
    "sidebar status";
  height: 100vh;
  max-width: 1920px;
  margin: 0 auto;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, rgba(15,23,42,0.95) 0%, rgba(11,15,25,0.98) 100%);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--glass-border);
  padding: var(--space-4);
  gap: var(--space-2);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--text-dim) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--text-dim);
  border-radius: 4px;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-2);
  margin-bottom: var(--space-4);
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--cyan-500), var(--purple-500));
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  box-shadow: 0 0 20px var(--cyan-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-text h1 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--cyan-400), var(--purple-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: var(--space-2) var(--space-3);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background: rgba(6, 182, 212, 0.08);
  color: var(--text-primary);
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(6,182,212,0.15) 0%, transparent 100%);
  color: var(--cyan-400);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--cyan-500);
  border-radius: 0 3px 3px 0;
  box-shadow: 0 0 10px var(--cyan-glow);
}

.nav-item .icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

.nav-item .badge {
  margin-left: auto;
  background: var(--error);
  color: white;
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 600;
}

/* ==================== HEADER ==================== */
.header {
  grid-area: header;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breadcrumb .separator {
  color: var(--text-dim);
}

.breadcrumb .current {
  color: var(--text-primary);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-trigger:hover {
  border-color: var(--glass-border-hover);
  color: var(--text-secondary);
}

.search-trigger kbd {
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

/* ==================== CONTENT AREA ==================== */
.content {
  grid-area: content;
  padding: var(--space-6);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--text-dim) transparent;
}

.content::-webkit-scrollbar {
  width: 6px;
}

.content::-webkit-scrollbar-thumb {
  background: var(--text-dim);
  border-radius: 3px;
}

.page {
  display: none;
  animation: pageEnter 0.3s ease-out;
}

.page.active {
  display: block;
}

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

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.page-header h2 .icon {
  font-size: 1.3rem;
}

.page-actions {
  display: flex;
  gap: var(--space-3);
}

/* ==================== GLASS CARDS ==================== */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan-500), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.glass-card:hover::before {
  opacity: 0.5;
}

.glass-card.accent-cyan::before {
  background: linear-gradient(90deg, transparent, var(--cyan-500), transparent);
  opacity: 0.3;
}

.glass-card.accent-purple::before {
  background: linear-gradient(90deg, transparent, var(--purple-500), transparent);
  opacity: 0.3;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1rem;
  font-weight: 600;
}

.card-title .icon {
  font-size: 1.2rem;
}

.card-tag {
  font-size: 0.65rem;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-tag.ok {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.card-tag.warn {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.card-tag.err {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ==================== GRID LAYOUTS ==================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-6);
}

/* ==================== METRICS ==================== */
.metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--glass-border);
}

.metric:last-child {
  border-bottom: none;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.metric-value.mono {
  color: var(--cyan-400);
}

/* ==================== PROGRESS BARS ==================== */
.progress-container {
  margin-top: var(--space-4);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.progress-bar {
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: shimmer 2s infinite;
}

.progress-fill.cpu {
  background: linear-gradient(90deg, var(--cyan-600), var(--cyan-400));
}

.progress-fill.mem {
  background: linear-gradient(90deg, var(--success), var(--cyan-400));
}

.progress-fill.disk {
  background: linear-gradient(90deg, var(--warning), var(--amber-400));
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ==================== FORMS ==================== */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--cyan-500);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-dim);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.input-group {
  display: flex;
}

.input-prefix {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.input-group .form-input {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ==================== CHECKBOXES ==================== */
.check-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.check-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.check-item:hover {
  border-color: var(--glass-border-hover);
  background: var(--bg-elevated);
}

.check-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--cyan-500);
}

.check-item label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
  color: var(--bg-base);
  box-shadow: 0 0 20px var(--cyan-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px var(--cyan-glow-strong);
}

.btn-secondary {
  background: transparent;
  border-color: var(--cyan-500);
  color: var(--cyan-400);
}

.btn-secondary:hover {
  background: rgba(6, 182, 212, 0.1);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

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

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--error);
  color: var(--error);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: 0.8rem;
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn .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); }
}

/* ==================== TERMINAL ==================== */
.terminal-panel {
  background: var(--bg-terminal);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(6, 182, 212, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: rgba(15, 23, 42, 0.8);
  border-bottom: 1px solid var(--glass-border);
}

.terminal-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.terminal-title::before {
  content: '●';
  color: var(--cyan-500);
  font-size: 0.6rem;
}

.terminal-actions {
  display: flex;
  gap: var(--space-2);
}

.terminal-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.terminal-content {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
}

.terminal-line {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-1);
  animation: lineEnter 0.2s ease-out;
}

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

.terminal-timestamp {
  color: var(--text-dim);
  font-size: 0.75rem;
  flex-shrink: 0;
  width: 65px;
}

.terminal-prefix {
  color: var(--cyan-400);
  flex-shrink: 0;
}

.terminal-prefix.sys { color: var(--text-muted); }
.terminal-prefix.cmd { color: var(--warning); }
.terminal-prefix.ok { color: var(--success); }
.terminal-prefix.err { color: var(--error); }
.terminal-prefix.warn { color: var(--warning); }

.terminal-text {
  color: var(--text-secondary);
  word-break: break-all;
  white-space: pre-wrap;
}

.terminal-text.command { color: var(--cyan-400); }
.terminal-text.output { color: var(--text-secondary); }
.terminal-text.error { color: var(--error); }
.terminal-text.success { color: var(--success); }
.terminal-text.warning { color: var(--warning); }

/* ==================== AI PANEL ==================== */
.ai-panel {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.1));
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.ai-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.ai-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--purple-500), var(--cyan-500));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 0 20px var(--purple-glow);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px var(--purple-glow); }
  50% { box-shadow: 0 0 40px var(--purple-glow); }
}

.ai-info {
  flex: 1;
}

.ai-info h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.ai-confidence {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.ai-confidence.high { color: var(--success); }
.ai-confidence.medium { color: var(--warning); }
.ai-confidence.low { color: var(--error); }

.ai-actions {
  display: flex;
  gap: var(--space-3);
}

/* ==================== PLAN STEPS ==================== */
.plan-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.plan-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}

.plan-step.completed {
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.05);
}

.plan-step.active {
  border-color: var(--cyan-500);
  background: rgba(6, 182, 212, 0.05);
}

.plan-step.pending {
  opacity: 0.6;
}

.step-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.step-icon.done {
  background: var(--success);
  color: white;
}

.step-icon.current {
  background: var(--cyan-500);
  color: white;
  animation: pulse 2s infinite;
}

.step-icon.wait {
  background: var(--bg-elevated);
  color: var(--text-dim);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.step-text {
  flex: 1;
  font-size: 0.9rem;
}

.step-progress {
  width: 100px;
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 2px;
  overflow: hidden;
}

.step-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-500), var(--purple-500));
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* ==================== MODE SELECTOR ==================== */
.mode-selector {
  display: flex;
  background: var(--bg-input);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.mode-btn {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: none;
  background: none;
  color: var(--text-dim);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-btn:hover {
  color: var(--text-secondary);
}

.mode-btn.active {
  background: var(--bg-card);
  color: var(--cyan-400);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ==================== TOGGLE SWITCH ==================== */
.toggle-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.toggle-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--bg-elevated);
  border-radius: 12px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle-item input:checked + .toggle-switch {
  background: var(--cyan-500);
}

.toggle-item input:checked + .toggle-switch::after {
  transform: translateX(20px);
  background: white;
}

.toggle-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ==================== STATUS BAR ==================== */
.status-bar {
  grid-area: status;
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  background: var(--bg-surface);
  border-top: 1px solid var(--glass-border);
  font-size: 0.75rem;
  color: var(--text-muted);
  gap: var(--space-6);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success-glow);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.status-metric {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.status-metric .label {
  color: var(--text-dim);
}

.status-metric .value {
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.status-version {
  margin-left: auto;
  color: var(--text-dim);
}

/* ==================== TOAST NOTIFICATIONS ==================== */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: var(--bg-elevated);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  min-width: 300px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  animation: toastEnter 0.3s ease-out, toastExit 0.3s ease-in 4.7s forwards;
}

@keyframes toastEnter {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastExit {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20px); }
}

.toast-icon {
  font-size: 1.2rem;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.error { border-left: 3px solid var(--error); }

/* ==================== COMMAND PALETTE ==================== */
.palette-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
}

.palette-overlay.active {
  display: flex;
}

.palette {
  background: var(--bg-elevated);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  width: 600px;
  max-width: 90vw;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.palette-input {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--glass-border);
}

.palette-input input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
}

.palette-input kbd {
  background: var(--bg-glass);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.palette-results {
  max-height: 400px;
  overflow-y: auto;
}

.palette-group {
  padding: var(--space-2) 0;
}

.palette-group-label {
  padding: var(--space-2) var(--space-6);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.palette-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-6);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.palette-item:hover,
.palette-item.selected {
  background: rgba(6, 182, 212, 0.1);
}

.palette-item .icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

.palette-item .label {
  flex: 1;
  font-size: 0.9rem;
}

.palette-item .shortcut {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .app {
    grid-template-columns: 64px 1fr;
  }
  
  .brand-text,
  .nav-section-label,
  .nav-item span:not(.icon) {
    display: none;
  }
  
  .nav-item {
    justify-content: center;
    padding: var(--space-3);
  }
  
  .nav-item.active::before {
    display: none;
  }
  
  .nav-item.active {
    background: rgba(6, 182, 212, 0.15);
  }
}

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: 60px 1fr 60px 32px;
    grid-template-areas:
      "header"
      "content"
      "sidebar"
      "status";
  }
  
  .sidebar {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    padding: var(--space-2);
  }
  
  .brand,
  .nav-section-label {
    display: none;
  }
  
  .nav-section {
    flex-direction: row;
  }
  
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .split {
    grid-template-columns: 1fr;
  }
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-dim);
  border-radius: 3px;
}

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

/* ==================== UTILITIES ==================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-mono { font-family: var(--font-mono); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.hidden { display: none !important; }

/* ============================================
   CHAT MESSAGE STYLING - VISUAL SEPARATION
   ============================================ */

#chat-messages {
    display: flex !important;
    flex-direction: column !important;
    gap: 16px !important;
    padding: 20px !important;
}

/* USER MESSAGE - RIGHT SIDE, BLUE */
.chat-message-user {
    align-self: flex-end;
    max-width: 75%;
    margin-left: auto;
    margin-bottom: 12px;
}

.chat-message-user .chat-bubble {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: #ffffff;
    padding: 14px 18px;
    border-radius: 18px 18px 4px 18px;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
    position: relative;
    word-wrap: break-word;
}

.chat-message-user .chat-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-message-user .chat-content {
    font-size: 14px;
    line-height: 1.6;
}

.chat-message-user .chat-time {
    font-size: 10px;
    opacity: 0.7;
    margin-top: 6px;
    text-align: right;
}

/* AI MESSAGE - LEFT SIDE, DARK */
.chat-message-ai {
    align-self: flex-start;
    max-width: 80%;
    margin-right: auto;
    margin-bottom: 12px;
}

.chat-message-ai .chat-bubble {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #e2e8f0;
    padding: 14px 18px;
    border-radius: 18px 18px 18px 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(6, 182, 212, 0.15);
    position: relative;
    word-wrap: break-word;
}

.chat-message-ai .chat-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
    color: #06b6d4;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-message-ai .chat-content {
    font-size: 14px;
    line-height: 1.6;
    color: #e2e8f0;
}

.chat-message-ai .chat-time {
    font-size: 10px;
    color: #64748b;
    margin-top: 6px;
    text-align: right;
}

/* AI LOADING */
.chat-message-ai.loading .chat-bubble {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border: 1px dashed rgba(6, 182, 212, 0.4);
}

.chat-message-ai.loading .chat-label {
    color: #06b6d4;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* AI ERROR */
.chat-message-ai.error .chat-bubble {
    background: linear-gradient(135deg, #451a1a 0%, #7f1d1d 100%);
    border: 1px solid #ef4444;
}

.chat-message-ai.error .chat-label {
    color: #ef4444;
}

/* CODE BLOCKS */
.chat-message-ai pre {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 12px;
    margin: 10px 0;
    overflow-x: auto;
}

.chat-message-ai pre code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #e2e8f0;
    line-height: 1.5;
}

.chat-message-ai code {
    background: #0f172a;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #06b6d4;
}

/* SCROLLBAR */
#chat-messages::-webkit-scrollbar {
    width: 6px;
}

#chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

#chat-messages::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 3px;
}

#chat-messages::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* WELCOME MESSAGE */
.chat-welcome {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 14px;
}

/* ============================================
   CHAT VISUAL SEPARATION - FINAL
   ============================================ */

#chat-messages {
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important;
    padding: 20px !important;
}

/* USER MESSAGE - RIGHT, BLUE */
.chat-message-user {
    align-self: flex-end;
    max-width: 75%;
    margin-left: auto;
}

.chat-message-user .chat-bubble {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: #ffffff;
    padding: 12px 16px;
    border-radius: 16px 16px 4px 16px;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

.chat-message-user .chat-sender {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
    opacity: 0.9;
}

.chat-message-user .chat-time {
    font-size: 10px;
    opacity: 0.7;
    margin-left: 8px;
}

.chat-message-user .chat-text {
    font-size: 14px;
    line-height: 1.5;
}

/* TYPO NOTE */
.typo-note {
    font-size: 11px;
    color: #fbbf24;
    margin-bottom: 4px;
    font-style: italic;
}

/* AI MESSAGE - LEFT, DARK */
.chat-message-ai {
    align-self: flex-start;
    max-width: 80%;
    margin-right: auto;
}

.chat-message-ai .chat-bubble {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #e2e8f0;
    padding: 12px 16px;
    border-radius: 16px 16px 16px 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(6, 182, 212, 0.15);
}

.chat-message-ai .chat-sender {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    color: #06b6d4;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-message-ai .chat-badge {
    font-size: 10px;
    padding: 2px 8px;
    background: rgba(6, 182, 212, 0.2);
    color: #06b6d4;
    border-radius: 12px;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.chat-message-ai .chat-time {
    font-size: 10px;
    color: #64748b;
    margin-left: auto;
}

.chat-message-ai .chat-text {
    font-size: 14px;
    line-height: 1.6;
    color: #e2e8f0;
}

.chat-message-ai .chat-meta {
    font-size: 10px;
    color: #64748b;
    margin-top: 8px;
    text-align: right;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 4px;
}

/* AI LOADING */
.chat-message-ai.loading .chat-bubble {
    border: 1px dashed rgba(6, 182, 212, 0.4);
}

/* AI ERROR */
.chat-message-ai.error .chat-bubble {
    background: linear-gradient(135deg, #451a1a 0%, #7f1d1d 100%);
    border: 1px solid #ef4444;
}

.chat-message-ai.error .chat-sender {
    color: #ef4444;
}

/* EXEC BOX */
.chat-message-ai.exec-box {
    margin-top: -8px;
}

.chat-message-ai.exec-box .chat-bubble {
    border: 1px solid #06b6d4;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

/* EXEC RESULT */
.chat-message-ai.exec-result {
    margin-bottom: 12px;
}

.chat-message-ai.exec-result .chat-bubble {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    border: 1px solid #22c55e;
}

/* CODE BLOCKS */
.chat-message-ai pre.code-block {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 12px;
    margin: 8px 0;
    overflow-x: auto;
}

.chat-message-ai pre.code-block code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #e2e8f0;
    line-height: 1.5;
}

.chat-message-ai code {
    background: #0f172a;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #06b6d4;
}

/* BUTTON SMALL */
.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    margin-top: 8px;
}

/* SCROLLBAR */
#chat-messages::-webkit-scrollbar {
    width: 6px;
}

#chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

#chat-messages::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 3px;
}

/* WELCOME */
.chat-welcome {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 14px;
}

/* ============================================
   CHAT MESSAGE STYLING - VISUAL SEPARATION
   ============================================ */

#chat-messages {
    display: flex !important;
    flex-direction: column !important;
    gap: 16px !important;
    padding: 20px !important;
}

/* USER MESSAGE - RIGHT SIDE, BLUE */
.chat-message-user {
    align-self: flex-end;
    max-width: 75%;
    margin-left: auto;
    margin-bottom: 12px;
}

.chat-message-user .chat-bubble {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: #ffffff;
    padding: 14px 18px;
    border-radius: 18px 18px 4px 18px;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
    position: relative;
    word-wrap: break-word;
}

.chat-message-user .chat-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-message-user .chat-content {
    font-size: 14px;
    line-height: 1.6;
}

.chat-message-user .chat-time {
    font-size: 10px;
    opacity: 0.7;
    margin-top: 6px;
    text-align: right;
}

/* AI MESSAGE - LEFT SIDE, DARK */
.chat-message-ai {
    align-self: flex-start;
    max-width: 80%;
    margin-right: auto;
    margin-bottom: 12px;
}

.chat-message-ai .chat-bubble {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #e2e8f0;
    padding: 14px 18px;
    border-radius: 18px 18px 18px 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(6, 182, 212, 0.15);
    position: relative;
    word-wrap: break-word;
}

.chat-message-ai .chat-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
    color: #06b6d4;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-message-ai .chat-content {
    font-size: 14px;
    line-height: 1.6;
    color: #e2e8f0;
}

.chat-message-ai .chat-time {
    font-size: 10px;
    color: #64748b;
    margin-top: 6px;
    text-align: right;
}

/* AI LOADING */
.chat-message-ai.loading .chat-bubble {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border: 1px dashed rgba(6, 182, 212, 0.4);
}

.chat-message-ai.loading .chat-label {
    color: #06b6d4;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* AI ERROR */
.chat-message-ai.error .chat-bubble {
    background: linear-gradient(135deg, #451a1a 0%, #7f1d1d 100%);
    border: 1px solid #ef4444;
}

.chat-message-ai.error .chat-label {
    color: #ef4444;
}

/* CODE BLOCKS */
.chat-message-ai pre {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 12px;
    margin: 10px 0;
    overflow-x: auto;
}

.chat-message-ai pre code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #e2e8f0;
    line-height: 1.5;
}

.chat-message-ai code {
    background: #0f172a;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #06b6d4;
}

/* SCROLLBAR */
#chat-messages::-webkit-scrollbar {
    width: 6px;
}

#chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

#chat-messages::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 3px;
}

#chat-messages::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* WELCOME MESSAGE */
.chat-welcome {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 14px;
}