:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #101522;
  --bg-tertiary: #161c2d;
  --bg-card: rgba(22, 28, 45, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --glow-blue: 0 0 20px rgba(59, 130, 246, 0.25);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* App Header */
.app-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 20;
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 38px;
  height: 38px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--glow-blue);
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(to right, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 0.75rem;
  color: var(--accent-blue);
  font-weight: 600;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Main Container */
.app-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.app-sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1rem 0.75rem;
}

.nav-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.5rem 0.75rem;
  margin-top: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 0.25rem;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
  font-weight: 600;
  border-left: 3px solid var(--accent-blue);
}

.nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  flex-shrink: 0;
}

.btn svg, .quick-chip svg, .status-badge svg {
  vertical-align: middle;
  flex-shrink: 0;
}

/* Main Viewport */
.app-viewport {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  overflow-y: auto;
  position: relative;
}

.view-panel {
  display: none;
  flex: 1;
  padding: 1.5rem;
}

.view-panel.active {
  display: flex;
  flex-direction: column;
}

/* Agent Workspace */
.agent-workspace {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.5rem;
  flex: 1;
  height: 100%;
}

.chat-container {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

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

.chat-header-info h2 {
  font-size: 0.95rem;
  font-weight: 600;
}

.chat-header-info p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.msg {
  display: flex;
  gap: 0.75rem;
  max-width: 85%;
}

.msg-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.msg-agent {
  align-self: flex-start;
}

.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.msg-user .msg-avatar {
  background: var(--accent-purple);
}

.msg-agent .msg-avatar {
  background: var(--accent-gradient);
}

.msg-content {
  background: var(--bg-tertiary);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.msg-user .msg-content {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.3);
}

.msg-content pre {
  background: #0d1117;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: 0.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.msg-content code {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.1);
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
  font-size: 0.8rem;
}

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

.quick-prompts {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  margin-bottom: 0.75rem;
  padding-bottom: 0.25rem;
}

.quick-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.quick-chip:hover {
  background: rgba(59, 130, 246, 0.2);
  color: var(--text-primary);
  border-color: var(--accent-blue);
}

.input-row {
  display: flex;
  gap: 0.5rem;
}

.chat-textarea {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  resize: none;
  min-height: 48px;
  max-height: 120px;
}

.chat-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}

/* Agent Inspector Side Panel */
.agent-side-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--card-shadow);
}

.card-title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title span {
  font-size: 0.75rem;
  color: var(--accent-blue);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: var(--glow-blue);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
}

/* Grid Views */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

/* Stat Cards */
.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.stat-header {
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 0.25rem;
  color: var(--text-primary);
}

/* Code Editor Window */
.code-editor-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
  background: #0d1117;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.editor-header {
  background: #161b22;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.code-textarea {
  width: 100%;
  flex: 1;
  min-height: 380px;
  background: transparent;
  color: #e6edf3;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border: none;
  padding: 1rem;
  resize: vertical;
  line-height: 1.6;
}

.code-textarea:focus {
  outline: none;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

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

/* Dedicated Full-Screen Login Gate */
.login-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.15), transparent 40%),
              radial-gradient(circle at bottom left, rgba(139, 92, 246, 0.15), transparent 40%),
              var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 1.5rem;
}

.login-card {
  background: rgba(16, 21, 34, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  width: 440px;
  max-width: 100%;
  padding: 2.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 30px rgba(59, 130, 246, 0.15);
  backdrop-filter: blur(16px);
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.login-brand-logo {
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: var(--glow-blue);
}

.login-brand-text h1 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
}

.login-brand-text span {
  font-size: 0.8rem;
  color: var(--accent-blue);
  font-weight: 600;
}

.login-error-banner {
  display: none;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.825rem;
  margin-bottom: 1.25rem;
  align-items: center;
  gap: 0.5rem;
}

.login-error-banner.active {
  display: flex;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 440px;
  max-width: 90%;
  padding: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

/* Execution Timeline */
.timeline-item {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-blue);
}

.timeline-item::after {
  content: '';
  position: absolute;
  left: 7px;
  top: 18px;
  bottom: -10px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item:last-child::after {
  display: none;
}

.timeline-title {
  font-size: 0.8rem;
  font-weight: 600;
}

.timeline-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}