/* ============================================
   CORTEX Design System
   AI-Powered Project Assistant
   ============================================ */

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

/* ---- CSS Variables ---- */
:root {
  /* Primary palette */
  --primary: #6C5CE7;
  --primary-light: #A29BFE;
  --primary-dark: #4834D4;
  --primary-glow: rgba(108, 92, 231, 0.3);

  /* Accent */
  --accent: #00D2D3;
  --accent-light: #55EFC4;
  --accent-dark: #01A3A4;

  /* Semantic colors */
  --success: #00B894;
  --warning: #FDCB6E;
  --danger: #FF6B6B;
  --info: #74B9FF;

  /* Dark theme */
  --bg-primary: #0A0A1A;
  --bg-secondary: #12122B;
  --bg-tertiary: #1A1A3E;
  --bg-card: rgba(26, 26, 62, 0.6);
  --bg-glass: rgba(26, 26, 62, 0.4);
  --bg-input: rgba(18, 18, 43, 0.8);

  /* Text */
  --text-primary: #F0F0FF;
  --text-secondary: #9D9DBF;
  --text-muted: #5C5C8A;
  --text-accent: var(--accent);

  /* Borders */
  --border-color: rgba(108, 92, 231, 0.15);
  --border-light: rgba(255, 255, 255, 0.06);
  --border-focus: var(--primary);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--primary-glow);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Sidebar */
  --sidebar-width: 300px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 20%, rgba(108, 92, 231, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 80%, rgba(0, 210, 211, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(108, 92, 231, 0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

a:hover {
  color: var(--accent);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; letter-spacing: -0.03em; }
h2 { font-size: 1.75rem; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }

.text-gradient {
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

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

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border-color: var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: rgba(108, 92, 231, 0.1);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #e74c3c);
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #00a884);
  color: white;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ---- Inputs ---- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--transition-normal);
  outline: none;
}

.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

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

textarea.input {
  resize: vertical;
  min-height: 80px;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.card-body {
  padding: var(--space-lg);
}

/* ---- Glass Panel ---- */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-lg);
  position: relative;
  z-index: 1;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  padding: var(--space-2xl);
  animation: fadeSlideUp 0.6s ease-out;
}

.auth-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.auth-logo .logo-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.8rem;
  box-shadow: var(--shadow-glow);
  animation: pulse-glow 3s infinite;
}

.auth-logo h1 {
  font-size: 1.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.auth-logo p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: var(--space-xs);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.auth-form .btn {
  margin-top: var(--space-sm);
}

.auth-switch {
  text-align: center;
  margin-top: var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-switch a {
  font-weight: 600;
}

.auth-error {
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.3);
  border-radius: var(--radius-md);
  color: var(--danger);
  font-size: 0.85rem;
  display: none;
  animation: shake 0.4s ease-out;
}

.auth-error.show {
  display: block;
}

/* ============================================
   DASHBOARD PAGE
   ============================================ */
.dashboard {
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Top navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-brand .logo-mini {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.navbar-brand span {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-menu:hover {
  border-color: var(--primary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
}

/* Dashboard content */
.dashboard-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-2xl);
}

.dashboard-header {
  margin-bottom: var(--space-2xl);
}

.dashboard-header h2 {
  margin-bottom: var(--space-xs);
}

.dashboard-header p {
  color: var(--text-secondary);
}

/* Projects grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.project-card .card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.project-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.project-info h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.project-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-meta {
  display: flex;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.project-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Add project card */
.project-card-add {
  border: 2px dashed var(--border-color);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.project-card-add:hover {
  border-color: var(--primary);
  background: rgba(108, 92, 231, 0.05);
}

.project-card-add .add-content {
  text-align: center;
  color: var(--text-muted);
}

.project-card-add .add-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  transition: transform var(--transition-normal);
}

.project-card-add:hover .add-icon {
  transform: scale(1.2);
  color: var(--primary);
}

/* ============================================
   CHAT PAGE
   ============================================ */
.chat-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Chat sidebar */
.chat-sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.chat-sidebar.collapsed {
  transform: translateX(-100%);
  width: 0;
  overflow: hidden;
}

.sidebar-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-header .back-btn {
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.sidebar-project {
  flex: 1;
  min-width: 0;
}

.sidebar-project h3 {
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-project p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sidebar-actions {
  padding: var(--space-md);
}

.sidebar-actions .btn {
  width: 100%;
}

/* Conversation list */
.conversation-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-sm);
}

.conversation-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}

.conversation-item:hover {
  background: var(--bg-tertiary);
}

.conversation-item.active {
  background: rgba(108, 92, 231, 0.15);
  border: 1px solid rgba(108, 92, 231, 0.3);
}

.conversation-item .conv-icon {
  font-size: 1rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.conversation-item .conv-info {
  flex: 1;
  min-width: 0;
}

.conversation-item .conv-title {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conversation-item .conv-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.conversation-item .conv-delete {
  opacity: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.conversation-item:hover .conv-delete {
  opacity: 1;
}

.conversation-item .conv-delete:hover {
  color: var(--danger);
  background: rgba(255, 107, 107, 0.1);
}

/* Chat main area */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Chat header */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
}

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

.toggle-sidebar-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: var(--space-xs);
}

.chat-title {
  font-size: 1rem;
  font-weight: 600;
}

.chat-status {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background var(--transition-fast);
}

.status-dot.connected {
  background: var(--success);
  box-shadow: 0 0 8px rgba(0, 184, 148, 0.5);
}

.status-dot.streaming {
  background: var(--accent);
  animation: pulse 1.5s infinite;
}

/* Chat messages area */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Empty state */
.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
}

.chat-empty .empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
  opacity: 0.3;
}

.chat-empty h3 {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.chat-empty p {
  max-width: 400px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  justify-content: center;
}

.quick-action {
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.quick-action:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(108, 92, 231, 0.1);
}

/* Message bubbles */
.message {
  display: flex;
  gap: var(--space-md);
  max-width: 85%;
  animation: fadeSlideUp 0.3s ease-out;
}

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

.message.assistant {
  align-self: flex-start;
}

.message.system {
  align-self: center;
  max-width: 70%;
}

.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.message.user .message-avatar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.message.assistant .message-avatar {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
}

.message-content {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  font-size: 0.93rem;
  line-height: 1.7;
  position: relative;
}

.message.user .message-content {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-bottom-right-radius: var(--radius-sm);
}

.message.assistant .message-content {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: var(--radius-sm);
}

.message.system .message-content {
  background: rgba(253, 203, 110, 0.1);
  border: 1px solid rgba(253, 203, 110, 0.3);
  color: var(--warning);
  text-align: center;
  font-size: 0.85rem;
}

.message-content pre {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin: var(--space-sm) 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.message-content code {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

.message-content pre code {
  background: transparent;
  padding: 0;
}

.message-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  text-align: right;
}

.message.user .message-time {
  text-align: left;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  color: var(--text-muted);
  font-size: 0.85rem;
  animation: fadeIn 0.3s ease;
}

.typing-dots {
  display: flex;
  gap: 4px;
}

.typing-dots span {
  width: 6px;
  height: 6px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

/* Chat input area */
.chat-input-area {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-light);
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: var(--space-sm);
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-sm);
  transition: border-color var(--transition-fast);
}

.chat-input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.chat-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: var(--space-sm) var(--space-md);
  resize: none;
  outline: none;
  min-height: 24px;
  max-height: 200px;
  line-height: 1.5;
}

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

.send-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.send-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ============================================
   PERMISSION MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 500px;
  width: 90%;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
}

.modal-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.modal-icon.warning {
  background: rgba(253, 203, 110, 0.15);
  color: var(--warning);
}

.modal h3 {
  margin-bottom: var(--space-sm);
}

.modal p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
}

.modal-command {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
}

.modal-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
}

/* Add Project Modal */
.add-project-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: slideInRight 0.3s ease-out;
  max-width: 400px;
  box-shadow: var(--shadow-md);
}

.toast.success {
  background: rgba(0, 184, 148, 0.15);
  border-color: rgba(0, 184, 148, 0.3);
  color: var(--success);
}

.toast.error {
  background: rgba(255, 107, 107, 0.15);
  border-color: rgba(255, 107, 107, 0.3);
  color: var(--danger);
}

.toast.info {
  background: rgba(116, 185, 255, 0.15);
  border-color: rgba(116, 185, 255, 0.3);
  color: var(--info);
}

/* ============================================
   LOADING
   ============================================ */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 26, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  flex-direction: column;
  gap: var(--space-md);
}

.loading-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px var(--primary-glow); }
  50% { box-shadow: 0 0 40px var(--primary-glow), 0 0 60px rgba(0, 210, 211, 0.1); }
}

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

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 260px;
  }

  .chat-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 200;
    transform: translateX(-100%);
  }

  .chat-sidebar.open {
    transform: translateX(0);
  }

  .toggle-sidebar-btn {
    display: block;
  }

  .dashboard-content {
    padding: var(--space-lg);
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .message {
    max-width: 95%;
  }

  .auth-card {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }

  .chat-input-area {
    padding: var(--space-sm);
  }

  .navbar {
    padding: var(--space-sm) var(--space-md);
  }
}