/* ============================================
   QualeQuest Cloud Office - Professional Design System
   Big 4 Consulting Aesthetic
   ============================================ */

:root {
  /* Sophisticated Color Palette */
  --primary-purple: #667eea;
  --primary-deep: #764ba2;
  --accent-pink: #f093fb;
  --accent-coral: #f5576c;
  
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #fafafa;
  --bg-tertiary: #f5f5f5;
  --bg-elevated: #ffffff;
  
  /* Text */
  --text-primary: #171717;
  --text-secondary: #525252;
  --text-tertiary: #a3a3a3;
  --text-inverse: #ffffff;
  
  /* Borders */
  --border-light: #f5f5f5;
  --border-default: #e5e5e5;
  --border-strong: #d4d4d4;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   Base Styles
   ============================================ */

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hidden {
  display: none !important;
}

.screen {
  min-height: 100vh;
}

/* ============================================
   Login Screen - Elevated Design
   ============================================ */

#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-background {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.login-blur-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s infinite ease-in-out;
}

.circle-1 {
  width: 400px;
  height: 400px;
  background: rgba(240, 147, 251, 0.5);
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.circle-2 {
  width: 500px;
  height: 500px;
  background: rgba(245, 87, 108, 0.4);
  bottom: -15%;
  right: -15%;
  animation-delay: 5s;
}

.circle-3 {
  width: 300px;
  height: 300px;
  background: rgba(102, 126, 234, 0.5);
  top: 50%;
  right: 20%;
  animation-delay: 10s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.9); }
  75% { transform: translate(20px, 30px) scale(1.05); }
}

.login-container {
  position: relative;
  z-index: 1;
  background: var(--bg-elevated);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 440px;
  backdrop-filter: blur(10px);
  animation: slideUp 0.6s var(--transition-spring);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-logo {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.logo-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--spacing-md);
  animation: logoSpin 20s linear infinite;
}

@keyframes logoSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.login-logo h1 {
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.form-group input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-family: inherit;
  transition: all var(--transition-base);
  background: var(--bg-primary);
}

.form-group input:hover {
  border-color: var(--border-strong);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
  color: var(--text-tertiary);
}

/* Buttons */
.btn-primary {
  position: relative;
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover::before {
  opacity: 1;
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-text {
  transition: opacity var(--transition-base);
}

.btn-loader {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.spinner {
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
}

.spinner circle {
  stroke: currentColor;
  stroke-dasharray: 50;
  stroke-dashoffset: 25;
}

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

.error-message {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: var(--spacing-md);
  text-align: center;
  font-weight: 500;
  animation: shake 0.4s;
}

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

/* ============================================
   App Layout
   ============================================ */

#app-screen {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ============================================
   Sidebar - Professional Navigation
   ============================================ */

.sidebar {
  width: 300px;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-mark-small {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 1.125rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.user-role-badge {
  font-size: 0.6875rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  color: var(--text-inverse);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Agent Section */
.agent-section, .conversations-section {
  padding: var(--spacing-lg);
}

.agent-section h3, .conversations-section h3 {
  font-size: 0.6875rem;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  letter-spacing: 0.05em;
}

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

.btn-icon-new {
  width: 32px;
  height: 32px;
  border: none;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  color: var(--text-inverse);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.btn-icon-new svg {
  width: 16px;
  height: 16px;
}

.btn-icon-new:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.agent-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.agent-item {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  background: var(--bg-secondary);
}

.agent-item:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-default);
  transform: translateX(4px);
}

.agent-item.active {
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  color: var(--text-inverse);
  border-color: var(--primary-purple);
  box-shadow: var(--shadow-glow);
}

.agent-item .agent-name {
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xs);
}

.agent-item .agent-desc {
  font-size: 0.75rem;
  opacity: 0.8;
  line-height: 1.4;
}

/* Conversations Section */
.conversations-section {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.conversation-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.conversation-list::-webkit-scrollbar {
  width: 6px;
}

.conversation-list::-webkit-scrollbar-track {
  background: transparent;
}

.conversation-list::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
}

.conversation-item {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border-left: 3px solid transparent;
}

.conversation-item:hover {
  background: var(--bg-tertiary);
  border-left-color: var(--primary-purple);
}

.conversation-item.active {
  background: var(--bg-tertiary);
  border-left-color: var(--primary-purple);
  box-shadow: var(--shadow-sm);
}

.conversation-item .conv-title {
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: var(--spacing-xs);
}

.conversation-item .conv-preview {
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Sidebar Footer */
.sidebar-footer {
  margin-top: auto;
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-light);
  background: var(--bg-secondary);
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-name-text {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: var(--spacing-xs);
}

.btn-logout {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0;
  transition: color var(--transition-base);
}

.btn-logout svg {
  width: 14px;
  height: 14px;
}

.btn-logout:hover {
  color: var(--error);
}

/* ============================================
   Main Content Area
   ============================================ */

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-secondary);
}

.view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ============================================
   Dashboard View
   ============================================ */

#dashboard-view {
  overflow-y: auto;
  padding: var(--spacing-2xl);
}

#dashboard-view::-webkit-scrollbar {
  width: 8px;
}

#dashboard-view::-webkit-scrollbar-track {
  background: transparent;
}

#dashboard-view::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2xl);
  animation: fadeIn 0.6s var(--transition-smooth);
}

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

.dashboard-welcome h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.dashboard-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

.dashboard-date {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Stats Cards */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.stat-card {
  background: var(--bg-elevated);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
  animation: fadeIn 0.6s var(--transition-smooth);
  animation-delay: 0.1s;
  animation-fill-mode: both;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
  stroke: white;
}

.stat-content {
  flex: 1;
}

.stat-content h4 {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.stat-value {
  font-size: 2.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* Quick Actions */
.quick-actions, .recent-activity {
  margin-bottom: var(--spacing-2xl);
  animation: fadeIn 0.6s var(--transition-smooth);
  animation-delay: 0.2s;
  animation-fill-mode: both;
}

.quick-actions h3, .recent-activity h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.dashboard-agent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.dashboard-agent-card {
  background: var(--bg-elevated);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.dashboard-agent-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  transform: scaleX(0);
  transition: transform var(--transition-smooth);
}

.dashboard-agent-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-purple);
}

.dashboard-agent-card:hover::before {
  transform: scaleX(1);
}

.dashboard-agent-card h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.dashboard-agent-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Recent Activity */
.recent-list {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--border-light);
}

.recent-item {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: all var(--transition-base);
}

.recent-item:last-child {
  border-bottom: none;
}

.recent-item:hover {
  background: var(--bg-tertiary);
  padding-left: calc(var(--spacing-lg) + 8px);
}

.recent-item .recent-title {
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-xs);
}

.recent-item .recent-meta {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ============================================
   Chat View - Slack/Discord Quality
   ============================================ */

.chat-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-light);
  gap: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  z-index: 5;
}

.btn-back {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  color: var(--text-primary);
}

.btn-back svg {
  width: 20px;
  height: 20px;
}

.btn-back:hover {
  background: var(--bg-tertiary);
  transform: translateX(-2px);
}

.chat-agent-info {
  flex: 1;
  min-width: 0;
}

.chat-agent-info h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.agent-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.chat-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-icon-action {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  color: var(--text-secondary);
}

.btn-icon-action svg {
  width: 20px;
  height: 20px;
}

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

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

.chat-messages::-webkit-scrollbar {
  width: 8px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
}

.chat-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl);
  margin: auto;
  max-width: 400px;
}

.welcome-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.welcome-icon svg {
  width: 32px;
  height: 32px;
  stroke: white;
}

.chat-welcome h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.chat-welcome p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Message Bubbles */
.message {
  max-width: 70%;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  line-height: 1.6;
  font-size: 0.9375rem;
  animation: messageSlide 0.3s var(--transition-smooth);
}

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

.message.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  color: var(--text-inverse);
  border-bottom-right-radius: var(--spacing-xs);
  box-shadow: var(--shadow-md);
}

.message.assistant {
  align-self: flex-start;
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-bottom-left-radius: var(--spacing-xs);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.message.assistant .escalation-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-coral) 100%);
  color: var(--text-inverse);
  font-size: 0.75rem;
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-sm);
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  gap: 6px;
  padding: var(--spacing-md) var(--spacing-lg);
  align-self: flex-start;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: var(--spacing-xs);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: var(--text-tertiary);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

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

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-8px); opacity: 1; }
}

/* Chat Input */
.chat-input-container {
  border-top: 1px solid var(--border-light);
  background: var(--bg-elevated);
  padding: var(--spacing-lg) var(--spacing-xl);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.chat-input-area {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-md);
  background: var(--bg-secondary);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.chat-input-area:focus-within {
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.chat-input-area textarea {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 0.9375rem;
  font-family: inherit;
  resize: none;
  min-height: 24px;
  max-height: 120px;
  line-height: 1.5;
  color: var(--text-primary);
}

.chat-input-area textarea:focus {
  outline: none;
}

.chat-input-area textarea::placeholder {
  color: var(--text-tertiary);
}

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

.char-count {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.btn-send {
  width: 40px;
  height: 40px;
  border: none;
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-deep) 100%);
  color: var(--text-inverse);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn-send:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-send svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   MOBILE-FIRST Responsive Design
   ============================================ */

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  flex-shrink: 0;
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

/* Mobile Header */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.mobile-header .sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Mobile Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.active {
  opacity: 1;
}

/* ===== TABLET (1024px and below) ===== */
@media (max-width: 1024px) {
  .sidebar {
    width: 280px;
  }
  
  .dashboard-agent-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

/* ===== MOBILE (768px and below) ===== */
@media (max-width: 768px) {
  /* Show mobile header */
  .mobile-header {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  /* Sidebar becomes slide-out drawer */
  #app-screen {
    flex-direction: column;
    position: relative;
  }
  
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 85%;
    max-width: 320px;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform var(--transition-smooth);
    border-right: 1px solid var(--border-light);
    overflow-y: auto;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .sidebar-overlay {
    display: block;
    pointer-events: none;
  }
  
  .sidebar-overlay.active {
    pointer-events: auto;
  }
  
  /* Main content takes full width */
  .main-content {
    width: 100%;
    height: 100vh;
  }
  
  /* Dashboard adjustments */
  #dashboard-view {
    padding: var(--spacing-md);
    padding-top: 0;
  }
  
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
  }
  
  .dashboard-welcome h1 {
    font-size: 1.5rem;
  }
  
  .dashboard-subtitle {
    font-size: 0.875rem;
  }
  
  .dashboard-date {
    font-size: 0.75rem;
  }
  
  .dashboard-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
  }
  
  .stat-card {
    padding: var(--spacing-lg);
  }
  
  .stat-icon {
    width: 44px;
    height: 44px;
  }
  
  .stat-value {
    font-size: 1.75rem;
  }
  
  .quick-actions, .recent-activity {
    margin-bottom: var(--spacing-lg);
  }
  
  .quick-actions h3, .recent-activity h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
  }
  
  .dashboard-agent-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .dashboard-agent-card {
    padding: var(--spacing-lg);
    min-height: 44px;
  }
  
  .dashboard-agent-card h4 {
    font-size: 1rem;
  }
  
  .recent-item {
    padding: var(--spacing-md);
    min-height: 44px;
  }
  
  /* Chat view full screen on mobile */
  #chat-view {
    position: fixed;
    inset: 0;
    z-index: 50;
    background: var(--bg-secondary);
  }
  
  .chat-header {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .btn-back {
    width: 44px;
    height: 44px;
  }
  
  .chat-agent-info h2 {
    font-size: 1rem;
  }
  
  .agent-description {
    font-size: 0.75rem;
    display: none;
  }
  
  .chat-actions {
    display: none;
  }
  
  .chat-messages {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .message {
    max-width: 85%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
  }
  
  .chat-input-container {
    padding: var(--spacing-sm) var(--spacing-md);
    padding-bottom: max(var(--spacing-sm), env(safe-area-inset-bottom));
  }
  
  .chat-input-area {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }
  
  .chat-input-area textarea {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
  
  .char-count {
    display: none;
  }
  
  .btn-send {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
  }
}

/* ===== SMALL MOBILE (480px and below - iPhone SE, small Android) ===== */
@media (max-width: 480px) {
  /* Login screen mobile optimization */
  #login-screen {
    padding: var(--spacing-md);
  }
  
  .login-container {
    padding: var(--spacing-lg);
    margin: 0;
    border-radius: var(--radius-lg);
    max-width: 100%;
  }
  
  .login-logo {
    margin-bottom: var(--spacing-lg);
  }
  
  .logo-mark {
    width: 48px;
    height: 48px;
  }
  
  .login-logo h1 {
    font-size: 1.5rem;
  }
  
  .login-logo p {
    font-size: 0.8125rem;
  }
  
  .form-group {
    margin-bottom: var(--spacing-md);
  }
  
  .form-group label {
    font-size: 0.8125rem;
  }
  
  .form-group input {
    padding: 0.875rem 1rem;
    font-size: 16px; /* Prevents iOS zoom */
    min-height: 48px;
  }
  
  .btn-primary {
    padding: 1rem 1.5rem;
    font-size: 1rem;
    min-height: 48px;
  }
  
  /* Mobile header compact */
  .mobile-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .logo-mark-small {
    width: 28px;
    height: 28px;
  }
  
  .sidebar-title {
    font-size: 1rem;
  }
  
  /* Dashboard compact */
  .dashboard-welcome h1 {
    font-size: 1.25rem;
  }
  
  .stat-card {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .stat-icon {
    width: 40px;
    height: 40px;
  }
  
  .stat-icon svg {
    width: 20px;
    height: 20px;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .stat-content h4 {
    font-size: 0.75rem;
  }
  
  .dashboard-agent-card {
    padding: var(--spacing-md);
  }
  
  .dashboard-agent-card h4 {
    font-size: 0.9375rem;
  }
  
  .dashboard-agent-card p {
    font-size: 0.8125rem;
  }
  
  /* Chat even more compact */
  .chat-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .chat-agent-info h2 {
    font-size: 0.9375rem;
  }
  
  .chat-messages {
    padding: var(--spacing-sm);
  }
  
  .message {
    max-width: 90%;
    font-size: 0.875rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .welcome-icon {
    width: 56px;
    height: 56px;
  }
  
  .welcome-icon svg {
    width: 28px;
    height: 28px;
  }
  
  .chat-welcome h3 {
    font-size: 1.125rem;
  }
  
  .chat-welcome p {
    font-size: 0.875rem;
  }
}

/* ===== EXTRA SMALL (360px - smallest common Android) ===== */
@media (max-width: 375px) {
  .login-container {
    padding: var(--spacing-md);
  }
  
  .login-logo h1 {
    font-size: 1.375rem;
  }
  
  .dashboard-welcome h1 {
    font-size: 1.125rem;
  }
  
  .stat-value {
    font-size: 1.375rem;
  }
}

/* ===== iOS Safe Area Support ===== */
@supports (padding: max(0px)) {
  .chat-input-container {
    padding-bottom: max(var(--spacing-sm), env(safe-area-inset-bottom));
  }
  
  .sidebar {
    padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
  }
}

/* ===== Touch-friendly minimum sizes ===== */
@media (pointer: coarse) {
  .agent-item,
  .conversation-item,
  .recent-item,
  .dashboard-agent-card {
    min-height: 44px;
  }
  
  .btn-back,
  .btn-send,
  .btn-icon-new,
  .btn-icon-action,
  .mobile-menu-btn {
    min-width: 44px;
    min-height: 44px;
  }
}

/* ============================================
   Accessibility & Performance
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard navigation */
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-purple);
  outline-offset: 2px;
}

/* ============================================
   Navigation
   ============================================ */
.sidebar-nav {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: 1.5rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

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

.nav-link.active {
  background: linear-gradient(135deg, var(--primary-purple), var(--primary-deep));
  color: var(--text-inverse);
}

.nav-link svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ============================================
   Documents View
   ============================================ */
.documents-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  padding: 1.5rem;
}

.document-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.document-card-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.document-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.document-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke: white;
}

.document-info {
  flex: 1;
  min-width: 0;
}

.document-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.25rem 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.document-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.document-type {
  padding: 0.25rem 0.5rem;
  background: var(--bg-tertiary);
  border-radius: 4px;
  font-weight: 500;
  text-transform: capitalize;
}

.document-date {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
}

.empty-state-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  opacity: 0.3;
}

.empty-state-icon svg {
  width: 100%;
  height: 100%;
  stroke: var(--text-tertiary);
}

.empty-state h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.5rem 0;
}

.empty-state p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ============================================
   Modals
   ============================================ */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-elevated);
  border-radius: 16px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
}

.document-modal-content {
  max-width: 900px;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-default);
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

.modal-actions {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  gap: 0.75rem;
}

.document-content {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

/* Markdown Content Styling */
.markdown-content {
  line-height: 1.7;
  color: var(--text-primary);
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
  margin: 1.5rem 0 1rem 0;
  font-weight: 600;
}

.markdown-content h1 {
  font-size: 2rem;
  border-bottom: 2px solid var(--border-default);
  padding-bottom: 0.5rem;
}

.markdown-content h2 {
  font-size: 1.5rem;
}

.markdown-content h3 {
  font-size: 1.25rem;
}

.markdown-content p {
  margin: 0.75rem 0;
}

.markdown-content ul,
.markdown-content ol {
  margin: 0.75rem 0;
  padding-left: 1.5rem;
}

.markdown-content li {
  margin: 0.5rem 0;
}

.markdown-content code {
  background: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-family: 'Courier New', monospace;
}

.markdown-content pre {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
}

.markdown-content blockquote {
  border-left: 4px solid var(--primary-purple);
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--text-secondary);
}

/* ============================================
   Analysis Sidebar
   ============================================ */
.analysis-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 400px;
  height: 100vh;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border-default);
  box-shadow: var(--shadow-xl);
  z-index: 100;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.analysis-sidebar:not(.hidden) {
  transform: translateX(0);
}

.analysis-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.analysis-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.analysis-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.analysis-section {
  margin-bottom: 2rem;
}

.analysis-section h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.75rem 0;
}

.analysis-section p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0;
}

.analysis-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.analysis-section li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--text-primary);
}

.analysis-section li::before {
  content: "•";
  position: absolute;
  left: 0.5rem;
  color: var(--primary-purple);
  font-weight: bold;
}

/* ============================================
   Form Controls
   ============================================ */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-default);
  border-radius: 8px;
  font-size: 0.9375rem;
  font-family: inherit;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-purple);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

select.form-control {
  cursor: pointer;
}

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 768px) {
  .documents-list {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .analysis-sidebar {
    width: 100%;
  }

  .modal-content {
    max-width: 100%;
    border-radius: 16px 16px 0 0;
  }

  .document-modal-content {
    max-width: 100%;
  }
}