/* ===== CSS Variables & Theme Management ===== */
:root {
  /* Colors - Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fb;
  --bg-tertiary: #f0f2f5;
  --bg-card: #ffffff;
  --bg-hover: #f5f6f8;
  
  --text-primary: #1a1d1f;
  --text-secondary: #6f7780;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;
  
  --border-color: #e5e7eb;
  --border-light: #f0f2f5;
  --divider: #e9ecef;
  
  --accent-primary: #4f46e5;
  --accent-primary-hover: #4338ca;
  --accent-primary-light: #eef2ff;
  
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --info: #3b82f6;
  --info-light: #dbeafe;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  
  /* 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;
  
  /* Layout */
  --sidebar-width: 260px;
  --topbar-height: 64px;
  
  /* 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: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f1419;
  --bg-secondary: #16181d;
  --bg-tertiary: #1e2127;
  --bg-card: #16181d;
  --bg-hover: #1e2127;
  
  --text-primary: #e7e9ea;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;
  --text-inverse: #1a1d1f;
  
  --border-color: #2a2d35;
  --border-light: #23252b;
  --divider: #2a2d35;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #818cf8;
  --accent-primary-light: #1e1b4b;
  
  --success: #10b981;
  --success-light: #064e3b;
  --warning: #f59e0b;
  --warning-light: #451a03;
  --danger: #ef4444;
  --danger-light: #450a0a;
  --info: #3b82f6;
  --info-light: #1e3a8a;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
}

/* ===== Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ===== Sidebar Navigation ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--bg-card);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal);
  z-index: 100;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-height);
}

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

.logo svg {
  width: 28px;
  height: 28px;
  color: var(--accent-primary);
}

.logo-text {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.close-sidebar {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.close-sidebar:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.close-sidebar svg {
  width: 20px;
  height: 20px;
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-size: 0.9375rem;
  font-weight: 500;
}

.nav-item svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

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

.nav-item.active {
  background-color: var(--accent-primary-light);
  color: var(--accent-primary);
}

.sidebar-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* ===== Main Content ===== */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-normal);
}

/* ===== Top Bar ===== */
.topbar {
  height: var(--topbar-height);
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: 50;
}

.burger-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.burger-menu span {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.burger-menu:hover span {
  background-color: var(--accent-primary);
}

.topbar-center {
  flex: 1;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.icon-button {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

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

.icon-button .badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background-color: var(--danger);
  color: white;
  font-size: 0.625rem;
  font-weight: 600;
  padding: 2px 5px;
  border-radius: 10px;
  min-width: 16px;
  text-align: center;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  width: 40px;
  height: 40px;
}

.theme-toggle:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.theme-toggle .sun-icon {
  opacity: 1;
}

.theme-toggle .moon-icon {
  opacity: 0;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

[data-theme="dark"] .theme-toggle .moon-icon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg);
}

/* ===== Content Wrapper ===== */
.content-wrapper {
  flex: 1;
  padding: var(--spacing-xl);
}

.view {
  display: none;
}

.view.active {
  display: block;
  animation: fadeIn var(--transition-normal);
}

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

/* ===== Stats Grid ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-lg);
  transition: all var(--transition-fast);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-light);
}

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

.stat-icon.primary {
  background-color: var(--accent-primary-light);
  color: var(--accent-primary);
}

.stat-icon.success {
  background-color: var(--success-light);
  color: var(--success);
}

.stat-icon.warning {
  background-color: var(--warning-light);
  color: var(--warning);
}

.stat-icon.danger {
  background-color: var(--danger-light);
  color: var(--danger);
}

.stat-icon.info {
  background-color: var(--info-light);
  color: var(--info);
}

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

.stat-content {
  flex: 1;
}

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

.stat-value {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-xs);
}

.stat-change {
  font-size: 0.8125rem;
  font-weight: 500;
}

.stat-change.positive {
  color: var(--success);
}

.stat-change.negative {
  color: var(--danger);
}

.stat-change.neutral {
  color: var(--text-tertiary);
}

/* ===== Sections ===== */
.section {
  margin-bottom: var(--spacing-2xl);
}

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.section-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ===== Component Groups ===== */
.component-group {
  margin-bottom: var(--spacing-2xl);
}

.component-group h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

/* ===== Buttons ===== */
.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.btn {
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-primary {
  background-color: var(--accent-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  box-shadow: var(--shadow-md);
}

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

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

.btn-success {
  background-color: var(--success);
  color: white;
}

.btn-success:hover {
  opacity: 0.9;
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background-color: var(--danger);
  color: white;
}

.btn-danger:hover {
  opacity: 0.9;
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--accent-primary);
  border: 1.5px solid var(--accent-primary);
}

.btn-outline:hover {
  background-color: var(--accent-primary-light);
}

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

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

/* ===== Toggles ===== */
.toggle-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  user-select: none;
}

.toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--bg-tertiary);
  border-radius: 12px;
  transition: background-color var(--transition-fast);
  border: 1.5px solid var(--border-color);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  top: 50%;
  transform: translateY(-50%);
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle input[type="checkbox"]:checked + .toggle-slider {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle input[type="checkbox"]:checked + .toggle-slider::before {
  transform: translate(20px, -50%);
}

.toggle-label {
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

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

.card-header h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.icon-button-small {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.icon-button-small svg {
  width: 16px;
  height: 16px;
}

/* Activity Items */
.activity-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-light);
}

.activity-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.activity-item:first-child {
  padding-top: 0;
}

.activity-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.activity-icon svg {
  width: 18px;
  height: 18px;
}

/* Activity status colors */
.activity-icon.status-accepted {
  background-color: var(--success-light);
  color: var(--success);
}

.activity-icon.status-discarded {
  background-color: var(--danger-light);
  color: var(--danger);
}

.activity-icon.status-dry-run {
  background-color: var(--info-light);
  color: var(--info);
}

.activity-icon.status-modified-minor {
  background-color: var(--info-light);
  color: var(--info);
}

.activity-icon.status-modified-major {
  background-color: var(--warning-light);
  color: var(--warning);
}

.activity-icon.status-default {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.activity-content {
  flex: 1;
}

.activity-title {
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 2px;
}

.activity-time {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* Status Items */
.status-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-light);
}

.status-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.status-item:first-child {
  padding-top: 0;
}

.status-label {
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
}

.status-indicator {
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
}

.status-indicator.active {
  background-color: var(--success-light);
  color: var(--success);
}

/* Action Buttons */
.action-button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: var(--spacing-sm);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
}

.action-button:last-child {
  margin-bottom: 0;
}

.action-button:hover {
  background-color: var(--bg-hover);
  border-color: var(--accent-primary);
}

.action-button svg {
  width: 18px;
  height: 18px;
  color: var(--text-secondary);
}

/* ===== Form Elements ===== */
.form-demo {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group:last-child {
  margin-bottom: 0;
}

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

.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

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

/* ===== Tags & Badges ===== */
.tags-demo {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-md);
}

.tag-primary {
  background-color: var(--accent-primary-light);
  color: var(--accent-primary);
}

.tag-success {
  background-color: var(--success-light);
  color: var(--success);
}

.tag-warning {
  background-color: var(--warning-light);
  color: var(--warning);
}

.tag-danger {
  background-color: var(--danger-light);
  color: var(--danger);
}

.tag-info {
  background-color: var(--info-light);
  color: var(--info);
}

.tag-neutral {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge-success {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background-color: var(--success-light);
  color: var(--success);
}

/* ===== Settings Page ===== */
.settings-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.form-help {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

.settings-note {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--info-light);
  border: 1px solid var(--info);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-lg);
}

.settings-note svg {
  width: 20px;
  height: 20px;
  color: var(--info);
  flex-shrink: 0;
  margin-top: 2px;
}

.settings-note span {
  font-size: 0.875rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.settings-note code {
  background-color: var(--bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.8125rem;
}

.settings-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn-large {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

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

/* Server Status */
.server-status-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.server-status-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg) 0;
}

.status-indicator-large {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.125rem;
  font-weight: 600;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--text-tertiary);
  animation: pulse 2s infinite;
}

.status-indicator-large.online .status-dot {
  background-color: var(--success);
}

.status-indicator-large.offline .status-dot {
  background-color: var(--danger);
  animation: none;
}

.status-indicator-large.checking .status-dot {
  background-color: var(--warning);
}

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

.server-controls {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Ticket Cards ===== */
.ticket-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.ticket-card:hover {
  box-shadow: var(--shadow-md);
}

.ticket-card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.ticket-card-header:hover {
  background-color: var(--bg-hover);
}

.ticket-info {
  flex: 1;
}

.ticket-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.ticket-meta {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.ticket-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.ticket-expand-icon {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: transform var(--transition-fast);
}

.ticket-card.expanded .ticket-expand-icon {
  transform: rotate(180deg);
}

.ticket-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.ticket-card.expanded .ticket-card-body {
  max-height: 5000px;
}

.ticket-card-content {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-light);
}

.content-section {
  margin-bottom: var(--spacing-xl);
}

.content-section:last-child {
  margin-bottom: 0;
}

.content-section-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.content-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-primary);
  max-height: 400px;
  overflow-y: auto;
}

.content-box p {
  margin-bottom: var(--spacing-md);
}

.content-box p:last-child {
  margin-bottom: 0;
}

.content-box ol, .content-box ul {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
}

.content-box li {
  margin-bottom: var(--spacing-sm);
}

.content-box a {
  color: var(--accent-primary);
  text-decoration: none;
}

.content-box a:hover {
  text-decoration: underline;
}

.content-box strong {
  font-weight: 600;
  color: var(--text-primary);
}

.ticket-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .ticket-comparison {
    grid-template-columns: 1fr;
  }
}

.comparison-side {
  min-width: 0;
}

.ticket-stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--bg-tertiary);
}

.ticket-stat {
  text-align: center;
}

.ticket-stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.ticket-stat-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Diff View Styles */
.diff-content {
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.8;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.diff-content span {
  display: inline;
  border-radius: 2px;
}

.ticket-diff-view {
  margin-top: var(--spacing-md);
}

.comparison-view-toggle {
  display: flex;
  justify-content: flex-end;
}

/* ===== Utilities ===== */
.text-muted {
  color: var(--text-secondary);
}

/* ===== Overlay ===== */
.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 90;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.overlay.active {
  display: block;
  opacity: 1;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .close-sidebar {
    display: block;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .burger-menu {
    display: flex;
  }
  
  .topbar {
    padding: 0 var(--spacing-md);
  }
  
  .page-title {
    font-size: 1.25rem;
  }
  
  .content-wrapper {
    padding: var(--spacing-md);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .button-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}
  
/* ===== Knowledge Base View ===== */
.kb-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

/* KB Grid - 4 columns */
.kb-entries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 1400px) {
  .kb-entries-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .kb-entries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .kb-entries-grid {
    grid-template-columns: 1fr;
  }
}

.kb-tabs {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.kb-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.625rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: transparent;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  white-space: nowrap;
}

.kb-tab:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.kb-tab.active {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.kb-tab.active .kb-tab-count {
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
}

.kb-tab-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 var(--spacing-xs);
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.kb-search {
  flex: 1;
  min-width: 250px;
  max-width: 400px;
  position: relative;
}

.kb-search input {
  width: 100%;
  padding: 0.625rem 0.875rem 0.625rem 2.5rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.kb-search input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.kb-search input::placeholder {
  color: var(--text-tertiary);
}

.kb-search svg {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-tertiary);
  pointer-events: none;
}

.kb-pagination-info {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

.kb-entry-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

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

.kb-entry-title-group {
  flex: 1;
  min-width: 0;
}

.kb-entry-id {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.kb-entry-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  word-wrap: break-word;
}

.kb-entry-preview {
  padding: var(--spacing-lg);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  max-height: 100px;
  overflow: hidden;
  position: relative;
}

.kb-entry-preview::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--bg-card));
  pointer-events: none;
}

.kb-entry-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  background-color: var(--bg-secondary);
}

.kb-entry-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.kb-entry-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.kb-entry-meta-item svg {
  width: 14px;
  height: 14px;
}

.kb-entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.kb-entry-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  background-color: var(--accent-primary-light);
  color: var(--accent-primary);
  border-radius: var(--radius-sm);
}

.kb-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--spacing-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.pagination-btn:hover:not(:disabled) {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.pagination-btn.active {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

/* KB Empty State */
.kb-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  text-align: center;
  background-color: var(--bg-card);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-lg);
}

.kb-empty-state svg {
  width: 64px;
  height: 64px;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-lg);
}

.kb-empty-state h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.kb-empty-state p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 400px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  animation: fadeIn var(--transition-normal);
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  animation: slideUp var(--transition-normal);
}

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

.modal-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  margin: 0;
}

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

.modal-body {
  padding: var(--spacing-xl);
  overflow-y: auto;
  flex: 1;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.modal-body p {
  margin-bottom: var(--spacing-md);
}

.modal-body strong {
  font-weight: 600;
  color: var(--text-primary);
}

.modal-body a {
  color: var(--accent-primary);
  text-decoration: none;
}

.modal-body a:hover {
  text-decoration: underline;
}

.modal-body ul, .modal-body ol {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
}

.modal-body li {
  margin-bottom: var(--spacing-sm);
}

.modal-body code {
  background-color: var(--bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.875rem;
}

.modal-body pre {
  background-color: var(--bg-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

/* Responsive adjustments for KB */
@media (max-width: 768px) {
  .kb-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .kb-search {
    max-width: 100%;
  }
  
  .kb-tabs {
    width: 100%;
    justify-content: center;
  }
  
  .kb-pagination-info {
    width: 100%;
    text-align: center;
  }
  
  .kb-entry-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .modal {
    padding: var(--spacing-md);
  }
  
  .modal-content {
    max-height: 95vh;
  }
}

@media (max-width: 480px) {
  .kb-tabs {
    flex-direction: column;
  }
  
  .kb-tab {
    width: 100%;
    justify-content: center;
  }
  
  .pagination-btn {
    min-width: 32px;
    height: 32px;
  }
}