/* Design System and Modern Corporate Styling for Travel Expense Reimbursement System */

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

:root {
  /* Colors */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --secondary: #0f172a;
  --background: #f8fafc;
  --surface: #ffffff;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fef3c7;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --info: #06b6d4;
  --info-bg: #ecfeff;
  
  --border: #e2e8f0;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-white: #ffffff;
  
  /* Layout constraints */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Fonts */
  --font-display: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--background);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

button, input, select, textarea {
  font-family: inherit;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--background);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Layout: Header */
.app-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 70px;
}

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

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), #818cf8);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-weight: 700;
  font-family: var(--font-display);
  font-size: 1.25rem;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: -0.5px;
}

/* Top Navigation Bar */
.nav-menu {
  display: flex;
  gap: 0.5rem;
  height: 100%;
  align-items: center;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

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

.nav-item.active {
  color: var(--primary);
  background-color: var(--primary-light);
  font-weight: 600;
  border: 1px solid rgba(79, 70, 229, 0.15);
}

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

/* Header User Selector */
.user-selector-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-badge {
  background-color: var(--background);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.75rem;
}

.select-user-dropdown {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-main);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.select-user-dropdown:focus {
  border-color: var(--primary);
}

/* Main Container */
.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  position: relative;
}

/* Dynamic Page Switcher */
.page-view {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.page-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Glassmorphic/Modern Card Standard */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  transition: box-shadow var(--transition-normal);
}

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

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-left: 4px solid var(--primary);
  padding-left: 0.75rem;
}

/* Grid Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.span-2 {
  grid-column: span 2;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-input {
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  font-size: 0.95rem;
  color: var(--text-main);
  outline: none;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--primary);
  background-color: var(--surface);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-input[readonly] {
  background-color: #f1f5f9;
  color: var(--text-muted);
  cursor: not-allowed;
}

.form-info-tag {
  font-size: 0.75rem;
  color: var(--primary);
  margin-top: 0.15rem;
  font-weight: 500;
}

/* Dynamic Expenses Table */
.expense-table-container {
  overflow-x: auto;
  margin-bottom: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.expense-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 800px;
}

.expense-table th {
  background-color: #f1f5f9;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}

.expense-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.expense-table tr:last-child td {
  border-bottom: none;
}

.table-input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.6rem;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.table-input:focus {
  border-color: var(--primary);
}

.table-input-amount {
  text-align: right;
}

.action-btn-danger {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

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

.btn-add-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px dashed var(--primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-add-item:hover {
  background-color: var(--primary);
  color: var(--text-white);
  border-style: solid;
}

/* Upload Area */
.upload-dropzone {
  border: 2px dashed #cbd5e1;
  background-color: var(--background);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  position: relative;
}

.upload-dropzone:hover, .upload-dropzone.drag-active {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.upload-dropzone:hover .upload-icon {
  color: var(--primary);
}

.upload-text {
  font-weight: 500;
  color: var(--text-main);
  font-size: 0.95rem;
}

.upload-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.upload-input {
  display: none;
}

.file-list {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  animation: slideIn var(--transition-fast);
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.file-icon {
  color: var(--primary);
  width: 20px;
  height: 20px;
}

.file-name {
  font-weight: 500;
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

/* OCR Feedback Alert */
.ocr-banner {
  background-color: var(--info-bg);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--info);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  animation: fadeIn var(--transition-normal);
}

/* Validation Checklist */
.checklist {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.checklist-item.passed {
  color: var(--success);
  font-weight: 500;
}

.checklist-item.failed {
  color: var(--danger);
  font-weight: 500;
}

.checklist-status-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.checklist-item.passed .checklist-status-icon {
  color: var(--success);
}

.checklist-item.failed .checklist-status-icon {
  color: var(--danger);
}

/* Validation Summary Card Bottom Actions */
.submit-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-secondary {
  background-color: var(--surface);
  border-color: var(--border);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--background);
  border-color: #cbd5e1;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-white);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
}

.btn-primary:disabled {
  background-color: #cbd5e1;
  color: #94a3b8;
  cursor: not-allowed;
  box-shadow: none;
}

/* Verification State Indicator */
.validation-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.validation-badge.unchecked {
  background-color: #f1f5f9;
  color: var(--text-muted);
}

.validation-badge.passed {
  background-color: var(--success-bg);
  color: var(--success);
}

.validation-badge.failed {
  background-color: var(--danger-bg);
  color: var(--danger);
}

/* Workflow Preview */
.workflow-preview-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  margin-top: 1.5rem;
  padding: 0.5rem 0;
}

.workflow-preview-container::before {
  content: '';
  position: absolute;
  top: 25px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--border);
  z-index: 1;
}

.workflow-preview-node {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--surface);
  padding: 0 0.5rem;
}

.node-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #f1f5f9;
  border: 2px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  transition: all var(--transition-fast);
}

.workflow-preview-node.active .node-circle {
  background-color: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.1);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}

.node-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--secondary);
}

.node-assignee {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Subtitle under Title */
.page-header {
  margin-bottom: 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.page-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--secondary);
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Case Inquiry Page Tab navigation */
.inquiry-tabs-container {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  gap: 0.5rem;
}

.inquiry-tab {
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.inquiry-tab:hover {
  color: var(--primary);
  background-color: #f1f5f9;
}

.inquiry-tab.active {
  color: var(--primary);
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.inquiry-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--surface);
}

.badge-count {
  font-size: 0.75rem;
  background-color: #e2e8f0;
  color: var(--text-muted);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
}

.inquiry-tab.active .badge-count {
  background-color: var(--primary-light);
  color: var(--primary);
}

/* Case List and Filters */
.list-filter-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-input {
  width: 100%;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Cases Grid/List Views */
.cases-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.case-row-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: grid;
  grid-template-columns: auto 1.5fr 1fr 1fr 1fr auto;
  align-items: center;
  gap: 1.5rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.case-row-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.case-id-badge {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  text-align: center;
  white-space: nowrap;
}

.case-main-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow: hidden;
}

.case-row-title {
  font-weight: 600;
  color: var(--secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.95rem;
}

.case-row-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.case-row-amount {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary);
}

.case-row-status {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  width: fit-content;
}

.status-indicator.pending {
  background-color: var(--warning-bg);
  color: var(--warning);
}

.status-indicator.in-progress {
  background-color: var(--info-bg);
  color: var(--info);
}

.status-indicator.closed {
  background-color: var(--success-bg);
  color: var(--success);
}

.case-status-detail {
  font-size: 0.75rem;
  color: var(--text-muted);
}

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

.btn-icon {
  background-color: #f1f5f9;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: rgba(79, 70, 229, 0.2);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  color: #cbd5e1;
}

.empty-state-title {
  font-weight: 600;
  color: var(--secondary);
  font-size: 1.1rem;
}

/* Modal Overlay & Card Style Dialog */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background-color: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 680px;
  max-height: 85vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--background);
  color: var(--secondary);
}

.modal-body {
  padding: 2rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--border);
  background-color: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* Email Client Style Modal */
.email-client {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.email-field {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
  align-items: center;
}

.email-field-label {
  width: 70px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.email-field-value {
  flex: 1;
  font-size: 0.9rem;
  color: var(--text-main);
  font-weight: 500;
}

.email-input-text {
  flex: 1;
  border: none;
  outline: none;
  font-size: 0.9rem;
  color: var(--text-main);
  background: transparent;
}

.email-body-textarea {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.9rem;
  resize: vertical;
  min-height: 150px;
  outline: none;
  transition: border-color var(--transition-fast);
  background-color: var(--background);
  line-height: 1.5;
}

.email-body-textarea:focus {
  border-color: var(--primary);
  background-color: var(--surface);
}

/* Dynamic Case Progress Stepper (Timeline) */
.timeline-stepper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

.timeline-step {
  display: flex;
  gap: 1.25rem;
  position: relative;
}

.timeline-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: -20px;
  width: 2px;
  background-color: var(--border);
}

.timeline-step.approved:not(:last-child)::after {
  background-color: var(--success);
}

.timeline-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #f1f5f9;
  border: 2px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  z-index: 2;
  transition: all var(--transition-fast);
}

.timeline-step.approved .timeline-icon {
  background-color: var(--success);
  border-color: var(--success);
  color: var(--text-white);
}

.timeline-step.pending .timeline-icon {
  background-color: var(--warning);
  border-color: var(--warning);
  color: var(--text-white);
}

.timeline-step.rejected .timeline-icon {
  background-color: var(--danger);
  border-color: var(--danger);
  color: var(--text-white);
}

.timeline-content {
  flex: 1;
  background-color: #f8fafc;
  border: 1px solid var(--border);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
}

.timeline-step-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}

.timeline-step-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--secondary);
}

.timeline-step-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.timeline-step-assignee {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.timeline-step-comment {
  font-size: 0.85rem;
  color: var(--text-main);
  background-color: var(--surface);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid #cbd5e1;
}

.timeline-step.rejected .timeline-step-comment {
  border-left-color: var(--danger);
  background-color: var(--danger-bg);
  color: #b91c1c;
}

/* Toast Notification system */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 2000;
}

.toast {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1rem 1.25rem;
  min-width: 280px;
  max-width: 400px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: toastSlideIn var(--transition-normal);
  transition: all var(--transition-fast);
}

.toast.success {
  border-left-color: var(--success);
}

.toast.warning {
  border-left-color: var(--warning);
}

.toast.danger {
  border-left-color: var(--danger);
}

@keyframes toastSlideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-message {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
}

.toast-close {
  margin-left: auto;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
}

/* Tab/Grid transitions */
.tab-pane {
  display: none;
}
.tab-pane.active {
  display: block;
}

/* Detail Grid in views */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.detail-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--secondary);
}

/* Sub-card list of items */
.items-list-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  background-color: var(--background);
}

.item-list-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid #cbd5e1;
  font-size: 0.85rem;
}

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

.item-row-left {
  display: flex;
  flex-direction: column;
}

.item-row-right {
  font-family: var(--font-display);
  font-weight: 700;
  align-self: center;
}

.item-row-cat {
  font-weight: 600;
  color: var(--secondary);
}

.item-row-sub {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Manager Approval Area */
.approval-panel {
  background-color: #f8fafc;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-top: 1.5rem;
}

.approval-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--secondary);
  margin-bottom: 0.75rem;
}

.approval-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.approval-comments-input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  font-size: 0.9rem;
  outline: none;
  min-height: 80px;
  resize: vertical;
}

.approval-comments-input:focus {
  border-color: var(--primary);
}

/* Footer style */
.app-footer {
  margin-top: auto;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background-color: var(--surface);
}

/* Responsive details */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    height: auto;
    padding: 1rem;
    gap: 1rem;
  }
  
  .nav-menu {
    width: 100%;
    justify-content: center;
  }
  
  .case-row-card {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }
  
  .case-row-actions {
    grid-column: span 2;
    justify-content: flex-end;
  }
  
  .case-id-badge {
    grid-column: span 2;
    width: fit-content;
  }
}

/* Companion Search & Chips Styling */
.companion-suggestions-box {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 225px;
  overflow-y: auto;
  z-index: 150;
  margin-top: 4px;
  display: none;
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.suggestion-item:hover {
  background-color: var(--primary-light);
}

.suggestion-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #818cf8);
  color: var(--text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
}

.suggestion-info {
  display: flex;
  flex-direction: column;
}

.suggestion-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--secondary);
}

.suggestion-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.companion-chips-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.companion-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(79, 70, 229, 0.15);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  animation: slideIn var(--transition-fast);
}

.companion-chip-remove {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.1rem;
  border-radius: 50%;
  font-weight: bold;
  transition: all var(--transition-fast);
}

.companion-chip-remove:hover {
  background-color: var(--danger-bg);
  color: var(--danger);
}