/* ================================
   Dimely AI - Design System
   ================================ */

:root {
  /* Colors */
  --color-navy: #1F2937;
  --color-navy-light: #374151;
  --color-navy-dark: #111827;
  --color-green: #10B981;
  --color-green-light: #34D399;
  --color-green-dark: #059669;
  --color-blue: #0EA5E9;
  --color-blue-light: #38BDF8;
  --color-amber: #F59E0B;
  --color-amber-light: #FBBF24;
  --color-red: #EF4444;
  --color-red-light: #F87171;

  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;

  /* Semantic */
  --color-success: var(--color-green);
  --color-warning: var(--color-amber);
  --color-error: var(--color-red);
  --color-info: var(--color-blue);

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* 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: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* 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);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ================================
   Reset & Base
   ================================ */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-navy);
  background-color: var(--color-gray-50);
  min-height: 100vh;
}

/* ================================
   Header
   ================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-navy);
  color: var(--color-white);
  padding: var(--spacing-md) var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.header-content {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-green);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-white);
}

.header-stats {
  display: flex;
  gap: var(--spacing-xl);
  font-size: var(--font-size-sm);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.stat-value {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.stat-label {
  color: var(--color-gray-400);
}

/* ================================
   Main Layout
   ================================ */

.main {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--spacing-xl);
  min-height: calc(100vh - 70px);
}

@media (max-width: 1024px) {
  .main {
    grid-template-columns: 1fr;
  }
}

/* ================================
   Upload Panel
   ================================ */

.upload-panel {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  height: fit-content;
  position: sticky;
  top: 90px;
}

.panel-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.panel-title svg {
  width: 20px;
  height: 20px;
  color: var(--color-blue);
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  background: var(--color-gray-50);
}

.drop-zone:hover {
  border-color: var(--color-blue);
  background: rgba(14, 165, 233, 0.05);
}

.drop-zone.drag-over {
  border-color: var(--color-blue);
  background: rgba(14, 165, 233, 0.1);
  transform: scale(1.02);
}

.drop-zone.uploading {
  pointer-events: none;
  opacity: 0.7;
}

.drop-zone.success {
  border-color: var(--color-green);
  background: rgba(16, 185, 129, 0.1);
}

.drop-zone.error {
  border-color: var(--color-red);
  background: rgba(239, 68, 68, 0.1);
}

.drop-zone-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-gray-400);
}

.drop-zone.drag-over .drop-zone-icon,
.drop-zone:hover .drop-zone-icon {
  color: var(--color-blue);
}

.drop-zone-text {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xs);
}

.drop-zone-hint {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

.drop-zone-input {
  display: none;
}

/* Progress */
.upload-progress {
  margin-top: var(--spacing-lg);
  display: none;
}

.upload-progress.visible {
  display: block;
}

.progress-bar {
  height: 6px;
  background: var(--color-gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-blue);
  border-radius: var(--radius-sm);
  width: 0%;
  transition: width var(--transition-normal);
}

.progress-fill.success {
  background: var(--color-green);
}

.progress-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-top: var(--spacing-sm);
  text-align: center;
}

/* Recent Uploads */
.recent-uploads {
  margin-top: var(--spacing-xl);
}

.recent-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.recent-list {
  list-style: none;
}

.recent-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: var(--font-size-sm);
}

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

.recent-item-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.recent-item-icon.success {
  color: var(--color-green);
}

.recent-item-icon.processing {
  color: var(--color-blue);
  animation: spin 1s linear infinite;
}

.recent-item-icon.error {
  color: var(--color-red);
}

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

.recent-item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ================================
   Results Panel
   ================================ */

.results-panel {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.results-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.results-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

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

/* ================================
   Buttons
   ================================ */

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-blue-light);
}

.btn-secondary {
  background: var(--color-gray-100);
  color: var(--color-navy);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-gray-200);
}

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

.btn-success:hover:not(:disabled) {
  background: var(--color-green-light);
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--color-red-light);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-600);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-gray-100);
}

/* ================================
   Table
   ================================ */

.table-container {
  flex: 1;
  overflow: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th {
  background: var(--color-gray-50);
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--color-gray-600);
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 10;
  white-space: nowrap;
}

.table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}

.table tr:hover {
  background: var(--color-gray-50);
}

/* Editable Cells */
.cell-editable {
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  min-height: 24px;
}

.cell-editable:hover {
  background: var(--color-gray-100);
}

.cell-editable.editing {
  padding: 0;
}

.cell-input {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 2px solid var(--color-blue);
  border-radius: var(--radius-sm);
  font-size: inherit;
  font-family: inherit;
  background: var(--color-white);
  outline: none;
}

.cell-input:focus {
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: capitalize;
}

.status-badge.verified {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-green-dark);
}

.status-badge.review {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-amber);
}

.status-badge.incomplete {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-red);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-badge.verified .status-dot {
  background: var(--color-green);
}

.status-badge.review .status-dot {
  background: var(--color-amber);
}

.status-badge.incomplete .status-dot {
  background: var(--color-red);
}

/* Actions Column */
.row-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-gray-500);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--color-gray-100);
  color: var(--color-navy);
}

.btn-icon.delete:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-red);
}

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

/* ================================
   Empty State
   ================================ */

.empty-state {
  padding: var(--spacing-2xl);
  text-align: center;
  color: var(--color-gray-500);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-gray-300);
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--spacing-sm);
}

.empty-state-text {
  max-width: 400px;
  margin: 0 auto;
}

/* ================================
   Toast Notifications
   ================================ */

.toast-container {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: slideIn var(--transition-normal) ease;
  max-width: 400px;
}

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

.toast.success {
  background: var(--color-green);
}

.toast.error {
  background: var(--color-red);
}

.toast.warning {
  background: var(--color-amber);
  color: var(--color-navy);
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
  font-size: var(--font-size-sm);
}

.toast-close {
  background: transparent;
  border: none;
  color: inherit;
  opacity: 0.7;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.toast-close:hover {
  opacity: 1;
}

/* ================================
   Modal / Dialog
   ================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  width: 90%;
  padding: var(--spacing-xl);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

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

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.modal-text {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
}

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

/* ================================
   Loading Spinner
   ================================ */

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-gray-200);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ================================
   Utility Classes
   ================================ */

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-muted {
  color: var(--color-gray-500);
}

.text-small {
  font-size: var(--font-size-sm);
}

.currency {
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
}

.hidden {
  display: none !important;
}

/* ================================
   Responsive
   ================================ */

@media (max-width: 768px) {
  .header-stats {
    display: none;
  }

  .main {
    padding: var(--spacing-md);
  }

  .upload-panel {
    position: static;
  }

  .table {
    font-size: var(--font-size-xs);
  }

  .table th,
  .table td {
    padding: var(--spacing-sm);
  }
}