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

:root {
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f4f4f5;
  --gray-200: #e4e4e7;
  --gray-300: #d4d4d8;
  --gray-400: #a1a1aa;
  --gray-500: #71717a;
  --gray-600: #52525b;
  --gray-700: #3f3f46;
  --gray-900: #18181b;
  --blue-50: #eff6ff;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --green-50: #f0fdf4;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --amber-50: #fffbeb;
  --amber-500: #f59e0b;
  --red-50: #fef2f2;
  --red-400: #f87171;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --sidebar-width: 260px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--gray-900);
  line-height: 1.5;
}

.app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--white);
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 10;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--gray-100);
  margin-bottom: 16px;
}

.sidebar__logo {
  width: 36px;
  height: 36px;
  background: var(--gray-900);
  color: var(--white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: -0.02em;
}

.sidebar__title {
  font-weight: 600;
  font-size: 15px;
}

.sidebar__subtitle {
  font-size: 12px;
  color: var(--gray-500);
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: none;
  background: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 14px;
  color: var(--gray-600);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-align: left;
}

.nav-item:hover {
  background: var(--gray-50);
  color: var(--gray-900);
}

.nav-item--active {
  background: var(--gray-100);
  color: var(--gray-900);
  font-weight: 500;
}

.sidebar__footer {
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}

.flow-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--gray-500);
  padding: 8px;
}

.flow-indicator__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-300);
}

.flow-indicator__dot--active {
  background: var(--green-500);
  animation: pulse 2s infinite;
}

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

/* Main */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 32px 40px;
  max-width: 1200px;
}

.view {
  display: none;
}

.view--active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  gap: 16px;
}

.page-header h1 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 4px;
}

.page-header__desc {
  color: var(--gray-500);
  font-size: 14px;
  margin-top: 4px;
}

.page-header__actions {
  display: flex;
  gap: 8px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 13px;
  color: var(--gray-500);
  cursor: pointer;
  padding: 0;
  margin-bottom: 8px;
}

.back-link:hover {
  color: var(--gray-900);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}

.btn--primary {
  background: var(--gray-900);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--gray-700);
}

.btn--secondary {
  background: var(--white);
  color: var(--gray-700);
  border-color: var(--gray-200);
}

.btn--secondary:hover {
  background: var(--gray-50);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.stat-card__label {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.stat-card__value {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat-card__change {
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 8px;
}

.stat-card__change--up {
  color: var(--green-600);
}

/* Panel */
.panel {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
}

.panel__header h2 {
  font-size: 15px;
  font-weight: 600;
}

.panel__actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--gray-400);
}

.search input {
  border: none;
  outline: none;
  font-family: var(--font);
  font-size: 13px;
  width: 220px;
  color: var(--gray-900);
}

.search input::placeholder {
  color: var(--gray-400);
}

.select {
  padding: 7px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 13px;
  color: var(--gray-700);
  background: var(--white);
  cursor: pointer;
}

/* Table */
.table-wrap {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th {
  text-align: left;
  padding: 10px 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}

.table tbody tr {
  cursor: pointer;
  transition: background 0.1s;
}

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

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

.table__id {
  font-weight: 500;
  color: var(--gray-900);
  font-variant-numeric: tabular-nums;
}

.table__link {
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 13px;
  color: var(--blue-600);
  cursor: pointer;
  padding: 0;
}

.table__link:hover {
  text-decoration: underline;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
}

.badge--success {
  background: var(--green-50);
  color: var(--green-600);
}

.badge--warning {
  background: var(--amber-50);
  color: var(--amber-500);
}

.badge--neutral {
  background: var(--gray-100);
  color: var(--gray-600);
}

.badge--ai {
  background: var(--blue-50);
  color: var(--blue-600);
}

/* Flow steps */
.flow-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 32px;
  max-width: 560px;
}

.flow-step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--gray-400);
}

.flow-step--done,
.flow-step--active {
  color: var(--gray-900);
}

.flow-step--active .flow-step__num {
  background: var(--gray-900);
  color: var(--white);
}

.flow-step--done .flow-step__num {
  background: var(--green-500);
  color: var(--white);
}

.flow-step__num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
}

.flow-step__line {
  flex: 1;
  height: 1px;
  background: var(--gray-200);
  margin: 0 12px;
  min-width: 40px;
}

.flow-panel {
  display: none;
}

.flow-panel--active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Upload */
.upload-zone {
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 64px 32px;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}

.upload-zone:hover,
.upload-zone--dragover {
  border-color: var(--gray-400);
  background: var(--gray-50);
}

.upload-zone__icon {
  color: var(--gray-400);
  margin-bottom: 16px;
}

.upload-zone h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.upload-zone p {
  color: var(--gray-500);
  font-size: 14px;
  margin-bottom: 24px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.incoming-preview {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.incoming-preview__doc {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
}

.doc-icon {
  width: 44px;
  height: 44px;
  background: var(--gray-50);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
}

.incoming-preview__name {
  font-weight: 500;
}

.incoming-preview__meta {
  font-size: 13px;
  color: var(--gray-500);
}

/* Document preview */
.doc-preview {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: var(--gray-50);
  font-size: 13px;
  line-height: 1.7;
}

.doc-preview__header {
  font-weight: 600;
  text-align: center;
  margin-bottom: 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-500);
}

.doc-preview--original mark.pii {
  background: var(--red-50);
  color: var(--red-400);
  padding: 1px 4px;
  border-radius: 3px;
}

.redacted {
  background: var(--gray-200);
  color: transparent;
  border-radius: 3px;
  user-select: none;
  letter-spacing: 0.05em;
}

/* AI Processing */
.ai-processing__header {
  margin-bottom: 24px;
}

.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--blue-50);
  color: var(--blue-600);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
}

.ai-badge__pulse {
  width: 8px;
  height: 8px;
  background: var(--blue-500);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

.processing-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: start;
  margin-bottom: 24px;
}

.processing-doc__label {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.processing-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-300);
  padding-top: 40px;
}

.ai-log {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-log__item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-500);
}

.ai-log__item--done {
  color: var(--gray-700);
}

.ai-log__item--active {
  color: var(--gray-900);
  font-weight: 500;
}

.ai-log__check {
  width: 20px;
  height: 20px;
  background: var(--green-50);
  color: var(--green-600);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}

.ai-log__spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--gray-900);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

/* Success banner */
.success-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--green-50);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}

.success-banner__icon {
  width: 36px;
  height: 36px;
  background: var(--green-500);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.success-banner p {
  font-size: 13px;
  color: var(--gray-600);
  margin-top: 2px;
}

/* Appeal card */
.appeal-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: var(--white);
}

.appeal-card--full {
  margin-bottom: 24px;
}

.appeal-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.appeal-card__id {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.appeal-card__title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.appeal-card__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.appeal-card__field-label {
  font-size: 12px;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.appeal-card__field-value {
  font-size: 14px;
  font-weight: 500;
}

.flow-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* Detail page */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

.detail-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.meta-list {
  padding: 4px 20px 16px;
}

.meta-list__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 14px;
}

.meta-list__item:last-child {
  border-bottom: none;
}

.meta-list__label {
  color: var(--gray-500);
}

.appeal-text {
  padding: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-700);
}

.appeal-text p + p {
  margin-top: 12px;
}

.timeline {
  padding: 4px 20px 16px;
}

.timeline__item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 13px;
}

.timeline__item:last-child {
  border-bottom: none;
}

.timeline__time {
  color: var(--gray-400);
  font-variant-numeric: tabular-nums;
  min-width: 36px;
}

.timeline__text {
  color: var(--gray-700);
}

/* Responsive */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .processing-arrow {
    padding: 0;
    transform: rotate(90deg);
  }

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

  .appeal-card__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .main {
    margin-left: 0;
    padding: 20px 16px;
  }

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

  .page-header {
    flex-direction: column;
  }

  .panel__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .appeal-card__grid {
    grid-template-columns: 1fr;
  }
}