:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --bg-input: #0f172a;
  --border-color: #374151;
  --border-focus: #3b82f6;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --success-border: rgba(16, 185, 129, 0.4);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --warning-border: rgba(245, 158, 11, 0.4);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --danger-border: rgba(239, 68, 68, 0.4);
  --gold: #d4af37;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  font-size: 15px;
  min-height: 100vh;
}

/* Header */
header.gov-header {
  background-color: #030712;
  border-bottom: 2px solid #1e3a8a;
  padding: 12px 24px;
}

.gov-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: #93c5fd;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ttb-emblem {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #1e3a8a, #1e40af);
  border: 2px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: var(--gold);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.2);
}

.brand-titles h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.brand-titles p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.standards-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(30, 58, 138, 0.5);
  border: 1px solid #3b82f6;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #bfdbfe;
}

/* Navigation Tabs */
nav.app-nav {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
}

.nav-tab {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-secondary);
  padding: 14px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.nav-tab.active {
  color: #60a5fa;
  border-bottom-color: #3b82f6;
  background: rgba(59, 130, 246, 0.08);
}

/* Main Container */
main.app-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Sample Bar */
.sample-bar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.sample-bar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sample-bar label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sample-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  min-width: 320px;
  outline: none;
}

.sample-select:focus {
  border-color: var(--border-focus);
}

/* Studio Layout (Side-by-Side 3-Column) */
.studio-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
}

@media (max-width: 1100px) {
  .studio-grid {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 20px;
}

.card-header {
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #e5e7eb;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 18px;
}

/* Form Styles */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  font-family: inherit;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-focus);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
}

.btn-success {
  background: #059669;
  color: #ffffff;
}

.btn-success:hover {
  background: #047857;
}

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

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: #6b7280;
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 12px 22px;
  font-size: 1rem;
}

/* Artwork Canvas Viewer */
.viewer-container {
  position: relative;
  background: #050811;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.image-canvas-wrapper {
  position: relative;
  max-width: 100%;
  max-height: 540px;
}

.image-canvas-wrapper img {
  display: block;
  max-width: 100%;
  max-height: 520px;
  border-radius: 4px;
}

.bounding-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.bbox-rect {
  position: absolute;
  border: 2px solid rgba(59, 130, 246, 0.85);
  background: rgba(59, 130, 246, 0.15);
  border-radius: 3px;
  pointer-events: auto;
  cursor: pointer;
  transition: all 0.15s;
}

.bbox-rect:hover,
.bbox-rect.highlighted {
  border-color: #34d399;
  background: rgba(52, 211, 153, 0.3);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

/* Status Banners */
.compliance-banner {
  padding: 18px 22px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.compliance-banner.COMPLIANT {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
}

.compliance-banner.WARNING_REVIEW {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
}

.compliance-banner.REJECTED_MISMATCH {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
}

.status-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.status-icon {
  font-size: 2rem;
}

.status-text h2 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.status-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.metrics-pill-group {
  display: flex;
  gap: 10px;
}

.metric-pill {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.metric-pill .metric-val {
  font-weight: 700;
  font-size: 1rem;
}

/* Government Warning Inspector */
.warning-inspector {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
}

.warning-badges-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-pass {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.badge-fail {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

.badge-warn {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

.extracted-quote-box {
  background: var(--bg-input);
  border-left: 4px solid #3b82f6;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border-radius: 0 6px 6px 0;
  margin-top: 8px;
  white-space: pre-wrap;
}

/* Field Breakdown Table */
table.report-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

table.report-table th {
  background: #0f172a;
  color: var(--text-secondary);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

table.report-table td {
  padding: 12px 14px;
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: top;
}

table.report-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Batch Processing View */
.batch-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.kpi-title {
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 4px;
}

.kpi-value {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

/* Dropzone */
.dropzone {
  border: 2px dashed #4b5563;
  border-radius: 8px;
  padding: 32px 20px;
  text-align: center;
  background: rgba(15, 23, 42, 0.6);
  cursor: pointer;
  transition: all 0.15s;
  margin-bottom: 20px;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.06);
}

.dropzone-icon {
  font-size: 2.2rem;
  margin-bottom: 8px;
  color: #60a5fa;
}

/* Reference Guidelines */
.ref-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
}

.ref-section h3 {
  font-size: 1.15rem;
  color: #60a5fa;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.ref-section ul {
  padding-left: 20px;
  margin-top: 8px;
}

.ref-section li {
  margin-bottom: 6px;
  color: #d1d5db;
}

/* OCR Progress Modal Overlay */
.ocr-progress-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(11, 15, 25, 0.88);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 50;
  border-radius: 8px;
  padding: 24px;
}

.ocr-progress-box {
  background: #1e293b;
  border: 1px solid #3b82f6;
  border-radius: 8px;
  padding: 20px 24px;
  width: 90%;
  max-width: 440px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.ocr-progress-bar {
  width: 100%;
  height: 10px;
  background: #0f172a;
  border-radius: 6px;
  overflow: hidden;
  margin: 14px 0 10px;
  border: 1px solid #334155;
}

.ocr-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #10b981);
  width: 0%;
  transition: width 0.2s ease;
}

/* 27 CFR Part 16 Visual Diff Viewer */
.diff-container {
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 6px;
  padding: 14px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
}

.diff-row {
  display: flex;
  gap: 12px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed #1e293b;
}

.diff-row:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.diff-label {
  min-width: 130px;
  font-weight: 700;
  color: #94a3b8;
  font-size: 0.76rem;
  text-transform: uppercase;
}

.diff-content {
  flex: 1;
  word-break: break-word;
}

.diff-highlight-good {
  background: rgba(16, 185, 129, 0.25);
  color: #34d399;
  padding: 2px 4px;
  border-radius: 3px;
  font-weight: 700;
}

.diff-highlight-bad {
  background: rgba(239, 68, 68, 0.35);
  color: #fca5a5;
  padding: 2px 4px;
  border-radius: 3px;
  text-decoration: underline;
  font-weight: 700;
}

.diff-missing {
  background: rgba(245, 158, 11, 0.3);
  color: #fde68a;
  padding: 2px 4px;
  border-radius: 3px;
  font-style: italic;
}

/* Enhanced Bounding Box Pulses & Tooltips */
.bbox-rect {
  position: absolute;
  border: 2px solid rgba(59, 130, 246, 0.85);
  background: rgba(59, 130, 246, 0.15);
  border-radius: 3px;
  pointer-events: auto;
  cursor: pointer;
  transition: all 0.2s ease;
}

.bbox-rect:hover,
.bbox-rect.highlighted {
  border-color: #10b981 !important;
  background: rgba(16, 185, 129, 0.35) !important;
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.7);
  transform: scale(1.02);
  z-index: 10;
}

.bbox-rect.error-box {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.2);
}

.bbox-rect.error-box:hover,
.bbox-rect.error-box.highlighted {
  border-color: #f87171 !important;
  background: rgba(239, 68, 68, 0.45) !important;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.8);
}

.bbox-tag {
  position: absolute;
  bottom: 100%;
  left: 0;
  background: #1e293b;
  color: #f1f5f9;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  border: 1px solid #475569;
}

.bbox-rect:hover .bbox-tag,
.bbox-rect.highlighted .bbox-tag {
  opacity: 1;
}

/* Footer */
footer.gov-footer {
  text-align: center;
  padding: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  background: #030712;
  margin-top: 40px;
}