:root {
  --bg-app: #0f141f;
  --bg-panel: #182032;
  --bg-input: #101624;
  --border-subtle: #2b3650;
  --border-focus: #60a5fa;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-green: #10b981;
  --accent-green-hover: #059669;
  --accent-amber: #f59e0b;
  --accent-purple: #a855f7;
  --accent-red: #ef4444;
  --radius-md: 10px;
  --radius-sm: 6px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.45;
}

/* Header */
.app-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: #131a29;
  border-bottom: 1px solid var(--border-subtle);
}

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

.brand-badge {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: #fff;
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.subtitle {
  margin: 2px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.session-stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.stat-pill {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  display: flex;
  flex-direction: column;
  min-width: 110px;
}

.stat-pill.highlight-stat {
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(16, 185, 129, 0.08);
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* Main Grid */
.workspace-grid {
  display: grid;
  grid-template-columns: 450px 1fr;
  gap: 18px;
  padding: 18px 24px;
  max-width: 1800px;
  margin: 0 auto;
}

@media (max-width: 1180px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }
}

.left-panel,
.right-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

fieldset {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin: 0 0 14px 0;
}

fieldset:last-child {
  margin-bottom: 0;
}

legend {
  font-weight: 700;
  font-size: 0.9rem;
  color: #93c5fd;
  padding: 0 6px;
}

/* Gestalt Proximity Rule: vertical margin between label and input (4px) is less than margin between form groups (14px) */
.field-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}

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

.field-group label,
.group-label {
  font-size: 0.84rem;
  font-weight: 600;
  color: #e2e8f0;
  margin-bottom: 4px;
}

.label-sub {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.field-hint {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 4px;
}

input[type="text"],
input[type="file"],
select {
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 0.95rem;
  font-family: inherit;
}

input:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

.set-selector-row {
  display: flex;
  gap: 8px;
}

.set-selector-row input {
  flex: 1;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.two-col-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Radio Pill Groups */
.radio-pill-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  user-select: none;
}

.radio-pill input[type="radio"] {
  accent-color: var(--accent-blue);
  margin: 0;
}

.radio-pill:has(input:checked) {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.18);
  color: #fff;
}

.radio-pill.foil-pill:has(input:checked) {
  border-color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.2);
}

.radio-pill.etched-pill:has(input:checked) {
  border-color: var(--accent-purple);
  background: rgba(168, 85, 247, 0.2);
}

.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.84rem;
  padding-top: 6px;
}

/* Numpad Input Box */
.numpad-fieldset {
  border-color: rgba(59, 130, 246, 0.55);
  background: rgba(30, 41, 59, 0.55);
}

.numpad-input-row {
  display: flex;
  gap: 8px;
}

#collector-num-input {
  flex: 1;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 10px 14px;
  font-variant-numeric: tabular-nums;
}

/* Buttons */
.btn {
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
  background: #334155;
  transition: background 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  background: #475569;
}

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

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

.btn-accent {
  background: var(--accent-green);
}

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

.btn-secondary {
  background: #27354d;
  border-color: #3b4d6b;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.45);
  color: #fca5a5;
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.35);
}

.btn-small {
  padding: 5px 10px;
  font-size: 0.78rem;
}

kbd {
  background: #0b0f19;
  border: 1px solid #3b4664;
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.75rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Verification Panel */
.verification-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.verification-header h2 {
  margin: 0;
  font-size: 1rem;
}

.variant-badge {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.variant-badge.standard {
  background: #1e293b;
  color: #cbd5e1;
  border: 1px solid #475569;
}

.variant-badge.special {
  background: rgba(245, 158, 11, 0.22);
  color: #fde68a;
  border: 1px solid #f59e0b;
}

.hidden {
  display: none !important;
}

.verification-body {
  display: grid;
  grid-template-columns: 185px 1fr;
  gap: 14px;
  align-items: start;
}

.card-image-frame img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
}

.verify-title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.verify-meta {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.verify-price-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px;
  margin-bottom: 10px;
}

.price-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.price-big {
  font-size: 1.2rem;
  font-weight: 800;
  color: #34d399;
}

.sku-code {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.95rem;
  font-weight: 600;
  color: #93c5fd;
}

.warning-banner {
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid var(--accent-amber);
  color: #fde68a;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.quick-fix-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Right Column: TCGplayer Merger & Table */
.panel-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.panel-header-row h2,
.table-header-bar h2 {
  margin: 0;
  font-size: 1.05rem;
}

.panel-sub {
  margin: 2px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.export-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.merger-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 16px;
  align-items: start;
}

@media (max-width: 1400px) {
  .merger-grid {
    grid-template-columns: 1fr;
  }
}

.pricing-rules-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 10px;
}

/* Table */
.table-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.table-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.table-scroll-container {
  overflow-x: auto;
  max-height: 620px;
  overflow-y: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.inventory-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.inventory-table th,
.inventory-table td {
  padding: 9px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.inventory-table th {
  background: #111827;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: sticky;
  top: 0;
  z-index: 1;
}

.inventory-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.08);
}

.inventory-table tr.bulk-warning-row {
  opacity: 0.72;
  background: rgba(239, 68, 68, 0.07);
}

.inventory-table tr.high-value-row {
  background: rgba(16, 185, 129, 0.1);
}

.tag-foil {
  background: rgba(245, 158, 11, 0.2);
  color: #fcd34d;
  border: 1px solid rgba(245, 158, 11, 0.5);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.74rem;
}

.tag-etched {
  background: rgba(168, 85, 247, 0.2);
  color: #d8b4fe;
  border: 1px solid rgba(168, 85, 247, 0.5);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.74rem;
}

.tag-variant {
  background: rgba(59, 130, 246, 0.18);
  color: #93c5fd;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.empty-row td {
  text-align: center;
  padding: 32px !important;
  color: var(--text-muted);
}