/* ===== 1. Tokens ===== */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --bg-app: #ffffff;
  --bg-surface: #ffffff;
  --bg-subtle: #f9fafb;
  --bg-hover: #f3f4f6;
  --bg-muted: #e5e7eb;

  --border-color: #e5e7eb;
  --border-subtle: #f3f4f6;

  --text-primary: #030712;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --text-inverse: #ffffff;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-subtle: #eff6ff;
  --color-primary-text: #1d4ed8;

  --color-success: #059669;
  --color-success-subtle: #ecfdf5;
  --color-success-text: #047857;

  --color-danger: #dc2626;
  --color-danger-subtle: #fef2f2;
  --color-danger-text: #b91c1c;

  --color-warning: #d97706;
  --color-warning-subtle: #fffbeb;
  --color-warning-text: #b45309;

  --color-violet: #7c3aed;
  --color-violet-subtle: #f5f3ff;
  --color-violet-text: #6d28d9;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --transition-fast: 150ms ease;
  --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-app: #030712;
    --bg-surface: #111827;
    --bg-subtle: #1f2937;
    --bg-hover: #374151;
    --bg-muted: #4b5563;

    --border-color: #1f2937;
    --border-subtle: #111827;

    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --text-inverse: #030712;

    --color-primary: #3b82f6;
    --color-primary-subtle: rgba(59, 130, 246, 0.15);
    --color-primary-text: #60a5fa;

    --color-success-subtle: rgba(16, 185, 129, 0.15);
    --color-success-text: #34d399;

    --color-danger-subtle: rgba(239, 68, 68, 0.15);
    --color-danger-text: #f87171;

    --color-warning-subtle: rgba(245, 158, 11, 0.15);
    --color-warning-text: #fbbf24;

    --color-violet-subtle: rgba(139, 92, 246, 0.15);
    --color-violet-text: #a78bfa;
  }
}

:root[data-theme="dark"] {
  --bg-app: #030712;
  --bg-surface: #111827;
  --bg-subtle: #1f2937;
  --bg-hover: #374151;
  --bg-muted: #4b5563;

  --border-color: #1f2937;
  --border-subtle: #111827;

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-inverse: #030712;

  --color-primary: #3b82f6;
  --color-primary-subtle: rgba(59, 130, 246, 0.15);
  --color-primary-text: #60a5fa;

  --color-success-subtle: rgba(16, 185, 129, 0.15);
  --color-success-text: #34d399;

  --color-danger-subtle: rgba(239, 68, 68, 0.15);
  --color-danger-text: #f87171;

  --color-warning-subtle: rgba(245, 158, 11, 0.15);
  --color-warning-text: #fbbf24;

  --color-violet-subtle: rgba(139, 92, 246, 0.15);
  --color-violet-text: #a78bfa;
}

/* ===== 2. Reset & Layout ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

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

.workspace-shell {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  width: 100%;
  overflow: hidden;
}

.workspace-panel {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1.5rem;
}

/* ===== 3. Header ===== */
.workspace-header {
  height: 56px;
  flex-shrink: 0;
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-surface);
}

.workspace-header-title-box {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1rem;
  min-width: 0;
}

.icon-badge {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  border-radius: 2px;
}

.title-meta { min-width: 0; }

.page-title {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-subtitle {
  font-size: 10px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.metric-column {
  display: none;
  min-width: 100px;
  padding: 0 1rem;
  border-left: 1px solid var(--border-color);
  flex-direction: column;
  justify-content: center;
}

@media (min-width: 768px) {
  .metric-column { display: flex; }
}

.micro-label {
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.metric-value {
  font-size: 1.125rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.metric-value.accent-green { color: var(--color-success); }
.metric-value.accent-red { color: var(--color-danger); }
.metric-value.accent-warning { color: var(--color-warning); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 0.75rem;
  border-left: 1px solid var(--border-color);
}

/* ===== 4. Tabs ===== */
.tab-bar {
  min-height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
}

.tab-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
}

.tab-button {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: transparent;
  border: none;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.tab-button:hover { background-color: var(--bg-hover); color: var(--text-primary); }

.tab-button.active { background-color: var(--text-primary); color: var(--text-inverse); }

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ===== 5. Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  border: 1px solid transparent;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary { background-color: var(--color-primary); color: var(--text-inverse); }
.btn-primary:hover { background-color: var(--color-primary-hover); }

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

.btn-danger { background-color: var(--color-danger-subtle); color: var(--color-danger-text); }
.btn-danger:hover { background-color: var(--color-danger); color: var(--text-inverse); }

.btn-sm { padding: 0.3rem 0.6rem; font-size: 10px; }

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

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
}
.btn-icon:hover { background-color: var(--bg-hover); color: var(--text-primary); }

/* ===== 6. KPI cards ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 1rem;
}

.kpi-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.kpi-card-value {
  font-size: 1.25rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.kpi-card-value.accent-red { color: var(--color-danger); }
.kpi-card-value.accent-green { color: var(--color-success); }

.kpi-card-footer { font-size: 10px; color: var(--text-muted); }

/* ===== 7. Section headers / toolbars ===== */
.section-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.section-title {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.toolbar-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

.search-input {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 11px;
  min-width: 180px;
}
.search-input:focus { outline: none; border-color: var(--color-primary); }

.filter-select {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 11px;
}

/* ===== 8. Data tables ===== */
.data-table-container {
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 12px; }

.data-table thead { background-color: var(--bg-subtle); border-bottom: 1px solid var(--border-color); }

.data-table th {
  padding: 0.625rem 0.875rem;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.data-table td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr:hover { background-color: var(--bg-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }

.text-right { text-align: right; }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.text-muted { color: var(--text-muted); }

.empty-row td {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
  font-size: 11px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.45rem;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge-success { background-color: var(--color-success-subtle); color: var(--color-success-text); }
.badge-warning { background-color: var(--color-warning-subtle); color: var(--color-warning-text); }
.badge-danger { background-color: var(--color-danger-subtle); color: var(--color-danger-text); }
.badge-neutral { background-color: var(--bg-muted); color: var(--text-secondary); }
.badge-primary { background-color: var(--color-primary-subtle); color: var(--color-primary-text); }

/* ===== 9. Drawer ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  justify-content: flex-end;
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.drawer-overlay[aria-hidden="false"] { visibility: visible; opacity: 1; }

.drawer-backdrop { position: absolute; inset: 0; background-color: rgba(0, 0, 0, 0.4); backdrop-filter: blur(2px); }

.drawer-panel {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 100%;
  background-color: var(--bg-surface);
  border-left: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.drawer-overlay[aria-hidden="false"] .drawer-panel { transform: translateX(0); }

.drawer-header {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.drawer-content { flex: 1; overflow-y: auto; padding: 1.25rem; }

.drawer-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-surface);
}

/* ===== 10. Forms ===== */
.form-grid { display: flex; flex-direction: column; gap: 0.9rem; }

.form-label { display: flex; flex-direction: column; gap: 0.3rem; }

.form-label span {
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form-input, .form-select, .form-textarea {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-size: 12px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--color-primary); }

.form-textarea { resize: vertical; min-height: 60px; font-family: inherit; }

.form-row { display: flex; gap: 0.6rem; }
.form-row .form-label { flex: 1; }

.uid-scan-row { display: flex; gap: 0.5rem; align-items: flex-end; }
.uid-scan-row .form-label { flex: 1; }

.field-hint { font-size: 10px; color: var(--text-muted); }

/* ===== 11. Scanner modal ===== */
.scanner-video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: #000;
  overflow: hidden;
}

.scanner-video-wrap video { width: 100%; height: 100%; object-fit: cover; }

.scanner-frame {
  position: absolute;
  inset: 12%;
  border: 2px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.35);
}

.scanner-status {
  padding: 0.75rem 1.25rem;
  font-size: 11px;
  color: var(--text-secondary);
  text-align: center;
}

.scanner-result-uid {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-primary);
}

/* ===== 12. QR tile ===== */
.qr-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1.25rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
}

.qr-tile canvas { background-color: #fff; padding: 8px; }

.qr-tile-uid { font-family: var(--font-mono); font-weight: 900; font-size: 13px; letter-spacing: 0.05em; }
.qr-tile-label { font-size: 10px; color: var(--text-muted); text-align: center; }

/* ===== 13. Lookup pill (scan-or-pick result) ===== */
.entity-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  background-color: var(--color-primary-subtle);
  border: 1px solid var(--color-primary);
  font-size: 11px;
}

.entity-pill .name { font-weight: 700; color: var(--text-primary); }
.entity-pill .uid { font-family: var(--font-mono); color: var(--text-muted); font-size: 10px; }

.entity-pill-empty {
  padding: 0.55rem 0.75rem;
  border: 1px dashed var(--border-color);
  color: var(--text-muted);
  font-size: 11px;
  text-align: center;
}

/* ===== 14. Toast ===== */
.toast-stack {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1200;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
}

.toast {
  padding: 0.6rem 1rem;
  background-color: var(--text-primary);
  color: var(--text-inverse);
  font-size: 11px;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
  animation: toast-in 150ms ease;
}

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

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

/* ===== 15. Switch (settings) ===== */
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
}

.switch-meta { display: flex; align-items: flex-start; gap: 0.75rem; }

.switch-title { font-size: 12px; font-weight: 700; color: var(--text-primary); }
.switch-description { font-size: 11px; color: var(--text-muted); }

/* ===== 16. Print ===== */
@media print {
  body * { visibility: hidden; }
  #printArea, #printArea * { visibility: visible; }
  #printArea { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; }
}

/* ===== 17. Utility ===== */
.hidden { display: none !important; }
.flex-1 { flex: 1; }
.mt-1 { margin-top: 0.5rem; }