:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --bg: #f4f5f9;
  --panel: #ffffff;
  --border: #e5e7eb;
  --text: #1f2330;
  --muted: #6b7280;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --warning: #d97706;
  --warning-bg: #fef3c7;
  --info: #2563eb;
  --info-bg: #dbeafe;
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

/* Sidebar */
.sidebar {
  width: 230px;
  background: #171a26;
  color: #e5e7eb;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.brand {
  padding: 22px 20px;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav { display: flex; flex-direction: column; padding: 12px; gap: 4px; }

.nav-link {
  text-align: left;
  background: none;
  border: none;
  color: #a8adc0;
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }

.nav-link.active {
  background: var(--primary);
  color: #fff;
}

/* Main */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h1 { font-size: 20px; font-weight: 700; }

.conn-status {
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
}

.conn-status.offline { color: var(--danger); }

.topbar-right { display: flex; align-items: center; gap: 16px; }

.user-badge {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
}
.user-badge:hover { background: #f3f4f6; }
.user-badge .role-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  background: var(--info-bg);
  color: var(--info);
}

/* Login screen */
.login-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
}
.login-card {
  background: var(--panel);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 36px;
  width: 360px;
  max-width: 92vw;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.login-brand { margin-bottom: 6px; }
.brand-logo { height: 48px; width: auto; }
.brand-logo-sm { height: 28px; width: auto; }
.login-card h2 { font-size: 16px; color: var(--muted); font-weight: 600; margin-bottom: 20px; }
.login-error { color: var(--danger); font-size: 13px; margin: -6px 0 14px; min-height: 16px; }

.content { padding: 28px 32px; flex: 1; }

.page { display: none; }
.page.active { display: block; }

/* Hides Unit Price / Stock Value everywhere at once (KPI card, table
   columns, report columns) for roles without the View Price permission —
   toggled by adding/removing "hide-price" on body in applyRolePermissions(). */
body.hide-price .price-col { display: none !important; }

/* KPI cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.kpi-card {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 20px 22px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}

.kpi-label { font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 8px; }
.kpi-value { font-size: 28px; font-weight: 700; }
.kpi-value-small { font-size: 15px; }
.kpi-card.accent-danger .kpi-value { color: var(--danger); }

/* Monthly Inventory Trend — top Stock Out products, ranked bar list */
.topout-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.topout-row:last-child { margin-bottom: 0; }
.topout-name {
  flex: 0 0 180px;
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topout-track { flex: 1; height: 20px; background: #f3f2ef; border-radius: 4px; overflow: hidden; }
.topout-bar { height: 100%; min-width: 4px; background: #e34948; border-radius: 0 4px 4px 0; }
.topout-value { flex: 0 0 auto; min-width: 32px; text-align: right; font-size: 13px; font-weight: 700; color: var(--text); }

/* Panels */
.panel {
  background: var(--panel);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 24px;
}

.panel h2 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.panel .muted { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.panel-header h2 { margin: 0; }

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

/* Sub-tabs (e.g. Product Management: Product / Category) */
.subnav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.subnav-tabs { display: flex; gap: 4px; }
.subnav-link {
  background: none;
  border: none;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.subnav-link:hover { color: var(--text); }
.subnav-link.active { color: var(--primary); border-bottom-color: var(--primary); }
.subpage { display: none; }
.subpage.active { display: block; }

/* Buttons */
.btn {
  padding: 9px 18px;
  border-radius: 8px;
  border: none;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-outline {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { background: #f3f4f6; }

.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-danger:hover { opacity: 0.8; }

.btn-sm { padding: 6px 10px; font-size: 12px; }

/* Filters */
.filter-row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}
.filter-row input, .filter-row select {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
}
.filter-row input { flex: 1; }
.filter-row input[type="date"] { flex: 0 0 150px; }

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

table { width: 100%; border-collapse: collapse; font-size: 13px; }

th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

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

.empty-row td {
  text-align: center;
  color: var(--muted);
  padding: 30px;
}

.actions { display: flex; gap: 6px; }

.sku-cell { font-size: 11px; white-space: nowrap; }

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }

/* Alerts list */
.alert-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-radius: 8px;
  background: #fef2f2;
  border-left: 4px solid var(--danger);
  margin-bottom: 10px;
}
.alert-item .item-name { font-weight: 600; }
.alert-item .item-detail { font-size: 12px; color: var(--muted); }

.empty-state {
  color: var(--muted);
  padding: 20px;
  text-align: center;
}

/* Forms / Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 17, 26, 0.5);
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal.active { display: flex; }

.modal-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  width: 460px;
  max-width: 92vw;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
}
.modal-card.modal-wide {
  width: 820px;
}

.modal-card h2 { margin-bottom: 18px; font-size: 18px; }

.modal-close {
  position: absolute;
  top: 18px; right: 20px;
  background: none; border: none;
  font-size: 22px; cursor: pointer;
  color: var(--muted);
}

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field-hint { font-size: 12px; color: var(--muted); margin-top: 6px; }
.uppercase-input { text-transform: uppercase; }
.auto-filled-input { background: #f9fafb; color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
}
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

.checkbox-row { display: flex; gap: 20px; }
.checkbox-row label {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 400; margin-bottom: 0; color: var(--text);
}
.checkbox-row input[type="checkbox"] { width: auto; }

/* Autocomplete */
.autocomplete { position: relative; }
.autocomplete-list {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 4px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 220px;
  overflow-y: auto;
  z-index: 20;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.autocomplete-list.active { display: block; }
.autocomplete-item {
  padding: 9px 12px;
  cursor: pointer;
  font-size: 13px;
}
.autocomplete-item:hover,
.autocomplete-item.highlighted { background: #f3f4f6; }
.autocomplete-item .ac-sku { color: var(--muted); font-size: 11px; }
.autocomplete-empty { padding: 9px 12px; font-size: 13px; color: var(--muted); }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* Toasts */
.toast-container {
  position: fixed;
  top: 20px; right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 2000;
}

.toast {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: slideIn 0.2s ease-out;
}
.toast-success { background: var(--success); }
.toast-danger { background: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(30px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.page-btn {
  padding: 6px 11px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.page-btn:hover:not(:disabled) { background: #f3f4f6; }
.page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.page-btn:disabled { opacity: 0.4; cursor: default; }

/* Reports */
.report-logo { display: none; height: 50px; width: auto; margin: 0 auto 8px; }
.report-title { display: none; text-align: center; margin: 4px 0 4px; font-size: 19px; }
.report-period { display: none; text-align: center; margin: 0 0 18px; font-size: 13px; color: var(--muted); }
.report-table { margin-top: 14px; }
.report-total { font-weight: 700; background: #f9fafb; }
.report-signatures { display: none; justify-content: space-between; margin-top: 48px; }
.report-sig-block { text-align: center; min-width: 200px; }
.report-sig-line { border-top: 1px solid #333; margin-top: 40px; }
.report-sig-row { font-size: 12px; padding-top: 4px; }

@media (max-width: 800px) {
  .sidebar { width: 70px; }
  .brand span, .nav-link { display: none; }
  .content { padding: 20px; }
}

@media print {
  .sidebar, .topbar, #reportsPageHeader, .field, .field-row { display: none !important; }
  .report-logo, .report-title { display: block !important; }
  .report-period.has-content { display: block !important; }
  .report-signatures { display: flex !important; }
  .app, .main, .content { display: block; padding: 0; margin: 0; }
  .panel { border: none; box-shadow: none; padding: 0; margin: 0; }
}

/* Stock Request / Issue item builder */
.item-rows { margin-bottom: 14px; }
.item-row { border: 1px solid var(--border); border-radius: 8px; padding: 10px; margin-bottom: 10px; }
.item-row-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 8px; font-size: 12px; color: var(--muted);
}
.item-row-top label { display: flex; align-items: center; gap: 5px; font-weight: 400; }
.item-row-fields { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-start; }
.item-row-fields > .field.autocomplete { flex: 2 1 220px; margin-bottom: 0; }
.item-row-fields input {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: inherit;
}
.item-sku-manual, .item-name-en-manual, .item-name-kh-manual { flex: 1 1 130px; }
.item-qty-input { flex: 0 0 70px; }
.item-remark { flex: 1 1 140px; }
.item-remove-btn { flex: 0 0 auto; align-self: center; }

/* Print Request/Issue Form */
#printArea { display: none; }
@media print {
  body.printing-request .app { display: none !important; }
  body.printing-request #toastContainer { display: none !important; }
  body.printing-request #printArea { display: block !important; }
}
.print-form { padding: 24px; font-family: inherit; color: #111; }
.print-header { text-align: center; border-bottom: 2px solid #333; padding-bottom: 12px; margin-bottom: 8px; }
.print-logo { height: 50px; width: auto; display: block; margin: 0 auto 8px; }
.print-header h2 { font-size: 18px; margin: 0; }
.print-header h3 { font-size: 14px; margin: 2px 0 0; color: #444; }
.print-number { text-align: right; font-size: 13px; margin-bottom: 16px; }
.print-meta { margin-bottom: 12px; font-size: 13px; }
.print-meta div { margin-bottom: 4px; }
.print-table { width: 100%; border-collapse: collapse; margin-bottom: 32px; border: 1px solid #333; }
.print-table th, .print-table td { border: 1px solid #333; padding: 6px 8px; font-size: 12px; text-align: left; }
.print-table tbody tr:last-child td { border-bottom: 1px solid #333; }
.print-signatures { display: flex; justify-content: space-between; margin-top: 40px; }
.print-sig-block { text-align: center; min-width: 220px; }
.print-sig-line { border-top: 1px solid #333; margin-top: 40px; }
.print-sig-row { font-size: 12px; padding-top: 4px; }