/* ============ CSS Variables ============ */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --success: #10b981;
  --success-light: #ecfdf5;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --sidebar-w: 240px;
  --topbar-h: 60px;
}

/* ============ Reset & Base ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft JhengHei', sans-serif; background: var(--bg); color: var(--text); display: flex; min-height: 100vh; font-size: 14px; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* ============ Layout ============ */
#sidebar {
  width: var(--sidebar-w);
  background: var(--text);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform 0.25s ease;
}
#sidebar .btn-outline {
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
#sidebar .btn-outline:hover {
  background: rgba(255,255,255,0.1);
}

#main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ============ Sidebar ============ */
.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}

.logo svg { color: #a5b4fc; flex-shrink: 0; }

.sidebar-nav { padding: 12px 0; flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  color: #94a3b8;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}

.nav-item:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-item.active { background: rgba(79,70,229,0.25); color: #a5b4fc; border-left-color: #a5b4fc; }

/* ============ Topbar ============ */
.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 14px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar h1 { font-size: 17px; font-weight: 600; }

.menu-btn {
  display: none;
  padding: 6px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}
.menu-btn:hover { background: var(--bg); }

/* ============ Views ============ */
.view { display: none; padding: 24px; flex: 1; }
.view.active { display: block; }

/* ============ Cards & Surfaces ============ */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.card-body { padding: 20px; }

/* ============ Stat Cards ============ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-left: 4px solid transparent;
}

.stat-card.primary { border-left-color: var(--primary); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.danger  { border-left-color: var(--danger); }
.stat-card.success { border-left-color: var(--success); }

.stat-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.stat-card.primary .stat-icon { background: var(--primary-light); color: var(--primary); }
.stat-card.warning .stat-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.danger  .stat-icon { background: var(--danger-light);  color: var(--danger); }
.stat-card.success .stat-icon { background: var(--success-light); color: var(--success); }

.stat-info { flex: 1; min-width: 0; }
.stat-value { font-size: 26px; font-weight: 700; line-height: 1.1; }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ============ Dashboard Grid ============ */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 2px solid var(--border); }
tbody tr { border-bottom: 1px solid var(--border); transition: background 0.1s; }
tbody tr:hover { background: var(--bg); }
tbody tr:last-child { border-bottom: none; }

th {
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: left;
  white-space: nowrap;
}

th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--text); }
th.sort-asc::after  { content: ' ↑'; color: var(--primary); }
th.sort-desc::after { content: ' ↓'; color: var(--primary); }

td { padding: 12px 14px; vertical-align: middle; }

.product-name { font-weight: 500; }
.sku { font-size: 12px; color: var(--text-muted); margin-top: 2px; font-family: monospace; }

/* ============ Badges ============ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: var(--success-light); color: #065f46; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-danger  { background: var(--danger-light);  color: #991b1b; }
.badge-default    { background: var(--bg); color: var(--text-muted); }
.badge-secondary  { background: #f1f5f9; color: #64748b; }
.selected-row     { background: var(--primary-light) !important; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 13px;
  transition: background 0.15s, opacity 0.15s;
  line-height: 1;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.icon-btn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--bg); color: var(--text); }
.icon-btn.danger:hover { background: var(--danger-light); color: var(--danger); }

.action-btns { display: flex; gap: 4px; align-items: center; }

/* ============ Toolbar / Search ============ */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-box input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  outline: none;
  transition: border-color 0.15s;
}

.search-box input:focus { border-color: var(--primary); }

.search-icon {
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  pointer-events: none;
}

.filter-select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  outline: none;
  color: var(--text);
  transition: border-color 0.15s;
}
.filter-select:focus { border-color: var(--primary); }

/* ============ Pagination ============ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.pagination-info { font-size: 13px; color: var(--text-muted); }
.pagination-controls { display: flex; gap: 6px; align-items: center; }
.page-btn {
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  transition: background 0.15s;
}
.page-btn:hover:not(:disabled) { background: var(--bg); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ============ Forms ============ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group.full { grid-column: 1 / -1; }

label { font-size: 13px; font-weight: 500; color: var(--text); }

.form-control {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }

textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control, select.input, select.filter-select { min-width: min-content; height: auto !important; line-height: 1.5; }

.form-hint { font-size: 11px; color: var(--text-muted); }
.form-error { font-size: 12px; color: var(--danger); }

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ============ Modal ============ */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

#modal-overlay.hidden { display: none; }

#modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.2s ease;
}

#modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#modal-title { font-size: 16px; font-weight: 600; }
#modal-close { width: 30px; height: 30px; font-size: 20px; color: var(--text-muted); }
#modal-close:hover { color: var(--text); }

#modal-body { padding: 20px; overflow-y: auto; }

/* ============ Toast ============ */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  min-width: 240px;
  animation: slideInRight 0.25s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.success { background: var(--success); }
.toast.error   { background: var(--danger); }
.toast.warning { background: var(--warning); }
.toast.fade-out { animation: fadeOut 0.3s ease forwards; }

/* ============ Empty State ============ */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.empty-state svg { opacity: 0.35; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ============ Loading ============ */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 14px;
}

/* ============ Category Cards ============ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  box-shadow: var(--shadow);
}

.cat-info { flex: 1; min-width: 0; }
.cat-name { font-weight: 600; font-size: 14px; truncate: ellipsis; white-space: nowrap; overflow: hidden; }
.cat-count { font-size: 12px; color: var(--text-muted); margin-top: 3px; }

/* ============ Tab Bar ============ */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 20px;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ============ View Mode Toggle ============ */
.view-toggle {
  display: flex;
  gap: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px;
  flex-shrink: 0;
}

.view-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
  background: transparent;
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}
.view-btn:hover { background: var(--border); color: var(--text); }
.view-btn.active { background: var(--primary); color: #fff; }

/* ============ Checkboxes ============ */
.row-check {
  width: 16px; height: 16px;
  cursor: pointer;
  accent-color: var(--primary);
}

tr.row-selected { background: var(--primary-light) !important; }

/* ============ List View (compact rows) ============ */
.list-table tbody .list-row td { padding: 8px 14px; }

/* ============ Icon / Grid View ============ */
.product-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 0;
}

.product-icon-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  position: relative;
}

.product-icon-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.product-icon-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.icon-card-check {
  position: absolute;
  top: 8px; left: 8px;
  z-index: 2;
}

.icon-card-img {
  height: 110px;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}

.icon-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.icon-card-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}

.icon-card-body {
  padding: 10px 12px 6px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.icon-card-name {
  font-weight: 600;
  font-size: 13px;
  line-height: 1.3;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.icon-card-meta {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 2px;
}

.icon-card-price-row {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-top: 4px;
}

.icon-card-pretax {
  font-size: 11px;
  color: var(--text-muted);
}

.icon-card-price {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
}

.icon-card-mfg {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 2px;
}

.icon-card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 2px;
  padding: 6px 8px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.02);
}

/* ============ Product Thumbnail ============ */
.product-thumb {
  object-fit: cover;
  border-radius: var(--radius-sm);
  display: block;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.product-thumb-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

/* ============ Image Upload Box ============ */
.img-upload-box {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.img-upload-preview {
  width: 100%;
  height: 140px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.img-upload-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.img-upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-light);
  font-size: 12px;
}

.img-upload-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* read-only tax field */
input[readonly].form-control {
  background: var(--bg);
  color: var(--primary);
  font-weight: 600;
  cursor: default;
}

/* ============ Bar Chart ============ */
.bar-chart { overflow-x: auto; }

/* ============ Animations ============ */
@keyframes fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(100%); } to { opacity: 1; transform: translateX(0); } }

/* ============ Bulk Action Bar ============ */
.bulk-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--primary-light);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.bulk-bar-count { font-size: 13px; font-weight: 500; color: var(--primary); flex: 1; min-width: 80px; }
.bulk-bar-btns { display: flex; gap: 6px; flex-wrap: wrap; }
@media (max-width: 480px) {
  .bulk-bar { gap: 8px; }
  .bulk-bar-count { width: 100%; flex: none; }
}

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

/* ── Tablet & Mobile shared ── */
@media (max-width: 768px) {
  #sidebar { transform: translateX(-100%); }
  #sidebar.open { transform: translateX(0); box-shadow: 4px 0 20px rgba(0,0,0,0.35); }
  #main-content { margin-left: 0; }
  .menu-btn { display: flex; }

  .view { padding: 12px; }
  .card-body { padding: 14px; }
  .card-header { padding: 12px 14px; flex-wrap: wrap; gap: 10px; }

  /* Tab bar */
  .tab-bar { overflow-x: auto; -webkit-overflow-scrolling: touch; flex-wrap: nowrap; scrollbar-width: none; }
  .tab-bar::-webkit-scrollbar { display: none; }
  .tab-btn { white-space: nowrap; flex-shrink: 0; padding: 9px 14px; }

  /* Toolbar */
  .toolbar { flex-direction: column; align-items: stretch; gap: 8px; }
  .toolbar .search-box { min-width: 0; width: 100%; }
  .toolbar .filter-select { width: 100%; }
  .toolbar > .btn { align-self: flex-start; }

  /* Topbar */
  .topbar { padding: 0 14px; gap: 10px; }
  .topbar h1 { font-size: 15px; }

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

  /* Form */
  .form-grid { grid-template-columns: 1fr; }

  /* Pagination */
  .pagination { flex-direction: column; gap: 8px; align-items: flex-start; }

  /* Modal: slide from bottom */
  #modal-overlay { padding: 0; align-items: flex-end; }
  #modal-box { max-width: 100% !important; max-height: 92vh; border-radius: 14px 14px 0 0; }
  #modal-header { padding: 14px 16px; }
  #modal-body { padding: 14px 16px; }

  /* Toast */
  #toast-container { left: 10px; right: 10px; bottom: 10px; }
  .toast { min-width: 0; width: 100%; }

  /* ── Mobile table → card list ──
     每列變成一張卡片，標籤靠左固定寬，值靠右 */
  .table-wrap { overflow-x: visible; }
  .table-wrap table { display: block; }
  .table-wrap thead { display: none; }
  .table-wrap tbody { display: flex; flex-direction: column; gap: 10px; }
  .table-wrap tbody tr {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 0;
    row-gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    overflow: hidden;
  }
  /* 每個 td 橫跨兩欄，內部用 grid 分左右 */
  .table-wrap tbody td {
    display: contents; /* 讓 ::before 與 td 內容各自成格 */
  }
  /* 改用 wrapper 方式，不用 display:contents */
  /* 重新定義：td 本身是 flex row */
  .table-wrap tbody tr { display: block; padding: 10px 14px; }
  .table-wrap tbody td {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 4px 0;
    border: none;
    text-align: left !important;
  }
  .table-wrap tbody td::before {
    content: attr(data-label);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    flex: 0 0 88px;   /* 固定寬度，中文最多4字+單位 */
    min-width: 88px;
  }
  /* td 內容靠右填滿剩餘空間 */
  .table-wrap tbody td > * { flex: 1; min-width: 0; }
  .table-wrap tbody td:empty,
  .table-wrap tbody td[data-label=""]:empty { display: none; }

  /* colspan td（如小計/合計列）隱藏 label，全寬顯示 */
  .table-wrap tbody td[colspan] {
    flex-direction: column;
    padding: 6px 0 2px;
    border-top: 1px dashed var(--border);
  }
  .table-wrap tbody td[colspan]::before { display: none; }

  /* 操作按鈕行 */
  .table-wrap tbody td:last-child .action-btns,
  .table-wrap tbody td[data-label="操作"] .action-btns,
  .table-wrap tbody td[data-label=""] .action-btns {
    justify-content: flex-end;
  }
  .table-wrap tbody td[data-label="操作"],
  .table-wrap tbody td[data-label=""] {
    border-top: 1px dashed var(--border);
    margin-top: 4px;
    padding-top: 8px;
  }
  .table-wrap tbody td[data-label="操作"]::before,
  .table-wrap tbody td[data-label=""]::before { display: none; }

  /* po-items-table（modal 內嵌表格）保持橫向捲動，不轉卡片 */
  .po-items-table,
  .modal-inner-table { display: table !important; width: 100%; }
  .po-items-table thead,
  .modal-inner-table thead { display: table-header-group !important; }
  .po-items-table tbody,
  .modal-inner-table tbody { display: table-row-group !important; }
  .po-items-table tr,
  .modal-inner-table tr { display: table-row !important; border: none !important; padding: 0 !important; background: none !important; }
  .po-items-table td,
  .modal-inner-table td { display: table-cell !important; padding: 8px 10px !important; text-align: left !important; }
  .po-items-table td::before,
  .modal-inner-table td::before { display: none !important; }

  .stat-chip { font-size: 12px; padding: 5px 10px; }
}

/* ── Small Mobile ── */
@media (max-width: 640px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .category-grid { grid-template-columns: 1fr 1fr; }
  .supplier-grid { grid-template-columns: 1fr; }
  .product-icon-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .view { padding: 10px; }

  /* Form actions */
  .form-actions { flex-direction: column-reverse; gap: 8px; }
  .form-actions .btn { width: 100%; justify-content: center; }

  /* Override inline grid columns from JS templates */
  div[style*="grid-template-columns:1fr 1fr"],
  div[style*="grid-template-columns: 1fr 1fr"],
  div[style*="grid-template-columns:3fr 2fr"],
  div[style*="grid-template-columns: 3fr 2fr"],
  div[style*="grid-template-columns:repeat(3,1fr)"],
  div[style*="grid-template-columns: repeat(3,1fr)"],
  div[style*="grid-template-columns:260px 1fr"],
  div[style*="grid-template-columns: 260px 1fr"] {
    grid-template-columns: 1fr !important;
  }

  /* Order item row */
  div[style*="grid-template-columns:2fr 80px 100px 28px"],
  div[style*="grid-template-columns: 2fr 80px 100px 28px"] {
    grid-template-columns: 1fr 64px 80px 28px !important;
    font-size: 13px;
  }
}

/* ── Extra Small ── */
@media (max-width: 480px) {
  :root { --topbar-h: 52px; }
  .topbar { padding: 0 10px; }
  .topbar h1 { font-size: 14px; }
  .view { padding: 8px; }
  .stats-grid { grid-template-columns: 1fr !important; }
  .category-grid { grid-template-columns: 1fr !important; }
  .product-icon-grid { grid-template-columns: 1fr 1fr !important; }
  .stat-value { font-size: 22px; }
  .card-body { padding: 12px; }
  .card-header { padding: 10px 12px; }
  .table-wrap tbody td::before { flex: 0 0 76px; min-width: 76px; font-size: 11px; }
}

/* ============ Overlay for mobile menu ============ */
#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 99;
}
#sidebar-overlay.visible { display: block; }

/* ============ PO Status Badges ============ */
.badge-draft      { background: #f1f5f9; color: #64748b; }
.badge-confirmed  { background: var(--primary-light); color: var(--primary); }
.badge-received   { background: var(--success-light); color: #065f46; }
.badge-cancelled  { background: var(--danger-light); color: #991b1b; }
.badge-purple     { background: #f3e8ff; color: #7e22ce; }
.badge-inv-type   { background: #e0f2fe; color: #0369a1; font-weight: 500; }
.badge-warning-custom    { background: var(--warning-light); color: #92400e; }
.badge-primary-custom    { background: #dbeafe; color: #1d4ed8; }

/* ============ Stat Chip ============ */
.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
}
.stat-chip strong {
  font-size: 16px;
  font-weight: 700;
  color: var(--chip-color, var(--text));
}

/* ============ Modal Large ============ */
.modal-lg { max-width: 780px !important; }

/* ============ Product Modal Tabs ============ */
.prod-modal-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin: -20px -20px 20px;
  padding: 0 20px;
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
}
.prod-modal-tabs::-webkit-scrollbar { display: none; }
.prod-modal-tab {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  cursor: pointer;
  background: none;
  transition: color 0.15s;
}
.prod-modal-tab:hover { color: var(--text); }
.prod-modal-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.prod-modal-section { display: none; }
.prod-modal-section.active { display: block; }

/* ============ Product Form Responsive Grid ============ */
.prod-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
}
.prod-form-grid .full-width { grid-column: 1 / -1; }
@media (max-width: 540px) {
  .prod-form-grid { grid-template-columns: 1fr; }
  .prod-form-grid .full-width { grid-column: 1; }
}

/* ============ PO Items Table ============ */
.po-items-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.po-items-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 380px; }
.po-items-table th { padding: 8px 12px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); border-bottom: 2px solid var(--border); text-align: left; white-space: nowrap; }
.po-items-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.po-items-table tfoot td { border-bottom: none; border-top: 2px solid var(--border); }
.po-items-table tbody tr:last-child td { border-bottom: none; }

/* ============ Supplier Cards ============ */
.supplier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.supplier-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  transition: box-shadow 0.15s;
}

.supplier-card:hover { box-shadow: var(--shadow-md); }

.supplier-card-body { flex: 1; min-width: 0; }

.supplier-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.supplier-meta {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.supplier-po-count { margin-top: 10px; }

.supplier-card-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

/* ============ Analytics ============ */
.analytics-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  overflow: hidden;
}
@media (max-width: 700px) {
  .analytics-card { min-width: 0; }
}

/* ============ Dashboard v2 ============ */
.dash-kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  transition: box-shadow 0.15s, transform 0.15s;
  border-top: 3px solid var(--kpi-color, var(--primary));
}
.dash-kpi-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); transform: translateY(-1px); }

.dash-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  overflow: hidden;
}
.dash-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.dash-card-title { font-size: 14px; font-weight: 600; }

.dash-action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  color: var(--text);
}
.dash-action-btn:hover {
  background: var(--act-color, var(--primary));
  border-color: var(--act-color, var(--primary));
  color: #fff;
}

@media (max-width: 900px) {
  .dash-card { overflow-x: auto; }
}
@media (max-width: 640px) {
  #dashboard-content > div[style*="grid-template-columns:1fr 1fr"],
  #dashboard-content > div[style*="grid-template-columns:3fr 2fr"] {
    grid-template-columns: 1fr !important;
  }
}

/* ============ Viewer Mode ============ */
/* 純 CSS 結構選擇器，不依賴 JS 掃描文字，無閃爍 */

/* card-header 中的按鈕（新增、編輯、刪除等操作按鈕）*/
body.viewer-mode .card-header button:not(.tab-btn):not(.icon-btn[data-exempt]),
body.viewer-mode .card-header .btn,
body.viewer-mode .card-header a.btn {
  display: none !important;
}

/* 表格 td 中的按鈕（列操作：編輯、刪除等）*/
body.viewer-mode td button,
body.viewer-mode td .icon-btn,
body.viewer-mode td .btn-sm,
body.viewer-mode td a.btn {
  display: none !important;
}

/* 其他常見的操作區塊（如頁面底部操作列）*/
body.viewer-mode [data-require-edit],
body.viewer-mode .btn-edit,
body.viewer-mode .btn-delete,
body.viewer-mode .btn-add {
  display: none !important;
}