:root {
  --sidebar-width: 240px;
}

* { box-sizing: border-box; }

body { font-family: 'Inter', system-ui, sans-serif; }

/* Sidebar */
#sidebar {
  width: var(--sidebar-width);
  transition: transform 0.25s ease;
}

#sidebar.collapsed {
  transform: translateX(calc(-1 * var(--sidebar-width)));
}

#main-content {
  margin-left: var(--sidebar-width);
  transition: margin-left 0.25s ease;
  min-height: 100vh;
}

#main-content.expanded {
  margin-left: 0;
}

@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    z-index: 50;
    transform: translateX(calc(-1 * var(--sidebar-width)));
  }
  #sidebar.mobile-open {
    transform: translateX(0);
  }
  #main-content {
    margin-left: 0;
  }
  #sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 40;
  }
  #sidebar-overlay.visible {
    display: block;
  }
}

/* Nav items */
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border-radius: 8px;
  cursor: pointer;
  color: #94a3b8;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
}

.nav-item:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}

.nav-item.active {
  background: #2563eb;
  color: #fff;
}

/* Toast */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s ease;
  pointer-events: auto;
  max-width: 320px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast.success { background: #10b981; color: #fff; }
.toast.error   { background: #ef4444; color: #fff; }
.toast.info    { background: #3b82f6; color: #fff; }

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th {
  text-align: left;
  padding: 10px 14px;
  background: #f8fafc;
  color: #64748b;
  font-weight: 600;
  border-bottom: 1px solid #e2e8f0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
}

.data-table tr:hover td {
  background: #f8fafc;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-box {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-green  { background: #dcfce7; color: #16a34a; }
.badge-red    { background: #fee2e2; color: #dc2626; }
.badge-yellow { background: #fef9c3; color: #ca8a04; }
.badge-blue   { background: #dbeafe; color: #2563eb; }
.badge-gray   { background: #f1f5f9; color: #64748b; }
.badge-purple { background: #ede9fe; color: #7c3aed; }

/* Stat card */
.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 20px 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  border: 1px solid #e2e8f0;
}

/* Form */
.form-input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  color: #1e293b;
  transition: border-color 0.15s;
  outline: none;
}

.form-input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

label.form-label {
  font-size: 13px;
  font-weight: 600;
  color: #374151;
  display: block;
  margin-bottom: 4px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 99px; }

/* Search input */
.search-box {
  padding: 8px 12px 8px 36px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  width: 240px;
  transition: border-color 0.15s;
}

.search-box:focus {
  border-color: #2563eb;
}

/* Low stock row */
.low-stock {
  background: #fff7ed !important;
}

/* ── WMS Design System ────────────────────────────────────────────────────── */

/* WMS shared variables */
:root {
  --wms-accent: #2490EF;
  --wms-accent-hover: #1a6ec7;
  --wms-accent-soft: #e8f4fe;
  --wms-green: #2DB546;
  --wms-green-soft: #e6f8e9;
  --wms-orange: #E97316;
  --wms-orange-soft: #fff3e6;
  --wms-red: #E74C3C;
  --wms-red-soft: #fdf0ef;
  --wms-gray-50: #F7F8FA;
  --wms-gray-100: #EEF0F4;
  --wms-gray-200: #DDE1E9;
  --wms-gray-400: #9BA3B0;
  --wms-gray-600: #5A6272;
  --wms-gray-700: #3D4452;
  --wms-gray-800: #2D3340;
  --wms-radius: 6px;
  --wms-font: 'DM Mono', 'Courier New', monospace;
}

/* WMS pills */
.wms-pill {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 10px; font-size: 10px;
  font-weight: 700; text-transform: uppercase; letter-spacing: .3px;
}
.wms-pill.green  { background: var(--wms-green-soft);  color: #1a8032; }
.wms-pill.orange { background: var(--wms-orange-soft); color: #b05a0e; }
.wms-pill.red    { background: var(--wms-red-soft);    color: #b0372a; }
.wms-pill.blue   { background: var(--wms-accent-soft); color: var(--wms-accent-hover); }
.wms-pill.gray   { background: var(--wms-gray-100);    color: var(--wms-gray-600); }

/* WMS progress bar */
.wms-progress-bar  { height: 6px; background: var(--wms-gray-100);
                     border-radius: 3px; overflow: hidden; }
.wms-progress-fill { height: 100%; border-radius: 3px; transition: width .4s; }

/* WMS table */
.wms-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.wms-table thead th {
  padding: 8px 12px; text-align: left; font-size: 10px;
  text-transform: uppercase; letter-spacing: .5px;
  color: var(--wms-gray-400); background: var(--wms-gray-50);
  border-bottom: 1px solid var(--wms-gray-200); font-weight: 600;
}
.wms-table tbody tr {
  border-bottom: 1px solid var(--wms-gray-100);
  transition: background .1s; cursor: pointer;
}
.wms-table tbody tr:last-child { border-bottom: none; }
.wms-table tbody tr:hover { background: var(--wms-gray-50); }
.wms-table tbody td { padding: 9px 12px; color: var(--wms-gray-700); }

/* WMS card */
.wms-card {
  background: #fff; border: 1px solid var(--wms-gray-200);
  border-radius: var(--wms-radius);
}
.wms-card-header {
  padding: 12px 16px; border-bottom: 1px solid var(--wms-gray-100);
  display: flex; align-items: center; justify-content: space-between;
}
.wms-card-title {
  font-size: 12px; font-weight: 700; color: var(--wms-gray-800);
  display: flex; align-items: center; gap: 6px;
}

/* WMS filter buttons */
.wms-filter-row { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.wms-filter-btn {
  padding: 4px 10px; border-radius: 12px;
  border: 1px solid var(--wms-gray-200); background: #fff;
  cursor: pointer; font-size: 11px; color: var(--wms-gray-600);
  transition: all .12s;
}
.wms-filter-btn:hover,
.wms-filter-btn.active {
  background: var(--wms-accent-soft);
  color: var(--wms-accent); border-color: var(--wms-accent);
}

/* WMS search bar */
.wms-search-bar {
  display: flex; align-items: center; gap: 8px;
  background: var(--wms-gray-50); border: 1px solid var(--wms-gray-200);
  border-radius: var(--wms-radius); padding: 6px 12px; margin-bottom: 12px;
}
.wms-search-bar input {
  flex: 1; border: none; background: none;
  font-size: 12px; color: var(--wms-gray-800); outline: none;
}

/* WMS detail panel */
.wms-detail-panel {
  background: #fff; border: 1px solid var(--wms-gray-200);
  border-radius: var(--wms-radius); padding: 16px;
  margin-top: 12px; display: none;
}
.wms-detail-panel.open { display: block; }
.wms-detail-row { display: flex; gap: 8px; margin-bottom: 10px; }
.wms-detail-key {
  font-size: 11px; color: var(--wms-gray-400);
  width: 120px; flex-shrink: 0; padding-top: 2px;
}
.wms-detail-val { font-size: 12px; color: var(--wms-gray-800); font-weight: 600; }

/* WMS mono */
.wms-mono { font-family: var(--wms-font); font-size: 11px; }

/* WMS alert row */
.wms-alert-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--wms-gray-100);
  cursor: pointer;
}
.wms-alert-row:hover { background: var(--wms-gray-50); }
.wms-alert-row:last-child { border-bottom: none; }
.wms-alert-icon {
  width: 28px; height: 28px; border-radius: var(--wms-radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0;
}
.wms-alert-text { flex: 1; }
.wms-alert-text strong { display: block; font-size: 12px; color: var(--wms-gray-800); }
.wms-alert-text span  { font-size: 11px; color: var(--wms-gray-400); }
.wms-alert-time { font-size: 10px; color: var(--wms-gray-400); }

/* WMS loc grid (Bin Map) */
.wms-loc-grid {
  display: grid; grid-template-columns: repeat(8, 1fr);
  gap: 4px; padding: 14px;
}
.wms-loc-cell {
  aspect-ratio: 1; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 700; cursor: pointer;
  transition: transform .1s; color: #fff;
}
.wms-loc-cell:hover    { transform: scale(1.1); }
.wms-loc-cell.full     { background: #2DB546; }
.wms-loc-cell.partial  { background: #E97316; }
.wms-loc-cell.empty    { background: var(--wms-gray-100); color: var(--wms-gray-400); }
.wms-loc-cell.reserved { background: #2490EF; }
.wms-loc-cell.blocked  { background: var(--wms-red); }

/* WMS FEFO row */
.wms-fefo-row {
  padding: 10px 14px; border-bottom: 1px solid var(--wms-gray-100);
  display: flex; align-items: center; gap: 10px;
}
.wms-fefo-row:last-child { border-bottom: none; }
.wms-exp-bar-wrap { flex: 1; }
.wms-exp-label {
  font-size: 10px; color: var(--wms-gray-400); margin-bottom: 3px;
  display: flex; justify-content: space-between;
}

/* WMS KPI */
.wms-kpi-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px; margin-bottom: 16px;
}
.wms-kpi {
  background: #fff; border: 1px solid var(--wms-gray-200);
  border-radius: var(--wms-radius); padding: 14px 16px; cursor: pointer;
}
.wms-kpi-label {
  font-size: 10px; color: var(--wms-gray-400); letter-spacing: .4px;
  text-transform: uppercase; margin-bottom: 6px;
  display: flex; align-items: center; gap: 6px;
}
.wms-kpi-value { font-size: 22px; font-weight: 700; color: var(--wms-gray-800); }
.wms-kpi-change { font-size: 11px; margin-top: 4px; }
.wms-kpi-change.up   { color: var(--wms-green); }
.wms-kpi-change.down { color: var(--wms-red); }
.wms-kpi-icon {
  margin-left: auto; width: 30px; height: 30px;
  border-radius: var(--wms-radius);
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}

/* WMS dot */
.wms-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.wms-dot.green  { background: var(--wms-green); }
.wms-dot.orange { background: var(--wms-orange); }
.wms-dot.red    { background: var(--wms-red); }

/* WMS scroll x */
.wms-scroll-x { overflow-x: auto; }

/* WMS chart wrap */
.wms-chart-wrap { position: relative; height: 160px; padding: 8px 14px 14px; }

/* WMS timeline */
.wms-tl-item { display: flex; gap: 10px; margin-bottom: 12px; }
.wms-tl-dot  { width: 8px; height: 8px; border-radius: 50%;
               margin-top: 4px; flex-shrink: 0; }
.wms-tl-content { font-size: 12px; }
.wms-tl-content strong { color: var(--wms-gray-800); }
.wms-tl-content span   { color: var(--wms-gray-400); font-size: 11px;
                          display: block; margin-top: 1px; }

/* WMS nav section label */
.wms-nav-section {
  font-size: 9px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .8px; color: #475569;
  padding: 16px 14px 4px;
}
.wms-nav-badge {
  margin-left: auto; font-size: 9px; font-weight: 700;
  padding: 1px 5px; border-radius: 8px;
}

/* ── Sidebar items (data-route pattern) ─────────────────────────────────── */
.sidebar-section { padding-top: 12px; }
.sidebar-label {
  font-size: 9px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .8px; color: #475569;
  padding: 4px 14px 4px; display: block;
}
.sidebar-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
  color: #94a3b8; font-size: 13px; font-weight: 500;
  transition: background .15s, color .15s; user-select: none;
}
.sidebar-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-item.active { background: #2563eb; color: #fff; }
.sidebar-item .count {
  margin-left: auto; font-size: 9px; font-weight: 700;
  padding: 1px 6px; border-radius: 8px;
  background: rgba(255,255,255,.15); color: #fff;
}

/* ── Page layout utilities ──────────────────────────────────────────────── */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 16px;
}
.page-title {
  font-size: 18px; font-weight: 700; color: var(--wms-gray-800); margin: 0 0 3px;
}
.page-sub { font-size: 11px; color: var(--wms-gray-400); margin: 0; }
.btn {
  padding: 7px 14px; border-radius: var(--wms-radius);
  font-size: 11px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; display: inline-flex;
  align-items: center; gap: 5px; transition: opacity .15s; text-decoration: none;
}
.btn:hover { opacity: .88; }
.btn-primary { background: var(--wms-accent); color: #fff; border-color: var(--wms-accent); }
.btn-secondary { background: #fff; color: var(--wms-gray-700); border-color: var(--wms-gray-200); }