:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --sidebar: #142033;
  --sidebar-text: #cbd5e1;
  --text: #17233b;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --success: #059669;
  --warning: #d97706;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app {
  display: grid;
  grid-template-columns: 232px 1fr;
  min-height: 100vh;
}

.auth-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 20% 15%, #e8f0ff 0, #f4f6fb 45%, #eef2f8 100%);
  padding: 24px;
}

.auth-card {
  width: 420px;
  max-width: 100%;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(18px);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.auth-brand .brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
}

.auth-brand strong {
  display: block;
  font-size: 17px;
}

.auth-brand span {
  color: var(--muted);
  font-size: 12px;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  background: #e9eef7;
  padding: 5px;
  border-radius: 11px;
}

.auth-tab {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 8px;
  padding: 9px;
}

.auth-tab.active {
  background: #fff;
  color: var(--text);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

.auth-form {
  display: none;
  flex-direction: column;
  gap: 8px;
}

.auth-form.active {
  display: flex;
}

.auth-form label {
  margin-top: 6px;
  color: #475569;
}

.auth-form input {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
}

.auth-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.auth-submit {
  margin-top: 12px;
  padding: 11px;
}

.auth-error {
  min-height: 20px;
  margin-top: 12px;
  color: var(--danger);
  font-size: 13px;
  text-align: center;
}

.sidebar {
  background: var(--sidebar);
  color: var(--sidebar-text);
  padding: 22px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px;
  color: #fff;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 700;
}

.brand strong {
  display: block;
  font-size: 16px;
}

.brand span {
  display: block;
  font-size: 11px;
  color: #94a3b8;
  letter-spacing: 1px;
}

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

.nav-item {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--sidebar-text);
  padding: 11px 12px;
  border-radius: 10px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  transition: background 0.2s, color 0.2s;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
}

.nav-item.active {
  background: rgba(59, 130, 246, 0.25);
  color: #fff;
  font-weight: 600;
}

.sidebar-footer {
  margin-top: auto;
}

.user-panel {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e2e8f0;
  padding: 10px 8px;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.06);
  margin-bottom: 10px;
}

.user-avatar {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(59, 130, 246, 0.25);
  color: #fff;
  font-weight: 700;
}

.user-panel strong,
.user-panel span {
  display: block;
  line-height: 1.2;
}

.user-panel strong {
  font-size: 13px;
}

.user-panel span {
  color: #94a3b8;
  font-size: 11px;
}

.icon-btn.small {
  width: 28px;
  height: 28px;
  margin-left: auto;
  font-size: 18px;
}

.ghost-btn {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: transparent;
  color: #cbd5e1;
  border-radius: 9px;
  padding: 9px;
}

.ghost-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.main {
  min-width: 0;
  padding: 28px 34px 40px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 24px;
}

.topbar h1 {
  margin: 0 0 4px;
  font-size: 26px;
}

.topbar p {
  margin: 0;
  color: var(--muted);
}

.topbar-actions,
.toolbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.primary-btn,
.secondary-btn,
.danger-btn,
.link-btn,
.icon-btn {
  border: 0;
  border-radius: 9px;
  padding: 9px 14px;
  font-size: 14px;
  transition: transform 0.1s, background 0.2s, border-color 0.2s;
}

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

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

.primary-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

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

.secondary-btn:hover {
  border-color: #cbd5e1;
  background: #f8fafc;
}

.danger-btn {
  background: var(--danger);
  color: #fff;
}

.link-btn {
  background: transparent;
  color: var(--primary);
  padding: 0;
}

.icon-btn {
  background: #f1f5f9;
  color: #334155;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 22px;
  line-height: 1;
}

.view {
  display: none;
}

.view.active {
  display: block;
  animation: fade 0.18s ease;
}

@keyframes fade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.stat-card .label {
  color: var(--muted);
  font-size: 13px;
}

.stat-card .value {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 700;
}

.stat-card .hint {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.panel-row {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.panel.grow {
  min-width: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.panel-header h2 {
  margin: 0;
  font-size: 17px;
}

.panel-header p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.quick-actions button {
  border: 1px solid var(--border);
  background: #f8fafc;
  border-radius: 10px;
  padding: 14px 10px;
  font-weight: 600;
}

.quick-actions button:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #eff6ff;
}

.recent-list {
  display: flex;
  flex-direction: column;
}

.recent-item {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
}

.recent-item:last-child {
  border-bottom: 0;
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 32px 10px;
  font-size: 14px;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

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

.input {
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 9px 11px;
  background: #fff;
  color: var(--text);
  min-width: 0;
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.select {
  min-width: 150px;
}

.check {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.table-panel {
  padding: 0;
  overflow: hidden;
}

.table-panel .panel-header {
  padding: 16px 18px 0;
  margin-bottom: 12px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid #f1f5f9;
  white-space: nowrap;
}

th {
  background: #f8fafc;
  color: #475569;
  font-weight: 600;
  font-size: 13px;
}

tbody tr:hover {
  background: #f8fafc;
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.badge {
  display: inline-block;
  border-radius: 20px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge.inbound,
.badge.initial {
  background: #ecfdf5;
  color: #047857;
}

.badge.outbound {
  background: #fef2f2;
  color: #b91c1c;
}

.badge.transfer {
  background: #eff6ff;
  color: #1d4ed8;
}

.badge.adjustment {
  background: #fffbeb;
  color: #b45309;
}

.badge.low {
  background: #fff7ed;
  color: #c2410c;
}

.badge.out {
  background: #fef2f2;
  color: #b91c1c;
}

.badge.normal {
  background: #ecfdf5;
  color: #047857;
}

.row-actions {
  display: flex;
  gap: 7px;
}

.mini-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: #475569;
  border-radius: 7px;
  padding: 5px 8px;
  font-size: 12px;
}

.mini-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.mini-btn.danger:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 18px;
  border-top: 1px solid #f1f5f9;
}

.page-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  color: var(--text);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  background: #e9eef7;
  width: fit-content;
  padding: 5px;
  border-radius: 11px;
}

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 8px;
  padding: 9px 18px;
}

.tab.active {
  background: #fff;
  color: var(--text);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

.op-form {
  display: none;
  max-width: 760px;
}

.op-form.active {
  display: block;
}

.form-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 13px 16px;
  align-items: start;
}

.form-grid label {
  padding-top: 9px;
  color: #475569;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 9px 11px;
  background: #fff;
  color: var(--text);
}

.form-grid textarea {
  resize: vertical;
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.required {
  color: var(--danger);
}

.warehouse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.warehouse-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  background: #f8fafc;
}

.warehouse-card h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.warehouse-card .code {
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}

.warehouse-card .metrics {
  display: flex;
  justify-content: space-between;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.warehouse-card .metrics strong {
  display: block;
  color: var(--text);
  font-size: 18px;
}

dialog {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  max-width: calc(100vw - 28px);
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
}

.dialog-box {
  background: #fff;
  border-radius: 16px;
  width: 620px;
  max-width: 100%;
  max-height: 90vh;
  overflow: auto;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.25);
}

.dialog-box.wide {
  width: 820px;
}

.dialog-box.confirm-box {
  width: 420px;
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 0;
}

.dialog-header h2 {
  margin: 0;
  font-size: 19px;
}

.dialog-body {
  padding: 18px 20px;
}

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 0 20px 20px;
}

.import-help {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 14px;
  font-size: 13px;
  color: #475569;
}

.import-help p {
  margin: 4px 0;
}

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 2px dashed #cbd5e1;
  border-radius: 12px;
  padding: 24px;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: 14px;
  transition: border-color 0.2s, background 0.2s;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--primary);
  background: #eff6ff;
}

.drop-zone input {
  display: none;
}

.drop-zone strong {
  color: var(--text);
}

.field-label {
  display: block;
  margin-bottom: 8px;
  color: #475569;
}

#batchPaste {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  resize: vertical;
}

.import-options {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin: 14px 0;
}

.batch-preview {
  border: 1px solid var(--border);
  border-radius: 10px;
  max-height: 240px;
  overflow: auto;
}

.batch-preview table {
  font-size: 13px;
}

.batch-result {
  margin-top: 12px;
  font-size: 14px;
}

.batch-result .success {
  color: var(--success);
}

.batch-result .error {
  color: var(--danger);
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100;
  background: #17233b;
  color: #fff;
  padding: 12px 16px;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.25);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}

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

@media (max-width: 1100px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 760px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav {
    flex-direction: row;
    overflow-x: auto;
  }

  .nav-item {
    width: auto;
    white-space: nowrap;
  }

  .main {
    padding: 18px 14px 30px;
  }

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

  .panel-row {
    grid-template-columns: 1fr;
  }

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

  .form-grid label {
    padding-top: 0;
    margin-bottom: -8px;
  }

  .dialog-box,
  .dialog-box.wide {
    width: 100%;
  }
}