:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
}

body {
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  cursor: pointer;
}

.app-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 16px 32px;
}

.app-header {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: #fff;
  border-radius: 20px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.header-title h1 {
  margin: 0;
  font-size: 26px;
}

.header-title p {
  margin: 8px 0 0;
  opacity: 0.92;
  font-size: 14px;
}

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

.main-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.nav-link {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

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

.user-chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 13px;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 11px 16px;
  font-weight: 700;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

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

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

.btn-secondary {
  background: #e2e8f0;
  color: var(--text);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

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

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

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

.btn-ghost-white {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
}

.btn-sm {
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 13px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

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

.stats-card .value {
  font-size: 32px;
  font-weight: 800;
  margin-top: 8px;
  color: var(--primary);
}

.section {
  margin-top: 18px;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.section-title h2,
.section-title h3 {
  margin: 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group.full {
  grid-column: 1 / -1;
}

.label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 700;
}

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

.input,
.select,
.textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 13px;
  background: #fff;
  color: var(--text);
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.textarea {
  min-height: 110px;
  resize: vertical;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.toolbar .input,
.toolbar .select {
  max-width: 240px;
}

.filter-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-tab {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--muted);
  font-weight: 600;
}

.filter-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

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

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 14px;
  vertical-align: top;
}

.table th {
  color: var(--muted);
  font-weight: 700;
  white-space: nowrap;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
}

.badge-primary {
  background: #dbeafe;
  color: #1d4ed8;
}

.badge-success {
  background: #dcfce7;
  color: #166534;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-danger {
  background: #fee2e2;
  color: #991b1b;
}

.badge-muted {
  background: #e2e8f0;
  color: #475569;
}

.notice {
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 14px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.notice-warning {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
}

.notice-info {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1d4ed8;
}

.empty {
  padding: 32px 20px;
  text-align: center;
  color: var(--muted);
}

.order-card,
.customer-card,
.product-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  background: #fff;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.split {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: flex-start;
}

.muted {
  color: var(--muted);
}

.mono {
  font-family: ui-monospace, 'SFMono-Regular', Consolas, monospace;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.hidden {
  display: none !important;
}

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: radial-gradient(circle at top, rgba(37, 99, 235, 0.18), transparent 35%), var(--bg);
}

.login-card {
  width: 100%;
  max-width: 440px;
  background: #fff;
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.login-card p {
  margin: 0 0 20px;
  color: var(--muted);
}

.toast-wrap {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  min-width: 220px;
  max-width: 360px;
  background: #0f172a;
  color: #fff;
  padding: 12px 14px;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1300;
}

.modal {
  width: 100%;
  max-width: 460px;
  background: #fff;
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 22px;
}

.modal h3 {
  margin: 0 0 8px;
}

.modal p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.detail-item {
  padding: 12px;
  border-radius: 12px;
  background: #f8fafc;
}

.detail-item .k {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.detail-item .v {
  font-size: 14px;
  font-weight: 700;
}

@media (max-width: 900px) {
  .grid-3,
  .grid-2,
  .form-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 14px 12px 28px;
  }

  .app-header {
    padding: 18px;
    border-radius: 18px;
  }

  .header-title h1 {
    font-size: 22px;
  }

  .login-card {
    padding: 22px;
    border-radius: 20px;
  }
}