/* ===== CSS Variables ===== */
:root {
  --primary: #1677ff;
  --primary-hover: #0958d9;
  --primary-light: #e6f4ff;
  --success: #52c41a;
  --success-light: #f6ffed;
  --warning: #faad14;
  --warning-light: #fffbe6;
  --danger: #ff4d4f;
  --danger-light: #fff2f0;
  --text: #1f1f1f;
  --text-secondary: #8c8c8c;
  --text-tertiary: #bfbfbf;
  --border: #f0f0f0;
  --border-strong: #d9d9d9;
  --bg: #f5f5f5;
  --bg-white: #ffffff;
  --sidebar-bg: #001529;
  --sidebar-hover: #ffffff1a;
  --sidebar-active: #1677ff;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 6px 16px rgba(0,0,0,0.08);
  --radius: 8px;
  --radius-sm: 6px;
  --radius-lg: 12px;
}

/* ===== Reset ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; cursor: pointer; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }
input, select, textarea { font-family: inherit; font-size: 14px; outline: none; }
ul, ol { list-style: none; }

/* ===== Layout ===== */
#app {
  display: flex;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  width: 220px;
  background: var(--sidebar-bg);
  color: #ffffffd9;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}
.sidebar-header {
  padding: 20px 16px;
  border-bottom: 1px solid #ffffff1a;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}
.logo-icon { font-size: 24px; }
.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
  font-size: 14px;
  transition: all 0.2s;
  position: relative;
}
.nav-item:hover { background: var(--sidebar-hover); }
.nav-item.active { background: var(--sidebar-active); color: #fff; }
.nav-icon { font-size: 16px; width: 20px; text-align: center; }
.nav-badge {
  position: absolute;
  right: 12px;
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}
.sidebar-footer { padding: 16px; }

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  margin-left: 220px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Topbar ===== */
.topbar {
  height: 56px;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.menu-toggle {
  display: none;
  font-size: 20px;
  background: none;
  color: var(--text);
}
.page-title { font-size: 18px; font-weight: 600; }
.topbar-date { color: var(--text-secondary); font-size: 13px; }

/* ===== Page Content ===== */
.page-content { padding: 24px; flex: 1; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #389e0d; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #d9363e; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-default { background: var(--bg-white); color: var(--text); border: 1px solid var(--border-strong); }
.btn-default:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 4px 12px; font-size: 13px; }
.btn-lg { padding: 10px 24px; font-size: 15px; }
.btn-block { width: 100%; }
.btn-text { background: none; color: var(--primary); padding: 2px 6px; }
.btn-text:hover { background: var(--primary-light); }
.btn-text.danger { color: var(--danger); }
.btn-text.danger:hover { background: var(--danger-light); }

/* ===== Cards ===== */
.card {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.card-title { font-size: 16px; font-weight: 600; }

/* ===== Stats Grid ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.stat-icon.blue { background: var(--primary-light); }
.stat-icon.green { background: var(--success-light); }
.stat-icon.orange { background: var(--warning-light); }
.stat-icon.red { background: var(--danger-light); }
.stat-info { flex: 1; min-width: 0; }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-bottom: 4px; }
.stat-value { font-size: 24px; font-weight: 700; color: var(--text); }
.stat-sub { font-size: 12px; color: var(--text-tertiary); margin-top: 2px; }

/* ===== Tables ===== */
.table-wrap { overflow-x: auto; }
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table th {
  text-align: left;
  padding: 12px 16px;
  background: #fafafa;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.data-table tr:hover td { background: #fafbfc; }
.data-table .text-right { text-align: right; }
.data-table .text-center { text-align: center; }

/* ===== Forms ===== */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}
.form-label .required { color: var(--danger); }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: border-color 0.2s;
  background: #fff;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-hint { font-size: 12px; color: var(--text-tertiary); margin-top: 4px; }

/* ===== Search Bar ===== */
.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.search-input {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E") 10px center no-repeat;
}
.search-input:focus { border-color: var(--primary); }

/* ===== Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-default { background: #f5f5f5; color: var(--text-secondary); }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 60px;
}
.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}
.modal.wide { max-width: 900px; }
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
  background: none;
  font-size: 18px;
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 4px;
}
.modal-close:hover { background: #f5f5f5; }
.modal-body {
  padding: 24px;
  overflow-y: auto;
}
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
}
.toast {
  background: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 12px 20px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 240px;
  animation: slideIn 0.3s ease;
  border-left: 4px solid var(--primary);
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ===== Billing Page ===== */
.billing-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 16px;
  align-items: start;
}
.billing-left, .billing-right {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.billing-customer {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: center;
}
.billing-customer input { flex: 1; }
.customer-search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  z-index: 10;
  display: none;
}
.customer-search-results.show { display: block; }
.product-search-box {
  position: relative;
  margin-bottom: 16px;
}
.product-search-box input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.product-search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  z-index: 10;
  display: none;
}
.product-search-results.show { display: block; }
.search-result-item {
  padding: 10px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.search-result-item:hover { background: var(--primary-light); }
.search-result-item:last-child { border-bottom: none; }

/* Cart */
.cart-table { width: 100%; font-size: 13px; }
.cart-table th { padding: 8px; font-size: 12px; color: var(--text-secondary); }
.cart-table td { padding: 8px; border-bottom: 1px solid var(--border); }
.qty-input {
  width: 60px;
  padding: 4px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  text-align: center;
}
.price-input {
  width: 80px;
  padding: 4px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  text-align: right;
}
.cart-summary {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px solid var(--border);
}
.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
}
.summary-row.total {
  font-size: 18px;
  font-weight: 700;
  color: var(--danger);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.payment-section {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px solid var(--border);
}
.payment-input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}
.payment-input-group .form-input { flex: 1; }
.quick-pay-btns { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.quick-pay-btn {
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 13px;
  cursor: pointer;
}
.quick-pay-btn:hover { border-color: var(--primary); color: var(--primary); }
.quick-pay-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-tertiary);
}
.empty-state-icon { font-size: 48px; margin-bottom: 12px; }

/* ===== Print Styles ===== */
@media print {
  body * { visibility: hidden; }
  #printContainer, #printContainer * { visibility: visible; }
  #printContainer {
    display: block !important;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
  }
  .sidebar, .topbar { display: none !important; }
}
.receipt {
  width: 80mm;
  padding: 10px;
  font-family: "Courier New", monospace;
  font-size: 12px;
  color: #000;
}
.receipt h2 { text-align: center; font-size: 16px; margin-bottom: 4px; }
.receipt-info { margin-bottom: 8px; border-bottom: 1px dashed #999; padding-bottom: 8px; }
.receipt-info p { margin: 2px 0; font-size: 12px; }
.receipt-table { width: 100%; border-collapse: collapse; margin: 8px 0; }
.receipt-table th { border-bottom: 1px solid #000; padding: 4px 2px; font-size: 11px; text-align: left; }
.receipt-table td { padding: 3px 2px; font-size: 11px; }
.receipt-total {
  border-top: 1px dashed #999;
  padding-top: 8px;
  margin-top: 8px;
}
.receipt-total p { display: flex; justify-content: space-between; margin: 2px 0; }
.receipt-footer { text-align: center; margin-top: 12px; font-size: 11px; color: #666; }

/* ===== Color/Size Picker ===== */
.picker-btn {
  padding: 6px 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 48px;
}
.picker-btn:hover { border-color: var(--primary); color: var(--primary); }
.picker-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  font-weight: 600;
}

/* Multi-select picker toggle buttons */
.picker-toggle {
  padding: 5px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}
.picker-toggle:hover { border-color: var(--primary); color: var(--primary); }
.picker-toggle.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(22,119,255,0.3);
}

/* Quantity matrix table */
.qty-matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.qty-matrix-table th {
  background: var(--bg-tertiary);
  padding: 6px 8px;
  text-align: center;
  font-weight: 600;
  border: 1px solid var(--border-light);
  white-space: nowrap;
  font-size: 12px;
}
.qty-matrix-table td {
  padding: 4px 8px;
  border: 1px solid var(--border-light);
  text-align: center;
}
.qty-matrix-table .qty-row-label {
  font-weight: 600;
  text-align: left;
  background: var(--bg-secondary);
  white-space: nowrap;
}
.qty-matrix-table .qty-subtotal {
  font-weight: 600;
  color: var(--danger);
  background: var(--bg-secondary);
}
.qty-matrix-table input.qty-cell {
  border: 1px solid var(--border-light);
  border-radius: 3px;
  font-size: 13px;
  outline: none;
}
.qty-matrix-table input.qty-cell:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(22,119,255,0.1);
}

/* Sidebar backdrop (mobile) */
.sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 199;
}
.sidebar-backdrop.show { display: block; }

/* ===== Exchange ===== */
.exchange-page {
  max-width: 1200px;
  margin: 0 auto;
}

.exchange-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.exchange-panel {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.exchange-panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.exchange-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

.exchange-badge.return-badge {
  background: #dcfce7;
  color: #16a34a;
}

.exchange-badge.new-badge {
  background: #dbeafe;
  color: #2563eb;
}

.exchange-return .product-search-box {
  margin-bottom: 12px;
  padding: 0;
  border: none;
}

.exchange-new .product-search-box {
  margin-bottom: 12px;
  padding: 0;
  border: none;
}

.exchange-settlement {
  background: white;
  border: 2px solid var(--primary);
  border-radius: 12px;
  padding: 20px;
}

/* Summary row (reusable) */
.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 14px;
}

.summary-row.total {
  font-size: 18px;
  font-weight: 700;
  padding: 10px 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin: 4px 0;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* Viewport */
  body { min-height: 100dvh; }

  /* Sidebar */
  .sidebar {
    transform: translateX(-100%);
    z-index: 200;
  }
  .sidebar.show { transform: translateX(0); }

  /* Main */
  .main-content { margin-left: 0; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; }
  .topbar { padding: 0 12px; }

  /* Page */
  .page-content { padding: 12px; }

  /* Layout */
  .stats-grid { grid-template-columns: 1fr; }
  .billing-layout { grid-template-columns: 1fr; gap: 12px; }
  .exchange-layout { grid-template-columns: 1fr; gap: 12px; }
  .exchange-panel { padding: 12px; }
  .exchange-settlement { padding: 14px; }
  .form-row { flex-direction: column; gap: 0; }

  /* Cards */
  .card { padding: 14px; margin-bottom: 12px; border-radius: var(--radius-sm); }
  .stat-card { padding: 14px; gap: 12px; }
  .stat-value { font-size: 20px; }
  .stat-icon { width: 40px; height: 40px; font-size: 18px; border-radius: 10px; }

  /* Buttons — 44px touch target */
  .btn {
    padding: 10px 16px;
    font-size: 14px;
    min-height: 44px;
  }
  .btn-sm { padding: 6px 12px; font-size: 13px; min-height: 36px; }
  .btn-lg { padding: 12px 24px; font-size: 15px; min-height: 48px; }
  .quick-pay-btn {
    padding: 10px 16px;
    font-size: 14px;
    min-height: 44px;
    flex: 1;
    text-align: center;
  }
  .quick-pay-btns { gap: 6px; }

  /* Form inputs — 16px font to prevent iOS zoom */
  .form-input, .form-select, .form-textarea, .search-input {
    font-size: 16px;
    padding: 10px 12px;
  }
  .search-input { padding: 10px 12px 10px 36px; }

  /* Tables */
  .data-table th, .data-table td { padding: 10px 8px; font-size: 13px; }
  .cart-table th, .cart-table td { padding: 6px 4px; font-size: 12px; }
  .qty-input { width: 50px; font-size: 14px; }
  .price-input { width: 70px; font-size: 14px; }

  /* Modal — fullscreen */
  .modal-overlay {
    padding-top: 0;
    align-items: flex-end;
  }
  .modal {
    width: 100%;
    max-width: 100%;
    max-height: 90dvh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-top: 10dvh;
  }
  .modal-header { padding: 14px 16px; }
  .modal-body { padding: 16px; }
  .modal-footer { padding: 12px 16px; flex-wrap: wrap; }
  .modal-footer .btn { flex: 1; min-width: 0; }

  /* Billing */
  .billing-left, .billing-right { padding: 14px; }
  .billing-customer { flex-direction: column; gap: 8px; align-items: stretch; }
  .billing-customer > div { width: 100%; }

  /* Search results — bottom sheet on mobile */
  .customer-search-results, .product-search-results {
    max-height: 40dvh;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  }

  /* Search bar */
  .search-bar { flex-direction: column; gap: 8px; }
  .search-bar .search-input { min-width: 0; width: 100%; }
  .search-bar .btn { width: 100%; }

  /* Picker */
  .picker-btn { padding: 8px 14px; font-size: 14px; min-width: 44px; }
  .picker-toggle { padding: 8px 14px; font-size: 14px; }

  /* Quantity matrix */
  .qty-matrix-table { font-size: 12px; }
  .qty-matrix-table th { padding: 6px 4px; font-size: 11px; }
  .qty-matrix-table td { padding: 4px; }
  .qty-matrix-table input.qty-cell {
    width: 100%;
    max-width: 44px;
    padding: 6px 4px;
    font-size: 14px;
  }

  /* Toast */
  .toast-container {
    top: 10px;
    right: 10px;
    left: 10px;
  }
  .toast { min-width: 0; font-size: 13px; padding: 10px 14px; }

  /* Empty state */
  .empty-state { padding: 30px 16px; }
  .empty-state-icon { font-size: 40px; }

  /* Safe area for notch phones */
  @supports (padding-bottom: env(safe-area-inset-bottom)) {
    .modal { padding-bottom: env(safe-area-inset-bottom); }
    .page-content { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
  }
}

/* ===== Utility ===== */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-secondary { color: var(--text-secondary); }
.font-bold { font-weight: 700; }
.font-lg { font-size: 18px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.flex-wrap { flex-wrap: wrap; }
.w-full { width: 100%; }

/* ===== Login Page ===== */
.login-container {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: 16px;
  padding: 40px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 12px 0 4px;
  color: var(--text);
}

.login-form .form-group {
  margin-bottom: 16px;
}

.login-form .btn-block {
  width: 100%;
}


/* ===== 打印样式 ===== */
@media print {
  body * { visibility: hidden; }
  .statement-print, .statement-print * { visibility: visible; }
  .statement-print { position: absolute; left: 0; top: 0; width: 100%; padding: 20px; }
  .statement-print button { display: none !important; }
  .statement-print .statement-header { background: #f5f5f5 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .statement-print table { border-color: #000 !important; }
  .statement-print th { background: #f0f0f0 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .statement-print .text-danger { color: #d00 !important; }
  @page { margin: 10mm; }
}