/* === 商品管理系统 - 企业亮色风格 === */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #ea580c;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.05);
  --radius: 8px;
  --radius-sm: 4px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--gray-800);
  font-size: 14px;
  line-height: 1.6;
}

/* === Navbar === */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 60px;
  position: sticky; top: 0; z-index: 100;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 600; color: var(--primary);
  margin-right: 40px;
}
.brand-icon { font-size: 24px; }
.nav-menu {
  list-style: none; display: flex; gap: 4px;
  margin: 0; padding: 0; flex: 1;
}
.nav-menu a {
  display: block;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  transition: all .15s;
}
.nav-menu a:hover { background: var(--gray-100); color: var(--primary); }
.nav-menu a.active { background: var(--primary-light); color: var(--primary); }
.nav-user {
  display: flex; align-items: center; gap: 16px;
}
.user-info {
  display: flex; flex-direction: column; align-items: flex-end; line-height: 1.3;
}
.user-name { font-weight: 600; color: var(--gray-800); }
.user-role {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  font-weight: 500; margin-top: 2px;
}
.role-super_admin { background: #fef3c7; color: #92400e; }
.role-manager { background: var(--gray-100); color: var(--gray-700); }
.btn-logout {
  color: var(--gray-500); text-decoration: none; font-size: 13px;
  padding: 6px 12px; border-radius: var(--radius-sm);
}
.btn-logout:hover { background: var(--gray-100); color: var(--danger); }

/* === Main === */
main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}
.login-main {
  max-width: none; margin: 0; padding: 0;
}

/* === Page Header === */
.page-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px;
}
.page-header h1 {
  font-size: 22px; font-weight: 600; margin: 0; color: var(--gray-900);
}
.page-actions { display: flex; gap: 8px; }

/* === Login === */
.login-container {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  padding: 20px;
}
.login-card {
  background: var(--surface);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 40px;
  width: 100%; max-width: 400px;
}
.login-header {
  text-align: center; margin-bottom: 32px;
}
.login-logo {
  font-size: 56px; display: block; margin-bottom: 12px;
}
.login-header h1 {
  font-size: 24px; margin: 0 0 4px; color: var(--gray-900);
}
.login-subtitle {
  color: var(--gray-500); margin: 0; font-size: 13px;
}
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-footer {
  text-align: center; margin-top: 24px;
  color: var(--gray-400); font-size: 12px;
}

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--surface);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}
.btn:hover {
  background: var(--gray-50); border-color: var(--gray-400);
}
.btn-primary {
  background: var(--primary); color: white; border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark); border-color: var(--primary-dark);
}
.btn-danger {
  background: var(--danger); color: white; border-color: var(--danger);
}
.btn-danger:hover { background: #b91c1c; }
.btn-link {
  background: transparent; border-color: transparent; color: var(--primary);
}
.btn-link:hover { background: var(--primary-light); text-decoration: underline; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; padding: 12px; }

/* === Forms === */
.form-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  max-width: 640px;
}
.data-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row label {
  font-weight: 500; color: var(--gray-700); font-size: 13px;
}
.required { color: var(--danger); }
.form-row input, .form-row select, .form-row textarea {
  padding: 9px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background: var(--surface);
  transition: all .15s;
}
.form-row input:focus, .form-row select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .1);
}
.form-row input.readonly, .form-row input:disabled {
  background: var(--gray-100); color: var(--gray-500); cursor: not-allowed;
}
.form-actions {
  display: flex; gap: 10px; margin-top: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
}
.hint { color: var(--gray-500); font-size: 12px; }

/* === Search Bar === */
.search-bar {
  background: var(--surface);
  padding: 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
  display: flex; justify-content: space-between; align-items: center;
}
.search-form { display: flex; gap: 8px; flex: 1; max-width: 600px; }
.search-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.search-input:focus {
  outline: none; border-color: var(--primary);
}
.search-meta { color: var(--gray-500); font-size: 13px; }
.search-meta em { color: var(--primary); font-style: normal; font-weight: 600; }

/* === Tables === */
.table-wrap {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th {
  background: var(--gray-50);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--gray-200);
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-800);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--gray-50); }
.actions { display: flex; gap: 6px; }
.empty-row {
  text-align: center !important;
  padding: 48px !important;
  color: var(--gray-400);
}
.empty-row a { color: var(--primary); }

.mono {
  font-family: 'SF Mono', Monaco, Consolas, 'Courier New', monospace;
  font-size: 13px;
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: 3px;
}
.color-chip {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
}

/* === Pagination === */
.pagination {
  display: flex; justify-content: center; align-items: center;
  gap: 12px; margin-top: 20px;
}
.page-info {
  padding: 6px 12px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  color: var(--gray-700);
  font-weight: 500;
}

/* === Alerts === */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  border: 1px solid;
}
.alert-error {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

/* === Cards (grid-2) === */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card h3 {
  margin: 0 0 16px;
  font-size: 16px;
  color: var(--gray-800);
}

/* === Role badge === */
.role-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
}

/* === Action log tags === */
.action-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-family: monospace;
  background: var(--gray-100);
  color: var(--gray-700);
}
.action-login_success { background: #dcfce7; color: #15803d; }
.action-login_fail { background: #fee2e2; color: #991b1b; }
.action-product_create { background: #dbeafe; color: #1e40af; }
.action-product_update { background: #fef3c7; color: #92400e; }
.action-product_delete { background: #fee2e2; color: #991b1b; }
.action-account_create { background: #ede9fe; color: #5b21b6; }
.action-account_delete { background: #fee2e2; color: #991b1b; }

/* === Toast === */
.toast {
  position: fixed;
  top: 20px; right: 20px;
  padding: 12px 20px;
  background: var(--gray-800);
  color: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(-20px);
  transition: all .25s;
  pointer-events: none;
  z-index: 1000;
  font-size: 14px;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast.toast-success { background: var(--success); }
.toast.toast-error { background: var(--danger); }

/* === 响应式 === */
@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .nav-menu { display: none; }
}