/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #f5f6fa;
  color: #333;
  font-size: 14px;
}

/* 登录页 */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-box {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 400px;
  padding: 40px 30px;
}

.login-box h1 {
  text-align: center;
  margin-bottom: 8px;
  font-size: 24px;
  color: #333;
}

.login-box .subtitle {
  text-align: center;
  color: #999;
  margin-bottom: 30px;
  font-size: 13px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: #555;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: #667eea;
  color: #fff;
  width: 100%;
  padding: 14px;
  font-size: 16px;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-success {
  background: #52c41a;
  color: #fff;
}

.btn-danger {
  background: #ff4d4f;
  color: #fff;
}

.btn-warning {
  background: #faad14;
  color: #fff;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* 管理台布局 */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: #001529;
  color: #fff;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  font-size: 16px;
  font-weight: bold;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-menu {
  list-style: none;
  padding: 10px 0;
}

.sidebar-menu li a {
  display: block;
  padding: 14px 20px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: all 0.2s;
}

.sidebar-menu li a:hover,
.sidebar-menu li a.active {
  background: #1890ff;
  color: #fff;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: 56px;
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
}

.topbar-title {
  font-size: 16px;
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

/* 卡片 */
.card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  padding: 20px;
  margin-bottom: 20px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
}

/* 搜索栏 */
.search-bar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.search-bar input {
  padding: 8px 12px;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  font-size: 14px;
  min-width: 220px;
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  background: #fafafa;
  padding: 12px;
  text-align: left;
  font-weight: 600;
  color: #555;
  border-bottom: 1px solid #f0f0f0;
  white-space: nowrap;
}

tbody td {
  padding: 12px;
  border-bottom: 1px solid #f0f0f0;
  color: #555;
  vertical-align: middle;
}

tbody tr:hover {
  background: #fafafa;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #e6f7ff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #1890ff;
  flex-shrink: 0;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-meta {
  min-width: 0;
}

.user-name {
  font-weight: 500;
  color: #333;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-id {
  font-size: 12px;
  color: #999;
  font-family: monospace;
}

.actions {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
}

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.pagination button {
  padding: 6px 14px;
  border: 1px solid #d9d9d9;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination .page-info {
  color: #666;
  font-size: 13px;
}

/* 弹窗 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: 10px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: #999;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid #f0f0f0;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group .help-text {
  font-size: 12px;
  color: #999;
  margin-top: 4px;
}

/* 提示 */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
  z-index: 2000;
  animation: slideIn 0.3s ease;
}

.toast.success { background: #52c41a; }
.toast.error { background: #ff4d4f; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #999;
}

/* 下拉搜索 */
.dropdown-search {
  position: relative;
}

.dropdown-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid #d9d9d9;
  border-radius: 6px;
  margin-top: 4px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.dropdown-item {
  padding: 10px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dropdown-item:hover {
  background: #f5f5f5;
}

.dropdown-item .dropdown-name {
  font-weight: 500;
}

.dropdown-item .dropdown-id {
  font-size: 11px;
  color: #999;
  font-family: monospace;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .page-content {
    padding: 16px;
  }
  .card-header {
    flex-direction: column;
    align-items: stretch;
  }
  .search-bar input {
    width: 100%;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  table {
    font-size: 12px;
  }
  tbody td {
    padding: 8px;
  }
}