/* ============================================
   components.css — 通用组件样式
   按钮、表单、表格、标签、下拉、分页、弹窗
   ============================================ */

/* ========================================
   按钮 Button
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  user-select: none;
  gap: 6px;
  border: 1px solid transparent;
}

.btn:active {
  transform: scale(0.97);
}

/* 主要按钮 */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}
.btn-primary:active {
  background: var(--color-primary-active);
}

/* 默认按钮 */
.btn-default {
  background: var(--color-bg-white);
  color: var(--color-text-primary);
  border-color: var(--color-border-base);
}
.btn-default:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* 危险按钮 */
.btn-danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}
.btn-danger:hover {
  opacity: 0.85;
}

/* 文字按钮 */
.btn-text {
  background: transparent;
  color: var(--color-primary);
  border: none;
  padding: 0 8px;
}
.btn-text:hover {
  background: var(--color-primary-light);
}

/* 按钮尺寸 */
.btn-sm {
  height: 28px;
  padding: 0 10px;
  font-size: var(--font-size-sm);
}
.btn-lg {
  height: 44px;
  padding: 0 24px;
  font-size: var(--font-size-md);
}

/* 禁用态 */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ========================================
   表单 Form
   ======================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.form-label--required::after {
  content: "*";
  color: var(--color-danger);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  height: 36px;
  padding: 0 12px;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-base);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(2, 167, 240, 0.12);
}

.form-input::placeholder {
  color: var(--color-text-placeholder);
}

.form-input:disabled,
.form-select:disabled {
  background: var(--color-bg-component);
  color: var(--color-text-disabled);
  cursor: not-allowed;
}

.form-textarea {
  height: auto;
  min-height: 80px;
  padding: 8px 12px;
  resize: vertical;
}

.form-select {
  padding-right: 30px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

/* 搜索输入框 */
.form-search {
  position: relative;
}
.form-search .form-input {
  padding-left: 36px;
}
.form-search .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-placeholder);
  pointer-events: none;
}

/* 日期范围输入框组 */
.date-range-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.date-range-group .form-input {
  width: 180px;
}
.date-range-group .separator {
  color: var(--color-text-secondary);
}

/* ========================================
   表格 Table
   ======================================== */

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-white);
}

.data-table th {
  height: 44px;
  padding: 0 16px;
  background: var(--color-table-header-bg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
  white-space: nowrap;
}

.data-table td {
  height: 48px;
  padding: 0 16px;
  font-size: var(--font-size-base);
  color: var(--color-text-regular);
  border-bottom: 1px solid var(--color-border-light);
}

.data-table tbody tr:hover {
  background: var(--color-table-row-hover);
}

.data-table tbody tr:nth-child(even) {
  background: var(--color-table-stripe);
}
.data-table tbody tr:nth-child(even):hover {
  background: var(--color-table-row-hover);
}

/* ========================================
   标签 Tag / 徽章 Badge
   ======================================== */

.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 8px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  gap: 4px;
}

.tag-default { background: var(--color-bg-component); color: var(--color-text-regular); }
.tag-primary { background: var(--color-primary-light); color: var(--color-primary); }
.tag-success { background: var(--color-success-bg); color: var(--color-success); }
.tag-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.tag-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse);
  background: var(--color-danger);
  border-radius: 10px;
  line-height: 1;
}

/* ========================================
   分页 Pagination
   ======================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 16px 0;
}

.pagination .page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-regular);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-base);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}
.pagination .page-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.pagination .page-btn.active {
  color: var(--color-text-inverse);
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.pagination .page-btn:disabled {
  color: var(--color-text-disabled);
  cursor: not-allowed;
}

/* ========================================
   模态框 Modal
   ======================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg-mask);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 520px;
  max-width: 90vw;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.modal-close {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color 0.2s;
}
.modal-close:hover {
  color: var(--color-text-primary);
}

.modal-body {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  padding: 12px 24px;
  border-top: 1px solid var(--color-border-light);
}

/* ========================================
   下拉菜单 Dropdown
   ======================================== */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  margin-top: 4px;
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: 1500;
  padding: 4px 0;
  display: none;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  font-size: var(--font-size-base);
  color: var(--color-text-regular);
  cursor: pointer;
  transition: background 0.2s;
  gap: 8px;
}
.dropdown-item:hover {
  background: var(--color-bg-hover);
}
.dropdown-item.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ========================================
   加载 / 空状态
   ======================================== */

.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
  color: var(--color-text-secondary);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  color: var(--color-text-secondary);
  gap: 12px;
}

.empty-state .empty-icon {
  font-size: 48px;
  opacity: 0.3;
}

/* ========================================
   提示信息 Tooltip / Message
   ======================================== */

.message {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  display: flex;
  align-items: center;
  gap: 8px;
}

.message-info    { background: var(--color-info-bg);    color: var(--color-info); }
.message-success { background: var(--color-success-bg); color: var(--color-success); }
.message-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.message-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }