* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-sans-serif);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* 链接样式 */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}

a:hover {
  color: #0056b3;
  text-decoration: underline;
}

/* 图片响应式 */
img {
  max-width: 100%;
  height: auto;
}

/* 卡片样式 */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--bg-primary);
    background-clip: border-box;
    border: var(--card-border-width) solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--card-spacer-y) var(--card-spacer-x);
    margin-bottom: 0;
    background-color: var(--card-cap-bg);
    border-bottom: var(--card-border-width) solid var(--border-color);
    border-radius: calc(var(--border-radius) - 1px) calc(var(--border-radius) - 1px) 0 0;
}

.card-body {
    flex: 1 1 auto;
    padding: var(--card-spacer-x);
}

.card-footer {
  padding: var(--card-spacer-y) var(--card-spacer-x);
  background-color: var(--card-cap-bg);
  border-top: var(--card-border-width) solid var(--border-color);
  border-radius: 0 0 calc(var(--border-radius) - 1px) calc(var(--border-radius) - 1px);
}

.card-title {
  margin-bottom: 0.5rem;
  color: var(--card-cap-color);
}

.card-subtitle {
  margin-top: -0.25rem;
  margin-bottom: 0;
}

.card-text:last-child {
  margin-bottom: 0;
}

/* 统计卡片样式 */
.stat-card {
  border: none;
  box-shadow: var(--box-shadow);
  transition: transform 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
}

.stat-card-content {
  display: flex;
  align-items: center;
}

.stat-card-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(74, 108, 247, 0.1);
  color: var(--primary);
  border-radius: var(--border-radius);
  margin-right: 1rem;
  font-size: 1.5rem;
}

.stat-card-info {
  flex: 1;
}

.stat-card-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.stat-card-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0;
}

.stat-card-change {
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* 按钮样式 - 符合UI设计方案要求 */
.btn {
  display: inline-block;
  font-weight: var(--btn-font-weight);
  line-height: var(--input-line-height);
  color: #212529;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  background-color: transparent;
  border: 1px solid transparent;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.btn:hover {
  color: #212529;
  text-decoration: none;
}

.btn:focus,
.btn.focus {
  outline: 0;
  box-shadow: var(--btn-focus-box-shadow);
}

.btn:disabled,
.btn.disabled,
fieldset:disabled .btn {
  pointer-events: none;
  opacity: 0.65;
}

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

.btn-primary:hover {
  color: #fff;
  background-color: #0069d9;
  border-color: #0062cc;
}

.btn-primary:focus,
.btn-primary.focus {
  color: #fff;
  background-color: #0069d9;
  border-color: #0062cc;
  box-shadow: 0 0 0 0.2rem rgba(38, 143, 255, 0.5);
}

.btn-outline-primary {
  color: var(--primary);
  border-color: var(--primary);
}

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

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

.btn-secondary:hover {
  color: #fff;
  background-color: #5a50ce;
  border-color: #5247cc;
}

.btn-success:focus,
.btn-success.focus {
  box-shadow: 0 0 0 0.2rem rgba(72, 180, 97, 0.5);
}

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

.btn-info:hover {
  color: #fff;
  background-color: #138496;
  border-color: #117a8b;
}

.btn-warning {
  color: #212529;
  background-color: var(--warning);
  border-color: var(--warning);
}

.btn-warning:hover {
  color: #212529;
  background-color: #e0a800;
  border-color: #d39e00;
}

.btn-warning:focus,
.btn-warning.focus {
  box-shadow: 0 0 0 0.2rem rgba(222, 170, 12, 0.5);
}

.btn-danger:focus,
.btn-danger.focus {
  box-shadow: 0 0 0 0.2rem rgba(225, 83, 97, 0.5);
}

.btn-light {
  color: #212529;
  background-color: var(--light);
  border-color: var(--light);
}

.btn-light:hover {
  color: #212529;
  background-color: #e2e6ea;
  border-color: #dae0e5;
}

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

.btn-dark:hover {
  color: #fff;
  background-color: #23272b;
  border-color: #1d2124;
}

.btn-outline-secondary {
  color: var(--secondary);
  border-color: var(--secondary);
}

.btn-outline-secondary:hover {
  color: #fff;
  background-color: var(--secondary);
  border-color: var(--secondary);
}

.btn-outline-success {
  color: var(--success);
  border-color: var(--success);
}

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

.btn-outline-info {
  color: var(--info);
  border-color: var(--info);
}

.btn-outline-info:hover {
  color: #fff;
  background-color: var(--info);
  border-color: var(--info);
}

.btn-outline-warning {
  color: #212529;
  border-color: var(--warning);
}

.btn-outline-warning:hover {
  color: #212529;
  background-color: var(--warning);
  border-color: var(--warning);
}

.btn-outline-danger {
  color: var(--danger);
  border-color: var(--danger);
}

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

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

.btn-success:hover {
  color: #fff;
  background-color: #218838;
  border-color: #1e7e34;
}

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

.btn-danger:hover {
  color: #fff;
  background-color: #c82333;
  border-color: #bd2130;
}

.btn-sm {
  padding: calc(var(--btn-padding-y) * 0.5) calc(var(--btn-padding-x) * 0.5);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-sm);
}

.btn-lg {
  padding: calc(var(--btn-padding-y) * 1.5) calc(var(--btn-padding-x) * 1.5);
  font-size: var(--font-size-lg);
  border-radius: var(--border-radius);
}

/* 圆角按钮 */
.rounded-pill {
  border-radius: 50rem !important;
}

/* 图标按钮 */
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--border-radius-sm);
}

.btn-icon.btn-sm {
  width: 2rem;
  height: 2rem;
}

.btn-icon.btn-lg {
  width: 3rem;
  height: 3rem;
}

/* 按钮组 */
.btn-group {
  position: relative;
  display: inline-flex;
  vertical-align: middle;
}

.btn-group > .btn {
  position: relative;
  flex: 1 1 auto;
}

.btn-group > .btn:not(:first-child) {
  margin-left: -1px;
}

.btn-group > .btn:not(:last-child):not(.dropdown-toggle) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.btn-group > .btn:not(:first-child) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* 表单控件样式 */
.form-control {
  display: block;
  width: 100%;
  padding: var(--input-padding-y) var(--input-padding-x);
  font-size: var(--font-size-base);
  font-weight: var(--btn-font-weight);
  line-height: var(--input-line-height);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-clip: padding-box;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border-color: var(--input-focus-border-color);
  outline: 0;
  box-shadow: var(--input-focus-box-shadow);
}

.form-select {
  display: block;
  width: 100%;
  padding: var(--input-padding-y) calc(var(--input-padding-x) + 1.5rem) var(--input-padding-y) var(--input-padding-x);
  font-size: var(--font-size-base);
  font-weight: var(--btn-font-weight);
  line-height: var(--input-line-height);
  color: var(--text-primary);
  vertical-align: middle;
  background-color: var(--bg-primary);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--input-padding-x) center;
  background-size: 16px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  appearance: none;
}

.form-select:focus {
  border-color: var(--input-focus-border-color);
  outline: 0;
  box-shadow: var(--input-focus-box-shadow);
}

.form-check {
  display: block;
  min-height: 1.5rem;
  padding-left: 1.5em;
  margin-bottom: 0.125rem;
}

.form-check .form-check-input {
  float: left;
  margin-left: -1.5em;
}

.form-check-input {
  width: 1em;
  height: 1em;
  margin-top: 0.25em;
  vertical-align: top;
  background-color: var(--bg-primary);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  border: 1px solid rgba(0, 0, 0, 0.25);
  appearance: none;
  print-color-adjust: exact;
}

.form-check-input[type=checkbox] {
  border-radius: 0.25em;
}

.form-check-input[type=radio] {
  border-radius: 50%;
}

.form-check-input:checked {
  background-color: var(--primary);
  border-color: var(--primary);
}

.form-check-input:checked[type=checkbox] {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='M6 10l3 3l6-6'/%3e%3c/svg%3e");
}

.form-check-input:checked[type=radio] {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='2' fill='%23fff'/%3e%3c/svg%3e");
}

.form-check-inline {
  display: inline-block;
  margin-right: 1rem;
}

.form-text {
  margin-top: 0.25rem;
  font-size: 0.875em;
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 1rem;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  margin-right: calc(var(--form-grid-gutter-width) * -1);
  margin-left: calc(var(--form-grid-gutter-width) * -1);
}

.form-row > .col,
.form-row > [class*=\"col-\"] {
  padding-right: var(--form-grid-gutter-width);
  padding-left: var(--form-grid-gutter-width);
}

.form-actions {
  margin-top: 1rem;
}

.invalid-feedback {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  font-size: 0.875em;
  color: var(--danger);
}

.is-invalid {
  border-color: var(--danger);
}

.is-invalid:focus {
  border-color: var(--danger);
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* 响应式容器 */
.container-fluid {
  width: 100%;
  padding-right: 0.75rem;
  padding-left: 0.75rem;
  margin-right: auto;
  margin-left: auto;
}

/* 网格系统 */
.row {
  display: flex;
  flex-wrap: wrap;
  margin-right: -0.75rem;
  margin-left: -0.75rem;
}

.col {
  flex-basis: 0;
  flex-grow: 1;
  max-width: 100%;
  padding-right: 0.75rem;
  padding-left: 0.75rem;
}

/* 响应式断点 */
@media (min-width: 576px) {
  .container-fluid {
    max-width: 540px;
  }
}

@media (min-width: 768px) {
  .container-fluid {
    max-width: 720px;
  }
  
  .col-md-1 {
    flex: 0 0 8.333333%;
    max-width: 8.333333%;
  }
  
  .col-md-2 {
    flex: 0 0 16.666667%;
    max-width: 16.666667%;
  }
  
  .col-md-3 {
    flex: 0 0 25%;
    max-width: 25%;
  }
  
  .col-md-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
  }
  
  .col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
  }
  
  .col-md-8 {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
  }
  
  .col-md-12 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

@media (min-width: 992px) {
  .container-fluid {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {
  .container-fluid {
    max-width: 1140px;
  }
}

/* 加载动画 */
.loading-spinner {
  width: 2rem;
  height: 2rem;
  border: 0.25em solid rgba(0, 123, 255, 0.25);
  border-top: 0.25em solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 提示框样式 */
.alert {
  position: relative;
  padding: 1rem 1rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: var(--border-radius-sm);
}

.alert-success {
  color: #155724;
  background-color: #d4edda;
  border-color: #c3e6cb;
}

.alert-danger {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.alert-warning {
  color: #856404;
  background-color: #fff3cd;
  border-color: #ffeaa7;
}

/* 分页样式 */
.pagination {
  display: flex;
  padding-left: 0;
  list-style: none;
}

.page-link {
  position: relative;
  display: block;
  color: var(--primary);
  text-decoration: none;
  background-color: #fff;
  border: 1px solid var(--border-color);
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.page-link:hover {
  z-index: 2;
  color: #3a5cd8;
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
}

.page-item.active .page-link {
  z-index: 3;
  color: #fff;
  background-color: var(--primary);
  border-color: var(--primary);
}

.page-item.disabled .page-link {
  color: var(--text-secondary);
  pointer-events: none;
  background-color: #fff;
  border-color: var(--border-color);
}

/* 表格样式 */
.table {
  width: 100%;
  margin-bottom: 1rem;
  color: var(--text-primary);
  vertical-align: top;
  border-color: var(--border-color);
}

.table th,
.table td {
  padding: var(--table-cell-padding);
  vertical-align: top;
  border-top: 1px solid var(--border-color);
}

.table thead th {
  vertical-align: bottom;
  border-bottom: 2px solid var(--border-color);
}

.table tbody + tbody {
  border-top: 2px solid var(--border-color);
}

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

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(255, 255, 255, 0.05);
}

.table-bordered {
  border: 1px solid var(--border-color);
}

.table-bordered th,
.table-bordered td {
  border: 1px solid var(--border-color);
}

.table-bordered thead th,
.table-bordered thead td {
  border-bottom-width: 2px;
}

/* 数据表格 */
.datatable-wrapper {
  position: relative;
}

.datatable-pagination {
  margin-top: 1rem;
}