html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

/* 移动端优化 */
@media (max-width: 576px) {
  .container-fluid {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  
  .card-body {
    padding: 0.75rem;
  }
  
  .table {
    font-size: 0.875rem;
  }
  
  .btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
  }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .nav-link {
    padding: 0.75rem 1rem;
  }
}