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;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* 自定义样式 */
.navbar-brand {
  font-weight: bold;
  font-size: 1.5rem;
}

.jumbotron {
  padding: 2rem 1rem;
  margin-bottom: 2rem;
  background-color: #e9ecef;
  border-radius: 0.3rem;
}

.card {
  transition: transform 0.3s ease;
  margin-bottom: 1.5rem;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-header {
  font-weight: bold;
}

footer {
  background-color: #f8f9fa;
  padding: 0.1rem 0;
  font-size: 0.875rem;
  line-height: 1.2;
}

#container-footer {
  text-align: center;
  padding: 0.15rem 0 0.05rem 0;
}

#container-footer p {
  margin-bottom: 0;
}

.btn-primary {
  background-color: #0d6efd;
  border-color: #0d6efd;
}

.btn-primary:hover {
  background-color: #0b5ed7;
  border-color: #0a58ca;
}

.text-primary {
  color: #0d6efd !important;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .display-4 {
    font-size: 2.5rem;
  }
  
  .card {
    margin-bottom: 1rem;
  }
}