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;
  background-color: #f8f9fa;
  background-image: url('../images/1.jpeg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card, .navbar, .alert {
    background-color: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(5px);
}

.toast {
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(5px);
    color: #212529 !important; /* 强制黑色文字 */
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.toast-header {
    background-color: rgba(255, 255, 255, 0.9) !important;
    color: #212529 !important;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.toast-body {
    color: #212529 !important;
    font-weight: 500;
}

.card {
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.08);
}

.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;
}