/* AILawer 全局样式 */

:root {
  --primary-color: #2563eb;
  --secondary-color: #3b82f6;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #6366f1;
  --dark-color: #1f2937;
  --light-color: #f3f4f6;
  --white: #ffffff;
  --border-color: #e5e7eb;
  --text-muted: #6b7280;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: #f9fafb;
  margin: 0;
  padding: 0;
}

/* 导航栏样式 */
.navbar {
  background-color: var(--white) !important;
  box-shadow: var(--shadow);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-color) !important;
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--secondary-color) !important;
}

.navbar-nav .nav-link {
  color: var(--dark-color) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: all 0.3s ease;
  text-decoration: none;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color) !important;
}

.navbar-nav .nav-link.active {
  color: var(--primary-color) !important;
  border-bottom: 2px solid var(--primary-color);
}

.navbar-toggler {
  border: 1px solid var(--border-color);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

.dropdown-menu {
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.dropdown-item {
  color: var(--dark-color);
  transition: all 0.3s ease;
}

.dropdown-item:hover {
  background-color: var(--light-color);
  color: var(--primary-color);
}

/* 页脚样式 */
.footer {
  background-color: var(--dark-color);
  color: var(--white);
  padding: 3rem 0 1rem;
  margin-top: 5rem;
}

.footer h5 {
  color: var(--white);
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid #374151;
  margin-top: 2rem;
  padding-top: 2rem;
  text-align: center;
  color: #9ca3af;
}

/* 按钮样式 */
.btn {
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-weight: 500;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--light-color);
  color: var(--dark-color);
}

.btn-secondary:hover {
  background-color: #e5e7eb;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
}

/* 卡片样式 */
.card {
  background-color: var(--white);
  border-radius: 0.5rem;
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-header {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

/* 表单样式 */
.form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--dark-color);
}

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

/* 提示信息样式 */
.alert {
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  border-radius: 0.375rem;
  font-weight: 500;
}

.alert-success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-warning {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.alert-info {
  background-color: #dbeafe;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* 加载动画 */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--light-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* 工具类 */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

/* 响应式 */
@media (max-width: 768px) {
  .navbar-nav {
    text-align: center;
  }
  
  .footer {
    text-align: center;
  }
  
  .footer .col-md-4 {
    margin-bottom: 2rem;
  }
}