/*
 * 文件：css/user-auth.css
 * 作用：用户认证界面样式
 * 功能：登录注册弹窗和用户信息显示样式
 */

/* 认证弹窗样式 */
.auth-popup {
  width: 400px;
  max-width: 90vw;
  max-height: 90vh;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  position: relative;
}

.auth-container {
  padding: 0;
}

.auth-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 24px;
  text-align: center;
}

.auth-header h2 {
  margin: 0 0 16px 0;
  font-size: 24px;
  font-weight: 600;
}

.auth-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.auth-tab {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
}

.auth-tab:hover {
  background: rgba(255, 255, 255, 0.3);
}

.auth-tab.active {
  background: rgba(255, 255, 255, 0.9);
  color: #667eea;
  font-weight: 600;
}

.auth-content {
  padding: 32px 24px 24px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 500;
  color: #333;
  font-size: 14px;
}

.form-group input {
  padding: 12px 16px;
  border: 2px solid #e1e5e9;
  border-radius: 8px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.8);
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
  color: #999;
}

.form-actions {
  margin-top: 8px;
}

.auth-submit-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.auth-submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.auth-submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.auth-footer {
  margin-top: 24px;
  text-align: center;
}

.auth-switch {
  color: #666;
  font-size: 14px;
  margin: 0;
}

.auth-switch-btn {
  background: none;
  border: none;
  color: #667eea;
  cursor: pointer;
  font-weight: 600;
  text-decoration: underline;
  font-size: 14px;
}

.auth-switch-btn:hover {
  color: #764ba2;
}

.auth-message {
  margin-top: 16px;
  padding: 12px;
  border-radius: 8px;
  font-size: 14px;
  text-align: center;
}

.auth-message.error {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.auth-message.success {
  background: rgba(34, 197, 94, 0.1);
  color: #16a34a;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

/* 用户信息区域样式 */
.user-info-section {
  margin-bottom: 24px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.user-avatar {
  font-size: 48px;
  color: #667eea;
}

.user-details {
  flex: 1;
}

.username {
  font-size: 18px;
  font-weight: 600;
  color: #333;
  margin-bottom: 4px;
}

.user-email {
  font-size: 14px;
  color: #666;
}

.logout-btn {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.2);
}

.login-prompt {
  text-align: center;
  padding: 24px;
  color: #666;
}

.login-prompt i {
  font-size: 48px;
  margin-bottom: 16px;
  color: #ccc;
}

.login-prompt p {
  margin: 0 0 16px 0;
  font-size: 16px;
}

.login-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

/* 响应式设计 */
@media (max-width: 480px) {
  .auth-popup {
    width: 95vw;
    margin: 20px auto;
  }
  
  .auth-content {
    padding: 24px 20px 20px;
  }
  
  .auth-header {
    padding: 20px;
  }
  
  .auth-header h2 {
    font-size: 20px;
  }
  
  .user-info {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  
  .user-details {
    order: -1;
  }
}

/* 深色主题适配 */
@media (prefers-color-scheme: dark) {
  .auth-popup {
    background: rgba(30, 30, 30, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
  }
  
  .form-group label {
    color: #e5e5e5;
  }
  
  .form-group input {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: #e5e5e5;
  }
  
  .form-group input::placeholder {
    color: #999;
  }
  
  .auth-switch {
    color: #ccc;
  }
  
  .username {
    color: #e5e5e5;
  }
  
  .user-email {
    color: #999;
  }
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-popup {
  animation: fadeInUp 0.3s ease-out;
}

.auth-message {
  animation: fadeInUp 0.3s ease-out;
}

/* 加载动画 */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.fa-spinner {
  animation: spin 1s linear infinite;
}