/* 登录和注册页面样式 - 适配主站风格 */
:root {
  --primary-color: #007bff;
  --primary-hover: #0069d9;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --light-bg: #f8f9fa;
  --border-color: #e9ecef;
  --box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.auth-container {
  max-width: 450px;
  margin: 50px auto;
  position: relative;
}

.auth-container .card {
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: box-shadow 0.3s ease;
}

.auth-container .card:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.auth-container .card-header {
  background-color: var(--light-bg);
  color: #333;
  padding: 15px 20px;
  font-size: 1.2rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-weight: bold;
}

.auth-container .card-header i {
  margin-right: 8px;
  color: var(--primary-color);
}

.auth-container .card-body {
  padding: 25px;
}

.auth-container .form-group {
  margin-bottom: 20px;
  position: relative;
}

.auth-container label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  font-size: 0.95rem;
  color: #333;
}

.auth-container label i {
  margin-right: 5px;
  color: var(--primary-color);
}

.auth-container input {
  width: 96%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.auth-container input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
  outline: none;
}

.auth-container .btn-primary {
  width: 100%;
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.auth-container .btn-primary:hover {
  background-color: var(--primary-hover);
}

.auth-container p {
  margin-top: 20px;
  text-align: center;
  color: #666;
}

.auth-container a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.auth-container a:hover {
  text-decoration: underline;
}

/* 错误信息样式 */
.error-message {
  color: var(--danger-color) !important;
  font-size: 0.8rem;
  margin-top: 5px;
  font-weight: 400;
  display: none;
}

/* 输入验证动画 */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
  animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

/* 响应式调整 */
@media (max-width: 480px) {
  .auth-container {
    max-width: 100%;
    margin: 40px 20px;
  }
  
  .auth-container .card-body {
    padding: 20px;
  }
}