/* 表单验证错误样式 */
.field-error {
    border: 2px solid #ff4444 !important;
    background-color: #fff5f5 !important;
    animation: shake 0.5s;
}

.error-message {
    color: #ff4444;
    font-size: 13px;
    margin-top: 5px;
    display: block;
    font-weight: 500;
    animation: fadeIn 0.3s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 清除错误状态后的过渡效果 */
input.field-error:focus,
select.field-error:focus,
textarea.field-error:focus {
    border-color: #4CAF50 !important;
    background-color: #fff !important;
}