body {
    background-color: #f8f9fa;
}

.container {
    max-width: 1000px;
}

.card {
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
}

.form-label {
    font-weight: 500;
}

.text-danger {
    margin-left: 4px;
}

.btn-primary {
    padding: 10px 30px;
}

.alert {
    border-radius: 10px;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #3F51B5;
    border-radius: 4px;
}

/* 表单元素样式 */
.form-control {
    border-radius: 8px;
    padding: 0.8rem 1rem;
    border: 1px solid #dee2e6;
    background-color: #fff;
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

/* 动画效果 */
.animate-fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .btn-primary {
        width: 100%;
    }
}

/* 表单验证样式 */
.was-validated .form-control:valid {
    border-color: #28a745;
    background-image: url("data:image/svg+xml,...");
}

.was-validated .form-control:invalid {
    border-color: #dc3545;
    background-image: url("data:image/svg+xml,...");
}