/* 联系表单样式 */
.contact-form {
    position: relative;
}

.contact-form .alert {
    margin-bottom: 1rem;
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.contact-form .alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left: 4px solid #28a745;
}

.contact-form .alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.contact-form .alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
    border-left: 4px solid #ffc107;
}

.contact-form .alert i {
    font-size: 1.1em;
}

.contact-form .alert ul {
    padding-left: 1.2rem;
}

.contact-form .alert a {
    color: inherit;
    font-weight: 600;
}

.contact-form .alert a:hover {
    text-decoration: underline !important;
}

/* 表单输入框样式增强 */
.contact-form .form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.contact-form .form-control.is-invalid {
    border-color: #dc3545;
}

.contact-form .form-control.is-valid {
    border-color: #28a745;
}

/* 提交按钮样式 */
.contact-form .btn-primary {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-form .btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.contact-form .btn-primary:disabled {
    background: #6c757d;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 加载动画 */
.contact-form .btn-primary:disabled i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 电话验证提示样式 */
.phone-validation-hint {
    animation: fadeInUp 0.3s ease;
    background: rgba(220, 53, 69, 0.1);
    padding: 6px 10px;
    border-radius: 4px;
    border-left: 3px solid #dc3545;
}

.phone-validation-hint i {
    color: #dc3545;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-form .alert {
        font-size: 14px;
        padding: 12px;
    }
    
    .contact-form .alert ul {
        padding-left: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .contact-form .form-control {
        padding: 10px 14px;
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .contact-form .btn-primary {
        padding: 14px 20px;
        font-size: 16px;
    }
    
    .phone-validation-hint {
        font-size: 12px;
        padding: 4px 8px;
    }
}