.copy-notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    z-index: 1000;
    animation: fadeInOut 2s ease-in-out;
}

@keyframes fadeInOut {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    15% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    85% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
}

/* 暗色模式适配 */
@media (prefers-color-scheme: dark) {
    .copy-notification {
        background-color: rgba(255, 255, 255, 0.1);
    }
}

/* 响应式调整 */
@media (max-width: 640px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    input, button {
        font-size: 14px;
    }
}