* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    text-align: center;
    background: white;
    padding: 60px 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 100%;
}

.ip-display {
    font-size: 32px;
    font-weight: 700;
    color: #333;
    margin-bottom: 40px;
    word-break: break-all;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

.copy-button {
    font-size: 24px;
    font-weight: 600;
    padding: 18px 50px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 300px;
}

.copy-button:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.copy-button:active {
    transform: translateY(0);
}

.copy-button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

@media (max-width: 480px) {
    .container {
        padding: 40px 20px;
    }
    
    .ip-display {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    .copy-button {
        font-size: 20px;
        padding: 16px 40px;
    }
}