body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f7f8fc, #e0e4ec);
    color: #2c3e50;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
    background-color: #1e2a36;
}

.container {
    padding: 40px;
    background: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-radius: 16px;
    max-width: 480px;
    margin: auto;
    margin-top: 200px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

p {
    font-size: 1.1rem;
    color: #555;
}

.spinner {
    margin: 30px auto;
    width: 40px;
    height: 40px;
    border: 4px solid #ccc;
    border-top-color: #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}