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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    text-align: center;
    padding: 2rem;
}

header h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.button-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.btn {
    padding: 1rem 2rem;
    width: 300px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    background: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    background: #f8f9fa;
}

.btn:active {
    transform: translateY(-1px);
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .btn {
        width: 250px;
        padding: 0.8rem 1.5rem;
    }
}