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

body {
font-family: Arial, sans-serif;
color: #111010;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 100vh;
text-align: center;
padding: 20px;
background: url('../background/bg-portrait.jpg') no-repeat center center/cover;
}

/* Landscape mode background */
@media (orientation: landscape) {
    body {
        background: url('../background/bg-landscape.jpg') no-repeat center center/cover;
    }
}


.logo-container {
    margin-bottom: 5px;
    width: 300px;
    height: 150px;
    background: url('../background/logo.png') no-repeat center center/contain;
}
.container {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px 40px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 700px;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.start-btn {
    background-color: #ff6b6b;
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.start-btn:hover {
    background-color: #ff4d4d;
}

@media (max-width: 1024px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 15px 20px;
    }

    h1 {
        font-size: 2rem;
    }

    .start-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .logo-container {
        width: 200px;
        height: 120px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 10px 15px;
    }

    h1 {
        font-size: 1.8rem;
    }

    .start-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .logo-container {
        width: 200px;
        height: 100px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .start-btn {
        padding: 5px 10px;
        font-size: 0.75rem;
    }

    .logo-container {
        width: 200px;
        height: 80px;
    }
}