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

/* BODY */
body {
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, #2196f3, #0d47a1);
    color: white;
    text-align: center;
}

/* CONTAINER (TENGAH LAYAR) */
.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* LOGO */
.logo {
    width: 10vw;
    max-width: 120px;
    margin-bottom: 10px;
}

/* JUDUL */
h1 {
    font-size: 5vw;
    color: yellow;
    text-shadow: 2px 2px 5px black;
    margin: 10px 0;
}

h2 {
    font-size: 2.5vw;
    margin: 5px 0;
}

h3 {
    font-size: 2vw;
    margin: 5px 0;
}

h4 {
    font-size: 1.5vw;
    color: #ffd700;
    margin-bottom: 20px;
}

/* TOMBOL */
.buttons {
    display: flex;
    justify-content: center;
    gap: 3vw;
    margin-top: 5vh;
}

/* STYLE TOMBOL */
.btn {
    font-size: 3vw;
    padding: 3vh 5vw;
    border: none;
    border-radius: 1.5vw;
    cursor: pointer;
    color: white;
    font-weight: bold;
    box-shadow: 0 0.8vh 0 rgba(0,0,0,0.3);
    transition: all 0.2s ease;
}

/* EFEK TEKAN */
.btn:active {
    transform: scale(0.95);
    box-shadow: 0 0.3vh 0 rgba(0,0,0,0.3);
}

/* WARNA */
.benar {
    background-color: #4caf50;
}

.salah {
    background-color: #f44336;
}

/* RESPONSIVE HP */
@media (max-width: 600px) {

    h1 { font-size: 8vw; }
    h2 { font-size: 5vw; }
    h3 { font-size: 4vw; }
    h4 { font-size: 3.5vw; }

    .btn {
        font-size: 6vw;
        padding: 4vh 6vw;
    }

    .buttons {
        flex-direction: column;
        gap: 4vh;
    }

    .logo {
        width: 20vw;
    }
}