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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f8ff;
    color: #0a2a66;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

header {
    width: 100%;
    background: #1e4ed8;
    color: white;
    padding: 20px;
    text-align: center;
}

main {
    background: white;
    width: 500px;
    padding: 30px;
    margin-top: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);

    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

#buttons-game {
    display: flex;
    gap: 15px;
}

button {
    background: #1e4ed8;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #163bb3;
}

#resultados {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

#historial {
    background: #eef4ff;
    padding: 10px;
    border-radius: 6px;
    min-height: 80px;
}

#btn-reiniciar {
    background: #0a2a66;
}

#btn-reiniciar:hover {
    background: #061a40;
}