styles.scss

:root{
    --red-color:#f03e3e;
    --green-color: #37b24d;
    --yellow-color:#f59f00;
    --bg-main:#212529;
    --bg-secondary: #343a40;
}
%flex-container{
    display: flex;
    flex-direction: column;
    align-items: center;
}

*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Bungee', cursive;
}
body{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    text-align: center;
    background-color: var(--bg-main);
    color: var(--yellow-color);
    min-height: 100vh;
}
.title{
    font-size:3rem;
    line-height: 1.4;
    padding: 1.5rem;
}
.container{
    @extend %flex-container;
    justify-content: center;
    padding: 0 1rem;
}
.container-game{
    @extend %flex-container;
    gap: 1.2rem;
    .container-question{
        @extend %flex-container;
        .questions{
            padding: 1.5rem 3rem;
            border-radius: 24px;
            background-color: var(--bg-secondary);
            box-shadow: 0 3px 12px 12px rgba(0, 0, 0, .02);
            .question{
                padding: 0 1rem;
                font-size: 4rem;
                letter-spacing: .15rem;
                transform: scale(1.12);

            }
            .result{
                font-size: 1.5rem;
                line-height: 1.25;
            }
        }
    }
    .container-choices{
        .choices{
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.25rem;
            .choice{
                display: none;
                text-align: center;
                padding: 2rem 2.5rem;
                border-radius: 24px;
                background-color: var(--bg-secondary);
                color: var(--yellow-color);
                box-shadow: 0 3px 12px 12px rgba(0, 0, 0, .02);
                font-size: 1.5rem;
                min-width: 140px;
                line-height: 1.7;
                border:none;
                cursor: pointer;
            }
            .choice:active{
                transform: scale(.97);
                box-shadow: 0 1.5px 6px 6px rgba(0, 0, 0, .02);
            }
        }
    }
}
.score{
    display: none;
    font-size: 1.75rem;
    margin: 1rem 0 0 0;
}
.button{
    .next{
        display:none;
    }

    .next,.start,.easy,.medium,.hard,.mix{
        padding: .75rem 2.25rem;
        border-radius: 24px;
        color: var(--yellow-color);
        border: none;
        font-size: 1.25rem;
        background-color: var(--bg-secondary);
        box-shadow: 0 3px 12px 12px rgba(0, 0, 0, .02);
    }
    .easy,.medium,.hard,.mix{
        min-width: 150px;
    }
    .start:disabled,.next:disabled{
        color: var(--bg-main) !important;
        transition: none;
    }
    .next:active,.start:active,.easy:active,.medium:active,.hard:active,.mix:active{
        transform: scale(.96);
        box-shadow: 0 1.5px 4px 4px rgba(0, 0, 0, .02);
        transition: .1s ease-in-out;
    }
    .difficulty{
        max-width: 400px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        margin-top: 1rem;
        gap: 1rem;
        .easy,.medium,.hard,.mix{
            display: none;
            padding: 1rem 0;
        }
    }
}
footer{
    font-size: 14px;
    padding: .5rem;
}

.header-correct{
    border: 4px solid var(--green-color) !important;
    color: var(--green-color) !important;
    transition: .1s ease-in-out;
    transform: scale(1.02);
}
.header-wrong{
    border: 4px solid var(--red-color) !important;
    color: var(--red-color) !important;
    transition: .1s ease-in-out;
}
@media (max-width:600px){
    .title{
        font-size:2.25rem;
        line-height: 1.4;
        padding: 1.5rem;
    }
    .container{
        padding: 0 1rem;
        margin-top: -3rem;
    }
    .container-game{
        gap: 1.2rem;
        .container-question{
            min-width: 349px;
            .questions{
                max-width: 360px;
                padding: 1.75rem 3rem;
                margin: 0 .5rem;
                border-radius: 24px;
                box-shadow: 0 2px 8px 8px rgba(0, 0, 0, .02);
                .question{
                    max-width: 360px;
                    padding: .5rem 1rem;
                    font-size: 2rem;
                    margin:1.5rem 0;
                    letter-spacing: .05rem;
                    line-height: 1.15;
                    transform: scale(1.5);
                }
                .result{
                    font-size: 1.25rem;
                    line-height: 1.25;
                }
            }
        }
        .container-choices{
            .choices{
                gap: 1rem;
                .choice{
                    display: none;
                    padding: 1rem 1.5rem;
                    box-shadow: 0 2px 8px 8px rgba(0, 0, 0, .02);
                    font-size: 1.5rem;
                    min-width: 100px;
                }
            }
        }
    }
    .score{
        display: none;
        font-size: 1.75rem;
        margin-top: 1rem;
    }
    .button{
        .next{
            display: none;
        }
        .next,.start{
            padding: 1rem 1.5rem;
            border-radius: 24px;
            font-size: 1rem;
        }
    }
}