*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border: none;
    text-decoration: none;
    list-style: none;
    font-family: 'Poppins', Arial, Helvetica, sans-serif;
}

body{
    width: 100%;
    height: 110vh;
    padding: 3rem;
}

.main-content{
    width: 100%; height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 30px;
}

.main-content .title{
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 1.2;
}

.main-content .table-content{
    height: 100%;
    width: 100%;
    display: flex;
    gap: 20px;
}

.table-content .periodic-table{
    background-color: #fbfbfb;
    border-radius: 20px;
    box-shadow: 0 0 15px rgba(0,0,0,0.3);
    flex: 0.8;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-around;
}

.periodic-table .elements{
    display: grid;
    place-content: center;
    gap: 20px;
    grid-template-columns: repeat(4,110px);
    grid-template-rows: repeat(5, 110px);
    width: 100%; height: 100%;
}

.elements .element{
    padding: 5px 10px;
    display: flex;
    flex-direction: column;
    position: relative;
    border-radius: 5px;
    border: 1px solid #333;
    transition: all 0.3s ease 0s;
}

.elements .element:hover{
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(0,0,0,0.3);
}

.element.g13{
    background-color: #ADDFEC;
}

.element.g14{
    background-color: #9FE5D3;
}

.element.g15{
    background-color: #8CED8C;
}

.element.g16{
    background-color: #E6BCE6;
}

.element.selected{
    z-index: -10;
}

.element .atomic-number{
    margin-bottom: 0;
    font-size: 17px;
    line-height: 0.8;
}

.element .symbol{
    font-size: 30px;
    font-weight: 700;
    line-height: 1.3;
}

.element .element-name{
    font-size: 17px;
    line-height: 1;
    font-weight: 500;
}

.element .element-mass{
    font-size: 16px;
    line-height: 1;
    margin-top: 8px;
}

.element-info{
    width: 100%; height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 70px;
}


.bottom-info{
    width: 400px; height: fit-content;
    padding: 1rem;
    border-radius: 20px;
    background-color: #9a9a9a;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: space-around;
}

.option{
    width: 70px;
    height: 70px;
    border-radius: 10px;
    font-size: 16px;
    padding: 7px;
    background-color: #dfdfdf;
    transition: all 0.3s ease 0s;
    cursor: pointer;
}

.option:hover{
    background-color: #bfbfbf;
}

.option.selected{
    background-color: #343434;
    color: #6a6a6a;
}

.element-card.activated{
    box-shadow: 10px 8px rgba(0,0,0,0.6);
}

.element-card .default{
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: #454545;
}

.element-card{
    width: 400px;
    height: 450px;
    background-color: #dadada;
    border-radius: 20px;
    box-shadow: 7px 5px rgba(0,0,0,0.5);
    
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    transition: all 0.3s ease 0s;
    position: relative;
}

.element-card.activated{
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
}

.element-card .atomic-number{
    font-size: 2.5rem;
    font-weight: 600;
    line-height: 1.2;
}

.element-card .symbol{
    font-size: 5rem;
    font-weight: 800;
    line-height: 1.8;
}

.element-card .element-name{
    font-size: 2.5rem;
    font-weight: 500;
    line-height: 0.5;
    margin-bottom: 30px;
}

.element-card .element-mass{
    font-size: 2rem;
    font-weight: 400;
    color: #343434;
    margin-bottom: 10px;
}

.element-card .element-en{
    font-size: 1.8rem;
    font-size: 500;
    color: #545454;
}

.element-card .element-electrons{
    position: absolute;
    top: 2rem;
    right: 3rem;
}

.element-electrons li{
    font-size: 1.5rem;
    color: #343434;
}

.table-content .right-section{
    background-color: #fff;
    box-shadow: 0 0 15px rgba(0,0,0,0.2);

    flex: 0.2;
    border-radius: 10px;
    padding: 3rem 1rem;
}

.right-section .litle-title{
    font-size: 2rem;
    margin-bottom: 20px;
}

.right-section textarea{
    width: 100%;
    height: 80%;
    resize: none;
    border: 1px solid #bbb;
    padding: 10px;
    border-radius: 10px;
    font-size: 1rem;
}

@media screen and (max-width: 1200px){
    body{
        height: fit-content;
    }
    .main-content .table-content{
        flex-direction: column;
    }
    .periodic-table{
        flex-direction: column;
        gap: 50px;
    }
}


@media screen and (max-width: 640px){
    .main-content .title{
        font-size: 2rem;
        text-align: center;
    }
    .periodic-table .elements{
        gap: 20px;
        grid-template-columns: repeat(4,80px);
        grid-template-rows: repeat(5, 80px);
    }
    .elements .element{
        padding: 3px 7px;
    }

    .element .atomic-number{
        font-size: 15px;
        line-height: 0.8;
    }
    
    .element .symbol{
        font-size: 20px;
        font-weight: 700;
        line-height: 1.3;
    }
    
    .element .element-name{
        font-size: 13px;
        line-height: 1;
        font-weight: 500;
    }
    
    .element .element-mass{
        font-size: 14px;
        line-height: 1;
        margin-top: 8px;
    }
    .element-card{
        width: 280px;
        height: 400px;
        padding: 2rem;
    }
    .element-card .atomic-number{
        font-size: 2rem;
    }
    
    .element-card .symbol{
        font-size: 4rem;
        font-weight: 800;
        line-height: 1.8;
    }
    
    .element-card .element-name{
        font-size: 2.2rem;
        font-weight: 500;
        line-height: 0.5;
        margin-bottom: 30px;
    }
    
    .element-card .element-mass{
        font-size: 1.8rem;
        font-weight: 400;
        color: #343434;
        margin-bottom: 10px;
    }
    .element-card .element-en{
        font-size: 1.5rem;
        font-size: 500;
        color: #545454;
    }
    
    .element-card .element-electrons{
        position: absolute;
        top: 2rem;
        right: 2rem;
    }
    
    .element-electrons li{
        font-size: 1.3rem;
        color: #343434;
    }
    .bottom-info{
        width: 300px; 
        padding: 0.8rem;
    }
    
    .option{
        width: 60px;
        height: 60px;
        font-size: 15px;
        padding: 7px;
        background-color: #dfdfdf;
        transition: all 0.3s ease 0s;
        cursor: pointer;
    }
    .table-content .right-section{
       display: none;
    }

}

@media screen and (max-width: 500px){
    .table-content .periodic-table{
        background-color: transparent;
        box-shadow: none;
    }
    .periodic-table .elements {
        grid-template-columns: repeat(2, 110px); 
        grid-template-rows: auto; 
        justify-content: center; 
    }

}