body {
    font-family: Arial, sans-serif;
    text-align: center;
    /* background-color: hwb(0 87% 13% / 0.929); */
    margin: 0;
    padding: 0; 
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;

    background-image: url(https://github.com/jxnyxng/1rm-calculator/blob/main/image.jpg?raw=true);
    object-fit: cover;
}

h1 {
    margin-top: 30px;
    color: #ffffff;
    font-size: 2rem;
}

/* 우측 결과창 제목 */
h2 {
    margin-top: 30px;
    color: #fdfdfd;
    font-size: 1.5rem;
}

p {
    margin-top: 3%;
    color: #a8aeff;
    font-size: 1rem;
}

span { 
    font-weight: 550;
    color: #6184ff;
    font-size: 1.1rem;
}


.container { 
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
    width: 100%;
}

.input-container, .output-container {  
    border-radius: 45px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    backdrop-filter: blur(1px);
    -webkit-backdrop-filter: blur(1px); 
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

    max-width: 400px; 
    height: 650px;
    width: 80%;
    margin: 1%; 

    padding: 2%;
    border-radius: 20px;  
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
 

/* 입력 폼 */
.Calculator-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 100%;
}

/* 개별 입력 블록  */
.Calculator-container div {
    background: rgb(244, 244, 244);
    margin: 2%;
    padding: 20px;
    border-radius: 20px; 
    box-shadow: 0 0px 25px rgba(0, 0, 0, 0.1);
    width: 80%; 
    text-align: center;
}

/* 결과 컨테이너 */
.result-container, .total-1RM { 
    height: auto;
    width: 80%;
    max-width: 400px;
    margin: 15px 0;
    padding: 30px;
    background: rgb(244, 244, 244);    
    border-radius: 45px;

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

.total-1RM{
    font-weight: 600;
    font-size: xx-large;

}

span{
    font-size: large;
    font-weight: 600;
}
 
input { 
    text-align: center;
    height: 30px;
    width: 30%;

    margin: 5px 0;
    margin-left: 4%;
    margin-top: 2%;
    border: 3px solid  hsl(33, 84%, 15%);
    border-radius: 40px;
    font-size: 1rem;
}

/* 결과 항목 스타일 */
.result-item {
    border-radius: 25px; 
    padding: 10px;
    width: 90%;
    background: rgb(244, 244, 244, 0.8);    
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    font-weight: bold;
    font-size: large;
}
 

/* 모바일 화면 최적화 */
@media screen and (max-width: 768px) {
    h1 {
        font-size: 1.8rem; 
        margin-top: 20px;
    }

    .container {
        flex-direction: column; 
        align-items: center;
    }

    .input-container, .output-container {
        padding : 2%;
        width: 85%; 
        max-width: 330px;
        height: auto; 
    }

    .Calculator-container div {
        width: 85%;
    }

    input {
        width: 40%;
    }

    .total-1RM{
        width: 70%;
    }
}