@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap');

* {
    font-family: "Montserrat", sans-serif; 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

body {
    display: flex;
    align-items: center; 
    justify-content: center; 
    width: 100%;
    height: 100vh; 
    background-color: #18181b; 
}

#container {
    display: flex; 
    align-items: center; 
    gap: 3.5rem; 
    flex-wrap: wrap; 
}

#img img {
    width: 28rem; 
    max-width: 100%; 
    height: auto; 
}

#calculator {
    display: flex;
    flex-direction: column; 
    gap: 1.5rem; 
    padding: 1.5rem; 
    color: #f8fafc; 
    background-color: #262626; 
    border-radius: 8px; 
    width: 45rem; 
    max-width: 90%; 
}

#form {
    display: flex;
    flex-direction: column; 
    gap: 2rem; 
}

#title {
    font-size: 1.8rem; 
    position: relative; 
}

#title::after {
    position: absolute; 
    content: '';
    background-color: #ff00c6; 
    width: 28.3rem; 
    height: 2px; 
    bottom: 0; 
    left: 0; 
    border-radius: 3px; 
}

.input-box label {
    font-size: 1rem; 
    color: #cbd5e1; 
    font-weight: 500; 
}

.input-row {
    display: flex; 
    justify-content: space-between; 
    gap: 1.2rem; 
}

.input-box {
    flex: 1; 
}

.input-box.extra {
    flex: 0; 
}

.input-field {
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    background-color: #3f3f46; 
    padding: 0.3rem; 
    border-radius: 3px; 
    margin-top: 3px; 
    width: 100%; 
}

.input-field input, .input-field select {
    background-color: transparent; 
    border: none; 
    width: 100%; 
    font-size: 1rem; 
    color: #f8fafc; 
    padding: 0 0.3rem; 
    outline: none; 
}

.input-field input:focus, .input-field select:focus {
    background-color: transparent; 
}

.input-field select {
    color: #f8fafc; 
}

.input-field select option {
    background-color: #3f3f46; 
    color: #f8fafc; 
}

.input-field select:focus {
    background-color: #3f3f46; 
    color: #18181b; 
}

.input-field select:focus option {
    background-color: #3f3f46; 
    color: #f8fafc; 
}

.input-field input::-webkit-outer-spin-button,
.input-field input::-webkit-inner-spin-button {
    appearance: none; 
}

#calculate {
    border: none; 
    font-size: 1rem; 
    font-weight: bold; 
    background-color: #ff00c6; 
    color: #f8fafc; 
    padding: 0.3rem 0; 
    border-radius: 3px; 
    cursor: pointer; 
}

#infos {
    margin-top: 1rem; 
}

#result {
    display: flex; 
    gap: 1.5rem; 
    align-items: center; 
    border-top: 1px solid #ffffff34; 
    padding: 0.75rem 0; 
}

#bmi {
    display: flex; 
    align-items: center; 
    flex-direction: column; 
    font-size: 2.25rem; 
}

#bmi span:last-child {
    font-size: 1rem; 
    color: #cbd5e1; 
}

#description {
    width: 15.5rem; 
    font-size: 2.75rem; 
}

#more_info {
    border-top: 1px solid #ffffff34; 
    padding-top: 1.5rem; 
}

#more_info a {
    color: #ff00c6; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    gap: 0.6rem; 
    font-size: 1.20rem; 
    text-decoration: none; 
    transition: color 0.5s; 
}

#more_info a:hover {
    color: #cbd5e1; 
}

.hidden {
    display: none; 
}

.unit {
    font-size: 0.7em; 
}

/* Media Queries */
@media screen and (max-width: 1024px) {
    #img {
        display: none;
    }

    #container {
        flex-direction: column;
        align-items: center;
        width: 100%; 
        padding: 0;
        margin: 0 auto;
        box-sizing: border-box;
    }

    #calculator {
        width: calc(100% - 2rem);
        margin: 0 auto;
        padding: 1rem;
        box-sizing: border-box; 
    }

    #title {
        font-size: 1.5rem;
    }

    #bmi {
        font-size: 1.8rem;
    }

    #description {
        font-size: 2rem;
    }

}

@media screen and (max-width: 500px) {
    #container {
        width: 100%;
        align-items: center;
        padding: 0;
        margin: 0;
        box-sizing: border-box; 
        overflow-x: hidden; 
    }

    #calculator {
        width: 100%;
        border-radius: 0;
        padding: 1rem;
        margin: 0;
        box-sizing: border-box; 
    }

    #title {
        font-size: 1.2rem;
    }

    #title::after {
        width: 100%;
    }

    .input-row {
        flex-direction: column;
        width: 100%;
        box-sizing: border-box;
    }

    .input-box {
        margin-bottom: 1rem;
        width: 100%;
    }

    .input-box:first-child {
        margin-bottom: 1.5rem;
    }

    .input-field input,
    .input-field select {
        font-size: 0.8rem;
        width: 100%; 
        box-sizing: border-box;
    }

    #calculate {
        font-size: 0.8rem;
    }

    #description {
        font-size: 1.8rem;
        width: 100%;
        text-align: center;
    }

    #more_info a {
        font-size: 0.9rem;
    }
}