:root {
    --primary-color: #595959;
    --secondary-color: #2c2c2c;
    --background-color: #fefbf1; 
    --button-focus: #fffffd;
}

html {
    height: -webkit-fill-available;
    width: -webkit-fill-available;
}

body {
    background-image: url(./images/talie-site-bg-new.jpg);
    background-position: center;
    background-size: cover;
    margin: 1rem;
    white-space: none;
    overflow-x: hidden;
    overflow-y: hidden;
    height: -webkit-fill-available;
    width: -webkit-fill-available;
}


#header-container {
    display: grid;
    grid: auto / 1fr 1fr 1fr;
    width: 100%;
}

#back-container {
    grid-column: 1 / 2;
    display: flex;
    height: auto;
}

#back-contents-container {
    align-items: start;
}

#back-contents-container a {
    display: flex;
    color: var(--secondary-color);
}

#back {
    display: inline-block;
    margin-left: 0.2rem;
}

#logo-container {
    grid-column: 2 / 3;
    height: auto;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
}

#logo-img {
    width: 35%;
    height: auto;
}

.icons-group {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: end;
    align-content: end;
}

.icon {
    height: 20px;
    width: 20px;
    margin-left: 18px;
}

.icon-svg {
    height: 100%;
    width: auto;
    opacity: 1;
    transition: opacity 300ms ease-out;
}

.icon-svg:hover {
    opacity: 0.5;
    transition: opacity 300ms ease-out;
}

#fb-icon {
    margin-left: 0;
}


#main-container {
    width: calc(100% - 2rem);
    height: 60%;
    display: flex;
    justify-content: center;
    position: absolute;
    top: 25%;
    bottom: 25%
}


#form-container {
    width: 45%;
    height: auto;
    margin: 0 auto;
    
}

input, textarea {
    -webkit-appearance: none;
    border-radius: 0;
    font-family: 'Kanit', sans-serif;
}

#form {
    display: grid;
    grid: auto / 1fr 1fr;
    height: 100%;
    row-gap: 1rem;
    -webkit-appearance: none;
}

.contact-form {
    grid-column: 1 / 3;
    padding-left: 1rem;
    font-size: 1.2rem;
    border-bottom: 0.2rem solid var(--secondary-color);
    color: var(--secondary-color);
    background: none;
    -webkit-appearance: none;
}

.contact-form:focus {
    outline: none;
    background: var(--button-focus);
}

.contact-form::placeholder {
    opacity: 1;
    color: var(--secondary-color);
}

#submit-btn {
    grid-column: 1 / 3;
    -webkit-appearance: none;
}

#message {
    resize: none;
    padding-top: 0.5rem;
}

#submit {
    border-bottom: none;
    background-image: url(./images/main-grid-box/nav-bar-bg-img.png);
    color: #fefbf1;
    letter-spacing: 0.25rem;
    padding-left: 0;
    height: 3rem;
    text-align: center;
    transition: letter-spacing 200ms ease-in-out, background-color 200ms ease-in-out;
    -webkit-appearance: none;
    font-weight: 500;
}

#submit:hover {
    background-image: url(./images/main-grid-box/nav-bar-bg-img-hover.png);
    letter-spacing: 0.35rem;
    transition: letter-spacing 200ms ease-in-out, background-color 200ms ease-in-out;
}

@media only screen and (max-width: 768px) and (orientation: portrait) {
    
    #header-container {
        display: grid;
        grid: auto / 1fr;
        width: 100%;
        row-gap: 1.25rem;
        margin-bottom: 2.5rem;
    }

    #back-container {
        grid-column: 1 / 2;
        display: flex;
        height: auto;
        align-items: center;
        margin-left: 0;
    }
    
    #back-contents-container {
        display: inline-flex;
        align-items: center;
    }
    
    #back-contents-container a {
        color: var(--secondary-color);
        margin-left: 2px;
        height: auto;
        width: auto;
    }
    
    #logo-container {
        grid-column: 1 / 2;
        grid-row: 2 / 3;
        height: auto;
        width: 100%;
        display: flex;
        justify-content: center;
    }
    
    #logo-img {
        width: 70%;
        height: auto;
    }
    
    .icons-group {
        justify-content: space-between;
    }

    .icon {
        margin-left: 0;
    }

    #main-container {
        width: 100%;
        height: auto;
        display: flex;
        margin: 0 auto;
        justify-content: center;
        position: relative;
        top: unset;
        bottom: unset;
    }
    
    #form-container {
        width: 80%;
        height: auto;
        margin: 0 auto;
        
    }

    #form {
        row-gap: 1.25rem;

    }

    .contact-form {
        height: 2.5rem;
        padding-left: 0.5rem;
    }

    #message {
        height: 7rem;
    }

    #submit {
        -webkit-appearance: none;    
        font-family: 'Kanit', sans-serif;
    }
}