@import url('https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,200..1000;1,200..1000&display=swap');

:root {

    --primary-hue: 243.2;
    --primary-saturation: 100%;
    --primary-lightness: 37.3%;
    --primary-color: hsla(var(--primary-hue), var(--primary-saturation), var(--primary-lightness), 1);

    --soft-hue: 33.3;
    --soft-saturation: 100%;
    --soft-lightness: 91.1%;
    --soft-color: hsla(var(--soft-hue), var(--soft-saturation), var(--soft-lightness), 1);

    --light-hue: 209.4;
    --light-saturation: 100%;
    --light-lightness: 50%;
    --light-color: hsla(var(--light-hue), var(--light-saturation), var(--light-lightness), 1);

    --dark-hue: 249.5;
    --dark-saturation: 91.3%;
    --dark-lightness: 13.5%;
    --dark-color: hsla(var(--dark-hue), var(--dark-saturation), var(--dark-lightness), 1);

    --accent-hue: 181.7;
    --accent-saturation: 100%;
    --accent-lightness: 65.5%;
    --accent-color: hsla(var(--accent-hue), var(--accent-saturation), var(--accent-lightness), 1);

    --text-color: hsla(var(--primary-hue), var(--primary-saturation), var(--primary-lightness), 1);
    --background-color: hsla(var(--soft-hue), var(--soft-saturation), 99%, 1);

    --image-gradient: fixed linear-gradient(180deg, var(--background-color) 0, var(--background-color) 5rem, hsla(var(--soft-hue), 0%, 100%, 0.5) calc(100vh - 8em), hsla(var(--soft-hue), 0%, 100%, 0.35) 100%);
}
* {
    box-sizing: border-box;
}
html {
    background-color: var(--background-color);
    font-size: 16px;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}
body {
    background-image: url('headerbg.svg');
    background-position: 16% -2rem;
    background-repeat: no-repeat;
    background-size: auto 14rem;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    font-family: 'Nunito', sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-size: larger;
    font-style: normal;
    margin: 0 auto;
    min-height: 100vh;
    padding: 2rem 0 0 0;
    scroll-behavior: smooth;
}
:where(h1) {
  margin-block: 0.67rem;
  font-size: 2rem;
}
header {
    background-color: hsla(var(--accent-hue), var(--accent-saturation), var(--accent-lightness), 0);
    border-color: var(--light-color);
    border-style: solid;
    border-width: 0px;
    border-bottom-width: 0px;
    display: flex;
    justify-content: flex-start;
    margin: 0 0 2rem 0;
    min-height: 10rem;
    padding: 0 15% 2em 15%;
    position: sticky;
    top: 0;
    transition: background-color 0.01s ease-in-out, border-color 0.01s ease-in-out;
    width: 100%;
    z-index: 2;
}
header.scrolled {
    background-color: var(--accent-color);
    border-bottom-width: 1px;
    min-height: 0;
    padding-bottom: 1em;
    transition: background-color 0.125s ease-in-out, border-color 0.25s ease-in-out;
}
header h1 {
    color: var(--text-color);
    font-size: 2em;
    line-height: 1;
    margin: 2rem 1em 0 0;
/*
    max-width: 10em;
*/
    position: sticky;
    top: 0;
}
/*
header h1 span {
    display: block;
}
*/
header nav {
    align-content: flex-start;
    display: flex;
    flex-direction: row;
    flex-grow: 1;
    flex-wrap: wrap;
    margin: 0.5rem 0 0 0.5rem;
}
header nav ul {
    align-content: flex-start;
    display: flex;
    flex-direction: row;
    flex-grow: 1;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    overflow: hidden;
    padding: 2em 0 0 0;
    text-align: center;
    width: 100%;
}
header nav li {
    display: block;
    flex-grow: 1;
    margin: 0;
    padding: 0;
}
header nav li a {
    box-sizing: content-box;
    color: var(--text-color);
    display: block;
    font-weight: bolder;
    margin: 0 0.25em;
    padding: 0 0.5em 0.5em 0.5em;
    text-decoration: none;
}
/*
header nav li.selected a {
    border-bottom-width: 0;
}
*/
header nav li:hover a, header nav li a.selected {
    text-decoration: underline
}
main {
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0 0 8rem 0;
    overflow: hidden;
    padding: 0;
    z-index: 1;
}
main h1 {
    font-size: 3rem;
    font-weight: 700;
    margin: 1.5rem 0 0.5rem 0;
    text-align: center;
}
article {
    margin: 0 0 2rem 0;
    padding: 5rem 0 1rem 0;
}
section {
    margin: 0 auto;
    padding: 1rem 0;
}
section > h1, section > h2, section > p, section > ul {
    margin-left: auto;
    margin-right: auto;
    max-width: 50rem;
}
section.details {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
section.details h1, section.details h2, section.details p {
    align-self: stretch;
    flex: 1 0 100%;
    max-width: none;
    text-align: center;
}
section.details details {
    border: 1px solid hsla(var(--primary-hue), 50%, 15%, 0.1);
    border-radius: 0.5em;
    box-shadow: -0.25em 0.25em 0.5em hsla(var(--primary-hue), 50%, 15%, 0.1);
    flex: 1 1 auto;
    margin: 1rem 2rem;
    max-width: 40rem;
    min-width: 20rem;
    padding: 1rem;
    position: relative;
    width: 25vw;
}
details summary {
    cursor: pointer;
    margin: 4rem 0 1rem 0;
    text-align: center;
}
details svg.svg-inline--fa {
    color: var(--light-color);
    display: block;
    font-size: 3rem;
    left: 0;
    margin-right: 0.5em;
    position: absolute;
    text-align: center;
    top: 1rem;
    width: 100%;
}
.kuva h1, .kuva h2, .kuva p, .kuva li {
    text-shadow: -1px 1px 2px hsla(var(--soft-hue), 50%, 100%, 0.5);
}
.kuva details {
   background-color: var(--background-color);
}
#top .kuva {
    /* Photo by daniel-chackalov on Unsplash */
/*
    background: var(--image-gradient), fixed url('pics/daniel-chekalov-OxU08SFhPbI-unsplash.jpg') center/cover no-repeat;
*/
    /* Photo by iSawRed on Unsplash */
    background: var(--image-gradient), fixed url('pics/isawred-74WXzGOvsfk-unsplash.jpg') center/cover no-repeat;

    /* Photo by kaboompics on Pixabay */
/*
    background: var(--image-gradient), fixed url('pics/kaboompics-man-791049_1920-pixabay.jpg') center/cover no-repeat;
*/

    /* Photo by This_is_Engineering on Pixabay */
/*
    background: var(--image-gradient), fixed url('pics/This_is_Engineering-laptop-8499942_1920-pixabay.jpg') center/cover no-repeat;
*/

    /* Photo by Антон Дмитриев on Unsplash */

/*
    background: var(--image-gradient), fixed url('pics/ehmitrich-Jt01DmHeiqM-unsplash.jpg') center/cover no-repeat;
*/

}
#kouluttajalle {
    background-color: hsla(var(--primary-hue), 75%, 15%, 0.025);
    border-color: hsla(var(--primary-hue), 50%, 50%, 0.2);
    border-style: solid;
    border-width: 1px 0 1px 0;
}
#kouluttajalle .kuva {
    /* Photo by ofspace on Unsplash */
    background: var(--image-gradient), scroll url('pics/ofspace-llc-kYCPfNps5Rg-unsplash.jpg') center/cover no-repeat;
}
#tietoa .kuva {
    /* Photo by Vika_Glitter on Pixabay */
    background: var(--image-gradient), fixed url('pics/Vika_Glitter-distance-learning-6974511_1920-pixabay.jpg') center/cover no-repeat;
}
#yhteys {
    background-color: var(--accent-color);
    margin-bottom: 0
}
details summary {
    font-weight: 700;
    font-size: 1.25em;
    list-style: none;
}
strong {
    color: var(--light-color);
}
.rare {
    color: var(--rare-color);
}
a.button {
    background-color: var(--primary-color);
    border-radius: 3.125rem !important;
    border-style: solid;
    border-width: 0;
    color: #ffffff;
    display: inline-block;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.03125rem;
    margin: 1rem 0;
    padding: 0.9375rem 1.5rem;
    text-decoration: none;
    transition: all 0.2s !important;
    text-align: center;
}
footer {
/*
    background: linear-gradient(
        to bottom,
        hsla(var(--accent-hue), 0%, 100%, 1) 0%,
        hsla(var(--accent-hue), 50%, 60%, 0.75) 2em
    );
*/
    background-color: hsla(var(--primary-hue), var(--primary-saturation), var(--primary-lightness), 1);
    bottom: 0;
    font-size: smaller;
    text-align: center;
    margin: 0;
    overflow: hidden;
    padding: 3rem 3rem 2rem 3rem;
    position: fixed;
    width: 100%;
}
footer ul {
    float: right;
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}
footer a {
    color: hsla(var(--primary-hue), 50%, 15%, 0.9);
    line-height: 2;
    padding: 0.5em;
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}
footer img {
    float: left;
    height: 3em;
    opacity: 1;
    vertical-align: middle;
}
@media (max-width: 60em) {

    body {
        background: transparent;
    }
    header {
        justify-content: right;
        background: transparent;
        margin: 0;
        padding: 0;
        overflow: visible;
        position: static;
        flex-direction: column-reverse;
    }
    header.scrolled {
        border-bottom-width: 0;
        border-color: transparent;
    }
    header h1 {
        flex-grow: 1;
        margin: 0.5rem 0;
    }
    header nav {
        flex-grow: 1;
        margin: 0;
        padding: 0;
    }
    header nav ul {
        align-content: flex-start;
        background-color: var(--background-color);
        padding: 0;
        right: 1em;
        text-align: left;
    }
    header nav li {
        font-size: smaller;
        margin: 0.5rem 0;
    }
    header nav li a {
        padding: 0.5rem 1rem 0.5rem 0;
    }
    main article {
        padding: 0 2em;
    }
    main h1 {
        font-size: 2em;
    }
    main h2 {
        font-size: 1.5em;
    }
    section.details {
        flex-direction: column;
        align-items: center;
    }
    section.details details {
        width: 90%;
        max-width: none;
        margin: 1rem 0;
    }
}