:root {
    --white: #fdfdfd;
    --lightgreen: #55efc4;
    --green: #1dd1a1;
    --greenhover: #87f5d6;
    --gray: #dfdfe2;
    --lightgray: #f7f7f7;
    --darkgray: #d5d6d8;
    --black: #0e0e0e;
    --lightblack: #3f3f3f;
    --darkblack: #0a0a0a;
}
* {
    margin: 0;
    padding: 0;
    font-family: Poppins, sans-serif;
}
html {
    scroll-behavior: smooth;
}
/* kreyframes */
@keyframes fade {
    from {
        background-color: var(--lightgreen);
    }
    to {
        background-color: var(--green);
    }
}

/* media */
@media all and (max-width: 800px) {
    body {
        display: grid;
        grid-template-columns: auto;
        grid-template-rows: repeat(4, 1fr) auto;
        grid-template-areas:
            "nav"
            "nav"
            "nav"
            "nav"
            "content";
    }
    nav {
        width: 100%;
        grid-area: nav;
        animation: fade 6s ease-in-out infinite alternate;
        display: flex;
        flex-flow: column nowrap;
        align-content: center;
        -webkit-box-shadow: 0px 0px 20px 5px rgba(0,0,0,0.08);
        -moz-box-shadow: 0px 0px 20px 5px rgba(0,0,0,0.08);
        box-shadow: 0px 0px 20px 5px rgba(0,0,0,0.08);
    }
    nav a {
        text-align: center;
    }
    #container {
        grid-area: content;
        display: flex;
        flex-flow: column nowrap;
    }
    .formData {
        width: 80%;
    }
    #modeButton, #moveButton {
        right: 0;
    }
    #moveButton {
        margin-bottom: 48px;
    }
}
@media all and (min-width: 800px) {
    body {
        display: grid;
        grid-template-columns: 15% auto 15%;
        grid-template-rows: auto auto;
        grid-template-areas:
            "nav nav nav"
            ". content .";
    }
    nav {
        position: fixed;
        width: 100%;
        height: 60px;
        grid-area: nav;
        animation: fade 6s ease-in-out infinite alternate;
        display: flex;
        flex-flow: row nowrap;
        justify-content: space-evenly;
        -webkit-box-shadow: 0px 0px 20px 5px rgba(0,0,0,0.08);
        -moz-box-shadow: 0px 0px 20px 5px rgba(0,0,0,0.08);
        box-shadow: 0px 0px 20px 5px rgba(0,0,0,0.08);
    }
    #container {
        grid-area: content;
        margin-top: 120px;
        margin-bottom: 60px;
        -webkit-box-shadow: 0px 0px 15px 5px rgba(0,0,0,0.08);
        -moz-box-shadow: 0px 0px 15px 5px rgba(0,0,0,0.08);
        box-shadow: 0px 0px 15px 5px rgba(0,0,0,0.08);
        display: flex;
        flex-flow: column nowrap;
    }
    .formData {
        width: 60%;
    }
    #modeButton, #moveButton {
        left: 0;
    }
    #moveButton {
        margin-left: 48px;
    }
}
@media all and (max-width: 1000px) {
    #definicja div {
        display: grid;
        grid-template-columns: auto;
        grid-template-rows: auto auto auto;
        row-gap: 20px;
    }
    #objawy div {
        display: grid;
        grid-template-columns: auto;
        grid-template-rows: auto auto;
        row-gap: 20px;
    }
}
@media all and (min-width: 1000px) {
    #definicja div {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: auto;
        column-gap: 30px;
    }
    #objawy div {
        display: grid;
        grid-template-columns: 2fr 3fr;
        grid-template-rows: auto;
        column-gap: 30px;
    }
}

/* content */
header, article, footer {
    padding: 40px 60px 40px 60px;
}
#up {
    background-image: url("./src/bg.jpg");
    background-position: 10% 0;
    background-size: cover;
}
header {
    display: flex;
    flex-direction: row-reverse;
    margin-top: 120px;
}
header h1 {
    color: white;
}
nav a {
    font: bold 1.2em Roboto, sans-serif;
    color: var(--white);
    line-height: 58px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
}
nav a::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background-color: white;
    transition: width 300ms ease-in-out;
}
nav a:hover::after {
    width: 100%;
    transition: width 300ms ease-in-out;
}
article div {
    margin-top: 20px;
}
article div p {
    justify-self: stretch;
}
footer div {
    margin-top: 20px;
    display: flex;
    flex-flow: row nowrap;
    align-items: center;
}
footer div:nth-child(2) img {
    width: 32px;
    height: 32px;
}
footer div a {
    cursor: pointer;
    font-size: 1.1em;
    margin-left: 10px;
    text-decoration: none;
}
form {
    margin-top: 40px;
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    text-align: center;
}
form h3 {
    margin-bottom: 10px;
}
.formData {
    border: 1px solid;
    
    margin-top: 10px;
    padding: 10px 20px 10px 20px;
    display: flex;
    flex-flow: column nowrap;
    align-items: flex-start;
    transition: background-color 360ms ease-in-out;
}
.formData label {
    display: block;
    text-align: left;
    font-size: 0.9em;
}
.formData input, .formData textarea {
    width: 100%;
    border: none;
    background: none;
    outline: none;
    font-size: 0.9em;
    margin-top: 10px;
    padding: 2px 0 2px 0;
}
#button {
    text-decoration: none;
    display: inline-block;
    padding: 15px 0;
    font-size: 0.9em;
    text-transform: uppercase;
    cursor: pointer;
    margin-top: 10px;
    width: 30%;
    min-width: 120px;
    max-width: 360px;
    font-weight: bold;
    color: white;
    border: none;
    transition: all 360ms ease-in-out;
    animation: fade 6s ease-in-out infinite alternate;
}
#button:hover {
    animation: none;
    background-color: var(--greenhover);
}
footer div:last-child {
    display: flex;
    flex-flow: column nowrap;
    margin-top: 40px;
}
footer div:last-child p {
    margin-top: 5px;
}
#modeButton, #moveButton {
    bottom: 0;
    position: fixed;
    width: 48px;
    height: 48px;
    cursor: pointer;
    outline: none;
    border: none;
    padding: 8px;
    transition: background-color 360ms ease-in-out;
}
#moveButton {
    width: 32px;
    height: 32px;
}
#modeImg {
    width: 100%;
    height: 100%;
}
#moveImg {
    width: 100%;
    height: 100%;
}

/* light mode */
body.light {
    background-color: var(--white);
    color: var(--black);
}
#container.light {
    background-color: white;
}
#modeButton.light, #moveButton.light {
    background-color: white;
}
#modeButton.light:hover, #moveButton.light:hover {
    background-color: var(--gray);
} 
footer.light {
    background-color: var(--lightgray);
}
footer.light div a {
    color: var(--black);
}
.formData.light {
    border-color: var(--darkgray);
}
.formData.light:hover {
    background-color: var(--white);
}
.formData.light input, .formData.light textarea {
    color: var(--black);
}
footer div:last-child p.light {
    color: var(--darkgray);
}

/* dark mode */
body.dark {
    background-color: black;
    color: white;
}
#container.dark {
    background-color: var(--black);
}
#modeButton.dark, #moveButton.dark {
    background-color: black;
}
#modeButton.dark:hover, #moveButton.dark:hover {
    background-color: var(--lightblack);
} 
#modeImg.dark, #moveImg.dark {
    filter: invert(100%);
}
footer.dark {
    background-color: var(--darkblack);
}
footer.dark div img {
    filter: invert(100%);
}
footer.dark div a {
    color: white;
}
.formData.dark {
    border-color: var(--lightblack);
}
.formData.dark:hover {
    background-color: var(--black);
}
.formData.dark input, .formData.dark textarea {
    color: white;
}
footer div:last-child p.dark {
    color: var(--lightblack);
}