/* CSS for AQart's home page (common resources).

   Copyright (c) 2023-now Air Quality And Related Topics.

   This work is licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International license (CC
   BY-SA 4.0). The full text of this license can be found at https://creativecommons.org/licenses/by-sa/4.0/.

*/

/*--------------*/
/* Color scheme */
/*--------------*/

:root {
    --color-fg-medium: lightcoral;
    --color-fg-hard: crimson;
    --color-bg-soft: floralwhite;
    --color-bg-medium: cornsilk;
    --color-bg-hard: darksalmon;
}

/*-------------------*/
/* Overal formatting */
/*-------------------*/

* {
    box-sizing: border-box;
}

body {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

body, p {
    font-family: Verdana, Helvetica, Arial, sans-serif;
}

header, h1, h2, h3 {
    font-family: serif;
}

h1 {
    color: var(--color-fg-hard);
}

.clearfix {
    content: "",
    clear: both;
    display: table;
}

noscript {
    display: block;
    padding: 10px;
    color: red;
    font-size: 200%;
    text-align: center;
    border: 2px solid red;
    border-radius: 10px;
}

header, footer {
    margin: 0 auto;
    text-align: center;
}

header {
    margin-bottom: 10px;
    padding: 15px 0;
    font-size: 2.5em;
    color: var(--color-fg-hard);
    border-bottom: 2px solid var(--color-fg-hard);
}

footer {
    margin-top: 40px;
    padding: 5px 0;
    border-top: 2px solid var(--color-fg-hard);
}

button {
    transition-duration: 0.3s;
    cursor: pointer;
}

#shadedbackground {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: black;
    opacity: 0.85;
}

/*---------------------*/
/* Main navigation bar */
/*---------------------*/

nav.main {
    margin: 10px 0 40px 0;
    padding: 0;
    text-align: center;
}

nav.main div {
    margin: 0;
    padding: 0;
}

nav.main > div {
    display: inline-block;
    margin: 0 20px;
}

nav.main a {
    width: 125px;
    margin: 0;
    padding: 10px 5px;
    text-align: center;
    text-decoration: none;
    background-color: white;
    transition-duration: 0.3s;
}

nav.main a:link {
    color: black;
}

nav.main a:visited {
    color: black;
}

nav.main a:hover {
    color: black;
    background-color: var(--color-bg-medium);
}

nav.main a:active {
    color: black;
}

nav.main > div > a {
    display: inline-block;
    border-radius: 10px;
    border: 1px solid var(--color-fg-hard);
}

nav.main a.active {
    background-color: var(--color-bg-soft);
    color: var(--color-fg-hard);
}

nav.main a.active:hover {
    background-color: var(--color-bg-medium);
}

nav > div.dropdown > div {
    position: absolute;
    display: none;
}

nav > div.dropdown:hover > div {
    display: block;
    border: 1px solid black;
    box-shadow: 0 5px 10px 0 lightgray;
}

nav > div.dropdown > div a {
    display: block;
}

/*--------*/
/* Images */
/*--------*/

.screenshot {
    margin: 20px 0;
    border: 1px solid black;
}

/*--------*/
/* Tables */
/*--------*/

table {
    width: 100%;
    border-collapse: collapse;
}

table, th, td {
    border: 1px solid;
}

th, td {
    padding: 5px;
    text-align: left;
}