s/*Barvy režimů*/
:root {
    --background-color: rgb(230, 230, 230);
    --text-color: black;
    --header-footer-bg-color: rgb(163, 163, 163);
    --button-border-color: rgb(88, 88, 88);
    --button-border-style: solid;
    --button-bg-color: var(--background-color);
    --button-bg-color-hover: rgb(88, 88, 88);
    --icon-filter: none;
    --icon-outline-width: 2px;
    --icon-invert: 1; /* default: invert icon to be opposite of theme */
    --icon-outline-color: rgba(0,0,0,0.65);
    --switch-color: rgba(255,255,255,0.95);
    --discord-invert: 0; /* 0 in light: no invert, black logo */
}

body.dark-mode {
    --background-color: rgb(40, 40, 40);
    --text-color: white;
    --header-footer-bg-color: rgb(20, 20, 20);
    --button-border-color: white;
    --button-border-style: double;
    --button-bg-color: var(--background-color);
    --button-bg-color-hover: white;
    --icon-filter: brightness(0) invert(1);
    --icon-invert: 0; /* in dark mode, don't invert (so icon becomes opposite of theme) */
    --icon-outline-color: rgba(255,255,255,0.9);
    --switch-color: rgba(0,0,0,0.7);
    --discord-invert: 1; /* 1 in dark: invert, white logo */
}

/* Smooth color transitions for theme properties */
body, header, footer, .box, .box p, a {
    transition: background-color 420ms ease, color 420ms ease, border-color 420ms ease;
}

/* Prevent mode button from inheriting transitions or animations */
#mode, #mode img {
    transition: none !important;
}

/* Mode switch radial reveal animation */
body::before {
    content: '';
    position: fixed;
    left: var(--switch-x, 50%);
    top: var(--switch-y, 50%);
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: transform 560ms cubic-bezier(.2,.9,.2,1), opacity 420ms ease;
    background: radial-gradient(circle at center, var(--switch-color) 0%, rgba(0,0,0,0) 40%);
    border-radius: 50%;
}

body.theme-switching::before {
    width: 200vmax;
    height: 200vmax;
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}


/*!All Around!*/
body {
    background-color: var(--background-color);
    margin: 0;
    cursor: default;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    display: flex;
    background-color: var(--header-footer-bg-color);
    padding: 8px;
}

a{
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);}

#logo {
    display: inline;
    margin-right: 10px;
    vertical-align: middle;
}

img#logo {
    width: 40%;
    height: auto;
    max-height: 90%;
    margin-right: 0px;
}

#mode {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

#header-buttons {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    margin-top: auto;
    margin-bottom: auto;
}

#discord {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-decoration: none;
}

#discord img {
    width: 60px;
    filter: invert(var(--discord-invert));
    transition: filter 0.18s ease;
}

header img {
    width: 75px;
}

main {
    flex-grow: 1
}

footer{
    background-color: var(--header-footer-bg-color);
    display: flex;
    padding: 8px;
}

.boxes {
    padding: 20px;
}

.box-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 50px;
    margin-bottom: 20px;
}

.box {
    width: 200px;
    min-height: 200px;
    border: 1px solid var(--button-border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--button-bg-color);
    transition: background-color 0.3s;
    position: relative;
    overflow: visible;
    transition: background-color 0.25s, transform 0.18s ease, box-shadow 0.18s ease;
}

.box:hover {
    background-color: var(--button-bg-color-hover);
}

.box > img:not(.icon) {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
    display: block;
}

.box p {
    margin: 10px 0 0 0;
    text-align: center;
    color: var(--text-color);
    position: relative;
    z-index: 2;
    overflow-wrap: break-word;
    word-break: break-word;
    flex-basis: 180px;
    flex-shrink: 0;
    white-space: normal;
}

h1, h2, h3, p {
    text-align: center;
    font-size: 1.5em;
    display: block;
    color: var(--text-color);
}

footer p {
    margin: 0 auto;
    text-align: center;
    color: var(--text-color);
    font-size: 0.9em;
}

#version {
    display: inline-flex;
    width: fit-content;
}

main #version {
    display: none;
}

main #version.version-modal {
    display: block;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--background-color);
    color: var(--text-color);
    padding: 20px;
    border-radius: 8px;
    max-width: 80%;
    max-height: 80%;
    overflow-y: auto;
    z-index: 10000;
    border: 1px solid var(--button-border-color);
}

main #version.version-modal button {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
    transition: color 0.3s;
}

main #version.version-modal button:hover {
    color: var(--button-border-color);
}

main #version.version-modal table {
    width: 100%;
    border-collapse: collapse;
    color: var(--text-color);
}

main #version.version-modal th,
main #version.version-modal td {
    padding: 8px;
    border: 1px solid var(--button-border-color);
    color: var(--text-color);
}

main #version.version-modal th:first-child {
    width: auto;
    white-space: nowrap;
}

main #version.version-modal td:nth-child(2) {
    width: 100%;
}

main #version.version-modal td:last-child {
    width: auto;
    white-space: nowrap;
}
/*!Předměty!*/

/* Small type icon placed at the top-right of each .box */
.box .icon {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    object-fit: contain;
    z-index: 10000;
    border-radius: 6px;
    padding: 2px;
    background: rgba(255,255,255,0.03);
    /* Make the icon itself be the opposite of the theme using invert() */
    filter: invert(var(--icon-invert)) drop-shadow(0 0 2px var(--icon-outline-color)) drop-shadow(0 0 6px var(--icon-outline-color));
    transition: filter 0.18s ease, box-shadow 0.18s ease, transform 0.12s ease;
}

/* Hover pop-up that doesn't reflow grid */
.box:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.18);
    z-index: 5;
}

/*! Version Modal Styles */
#version:hover {
    cursor: pointer;
}

#version-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

#version-modal > div {
    background-color: var(--background-color);
    color: var(--text-color);
    padding: 20px;
    border-radius: 8px;
    max-width: 80%;
    max-height: 80%;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--button-border-color);
}

#version-modal button {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
    transition: color 0.3s;
}

#version-modal button:hover {
    color: var(--button-border-color);
}

#version-modal table, th, td {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--button-border-color);
}

#version-modal th {
    font-weight: bold;
    text-align: center;
}

.box-container a {
    width: 200px;
}