:root{
    --hlavna_farba: #ccc42f;
    --pozadie_svetle: #f0f0f0;
    --text_svetly: #333;
    --pozadie_tmave: #222;
    --text_tmavy: #eee;
    --nav-pozadie: #3b3a3a;
    --nav-border: #4CAF50;
    --nav-odkaz-farba: white;
    --nav-odkaz-hover-pozadie: #4CAF50;
    --nav-odkaz-hover-farba: white;
    --tlacidlo-pozadie: #4CAF50;
    --tlacidlo-text: white;
    --paticka-pozadie: #333;
    --paticka-text: white;
    --visited: #8add81;
    --hover: #45a049;
    --border-td: #333; 
}



body {
    font-family: Verdana, sans-serif;
    background-color: var(--pozadie_svetle);
    color: var(--text-svetly);
    margin: 0;
    padding: 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body > *:not(nav):not(footer) {
    flex-grow: 1;
}
h1 {
    color: var(--hlavna_farba);
    font-size: 2.5em;
    margin-top: 20px;
    text-transform: uppercase;
}

nav {
    background-color:var(--nav-pozadie);
    border: 2px solid var(--nav-border);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 15px 30 px;
    margin: 20px auto;
    font-size: 1.2em;
    width: 80%;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 20px;
}

nav li {
    display: inline;
}

nav a {
    text-decoration: none;
    color: var(--pozadie_svetle);
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

nav a:hover {
    background-color:var(--nav-odkaz-hover-pozadie);
    color: var(--pozadie_svetle);
    transform: translateY(-2px);
}

nav a:visited {
    color: var(--visited);
}

main {
    flex: 1;
    padding: 20px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

table {
    margin: 20px auto;
    border-collapse: collapse;
    width: 90%;
}

th, td {
    border: 1px solid var(--border-td);
    padding: 10px;
    text-align: center;
}



button {
    background-color: var(--tlacidlo-pozadie);
    color: var(--pozadie_svetle);
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
    transform: scale(1.05);
}



footer {
    background-color: var(--paticka-pozadie);
    color: var(--text_tmavy);
    padding: 10px;
    width: 100%;
    text-align: center;
    font-size: 0.9em;
}

.dark-mode {
    background-color: var(--pozadie_tmave);
    color:var(--text_tmavy);
}

#dark{
    background-color: var(--tlacidlo-pozadie);
    color: var(--text_tmavy);
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 25px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    max-width: fit-content;
    position: fixed;
    bottom: 20px;
    right: 20px;
}

#dark:hover{
    background-color: var(--hover);
    transform: scale(1.1);
}

#hero {
    text-align: center;
    padding: 100px 20px;
    background: linear-gradient(to right, #141e30, #45a049);
    color: white;
}

.hlavny-obrazok {
    width: 60%;
    max-width: 600px;
    border-radius: 15px;
    margin-top: 20px;

}

#vysledok {
    margin-top: 20px;
    font-size: 1.4em;
    font-weight: bold;
    color: var(--text_svetly);
    background-color: var(--pozadie_svetle);
    padding: 15px;
    border: 2px solid var(--nav-border);
    border-radius: 10px;
    display: inline-block;
}

nav ul.menu li {
    position: relative;
}

nav ul.menu li ul.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--pozadie_svetle);
    padding: 0;
    list-style: none;
    min-width: 150px;
    z-index: 1;
}

nav ul.menu li:hover > ul.submenu {
    display: block;
}

nav ul.menu li ul.submenu li a {
    color: var(--text_svetly);
    padding: 10px 15px;
    text-decoration: none;
    display: block;
}

nav ul.menu li ul.submenu li a:hover {
    background-color: var(--pozadie_svetle);
}

/*uvod*/

.uvodna_sekcia{
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 30px;
}

#uvodne{
    flex: 2;
    font-size: 1.1em;
    color: var(--text-svetly);
    line-height: 1.8;
    padding: 5px;
    margin-bottom: 0;
    white-space: pre-line;
}

body.dark-mode #uvodne{
    color: var(--text-tmavy);
}

.uvodna_sekcia img{
    flex: 1;
    max-width: 300px;
    height: auto;
    opacity: 0.6;
}

/*historia*/

#historia {
    font-size: 1.1em;
    color: var(--text-svetly);
    line-height: 1.8;
    margin-bottom: 0;
    white-space: pre-line;
    word-wrap: break-word;
}

body.dark-mode #historia{
    color: var(--text-tmavy);
}

.historia_sekcia {
    max-width: 950px;
    margin: 20px auto;
    padding: 20px 0;
    position: relative;
}

.historia_sekcia::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 30px;
    width: 5px;
    background-color: var(--text-tmavy);
    z-index: -1;
}

body.dark-mode .historia_sekcia::before {
    background-color: var(--text-svetly);

}

.historia_sekcia img {
    max-width: 300px;
    height: auto;
    opacity: 0.6;
}

.odsek-s-obrazkom {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding: 15px;
    border-radius: 5px;
    position: relative;
    padding-left: 60px;
}

.odsek-s-obrazkom > p {
    flex: 2;
    margin-bottom: 0;
    padding-right: 20px;
    word-wrap: break-word;
    color: var(--text-svetly);
}

body.dark-mode .odsek-s-obrazkom > p {
    color: var(--text-tmavy);
    }

.odsek-s-obrazkom > img {
    flex: 1;
    max-width: 200px;
    height: auto;
    border-radius: 5px;
    opacity: 0.8;
}

/*fungovanie*/

.fungovanie_sekcia{
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
}

#fungovanie{
    flex: 2;
    font-size: 1.1em;
    color: var(--text-svetly);
    line-height: 1.8;
    padding: 5px;
    margin-bottom: 0;
    white-space: pre-line;
}

body.dark-mode #fungovanie{
    color: var(--text-tmavy);
}

.fungovanie_sekcia img{
    max-width: 300px;
    height: auto;
    opacity: 0.6;
}

/*proces*/

.proces_sekcia{
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    margin-top: 0px;
}

#proces{
    flex: 2;
    font-size: 1.1em;
    color: var(--text-svetly);
    line-height: 1.8;
    padding: 5px;
    margin-bottom: 0;
    white-space: pre-line;
    margin-top: 0;
}

body.dark-mode #proces{
    color: var(--text-tmavy);
}

.proces_sekcia > img {
    max-width: 500px;
    height: auto;
    opacity: 0.6;
    border-radius: 5px;
}

/*sla*/

.sla_sekcia{
    
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    margin-top: 0px;
    white-space: pre-wrap;
}

#sla{
    
    flex: 2;
    font-size: 1.1em;
    color: var(--text-svetly);
    line-height: 1.8;
    padding: 5px;
    margin-bottom: 0;
    margin-top: 0;

}

body.dark-mode #sla{
    color: var(--text-tmavy);
}

.sla_sekcia > img {
    max-width: 500px;
    height: auto;
    opacity: 0.6;
    border-radius: 5px;
}

ul {
    text-align: left;
    padding-left: 20px;
    margin-left: 0;
    list-style-position: inside;
}

li {
    text-align: left;
    margin-left: 20px;
    margin-bottom: 5px;
    text-indent: -20px;
}

/*tlacidla tlaciarne*/

.print-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 20px auto;
    padding: 10px;
    border-radius: 5px;
}

.print-buttons button {
    background: var(--pozadie_svetle);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: transform 0.2s ease-in-out;
}

.print-buttons button:hover {
    transform: scale(1.1);
}

.print-buttons button img {
    display: block;
    max-width: 150px;
    height: auto;
    border-radius: 5px;
    transition: opacity 0.2s ease-in-out;
    }

/* + a - */

.vyhody-nevyhody-sekcia {
    max-width: 800px;
    margin: 20px auto;
    padding: 15px;
    color: var(--text_svetly);
    background-color:var(--pozadie_svetle);
}

body.dark-mode .vyhody-nevyhody-sekcia {
    color:var(--text_tmavy);
    background-color: var(--pozadie_tmave);
}

.vyhody-nevyhody-sekcia h1 {
    color: var(--text_svetly);
    text-align: center;
    margin-bottom: 15px;
}

body.dark-mode .vyhody-nevyhody-sekcia h1 {
    color: var(--text_tmavy);
}

.vyhody-nevyhody-sekcia h2 {
    color: #555;
    margin-top: 20px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-td);
    padding-bottom: 3px;
}

body.dark-mode .vyhody-nevyhody-sekcia h2 {
    color: var(--text_svetly);
    border-bottom-color: var(--border-td);
}

.vyhody-nevyhody-sekcia ul {
    list-style-type: disc;
    padding-left: 20px;
}

.vyhody-nevyhody-sekcia li {
    margin-bottom: 8px;
}

.vyhody-nevyhody-sekcia p {
    line-height: 1.6;
    margin-bottom: 12px;
}

body.dark-mode .vyhody-nevyhody-sekcia p {
    color: var(--text_tmavy);
}

.button-dole{
    text-align: center;
    margin: 20px;
    font-size: 2em;
    color: var(--tlacidlo-pozadie);
}

/*body.dark-mode .button-dole{
    color: var();
}
*/
/*filamenty*/


.sla_sekcia{
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    margin-top: 0px;
}

#filamenty{
    flex: 2;
    font-size: 1.1em;
    color: var(--text-svetly);
    line-height: 1.8;
    padding: 5px;
    margin-bottom: 0;
    white-space: pre-line;
}

.filamenty_sekcia {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background-color:var(--pozadie_svetle);
    color: var(--text-svetly);
    margin-bottom: 20px;
}

body.dark-mode .filamenty_sekcia {
    background-color: var(--pozadie_tmave);
    color: var(--text-tmavy);
}

.filamenty_sekcia h3 {
    color: var(--hlavna_farba);
    text-align: left;
    margin-top: 0;
    margin-bottom: 10px;
    padding-bottom: 5px;
}

.filamenty_sekcia p {
    flex: 2;
    margin-bottom: 0;
    padding-right: 20px;
    word-wrap: break-word;
    color: var(--text-svetly);
    white-space: pre-line;
    }

.filamenty_sekcia ul {
    padding-left: 20px;
    margin-left: 0;
    list-style-position: inside;
}

.filamenty_sekcia li {
    margin-left: 20px;
    margin-bottom: 5px;
    text-indent: -20px;
}

body.dark-mode #filamenty {
    color: var(--text-tmavy);
}

/* vybavenie*/

.vybavenie-sekcia {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background-color: var(--pozadie_svetle);
    border-radius: 8px;
    color: var(--text-svetly);
}

body.dark-mode .vybavenie-sekcia {
    background-color: var(--pozadie_tmave);
    color: var(--text-tmavy);
}

.vybavenie-sekcia h2 {
    color:var(--text_svetly);
    text-align: left;
    margin-bottom: 15px;
    padding-bottom: 5px;
    margin-top: 25px;
}

.vybavenie-polozka {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;

}
.vybavenie-polozka > img {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    max-width: 100px;

}

ul.vyber {
    display: inline-block; /* Aby sa ul správal ako inline element a mohol byť zarovnaný na stred pomocou text-align */
    list-style-type: none;
    padding-left: 0;
    margin: 0; /* Odstráni predvolené okraje zoznamu */
  }