@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;700&family=Open+Sans:wght@300;400&display=swap');
:root{
    --tamnoPlava: #1d527c;
    --svetloPlava: #459ad3;
    --orange: #fd7f45;
    --tamnoSiva: #3c3b3c;
    --svetloSiva: lightgray;
    --bela: #fff;
    --bordo: #A81919;
    --crna: #000000;
    --plava: #3F596B;
    --bojaHovera: #4B80A4;
    --transition: .3s ease;
    --padding: 100px 0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    color: var(--tamnoSiva);
    line-height: 1.6;
}
h1, h2, h3, h4, h5, h6{
    font-family: 'Montserrat', sans-serif;
}
ul{
    list-style: none;
}
a{
    text-decoration: none;
}

a:hover{
    transition: var(--transition);
}

button{
    padding: 15px 40px;
    border: 1px solid var(--bela);
    background: transparent;
    color: var(--bela);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

button:hover{
    cursor: pointer;
    background: var(--bela);
    color: var(--tamnoSiva);
    transition: var(--transition);
}

.container{
    width: 80%;
    margin: auto;
}

.headings{
    font-size: 3rem;
    font-weight: 700;
    color: var(--tamnoPlava);
}

.headings::after{
    display: block;
    content: "";
    height: 1px;
    width: 100px;
    background: var(--tamnoPlava);
    margin: 10px 0 20px 0;
}

/*********************
nav
**********************/
nav{
    background: linear-gradient(to right, var(--plava), var(--crna));
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 5px 0;
}

nav ul{
    display: flex;
}

nav a{
    color: var(--bela);
    text-transform: uppercase;
    padding: 0 30px;
}

nav a:hover{
    color: var(--bojaHovera);
}

.logo img {
    width: 150px; 
    height: auto;
}

.glavna_strana{
    background-image: 
        linear-gradient(rgba(0,0,0,0.8), rgba(63,89,107,0.9)), 
        url("slike/pozadina.png");
}


/*********************
header
**********************/
header {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 93vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--bela);
}



header h1{
    font-size: 3rem;
    font-weight: 300;
    line-height: 1.2;
}

header h1 strong{
    font-style: italic;
}

header p{
    font-size: 1.2rem;
    padding: 30px;
}

/*********************
about
**********************/

.about{
    padding: var(--padding);
    display: flex;
}
.about img{
    width: 100%;
    box-shadow: 10px 10px 30px #989595;
}

.about h2{
    font-size: 40px;
}

.about article{
    flex: 1;
}

.about article:first-child{
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about p{
    padding-right: 50px;
    text-align: justify;
}

/****************
services
****************/

.services{
    padding: var(--padding);
    background-image: linear-gradient(rgba(29, 82, 124, .8), rgba(29, 82, 124, .8)), 
    url(slike/usluge.jpg);
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    color: var(--bela);
}

.services h2{
    color: var(--bela);
}

.services h2::after{
    background: var(--bela);
}

.services .container{
    display: flex;
}

.services article{
    flex: 1;
}

.services article:first-child{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.services article:first-child i{
    font-size: 5rem;
    color: var(--svetloSiva);
    flex: 0 0 50%;
}

.services p{
    padding: 30px 0;
}

/*******************
blog
*******************/

.blog{
    padding: var(--padding);
    text-align: center;
}

.blog img{
    width: 100%;
    height: 200px;
}

.blog .row{
    display: flex;
    justify-content: space-between;
}

.blog article{
    flex: 0 0 31%;
}

.blog .headings::after{
    margin: 10px auto 30px auto;
    background: var(--tamnoPlava);
}

.blog .dugme {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--tamnoPlava);
    color: white;
    cursor: pointer;
    font-size: 16px;
}

.blog .dugme:hover {
    background-color: var(--svetloPlava);
    color: #000000;
}


.blog p{
    margin-bottom: 30px;
}

.blog h3{
    font-size: 1.7rem;
    padding: 20px 0;
}
/*****************
latex
*****************/

.latex-rad {
    max-width: 1000px;
    margin: 80px auto;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.latex-rad h2 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 28px;
    color: var(--tamnoPlava);
}

.latex-rad p {
    text-align: center;
    margin-bottom: 25px;
    font-size: 16px;
    color: #555;
}

.pdf-link {
    display: inline-block;
    margin: 0 auto 30px auto;
    padding: 12px 25px;
    text-decoration: none;
    background-color: var(--tamnoPlava);
    color: #fff;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.pdf-link:hover {
    background-color: var(--bojaHovera);
}

.pdf-frame {
    width: 100%;
    height: 700px;
    border: 1px solid #ccc;
    border-radius: 8px;
}


/**************
druga strana
**************/
#raniRazvoj{
    background-image:linear-gradient(rgba(0, 0, 0, .7), rgba(0, 0, 0, .7)), 
    url("slike/pozadina.png");
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

.sekcija {
    display: flex;
    align-items: center;
    margin: 40px 0;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background-color: #f9f9f9;
    gap: 20px;
}

.sekcija:nth-child(even) {
    flex-direction: row-reverse;
}

.tekst {
    flex: 1;
}

.tekst h2 {
    color: #1a237e;
    margin-bottom: 10px;
}

.tekst p {
    line-height: 1.6;
}

.slika {
    flex: 1;
}

.slika img {
    width: 80%;
    max-width: 400px;
    border-radius: 10px;
    object-fit: cover;
}

/***************
treca strana
****************/
.treca_strana{
    background-image:linear-gradient(rgba(0, 0, 0, .7), rgba(0, 0, 0, .7)), 
    url("slike/pozadina.png");
}

.generacije-tabela {
    width: 65%;
    border-collapse: collapse;
    margin: 60px auto 30px auto;
    background-color: #ffffff;
    font-family: Arial, sans-serif;
    color: var(--tamnoPlava);
}

.generacije-tabela th,
.generacije-tabela td {
    border: 1px solid #ddd;
    padding: 12px 15px;
    text-align: center;
}

.generacije-tabela thead {
    background-color: var(--tamnoSiva);
    color: #ffffff;
}

.generacije-tabela tbody tr:nth-child(even) {
    background-color: #f5f5f5;
}

.generacije-tabela tbody tr:hover {
    background-color: #e8eaf6;
}



.generacije-naslov{
    color: var(--bela);
    text-align: center;
    margin-top: 30px;
    margin-bottom: 20px;
}

.generacije-opis {
    width: 90%;
    max-width: 1000px;
    margin: 10px auto;
    margin-bottom: 40px;
    padding: 10px;
    display: grid;              
    grid-template-columns: 1fr 1fr;  
    grid-auto-rows: minmax(180px, auto);
    gap: 50px;                  
    background-color: transparent; 
}

.generacija {
    background-color: rgba(255, 255, 255, 0.95); 
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.generacija:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.generacija h3 {
    margin-bottom: 12px;
    color: #1a237e;
    font-size: 1.2rem;
}

.generacija p {
    line-height: 1.5;
    color: #333;
    font-size: 0.95rem;
}




/***************
cetvrta strana
****************/ 

.cetvrta_strana{
    background-image:linear-gradient(rgba(0, 0, 0, .7), rgba(0, 0, 0, .7)), 
    url("slike/pozadina.png");
}


.savremeno-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    width: 90%;
    max-width: 1200px;
    margin: 60px auto;
}

.savremeno-sekcija {
    position: relative;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 20px;
    padding: 30px 25px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    overflow: hidden;
    transition: all 0.4s ease;
}


.savremeno-sekcija:hover {
    transform: translateY(-10px) rotateZ(-0.5deg);
    box-shadow: 0 12px 30px rgba(0,0,0,0.35);
}

.savremeno-sekcija h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    padding-left: 50px;
    position: relative;
}

.savremeno-sekcija h2::before {
    content: "\f108"; 
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 0;
    font-size: 1.8rem;
    color: #3949ab;
}


.savremeno-sekcija:nth-child(1) { border-left: 6px solid #1a237e; }
.savremeno-sekcija:nth-child(2) { border-left: 6px solid #283593; }
.savremeno-sekcija:nth-child(3) { border-left: 6px solid #3949ab; }
.savremeno-sekcija:nth-child(4) { border-left: 6px solid #5c6bc0; }

.savremeno-sekcija ul {
    list-style: square;
    padding-left: 25px;
}

.savremeno-sekcija ul li {
    margin-bottom: 8px;
    color: #1a237e;
}


/***************
peta strana
***************/

.kontakt_strana{
    background-image:linear-gradient(rgba(0, 0, 0, .8), rgba(0, 0, 0, .7)), 
    url("slike/pozadina.png");
}

.kontakt_naslov{
    color: var(--bela);
    text-align: center;
    margin: 40px auto;
}

.kontakt_forma {
    width: 90%;
    max-width: 600px;
    margin: 20px auto 80px auto;
    padding: 40px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    border-radius: 25px;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: fadeIn 0.8s ease;
}

.kontakt_forma h2 {
    text-align: center;
    color: #fff;
    font-size: 2rem;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.kontakt_forma input,
.kontakt_forma textarea {
    width: 100%;
    padding: 14px 18px;
    border-radius: 30px;
    border: none;
    outline: none;
    font-size: 1rem;
    background: rgba(255,255,255,0.85);
    transition: all 0.3s ease;
}

.kontakt_forma textarea {
    border-radius: 18px;
    min-height: 140px;
    resize: none;
}

.kontakt_forma input:focus,
.kontakt_forma textarea:focus {
    background: #fff;
    box-shadow: 0 0 0 3px rgba(69,154,211,0.4);
}

.kontakt_forma button {
    margin-top: 10px;
    padding: 15px;
    border-radius: 30px;
    border: none;
    background: linear-gradient(to right, #459ad3, #1d527c);
    color: #fff;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.kontakt_forma button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    background: linear-gradient(to right, #1d527c, #459ad3);
}


/*****************
footer
*****************/
:root {
    --accent: #4f8cff;   
}

.site-footer {
    background-color: #0d0f14;
    color: #e6e6e6;
    margin-top: 120px;
    position: relative;
}

.site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(
        to right,
        transparent,
        var(--accent),
        transparent
    );
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 70px 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 50px;
}

.footer-about h3,
.footer-links h4,
.footer-info h4 {
    color: #fff;
    margin-bottom: 18px;
    font-weight: 600;
    letter-spacing: 0.4px;
}

.footer-about h3 {
    font-size: 24px;
}


.footer-about p,
.footer-info p {
    color: #c9c9c9;
    line-height: 1.7;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    text-decoration: none;
    color: #c9c9c9;
    padding-left: 18px;
    position: relative;
    transition: color 0.25s ease;
}

.footer-links a::before {
    content: "●";
    position: absolute;
    left: 0;
    font-size: 8px;
    color: var(--accent);
    top: 6px;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    background-color: #090b10;
    padding: 22px;
    text-align: center;
    border-top: 1px solid rgba(79, 140, 255, 0.3);
}

.footer-bottom p {
    margin: 0;
    font-size: 13px;
    color: #9a9a9a;
}



/***************
responsive
***************/

@media(max-width:768px){
    nav{
        flex-direction: column;
    }
    nav a{
        padding: 0 10px;
        letter-spacing: 0;
    }
    header h1{
        font-size: 2.5rem;
    }
    .about article{
        flex: 0 0 100%;
        margin-bottom: 30px;
    }
    .about p{
        padding-right: 0px;
    }
    .services article{
        flex: 0 0 100%;
    }
    .services article:first-child{
        order: 1;
    }
    .services{
        height: 180vh;
        background-attachment: cover;
    }
    .blog article{
        flex: 0 0 100%;
        margin-bottom: 30px;
    }
}