* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: #f5faff; /* Svijetla plava boja za pozadinu */
    line-height: 1.4;
    font-family: Arial, sans-serif;
    font-size: 18px;
}

/*-----------------------Header, Naslov i Izbornik--------------------------------------*/
.header {
    display: flex;
    flex-direction: column; /* Elementi jedan ispod drugog */
    align-items: center; /* Centriranje elemenata */
    padding: 20px;
    background: #4b91e0; /* Gradijentna pozadina */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); /* Sjena za efekt lebdenja */
   
}

.header h1 {
    color: #ffffff; /* Tamno siva boja */
    font-size: 36px;
    margin-bottom: 20px; /* Razmak između naslova i navigacije */
    text-align: center;
}

.header nav {
    display: flex;
    gap: 40px; /* Veći razmak između pravokutnika */
    justify-content: center;
    flex-wrap: wrap; /* Prelamanje u novi red ako nema dovoljno prostora */
}

.header a {
    text-decoration: none;
    color: black; /* Bijeli tekst */
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    width: 120px; /* Širina pravokutnika */
    height: 50px; /* Visina pravokutnika */
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #a1c4fd, #c2e9fb);; /* Plava pozadina pravokutnika */
    border-radius: 8px; /* Lagano zaobljeni rubovi */
    transition: transform 0.3s ease, background 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* Sjena za pravokutnik */
}

.header a:hover {
    background: #357acb; /* Tamnija plava kod hovera */
    transform: scale(1.05); /* Lagano povećanje pravokutnika */
    
}


/*-----------------------Kraj Headera-----------------------------------------*/

/*-----------------------Glavni dio-----------------------------------------*/
.container {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
    font-family: Verdana, Tahoma, sans-serif;
}

.prva {
    display: flex;
    justify-content: space-around;
}

.glavno {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

article {
    background-color: #ffffff; /* Bijela pozadina za kontrast */
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); /* Mekana sjena */
    padding: 20px;
    flex-basis: 30%;
    margin-top: 15px;
    min-width: 280px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

article:hover {
    transform: translateY(-5px); /* Efekt lebdenja */
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2); /* Povećanje sjene kod hovera */
}
/*-----------------------Kraj Glavnog Dijal-----------------------------------------*/

/*-----------------------Footer-----------------------------------------*/
footer {
    background-color:#4b91e0; /* Svijetla plava boja */
    color: #ffffff; /* Bijeli tekst */
    text-align: center;
    padding: 20px;
    margin-top: 50px;
    font-size: 18px;
    box-shadow: 0 -2px 6px rgba(0, 0, 0, 0.1);
}

footer a {
    color: #ffffff;
    text-decoration: underline;
}

footer a:hover {
    text-decoration: none;
    color: #f0f8ff; /* Svijetlija nijansa plave kod hovera */
}
/*-----------------------Kraj Footera-----------------------------------------*/

/*-----------------------Rezultati-----------------------------------------*/
.rez {
    background-color: #ffffff; /* Bijela pozadina */
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1); /* Sjena za efekt lebdenja */
    padding: 20px;
    width: 450px;
    height: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
    transition: transform 0.3s ease-in-out;
    margin: 5px;
    
}

.rez h1{
    text-align: center;
}



.rez:hover {
    transform: scale(1.05); /* Lagani zoom kod hovera */
}

.centar {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 100px;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #a1c4fd;
    border-radius: 4px;
    font-size: 16px;
}

input[type="submit"] {
    width: 60%;
    padding: 10px;
    font-size: 16px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(90deg, #89f7fe, #66a6ff); /* Gradijentna pozadina */
    color: white;
    cursor: pointer;
    transition: background 0.3s ease-in-out;
    margin-left: 78px;
    
}

input[type="submit"]:hover {
    background: linear-gradient(90deg, #66a6ff, #89f7fe); /* Obrnuti gradijent kod hovera */
}
/*-----------------------Kraj Rezultata-----------------------------------------*/