body {
    background-color: #1b0033;
    color: #fff;
    margin: 0;
    padding: 0;
    font-family: Verdana, Geneva, sans-serif;
}

.skladiste {
    width: 85%;
    margin: auto;
    position: relative;
}

.skladiste::after {
    content: "";
    display: table;
    clear: both;
}

#glavni_header {
    color: #ffffff;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 2%;
}

#glavni_header h1 {
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin: 0;
    text-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

#navbar {
    position: absolute;
    top: 40px;
    right: 5%;
    z-index: 1000;
}

#navbar ul {
    padding: 0;
    margin: 0;
    list-style: none;
    display: flex;
}

#navbar a {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    margin-left: 20px;
    text-transform: uppercase;
    transition: 0.3s;
}

#navbar a:hover {
    color: #00d9ff;
    text-shadow: 0 0 15px #00d9ff;
}
#glavna_prezentacija {
    float: left;
    width: 65%;
    padding-right: 30px;
    box-sizing: border-box;
    margin-bottom: 60px;
}

#glavna_prezentacija h2 {
    color: #00d9ff;
    text-transform: uppercase;
    border-left: 4px solid #00d9ff;
    padding-left: 15px;
    margin-top: 40px;
    text-shadow: 0 0 8px rgba(0, 217, 255, 0.3);
}

#prezentacija img {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
}

#sidebar {
    float: right;
    width: 30%;
    padding: 15px;
    box-sizing: border-box;
    background: #0b0c2a;
    color: #00d9ff;
    border: 2px solid #00d9ff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
    margin-bottom: 60px;
    flex: 1;
    position: sticky;
    top: 20px;
}

#glavna_prezentacija ul {
    list-style: none;
    padding-left: 0;
}

#glavna_prezentacija ul li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
}

#glavna_prezentacija ul li::before {
    content: "■"; 
    color: #00d9ff;
    text-shadow: 0 0 8px #00d9ff;
    position: absolute;
    left: 0;
    font-size: 10px;
    top: 2px;
}
.slika-u-tekstu1 {
    width: calc(33.33% - 10px);
    height: auto;
    object-fit: contain;
    border-radius: 6px;
    border: 1px solid #33145a;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s ease;
}

.slika-u-tekstu1:hover {
    transform: scale(1.03);
    border-color: #00d9ff;
}
.dugme {
    position: relative;
    display: inline-block;
    padding: 15px 40px;
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 14px;
    font-weight: bold;
    transition: 0.5s;
    z-index: 1;
}

.dugme::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0b0c2a;
    border-radius: 10px;
    z-index: -1;
}

.dugme::before {
    content: "";
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    z-index: -2;
    background: linear-gradient(45deg, #00d9ff, #002BFF, #ff00c8, #00d9ff);
    background-size: 400%;
    border-radius: 12px;
    filter: blur(10px);
    opacity: 0.8;
    animation: glowing 20s linear infinite;
}
.centriraj-dugme {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin: 40px 0;
    clear: both;
}

@keyframes glowing {
    0% { background-position: 0 0; }
    50% { background-position: 400% 0; }
    100% { background-position: 0 0; }
}

#glavni_footer {
    clear: both;
    background-color: #0b0c2a;
    color: #bdc3c7;
    text-align: center;
    padding: 40px;
    margin-top: 100px;
    border-top: 2px solid #00d9ff;
}

@media(max-width: 800px) {
    #glavna_prezentacija, #sidebar {
        width: 100%;
        float: none;
        padding-right: 0;
    }
    #navbar {
        position: static;
        margin-top: 20px;
        width: 100%;
    }
    #navbar ul {
        justify-content: center;
        flex-wrap: wrap;
    }
    #glavni_header {
        text-align: center;
        padding-left: 0;
    }
    .popularno-kontejner {
        flex-direction: column;
    }
}