body {
    font-family: Arial, sans-serif;
    background-image: url("../shape-5060385_1280.jpg");
    background-size: cover; 
    background-position: center; 
    background-attachment: fixed; 
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; 
    text-align: center;
    align-items: center;
    min-height: 100vh; 
    overflow-x: hidden; 
}

header {
    background-color: rgb(14, 24, 34);
    color: white;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    width: 100%; 
    padding: 20px;
    box-sizing: border-box; 
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
}

form {
    max-width: 400px;
    margin: 50px auto;
    padding: 25px;
    border-radius: 15px;
    background-color:rgb(213, 226, 236) ;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    font-family: Arial, sans-serif;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

form:hover {
    transform: scale(1.03);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

label {
    font-size: 20px;
    font-weight: bold;
    color: #333;
}

input[type="number"],
button {
    width: 80%; 
    padding: 12px;
    margin-top: 10px;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

input[type="number"] {
    border: 2px solid #ddd;
}

input[type="number"]:hover,
input[type="number"]:focus {
    border-color: rgb(74, 143, 186);
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.5);
    outline: none;
}

button {
    background: rgb(74, 143, 186);
    color: white;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background: rgb(109, 181, 225);
    box-shadow: 0 0 15px rgba(49, 136, 190, 0.6);
}

footer {
    padding: 20px;
    background-color: rgb(14, 24, 34);
    color: white;
    position: fixed; 
    bottom: 0;
    width: 100%;
    display: flex;
    text-wrap: wrap;
    text-align: center;
    justify-content: space-around;
}

.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgb(152, 198, 227);
    max-width: 60%;
    padding: 20px;
    margin: 25px auto;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    align-self: center;
}

h1 a, .naslov {
    text-decoration: none;
}