* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #e3f2fd;
    color: #1565c0;
    padding: 30px 15px;
}

.glavna {
    max-width: 900px;
    margin: 0 auto;
}

.zaglavlje {
    text-align: center;
    margin-bottom: 40px;
}

.zaglavlje h2 {
    font-size: 32px;
    color: #0d47a1;
}

.oblici {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.oblik-link {
    flex: 1;
    min-width: 100px;
    padding: 20px 10px;
    background-color: white;
    border: 2px solid #90caf9;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    color: #1976d2;
}

.oblik-link:hover {
    background-color: #bbdefb;
}

.oblik-link svg {
    width: 40px;
    height: 40px;
    stroke: currentColor;
    margin-bottom: 8px;
}

.oblik-link p {
    font-weight: 600;
    font-size: 14px;
}

.sadrzaj {
    display: none;
}

.sadrzaj:target {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.info, .forma {
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #90caf9;
}

.info-naslov {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.info-naslov svg {
    width: 45px;
    height: 45px;
    stroke: #1976d2;
}

.info-naslov h3 {
    font-size: 24px;
    color: #0d47a1;
}

.info p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.formule {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.formula {
    padding: 12px;
    background-color: #e1f5fe;
    border-radius: 6px;
    border-left: 4px solid #0288d1;
}

.formula span {
    font-weight: 600;
}

.forma h3 {
    font-size: 20px;
    color: #0d47a1;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    margin-top: 12px;
    margin-bottom: 5px;
    font-weight: 600;
    color: #1565c0;
}

input {
    padding: 10px;
    border: 2px solid #90caf9;
    border-radius: 6px;
    font-size: 16px;
}

input:focus {
    outline: none;
    border-color: #1976d2;
}

button {
    margin-top: 20px;
    padding: 12px;
    background-color: #1976d2;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

button:hover {
    background-color: #1565c0;
}

.rezultat {
    max-width: 500px;
    margin: 0 auto;
}

.povratak {
    display: inline-block;
    padding: 10px 20px;
    background-color: white;
    color: #1976d2;
    text-decoration: none;
    border: 2px solid #90caf9;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 600;
}

.povratak:hover {
    background-color: #bbdefb;
}

.vrijednosti {
    margin: 20px 0;
}

.vrijednosti p {
    margin: 8px 0;
}

@media (max-width: 768px) {
    .sadrzaj:target {
        grid-template-columns: 1fr;
    }
    
    .oblici {
        flex-direction: column;
    }
}