:root {
    --bg-primary: #273833;
    --bg-secondary: #56564F;
    --text-primary: #C1ECEB;
    --text-accent: #37FCEE;
    --border: #438F92;
}

body {
    margin: 0;
    padding: 0;
    background-image: url('./images/image.jpg'); 
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

h1, p{
    color: var(--text-accent);
}

.main{
    width:50vw;
    border-radius: 100px;
    margin: 4rem auto;
    padding: 1rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 30px;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-secondary);
    border: 3px solid var(--border);
}

#user-input{
    width: 80%;
    max-width: 300px;
    padding: 12px 16px;
    background-color: var(--bg-primary); 
    color: var(--text-primary);            
    font-size: 19px;
    border: 1px solid var(--border); 
    border-radius: 8px;
    transition: all 0.3s ease;
}

#output{
    width: 50%;
    max-width: 300px;
    padding: 12px 16px;
    background-color: var(--bg-primary); 
    color: var(--text-primary);            
    font-size: 19px;
    border: 1px solid var(--border); 
    border-radius: 8px;
    transition: all 0.3s ease;
}


.btn-for-user{
    display: flex;
    justify-content: space-evenly;
    width:80%;
}

#add-item,#show-total{
    background-color: var(--text-accent); 
    color: var(--bg-primary);            
    padding: 12px 28px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
}


.ip-footer {
    width: 100%;
    background-color: var(--bg-primary); 
    color: var(--text-primary); 
    text-align: center;
    padding: 16px 0;
    font-size: 0.85rem; 
    margin: 5px auto;
    position: absolute;
    bottom: 0;
    left: 0;
}

@media (max-width: 600px) {
    body {
        aspect-ratio: auto;
        min-height: 100vh;
    }
    
    .main {
        width: 90vw;
        margin: 2rem auto;
        border-radius: 32px;
        padding: 1.5rem 1rem;
        text-align: center;
    }
    
    #user_input, 
    #output {
        width: 80%;
        max-width: none;
    }
}