.container-left {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    background-color: #ffffff;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    margin-bottom: 1rem;
}

.container-right {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    background-color: #ffffff;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    margin-bottom: 1rem;
}

body {
    background-color: #f8f9fa;
}

@media (min-width: 992px) {
    #input-column,
    #results-column {
        height: calc(100vh - 3rem); 
        overflow-y: auto;
        position: sticky;
        display: sticky;
    }
}

h1 {
    color: #333;
    font-weight: 600;
}

#predict-btn {
    font-size: 1.1rem;
    font-weight: 500;
    margin-top: 1rem;
}

#result-card .card-header {
    font-weight: 500;
}

#result-text {
    font-weight: 700;
    font-size: 2rem;
}

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    vertical-align: text-bottom;
    border: .2em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border .75s linear infinite;
    margin-right: .5rem;
}

@keyframes spinner-border {
    to { transform: rotate(360deg); }
}