.letters-column {
    height: calc(100vh - 56px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0.5rem;
    overflow: hidden;
}

.letter-item {
    font-size: clamp(1rem, 2vw, 1.8rem);
    font-weight: bold;
    text-align: center;
    padding: 0.25rem;
    margin: 0.5rem 0;
    border-radius: 0.25rem;
    background-color: white;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    transition: transform 0.2s;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    cursor: pointer;
}

.letter-item.selected {
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    z-index: 10;
    position: relative;
}

.letter-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

@media (max-width: 576px) {
    .letters-column {
        padding: 0.25rem;
    }
    
    .letter-item {
        margin: 0.25rem 0;
        padding: 0.1rem;
    }
}

/* Modal styles */
.modal-content {
    background-color: #343a40;
    color: white;
}

.modal-header {
    border-bottom: 1px solid #495057;
}

.modal-footer {
    border-top: 1px solid #495057;
}

#pairContent {
    max-height: 60vh;
    overflow-y: auto;
}

#modalProgress {
    height: 100%;
}

.progress {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0;
    overflow: hidden;
    margin: 0;
}