.upgrade-line {
    font-family: monospace;
    color: lime;
    font-size: 13px;
    margin-bottom: 0.5rem;
}

.upgrade-terminal {
    .big-button {
        margin-left: 0;
        margin-bottom: 0;
    }
    padding-bottom: 0;
}

.upgrade-button {
    color: black;
    font-family: monospace;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
}

.upgrade-button[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
}

:root {
    --purchaseable-color: #4CAF50;
    --purchaseable-color-hover: #5CBF60;
    --unavailable-color: #666;
}

.upgrade-buttons-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: stretch;
    justify-content: flex-start;
}

/* Target the forms created by button_to */
.upgrade-buttons-group form {
    flex: 1;
    min-width: 0;
    max-width: 150px;
    display: flex;
}

.upgrade-buttons-group .upgrade-button {
    background: var(--purchaseable-color);
    border: 1px solid #45a049;
    border-radius: 4px;
    color: white;
    font-family: monospace;
    font-size: 12px;
    padding: 0.4rem 0.6rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upgrade-buttons-group .upgrade-button:hover:not([disabled]):not(.unavailable) {
    background: var(--purchaseable-color-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.upgrade-buttons-group .upgrade-button[disabled],
.upgrade-buttons-group .upgrade-button.insufficient-funds,
.upgrade-buttons-group .upgrade-button.unavailable {
    background: var(--unavailable-color);
    border-color: #555;
    color: #999;
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.upgrade-buttons-group .upgrade-button[disabled]:hover,
.upgrade-buttons-group .upgrade-button.insufficient-funds:hover,
.upgrade-buttons-group .upgrade-button.unavailable:hover {
    transform: none;
    box-shadow: none;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .upgrade-buttons-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .upgrade-buttons-group form {
        max-width: none;
        width: 100%;
    }
    
    .upgrade-buttons-group .upgrade-button {
        max-width: none;
        width: 100%;
    }
}