#drop-zone {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 75%;
    max-width: 100%;
    height: 200px;
    padding: 1.5em;
    border: 2px dashed #888888;
    border-radius: 12px;
    color: #666666;
    background-color: #fafafa;
    cursor: pointer;
    margin: auto;
    text-align: center;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

#drop-zone:hover {
    background-color: #f0f0f0;
    border-color: #555555;
}

#file-input {
    display: none;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #ccc;
    border-top-color: #666;
    border-radius: 50%;
    animation: spinner-rotate 1s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

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

.stage {
    margin-bottom: 1.5em;
    padding-bottom: 1em;
    border-bottom: 1px solid #eee;
}

.stage:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

#emulator-download-progress {
    font-size: 1.5em;
    margin-top: 0.85em;
    margin-bottom: 0.85em;
    text-align: center;
}

#download-progress-small {
    font-size: 0.9em;
    color: #555;
}

#download-progress-bar-bg {
    background: #eee;
    height: 6px;
    border-radius: 3px;
    margin-top: 5px;
}

#download-progress-bar {
    background: #3daee9;
    height: 100%;
    border-radius: 3px;
}