#loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    font-family: system-ui, sans-serif;
}

#loading-overlay.hidden { display: none; }

#loading-box {
    text-align: center;
    max-width: 380px;
    padding: 32px;
}

#loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid #e0e0e0;
    border-top-color: #555;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

#loading-overlay.error #loading-spinner { display: none; }

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

#loading-title {
    font-size: 18px;
    font-weight: 600;
    color: #222;
    margin: 0 0 8px;
}

#loading-overlay.error #loading-title { color: #c0392b; }

#loading-text {
    font-size: 14px;
    color: #555;
    margin: 0 0 6px;
}

#loading-note {
    font-size: 12px;
    color: #999;
    margin: 0;
}