/* ── Loading overlay ─────────────────────────────── */
#loading-overlay {
    position: fixed;
    inset: 0;
    background: #1c1c1c;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease;
}

#loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

.loading-error-msg {
    display: none;
    color: #aaa;
    font-size: 0.95rem;
    margin-top: 20px;
    text-align: center;
    line-height: 1.6;
}

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

#loading-overlay.error .loading-error-msg {
    display: block;
}