.instance-card-menu {
        position: absolute;
        background: var(--surface-muted);
        border-radius: 10px;
        border: 1px solid var(--surface-border);
        box-shadow: var(--shadow-soft);
        z-index: 3000;

        /* ⭐ auto-size */
        padding: 6px;
    }

    .instance-card-menu.hidden {
        display: none;
    }

    .instance-menu-icon {
        background: none;
        border: none;
        cursor: pointer;

        font-size: 14px;
        line-height: 1;

        padding: 8px;
        border-radius: 8px;

        color: var(--accent-primary);
    }

    .instance-menu-icon:hover {
        background: color-mix(in srgb, var(--accent-primary), transparent 85%);
    }

    .instance-card-top {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .instance-more-btn {
        background: none;
        border: none;
        color: var(--text-secondary);
        font-size: 18px;
        cursor: pointer;
        padding: 4px 6px;
    }

    .instance-more-btn:hover {
        color: var(--text-primary);
    }

    .instance-card-menu .danger {
        color: #ef4444;
    }

    .hidden {
        display: none;
    }

    #instanceCancelBtn {
        background: var(--surface-base);
        color: var(--text-primary);
    }

    #instanceCreateBtn {
        background: var(--accent-primary);
        color: var(--text-on-accent);
    }

    .instance-overlay {
        position: fixed;
        inset: 0;
        background: color-mix(in srgb, var(--surface-base), transparent 25%);
        backdrop-filter: blur(12px);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 9999;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease;
    }

    .instance-overlay.show {
        opacity: 1;
        pointer-events: auto;
    }

    .instance-overlay-inner {
        width: min(900px, 90vw);
        background: var(--surface-elevated);
        border-radius: 18px;
        padding: 28px;
        border: 1px solid var(--surface-border);
        box-shadow: var(--shadow-elevated);
        transform: translateY(20px) scale(0.96);
        transition: transform 0.25s ease;
    }

    .instance-overlay.show .instance-overlay-inner {
        transform: translateY(0) scale(1);
    }
    .instance-overlay.force-create,
    .instance-overlay.force-create .instance-overlay-inner {
        transition: none;
        transform: none;
    }

    .instance-title {
        font-size: 22px;
        margin-bottom: 18px;
        text-align: center;
        color: var(--text-primary);
    }

    .instance-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 18px;
    }

    .instance-card {
        background: var(--surface-base);
        border-radius: 14px;
        padding: 18px;
        cursor: pointer;
        border: 1px solid var(--surface-border);
        transition: transform 0.2s ease, box-shadow 0.2s ease;
        color: var(--text-primary);
    }

    .instance-card:hover {
        transform: translateY(-6px) scale(1.02);
        box-shadow: var(--shadow-elevated);
    }

    .instance-card.active {
        outline: 2px solid var(--accent-primary);
    }
    .instance-card.disabled {
        opacity: 0.5;
        cursor: not-allowed;
        pointer-events: none;
        transform: none;
        box-shadow: none;
    }

    .instance-name {
        font-size: 18px;
        margin-bottom: 10px;
    }

    .instance-meta {
        font-size: 13px;
        color: var(--text-secondary);
    }

    .instance-new {
        margin-top: 22px;
        width: 100%;
        padding: 14px;
        border-radius: 12px;
        border: none;
        background: var(--accent-primary);
        color: var(--text-on-accent);
        font-size: 16px;
        cursor: pointer;
    }

    #instanceBtn {
        background: var(--surface-hover);
        padding: 6px 14px;
        border-radius: 8px;
        border: none;
        color: var(--text-primary);
        cursor: pointer;
        font-size: 15px;
        transition: background 0.2s ease;
    }

    #instanceBtn:hover {
        background: var(--surface-elevated);
    }