/* ============================================================================
   Панель управления 3D (общая для всех страниц)
   ============================================================================ */

.performance-panel {
    position: fixed;
    bottom: 20px;
    left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: var(--z-controls);
    opacity: 0.3;
    transition: opacity 0.3s;
}

    .performance-panel:hover {
        opacity: 1;
    }

.perf-btn {
    padding: 10px 16px;
    background: rgba(10,14,20,0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 20px;
    color: var(--color-text-primary);
    font-family: 'Manrope', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s var(--ease-soft);
    min-width: 180px;
}

    .perf-btn:focus-visible {
        outline: 2px solid var(--color-accent-blue);
        outline-offset: 2px;
    }

    .perf-btn:hover {
        background: rgba(79,195,247,0.15);
        border-color: rgba(79,195,247,0.4);
        transform: translateY(-3px);
    }

    .perf-btn.active {
        background: rgba(79,195,247,0.25);
        border-color: rgba(79,195,247,0.6);
    }

.perf-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    transition: transform 0.5s var(--ease-soft);
}

.perf-btn:hover .perf-icon {
    transform: scale(1.2);
}

.perf-label {
    white-space: nowrap;
    flex: 1;
    text-align: left;
}

@media (max-width: 768px) {
    .performance-panel {
        bottom: 10px;
        left: 10px;
        right: 10px;
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }

    .perf-btn {
        min-width: auto;
        padding: 8px 12px;
        font-size: 0.8rem;
        flex: 1;
    }

    .perf-label {
        display: none;
    }
}