/* ==========================================================
   3D LAB PAGE
   ========================================================== */

#page-lab {
    overflow: hidden;
    position: relative;
}

/* ── Full-bleed Canvas ── */
#lab-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    cursor: grab;
    touch-action: none;
    z-index: 1;
}

#lab-canvas:active {
    cursor: grabbing;
}

/* ── Page Layout ── */
.lab-page {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

/* ── Corner Header (top-left overlay) ── */
.lab-header {
    position: absolute;
    top: calc(var(--nav-h) + var(--space-8));
    left: var(--space-8);
    z-index: 10;
    pointer-events: none;
}

.lab-header__label {
    font-family: var(--font-head);
    font-size: var(--size-xs);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--clr-primary);
    margin-bottom: var(--space-2);
}

.lab-header__title {
    font-family: var(--font-head);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--clr-text);
}

.lab-header__title span {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Controls Panel (bottom-center) ── */
.lab-controls {
    position: absolute;
    bottom: var(--space-10);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

/* Shutter Button */
.lab-shutter {
    position: relative;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--grad-primary);
    border: none;
    cursor: pointer;
    box-shadow: 0 0 0 6px rgba(192, 160, 98, 0.12), 0 8px 32px rgba(192, 160, 98, 0.3);
    transition: transform 0.15s var(--ease-out), box-shadow 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.lab-shutter:hover {
    transform: scale(1.06);
    box-shadow: 0 0 0 8px rgba(192, 160, 98, 0.15), 0 12px 40px rgba(192, 160, 98, 0.4);
}

.lab-shutter:active {
    transform: scale(0.93);
}

.lab-shutter__icon {
    font-size: 1.5rem;
    line-height: 1;
    pointer-events: none;
}

/* Hint pills */
.lab-hints {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    justify-content: center;
}

.lab-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(192, 160, 98, 0.14);
    font-size: var(--size-xs);
    color: var(--clr-muted);
    white-space: nowrap;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 8px rgba(192, 160, 98, 0.06);
}

.lab-hint strong {
    color: var(--clr-primary);
    font-weight: 600;
}

/* ── Side Controls (right) ── */
.lab-side-controls {
    position: absolute;
    right: var(--space-8);
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.lab-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(192, 160, 98, 0.14);
    font-size: var(--size-xs);
    font-weight: 600;
    color: var(--clr-text);
    cursor: pointer;
    transition: background var(--dur-fast), border-color var(--dur-fast),
        transform var(--dur-fast), box-shadow var(--dur-fast);
    white-space: nowrap;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.lab-btn:hover {
    background: rgba(46, 49, 56, 0.97);
    border-color: rgba(192, 160, 98, 0.3);
    transform: translateX(-3px);
    box-shadow: 0 4px 16px rgba(192, 160, 98, 0.1);
}

.lab-btn.active {
    background: var(--grad-primary);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 20px rgba(192, 160, 98, 0.3);
}

/* ── Part Tooltip ── */
.lab-tooltip {
    position: fixed;
    z-index: 200;
    pointer-events: none;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-md);
    background: rgba(241, 245, 249, 0.9);
    color: #fff;
    font-size: var(--size-xs);
    font-weight: 600;
    letter-spacing: 0.05em;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(192, 160, 98, 0.3);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.15s;
    transform: translate(-50%, -130%);
}

.lab-tooltip.visible {
    opacity: 1;
}

/* ── Flash Overlay ── */
.lab-flash {
    position: fixed;
    inset: 0;
    z-index: 9000;
    background: #fff;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.05s;
}

.lab-flash.active {
    opacity: 0.95;
}

/* ── Shot Counter ── */
.lab-shot-counter {
    position: absolute;
    top: calc(var(--nav-h) + var(--space-8));
    right: var(--space-8);
    z-index: 10;
    font-family: var(--font-head);
    font-size: var(--size-sm);
    font-weight: 700;
    color: var(--clr-muted);
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(192, 160, 98, 0.12);
    border-radius: var(--radius-md);
    padding: 0.4rem 0.9rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.lab-shot-counter span {
    color: var(--clr-primary);
}

/* ── Particle Canvas (for burst effect) ── */
#lab-particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 8999;
}

/* ── Object Selector Tabs (vertical, left side) ── */
.lab-object-tabs {
    position: absolute;
    top: calc(var(--nav-h) + var(--space-8) + 110px);
    left: var(--space-8);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: 6px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(192, 160, 98, 0.12);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 24px rgba(192, 160, 98, 0.08);
    pointer-events: auto;
}

.lab-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.45rem 0.9rem;
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    font-size: var(--size-xs);
    font-weight: 600;
    color: var(--clr-muted);
    cursor: pointer;
    transition: all 0.25s var(--ease-out);
    white-space: nowrap;
}

.lab-tab:hover {
    background: rgba(192, 160, 98, 0.08);
    color: var(--clr-text);
}

.lab-tab.active {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: 0 2px 12px rgba(192, 160, 98, 0.3);
}

.lab-tab__icon {
    font-size: 1rem;
    line-height: 1;
}

.lab-tab__name {
    pointer-events: none;
    font-size: var(--size-xs);
}

/* ── Action Label ── */
.lab-action-label {
    font-family: var(--font-head);
    font-size: var(--size-xs);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--clr-primary);
    margin-top: var(--space-2);
    text-align: center;
}

/* ── Mobile responsive ── */
@media (max-width: 768px) {
    .lab-side-controls {
        right: var(--space-4);
        bottom: 260px;
        top: auto;
        transform: none;
        flex-direction: row;
    }

    .lab-header {
        left: var(--space-4);
    }

    .lab-header__title {
        font-size: 1.25rem;
    }

    .lab-shutter {
        width: 60px;
        height: 60px;
    }

    .lab-object-tabs {
        top: auto;
        bottom: 200px;
        left: var(--space-4);
        max-height: 50vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .lab-object-tabs::-webkit-scrollbar {
        display: none;
    }

    .lab-tab__name {
        display: none;
    }

    .lab-tab {
        padding: 0.35rem 0.65rem;
        font-size: 0.65rem;
    }

    .lab-tab__icon {
        font-size: 0.85rem;
    }
}