/* 3D Viewer CSS & Interactive Controls */
.view-3d-btn {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--accent-color, #ff9800);
    border: 1px solid var(--accent-color, #ff9800);
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 800;
    font-size: 13px;
    z-index: 15;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.view-3d-btn:hover {
    background: var(--accent-color, #ff9800);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(var(--accent-rgb, 255, 152, 0), 0.4);
}

.view-3d-btn:active {
    transform: translateY(0);
}

/* 3D Floating Control Toolbar */
.model3d-toolbar {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    gap: 8px;
    z-index: 12;
}

.model3d-tool-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-color, #fff);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.model3d-tool-btn:hover {
    background: rgba(var(--accent-rgb, 255, 152, 0), 0.2);
    border-color: var(--accent-color, #ff9800);
    color: var(--accent-color, #ff9800);
    transform: scale(1.05);
}

.model3d-tool-btn.active {
    background: var(--accent-color, #ff9800);
    color: #000;
    border-color: var(--accent-color, #ff9800);
}

/* 3D Bottom Interaction Hints */
.model3d-hints {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-muted, #94a3b8);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    pointer-events: none;
    z-index: 12;
    display: flex;
    align-items: center;
    gap: 10px;
}

#model3d-container canvas {
    touch-action: none;
    display: block;
    outline: none;
}

/* Fullscreen 3D Mode */
#model3d-container:fullscreen,
#model3d-container:-webkit-full-screen {
    width: 100vw !important;
    height: 100vh !important;
    background: #0b0f19 !important;
    border-radius: 0 !important;
}

.model3d-fullscreen-active {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
    background: #0b0f19 !important;
    border-radius: 0 !important;
}

@media (max-width: 600px) {
    .model3d-hints {
        display: none;
    }
}