/* Measurement Labels - Modern Styling */

.measurement-label {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(245, 245, 245, 0.98) 100%);
    color: #191919;
    padding: 8px 14px;
    border-radius: 8px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.08);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    text-align: center;
    letter-spacing: 0.3px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    /* Disable transitions for precise positioning */
    transition: none;
    /* Force hardware acceleration for crisp rendering */
    transform: translateZ(0);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-font-smoothing: subpixel-antialiased;
}

/* Variant for object lines (darker) */
.measurement-label.object-line {
    background: linear-gradient(135deg, rgba(25, 25, 25, 0.95) 0%, rgba(40, 40, 40, 0.95) 100%);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.15);
}

/* Larger size for orthographic camera */
.measurement-label.ortho {
    font-size: 10px;
    padding: 4px 4px;
    border-radius: 10px;
}

/* Perspective camera size */
.measurement-label.perspective {
    font-size: 10px;
    padding: 4px 4px;
    border-radius: 6px;
}

/* Optional hover effect (disabled for precise positioning) */
.measurement-label:hover {
    /* Removed transform to prevent smooth movement */
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0, 0, 0, 0.12);
}

/* CSS2DRenderer container styling */
#css2d-renderer {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1;
}