@keyframes settingsPopupFadeIn {
            from { opacity: 0; transform: scale(0.95); }
            to { opacity: 1; transform: scale(1); }
        }
        .settings-theme-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 8px;
        }
        .settings-theme-item {
            display: block;
            cursor: pointer;
            padding: 4px;
            border-radius: 8px;
            transition: background 0.2s;
            background: rgba(255,255,255,0.05);
            border: 1px solid transparent;
        }
        .settings-theme-item:hover {
            background: rgba(255,255,255,0.15);
            border-color: rgba(255,255,255,0.1);
        }
        .settings-theme-preview {
            width: 100%;
            min-height: 24px;
            border-radius: 4px;
            border: 1px solid rgba(255,255,255,0.2);
            position: relative;
            overflow: hidden;
            cursor: crosshair;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: #ffffff;
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 0.2px;
            text-shadow: 0 1px 2px rgba(0,0,0,0.55);
            padding: 2px 6px;
        }
        .settings-theme-hit-marker {
            position: absolute;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px rgba(0,0,0,0.35), 0 2px 8px rgba(0,0,0,0.45);
            transform: translate(-50%, -50%);
            pointer-events: none;
        }
        .settings-theme-label {
            display: none;
        }