html, body {
    margin: 0;
    padding: 0;
}

canvas {
    display: block;
    z-index: -1;
}

#header_logo {
    position: absolute;
    top: 30px;
    left: 30px;
    height: 100px;
    z-index: 9999;
}

#topleft_icons {
    position: absolute;
    top: 20px;
    left: 30px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 0;
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.topleft_icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 28px;
    cursor: pointer;
    color: #888;
    transition: color 0.2s;
}

.topleft_icon:hover {
    color: #3D9970;
}

.topleft_icon i {
    font-size: 16px;
    margin: 0;
}

#volume_icon {
    position: absolute;
    bottom: 20px;
    left: 30px;
    height: 30px;
    z-index: 9999;
}

#trail_icon {
    position: absolute;
    bottom: 20px;
    left: 80px;
    height: 30px;
    z-index: 9999;
}

#connector_ui {
    position: absolute;
    bottom: 20px;
    right: 30px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 0;
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.connector_icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 28px;
    cursor: pointer;
    color: #888;
    transition: color 0.2s;
}

.connector_icon:hover {
    color: #3D9970;
}

.connector_icon i {
    font-size: 16px;
    margin: 0;
}

.connector_indicator {
    position: absolute;
    bottom: 0;
    right: 2px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #ccc;
    border: 1px solid #fff;
    transition: background-color 0.2s;
}

.connector_icon.active .connector_indicator {
    background-color: #3D9970;
}

.connector_popup {
    position: absolute;
    bottom: 65px;
    right: 30px;
    z-index: 10000;
    background-color: #fff;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: none;
    min-width: 220px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.connector_popup.visible {
    display: block;
}

.connector_popup_header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid #eee;
    font-size: 13px;
    font-weight: 600;
    color: #555;
}

.connector_popup_header i {
    cursor: pointer;
    color: #888;
    transition: color 0.2s;
}

.connector_popup_header i:hover {
    color: #333;
}

.connector_popup_content {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#connector_address {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

#connector_address:focus {
    border-color: #3D9970;
}

#connector_btn {
    padding: 8px 12px;
    border: 1px solid #3D9970;
    border-radius: 4px;
    background-color: #fff;
    color: #3D9970;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

#connector_btn:hover {
    background-color: #3D9970;
    color: #fff;
}

#connector_btn.connected {
    background-color: #3D9970;
    border-color: #3D9970;
    color: #fff;
}

#connector_btn.connected:hover {
    background-color: #c9302c;
    border-color: #c9302c;
}

#confirm_calibration_btn {
    position: absolute;
    z-index: 9999;
    display: none;
}

.ui_item:hover {
    cursor: pointer;
}

#main_menu {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}