body {text-align: center; }
        .container { max-width: 550px; margin: 0 auto; background: white; padding: 10px; border-radius: 8px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
        .controls { display: flex;}
        .control-group { text-align: center; }
        
        /* 색상 선택기 스타일 */
        #colorPicker {
            width: 80px;
            height: 80px;
            padding: 0;
            border: 4px solid #007bff;
            border-radius: 50%;
            cursor: pointer;
            margin: 10px auto;
            box-sizing: content-box;
        }

        /* 이미지 추출 섹션 스타일 */
        #imageLoader { margin-bottom: 10px; }
        #imageCanvas { 
            border: 2px dashed #4CAF50; 
            cursor: crosshair;
            margin-top: 10px;
            max-width: 100%;
            height: auto;
        }

        /* 결과 표시 스타일 */
        #colorOutput {
            margin-top: 25px;
            font-size: 28px;
            font-weight: bold;
            padding: 15px;
            border-radius: 8px;
            display: inline-block;
            min-width: 200px;
            text-align: center;
            border: 1px solid #ddd;
            transition: all 0.2s ease-in-out;
            cursor: pointer;
            position: relative;
        }
        
        /* 복사 성공 메시지 스타일 */
        #copyMessage {
            position: absolute;
            bottom: -30px;
            left: 50%;
            transform: translateX(-50%);
            background: #28a745;
            color: white;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 14px;
            visibility: hidden;
            opacity: 0;
            transition: opacity 0.3s;
        }
        #colorOutput:active {
            transform: scale(0.98);
        }