beautified UI

app/src/main/java/com/example/studentfaceregistry/MainActivity.kt

@@ -4,6 +4,7 @@ import android.Manifest
 import android.content.SharedPreferences
 import android.content.pm.PackageManager
 import android.graphics.Bitmap
+import android.graphics.Outline
 import android.graphics.Rect
 import android.graphics.RectF
 import android.graphics.Typeface
@@ -14,9 +15,11 @@ import android.util.Size
 import android.util.Log
 import android.view.Gravity
 import android.view.View
+import android.view.ViewOutlineProvider
 import android.widget.EditText
 import android.widget.Button
 import android.widget.FrameLayout
+import android.widget.ImageView
 import android.widget.LinearLayout
 import android.widget.TextView
 import android.widget.Toast
@@ -143,27 +146,116 @@ class MainActivity : AppCompatActivity() {
         cameraExecutor.shutdown()
     }
 
+    private fun dp(value: Int): Int {
+        return (value * resources.displayMetrics.density).toInt()
+    }
+
+    private fun primaryButton(text: String, onClick: () -> Unit): Button {
+        return Button(this).apply {
+            this.text = text
+            textSize = 16f
+            setTextColor(0xFFFFFFFF.toInt())
+            typeface = Typeface.DEFAULT_BOLD
+            isAllCaps = false
+            setBackgroundResource(R.drawable.bg_button_primary)
+            minHeight = dp(48)
+            setPadding(dp(22), 0, dp(22), 0)
+            setOnClickListener { onClick() }
+        }
+    }
+
+    private fun secondaryButton(text: String, onClick: () -> Unit): Button {
+        return Button(this).apply {
+            this.text = text
+            textSize = 16f
+            setTextColor(0xFF1D4ED8.toInt())
+            typeface = Typeface.DEFAULT_BOLD
+            isAllCaps = false
+            setBackgroundResource(R.drawable.bg_button_secondary)
+            minHeight = dp(48)
+            setPadding(dp(22), 0, dp(22), 0)
+            setOnClickListener { onClick() }
+        }
+    }
+
+    private fun cardButton(iconRes: Int, title: String, subtitle: String, onClick: () -> Unit): View {
+        return LinearLayout(this).apply {
+            orientation = LinearLayout.HORIZONTAL
+            gravity = Gravity.CENTER_VERTICAL
+            setBackgroundResource(R.drawable.bg_card_click)
+            isClickable = true
+            isFocusable = true
+            elevation = dp(3).toFloat()
+            setPadding(dp(20), dp(18), dp(20), dp(18))
+            setOnClickListener { onClick() }
+
+            addView(FrameLayout(this@MainActivity).apply {
+                layoutParams = LinearLayout.LayoutParams(dp(52), dp(52))
+                setBackgroundResource(R.drawable.bg_button_primary)
+                addView(ImageView(this@MainActivity).apply {
+                    layoutParams = FrameLayout.LayoutParams(dp(28), dp(28), Gravity.CENTER)
+                    setImageResource(iconRes)
+                })
+            })
+
+            addView(LinearLayout(this@MainActivity).apply {
+                orientation = LinearLayout.VERTICAL
+                layoutParams = LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                setPadding(dp(16), 0, 0, 0)
+
+                addView(TextView(this@MainActivity).apply {
+                    text = title
+                    textSize = 18f
+                    typeface = Typeface.DEFAULT_BOLD
+                    setTextColor(0xFF0F172A.toInt())
+                })
+                addView(TextView(this@MainActivity).apply {
+                    text = subtitle
+                    textSize = 13f
+                    setTextColor(0xFF64748B.toInt())
+                    setPadding(0, dp(4), 0, 0)
+                })
+            })
+
+            addView(TextView(this@MainActivity).apply {
+                text = "›"
+                textSize = 26f
+                setTextColor(0xFF94A3B8.toInt())
+            })
+        }
+    }
+
     private fun createContentView(): View {
         val root = LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
-            setBackgroundColor(0xFFF8FAFC.toInt())
+            setBackgroundColor(0xFFF1F5F9.toInt())
         }
 
         val header = LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
-            setPadding(32, 28, 32, 20)
+            setBackgroundResource(R.drawable.bg_header)
+            setPadding(dp(24), dp(58), dp(24), dp(18))
         }
         header.addView(TextView(this).apply {
             text = "学生人脸识别"
-            textSize = 24f
-            setTextColor(0xFF0F172A.toInt())
+            textSize = 22f
+            typeface = Typeface.DEFAULT_BOLD
+            setTextColor(0xFFFFFFFF.toInt())
         })
         countText = TextView(this).apply {
             text = "已入库 0 名学生"
-            textSize = 15f
-            setTextColor(0xFF475569.toInt())
+            textSize = 13f
+            setTextColor(0xFFFFFFFF.toInt())
+            setBackgroundResource(R.drawable.bg_chip_white)
+            setPadding(dp(12), dp(6), dp(12), dp(6))
         }
-        header.addView(countText)
+        header.addView(
+            countText,
+            LinearLayout.LayoutParams(
+                LinearLayout.LayoutParams.WRAP_CONTENT,
+                LinearLayout.LayoutParams.WRAP_CONTENT
+            ).apply { topMargin = dp(10) }
+        )
 
         val content = FrameLayout(this).apply {
             layoutParams = LinearLayout.LayoutParams(
@@ -192,66 +284,83 @@ class MainActivity : AppCompatActivity() {
     private fun createHomePanel(): View {
         return LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
-            gravity = Gravity.CENTER
-            setPadding(40, 40, 40, 40)
+            gravity = Gravity.CENTER_HORIZONTAL
+            setPadding(dp(24), dp(36), dp(24), dp(36))
 
             addView(TextView(this@MainActivity).apply {
                 text = "请选择要进入的功能"
-                textSize = 26f
+                textSize = 22f
                 typeface = Typeface.DEFAULT_BOLD
                 setTextColor(0xFF0F172A.toInt())
                 gravity = Gravity.CENTER
             })
 
             addView(TextView(this@MainActivity).apply {
-                text = "识别和注册上传分开运行，减少同时占用相机、模型和本地服务带来的卡顿。"
-                textSize = 16f
-                setTextColor(0xFF475569.toInt())
+                text = "识别与注册上传分开运行，避免同时占用相机和模型导致卡顿。"
+                textSize = 14f
+                setTextColor(0xFF64748B.toInt())
                 gravity = Gravity.CENTER
-                setPadding(0, 20, 0, 36)
+                setPadding(0, dp(10), 0, dp(28))
             })
 
-            addView(Button(this@MainActivity).apply {
-                text = "进入识别"
-                textSize = 20f
-                setPadding(36, 24, 36, 24)
-                setOnClickListener { switchMode(AppMode.RECOGNITION) }
-            })
+            addView(
+                cardButton(
+                    R.drawable.ic_face_scan,
+                    "进入识别",
+                    "打开摄像头，实时识别学生身份"
+                ) { switchMode(AppMode.RECOGNITION) },
+                LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.MATCH_PARENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT
+                ).apply { bottomMargin = dp(16) }
+            )
 
-            addView(Button(this@MainActivity).apply {
-                text = "进入注册上传"
-                textSize = 20f
-                setPadding(36, 24, 36, 24)
-                setOnClickListener { switchMode(AppMode.UPLOAD) }
-            })
+            addView(
+                cardButton(
+                    R.drawable.ic_upload,
+                    "进入注册上传",
+                    "上传学生照片或视频，更新人脸库"
+                ) { switchMode(AppMode.UPLOAD) },
+                LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.MATCH_PARENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT
+                )
+            )
         }
     }
 
     private fun createRecognitionPanel(): View {
         return LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
-            setPadding(24, 16, 24, 24)
+            setPadding(dp(16), dp(12), dp(16), dp(16))
 
             recognitionStatusText = TextView(this@MainActivity).apply {
                 text = "准备进入识别模式"
-                textSize = 22f
+                textSize = 18f
                 typeface = Typeface.DEFAULT_BOLD
                 setTextColor(0xFF0F172A.toInt())
-                setPadding(8, 8, 8, 20)
+                setPadding(dp(8), dp(4), dp(8), dp(12))
             }
             addView(recognitionStatusText)
 
             val matcherConfigPanel = LinearLayout(this@MainActivity).apply {
                 orientation = LinearLayout.VERTICAL
-                setPadding(16, 16, 16, 16)
-                setBackgroundColor(0xFFF1F5F9.toInt())
+                setPadding(dp(16), dp(14), dp(16), dp(14))
+                setBackgroundResource(R.drawable.bg_panel_light)
             }
 
-            matcherConfigSummaryText = TextView(this@MainActivity).apply {
+            matcherConfigPanel.addView(TextView(this@MainActivity).apply {
+                text = "识别参数"
                 textSize = 14f
-                setTextColor(0xFF475569.toInt())
+                typeface = Typeface.DEFAULT_BOLD
+                setTextColor(0xFF0F172A.toInt())
+            })
+
+            matcherConfigSummaryText = TextView(this@MainActivity).apply {
+                textSize = 12f
+                setTextColor(0xFF64748B.toInt())
                 text = matcherConfigSummary()
-                setPadding(0, 0, 0, 12)
+                setPadding(0, dp(2), 0, dp(10))
             }
             matcherConfigPanel.addView(matcherConfigSummaryText)
 
@@ -262,7 +371,7 @@ class MainActivity : AppCompatActivity() {
             val euclideanColumn = LinearLayout(this@MainActivity).apply {
                 orientation = LinearLayout.VERTICAL
                 layoutParams = LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
-                setPadding(0, 0, 12, 0)
+                setPadding(0, 0, dp(8), 0)
             }
             euclideanColumn.addView(TextView(this@MainActivity).apply {
                 text = "欧氏阈值"
@@ -273,15 +382,25 @@ class MainActivity : AppCompatActivity() {
                 setText(formatThreshold(euclideanThreshold))
                 hint = "0.00"
                 inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_FLAG_DECIMAL
+                textSize = 15f
                 setTextColor(0xFF0F172A.toInt())
-                setBackgroundColor(0xFFFFFFFF.toInt())
-                setPadding(20, 18, 20, 18)
+                setBackgroundResource(R.drawable.bg_input)
+                setPadding(dp(12), 0, dp(12), 0)
+                minHeight = dp(44)
             }
-            euclideanColumn.addView(euclideanThresholdInput)
+            euclideanColumn.addView(
+                euclideanThresholdInput,
+                LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.MATCH_PARENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT
+                ).apply { topMargin = dp(6) }
+            )
+            thresholdRow.addView(euclideanColumn)
 
             val cosineColumn = LinearLayout(this@MainActivity).apply {
                 orientation = LinearLayout.VERTICAL
                 layoutParams = LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                setPadding(dp(8), 0, 0, 0)
             }
             cosineColumn.addView(TextView(this@MainActivity).apply {
                 text = "余弦阈值"
@@ -291,26 +410,37 @@ class MainActivity : AppCompatActivity() {
             cosineThresholdInput = EditText(this@MainActivity).apply {
                 setText(formatThreshold(cosineThreshold))
                 hint = "0.00"
-                inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_FLAG_DECIMAL or InputType.TYPE_NUMBER_FLAG_SIGNED
+                inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_FLAG_DECIMAL
+                textSize = 15f
                 setTextColor(0xFF0F172A.toInt())
-                setBackgroundColor(0xFFFFFFFF.toInt())
-                setPadding(20, 18, 20, 18)
+                setBackgroundResource(R.drawable.bg_input)
+                setPadding(dp(12), 0, dp(12), 0)
+                minHeight = dp(44)
             }
-            cosineColumn.addView(cosineThresholdInput)
-
-            thresholdRow.addView(euclideanColumn)
+            cosineColumn.addView(
+                cosineThresholdInput,
+                LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.MATCH_PARENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT
+                ).apply { topMargin = dp(6) }
+            )
             thresholdRow.addView(cosineColumn)
             matcherConfigPanel.addView(thresholdRow)
 
-            matcherConfigPanel.addView(Button(this@MainActivity).apply {
-                text = "保存识别参数"
-                setOnClickListener { saveMatcherConfig() }
-            })
-            matcherConfigPanel.addView(Button(this@MainActivity).apply {
-                text = "自动校准阈值"
-                setOnClickListener { applySuggestedThresholds() }
-            })
+            matcherConfigPanel.addView(LinearLayout(this@MainActivity).apply {
+                orientation = LinearLayout.HORIZONTAL
+                setPadding(0, dp(12), 0, 0)
 
+                addView(
+                    secondaryButton("自动校准阈值") { applySuggestedThresholds() },
+                    LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                        .apply { rightMargin = dp(8) }
+                )
+                addView(
+                    primaryButton("保存识别参数") { saveMatcherConfig() },
+                    LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                )
+            })
             addView(matcherConfigPanel)
 
             val cameraFrame = FrameLayout(this@MainActivity).apply {
@@ -319,39 +449,51 @@ class MainActivity : AppCompatActivity() {
                     0,
                     1f
                 )
+                setBackgroundResource(R.drawable.bg_camera_frame)
+                setPadding(dp(4), dp(4), dp(4), dp(4))
             }
+            cameraFrame.addView(
+                FrameLayout(this@MainActivity).apply {
+                    clipToOutline = true
+                    outlineProvider = object : ViewOutlineProvider() {
+                        override fun getOutline(view: View, outline: Outline) {
+                            outline.setRoundRect(0, 0, view.width, view.height, dp(16).toFloat())
+                        }
+                    }
+
                     previewView = PreviewView(this@MainActivity).apply {
                         scaleType = PreviewView.ScaleType.FILL_CENTER
                         implementationMode = PreviewView.ImplementationMode.COMPATIBLE
                     }
                     overlayView = OverlayView(this@MainActivity)
-            cameraFrame.addView(previewView, FrameLayout.LayoutParams(-1, -1))
-            cameraFrame.addView(overlayView, FrameLayout.LayoutParams(-1, -1))
+                    addView(previewView, FrameLayout.LayoutParams(-1, -1))
+                    addView(overlayView, FrameLayout.LayoutParams(-1, -1))
+                },
+                FrameLayout.LayoutParams(-1, -1)
+            )
             addView(cameraFrame)
 
             addView(LinearLayout(this@MainActivity).apply {
                 gravity = Gravity.CENTER
                 orientation = LinearLayout.HORIZONTAL
-                setPadding(12, 20, 12, 8)
+                setPadding(dp(12), dp(16), dp(12), 0)
 
-                addView(Button(this@MainActivity).apply {
-                    text = "返回首页"
-                    setOnClickListener { switchMode(AppMode.HOME) }
-                })
+                addView(
+                    secondaryButton("返回首页") { switchMode(AppMode.HOME) },
+                    LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                        .apply { rightMargin = dp(10) }
+                )
 
-                pauseRecognitionButton = Button(this@MainActivity).apply {
-                    text = "暂停识别"
-                    setOnClickListener {
+                pauseRecognitionButton = primaryButton("暂停识别") {
                     recognitionEnabled = !recognitionEnabled
-                        text = if (recognitionEnabled) "暂停识别" else "继续识别"
+                    pauseRecognitionButton.text = if (recognitionEnabled) "暂停识别" else "继续识别"
                     recognitionStatusText.text = if (recognitionEnabled) "正在识别" else "识别已暂停"
                     if (!recognitionEnabled) {
                         overlayView.update(emptyList())
                     }
                     updateAnalyzerState()
                 }
-                }
-                addView(pauseRecognitionButton)
+                addView(pauseRecognitionButton, LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f))
             })
         }
     }
@@ -360,11 +502,11 @@ class MainActivity : AppCompatActivity() {
         return LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
             gravity = Gravity.CENTER_HORIZONTAL
-            setPadding(40, 48, 40, 48)
+            setPadding(dp(24), dp(32), dp(24), dp(32))
 
             uploadStatusText = TextView(this@MainActivity).apply {
                 text = "准备进入注册上传模式"
-                textSize = 24f
+                textSize = 20f
                 typeface = Typeface.DEFAULT_BOLD
                 setTextColor(0xFF0F172A.toInt())
                 gravity = Gravity.CENTER
@@ -373,38 +515,62 @@ class MainActivity : AppCompatActivity() {
 
             addView(TextView(this@MainActivity).apply {
                 setText(R.string.upload_instructions)
-                textSize = 16f
-                setTextColor(0xFF475569.toInt())
+                textSize = 14f
+                setTextColor(0xFF64748B.toInt())
                 gravity = Gravity.CENTER
-                setPadding(0, 16, 0, 20)
+                setPadding(0, dp(10), 0, dp(24))
             })
 
+            addView(
+                LinearLayout(this@MainActivity).apply {
+                    orientation = LinearLayout.VERTICAL
+                    setBackgroundResource(R.drawable.bg_card)
+                    elevation = dp(3).toFloat()
+                    setPadding(dp(18), dp(16), dp(18), dp(16))
+
+                    addView(TextView(this@MainActivity).apply {
+                        text = "上传地址"
+                        textSize = 12f
+                        setTextColor(0xFF64748B.toInt())
+                    })
                     uploadUrlText = TextView(this@MainActivity).apply {
                         text = "-"
-                textSize = 20f
+                        textSize = 18f
                         typeface = Typeface.MONOSPACE
                         setTextColor(0xFF0F172A.toInt())
                         gravity = Gravity.CENTER
-                setPadding(24, 20, 24, 20)
+                        setPadding(dp(12), dp(12), dp(12), dp(12))
                         setTextIsSelectable(true)
-                setBackgroundColor(0xFFE2E8F0.toInt())
+                        setBackgroundResource(R.drawable.bg_input)
                     }
-            addView(uploadUrlText)
+                    addView(
+                        uploadUrlText,
+                        LinearLayout.LayoutParams(
+                            LinearLayout.LayoutParams.MATCH_PARENT,
+                            LinearLayout.LayoutParams.WRAP_CONTENT
+                        ).apply { topMargin = dp(8) }
+                    )
+                },
+                LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.MATCH_PARENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT
+                )
+            )
 
             addView(LinearLayout(this@MainActivity).apply {
                 gravity = Gravity.CENTER
                 orientation = LinearLayout.HORIZONTAL
-                setPadding(12, 28, 12, 8)
+                setPadding(0, dp(24), 0, 0)
 
-                addView(Button(this@MainActivity).apply {
-                    text = "刷新地址"
-                    setOnClickListener { startUploadSession() }
-                })
-
-                addView(Button(this@MainActivity).apply {
-                    text = "返回首页"
-                    setOnClickListener { switchMode(AppMode.HOME) }
-                })
+                addView(
+                    secondaryButton("刷新地址") { startUploadSession() },
+                    LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                        .apply { rightMargin = dp(10) }
+                )
+                addView(
+                    primaryButton("返回首页") { switchMode(AppMode.HOME) },
+                    LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f)
+                )
             })
         }
     }

app/src/main/java/com/example/studentfaceregistry/ui/OverlayView.kt

@@ -20,10 +20,16 @@ class OverlayView @JvmOverloads constructor(
     attrs: AttributeSet? = null
 ) : View(context, attrs) {
 
+    // 识别框外发光画笔
+    private val glowPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        style = Paint.Style.STROKE
+        strokeWidth = 14f
+    }
+
     // 识别框画笔
     private val boxPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
         style = Paint.Style.STROKE
-        strokeWidth = 6f
+        strokeWidth = 5f
     }
 
     // 标签背景画笔
@@ -31,22 +37,29 @@ class OverlayView @JvmOverloads constructor(
         style = Paint.Style.FILL
     }
 
+    // 标签投影画笔
+    private val labelShadowPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        style = Paint.Style.FILL
+        color = Color.argb(70, 0, 0, 0)
+    }
+
     // 标签文字画笔
     private val labelPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
         color = Color.WHITE
-        textSize = 48f
-        typeface = Typeface.DEFAULT_BOLD
+        textSize = 40f
+        typeface = Typeface.create("sans-serif-medium", Typeface.BOLD)
     }
 
     // 置信度文字画笔
     private val confidencePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
         color = Color.WHITE
-        textSize = 32f
+        textSize = 30f
+        typeface = Typeface.create("sans-serif-medium", Typeface.NORMAL)
     }
 
     // 颜色定义
     private val colorMatch = Color.rgb(34, 197, 94)      // 绿色 - 匹配成功
-    private val colorUnsure = Color.rgb(234, 179, 8)    // 黄色 - 不确定
+    private val colorUnsure = Color.rgb(245, 158, 11)    // 橙色 - 不确定
     private val colorNoMatch = Color.rgb(239, 68, 68)    // 红色 - 未匹配
     private val colorUnknown = Color.rgb(59, 130, 246)   // 蓝色 - 识别中
 
@@ -72,43 +85,74 @@ class OverlayView @JvmOverloads constructor(
         val boxColor = getBoxColor(item.result)
         boxPaint.color = boxColor
 
-        // 绘制识别框
-        canvas.drawRect(rect.left, rect.top, rect.right, rect.bottom, boxPaint)
+        // 外发光（半透明描边）
+        glowPaint.color = boxColor and 0x00FFFFFF or 0x4D000000.toInt()
+        canvas.drawRoundRect(rect, 14f, 14f, glowPaint)
+
+        // 绘制识别框（圆角）
+        canvas.drawRoundRect(rect, 14f, 14f, boxPaint)
 
         // 绘制标签背景
         val label = item.label
         val labelWidth = labelPaint.measureText(label)
-        val labelHeight = 60f
-        val padding = 12f
+        val labelHeight = 52f
+        val padding = 14f
 
         // 标签在框上方
-        val labelLeft = rect.left + padding
-        val labelTop = (rect.top - labelHeight - padding).coerceAtLeast(padding)
+        val labelLeft = rect.left + 4f
+        val labelTop = (rect.top - labelHeight - 10f).coerceAtLeast(padding)
         val labelRight = labelLeft + labelWidth + padding * 2
         val labelBottom = labelTop + labelHeight
 
-        // 标签背景颜色与框颜色一致
+        // 标签投影
+        canvas.drawRoundRect(
+            labelLeft,
+            labelTop + 3f,
+            labelRight,
+            labelBottom + 3f,
+            labelHeight / 2f,
+            labelHeight / 2f,
+            labelShadowPaint
+        )
+
+        // 标签背景颜色与框颜色一致（胶囊形）
         labelBackgroundPaint.color = boxColor
-        canvas.drawRoundRect(labelLeft, labelTop, labelRight, labelBottom, 8f, 8f, labelBackgroundPaint)
+        canvas.drawRoundRect(
+            labelLeft,
+            labelTop,
+            labelRight,
+            labelBottom,
+            labelHeight / 2f,
+            labelHeight / 2f,
+            labelBackgroundPaint
+        )
 
         // 绘制标签文字
-        canvas.drawText(label, labelLeft + padding, labelTop + 38f, labelPaint)
+        canvas.drawText(label, labelLeft + padding, labelTop + 36f, labelPaint)
 
         // 如果有置信度信息，显示在标签右侧
         if (item.confidence != null) {
             val confidenceText = "${(item.confidence * 100).toInt()}%"
             val confidenceWidth = confidencePaint.measureText(confidenceText)
-            val confLeft = labelRight + 8f
-            val confTop = labelTop + 8f
-            val confRight = confLeft + confidenceWidth + 16f
-            val confBottom = confTop + 44f
+            val chipLeft = labelRight + 8f
+            val chipTop = labelTop + 6f
+            val chipRight = chipLeft + confidenceWidth + 22f
+            val chipBottom = chipTop + 40f
 
-            // 置信度背景（半透明黑色）
-            labelBackgroundPaint.color = Color.argb(180, 0, 0, 0)
-            canvas.drawRoundRect(confLeft, confTop, confRight, confBottom, 6f, 6f, labelBackgroundPaint)
+            // 置信度背景（深色半透明胶囊）
+            labelBackgroundPaint.color = Color.argb(210, 15, 23, 42)
+            canvas.drawRoundRect(
+                chipLeft,
+                chipTop,
+                chipRight,
+                chipBottom,
+                20f,
+                20f,
+                labelBackgroundPaint
+            )
 
             // 置信度文字
-            canvas.drawText(confidenceText, confLeft + 8f, confTop + 30f, confidencePaint)
+            canvas.drawText(confidenceText, chipLeft + 11f, chipTop + 27f, confidencePaint)
         }
     }
 

app/src/main/res/drawable/bg_button_primary.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#33FFFFFF">
+    <item>
+        <shape>
+            <gradient
+                android:angle="270"
+                android:startColor="#2E6BFF"
+                android:endColor="#1D4ED8" />
+            <corners android:radius="16dp" />
+        </shape>
+    </item>
+</ripple>

app/src/main/res/drawable/bg_button_secondary.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#1A2563EB">
+    <item>
+        <shape>
+            <solid android:color="#FFFFFF" />
+            <corners android:radius="16dp" />
+            <stroke
+                android:width="1dp"
+                android:color="#CBD5E1" />
+        </shape>
+    </item>
+</ripple>

app/src/main/res/drawable/bg_camera_frame.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="20dp" />
+    <stroke
+        android:width="1dp"
+        android:color="#E2E8F0" />
+</shape>

app/src/main/res/drawable/bg_card.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="20dp" />
+    <stroke
+        android:width="1dp"
+        android:color="#E2E8F0" />
+</shape>

app/src/main/res/drawable/bg_card_click.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#1A2563EB">
+    <item>
+        <shape>
+            <solid android:color="#FFFFFF" />
+            <corners android:radius="20dp" />
+            <stroke
+                android:width="1dp"
+                android:color="#E2E8F0" />
+        </shape>
+    </item>
+</ripple>

app/src/main/res/drawable/bg_chip_white.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#26FFFFFF" />
+    <corners android:radius="999dp" />
+</shape>

app/src/main/res/drawable/bg_header.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <gradient
+        android:angle="270"
+        android:startColor="#2E6BFF"
+        android:endColor="#1D4ED8" />
+</shape>

app/src/main/res/drawable/bg_input.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="12dp" />
+    <stroke
+        android:width="1dp"
+        android:color="#CBD5E1" />
+</shape>

app/src/main/res/drawable/bg_panel_light.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#F1F5F9" />
+    <corners android:radius="16dp" />
+</shape>

app/src/main/res/drawable/ic_face_scan.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M12,6.4 A4.2,4.2 0 1 1 12,14.8 A4.2,4.2 0 1 1 12,6.4 Z"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="1.7"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M6.2,20.2 A5.8,5.8 0 0 1 17.8,20.2"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="1.7"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M4,8.2 L4,5.2 C4,4.55 4.55,4 5.2,4 L8.2,4"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="1.8"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M15.8,4 L18.8,4 C19.45,4 20,4.55 20,5.2 L20,8.2"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="1.8"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M4,15.8 L4,18.8 C4,19.45 4.55,20 5.2,20 L8.2,20"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="1.8"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M15.8,20 L18.8,20 C19.45,20 20,19.45 20,18.8 L20,15.8"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="1.8"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+</vector>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -1,4 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="#1D4ED8" />
+    <gradient
+        android:angle="315"
+        android:startColor="#3B82F6"
+        android:centerColor="#2563EB"
+        android:endColor="#1E40AF" />
 </shape>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:pathData="M54,32 A15,15 0 1 1 54,62 A15,15 0 1 1 54,32 Z"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="5"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M36,84 A18,18 0 0 1 72,84"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="5"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M25,40 L25,33 C25,30.6 26.6,29 29,29 L36,29"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="5"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M72,29 L79,29 C81.4,29 83,30.6 83,33 L83,40"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="5"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M25,68 L25,75 C25,77.4 26.6,79 29,79 L36,79"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="5"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M72,79 L79,79 C81.4,79 83,77.4 83,75 L83,68"
+        android:strokeColor="#7DD3FC"
+        android:strokeWidth="5"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+</vector>

app/src/main/res/drawable/ic_upload.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:pathData="M6.2,18.6 L17.8,18.6 A3.2,3.2 0 0 0 17.9,12.3 A4.6,4.6 0 0 0 8.9,10.6 A3.6,3.6 0 0 0 6.2,18.6 Z"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="1.7"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M12,14.6 L12,8.4"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="1.8"
+        android:strokeLineCap="round"
+        android:fillColor="#00000000" />
+    <path
+        android:pathData="M9.2,11.2 L12,8.4 L14.8,11.2"
+        android:strokeColor="#FFFFFF"
+        android:strokeWidth="1.8"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:fillColor="#00000000" />
+</vector>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
 </adaptive-icon>

app/src/main/res/values/styles.xml

@@ -2,7 +2,11 @@
 <resources>
     <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
         <item name="android:fontFamily">sans</item>
-        <item name="android:windowLightStatusBar">true</item>
+        <item name="android:windowLightStatusBar">false</item>
+        <item name="android:statusBarColor">#1D4ED8</item>
+        <item name="android:windowBackground">#F1F5F9</item>
         <item name="android:colorAccent">#2563EB</item>
+        <item name="android:windowLightNavigationBar">false</item>
+        <item name="android:navigationBarColor">#F1F5F9</item>
     </style>
 </resources>