diff --git a/app/src/main/java/com/medithings/vesiscan/ui/components/AlertModalDialog.kt b/app/src/main/java/com/medithings/vesiscan/ui/components/AlertModalDialog.kt
new file mode 100644
index 0000000..dc51ecb
--- /dev/null
+++ b/app/src/main/java/com/medithings/vesiscan/ui/components/AlertModalDialog.kt
@@ -0,0 +1,139 @@
+package com.medithings.vesiscan.ui.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+
+/**
+ * 전면 모달 알람 다이얼로그 — semantic 배경색 위 아이콘/타이틀/서브/설명 + 확인 버튼.
+ *
+ * 통합 대상 (2026-07-10):
+ *  - Wakeup Alarm (주황, LYING → NON_LYING/WALKING 전이)
+ *  - Walking Alarm (빨강, WALKING 전이 즉시 낙상 경고)
+ *  - Detach Alert (주황, 센서 분리)
+ *
+ * 사용 예:
+ * ```
+ * if (showWakeupAlarm) {
+ *     AlertModalDialog(
+ *         backgroundColor = MlWarning,
+ *         icon = Icons.Default.WbSunny,
+ *         title = stringResource(R.string.wakeup_detected_title),
+ *         subtitle = stringResource(R.string.wakeup_safely_get_up),
+ *         detail = stringResource(R.string.alarm_lying_duration, mins, secs),
+ *         onConfirm = { showWakeupAlarm = false },
+ *     )
+ * }
+ * ```
+ *
+ * 접근성:
+ *  - 기본은 `dismissOnBackPress = false / dismissOnClickOutside = false`
+ *    (의료 알람은 사용자 명시적 확인 필요). 필요 시 [dismissible]=true 로 override.
+ */
+@Composable
+fun AlertModalDialog(
+    backgroundColor: Color,
+    icon: ImageVector,
+    title: String,
+    subtitle: String? = null,
+    detail: String? = null,
+    confirmLabel: String,
+    onConfirm: () -> Unit,
+    widthFraction: Float = 0.92f,
+    iconSize: androidx.compose.ui.unit.Dp = 56.dp,
+    titleSize: androidx.compose.ui.unit.TextUnit = 28.sp,
+    dismissible: Boolean = false,
+) {
+    Dialog(
+        onDismissRequest = { if (dismissible) onConfirm() },
+        properties = DialogProperties(
+            dismissOnBackPress = dismissible,
+            dismissOnClickOutside = dismissible,
+        )
+    ) {
+        Box(
+            modifier = Modifier
+                .fillMaxWidth(widthFraction)
+                .clip(RoundedCornerShape(24.dp))
+                .background(backgroundColor)
+                .padding(horizontal = 28.dp, vertical = 36.dp),
+            contentAlignment = Alignment.Center,
+        ) {
+            Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                Icon(
+                    imageVector = icon,
+                    contentDescription = null,
+                    tint = Color.White,
+                    modifier = Modifier.size(iconSize),
+                )
+                Spacer(modifier = Modifier.height(12.dp))
+                Text(
+                    text = title,
+                    fontSize = titleSize,
+                    fontWeight = FontWeight.ExtraBold,
+                    color = Color.White,
+                    textAlign = TextAlign.Center,
+                )
+                if (subtitle != null) {
+                    Spacer(modifier = Modifier.height(6.dp))
+                    Text(
+                        text = subtitle,
+                        fontSize = 16.sp,
+                        fontWeight = FontWeight.Medium,
+                        color = Color.White.copy(alpha = 0.9f),
+                        textAlign = TextAlign.Center,
+                    )
+                }
+                if (detail != null) {
+                    Spacer(modifier = Modifier.height(8.dp))
+                    Text(
+                        text = detail,
+                        fontSize = 14.sp,
+                        color = Color.White.copy(alpha = 0.85f),
+                        textAlign = TextAlign.Center,
+                    )
+                }
+                Spacer(modifier = Modifier.height(24.dp))
+                Button(
+                    onClick = onConfirm,
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = Color.White,
+                        contentColor = backgroundColor,
+                    ),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(56.dp),
+                    shape = RoundedCornerShape(14.dp),
+                ) {
+                    Text(
+                        text = confirmLabel,
+                        fontSize = 20.sp,
+                        fontWeight = FontWeight.Bold,
+                    )
+                }
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/com/medithings/vesiscan/ui/theme/Color.kt b/app/src/main/java/com/medithings/vesiscan/ui/theme/Color.kt
index 563572d..0d9eedd 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/theme/Color.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/theme/Color.kt
@@ -2,7 +2,7 @@ package com.medithings.vesiscan.ui.theme
 
 import androidx.compose.ui.graphics.Color
 
-// Material theme colors
+// Material theme colors (legacy — Material3 template default. 실사용 X, LightColorScheme 를 MlPrimary 로 override.)
 val Purple80 = Color(0xFFD0BCFF)
 val PurpleGrey80 = Color(0xFFCCC2DC)
 val Pink80 = Color(0xFFEFB8C8)
@@ -10,7 +10,7 @@ val Purple40 = Color(0xFF6650a4)
 val PurpleGrey40 = Color(0xFF625b71)
 val Pink40 = Color(0xFF7D5260)
 
-// MediLight theme colors
+// ─────────── Brand colors ───────────
 val MlPrimary = Color(0xFF008FFF)
 val MlTeal = Color(0xFF00DB9F)
 val MlBackground = Color(0xFFF5F8FF)
@@ -18,3 +18,27 @@ val MlCardBackground = Color.White
 val MlSecondaryText = Color(0xFF80808C)
 val MlInputBackground = Color(0xFFF5F8FF)
 val MlInputBorder = Color(0xFF00DB9F)
+
+// ─────────── Semantic tokens (2026-07-10) ───────────
+// 매직 hex 코드가 각 파일에 흩어져 있어 일관성 관리 어려움 → semantic 이름으로 통일.
+// 새 UI 코드는 반드시 아래 토큰을 사용. 기존 코드는 점진적으로 마이그레이션.
+
+/** Critical / danger — 위치 놓침, 기기 응답 없음, 낙상 위험, walking alarm 등. */
+val MlCritical = Color(0xFFD32F2F)
+/** Warning — 배터리 낮음, firmware 구버전, mtb 응답 지연, 자동 업로드 일부 실패, wakeup 알람 등. */
+val MlWarning = Color(0xFFFF9800)
+/** Success — GREEN zone, 정렬 완료, 자동 업로드 성공, NON_LYING posture chip 등. */
+val MlSuccess = Color(0xFF4CAF50)
+/** Info — 자동 업로드 진행 중, "확인 중" 등의 중립 정보. */
+val MlInfo = Color(0xFF1976D2)
+/** Neutral — UNKNOWN posture, disable 상태의 회색 아이콘 등. */
+val MlNeutral = Color(0xFF616161)
+/** Purple accent — dev toggle, alignment algo selector 등 dev 전용 UI. */
+val MlAccentPurple = Color(0xFF7C3AED)
+
+/** Container / background alpha helpers.
+ *  카드/배너 배경으로 semantic 색 사용 시 알파 12~15% 가 일관적.
+ *  사용 예: `MlWarning.copy(alpha = ContainerAlpha)`. */
+const val ContainerAlpha = 0.15f
+/** 배지/inline 강조 (chip 배경 등). */
+const val ChipAlpha = 0.12f
diff --git a/app/src/main/java/com/medithings/vesiscan/ui/theme/Theme.kt b/app/src/main/java/com/medithings/vesiscan/ui/theme/Theme.kt
index 544080d..f597429 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/theme/Theme.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/theme/Theme.kt
@@ -3,21 +3,25 @@ package com.medithings.vesiscan.ui.theme
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color
 
+// 2026-07-10: Purple40 기반 Material3 default 를 MediLight 브랜드 색상으로 override.
+//   기존에는 colorScheme.primary = Purple40 (Material 템플릿 기본) 이지만 실제 UI 는
+//   MlPrimary 사용 → MaterialTheme 를 참조하는 default 컴포넌트 (예: Button 배경) 와
+//   커스텀 UI 사이에 색상 불일치 발생했음. brand 색상으로 통일.
 private val LightColorScheme = lightColorScheme(
-    primary = Purple40,
-    secondary = PurpleGrey40,
-    tertiary = Pink40
-
-    /* Other default colors to override
-    background = Color(0xFFFFFBFE),
-    surface = Color(0xFFFFFBFE),
+    primary = MlPrimary,
     onPrimary = Color.White,
+    secondary = MlTeal,
     onSecondary = Color.White,
+    tertiary = MlAccentPurple,
     onTertiary = Color.White,
+    background = MlBackground,
     onBackground = Color(0xFF1C1B1F),
+    surface = MlCardBackground,
     onSurface = Color(0xFF1C1B1F),
-    */
+    error = MlCritical,
+    onError = Color.White,
 )
 
 @Composable
diff --git a/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalHomeView.kt b/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalHomeView.kt
index 8e176b5..19d4e6b 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalHomeView.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/views/clinical/ClinicalHomeView.kt
@@ -144,25 +144,28 @@ fun ClinicalHomeView(appState: AppState) {
 
         // 2026-07-09: 자동 업로드 진행/결과 배너.
         if (autoUploadPending > 0 || autoUploadingName != null) {
+            // 2026-07-10: semantic token 사용 (MlInfo = 진행 중 파랑).
             Row(
                 modifier = Modifier.fillMaxWidth()
                     .clip(RoundedCornerShape(10.dp))
-                    .background(Color(0xFF1976D2).copy(alpha = 0.12f))
+                    .background(com.medithings.vesiscan.ui.theme.MlInfo.copy(
+                        alpha = com.medithings.vesiscan.ui.theme.ChipAlpha))
                     .padding(horizontal = 12.dp, vertical = 8.dp),
                 verticalAlignment = Alignment.CenterVertically
             ) {
                 CircularProgressIndicator(
                     modifier = Modifier.size(16.dp),
                     strokeWidth = 2.dp,
-                    color = Color(0xFF1976D2)
+                    color = com.medithings.vesiscan.ui.theme.MlInfo
                 )
                 Spacer(Modifier.width(10.dp))
                 Column {
                     Text("자동 업로드 진행 중 · 남은 세션 $autoUploadPending",
                         fontSize = 13.sp, fontWeight = FontWeight.SemiBold,
-                        color = Color(0xFF1976D2))
+                        color = com.medithings.vesiscan.ui.theme.MlInfo)
                     autoUploadingName?.let {
-                        Text(it, fontSize = 11.sp, color = Color(0xFF1976D2).copy(alpha = 0.8f),
+                        Text(it, fontSize = 11.sp,
+                            color = com.medithings.vesiscan.ui.theme.MlInfo.copy(alpha = 0.8f),
                             maxLines = 1)
                     }
                 }
@@ -171,7 +174,9 @@ fun ClinicalHomeView(appState: AppState) {
         } else if (autoUploadResult != null) {
             val msg = autoUploadResult ?: ""
             val hasFail = msg.contains("failed")
-            val bg = if (hasFail) Color(0xFFFF9800) else Color(0xFF4CAF50)
+            // 2026-07-10: semantic token 사용 (MlWarning 실패 / MlSuccess 완료).
+            val bg = if (hasFail) com.medithings.vesiscan.ui.theme.MlWarning
+                     else com.medithings.vesiscan.ui.theme.MlSuccess
             Row(
                 modifier = Modifier.fillMaxWidth()
                     .clip(RoundedCornerShape(10.dp))
diff --git a/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PiezoMonitoringView.kt b/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PiezoMonitoringView.kt
index 791264e..d940cc2 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PiezoMonitoringView.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PiezoMonitoringView.kt
@@ -156,99 +156,35 @@ fun PiezoMonitoringView(appState: AppState) {
     // 직전 walking 상태 추적 — false → true 전이 시 critical 알람
     var prevIsWalking by remember { mutableStateOf(false) }
     // Wakeup alarm (warning, 주황) — LYING → NON_LYING/WALKING 전이
+    // 2026-07-10: 3개 알람 Dialog 를 AlertModalDialog 로 통합 (ui/components/AlertModalDialog.kt).
     if (showWakeupAlarm) {
-        androidx.compose.ui.window.Dialog(
-            onDismissRequest = { },
-            properties = androidx.compose.ui.window.DialogProperties(
-                dismissOnBackPress = false, dismissOnClickOutside = false
-            )
-        ) {
-            Box(
-                modifier = Modifier
-                    .fillMaxWidth(0.92f)
-                    .clip(RoundedCornerShape(24.dp))
-                    .background(Color(0xFFFF9800))   // Material Orange 500
-                    .padding(horizontal = 28.dp, vertical = 36.dp),
-                contentAlignment = Alignment.Center
-            ) {
-                Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                    Icon(Icons.Default.Warning, contentDescription = null,
-                        tint = Color.White, modifier = Modifier.size(56.dp))
-                    Spacer(modifier = Modifier.height(12.dp))
-                    Text(stringResource(R.string.alarm_patient_woke_up), fontSize = 28.sp,
-                        fontWeight = FontWeight.ExtraBold, color = Color.White,
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(6.dp))
-                    Text(stringResource(R.string.alarm_patient_woke_up_en), fontSize = 16.sp,
-                        fontWeight = FontWeight.Medium, color = Color.White.copy(alpha = 0.9f),
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(8.dp))
-                    val mins = wakeupAlarmElapsedSec / 60
-                    val secs = wakeupAlarmElapsedSec % 60
-                    Text(stringResource(R.string.alarm_lying_duration, mins, secs),
-                        fontSize = 14.sp, color = Color.White.copy(alpha = 0.85f))
-                    Spacer(modifier = Modifier.height(24.dp))
-                    Button(
-                        onClick = { showWakeupAlarm = false },
-                        colors = ButtonDefaults.buttonColors(
-                            containerColor = Color.White, contentColor = Color(0xFFFF9800)
-                        ),
-                        modifier = Modifier.fillMaxWidth().height(56.dp),
-                        shape = RoundedCornerShape(14.dp)
-                    ) {
-                        Text(stringResource(R.string.confirm), fontSize = 20.sp, fontWeight = FontWeight.Bold)
-                    }
-                }
-            }
-        }
+        val mins = wakeupAlarmElapsedSec / 60
+        val secs = wakeupAlarmElapsedSec % 60
+        com.medithings.vesiscan.ui.components.AlertModalDialog(
+            backgroundColor = com.medithings.vesiscan.ui.theme.MlWarning,
+            icon = Icons.Default.Warning,
+            title = stringResource(R.string.alarm_patient_woke_up),
+            subtitle = stringResource(R.string.alarm_patient_woke_up_en),
+            detail = stringResource(R.string.alarm_lying_duration, mins, secs),
+            confirmLabel = stringResource(R.string.confirm),
+            onConfirm = { showWakeupAlarm = false },
+        )
     }
 
     // Walking alarm (critical, 빨강) — NON_LYING/LYING → WALKING 전이 (보행 시작)
     if (showWalkingAlarm) {
-        androidx.compose.ui.window.Dialog(
-            onDismissRequest = { },
-            properties = androidx.compose.ui.window.DialogProperties(
-                dismissOnBackPress = false, dismissOnClickOutside = false
-            )
-        ) {
-            Box(
-                modifier = Modifier
-                    .fillMaxWidth(0.94f)
-                    .clip(RoundedCornerShape(24.dp))
-                    .background(Color(0xFFD32F2F))
-                    .padding(horizontal = 28.dp, vertical = 36.dp),
-                contentAlignment = Alignment.Center
-            ) {
-                Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                    Icon(Icons.Default.DirectionsWalk, contentDescription = null,
-                        tint = Color.White, modifier = Modifier.size(64.dp))
-                    Spacer(modifier = Modifier.height(12.dp))
-                    Text(stringResource(R.string.alarm_patient_walking), fontSize = 30.sp,
-                        fontWeight = FontWeight.ExtraBold, color = Color.White,
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(6.dp))
-                    Text(stringResource(R.string.alarm_patient_walking_en),
-                        fontSize = 16.sp, fontWeight = FontWeight.Medium,
-                        color = Color.White.copy(alpha = 0.92f),
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(8.dp))
-                    Text(stringResource(R.string.alarm_immediate_check),
-                        fontSize = 14.sp, color = Color.White.copy(alpha = 0.9f),
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(24.dp))
-                    Button(
-                        onClick = { showWalkingAlarm = false },
-                        colors = ButtonDefaults.buttonColors(
-                            containerColor = Color.White, contentColor = Color(0xFFD32F2F)
-                        ),
-                        modifier = Modifier.fillMaxWidth().height(56.dp),
-                        shape = RoundedCornerShape(14.dp)
-                    ) {
-                        Text(stringResource(R.string.confirm), fontSize = 20.sp, fontWeight = FontWeight.Bold)
-                    }
-                }
-            }
-        }
+        com.medithings.vesiscan.ui.components.AlertModalDialog(
+            backgroundColor = com.medithings.vesiscan.ui.theme.MlCritical,
+            icon = Icons.Default.DirectionsWalk,
+            title = stringResource(R.string.alarm_patient_walking),
+            subtitle = stringResource(R.string.alarm_patient_walking_en),
+            detail = stringResource(R.string.alarm_immediate_check),
+            confirmLabel = stringResource(R.string.confirm),
+            onConfirm = { showWalkingAlarm = false },
+            widthFraction = 0.94f,
+            iconSize = 64.dp,
+            titleSize = 30.sp,
+        )
     }
 
     val screenWidth = LocalConfiguration.current.screenWidthDp
diff --git a/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt b/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt
index 3e43aa1..694643d 100644
--- a/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt
+++ b/app/src/main/java/com/medithings/vesiscan/ui/views/monitoring/PlacementGuideView.kt
@@ -208,50 +208,18 @@ fun PlacementGuideView(appState: AppState) {
     )
 
     // 센서 분리 알림 (주황 warning) — wakeup 알람과 동일 패턴
+    // 2026-07-10: AlertModalDialog 로 통합 (ui/components/AlertModalDialog.kt).
     if (showDetachAlert) {
-        androidx.compose.ui.window.Dialog(
-            onDismissRequest = { },
-            properties = androidx.compose.ui.window.DialogProperties(
-                dismissOnBackPress = false, dismissOnClickOutside = false
-            )
-        ) {
-            Box(
-                modifier = Modifier
-                    .fillMaxWidth(0.92f)
-                    .clip(RoundedCornerShape(24.dp))
-                    .background(Color(0xFFFF9800))   // Material Orange 500
-                    .padding(horizontal = 28.dp, vertical = 36.dp),
-                contentAlignment = Alignment.Center
-            ) {
-                Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                    Icon(Icons.Default.Warning, contentDescription = null,
-                        tint = Color.White, modifier = Modifier.size(56.dp))
-                    Spacer(modifier = Modifier.height(12.dp))
-                    Text(stringResource(R.string.sensor_detached_title), fontSize = 26.sp,
-                        fontWeight = FontWeight.ExtraBold, color = Color.White,
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(6.dp))
-                    Text(stringResource(R.string.sensor_detached_subtitle), fontSize = 16.sp,
-                        fontWeight = FontWeight.Medium, color = Color.White.copy(alpha = 0.9f),
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(8.dp))
-                    Text(stringResource(R.string.sensor_detached_desc),
-                        fontSize = 14.sp, color = Color.White.copy(alpha = 0.85f),
-                        textAlign = TextAlign.Center)
-                    Spacer(modifier = Modifier.height(24.dp))
-                    Button(
-                        onClick = { showDetachAlert = false },
-                        colors = ButtonDefaults.buttonColors(
-                            containerColor = Color.White, contentColor = Color(0xFFFF9800)
-                        ),
-                        modifier = Modifier.fillMaxWidth().height(56.dp),
-                        shape = RoundedCornerShape(14.dp)
-                    ) {
-                        Text(stringResource(R.string.confirm), fontSize = 20.sp, fontWeight = FontWeight.Bold)
-                    }
-                }
-            }
-        }
+        com.medithings.vesiscan.ui.components.AlertModalDialog(
+            backgroundColor = com.medithings.vesiscan.ui.theme.MlWarning,
+            icon = Icons.Default.Warning,
+            title = stringResource(R.string.sensor_detached_title),
+            subtitle = stringResource(R.string.sensor_detached_subtitle),
+            detail = stringResource(R.string.sensor_detached_desc),
+            confirmLabel = stringResource(R.string.confirm),
+            onConfirm = { showDetachAlert = false },
+            titleSize = 26.sp,
+        )
     }
 
     Column(