gitignore update

app/src/main/java/com/sunzones/ui/addlocation/AddLocationSheet.kt

@@ -34,6 +34,7 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
@@ -47,6 +48,7 @@ fun AddLocationSheet(
 ) {
     val uiState by viewModel.uiState.collectAsState()
     val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+    val focusManager = LocalFocusManager.current
 
     val locationPermissionLauncher = rememberLauncherForActivityResult(
         contract = ActivityResultContracts.RequestMultiplePermissions()
@@ -60,11 +62,16 @@ fun AddLocationSheet(
 
     LaunchedEffect(Unit) {
         viewModel.resetState()
+        viewModel.uiState.collect { state ->
+            if (state.isSaved) {
+                onDismiss()
+            }
+        }
     }
 
-    LaunchedEffect(uiState.isSaved) {
+    LaunchedEffect(uiState.searchResults) {
-        if (uiState.isSaved) {
+        if (uiState.searchResults.isNotEmpty()) {
-            onDismiss()
+            focusManager.clearFocus()
         }
     }
 
@@ -88,6 +95,7 @@ fun AddLocationSheet(
             // Use my location button
             OutlinedButton(
                 onClick = {
+                    focusManager.clearFocus()
                     locationPermissionLauncher.launch(
                         arrayOf(
                             Manifest.permission.ACCESS_FINE_LOCATION,
@@ -145,7 +153,10 @@ fun AddLocationSheet(
                     Row(
                         modifier = Modifier
                             .fillMaxWidth()
-                            .clickable { viewModel.selectSearchResult(result) }
+                            .clickable {
+                                focusManager.clearFocus()
+                                viewModel.selectSearchResult(result)
+                            }
                             .padding(vertical = 12.dp),
                         verticalAlignment = Alignment.CenterVertically
                     ) {

app/src/main/java/com/sunzones/ui/main/MainScreen.kt

@@ -31,12 +31,14 @@ import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import com.sunzones.R
 import com.sunzones.ui.addlocation.AddLocationSheet
+import com.sunzones.ui.main.animation.getTimeGradient
+import com.sunzones.ui.main.animation.lerpGradient
 import com.sunzones.ui.main.components.PageIndicator
 import com.sunzones.ui.main.components.SunCard
 import com.sunzones.ui.theme.NightBottom
 import com.sunzones.ui.theme.NightTop
-import com.sunzones.ui.theme.TextOnDark
 import com.sunzones.ui.theme.TextOnDarkSecondary
+import kotlin.math.absoluteValue
 
 @Composable
 fun MainScreen(
@@ -76,10 +78,39 @@ fun MainScreen(
                 modifier = Modifier.fillMaxSize()
             ) { page ->
                 val location = uiState.locations[page]
+
+                // Compute page offset for parallax
+                val pageOffset = ((pagerState.currentPage - page) +
+                        pagerState.currentPageOffsetFraction)
+
+                // Compute blended gradient for crossfade
+                val currentGradient = getTimeGradient(location.sunProgress, location.isDaytime)
+                val blendedGradient = if (pageOffset.absoluteValue > 0.001f) {
+                    val adjacentPage = if (pageOffset > 0) {
+                        (page - 1).coerceAtLeast(0)
+                    } else {
+                        (page + 1).coerceAtMost(uiState.locations.size - 1)
+                    }
+                    val adjacentLocation = uiState.locations[adjacentPage]
+                    val adjacentGradient = getTimeGradient(
+                        adjacentLocation.sunProgress,
+                        adjacentLocation.isDaytime
+                    )
+                    lerpGradient(
+                        currentGradient,
+                        adjacentGradient,
+                        pageOffset.absoluteValue.coerceAtMost(1f)
+                    )
+                } else {
+                    currentGradient
+                }
+
                 SunCard(
                     location = location,
                     onDelete = { viewModel.deleteLocation(location.id) },
-                    monthlyDaylight = uiState.yearlyDaylight[location.id]
+                    monthlyDaylight = uiState.yearlyDaylight[location.id],
+                    gradientColors = blendedGradient,
+                    pageOffset = pageOffset
                 )
             }
 

app/src/main/java/com/sunzones/ui/main/animation/AnimationUtils.kt

@@ -0,0 +1,56 @@
+package com.sunzones.ui.main.animation
+
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.lerp
+import com.sunzones.ui.theme.*
+import kotlin.math.cos
+import kotlin.math.sin
+
+/**
+ * Per-color lerp between two gradient color lists.
+ */
+fun lerpGradient(gradientA: List<Color>, gradientB: List<Color>, fraction: Float): List<Color> {
+    val clampedFraction = fraction.coerceIn(0f, 1f)
+    return gradientA.indices.map { i ->
+        lerp(gradientA[i], gradientB.getOrElse(i) { gradientA[i] }, clampedFraction)
+    }
+}
+
+/**
+ * Subtle HSV shift for ambient sky animation.
+ * Shifts hue by +/-3 degrees and saturation by +/-3% based on phase (0..1).
+ */
+fun shiftColorSubtle(color: Color, phase: Float): Color {
+    val hsv = FloatArray(3)
+    android.graphics.Color.colorToHSV(
+        android.graphics.Color.argb(
+            (color.alpha * 255).toInt(),
+            (color.red * 255).toInt(),
+            (color.green * 255).toInt(),
+            (color.blue * 255).toInt()
+        ),
+        hsv
+    )
+    val twoPiPhase = phase * 2f * Math.PI.toFloat()
+    hsv[0] = (hsv[0] + 3f * sin(twoPiPhase)) % 360f
+    if (hsv[0] < 0f) hsv[0] += 360f
+    hsv[1] = (hsv[1] + 0.03f * cos(twoPiPhase)).coerceIn(0f, 1f)
+    val argb = android.graphics.Color.HSVToColor(hsv)
+    return Color(argb).copy(alpha = color.alpha)
+}
+
+/**
+ * Returns gradient colors for the given sun progress and daytime state.
+ */
+fun getTimeGradient(sunProgress: Float, isDaytime: Boolean): List<Color> {
+    if (!isDaytime) return listOf(NightTop, NightBottom)
+
+    return when {
+        sunProgress < 0.1f -> listOf(SunriseTop, SunriseBottom)
+        sunProgress < 0.3f -> listOf(MorningTop, MorningBottom)
+        sunProgress < 0.7f -> listOf(MiddayTop, MiddayBottom)
+        sunProgress < 0.85f -> listOf(AfternoonTop, AfternoonBottom)
+        sunProgress < 0.95f -> listOf(SunsetTop, SunsetBottom)
+        else -> listOf(TwilightTop, TwilightBottom)
+    }
+}

app/src/main/java/com/sunzones/ui/main/components/SunArc.kt

@@ -1,8 +1,14 @@
 package com.sunzones.ui.main.components
 
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.RepeatMode
 import androidx.compose.animation.core.Spring
+import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.infiniteRepeatable
+import androidx.compose.animation.core.rememberInfiniteTransition
 import androidx.compose.animation.core.spring
+import androidx.compose.animation.core.tween
 import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
@@ -13,7 +19,6 @@ import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.geometry.Rect
 import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.Path
 import androidx.compose.ui.graphics.StrokeCap
 import androidx.compose.ui.graphics.drawscope.DrawScope
 import androidx.compose.ui.graphics.drawscope.Stroke
@@ -33,10 +38,11 @@ fun SunArc(
     progress: Float,
     isDaytime: Boolean,
     nightProgress: Float = 0f,
+    entranceProgress: Float = 1f,
     modifier: Modifier = Modifier
 ) {
     val animatedProgress by animateFloatAsState(
-        targetValue = progress,
+        targetValue = progress * entranceProgress,
         animationSpec = spring(
             dampingRatio = Spring.DampingRatioMediumBouncy,
             stiffness = Spring.StiffnessLow
@@ -45,7 +51,7 @@ fun SunArc(
     )
 
     val animatedNightProgress by animateFloatAsState(
-        targetValue = nightProgress,
+        targetValue = nightProgress * entranceProgress,
         animationSpec = spring(
             dampingRatio = Spring.DampingRatioMediumBouncy,
             stiffness = Spring.StiffnessLow
@@ -53,6 +59,27 @@ fun SunArc(
         label = "night_progress"
     )
 
+    // Glow pulse animations
+    val glowTransition = rememberInfiniteTransition(label = "glow_pulse")
+    val sunPulseScale by glowTransition.animateFloat(
+        initialValue = 1.0f,
+        targetValue = 1.15f,
+        animationSpec = infiniteRepeatable(
+            animation = tween(durationMillis = 2500, easing = FastOutSlowInEasing),
+            repeatMode = RepeatMode.Reverse
+        ),
+        label = "sun_pulse"
+    )
+    val moonPulseScale by glowTransition.animateFloat(
+        initialValue = 1.0f,
+        targetValue = 1.10f,
+        animationSpec = infiniteRepeatable(
+            animation = tween(durationMillis = 3500, easing = FastOutSlowInEasing),
+            repeatMode = RepeatMode.Reverse
+        ),
+        label = "moon_pulse"
+    )
+
     Canvas(
         modifier = modifier
             .fillMaxWidth()
@@ -112,7 +139,7 @@ fun SunArc(
             val ry = arcHeight
             val sunX = centerX + (rx * cos(angle)).toFloat()
             val sunY = baseY - (ry * sin(angle)).toFloat()
-            drawSunGlow(sunX, sunY)
+            drawSunGlow(sunX, sunY, sunPulseScale)
         } else if (!isDaytime && animatedNightProgress > 0f) {
             // Progress arc (silver) — nighttime
             drawArc(
@@ -135,12 +162,12 @@ fun SunArc(
             val ry = arcHeight
             val moonX = centerX + (rx * cos(angle)).toFloat()
             val moonY = baseY - (ry * sin(angle)).toFloat()
-            drawMoonGlow(moonX, moonY)
+            drawMoonGlow(moonX, moonY, moonPulseScale)
         }
     }
 }
 
-private fun DrawScope.drawSunGlow(x: Float, y: Float) {
+private fun DrawScope.drawSunGlow(x: Float, y: Float, pulseScale: Float) {
     val glowLayers = listOf(
         24.dp.toPx() to 0.05f,
         18.dp.toPx() to 0.08f,
@@ -150,8 +177,8 @@ private fun DrawScope.drawSunGlow(x: Float, y: Float) {
 
     for ((radius, alpha) in glowLayers) {
         drawCircle(
-            color = SunGold.copy(alpha = alpha),
+            color = SunGold.copy(alpha = alpha / pulseScale),
-            radius = radius,
+            radius = radius * pulseScale,
             center = Offset(x, y)
         )
     }
@@ -167,7 +194,7 @@ private fun DrawScope.drawSunGlow(x: Float, y: Float) {
     )
 }
 
-private fun DrawScope.drawMoonGlow(x: Float, y: Float) {
+private fun DrawScope.drawMoonGlow(x: Float, y: Float, pulseScale: Float) {
     val glowLayers = listOf(
         18.dp.toPx() to 0.04f,
         12.dp.toPx() to 0.08f,
@@ -176,8 +203,8 @@ private fun DrawScope.drawMoonGlow(x: Float, y: Float) {
 
     for ((radius, alpha) in glowLayers) {
         drawCircle(
-            color = MoonSilver.copy(alpha = alpha),
+            color = MoonSilver.copy(alpha = alpha / pulseScale),
-            radius = radius,
+            radius = radius * pulseScale,
             center = Offset(x, y)
         )
     }

app/src/main/java/com/sunzones/ui/main/components/SunCard.kt

@@ -2,6 +2,9 @@ package com.sunzones.ui.main.components
 
 import android.content.Intent
 import android.net.Uri
+import androidx.compose.animation.core.Animatable
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.LinearEasing
 import androidx.compose.animation.core.RepeatMode
 import androidx.compose.animation.core.animateFloat
 import androidx.compose.animation.core.infiniteRepeatable
@@ -42,6 +45,7 @@ import androidx.compose.material3.TextButton
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -52,7 +56,9 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.IntOffset
@@ -60,8 +66,15 @@ import androidx.compose.ui.unit.dp
 import com.sunzones.R
 import com.sunzones.domain.model.MonthDaylight
 import com.sunzones.domain.model.SunLocation
+import com.sunzones.ui.main.animation.lerpGradient
+import com.sunzones.ui.main.animation.shiftColorSubtle
 import com.sunzones.ui.theme.*
 import java.time.format.DateTimeFormatter
+import kotlin.math.PI
+import kotlin.math.absoluteValue
+import kotlin.math.cos
+import kotlin.math.sin
+import androidx.compose.ui.util.lerp
 
 private val timeFormatter = DateTimeFormatter.ofPattern("HH:mm")
 
@@ -71,12 +84,13 @@ fun SunCard(
     location: SunLocation,
     onDelete: () -> Unit,
     monthlyDaylight: List<MonthDaylight>?,
+    gradientColors: List<Color> = listOf(NightTop, NightBottom),
+    pageOffset: Float = 0f,
     modifier: Modifier = Modifier
 ) {
     var showDeleteDialog by remember { mutableStateOf(false) }
     var showAboutDialog by remember { mutableStateOf(false) }
 
-    val gradientColors = getTimeGradient(location.sunProgress, location.isDaytime)
     val scrollState = rememberScrollState()
 
     val chevronAlpha by remember {
@@ -85,12 +99,62 @@ fun SunCard(
         }
     }
 
+    // Step 5: Entrance animation
+    val entranceProgress = remember { Animatable(0f) }
+    LaunchedEffect(Unit) {
+        entranceProgress.animateTo(
+            targetValue = 1f,
+            animationSpec = tween(durationMillis = 1200, easing = FastOutSlowInEasing)
+        )
+    }
+    val entrance = entranceProgress.value
+
+    // Step 4: Living sky ambient
+    val ambientTransition = rememberInfiniteTransition(label = "ambient")
+    val ambientPhase by ambientTransition.animateFloat(
+        initialValue = 0f,
+        targetValue = 1f,
+        animationSpec = infiniteRepeatable(
+            animation = tween(durationMillis = 12000, easing = LinearEasing),
+            repeatMode = RepeatMode.Restart
+        ),
+        label = "ambient_phase"
+    )
+
+    // Apply ambient shift to gradient colors
+    val ambientGradient = remember(gradientColors, ambientPhase) {
+        gradientColors.map { shiftColorSubtle(it, ambientPhase) }
+    }
+
+    // Entrance: blend from night to actual gradient
+    val nightGradient = listOf(NightTop, NightBottom)
+    val displayGradient = if (entrance < 1f) {
+        lerpGradient(nightGradient, ambientGradient, entrance)
+    } else {
+        ambientGradient
+    }
+
+    // Step 6: Particle state
+    val isSunriseWindow = location.isDaytime && location.sunProgress < 0.08f
+    val isSunsetWindow = location.isDaytime && location.sunProgress > 0.92f
+    val particleActive = isSunriseWindow || isSunsetWindow
+
+    // Page transition: scale + fade (replaces parallax translationX)
+    val scale = lerp(0.92f, 1f, 1f - pageOffset.absoluteValue.coerceAtMost(1f))
+    val pageFade = lerp(0.6f, 1f, 1f - pageOffset.absoluteValue.coerceAtMost(1f))
+
     BoxWithConstraints(
         modifier = modifier
             .fillMaxSize()
-            .background(brush = Brush.verticalGradient(gradientColors))
+            .graphicsLayer {
+                scaleX = scale
+                scaleY = scale
+                alpha = pageFade
+            }
+            .background(brush = Brush.verticalGradient(displayGradient))
     ) {
         val pageHeight = maxHeight
+        val maxWidthPx = with(LocalDensity.current) { maxWidth.toPx() }
 
         Column(
             modifier = Modifier
@@ -114,10 +178,17 @@ fun SunCard(
                     horizontalAlignment = Alignment.CenterHorizontally,
                     verticalArrangement = Arrangement.Center
                 ) {
-                    // Location name
+                    // Location name — entrance index 0
+                    val nameAlpha = entranceAlpha(entrance, 0)
+                    val nameDy = entranceTranslationY(entrance, 0)
                     Row(
                         verticalAlignment = Alignment.CenterVertically,
-                        horizontalArrangement = Arrangement.Center
+                        horizontalArrangement = Arrangement.Center,
+                        modifier = Modifier
+                            .graphicsLayer {
+                                alpha = nameAlpha
+                                translationY = nameDy
+                            }
                     ) {
                         if (location.isCurrentLocation) {
                             Icon(
@@ -140,14 +211,20 @@ fun SunCard(
 
                     Spacer(modifier = Modifier.height(32.dp))
 
-                    // Sun/Moon arc with optional moon phase overlay
+                    // Sun/Moon arc — entrance index 1, parallax background layer
                     Box(
-                        contentAlignment = Alignment.Center
+                        contentAlignment = Alignment.Center,
+                        modifier = Modifier
+                            .graphicsLayer {
+                                alpha = entranceAlpha(entrance, 1)
+                                translationY = entranceTranslationY(entrance, 1)
+                            }
                     ) {
                         SunArc(
                             progress = location.sunProgress,
                             isDaytime = location.isDaytime,
                             nightProgress = location.nightProgress,
+                            entranceProgress = entrance,
                             modifier = Modifier.fillMaxWidth()
                         )
 
@@ -168,11 +245,38 @@ fun SunCard(
                                 )
                             }
                         }
+
+                        // Particle overlay
+                        if (particleActive && entrance >= 1f) {
+                            val arcPadding = with(LocalDensity.current) { 32.dp.toPx() }
+                            val arcWidth = maxWidthPx - with(LocalDensity.current) { 48.dp.toPx() } - arcPadding * 2
+                            val arcHeight = arcWidth / 2
+                            val centerX = (maxWidthPx - with(LocalDensity.current) { 48.dp.toPx() }) / 2
+                            val arcBaseY = with(LocalDensity.current) { 180.dp.toPx() } - with(LocalDensity.current) { 20.dp.toPx() }
+                            val angle = PI - (location.sunProgress * PI)
+                            val sunX = centerX + (arcWidth / 2 * cos(angle)).toFloat()
+                            val sunY = arcBaseY - (arcHeight * sin(angle)).toFloat()
+
+                            SunsetParticles(
+                                active = true,
+                                isSunrise = isSunriseWindow,
+                                emitX = sunX,
+                                emitY = sunY
+                            )
+                        }
                     }
 
                     Spacer(modifier = Modifier.height(32.dp))
 
-                    // Hero element — day length or night length
+                    // Hero element — entrance index 2
+                    Column(
+                        horizontalAlignment = Alignment.CenterHorizontally,
+                        modifier = Modifier
+                            .graphicsLayer {
+                                alpha = entranceAlpha(entrance, 2)
+                                translationY = entranceTranslationY(entrance, 2)
+                            }
+                    ) {
                         if (location.isDaytime) {
                             Text(
                                 text = location.dayLengthFormatted,
@@ -206,12 +310,18 @@ fun SunCard(
                                 )
                             }
                         }
+                    }
 
                     Spacer(modifier = Modifier.height(24.dp))
 
-                    // Sunrise / Sunset times
+                    // Sunrise / Sunset times — entrance index 3
                     Row(
-                        modifier = Modifier.fillMaxWidth(),
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .graphicsLayer {
+                                alpha = entranceAlpha(entrance, 3)
+                                translationY = entranceTranslationY(entrance, 3)
+                            },
                         horizontalArrangement = Arrangement.SpaceEvenly
                     ) {
                         // Sunrise
@@ -389,31 +499,35 @@ fun SunCard(
     }
 }
 
-private fun getTimeGradient(sunProgress: Float, isDaytime: Boolean): List<Color> {
+/**
-    if (!isDaytime) return listOf(NightTop, NightBottom)
+ * Staggered entrance alpha for element at given index.
-
+ */
-    return when {
+private fun entranceAlpha(progress: Float, index: Int): Float {
-        sunProgress < 0.1f -> listOf(SunriseTop, SunriseBottom)
+    val stagger = index * 0.08f
-        sunProgress < 0.3f -> listOf(MorningTop, MorningBottom)
+    return ((progress - stagger) / (1f - stagger)).coerceIn(0f, 1f)
-        sunProgress < 0.7f -> listOf(MiddayTop, MiddayBottom)
-        sunProgress < 0.85f -> listOf(AfternoonTop, AfternoonBottom)
-        sunProgress < 0.95f -> listOf(SunsetTop, SunsetBottom)
-        else -> listOf(TwilightTop, TwilightBottom)
 }
+
+/**
+ * Staggered entrance vertical translation for element at given index.
+ * Returns pixels to offset (20dp equivalent fading upward).
+ */
+private fun entranceTranslationY(progress: Float, index: Int): Float {
+    val alpha = entranceAlpha(progress, index)
+    return (1f - alpha) * 60f // ~20dp in pixels at mdpi, scales naturally
 }
 
 private fun moonPhaseEmoji(degrees: Double): String {
     // degrees: -180..180 where 0=new moon, 90=first quarter, 180/-180=full, -90=last quarter
     val normalized = ((degrees % 360) + 360) % 360 // normalize to 0..360
     return when {
-        normalized < 22.5 -> "\uD83C\uDF11"   // 🌑 New moon
+        normalized < 22.5 -> "\uD83C\uDF11"   // New moon
-        normalized < 67.5 -> "\uD83C\uDF12"   // 🌒 Waxing crescent
+        normalized < 67.5 -> "\uD83C\uDF12"   // Waxing crescent
-        normalized < 112.5 -> "\uD83C\uDF13"  // 🌓 First quarter
+        normalized < 112.5 -> "\uD83C\uDF13"  // First quarter
-        normalized < 157.5 -> "\uD83C\uDF14"  // 🌔 Waxing gibbous
+        normalized < 157.5 -> "\uD83C\uDF14"  // Waxing gibbous
-        normalized < 202.5 -> "\uD83C\uDF15"  // 🌕 Full moon
+        normalized < 202.5 -> "\uD83C\uDF15"  // Full moon
-        normalized < 247.5 -> "\uD83C\uDF16"  // 🌖 Waning gibbous
+        normalized < 247.5 -> "\uD83C\uDF16"  // Waning gibbous
-        normalized < 292.5 -> "\uD83C\uDF17"  // 🌗 Last quarter
+        normalized < 292.5 -> "\uD83C\uDF17"  // Last quarter
-        normalized < 337.5 -> "\uD83C\uDF18"  // 🌘 Waning crescent
+        normalized < 337.5 -> "\uD83C\uDF18"  // Waning crescent
-        else -> "\uD83C\uDF11"                 // 🌑 New moon
+        else -> "\uD83C\uDF11"                 // New moon
     }
 }

app/src/main/java/com/sunzones/ui/main/components/SunsetParticles.kt

@@ -0,0 +1,123 @@
+package com.sunzones.ui.main.components
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import com.sunzones.ui.theme.SunGlow
+import com.sunzones.ui.theme.SunGold
+import com.sunzones.ui.theme.SunOrange
+import com.sunzones.ui.theme.SunriseParticle
+import com.sunzones.ui.theme.SunsetParticle1
+import com.sunzones.ui.theme.SunsetParticle2
+import com.sunzones.ui.theme.SunsetParticle3
+import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlin.math.cos
+import kotlin.math.sin
+import kotlin.random.Random
+
+private data class Particle(
+    var x: Float,
+    var y: Float,
+    var vx: Float,
+    var vy: Float,
+    var alpha: Float,
+    var scale: Float,
+    var life: Float, // 0..1, decreasing
+    val color: Color
+)
+
+@Composable
+fun SunsetParticles(
+    active: Boolean,
+    isSunrise: Boolean,
+    emitX: Float,
+    emitY: Float,
+    modifier: Modifier = Modifier
+) {
+    val particles = remember { mutableStateListOf<Particle>() }
+
+    val palette = if (isSunrise) {
+        listOf(SunGold, SunOrange, SunGlow, SunriseParticle)
+    } else {
+        listOf(SunOrange, SunsetParticle1, SunsetParticle2, SunsetParticle3)
+    }
+
+    LaunchedEffect(active, emitX, emitY) {
+        if (!active) {
+            particles.clear()
+            return@LaunchedEffect
+        }
+
+        // Emit burst of 24 particles
+        particles.clear()
+        repeat(24) {
+            val angle = Random.nextFloat() * 2f * Math.PI.toFloat()
+            val speed = 40f + Random.nextFloat() * 80f
+            particles.add(
+                Particle(
+                    x = emitX + (Random.nextFloat() - 0.5f) * 8f,
+                    y = emitY + (Random.nextFloat() - 0.5f) * 8f,
+                    vx = cos(angle) * speed,
+                    vy = -sin(angle).coerceAtLeast(0.1f) * speed * 0.8f,
+                    alpha = 0.7f + Random.nextFloat() * 0.3f,
+                    scale = 0.5f + Random.nextFloat() * 0.5f,
+                    life = 1f,
+                    color = palette[Random.nextInt(palette.size)]
+                )
+            )
+        }
+
+        var lastTime = System.nanoTime()
+        while (isActive && particles.isNotEmpty()) {
+            delay(16L)
+            val now = System.nanoTime()
+            val dt = ((now - lastTime) / 1_000_000_000f).coerceAtMost(0.05f)
+            lastTime = now
+
+            val iterator = particles.listIterator()
+            while (iterator.hasNext()) {
+                val p = iterator.next()
+                p.x += p.vx * dt
+                p.y += p.vy * dt
+                p.vy += 60f * dt // gravity
+                p.life -= dt * 0.8f
+                p.alpha = (p.life * 0.8f).coerceIn(0f, 1f)
+                p.scale *= (1f - dt * 0.5f)
+                if (p.life <= 0f) {
+                    iterator.remove()
+                } else {
+                    iterator.set(p.copy())
+                }
+            }
+        }
+    }
+
+    Canvas(modifier = modifier.fillMaxSize()) {
+        for (p in particles) {
+            val radius = 4f * p.scale
+            if (radius > 0.5f && p.alpha > 0.01f) {
+                drawCircle(
+                    brush = Brush.radialGradient(
+                        colors = listOf(
+                            p.color.copy(alpha = p.alpha),
+                            p.color.copy(alpha = p.alpha * 0.3f)
+                        ),
+                        center = Offset(p.x, p.y),
+                        radius = radius * 2f
+                    ),
+                    radius = radius * 2f,
+                    center = Offset(p.x, p.y)
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/sunzones/ui/theme/Color.kt

@@ -52,6 +52,12 @@ val MoonSilver = Color(0xFFE0E0E0)
 val MoonGlow = Color(0xFFF5F5F5)
 val MoonBlue = Color(0xFFB0BEC5)
 
+// Particle colors
+val SunriseParticle = Color(0xFFFFE082)
+val SunsetParticle1 = Color(0xFFE65100)
+val SunsetParticle2 = Color(0xFF7B1FA2)
+val SunsetParticle3 = Color(0xFFFF7043)
+
 // Material 3 light colors
 val PrimaryLight = Color(0xFF1565C0)
 val OnPrimaryLight = Color(0xFFFFFFFF)