refactor(player): replace side sliders with centered adjustment indicators

- Replace the horizontal `PlayerSideSliders` with a new vertical `PlayerAdjustmentIndicator` for brightness and volume, displaying it in the center of the screen.
- Create `PlayerAdjustmentIndicator.kt`, a new composable that shows an icon, a vertical progress bar, and a percentage value within a semi-transparent black background.
- Update `PlayerScreen` to use the new centered indicator instead of the old side-aligned sliders when brightness or volume is adjusted via gestures.
- Pass a `modifier` to `ValueChangeTimedVisibility` to correctly position the new indicators.
- Change the background color of the "Seek to" toast message from a theme surface color to semi-transparent black for better consistency.

app/src/main/java/hu/bbara/purefin/common/ui/components/TimedVisibility.kt

@@ -9,6 +9,7 @@ import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
 import kotlinx.coroutines.delay
 
 /**
@@ -25,7 +26,8 @@ import kotlinx.coroutines.delay
 fun <T> EmptyValueTimedVisibility(
     value: T?,
     hideAfterMillis: Long = 1_000,
-    content: @Composable (T) -> Unit,
+    modifier: Modifier = Modifier,
+    content: @Composable (T) -> Unit
 ) {
     val shownValue = remember { mutableStateOf<T?>(null) }
 
@@ -55,7 +57,8 @@ fun <T> EmptyValueTimedVisibility(
 fun <T> ValueChangeTimedVisibility(
     value: T,
     hideAfterMillis: Long = 1_000,
-    content: @Composable (T) -> Unit,
+    modifier: Modifier = Modifier,
+    content: @Composable (T) -> Unit
 ) {
     var displayedValue by remember { mutableStateOf(value) }
     var isVisible by remember { mutableStateOf(false) }
@@ -75,6 +78,7 @@ fun <T> ValueChangeTimedVisibility(
 
     AnimatedVisibility(
         visible = isVisible,
+        modifier = modifier,
         enter = EnterTransition.None,
         exit = ExitTransition.None
     ) {

app/src/main/java/hu/bbara/purefin/player/ui/PlayerScreen.kt

@@ -15,6 +15,9 @@ import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.BrightnessMedium
+import androidx.compose.material.icons.outlined.VolumeUp
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
@@ -27,6 +30,7 @@ import androidx.compose.runtime.setValue
 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.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.viewinterop.AndroidView
@@ -35,12 +39,12 @@ import androidx.media3.ui.AspectRatioFrameLayout
 import androidx.media3.ui.PlayerView
 import hu.bbara.purefin.common.ui.components.EmptyValueTimedVisibility
 import hu.bbara.purefin.common.ui.components.ValueChangeTimedVisibility
+import hu.bbara.purefin.player.ui.components.PlayerAdjustmentIndicator
 import hu.bbara.purefin.player.ui.components.PlayerControlsOverlay
 import hu.bbara.purefin.player.ui.components.PlayerGesturesLayer
 import hu.bbara.purefin.player.ui.components.PlayerLoadingErrorEndCard
 import hu.bbara.purefin.player.ui.components.PlayerQueuePanel
 import hu.bbara.purefin.player.ui.components.PlayerSettingsSheet
-import hu.bbara.purefin.player.ui.components.PlayerSideSliders
 import hu.bbara.purefin.player.viewmodel.PlayerViewModel
 import kotlin.math.abs
 import kotlin.math.roundToInt
@@ -135,27 +139,33 @@ fun PlayerScreen(
 
         ValueChangeTimedVisibility(
             value = brightness,
-            hideAfterMillis = 800
+            hideAfterMillis = 800,
+            modifier = Modifier
+                .align(Alignment.CenterStart)
+                .padding(start = 20.dp)
         ) { currentBrightness ->
-            PlayerSideSliders(
-                modifier = Modifier.fillMaxSize(),
-                brightness = currentBrightness,
-                volume = volume,
-                showBrightness = true,
-                showVolume = false,
+            PlayerAdjustmentIndicator(
+                modifier = Modifier
+                    .align(Alignment.Center),
+                icon = Icons.Outlined.BrightnessMedium,
+                contentDescription = "Brightness",
+                value = currentBrightness
             )
         }
 
         ValueChangeTimedVisibility(
             value = volume,
-            hideAfterMillis = 800
+            hideAfterMillis = 800,
+            modifier = Modifier
+                .align(Alignment.CenterEnd)
+                .padding(end = 20.dp)
         ) { currentVolume ->
-            PlayerSideSliders(
-                modifier = Modifier.fillMaxSize(),
-                brightness = brightness,
-                volume = currentVolume,
-                showBrightness = false,
-                showVolume = true,
+            PlayerAdjustmentIndicator(
+                modifier = Modifier
+                    .align(Alignment.Center),
+                icon = Icons.Outlined.VolumeUp,
+                contentDescription = "Volume",
+                value = currentVolume
             )
         }
 
@@ -235,7 +245,7 @@ private fun SeekAmountIndicator(deltaMs: Long, modifier: Modifier = Modifier) {
     Box(
         modifier = modifier
             .clip(RoundedCornerShape(16.dp))
-            .background(scheme.surface.copy(alpha = 0.9f))
+            .background(Color.Black.copy(alpha = 0.9f))
             .padding(horizontal = 20.dp, vertical = 12.dp)
     ) {
         Text(

app/src/main/java/hu/bbara/purefin/player/ui/components/PlayerAdjustmentIndicator.kt

@@ -0,0 +1,76 @@
+package hu.bbara.purefin.player.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.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+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.unit.Dp
+import androidx.compose.ui.unit.dp
+import kotlin.math.roundToInt
+
+@Composable
+fun PlayerAdjustmentIndicator(
+    modifier: Modifier = Modifier,
+    icon: ImageVector,
+    contentDescription: String?,
+    value: Float,
+    sliderHeight: Dp = 140.dp,
+) {
+    val scheme = MaterialTheme.colorScheme
+    val percent = (value.coerceIn(0f, 1f) * 100).roundToInt()
+    val clamped = value.coerceIn(0f, 1f)
+
+    Box(
+        modifier = modifier
+            .clip(RoundedCornerShape(16.dp))
+            .background(Color.Black.copy(alpha = 0.5f))
+            .padding(horizontal = 20.dp, vertical = 16.dp),
+        contentAlignment = Alignment.Center
+    ) {
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Icon(
+                imageVector = icon,
+                contentDescription = contentDescription,
+                tint = scheme.onSurface
+            )
+            Spacer(modifier = Modifier.height(16.dp))
+            Box(
+                modifier = Modifier
+                    .width(10.dp)
+                    .height(sliderHeight)
+                    .clip(RoundedCornerShape(5.dp))
+                    .background(scheme.onSurface.copy(alpha = 0.2f))
+            ) {
+                Box(
+                    modifier = Modifier
+                        .align(Alignment.BottomCenter)
+                        .width(10.dp)
+                        .height(sliderHeight * clamped)
+                        .clip(RoundedCornerShape(5.dp))
+                        .background(scheme.primary)
+                )
+            }
+            Spacer(modifier = Modifier.height(16.dp))
+            Text(
+                text = "$percent%",
+                color = scheme.onSurface,
+                style = MaterialTheme.typography.titleMedium
+            )
+        }
+    }
+}

app/src/main/java/hu/bbara/purefin/player/ui/components/PlayerSideSliders.kt

@@ -1,84 +0,0 @@
-package hu.bbara.purefin.player.ui.components
-
-import androidx.compose.foundation.background
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.fillMaxHeight
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.wrapContentHeight
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.outlined.BrightnessMedium
-import androidx.compose.material.icons.outlined.VolumeUp
-import androidx.compose.material3.Icon
-import androidx.compose.material3.LinearProgressIndicator
-import androidx.compose.material3.MaterialTheme
-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.unit.dp
-
-@Composable
-fun PlayerSideSliders(
-    modifier: Modifier = Modifier,
-    brightness: Float,
-    volume: Float,
-    showBrightness: Boolean,
-    showVolume: Boolean,
-) {
-    val scheme = MaterialTheme.colorScheme
-
-    Box(modifier = modifier.fillMaxWidth()) {
-        if (showBrightness) {
-            SideOverlay(
-                modifier = Modifier
-                    .align(Alignment.CenterStart)
-                    .padding(start = 16.dp),
-                icon = { Icon(Icons.Outlined.BrightnessMedium, contentDescription = null, tint = scheme.onBackground) },
-                progress = brightness,
-                scheme = scheme
-            )
-        }
-        if (showVolume) {
-            SideOverlay(
-                modifier = Modifier
-                    .align(Alignment.CenterEnd)
-                    .padding(end = 16.dp),
-                icon = { Icon(Icons.Outlined.VolumeUp, contentDescription = null, tint = scheme.onBackground) },
-                progress = volume,
-                scheme = scheme
-            )
-        }
-    }
-}
-
-@Composable
-private fun SideOverlay(
-    modifier: Modifier = Modifier,
-    icon: @Composable () -> Unit,
-    progress: Float,
-    scheme: androidx.compose.material3.ColorScheme
-) {
-    Column(
-        modifier = modifier
-            .fillMaxHeight(0.3f)
-            .wrapContentHeight(align = Alignment.CenterVertically)
-            .clip(RoundedCornerShape(18.dp))
-            .background(scheme.background.copy(alpha = 0.8f))
-            .padding(horizontal = 14.dp, vertical = 12.dp),
-        horizontalAlignment = Alignment.CenterHorizontally
-    ) {
-        icon()
-        LinearProgressIndicator(
-            progress = { progress.coerceIn(0f, 1f) },
-            modifier = Modifier
-                .padding(top = 10.dp)
-                .fillMaxWidth()
-                .clip(RoundedCornerShape(8.dp)),
-            color = scheme.primary,
-            trackColor = scheme.onBackground.copy(alpha = 0.2f)
-        )
-    }
-}