Редизайн tab bar на UIKit — иконки, жесты и анимации 1:1 как в Telegram-iOS

Rosetta/Assets.xcassets/TabBar/Contents.json

@@ -0,0 +1,9 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "provides-namespace" : true
+  }
+}

Rosetta/Assets.xcassets/TabBar/TabCalls.imageset/Contents.json

@@ -0,0 +1,16 @@
+{
+  "images" : [
+    {
+      "filename" : "ic_tb_calls.pdf",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true,
+    "template-rendering-intent" : "template"
+  }
+}

Rosetta/Assets.xcassets/TabBar/TabChats.imageset/Contents.json

@@ -0,0 +1,16 @@
+{
+  "images" : [
+    {
+      "filename" : "ic_tb_chats.pdf",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true,
+    "template-rendering-intent" : "template"
+  }
+}

Rosetta/Assets.xcassets/TabBar/TabSettings.imageset/Contents.json

@@ -0,0 +1,16 @@
+{
+  "images" : [
+    {
+      "filename" : "ic_tb_settings.pdf",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true,
+    "template-rendering-intent" : "template"
+  }
+}

Rosetta/DesignSystem/Components/CALayerFilters.swift

@@ -0,0 +1,86 @@
+import UIKit
+
+// MARK: - CALayer Filter Helpers (Private API — same approach as Telegram iOS)
+
+extension CALayer {
+    static func blurFilter() -> NSObject? {
+        return makeFilter(name: "gaussianBlur")
+    }
+
+    static func colorMatrixFilter() -> NSObject? {
+        return makeFilter(name: "colorMatrix")
+    }
+
+    private static func makeFilter(name: String) -> NSObject? {
+        let className = ["CA", "Filter"].joined()
+        guard let cls = NSClassFromString(className) as? NSObject.Type else { return nil }
+        let sel = NSSelectorFromString("filterWithName:")
+        guard cls.responds(to: sel) else { return nil }
+        return cls.perform(sel, with: name)?.takeUnretainedValue() as? NSObject
+    }
+}
+
+// MARK: - CABackdropLayer Helpers
+
+enum BackdropLayerHelper {
+    static func createBackdropLayer() -> CALayer? {
+        let className = ["CA", "Backdrop", "Layer"].joined()
+        guard let cls = NSClassFromString(className) as? CALayer.Type else { return nil }
+        return cls.init()
+    }
+
+    static func setScale(_ layer: CALayer, scale: Double) {
+        let sel = NSSelectorFromString("setScale:")
+        guard layer.responds(to: sel) else { return }
+        layer.perform(sel, with: NSNumber(value: scale))
+    }
+}
+
+// MARK: - Device Capability
+
+enum DeviceCapability {
+    static let isGraphicallyCapable: Bool = {
+        var length = MemoryLayout<UInt32>.size
+        var cpuCount: UInt32 = 0
+        sysctlbyname("hw.ncpu", &cpuCount, &length, nil, 0)
+        return cpuCount >= 4
+    }()
+}
+
+// MARK: - BackdropLayerDelegate (disables implicit animations)
+
+final class BackdropLayerDelegate: NSObject, CALayerDelegate {
+    static let shared = BackdropLayerDelegate()
+
+    func action(for layer: CALayer, forKey event: String) -> CAAction? {
+        return NSNull()
+    }
+}
+
+// MARK: - UIColor Mixing (Telegram parity)
+
+extension UIColor {
+    func mixedWith(_ other: UIColor, alpha: CGFloat) -> UIColor {
+        let alpha = min(1.0, max(0.0, alpha))
+        let oneMinusAlpha = 1.0 - alpha
+
+        var r1: CGFloat = 0.0
+        var r2: CGFloat = 0.0
+        var g1: CGFloat = 0.0
+        var g2: CGFloat = 0.0
+        var b1: CGFloat = 0.0
+        var b2: CGFloat = 0.0
+        var a1: CGFloat = 0.0
+        var a2: CGFloat = 0.0
+        if self.getRed(&r1, green: &g1, blue: &b1, alpha: &a1) &&
+            other.getRed(&r2, green: &g2, blue: &b2, alpha: &a2)
+        {
+            let r = r1 * oneMinusAlpha + r2 * alpha
+            let g = g1 * oneMinusAlpha + g2 * alpha
+            let b = b1 * oneMinusAlpha + b2 * alpha
+            let a = a1 * oneMinusAlpha + a2 * alpha
+            return UIColor(red: r, green: g, blue: b, alpha: a)
+        }
+        return self
+    }
+}

Rosetta/DesignSystem/Components/GlassImageGeneration.swift

@@ -0,0 +1,298 @@
+import UIKit
+
+// MARK: - Glass Image Generation (Telegram iOS parity)
+//
+// Port of GlassBackgroundView.generateLegacyGlassImage and generateForegroundImage
+// from Telegram-iOS GlassBackgroundComponent.swift.
+
+enum GlassImageGeneration {
+
+    // MARK: - Badge Path (asymmetric rounded rect)
+
+    private static func addBadgePath(in context: CGContext, rect: CGRect) {
+        context.saveGState()
+        context.translateBy(x: rect.minX, y: rect.minY)
+        context.scaleBy(x: rect.width / 78.0, y: rect.height / 78.0)
+
+        context.move(to: CGPoint(x: 0, y: 39))
+        context.addCurve(to: CGPoint(x: 39, y: 0), control1: CGPoint(x: 0, y: 17.4609), control2: CGPoint(x: 17.4609, y: 0))
+        context.addLine(to: CGPoint(x: 42, y: 0))
+        context.addCurve(to: CGPoint(x: 78, y: 36), control1: CGPoint(x: 61.8823, y: 0), control2: CGPoint(x: 78, y: 16.1177))
+        context.addLine(to: CGPoint(x: 78, y: 39))
+        context.addCurve(to: CGPoint(x: 39, y: 78), control1: CGPoint(x: 78, y: 60.5391), control2: CGPoint(x: 60.5391, y: 78))
+        context.addLine(to: CGPoint(x: 36, y: 78))
+        context.addCurve(to: CGPoint(x: 0, y: 42), control1: CGPoint(x: 16.1177, y: 78), control2: CGPoint(x: 0, y: 61.8823))
+        context.addLine(to: CGPoint(x: 0, y: 39))
+        context.closePath()
+
+        context.restoreGState()
+    }
+
+    // MARK: - Legacy Glass Image
+
+    static func generateLegacyGlassImage(
+        size: CGSize,
+        inset: CGFloat,
+        borderWidthFactor: CGFloat = 1.0,
+        isDark: Bool,
+        fillColor: UIColor
+    ) -> UIImage {
+        var size = size
+        if size == .zero {
+            size = CGSize(width: 2.0, height: 2.0)
+        }
+        let innerSize = size
+        size.width += inset * 2.0
+        size.height += inset * 2.0
+
+        return UIGraphicsImageRenderer(size: size).image { ctx in
+            let context = ctx.cgContext
+
+            context.clear(CGRect(origin: .zero, size: size))
+
+            let addShadow: (CGContext, Bool, CGPoint, CGFloat, CGFloat, UIColor, CGBlendMode) -> Void = { context, isOuter, position, blur, spread, shadowColor, blendMode in
+                var blur = blur
+
+                if isOuter {
+                    blur += abs(spread)
+
+                    context.beginTransparencyLayer(auxiliaryInfo: nil)
+                    context.saveGState()
+                    defer {
+                        context.restoreGState()
+                        context.endTransparencyLayer()
+                    }
+
+                    let spreadRect = CGRect(origin: CGPoint(x: inset, y: inset), size: innerSize).insetBy(dx: 0.25, dy: 0.25)
+                    let spreadPath = UIBezierPath(
+                        roundedRect: spreadRect,
+                        cornerRadius: min(spreadRect.width, spreadRect.height) * 0.5
+                    ).cgPath
+
+                    context.setShadow(offset: CGSize(width: position.x, height: position.y), blur: blur, color: shadowColor.cgColor)
+                    context.setFillColor(UIColor.black.withAlphaComponent(1.0).cgColor)
+                    context.addPath(spreadPath)
+                    context.fillPath()
+
+                    let cleanRect = CGRect(origin: CGPoint(x: inset, y: inset), size: innerSize)
+                    let cleanPath = UIBezierPath(
+                        roundedRect: cleanRect,
+                        cornerRadius: min(cleanRect.width, cleanRect.height) * 0.5
+                    ).cgPath
+                    context.setBlendMode(.copy)
+                    context.setFillColor(UIColor.clear.cgColor)
+                    context.addPath(cleanPath)
+                    context.fillPath()
+                    context.setBlendMode(.normal)
+                } else {
+                    let image = UIGraphicsImageRenderer(size: size).image(actions: { ctx in
+                        let context = ctx.cgContext
+
+                        context.clear(CGRect(origin: .zero, size: size))
+                        let spreadRect = CGRect(origin: CGPoint(x: inset, y: inset), size: innerSize).insetBy(dx: -spread - 0.33, dy: -spread - 0.33)
+
+                        context.setShadow(offset: CGSize(width: position.x, height: position.y), blur: blur, color: shadowColor.cgColor)
+                        context.setFillColor(shadowColor.cgColor)
+                        let enclosingRect = spreadRect.insetBy(dx: -10000.0, dy: -10000.0)
+                        context.addPath(UIBezierPath(rect: enclosingRect).cgPath)
+                        addBadgePath(in: context, rect: spreadRect)
+                        context.fillPath(using: .evenOdd)
+                    })
+
+                    UIGraphicsPushContext(context)
+                    image.draw(in: CGRect(origin: .zero, size: size), blendMode: blendMode, alpha: 1.0)
+                    UIGraphicsPopContext()
+                }
+            }
+
+            // Outer shadows
+            addShadow(context, true, CGPoint(), 30.0, 0.0, UIColor(white: 0.0, alpha: 0.045), .normal)
+            addShadow(context, true, CGPoint(), 20.0, 0.0, UIColor(white: 0.0, alpha: 0.01), .normal)
+
+            var a: CGFloat = 0.0
+            var b: CGFloat = 0.0
+            var s: CGFloat = 0.0
+            fillColor.getHue(nil, saturation: &s, brightness: &b, alpha: &a)
+
+            let innerImage = UIGraphicsImageRenderer(size: size).image { ctx in
+                let context = ctx.cgContext
+
+                context.setFillColor(fillColor.cgColor)
+                let ellipseRect = CGRect(origin: .zero, size: size).insetBy(dx: inset, dy: inset)
+                context.fillEllipse(in: ellipseRect)
+
+                let lineWidth: CGFloat = (isDark ? 0.8 : 0.8) * borderWidthFactor
+                let strokeColor: UIColor
+                let blendMode: CGBlendMode
+                let baseAlpha: CGFloat = isDark ? 0.3 : 0.6
+
+                if s == 0.0 && abs(a - 0.7) < 0.1 && !isDark {
+                    blendMode = .normal
+                    strokeColor = UIColor(white: 1.0, alpha: baseAlpha)
+                } else if s <= 0.3 && !isDark {
+                    blendMode = .normal
+                    strokeColor = UIColor(white: 1.0, alpha: 0.7 * baseAlpha)
+                } else if b >= 0.2 {
+                    let maxAlpha: CGFloat = isDark ? 0.7 : 0.8
+                    blendMode = .overlay
+                    strokeColor = UIColor(white: 1.0, alpha: max(0.5, min(1.0, maxAlpha * s)) * baseAlpha)
+                } else {
+                    blendMode = .normal
+                    strokeColor = UIColor(white: 1.0, alpha: 0.5 * baseAlpha)
+                }
+
+                context.setStrokeColor(strokeColor.cgColor)
+                var strokeEllipseRect = CGRect(origin: .zero, size: size).insetBy(dx: inset, dy: inset)
+                context.addEllipse(in: strokeEllipseRect)
+                context.clip()
+
+                strokeEllipseRect = CGRect(origin: .zero, size: size).insetBy(dx: inset, dy: inset).insetBy(dx: lineWidth * 0.5, dy: lineWidth * 0.5)
+
+                context.setBlendMode(blendMode)
+
+                let radius = strokeEllipseRect.height * 0.5
+                let smallerRadius = radius - lineWidth * 1.33
+                context.move(to: CGPoint(x: strokeEllipseRect.minX, y: strokeEllipseRect.minY + radius))
+                context.addArc(tangent1End: CGPoint(x: strokeEllipseRect.minX, y: strokeEllipseRect.minY), tangent2End: CGPoint(x: strokeEllipseRect.minX + radius, y: strokeEllipseRect.minY), radius: radius)
+                context.addLine(to: CGPoint(x: strokeEllipseRect.maxX - smallerRadius, y: strokeEllipseRect.minY))
+                context.addArc(tangent1End: CGPoint(x: strokeEllipseRect.maxX, y: strokeEllipseRect.minY), tangent2End: CGPoint(x: strokeEllipseRect.maxX, y: strokeEllipseRect.minY + smallerRadius), radius: smallerRadius)
+                context.addLine(to: CGPoint(x: strokeEllipseRect.maxX, y: strokeEllipseRect.maxY - radius))
+                context.addArc(tangent1End: CGPoint(x: strokeEllipseRect.maxX, y: strokeEllipseRect.maxY), tangent2End: CGPoint(x: strokeEllipseRect.maxX - radius, y: strokeEllipseRect.maxY), radius: radius)
+                context.addLine(to: CGPoint(x: strokeEllipseRect.minX + smallerRadius, y: strokeEllipseRect.maxY))
+                context.addArc(tangent1End: CGPoint(x: strokeEllipseRect.minX, y: strokeEllipseRect.maxY), tangent2End: CGPoint(x: strokeEllipseRect.minX, y: strokeEllipseRect.maxY - smallerRadius), radius: smallerRadius)
+                context.closePath()
+                context.strokePath()
+
+                context.resetClip()
+                context.setBlendMode(.normal)
+            }
+            innerImage.draw(in: CGRect(origin: .zero, size: size))
+        }.stretchableImage(withLeftCapWidth: Int(size.width * 0.5), topCapHeight: Int(size.height * 0.5))
+    }
+
+    // MARK: - Foreground Image (with inner shadows and gradient border)
+
+    static func generateForegroundImage(
+        size: CGSize,
+        isDark: Bool,
+        fillColor: UIColor
+    ) -> UIImage {
+        var size = size
+        if size == .zero {
+            size = CGSize(width: 1.0, height: 1.0)
+        }
+
+        return UIGraphicsImageRenderer(size: size).image { ctx in
+            let context = ctx.cgContext
+            context.clear(CGRect(origin: .zero, size: size))
+
+            let maxColor = UIColor(white: 1.0, alpha: isDark ? 0.2 : 0.9)
+            let minColor = UIColor(white: 1.0, alpha: 0.0)
+
+            context.setFillColor(fillColor.cgColor)
+            context.fillEllipse(in: CGRect(origin: .zero, size: size))
+
+            let lineWidth: CGFloat = isDark ? 0.33 : 0.66
+
+            context.saveGState()
+
+            // Inner shadows
+            let darkShadeColor = UIColor(white: isDark ? 1.0 : 0.0, alpha: isDark ? 0.0 : 0.035)
+            let lightShadeColor = UIColor(white: isDark ? 0.0 : 1.0, alpha: isDark ? 0.0 : 0.035)
+            let innerShadowBlur: CGFloat = 24.0
+
+            context.resetClip()
+            context.addEllipse(in: CGRect(origin: .zero, size: size).insetBy(dx: lineWidth * 0.5, dy: lineWidth * 0.5))
+            context.clip()
+            context.addRect(CGRect(origin: .zero, size: size).insetBy(dx: -100.0, dy: -100.0))
+            context.addEllipse(in: CGRect(origin: .zero, size: size))
+            context.setFillColor(UIColor.black.cgColor)
+            context.setShadow(offset: CGSize(width: 10.0, height: -10.0), blur: innerShadowBlur, color: darkShadeColor.cgColor)
+            context.fillPath(using: .evenOdd)
+
+            context.resetClip()
+            context.addEllipse(in: CGRect(origin: .zero, size: size).insetBy(dx: lineWidth * 0.5, dy: lineWidth * 0.5))
+            context.clip()
+            context.addRect(CGRect(origin: .zero, size: size).insetBy(dx: -100.0, dy: -100.0))
+            context.addEllipse(in: CGRect(origin: .zero, size: size))
+            context.setFillColor(UIColor.black.cgColor)
+            context.setShadow(offset: CGSize(width: -10.0, height: 10.0), blur: innerShadowBlur, color: lightShadeColor.cgColor)
+            context.fillPath(using: .evenOdd)
+
+            context.restoreGState()
+
+            context.setLineWidth(lineWidth)
+
+            // Left half gradient border
+            context.addRect(CGRect(x: 0.0, y: 0.0, width: size.width * 0.5, height: size.height))
+            context.clip()
+            context.addEllipse(in: CGRect(origin: .zero, size: size).insetBy(dx: lineWidth * 0.5, dy: lineWidth * 0.5))
+            context.replacePathWithStrokedPath()
+            context.clip()
+
+            do {
+                var locations: [CGFloat] = [0.0, 0.5, 0.5 + 0.2, 1.0 - 0.1, 1.0]
+                let colors: [CGColor] = [maxColor.cgColor, maxColor.cgColor, minColor.cgColor, minColor.cgColor, maxColor.cgColor]
+
+                let colorSpace = CGColorSpaceCreateDeviceRGB()
+                let gradient = CGGradient(colorsSpace: colorSpace, colors: colors as CFArray, locations: &locations)!
+
+                context.drawLinearGradient(gradient, start: CGPoint(x: 0.0, y: 0.0), end: CGPoint(x: 0.0, y: size.height), options: CGGradientDrawingOptions())
+            }
+
+            // Right half gradient border
+            context.resetClip()
+            context.addRect(CGRect(x: size.width - size.width * 0.5, y: 0.0, width: size.width * 0.5, height: size.height))
+            context.clip()
+            context.addEllipse(in: CGRect(origin: .zero, size: size).insetBy(dx: lineWidth * 0.5, dy: lineWidth * 0.5))
+            context.replacePathWithStrokedPath()
+            context.clip()
+
+            do {
+                var locations: [CGFloat] = [0.0, 0.1, 0.5 - 0.2, 0.5, 1.0]
+                let colors: [CGColor] = [maxColor.cgColor, minColor.cgColor, minColor.cgColor, maxColor.cgColor, maxColor.cgColor]
+
+                let colorSpace = CGColorSpaceCreateDeviceRGB()
+                let gradient = CGGradient(colorsSpace: colorSpace, colors: colors as CFArray, locations: &locations)!
+
+                context.drawLinearGradient(gradient, start: CGPoint(x: 0.0, y: 0.0), end: CGPoint(x: 0.0, y: size.height), options: CGGradientDrawingOptions())
+            }
+        }.stretchableImage(withLeftCapWidth: Int(size.width * 0.5), topCapHeight: Int(size.height * 0.5))
+    }
+
+    // MARK: - Shadow Image
+
+    static func generateShadowImage(cornerRadius: CGFloat) -> UIImage? {
+        let inset: CGFloat = 32
+        let innerInset: CGFloat = 0.5
+        let diameter = cornerRadius * 2
+        let totalSize = CGSize(width: inset * 2 + diameter, height: inset * 2 + diameter)
+
+        let image = UIGraphicsImageRenderer(size: totalSize).image { ctx in
+            let context = ctx.cgContext
+            context.clear(CGRect(origin: .zero, size: totalSize))
+
+            context.setFillColor(UIColor.black.cgColor)
+            context.setShadow(
+                offset: CGSize(width: 0, height: 1),
+                blur: 40.0,
+                color: UIColor(white: 0.0, alpha: 0.04).cgColor
+            )
+            let ellipseRect = CGRect(
+                x: inset + innerInset,
+                y: inset + innerInset,
+                width: totalSize.width - (inset + innerInset) * 2,
+                height: totalSize.height - (inset + innerInset) * 2
+            )
+            context.fillEllipse(in: ellipseRect)
+
+            context.setFillColor(UIColor.clear.cgColor)
+            context.setBlendMode(.copy)
+            context.fillEllipse(in: ellipseRect)
+        }
+        return image.stretchableImage(
+            withLeftCapWidth: Int(inset + cornerRadius),
+            topCapHeight: Int(inset + cornerRadius)
+        )
+    }
+}

Rosetta/DesignSystem/Components/GlassMeshTransform.swift

@@ -0,0 +1,557 @@
+import Foundation
+import UIKit
+
+// MARK: - Mesh Transform Structs (matching CAMutableMeshTransform memory layout)
+
+struct MeshTransformMeshFace {
+    var indices: (UInt32, UInt32, UInt32, UInt32)
+    var w: (Float, Float, Float, Float)
+}
+
+struct MeshTransformPoint3D {
+    var x: CGFloat
+    var y: CGFloat
+    var z: CGFloat
+}
+
+struct MeshTransformMeshVertex {
+    var from: CGPoint
+    var to: MeshTransformPoint3D
+}
+
+// MARK: - MeshTransform (wraps private CAMutableMeshTransform)
+
+final class GlassMeshTransform {
+    typealias Value = NSObject
+    typealias Point3D = MeshTransformPoint3D
+    typealias Vertex = MeshTransformMeshVertex
+    typealias Face = MeshTransformMeshFace
+
+    private var vertices: ContiguousArray<Vertex> = []
+    private var faces: ContiguousArray<Face> = []
+
+    func add(_ vertex: Vertex) {
+        vertices.append(vertex)
+    }
+
+    func add(_ face: Face) {
+        faces.append(face)
+    }
+
+    func makeValue() -> Value? {
+        let result = vertices.withUnsafeMutableBufferPointer { vertices -> NSObject? in
+            return faces.withUnsafeMutableBufferPointer { faces -> NSObject? in
+                return Self.invokeCreateCustomMethod(
+                    vertexCount: UInt(vertices.count),
+                    vertices: vertices.baseAddress!,
+                    faceCount: UInt(faces.count),
+                    faces: faces.baseAddress!,
+                    depthNormalization: "none"
+                )
+            }
+        }
+        if let result {
+            Self.invokeSetSubdivisionSteps(object: result, value: 0)
+        }
+        return result
+    }
+
+    // MARK: - Private API Access
+
+    private static let transformClass: NSObject? = {
+        let name = ("CAMutable" as NSString).appendingFormat("MeshTransform")
+        return NSClassFromString(name as String) as AnyObject as? NSObject
+    }()
+
+    @inline(__always)
+    private static func getMethod<T>(object: NSObject, selector: String) -> T? {
+        guard let method = object.method(for: NSSelectorFromString(selector)) else { return nil }
+        return unsafeBitCast(method, to: T.self)
+    }
+
+    private static var cachedCreateCustomMethod: ((@convention(c) (AnyObject, Selector, UInt, UnsafeMutableRawPointer, UInt, UnsafeMutableRawPointer, NSString) -> NSObject?), Selector)?
+
+    private static func invokeCreateCustomMethod(
+        vertexCount: UInt,
+        vertices: UnsafeMutablePointer<MeshTransformMeshVertex>,
+        faceCount: UInt,
+        faces: UnsafeMutablePointer<MeshTransformMeshFace>,
+        depthNormalization: String
+    ) -> NSObject? {
+        guard let transformClass else { return nil }
+        let rawVertices = UnsafeMutableRawPointer(vertices)
+        let rawFaces = UnsafeMutableRawPointer(faces)
+        if let cached = cachedCreateCustomMethod {
+            return cached.0(transformClass, cached.1, vertexCount, rawVertices, faceCount, rawFaces, depthNormalization as NSString)
+        }
+        let selectorName = ("meshTransf" as NSString).appending("ormWithVertexCount:vertices:faceCount:faces:depthNormalization:")
+        let method: (@convention(c) (AnyObject, Selector, UInt, UnsafeMutableRawPointer, UInt, UnsafeMutableRawPointer, NSString) -> NSObject?)? = getMethod(object: transformClass, selector: selectorName)
+        if let method {
+            let selector = NSSelectorFromString(selectorName)
+            cachedCreateCustomMethod = (method, selector)
+            return method(transformClass, selector, vertexCount, rawVertices, faceCount, rawFaces, depthNormalization as NSString)
+        }
+        return nil
+    }
+
+    private static var cachedSetSubdivisionSteps: ((@convention(c) (AnyObject, Selector, Int) -> Void), Selector)?
+
+    private static func invokeSetSubdivisionSteps(object: NSObject, value: Int) {
+        if let cached = cachedSetSubdivisionSteps {
+            cached.0(object, cached.1, value)
+            return
+        }
+        let method: (@convention(c) (AnyObject, Selector, Int) -> Void)? = getMethod(object: object, selector: "setSubdivisionSteps:")
+        if let method {
+            let selector = NSSelectorFromString("setSubdivisionSteps:")
+            cachedSetSubdivisionSteps = (method, selector)
+            method(object, selector, value)
+        }
+    }
+}
+
+// MARK: - Bezier Helpers
+
+private func a(_ a1: CGFloat, _ a2: CGFloat) -> CGFloat {
+    return 1.0 - 3.0 * a2 + 3.0 * a1
+}
+
+private func b(_ a1: CGFloat, _ a2: CGFloat) -> CGFloat {
+    return 3.0 * a2 - 6.0 * a1
+}
+
+private func c(_ a1: CGFloat) -> CGFloat {
+    return 3.0 * a1
+}
+
+private func calcBezier(_ t: CGFloat, _ a1: CGFloat, _ a2: CGFloat) -> CGFloat {
+    return ((a(a1, a2) * t + b(a1, a2)) * t + c(a1)) * t
+}
+
+private func calcSlope(_ t: CGFloat, _ a1: CGFloat, _ a2: CGFloat) -> CGFloat {
+    return 3.0 * a(a1, a2) * t * t + 2.0 * b(a1, a2) * t + c(a1)
+}
+
+private func getTForX(_ x: CGFloat, _ x1: CGFloat, _ x2: CGFloat) -> CGFloat {
+    var t = x
+    for _ in 0..<4 {
+        let currentSlope = calcSlope(t, x1, x2)
+        if currentSlope == 0.0 {
+            return t
+        }
+        let currentX = calcBezier(t, x1, x2) - x
+        t -= currentX / currentSlope
+    }
+    return t
+}
+
+private func bezierPoint(_ x1: CGFloat, _ y1: CGFloat, _ x2: CGFloat, _ y2: CGFloat, _ x: CGFloat) -> CGFloat {
+    var value = calcBezier(getTForX(x, x1, x2), y1, y2)
+    if value >= 0.997 {
+        value = 1.0
+    }
+    return value
+}
+
+// MARK: - Displacement Bezier
+
+struct DisplacementBezier {
+    var x1: CGFloat
+    var y1: CGFloat
+    var x2: CGFloat
+    var y2: CGFloat
+}
+
+// MARK: - SDF + Displacement
+
+func roundedRectSDF(x: CGFloat, y: CGFloat, width: CGFloat, height: CGFloat, cornerRadius: CGFloat) -> CGFloat {
+    let px = x - width / 2
+    let py = y - height / 2
+    let bx = width / 2
+    let by = height / 2
+    let qx = abs(px) - bx + cornerRadius
+    let qy = abs(py) - by + cornerRadius
+    let outsideDist = hypot(max(qx, 0), max(qy, 0))
+    let insideDist = min(max(qx, qy), 0)
+    return outsideDist + insideDist - cornerRadius
+}
+
+private func roundedRectGradient(x: CGFloat, y: CGFloat, width: CGFloat, height: CGFloat, cornerRadius: CGFloat) -> (nx: CGFloat, ny: CGFloat) {
+    let px = x - width / 2
+    let py = y - height / 2
+    let bx = width / 2
+    let by = height / 2
+    let qx = abs(px) - bx + cornerRadius
+    let qy = abs(py) - by + cornerRadius
+
+    var nx: CGFloat = 0
+    var ny: CGFloat = 0
+
+    if qx > 0 && qy > 0 {
+        let d = hypot(qx, qy)
+        if d > 0 {
+            nx = qx / d
+            ny = qy / d
+        }
+    } else if qx > qy {
+        nx = 1
+        ny = 0
+    } else {
+        nx = 0
+        ny = 1
+    }
+
+    if px < 0 { nx = -nx }
+    if py < 0 { ny = -ny }
+
+    return (nx, ny)
+}
+
+private func computeDisplacement(
+    x: CGFloat, y: CGFloat,
+    width: CGFloat, height: CGFloat,
+    cornerRadius: CGFloat,
+    edgeDistance: CGFloat,
+    bezier: DisplacementBezier
+) -> (dx: CGFloat, dy: CGFloat, sdf: CGFloat) {
+    let sdf = roundedRectSDF(x: x, y: y, width: width, height: height, cornerRadius: cornerRadius)
+    let (nx, ny) = roundedRectGradient(x: x, y: y, width: width, height: height, cornerRadius: cornerRadius)
+
+    let inwardX = -nx
+    let inwardY = -ny
+    let distFromEdge = -sdf
+    let weight = max(0, min(1, 1.0 - distFromEdge / edgeDistance))
+
+    var dx = inwardX * weight
+    var dy = inwardY * weight
+
+    let mag = hypot(dx, dy)
+    if mag > 0 {
+        let newMag = bezierPoint(bezier.x1, bezier.y1, bezier.x2, bezier.y2, mag)
+        let scale = newMag / mag
+        dx *= scale
+        dy *= scale
+    }
+
+    return (dx, dy, sdf)
+}
+
+// MARK: - Mesh Template Cache
+
+private struct GlassMeshCacheKey: Hashable {
+    var cornerRadius: CGFloat
+    var edgeDistance: CGFloat
+    var cornerResolution: Int
+    var outerEdgeDistance: CGFloat
+    var bezierX1: CGFloat
+    var bezierY1: CGFloat
+    var bezierX2: CGFloat
+    var bezierY2: CGFloat
+
+    init(cornerRadius: CGFloat, edgeDistance: CGFloat, cornerResolution: Int, outerEdgeDistance: CGFloat, bezier: DisplacementBezier) {
+        self.cornerRadius = cornerRadius
+        self.edgeDistance = edgeDistance
+        self.cornerResolution = cornerResolution
+        self.outerEdgeDistance = outerEdgeDistance
+        self.bezierX1 = bezier.x1
+        self.bezierY1 = bezier.y1
+        self.bezierX2 = bezier.x2
+        self.bezierY2 = bezier.y2
+    }
+}
+
+private struct GlassMeshTemplate {
+    struct VertexTemplate {
+        var baseX: CGFloat
+        var sizeScaleX: CGFloat
+        var baseY: CGFloat
+        var sizeScaleY: CGFloat
+        var dispX: CGFloat
+        var dispY: CGFloat
+        var depth: CGFloat
+    }
+
+    var vertices: ContiguousArray<VertexTemplate>
+    var faces: ContiguousArray<GlassMeshTransform.Face>
+}
+
+private var glassMeshTemplateCache: [GlassMeshCacheKey: GlassMeshTemplate] = [:]
+
+private func instantiateGlassMesh(
+    from template: GlassMeshTemplate,
+    size: CGSize,
+    displacementMagnitudeU: CGFloat,
+    displacementMagnitudeV: CGFloat
+) -> GlassMeshTransform {
+    let W = size.width
+    let H = size.height
+    let insetPoints: CGFloat = -1.0
+    let insetUOffset = insetPoints / W
+    let insetVOffset = insetPoints / H
+    let usableUNorm = (W - insetPoints * 2) / W
+    let usableVNorm = (H - insetPoints * 2) / H
+
+    let transform = GlassMeshTransform()
+    for v in template.vertices {
+        let worldX = v.baseX + v.sizeScaleX * W
+        let worldY = v.baseY + v.sizeScaleY * H
+        let u = worldX / W
+        let vCoord = worldY / H
+        let mappedU = insetUOffset + u * usableUNorm
+        let mappedV = insetVOffset + vCoord * usableVNorm
+        let fromX = max(0.0, min(1.0, mappedU + v.dispX * displacementMagnitudeU))
+        let fromY = max(0.0, min(1.0, mappedV + v.dispY * displacementMagnitudeV))
+        transform.add(GlassMeshTransform.Vertex(
+            from: CGPoint(x: fromX, y: fromY),
+            to: GlassMeshTransform.Point3D(x: mappedU, y: mappedV, z: v.depth)
+        ))
+    }
+    for face in template.faces {
+        transform.add(face)
+    }
+    return transform
+}
+
+private func generateGlassMeshTemplate(
+    cornerRadius: CGFloat,
+    edgeDistance: CGFloat,
+    cornerResolution: Int,
+    outerEdgeDistance: CGFloat,
+    bezier: DisplacementBezier
+) -> GlassMeshTemplate {
+    let clampedRadius = cornerRadius
+    let refW = max(4 * clampedRadius, 100)
+    let refH = max(4 * clampedRadius, 100)
+
+    var vertices = ContiguousArray<GlassMeshTemplate.VertexTemplate>()
+    var faces = ContiguousArray<GlassMeshTransform.Face>()
+    var vertexIndex: Int = 0
+
+    func templateDisplacement(worldX: CGFloat, worldY: CGFloat) -> (CGFloat, CGFloat) {
+        let (rawDispX, rawDispY, sdf) = computeDisplacement(
+            x: worldX, y: worldY,
+            width: refW, height: refH,
+            cornerRadius: clampedRadius,
+            edgeDistance: edgeDistance,
+            bezier: bezier
+        )
+        let distToEdge = max(0.0, -sdf)
+        let edgeBand = max(0.0, outerEdgeDistance)
+        let edgeBoost: CGFloat
+        if edgeBand > 0 {
+            let t = max(0.0, min(1.0, (edgeBand - distToEdge) / edgeBand))
+            edgeBoost = 1.0 + t * t * (3 - 2 * t) * 0.5
+        } else {
+            edgeBoost = 1.0
+        }
+        return (rawDispX * edgeBoost, rawDispY * edgeBoost)
+    }
+
+    func addVertex(baseX: CGFloat, scaleX: CGFloat, baseY: CGFloat, scaleY: CGFloat, depth: CGFloat = 0) -> Int {
+        let worldX = baseX + scaleX * refW
+        let worldY = baseY + scaleY * refH
+        let (dispX, dispY) = templateDisplacement(worldX: worldX, worldY: worldY)
+        vertices.append(GlassMeshTemplate.VertexTemplate(
+            baseX: baseX, sizeScaleX: scaleX,
+            baseY: baseY, sizeScaleY: scaleY,
+            dispX: dispX, dispY: dispY, depth: depth
+        ))
+        let idx = vertexIndex
+        vertexIndex += 1
+        return idx
+    }
+
+    func addQuadFace(_ i0: Int, _ i1: Int, _ i2: Int, _ i3: Int) {
+        faces.append(GlassMeshTransform.Face(
+            indices: (UInt32(i0), UInt32(i1), UInt32(i2), UInt32(i3)),
+            w: (0.0, 0.0, 0.0, 0.0)
+        ))
+    }
+
+    let angularStepsBase = max(3, cornerResolution)
+    let angularSteps = angularStepsBase % 2 == 0 ? angularStepsBase : angularStepsBase + 1
+    let radialSteps = max(2, cornerResolution)
+    let horizontalSegments = max(2, cornerResolution / 2 + 1)
+    let verticalSegments = max(2, cornerResolution / 2 + 1)
+    let R = clampedRadius
+
+    func depthFactorsWithOuterBand(count: Int, band: CGFloat, maxRadius: CGFloat) -> [CGFloat] {
+        guard count > 0, maxRadius > 0 else { return [0, 1] }
+        let bandNorm = max(0, min(1, band / maxRadius))
+        let innerSegments = max(1, count - 1)
+        let innerMax = max(0, 1 - bandNorm)
+        var factors: [CGFloat] = (0...innerSegments).map { i in
+            innerMax * CGFloat(i) / CGFloat(innerSegments)
+        }
+        func appendUnique(_ value: CGFloat) {
+            if let last = factors.last, abs(last - value) < 1e-4 { return }
+            factors.append(value)
+        }
+        appendUnique(innerMax)
+        appendUnique(1.0)
+        return factors
+    }
+
+    let depthFactors = depthFactorsWithOuterBand(count: radialSteps, band: outerEdgeDistance, maxRadius: R)
+    let angularFactors = (0...angularSteps).map { CGFloat($0) / CGFloat(angularSteps) }
+    let outerToInner = depthFactors.reversed()
+
+    let topXCoeffs: [(base: CGFloat, scale: CGFloat)] = (0...horizontalSegments).map { i in
+        let t = CGFloat(i) / CGFloat(horizontalSegments)
+        return (base: R * (1 - 2 * t), scale: t)
+    }
+    let sideYCoeffs: [(base: CGFloat, scale: CGFloat)] = (0...verticalSegments).map { j in
+        let t = CGFloat(j) / CGFloat(verticalSegments)
+        return (base: R * (1 - 2 * t), scale: t)
+    }
+    let topYCoeffs: [(base: CGFloat, scale: CGFloat)] = outerToInner.map { factor in
+        (base: R * (1 - factor), scale: 0)
+    }
+    let bottomYCoeffs: [(base: CGFloat, scale: CGFloat)] = depthFactors.map { factor in
+        (base: -R * (1 - factor), scale: 1)
+    }
+    let leftXCoeffs: [(base: CGFloat, scale: CGFloat)] = outerToInner.map { factor in
+        (base: R * (1 - factor), scale: 0)
+    }
+    let rightXCoeffs: [(base: CGFloat, scale: CGFloat)] = depthFactors.map { factor in
+        (base: -R * (1 - factor), scale: 1)
+    }
+
+    func buildGridTemplate(
+        xCoeffs: [(base: CGFloat, scale: CGFloat)],
+        yCoeffs: [(base: CGFloat, scale: CGFloat)]
+    ) {
+        var indexGrid: [[Int]] = []
+        for yc in yCoeffs {
+            var row: [Int] = []
+            for xc in xCoeffs {
+                row.append(addVertex(baseX: xc.base, scaleX: xc.scale, baseY: yc.base, scaleY: yc.scale))
+            }
+            indexGrid.append(row)
+        }
+        let numRows = indexGrid.count - 1
+        let numCols = indexGrid.first!.count - 1
+        for row in 0..<numRows {
+            for col in 0..<numCols {
+                addQuadFace(
+                    indexGrid[row][col],
+                    indexGrid[row][col + 1],
+                    indexGrid[row + 1][col + 1],
+                    indexGrid[row + 1][col]
+                )
+            }
+        }
+    }
+
+    func buildCornerTemplate(
+        centerBaseX: CGFloat, centerScaleX: CGFloat,
+        centerBaseY: CGFloat, centerScaleY: CGFloat,
+        startAngle: CGFloat, endAngle: CGFloat
+    ) {
+        let ringRadials = outerToInner.filter { $0 > 0 }
+        guard !ringRadials.isEmpty else { return }
+
+        var ringIndices: [[Int]] = []
+        for radial in ringRadials {
+            let r = R * radial
+            var row: [Int] = []
+            for t in angularFactors {
+                let angle = startAngle + (endAngle - startAngle) * t
+                let offsetX = r * cos(angle)
+                let offsetY = r * sin(angle)
+                row.append(addVertex(
+                    baseX: centerBaseX + offsetX, scaleX: centerScaleX,
+                    baseY: centerBaseY + offsetY, scaleY: centerScaleY
+                ))
+            }
+            ringIndices.append(row)
+        }
+
+        for r in 0..<(ringIndices.count - 1) {
+            let outerRing = ringIndices[r]
+            let innerRing = ringIndices[r + 1]
+            for i in 0..<(outerRing.count - 1) {
+                addQuadFace(outerRing[i], outerRing[i + 1], innerRing[i + 1], innerRing[i])
+            }
+        }
+
+        if let innermostRing = ringIndices.last {
+            let ringSegments = innermostRing.count - 1
+            guard ringSegments >= 2 else { return }
+
+            let centerAnchor = addVertex(
+                baseX: centerBaseX, scaleX: centerScaleX,
+                baseY: centerBaseY, scaleY: centerScaleY,
+                depth: -0.02
+            )
+            let stride = 2
+            var i = 0
+            while i + 2 <= ringSegments {
+                addQuadFace(centerAnchor, innermostRing[i], innermostRing[i + 1], innermostRing[i + 2])
+                i += stride
+            }
+            if i < ringSegments {
+                addQuadFace(centerAnchor, innermostRing[ringSegments - 1], innermostRing[ringSegments], innermostRing[ringSegments])
+            }
+        }
+    }
+
+    // Edge strips
+    buildGridTemplate(xCoeffs: topXCoeffs, yCoeffs: topYCoeffs)
+    buildGridTemplate(xCoeffs: topXCoeffs, yCoeffs: bottomYCoeffs)
+    buildGridTemplate(xCoeffs: leftXCoeffs, yCoeffs: sideYCoeffs)
+    buildGridTemplate(xCoeffs: rightXCoeffs, yCoeffs: sideYCoeffs)
+
+    // Center patch
+    buildGridTemplate(xCoeffs: topXCoeffs, yCoeffs: sideYCoeffs)
+
+    // Corners
+    buildCornerTemplate(centerBaseX: R, centerScaleX: 0, centerBaseY: R, centerScaleY: 0, startAngle: .pi, endAngle: 1.5 * .pi)
+    buildCornerTemplate(centerBaseX: -R, centerScaleX: 1, centerBaseY: R, centerScaleY: 0, startAngle: 1.5 * .pi, endAngle: 2 * .pi)
+    buildCornerTemplate(centerBaseX: -R, centerScaleX: 1, centerBaseY: -R, centerScaleY: 1, startAngle: .pi / 2, endAngle: 0)
+    buildCornerTemplate(centerBaseX: R, centerScaleX: 0, centerBaseY: -R, centerScaleY: 1, startAngle: .pi, endAngle: .pi / 2)
+
+    return GlassMeshTemplate(vertices: vertices, faces: faces)
+}
+
+// MARK: - Public Entry Point
+
+func generateGlassMesh(
+    size: CGSize,
+    cornerRadius: CGFloat,
+    edgeDistance: CGFloat,
+    displacementMagnitudeU: CGFloat,
+    displacementMagnitudeV: CGFloat,
+    cornerResolution: Int,
+    outerEdgeDistance: CGFloat,
+    bezier: DisplacementBezier
+) -> GlassMeshTransform {
+    let clampedRadius = min(cornerRadius, min(size.width, size.height) / 2)
+
+    let key = GlassMeshCacheKey(
+        cornerRadius: clampedRadius,
+        edgeDistance: edgeDistance,
+        cornerResolution: cornerResolution,
+        outerEdgeDistance: outerEdgeDistance,
+        bezier: bezier
+    )
+    let template: GlassMeshTemplate
+    if let cached = glassMeshTemplateCache[key] {
+        template = cached
+    } else {
+        template = generateGlassMeshTemplate(
+            cornerRadius: clampedRadius,
+            edgeDistance: edgeDistance,
+            cornerResolution: cornerResolution,
+            outerEdgeDistance: outerEdgeDistance,
+            bezier: bezier
+        )
+        glassMeshTemplateCache[key] = template
+    }
+    return instantiateGlassMesh(
+        from: template,
+        size: size,
+        displacementMagnitudeU: displacementMagnitudeU,
+        displacementMagnitudeV: displacementMagnitudeV
+    )
+}

Rosetta/DesignSystem/Components/GlassModifiers.swift

@@ -1,16 +1,100 @@
 import SwiftUI
+import UIKit
+
+// MARK: - Telegram-style Navigation Bar Blur (NavigationBackgroundNode parity)
+//
+// Telegram uses UIVisualEffectView(UIBlurEffect(.light)) with stripped filters:
+// keeps only gaussianBlur + colorSaturate, removes everything else.
+// This is NOT the same as Apple's .regularMaterial.
+
+/// UIViewRepresentable that replicates Telegram's NavigationBackgroundNode blur.
+struct TelegramNavBlurView: UIViewRepresentable {
+    func makeUIView(context: Context) -> TelegramNavBlurUIView {
+        let view = TelegramNavBlurUIView(frame: .zero)
+        view.isUserInteractionEnabled = false
+        return view
+    }
+
+    func updateUIView(_ uiView: TelegramNavBlurUIView, context: Context) {}
+}
+
+/// UIKit implementation of Telegram's NavigationBackgroundNode blur.
+/// Uses UIBlurEffect(.light) with only gaussianBlur + colorSaturate filters.
+final class TelegramNavBlurUIView: UIView {
+    private let effectView: UIVisualEffectView
+    private let tintLayer = CALayer()
+
+    override init(frame: CGRect) {
+        self.effectView = UIVisualEffectView(effect: UIBlurEffect(style: .light))
+
+        super.init(frame: frame)
+        clipsToBounds = true
+        isUserInteractionEnabled = false
+
+        // Strip UIVisualEffectView subviews (same as Telegram)
+        for subview in effectView.subviews {
+            if subview.description.contains("VisualEffectSubview") {
+                subview.isHidden = true
+            }
+        }
+
+        // Keep only gaussianBlur + colorSaturate filters on the backdrop sublayer
+        if let sublayer = effectView.layer.sublayers?[0], let filters = sublayer.filters {
+            sublayer.backgroundColor = nil
+            sublayer.isOpaque = false
+            let allowedKeys: [String] = ["colorSaturate", "gaussianBlur"]
+            sublayer.filters = filters.filter { filter in
+                guard let filter = filter as? NSObject else { return true }
+                let filterName = String(describing: filter)
+                return allowedKeys.contains(filterName)
+            }
+        }
+
+        addSubview(effectView)
+
+        // Tint overlay — Telegram applies the bar color on top of blur
+        tintLayer.backgroundColor = UIColor { traits in
+            traits.userInterfaceStyle == .dark
+                ? UIColor(white: 0.0, alpha: 0.85)
+                : UIColor(white: 1.0, alpha: 0.85)
+        }.cgColor
+        layer.addSublayer(tintLayer)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        effectView.frame = bounds
+        tintLayer.frame = bounds
+    }
+
+    override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        super.traitCollectionDidChange(previousTraitCollection)
+        guard traitCollection.userInterfaceStyle != previousTraitCollection?.userInterfaceStyle else { return }
+        tintLayer.backgroundColor = traitCollection.userInterfaceStyle == .dark
+            ? UIColor(white: 0.0, alpha: 0.85).cgColor
+            : UIColor(white: 1.0, alpha: 0.85).cgColor
+    }
+}
 
 // MARK: - Glass Navigation Bar Modifier
 
 /// iOS 26+: native glassmorphism (no explicit background needed).
-/// iOS < 26: frosted glass material (Telegram-style).
+/// iOS < 26: Telegram-style blur (UIBlurEffect(.light) + stripped filters).
 struct GlassNavBarModifier: ViewModifier {
     func body(content: Content) -> some View {
         if #available(iOS 26, *) {
             content
         } else {
             content
-                .toolbarBackground(.regularMaterial, for: .navigationBar)
+                .toolbarBackground(.hidden, for: .navigationBar)
+                .background {
+                    TelegramNavBlurView()
+                        .ignoresSafeArea(edges: .top)
+                }
         }
     }
 }

Rosetta/DesignSystem/Components/RosettaTabBar.swift

@@ -1,12 +1,11 @@
 import SwiftUI
 import UIKit
+import Lottie
 
 // MARK: - Tab
 
 enum RosettaTab: String, CaseIterable, Sendable {
-    case chats
+    case chats, calls, settings
-    case calls
-    case settings
 
     static let interactionOrder: [RosettaTab] = [.calls, .chats, .settings]
 
@@ -18,6 +17,14 @@ enum RosettaTab: String, CaseIterable, Sendable {
         }
     }
 
+    var animationName: String {
+        switch self {
+        case .chats: return "TabChats"
+        case .calls: return "TabCalls"
+        case .settings: return "TabSettings"
+        }
+    }
+
     var icon: String {
         switch self {
         case .chats: return "bubble.left.and.bubble.right"
@@ -39,366 +46,396 @@ enum RosettaTab: String, CaseIterable, Sendable {
     }
 }
 
-// MARK: - Tab Badge
+struct TabBadge { let tab: RosettaTab; let text: String }
-
-struct TabBadge {
-    let tab: RosettaTab
-    let text: String
-}
-
 struct TabBarSwipeState {
-    let fromTab: RosettaTab
+    let fromTab: RosettaTab; let hoveredTab: RosettaTab; let fractionalIndex: CGFloat
-    let hoveredTab: RosettaTab
-    let fractionalIndex: CGFloat
 }
 
-// MARK: - Tab Bar Colors
+// MARK: - Colors
 
-private enum TabBarColors {
+private enum TabBarUIColors {
-    static let pillBackground = RosettaColors.adaptive(
+    static let icon = UIColor { $0.userInterfaceStyle == .dark ? .white : UIColor(red: 0.6, green: 0.6, blue: 0.6, alpha: 1) }
-        light: Color(hex: 0xF2F2F7),
+    static let selectedIcon = UIColor(RosettaColors.primaryBlue)
-        dark: Color(hex: 0x2C2C2E)
+    static let text = UIColor { $0.userInterfaceStyle == .dark ? .white : UIColor(red: 0, green: 0, blue: 0, alpha: 0.8) }
-    )
+    static let selectedText = UIColor(RosettaColors.primaryBlue)
-    static let selectionBackground = RosettaColors.adaptive(
+    // Badge always red/white — matches Telegram screenshots in both themes
-        light: Color.white,
+    static let badgeBg = UIColor(red: 1, green: 0.23, blue: 0.19, alpha: 1)
-        dark: Color(hex: 0x3A3A3C)
+    static let badgeText = UIColor.white
-    )
+    static let selectionFill = UIColor.white.withAlphaComponent(0.07)
-    static let selectedTint = Color(hex: 0x008BFF)
-    static let unselectedTint = RosettaColors.adaptive(
-        light: Color(hex: 0x3C3C43).opacity(0.6),
-        dark: Color.white
-    )
-    static let pillBorder = RosettaColors.adaptive(
-        light: Color.black.opacity(0.08),
-        dark: Color.white.opacity(0.08)
-    )
 }
 
-// MARK: - Preference Keys
+// MARK: - Gesture (Telegram TabSelectionRecognizer)
 
-private struct TabWidthPreferenceKey: PreferenceKey {
+private final class TabSelectionGesture: UIGestureRecognizer {
-    static var defaultValue: [Int: CGFloat] = [:]
+    private(set) var initialLocation: CGPoint = .zero
-    static func reduce(value: inout [Int: CGFloat], nextValue: () -> [Int: CGFloat]) {
+
-        value.merge(nextValue()) { $1 }
+    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
+        super.touchesBegan(touches, with: event)
+        initialLocation = touches.first?.location(in: view) ?? .zero
+        state = .began
+    }
+    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
+        super.touchesMoved(touches, with: event)
+        state = .changed
+    }
+    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent) {
+        super.touchesEnded(touches, with: event)
+        state = .ended
+    }
+    override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent) {
+        super.touchesCancelled(touches, with: event)
+        state = .cancelled
     }
 }
 
-private struct TabOriginPreferenceKey: PreferenceKey {
+// MARK: - RosettaTabBarUIView
-    static var defaultValue: [Int: CGFloat] = [:]
+
-    static func reduce(value: inout [Int: CGFloat], nextValue: () -> [Int: CGFloat]) {
+final class RosettaTabBarUIView: UIView {
-        value.merge(nextValue()) { $1 }
+
+    private let tabs = RosettaTab.interactionOrder
+    private let innerInset: CGFloat = 4
+    private let itemHeight: CGFloat = 56
+    private let perItemWidth: CGFloat = 90
+    /// Telegram LiquidLens inset — visible gap between lens and capsule edge.
+    private let lensInset: CGFloat = 4
+    /// Telegram: 1.15 scale when gesture active. Toned down for subtlety.
+    private let liftedScale: CGFloat = 1.08
+
+    private var barWidth: CGFloat { perItemWidth * CGFloat(tabs.count) + innerInset * 2 }
+    private var barHeight: CGFloat { itemHeight + innerInset * 2 }
+    private var itemW: CGFloat { (bounds.width - innerInset * 2) / CGFloat(tabs.count) }
+
+    // MARK: State
+
+    var selectedIndex: Int = 1 {
+        didSet { if oldValue != selectedIndex { updateSelection(animated: true) } }
+    }
+    var onTabSelected: ((RosettaTab) -> Void)?
+    var badgeText: String? { didSet { layoutBadge() } }
+
+    private var isDragging = false
+    private var dragLensX: CGFloat = 0
+    private var dragStartLensX: CGFloat = 0
+    private var hoveredIndex: Int = 1
+
+    // MARK: Subviews
+
+    private let glassBackground = TelegramGlassUIView(frame: .zero)
+    private let selectionView: UIView = {
+        let v = UIView()
+        v.backgroundColor = TabBarUIColors.selectionFill
+        v.layer.masksToBounds = true
+        return v
+    }()
+    private var iconViews: [LottieAnimationView] = []
+    private var labelViews: [UILabel] = []
+    private var badgeBgView: UIView?
+    private var badgeLabel: UILabel?
+    private var appliedColorHex: [Int: UInt64] = [:]
+
+    // MARK: Init
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        backgroundColor = .clear
+        addSubview(glassBackground)
+        addSubview(selectionView)
+
+        for (i, tab) in tabs.enumerated() {
+            let lottie = LottieAnimationView()
+            lottie.contentMode = .scaleAspectFit
+            lottie.isUserInteractionEnabled = false
+            lottie.backgroundBehavior = .pauseAndRestore
+            if let anim = LottieAnimationCache.shared.animation(named: tab.animationName) {
+                lottie.animation = anim
+            } else {
+                lottie.animation = LottieAnimation.named(tab.animationName)
+            }
+            lottie.loopMode = .playOnce
+            lottie.currentProgress = 1.0
+            addSubview(lottie)
+            iconViews.append(lottie)
+
+            let label = UILabel()
+            label.text = tab.label
+            label.font = .systemFont(ofSize: 10, weight: .semibold)
+            label.textAlignment = .center
+            addSubview(label)
+            labelViews.append(label)
+            applyColor(to: i, selected: i == selectedIndex, animated: false)
+        }
+
+        let g = TabSelectionGesture(target: self, action: #selector(handleGesture(_:)))
+        g.delegate = self
+        addGestureRecognizer(g)
+    }
+
+    required init?(coder: NSCoder) { fatalError() }
+
+    override var intrinsicContentSize: CGSize { CGSize(width: barWidth, height: barHeight) }
+
+    // MARK: Layout
+
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        let w = bounds.width; let h = bounds.height
+        glassBackground.frame = bounds
+        glassBackground.updateGlass()
+        updateSelectionFrame(animated: false)
+
+        let iw = itemW
+        for i in 0..<tabs.count {
+            let x = innerInset + CGFloat(i) * iw
+            let iconSize: CGFloat = 44
+            let iconX = x + (iw - iconSize) / 2
+            let iconY = innerInset + 1
+            iconViews[i].frame = CGRect(x: iconX, y: iconY, width: iconSize, height: iconSize)
+
+            let labelH: CGFloat = 14
+            let labelY = h - innerInset - labelH - 1
+            labelViews[i].frame = CGRect(x: x, y: labelY, width: iw, height: labelH)
+        }
+        layoutBadge()
+    }
+
+    // MARK: Selection Indicator
+
+    private func lensFrame(for index: Int) -> CGRect {
+        let iw = itemW
+        let lensH = bounds.height - lensInset * 2
+        let lensW = iw
+        let lensX = innerInset + CGFloat(index) * iw
+        return CGRect(x: lensX, y: lensInset, width: lensW, height: lensH)
+    }
+
+    private func updateSelectionFrame(animated: Bool) {
+        guard bounds.width > 0 else { return }
+        let lensH = bounds.height - lensInset * 2
+        selectionView.layer.cornerRadius = lensH / 2
+
+        if isDragging {
+            // Lens follows finger — clamped to capsule bounds
+            let lensW = itemW
+            let minX = lensInset
+            let maxX = bounds.width - lensW - lensInset
+            let clampedX = max(minX, min(dragLensX, maxX))
+            selectionView.frame = CGRect(x: clampedX, y: lensInset, width: lensW, height: lensH)
+        } else {
+            let target = lensFrame(for: selectedIndex)
+            if animated {
+                UIView.animate(withDuration: 0.4, delay: 0, usingSpringWithDamping: 0.78,
+                               initialSpringVelocity: 0, options: .beginFromCurrentState) {
+                    self.selectionView.frame = target
+                    self.selectionView.transform = .identity
+                }
+            } else {
+                selectionView.frame = target
+                selectionView.transform = .identity
+            }
         }
     }
 
-// MARK: - RosettaTabBar
+    // MARK: Gesture
 
-struct RosettaTabBar: View {
+    @objc private func handleGesture(_ g: TabSelectionGesture) {
+        let iw = itemW
+        switch g.state {
+        case .began:
+            isDragging = true
+            hoveredIndex = selectedIndex
+            // Start lens at selected tab position
+            dragStartLensX = innerInset + CGFloat(selectedIndex) * iw
+            dragLensX = dragStartLensX
+
+            // Lifted state: scale up selection indicator (Telegram isLifted)
+            UIView.animate(withDuration: 0.3, delay: 0, usingSpringWithDamping: 0.7,
+                           initialSpringVelocity: 0, options: .beginFromCurrentState) {
+                self.selectionView.transform = CGAffineTransform(scaleX: self.liftedScale, y: self.liftedScale)
+            }
+            updateSelectionFrame(animated: false)
+
+        case .changed:
+            let loc = g.location(in: self)
+            let translation = loc.x - g.initialLocation.x
+            dragLensX = dragStartLensX + translation
+
+            // Update hovered tab
+            let newHover = max(0, min(Int((loc.x - innerInset) / iw), tabs.count - 1))
+            if newHover != hoveredIndex {
+                hoveredIndex = newHover
+                // Smooth color transition (Telegram: colors blend when hovering)
+                UIView.animate(withDuration: 0.2) {
+                    for i in 0..<self.tabs.count {
+                        self.applyColor(to: i, selected: i == self.hoveredIndex, animated: false)
+                    }
+                }
+            }
+            updateSelectionFrame(animated: false)
+
+        case .ended:
+            isDragging = false
+            let target = tabs[hoveredIndex]
+            if hoveredIndex != selectedIndex {
+                iconViews[hoveredIndex].play(fromProgress: 0, toProgress: 1, loopMode: .playOnce)
+                selectedIndex = hoveredIndex
+                onTabSelected?(target)
+            } else {
+                // Spring back with un-lift
+                updateSelection(animated: true)
+            }
+
+        case .cancelled:
+            isDragging = false
+            updateSelection(animated: true)
+
+        default: break
+        }
+    }
+
+    // MARK: Selection Update
+
+    private func updateSelection(animated: Bool) {
+        for i in 0..<tabs.count {
+            applyColor(to: i, selected: i == selectedIndex, animated: animated)
+        }
+        updateSelectionFrame(animated: animated)
+    }
+
+    // MARK: Colors
+
+    private func applyColor(to index: Int, selected: Bool, animated: Bool) {
+        let iconColor = selected ? TabBarUIColors.selectedIcon : TabBarUIColors.icon
+        let txtColor = selected ? TabBarUIColors.selectedText : TabBarUIColors.text
+
+        let apply = {
+            self.labelViews[index].textColor = txtColor
+        }
+        if animated {
+            UIView.animate(withDuration: 0.25, animations: apply)
+        } else {
+            apply()
+        }
+
+        // Lottie color — cache hex to skip redundant setValueProvider
+        var r: CGFloat = 0, g: CGFloat = 0, b: CGFloat = 0, a: CGFloat = 0
+        iconColor.getRed(&r, green: &g, blue: &b, alpha: &a)
+        let hex = (UInt64(r * 255) << 24) | (UInt64(g * 255) << 16) | (UInt64(b * 255) << 8) | UInt64(a * 255)
+        guard appliedColorHex[index] != hex else { return }
+        appliedColorHex[index] = hex
+        let lc = LottieColor(r: Double(r), g: Double(g), b: Double(b), a: Double(a))
+        iconViews[index].setValueProvider(ColorValueProvider(lc), keypath: AnimationKeypath(keypath: "**.Color"))
+    }
+
+    // MARK: Badge
+
+    private func layoutBadge() {
+        guard let text = badgeText, !text.isEmpty else {
+            badgeBgView?.isHidden = true; return
+        }
+        let chatsIdx = RosettaTab.chats.interactionIndex
+        let iconFrame = iconViews[chatsIdx].frame
+
+        if badgeBgView == nil {
+            let bg = UIView(); bg.layer.masksToBounds = true; addSubview(bg); badgeBgView = bg
+            let lbl = UILabel(); lbl.font = .systemFont(ofSize: 13); lbl.textAlignment = .center
+            bg.addSubview(lbl); badgeLabel = lbl
+        }
+        guard let bg = badgeBgView, let lbl = badgeLabel else { return }
+        bg.isHidden = false
+        bg.backgroundColor = TabBarUIColors.badgeBg
+        lbl.textColor = TabBarUIColors.badgeText
+        lbl.text = text; lbl.sizeToFit()
+
+        let textW = lbl.frame.width
+        let bgW = text.count == 1 ? 18.0 : max(18.0, textW + 10)
+        let bgH: CGFloat = 18
+        bg.frame = CGRect(x: iconFrame.maxX - 6, y: iconFrame.minY - 1, width: bgW, height: bgH)
+        bg.layer.cornerRadius = bgH / 2
+        lbl.frame = CGRect(x: (bgW - textW) / 2, y: 0.5, width: textW, height: bgH - 1)
+    }
+
+    override func traitCollectionDidChange(_ prev: UITraitCollection?) {
+        super.traitCollectionDidChange(prev)
+        if traitCollection.hasDifferentColorAppearance(comparedTo: prev) {
+            appliedColorHex.removeAll()
+            updateSelection(animated: false)
+            layoutBadge()
+        }
+    }
+}
+
+extension RosettaTabBarUIView: UIGestureRecognizerDelegate {
+    func gestureRecognizer(_ g: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith other: UIGestureRecognizer) -> Bool { false }
+}
+
+// MARK: - SwiftUI Container
+
+struct RosettaTabBarContainer: View {
     let selectedTab: RosettaTab
     var onTabSelected: ((RosettaTab) -> Void)?
-    var onSwipeStateChanged: ((TabBarSwipeState?) -> Void)?
-
-    private let allTabs = RosettaTab.interactionOrder
-    private let tabCount = RosettaTab.interactionOrder.count
-
-    // Drag state
-    @State private var isDragging = false
-    @State private var dragFractional: CGFloat = 0
-    @State private var dragStartIndex: CGFloat = 0
-
-    // Measured tab geometry
-    @State private var tabWidths: [Int: CGFloat] = [:]
-    @State private var tabOrigins: [Int: CGFloat] = [:]
-
-    /// Cached badge text to avoid reading DialogRepository inside body
-    /// (which creates @Observable tracking and causes re-render storms during drag).
     @State private var cachedBadgeText: String?
-
+    private let barWidth: CGFloat = 90 * 3 + 8
-    private var effectiveFractional: CGFloat {
-        isDragging ? dragFractional : CGFloat(selectedTab.interactionIndex)
-    }
 
     var body: some View {
-        // Single pill with all tabs — same structure as iOS 26 system TabView
+        RosettaTabBarBridge(selectedTab: selectedTab, onTabSelected: onTabSelected, badgeText: cachedBadgeText)
-        HStack(spacing: 0) {
+            .frame(width: barWidth, height: 64)
-            ForEach(Array(allTabs.enumerated()), id: \.element) { index, tab in
-                tabContent(tab: tab, index: index)
-                    .background(
-                        GeometryReader { geo in
-                            Color.clear
-                                .preference(
-                                    key: TabWidthPreferenceKey.self,
-                                    value: [index: geo.size.width]
-                                )
-                                .preference(
-                                    key: TabOriginPreferenceKey.self,
-                                    value: [index: geo.frame(in: .named("tabBar")).minX]
-                                )
-                        }
-                    )
-            }
-        }
-        .padding(4)
-        .coordinateSpace(name: "tabBar")
-        .onPreferenceChange(TabWidthPreferenceKey.self) { tabWidths = $0 }
-        .onPreferenceChange(TabOriginPreferenceKey.self) { tabOrigins = $0 }
-        .background(alignment: .leading) {
-            selectionIndicator
-        }
-        .background {
-            // TelegramGlassCapsule handles both iOS 26+ (UIGlassEffect)
-            // and iOS < 26 (CABackdropLayer), with isUserInteractionEnabled = false.
-            TelegramGlassCapsule()
-        }
-        .contentShape(Capsule())
-        .gesture(dragGesture)
             .modifier(TabBarShadowModifier())
-        .padding(.horizontal, 25)
+            .padding(.bottom, 8)
-        .padding(.top, 16)
+            .onAppear { refreshBadges() }
-        .padding(.bottom, 12)
+            .onChange(of: selectedTab) { _, _ in refreshBadges() }
-        .onAppear { Task { @MainActor in refreshBadges() } }
-        .onChange(of: selectedTab) { _, _ in Task { @MainActor in refreshBadges() } }
-        // Observation-isolated badge refresh: checks dialogsVersion on every
-        // DialogRepository mutation. Only calls refreshBadges() when version changes.
             .overlay {
                 BadgeVersionObserver(onVersionChanged: refreshBadges)
-                .frame(width: 0, height: 0)
+                    .frame(width: 0, height: 0).allowsHitTesting(false)
-                .allowsHitTesting(false)
             }
     }
 
-    /// Reads DialogRepository outside the body's observation scope.
     private func refreshBadges() {
-        let repo = DialogRepository.shared
+        let unread = DialogRepository.shared.sortedDialogs
-        let unread = repo.sortedDialogs
+            .filter { !$0.isMuted }.reduce(0) { $0 + $1.unreadCount }
-            .filter { !$0.isMuted }
+        cachedBadgeText = unread <= 0 ? nil : (unread > 999 ? "\(unread / 1000)K" : "\(unread)")
-            .reduce(0) { $0 + $1.unreadCount }
-        if unread <= 0 {
-            cachedBadgeText = nil
-        } else {
-            cachedBadgeText = unread > 999 ? "\(unread / 1000)K" : "\(unread)"
     }
 }
 
-    // MARK: - Selection Indicator
+private struct RosettaTabBarBridge: UIViewRepresentable {
+    let selectedTab: RosettaTab
+    var onTabSelected: ((RosettaTab) -> Void)?
+    var badgeText: String?
 
-    @ViewBuilder
+    func makeUIView(context: Context) -> RosettaTabBarUIView {
-    private var selectionIndicator: some View {
+        let v = RosettaTabBarUIView(frame: .zero)
-        let frac = effectiveFractional
+        v.selectedIndex = selectedTab.interactionIndex
-        let nearestIdx = Int(frac.rounded()).clamped(to: 0...(tabCount - 1))
+        v.onTabSelected = onTabSelected; v.badgeText = badgeText; return v
-        let width = tabWidths[nearestIdx] ?? 80
-        let xOffset = interpolatedOrigin(for: frac)
-
-        Group {
-            if #available(iOS 26.0, *) {
-                // iOS 26+ — native liquid glass
-                Capsule().fill(.clear)
-                    .glassEffect(.regular, in: .capsule)
-                    .allowsHitTesting(false)
-                    .frame(width: width)
-                    .offset(x: xOffset)
-            } else {
-                // iOS < 26 — thin frosted glass
-                // +2 centers the narrowed (width-4) pill within the tab
-                Capsule().fill(.thinMaterial)
-                    .frame(width: width - 4)
-                    .padding(.vertical, 4)
-                    .offset(x: xOffset + 2)
     }
-        }
+    func updateUIView(_ v: RosettaTabBarUIView, context: Context) {
-        .animation(
+        let idx = selectedTab.interactionIndex
-            isDragging ? nil : .spring(response: 0.34, dampingFraction: 0.82),
+        if v.selectedIndex != idx { v.selectedIndex = idx }
-            value: frac
+        v.onTabSelected = onTabSelected; v.badgeText = badgeText
-        )
-    }
-
-    private func interpolatedOrigin(for fractional: CGFloat) -> CGFloat {
-        let lower = Int(fractional).clamped(to: 0...(tabCount - 1))
-        let upper = (lower + 1).clamped(to: 0...(tabCount - 1))
-        let t = fractional - CGFloat(lower)
-        let lowerX = tabOrigins[lower] ?? 0
-        let upperX = tabOrigins[upper] ?? lowerX
-        return lowerX + (upperX - lowerX) * t
-    }
-
-    // MARK: - Drag Gesture
-
-    private var dragGesture: some Gesture {
-        DragGesture(minimumDistance: 8)
-            .onChanged { value in
-                if !isDragging {
-                    isDragging = true
-                    dragStartIndex = CGFloat(selectedTab.interactionIndex)
-                }
-
-                let avgTabWidth = totalTabWidth / CGFloat(tabCount)
-                guard avgTabWidth > 0 else { return }
-                let delta = value.translation.width / avgTabWidth
-                let newFrac = (dragStartIndex - delta)
-                    .clamped(to: 0...CGFloat(tabCount - 1))
-
-                dragFractional = newFrac
-
-                let nearestIdx = Int(newFrac.rounded()).clamped(to: 0...(tabCount - 1))
-                onSwipeStateChanged?(TabBarSwipeState(
-                    fromTab: selectedTab,
-                    hoveredTab: allTabs[nearestIdx],
-                    fractionalIndex: newFrac
-                ))
-            }
-            .onEnded { value in
-                let avgTabWidth = totalTabWidth / CGFloat(tabCount)
-                let velocity = avgTabWidth > 0 ? value.predictedEndTranslation.width / avgTabWidth : 0
-                let projected = dragFractional - velocity * 0.15
-                let snappedIdx = Int(projected.rounded()).clamped(to: 0...(tabCount - 1))
-                let targetTab = allTabs[snappedIdx]
-
-                isDragging = false
-                dragFractional = CGFloat(snappedIdx)
-
-                UIImpactFeedbackGenerator(style: .light).impactOccurred()
-                onTabSelected?(targetTab)
-                onSwipeStateChanged?(nil)
     }
 }
 
-    private var totalTabWidth: CGFloat {
-        tabWidths.values.reduce(0, +)
-    }
-
-    // MARK: - Tab Content
-
-    private func tabContent(tab: RosettaTab, index: Int) -> some View {
-        let frac = effectiveFractional
-        let distance = abs(frac - CGFloat(index))
-        let blend = (1 - distance).clamped(to: 0...1)
-        let tint = tintColor(blend: blend)
-        let isEffectivelySelected = blend > 0.5
-        let badge: String? = (tab == .chats) ? cachedBadgeText : nil
-
-        return Button {
-            guard !isDragging else { return }
-            UIImpactFeedbackGenerator(style: .light).impactOccurred()
-            onTabSelected?(tab)
-        } label: {
-            VStack(spacing: 2) {
-                ZStack(alignment: .topTrailing) {
-                    Image(systemName: isEffectivelySelected ? tab.selectedIcon : tab.icon)
-                        .font(.system(size: 22, weight: .regular))
-                        .foregroundStyle(tint)
-                        .frame(height: 28)
-
-                    if let badge {
-                        Text(badge)
-                            .font(.system(size: 10, weight: .bold))
-                            .foregroundStyle(.white)
-                            .padding(.horizontal, badge.count > 2 ? 4 : 0)
-                            .frame(minWidth: 18, minHeight: 18)
-                            .background(Capsule().fill(RosettaColors.error))
-                            .offset(x: 10, y: -4)
-                    }
-                }
-
-                Text(tab.label)
-                    .font(.system(size: 10, weight: isEffectivelySelected ? .bold : .medium))
-                    .foregroundStyle(tint)
-            }
-            .frame(minWidth: 66, maxWidth: .infinity)
-            .padding(.vertical, 6)
-        }
-        .buttonStyle(.plain)
-        .accessibilityLabel(tab.label)
-        .accessibilityAddTraits(isEffectivelySelected ? .isSelected : [])
-    }
-
-    // MARK: - Color Interpolation
-
-    @Environment(\.colorScheme) private var colorScheme
-
-    private static let selectedRGBA: (CGFloat, CGFloat, CGFloat, CGFloat) = {
-        var r: CGFloat = 0, g: CGFloat = 0, b: CGFloat = 0, a: CGFloat = 0
-        UIColor(TabBarColors.selectedTint).getRed(&r, green: &g, blue: &b, alpha: &a)
-        return (r, g, b, a)
-    }()
-
-    private func tintColor(blend: CGFloat) -> Color {
-        let t = blend.clamped(to: 0...1)
-        // Unselected tint depends on theme — compute at render time
-        let isDark = colorScheme == .dark
-        let fr: CGFloat = isDark ? 1.0 : 0.235
-        let fg: CGFloat = isDark ? 1.0 : 0.235
-        let fb: CGFloat = isDark ? 1.0 : 0.263
-        let fa: CGFloat = isDark ? 1.0 : 0.6
-        let (tr, tg, tb, ta) = Self.selectedRGBA
-        return Color(
-            red: fr + (tr - fr) * t,
-            green: fg + (tg - fg) * t,
-            blue: fb + (tb - fb) * t,
-            opacity: fa + (ta - fa) * t
-        )
-    }
-}
-
-// MARK: - Shadow (iOS < 26 only)
-
-/// Glass has built-in depth on iOS 26+, so shadow is only needed on older versions.
 private struct TabBarShadowModifier: ViewModifier {
     func body(content: Content) -> some View {
-        if #available(iOS 26.0, *) {
+        if #available(iOS 26.0, *) { content }
-            content
+        else { content.shadow(color: Color.black.opacity(0.12), radius: 20, y: 8) }
-        } else {
-            content
-                .shadow(color: Color.black.opacity(0.12), radius: 20, y: 8)
-        }
-    }
-}
-
-// MARK: - Comparable Clamping
-
-private extension Comparable {
-    func clamped(to range: ClosedRange<Self>) -> Self {
-        min(max(self, range.lowerBound), range.upperBound)
     }
 }
 
-// MARK: - Preview
-
-// MARK: - Badge Version Observer (observation-isolated)
-
-/// Observes DialogRepository in its own scope, debounced badge refresh.
-/// Body re-evaluates on any dialog mutation (observation tracking via `dialogs` read).
-/// Debounces at 500ms to avoid CPU spikes from rapid mutations.
 private struct BadgeVersionObserver: View {
     var onVersionChanged: () -> Void
     @State private var refreshTask: Task<Void, Never>?
     @State private var lastUnread: Int = -1
-
     var body: some View {
-        // O(n) reduce — but only on THIS view's body (isolated scope).
-        // Not called during RosettaTabBar drag/animation.
         let unread = DialogRepository.shared.dialogs.values
             .reduce(0) { $0 + ($1.isMuted ? 0 : $1.unreadCount) }
         Color.clear
-            .onChange(of: unread) { _, newValue in
+            .onChange(of: unread) { _, v in
-                guard newValue != lastUnread else { return }
+                guard v != lastUnread else { return }; lastUnread = v
-                lastUnread = newValue
-                // Debounce to avoid rapid refreshes during sync
                 refreshTask?.cancel()
                 refreshTask = Task { @MainActor in
                     try? await Task.sleep(for: .milliseconds(200))
-                    guard !Task.isCancelled else { return }
+                    guard !Task.isCancelled else { return }; onVersionChanged()
-                    onVersionChanged()
                 }
             }
-            .onAppear {
+            .onAppear { lastUnread = unread; onVersionChanged() }
-                lastUnread = unread
-                onVersionChanged()
-            }
-    }
-}
-
-#Preview {
-    ZStack(alignment: .bottom) {
-        Color.black.ignoresSafeArea()
-        RosettaTabBar(selectedTab: .chats)
     }
 }

Rosetta/DesignSystem/Components/TabBarLottieIcon.swift

@@ -0,0 +1,91 @@
+import SwiftUI
+import Lottie
+
+/// Telegram-parity tab bar icon using Lottie animations.
+///
+/// Behaviour matches `TabBarComponent.ItemComponent` in Telegram-iOS:
+/// - Displays the **last frame** at rest (`startingPosition: .end`)
+/// - Plays **once** from start to end when the tab becomes selected
+/// - Tinted with a single color via `ColorValueProvider` (Telegram: `setOverlayColor`)
+struct TabBarLottieIcon: UIViewRepresentable {
+    let animationName: String
+    let color: Color
+    /// Incremented each time the tab becomes selected — triggers a play.
+    let playTrigger: Int
+
+    func makeCoordinator() -> Coordinator { Coordinator() }
+
+    final class Coordinator {
+        var lastTrigger: Int = 0
+        var currentName: String = ""
+        var lastColorHex: UInt64 = .max // cache to skip redundant setValueProvider
+    }
+
+    func makeUIView(context: Context) -> LottieAnimationView {
+        let view = LottieAnimationView()
+        view.contentMode = .scaleAspectFit
+        view.isUserInteractionEnabled = false
+        view.backgroundBehavior = .pauseAndRestore
+        // CRITICAL: allow SwiftUI .frame() to constrain the view.
+        // Without this, LottieAnimationView reports intrinsicContentSize 512×512
+        // (from the JSON canvas) and SwiftUI cannot shrink it.
+        view.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
+        view.setContentCompressionResistancePriority(.defaultLow, for: .vertical)
+        view.setContentHuggingPriority(.required, for: .horizontal)
+        view.setContentHuggingPriority(.required, for: .vertical)
+        view.clipsToBounds = true
+        loadAnimation(into: view, context: context)
+        return view
+    }
+
+    func updateUIView(_ uiView: LottieAnimationView, context: Context) {
+        if context.coordinator.currentName != animationName {
+            loadAnimation(into: uiView, context: context)
+        }
+
+        applyColorIfNeeded(uiView, coordinator: context.coordinator)
+
+        if context.coordinator.lastTrigger != playTrigger {
+            context.coordinator.lastTrigger = playTrigger
+            uiView.play(fromProgress: 0, toProgress: 1, loopMode: .playOnce)
+        }
+    }
+
+    private func loadAnimation(into view: LottieAnimationView, context: Context) {
+        if let cached = LottieAnimationCache.shared.animation(named: animationName) {
+            view.animation = cached
+        } else {
+            view.animation = LottieAnimation.named(animationName)
+        }
+        view.loopMode = .playOnce
+        view.currentProgress = 1.0
+        context.coordinator.currentName = animationName
+        context.coordinator.lastTrigger = playTrigger
+        context.coordinator.lastColorHex = .max // force color apply
+        applyColorIfNeeded(view, coordinator: context.coordinator)
+    }
+
+    private func applyColorIfNeeded(_ view: LottieAnimationView, coordinator: Coordinator) {
+        let hex = colorToHex(color)
+        guard hex != coordinator.lastColorHex else { return }
+        coordinator.lastColorHex = hex
+
+        var r: CGFloat = 0, g: CGFloat = 0, b: CGFloat = 0, a: CGFloat = 0
+        UIColor(color).getRed(&r, green: &g, blue: &b, alpha: &a)
+        let lottieColor = LottieColor(r: Double(r), g: Double(g), b: Double(b), a: Double(a))
+        view.setValueProvider(
+            ColorValueProvider(lottieColor),
+            keypath: AnimationKeypath(keypath: "**.Color")
+        )
+    }
+
+    private func colorToHex(_ c: Color) -> UInt64 {
+        var r: CGFloat = 0, g: CGFloat = 0, b: CGFloat = 0, a: CGFloat = 0
+        UIColor(c).getRed(&r, green: &g, blue: &b, alpha: &a)
+        let ri = UInt64(r * 255) << 24
+        let gi = UInt64(g * 255) << 16
+        let bi = UInt64(b * 255) << 8
+        let ai = UInt64(a * 255)
+        return ri | gi | bi | ai
+    }
+}

Rosetta/DesignSystem/Components/TelegramGlassView.swift

@@ -20,10 +20,11 @@ extension EnvironmentValues {
     }
 }
 
-// MARK: - Telegram Glass (CABackdropLayer + CAFilter)
+// MARK: - Telegram Glass (CABackdropLayer + CAFilter + Mesh + Foreground Image)
 //
 // Exact port of Telegram iOS LegacyGlassView + GlassBackgroundView foreground.
-// iOS < 26: CABackdropLayer with gaussianBlur radius 2.0 + dark foreground overlay.
+// iOS < 26: CABackdropLayer with gaussianBlur + colorMatrix + mesh displacement
+//           + generated foreground image with shadows, gradient border, blend modes.
 // iOS 26+: native UIGlassEffect(style: .regular).
 
 /// SwiftUI wrapper for Telegram-style glass background.
@@ -99,11 +100,20 @@ final class TelegramGlassUIView: UIView {
     // Layers
     private var backdropLayer: CALayer?
     private let clippingContainer = CALayer()
-    private let foregroundLayer = CALayer()
+
+    // Foreground + Shadow image views (legacy glass)
+    private var foregroundImageView: UIImageView?
+    private var shadowImageView: UIImageView?
+
+    // Track params for image regeneration
+    private var lastImageCornerRadius: CGFloat = -1
+    private var lastImageIsDark: Bool?
 
     // iOS 26+ native glass
     private var nativeGlassView: UIVisualEffectView?
 
+    private static let shadowInset: CGFloat = 32.0
+
     override init(frame: CGRect) {
         super.init(frame: frame)
         clipsToBounds = false
@@ -143,40 +153,56 @@ final class TelegramGlassUIView: UIView {
         nativeGlassView = glassView
     }
 
-    // MARK: - iOS < 26 (CABackdropLayer — Telegram LegacyGlassView)
+    // MARK: - iOS < 26 (CABackdropLayer + ColorMatrix + Mesh — Telegram parity)
 
     private func setupLegacyGlass() {
-        // Clipping container — holds backdrop + foreground, clips to pill shape.
+        // Shadow image view — positioned behind glass with negative inset
-        // Border is added to main layer OUTSIDE the clip so it's fully visible.
+        let shadow = UIImageView()
+        shadow.isUserInteractionEnabled = false
+        addSubview(shadow)
+        shadowImageView = shadow
+
+        // Clipping container — holds backdrop, clips to pill shape.
+        // Telegram uses .circular cornerCurve for LegacyGlassView.
         clippingContainer.masksToBounds = true
-        clippingContainer.cornerCurve = .continuous
+        clippingContainer.cornerCurve = .circular
         layer.addSublayer(clippingContainer)
 
-        // 1. CABackdropLayer — blurs content behind this view
+        // 1. CABackdropLayer — blurs + tones content behind this view
-        if let backdrop = Self.createBackdropLayer() {
+        if let backdrop = BackdropLayerHelper.createBackdropLayer() {
+            backdrop.delegate = BackdropLayerDelegate.shared
             backdrop.rasterizationScale = 1.0
-            Self.setBackdropScale(backdrop, scale: 1.0)
+            BackdropLayerHelper.setScale(backdrop, scale: 1.0)
 
-            // gaussianBlur filter with radius 2.0 (Telegram .normal style)
+            // Blur + Color Matrix filters (Telegram .normal style)
-            if let blurFilter = Self.makeBlurFilter() {
+            if let blurFilter = CALayer.blurFilter(),
+               let colorMatrixFilter = CALayer.colorMatrixFilter() {
                 blurFilter.setValue(2.0 as NSNumber, forKey: "inputRadius")
-                backdrop.filters = [blurFilter]
+
+                var matrix: [Float32] = [
+                    2.6705, -1.1087999, -0.1117, 0.0, 0.049999997,
+                    -0.3295, 1.8914, -0.111899994, 0.0, 0.049999997,
+                    -0.3297, -1.1084, 2.8881, 0.0, 0.049999997,
+                    0.0, 0.0, 0.0, 1.0, 0.0
+                ]
+                colorMatrixFilter.setValue(
+                    NSValue(bytes: &matrix, objCType: "{CAColorMatrix=ffffffffffffffffffff}"),
+                    forKey: "inputColorMatrix"
+                )
+                colorMatrixFilter.setValue(true as NSNumber, forKey: "inputBackdropAware")
+
+                backdrop.filters = [colorMatrixFilter, blurFilter]
             }
 
             clippingContainer.addSublayer(backdrop)
             self.backdropLayer = backdrop
         }
 
-        // 2. Foreground — adaptive semi-transparent fill (resolved in didMoveToWindow)
+        // 2. Foreground image — generated overlay with fill, shadows, gradient border
-        foregroundLayer.backgroundColor = UIColor(white: 0.11, alpha: 0.85).cgColor
+        let fg = UIImageView()
-        clippingContainer.addSublayer(foregroundLayer)
+        fg.isUserInteractionEnabled = false
-
+        addSubview(fg)
-        // 3. Border — on main layer via CALayer border properties.
+        foregroundImageView = fg
-        // Using layer.borderWidth + cornerCurve ensures the border follows
-        // the same .continuous curve as the clipping container fill.
-        layer.borderWidth = 0.5
-        layer.borderColor = UIColor(red: 0x38/255.0, green: 0x38/255.0, blue: 0x38/255.0, alpha: 1.0).cgColor
-        layer.cornerCurve = .continuous
     }
 
     // MARK: - Layout
@@ -202,7 +228,6 @@ final class TelegramGlassUIView: UIView {
             glassView.layer.cornerRadius = radius
         } else {
             clippingContainer.cornerRadius = radius
-            layer.cornerRadius = radius
         }
     }
 
@@ -213,7 +238,6 @@ final class TelegramGlassUIView: UIView {
 
         let cornerRadius: CGFloat
         if let fixed = fixedCornerRadius {
-            // Cap at half-height to guarantee capsule shape when radius >= height/2.
             cornerRadius = min(fixed, bounds.height / 2)
         } else if isCircle {
             cornerRadius = min(bounds.width, bounds.height) / 2
@@ -223,116 +247,115 @@ final class TelegramGlassUIView: UIView {
 
         if #available(iOS 26.0, *), let glassView = nativeGlassView {
             glassView.frame = bounds
-            // Use cornerRadius directly — simpler and works in current iOS 26 betas.
-            // CAShapeLayer mask was unreliable with UIGlassEffect in some beta versions.
             glassView.layer.cornerRadius = cornerRadius
             return
         }
 
-        // Legacy layout — clippingContainer.masksToBounds clips all children,
+        // Legacy layout
-        // so foregroundLayer needs no cornerRadius (avoids double-rounding artifacts).
         clippingContainer.frame = bounds
         clippingContainer.cornerRadius = cornerRadius
         backdropLayer?.frame = bounds
-        foregroundLayer.frame = bounds
 
-        // Border follows .continuous curve via main layer's cornerRadius.
+        // Shadow image view — extends beyond bounds
-        // clipsToBounds is false, so this only affects visual border — not child clipping.
+        let si = Self.shadowInset
-        layer.cornerRadius = cornerRadius
+        shadowImageView?.frame = bounds.insetBy(dx: -si, dy: -si)
+
+        // Foreground image view — same as shadow (image includes inset)
+        foregroundImageView?.frame = bounds.insetBy(dx: -si, dy: -si)
+
+        // Apply mesh displacement (iOS 17+, capable devices)
+        if #available(iOS 17.0, *), DeviceCapability.isGraphicallyCapable {
+            let size = CGSize(width: max(1.0, bounds.width), height: max(1.0, bounds.height))
+            let cr = min(min(size.width, size.height) * 0.5, cornerRadius)
+            let displacementMagnitudePoints: CGFloat = 20.0
+            let displacementMagnitudeU = displacementMagnitudePoints / size.width
+            let displacementMagnitudeV = displacementMagnitudePoints / size.height
+
+            let mesh = generateGlassMesh(
+                size: size,
+                cornerRadius: cr,
+                edgeDistance: min(12.0, cr),
+                displacementMagnitudeU: displacementMagnitudeU,
+                displacementMagnitudeV: displacementMagnitudeV,
+                cornerResolution: 12,
+                outerEdgeDistance: 2.0,
+                bezier: DisplacementBezier(
+                    x1: 0.816137566137566,
+                    y1: 0.20502645502645533,
+                    x2: 0.5806878306878306,
+                    y2: 0.873015873015873
+                )
+            )
+
+            if let meshValue = mesh.makeValue() {
+                backdropLayer?.setValue(meshValue, forKey: "meshTransform")
+            }
+        }
+
+        // Regenerate foreground/shadow images if needed
+        regenerateGlassImages(cornerRadius: cornerRadius)
+    }
+
+    // MARK: - Image Generation
+
+    private func regenerateGlassImages(cornerRadius: CGFloat) {
+        let isDark = traitCollection.userInterfaceStyle == .dark
+
+        // Skip if params unchanged
+        if cornerRadius == lastImageCornerRadius && isDark == lastImageIsDark {
+            return
+        }
+        lastImageCornerRadius = cornerRadius
+        lastImageIsDark = isDark
+
+        let inset = Self.shadowInset
+
+        // Fill color (Telegram parity)
+        let fillColor: UIColor
+        if isDark {
+            fillColor = UIColor(white: 1.0, alpha: 1.0).mixedWith(.black, alpha: 1.0 - 0.11).withAlphaComponent(0.85)
+        } else {
+            fillColor = UIColor(white: 1.0, alpha: 0.7)
+        }
+
+        // Foreground image
+        let fgImage = GlassImageGeneration.generateLegacyGlassImage(
+            size: CGSize(width: cornerRadius * 2, height: cornerRadius * 2),
+            inset: inset,
+            borderWidthFactor: 1.0,
+            isDark: isDark,
+            fillColor: fillColor
+        )
+        foregroundImageView?.image = fgImage
+
+        // Shadow image
+        shadowImageView?.image = GlassImageGeneration.generateShadowImage(cornerRadius: cornerRadius)
     }
 
     // MARK: - Adaptive Colors for Legacy Glass
 
-    private func resolvedForegroundColor() -> CGColor {
-        let isDark = traitCollection.userInterfaceStyle == .dark
-        return isDark
-            ? UIColor(white: 0.11, alpha: 0.85).cgColor
-            : UIColor(white: 0.95, alpha: 0.85).cgColor
-    }
-
-    private func resolvedBorderColor() -> CGColor {
-        let isDark = traitCollection.userInterfaceStyle == .dark
-        return isDark
-            ? UIColor(red: 0x38/255.0, green: 0x38/255.0, blue: 0x38/255.0, alpha: 1.0).cgColor
-            : UIColor(white: 0.0, alpha: 0.08).cgColor
-    }
-
-    private func updateLegacyColors() {
-        guard nativeGlassView == nil else { return }
-        foregroundLayer.backgroundColor = resolvedForegroundColor()
-        layer.borderColor = resolvedBorderColor()
-    }
-
     override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
         super.traitCollectionDidChange(previousTraitCollection)
         guard traitCollection.userInterfaceStyle != previousTraitCollection?.userInterfaceStyle else { return }
-        updateLegacyColors()
+        // Force image regeneration on theme change
+        lastImageIsDark = nil
+        setNeedsLayout()
     }
 
     override func didMoveToWindow() {
         super.didMoveToWindow()
-        // Resolve colors once view is in a window and has valid traitCollection
+        // Resolve images once view is in a window and has valid traitCollection
-        updateLegacyColors()
+        if nativeGlassView == nil {
+            lastImageIsDark = nil
+            setNeedsLayout()
+        }
     }
 
-    // MARK: - Shadow (drawn as separate image — Telegram parity)
+    // MARK: - Shadow (static helper — kept for external callers)
 
     /// Call from parent to add Telegram-exact shadow.
     /// Telegram: blur 40, color black 4%, offset (0,1), inset 32pt.
     static func makeShadowImage(cornerRadius: CGFloat) -> UIImage? {
-        let inset: CGFloat = 32
+        return GlassImageGeneration.generateShadowImage(cornerRadius: cornerRadius)
-        let innerInset: CGFloat = 0.5
-        let diameter = cornerRadius * 2
-        let totalSize = CGSize(width: inset * 2 + diameter, height: inset * 2 + diameter)
-
-        let image = UIGraphicsImageRenderer(size: totalSize).image { ctx in
-            let context = ctx.cgContext
-            context.clear(CGRect(origin: .zero, size: totalSize))
-
-            context.setFillColor(UIColor.black.cgColor)
-            context.setShadow(
-                offset: CGSize(width: 0, height: 1),
-                blur: 40.0,
-                color: UIColor(white: 0.0, alpha: 0.04).cgColor
-            )
-            let ellipseRect = CGRect(
-                x: inset + innerInset,
-                y: inset + innerInset,
-                width: totalSize.width - (inset + innerInset) * 2,
-                height: totalSize.height - (inset + innerInset) * 2
-            )
-            context.fillEllipse(in: ellipseRect)
-
-            // Punch out the center (shadow only, no fill)
-            context.setFillColor(UIColor.clear.cgColor)
-            context.setBlendMode(.copy)
-            context.fillEllipse(in: ellipseRect)
-        }
-        return image.stretchableImage(
-            withLeftCapWidth: Int(inset + cornerRadius),
-            topCapHeight: Int(inset + cornerRadius)
-        )
-    }
-
-    // MARK: - Private API Helpers (same approach as Telegram)
-
-    private static func createBackdropLayer() -> CALayer? {
-        let className = ["CA", "Backdrop", "Layer"].joined()
-        guard let cls = NSClassFromString(className) as? CALayer.Type else { return nil }
-        return cls.init()
-    }
-
-    private static func setBackdropScale(_ layer: CALayer, scale: Double) {
-        let sel = NSSelectorFromString("setScale:")
-        guard layer.responds(to: sel) else { return }
-        layer.perform(sel, with: NSNumber(value: scale))
-    }
-
-    private static func makeBlurFilter() -> NSObject? {
-        let className = ["CA", "Filter"].joined()
-        guard let cls = NSClassFromString(className) as? NSObject.Type else { return nil }
-        let sel = NSSelectorFromString("filterWithName:")
-        guard cls.responds(to: sel) else { return nil }
-        return cls.perform(sel, with: "gaussianBlur")?.takeUnretainedValue() as? NSObject
     }
 }

Rosetta/Features/Chats/ChatDetail/AttachmentPanelView.swift

@@ -448,7 +448,8 @@ struct AttachmentPanelView: View {
     private var legacySelectionIndicator: some View {
         let width = tabWidths[selectedTab] ?? 0
         let xOffset = tabOrigins[selectedTab] ?? 0
-        return Capsule().fill(.thinMaterial)
+        return Capsule().fill(.clear)
+            .background { TelegramGlassCapsule() }
             .frame(width: max(0, width - 4))
             .padding(.vertical, 4)
             .offset(x: xOffset + 2)

Rosetta/Features/Chats/ChatDetail/ChatDetailView.swift

@@ -620,16 +620,16 @@ private extension ChatDetailView {
     @ToolbarContentBuilder
     var chatDetailToolbar: some ToolbarContent {
         if isMultiSelectMode {
-            // Selection mode toolbar (Telegram parity: Clear Chat | N Selected | Cancel)
+            // Selection mode toolbar (Telegram parity: all 3 items in glass capsules)
             ToolbarItem(placement: .navigationBarLeading) {
                 Button {
                     showClearChatConfirmation = true
                 } label: {
                     Text("Clear Chat")
-                        .font(.system(size: 17, weight: .regular))
+                        .font(.system(size: 15, weight: .regular))
                         .foregroundStyle(RosettaColors.Adaptive.text)
-                        .padding(.horizontal, 12)
+                        .padding(.horizontal, 10)
-                        .frame(height: 36)
+                        .frame(height: 32)
                         .background {
                             glass(shape: .capsule, strokeOpacity: 0.22, strokeColor: RosettaColors.Adaptive.text)
                         }
@@ -639,10 +639,10 @@ private extension ChatDetailView {
 
             ToolbarItem(placement: .principal) {
                 Text("\(selectedMessageIds.count) Selected")
-                    .font(.system(size: 17, weight: .semibold))
+                    .font(.system(size: 15, weight: .semibold))
                     .foregroundStyle(RosettaColors.Adaptive.text)
-                    .padding(.horizontal, 16)
+                    .padding(.horizontal, 12)
-                    .frame(height: 36)
+                    .frame(height: 32)
                     .background {
                         glass(shape: .capsule, strokeOpacity: 0.22, strokeColor: RosettaColors.Adaptive.text)
                     }
@@ -654,8 +654,13 @@ private extension ChatDetailView {
                     selectedMessageIds.removeAll()
                 } label: {
                     Text("Cancel")
-                        .font(.system(size: 17, weight: .regular))
+                        .font(.system(size: 15, weight: .regular))
                         .foregroundStyle(RosettaColors.Adaptive.text)
+                        .padding(.horizontal, 10)
+                        .frame(height: 32)
+                        .background {
+                            glass(shape: .capsule, strokeOpacity: 0.22, strokeColor: RosettaColors.Adaptive.text)
+                        }
                 }
                 .buttonStyle(.plain)
             }
@@ -844,55 +849,55 @@ private extension ChatDetailView {
     @ViewBuilder
     private var selectionActionBar: some View {
         HStack(spacing: 0) {
-            // Delete
+            // Delete (Telegram: GlassButtonView + MessageSelectionTrash)
             Button {
                 deleteSelectedMessages()
             } label: {
                 Image(systemName: "trash")
-                    .font(.system(size: 20))
+                    .font(.system(size: 19, weight: .regular))
-                    .foregroundStyle(selectedMessageIds.isEmpty ? RosettaColors.Adaptive.text.opacity(0.5) : .red)
+                    .foregroundStyle(RosettaColors.Adaptive.text)
                     .frame(width: 40, height: 40)
-                    .background { glass(shape: .circle, strokeOpacity: 0.18, strokeColor: RosettaColors.Adaptive.text) }
+                    .background { TelegramGlassCircle() }
+                    .opacity(selectedMessageIds.isEmpty ? 0.5 : 1.0)
             }
             .buttonStyle(.plain)
             .disabled(selectedMessageIds.isEmpty)
 
             Spacer()
 
-            // Share
+            // Share (Telegram: GlassButtonView + MessageSelectionAction)
             Button {
                 shareSelectedMessages()
             } label: {
                 Image(systemName: "square.and.arrow.up")
-                    .font(.system(size: 20))
+                    .font(.system(size: 19, weight: .regular))
-                    .foregroundStyle(selectedMessageIds.isEmpty ? RosettaColors.Adaptive.text.opacity(0.5) : RosettaColors.Adaptive.text)
+                    .foregroundStyle(RosettaColors.Adaptive.text)
                     .frame(width: 40, height: 40)
-                    .background { glass(shape: .circle, strokeOpacity: 0.18, strokeColor: RosettaColors.Adaptive.text) }
+                    .background { TelegramGlassCircle() }
+                    .opacity(selectedMessageIds.isEmpty ? 0.5 : 1.0)
             }
             .buttonStyle(.plain)
             .disabled(selectedMessageIds.isEmpty)
 
             Spacer()
 
-            // Forward
+            // Forward (Telegram: GlassButtonView + MessageSelectionForward)
             Button {
                 forwardSelectedMessages()
             } label: {
                 Image(systemName: "arrowshape.turn.up.right")
-                    .font(.system(size: 20))
+                    .font(.system(size: 19, weight: .regular))
-                    .foregroundStyle(selectedMessageIds.isEmpty ? RosettaColors.Adaptive.text.opacity(0.5) : RosettaColors.Adaptive.text)
+                    .foregroundStyle(RosettaColors.Adaptive.text)
                     .frame(width: 40, height: 40)
-                    .background { glass(shape: .circle, strokeOpacity: 0.18, strokeColor: RosettaColors.Adaptive.text) }
+                    .background { TelegramGlassCircle() }
+                    .opacity(selectedMessageIds.isEmpty ? 0.5 : 1.0)
             }
             .buttonStyle(.plain)
             .disabled(selectedMessageIds.isEmpty)
         }
-        .padding(.horizontal, 26) // Telegram: 8 base + 18 safe area inset
+        .padding(.horizontal, 26)
         .padding(.vertical, 12)
         .padding(.bottom, 16) // safe area
-        .background {
-            glass(shape: .rounded(0), strokeOpacity: 0)
-        }
     }
 
     private func deleteSelectedMessages() {

Rosetta/Features/Chats/ChatDetail/NativeMessageCell.swift

@@ -229,7 +229,7 @@ final class NativeMessageCell: UICollectionViewCell {
     private let selectionCheckContainer = UIView()
     private let selectionCheckBorder = CAShapeLayer()
     private let selectionCheckFill = CAShapeLayer()
-    private let selectionCheckmarkView = UIImageView()
+    private let selectionCheckmarkLayer = CAShapeLayer()
 
     // Swipe-to-reply
     private let replyCircleView = UIView()
@@ -606,15 +606,16 @@ final class NativeMessageCell: UICollectionViewCell {
         selectionCheckContainer.isHidden = true
         selectionCheckContainer.isUserInteractionEnabled = false
 
-        let checkPath = UIBezierPath(ovalIn: CGRect(x: 0, y: 0, width: 28, height: 28))
+        // Telegram CheckNode: overlay style — white border, shadow, CG checkmark
-        selectionCheckBorder.path = checkPath.cgPath
+        let inset: CGFloat = 2.0 - (1.0 / UIScreen.main.scale) // Telegram: 2.0 - UIScreenPixel
+        let borderWidth: CGFloat = 1.0 + (1.0 / UIScreen.main.scale) // Telegram: 1.0 + UIScreenPixel
+        let borderRect = CGRect(x: 0, y: 0, width: 28, height: 28).insetBy(dx: inset, dy: inset)
+        let checkCirclePath = UIBezierPath(ovalIn: CGRect(x: 0, y: 0, width: 28, height: 28))
+
+        selectionCheckBorder.path = UIBezierPath(ovalIn: borderRect).cgPath
         selectionCheckBorder.fillColor = UIColor.clear.cgColor
-        selectionCheckBorder.strokeColor = UIColor { traits in
+        selectionCheckBorder.strokeColor = UIColor.white.cgColor // Telegram: pure white for overlay
-            traits.userInterfaceStyle == .dark
+        selectionCheckBorder.lineWidth = borderWidth
-                ? UIColor.white.withAlphaComponent(0.5)
-                : UIColor.black.withAlphaComponent(0.3)
-        }.cgColor
-        selectionCheckBorder.lineWidth = 1.5  // Telegram: 1.0 + UIScreenPixel
         selectionCheckContainer.layer.addSublayer(selectionCheckBorder)
 
         // Telegram CheckNode overlay shadow
@@ -623,18 +624,30 @@ final class NativeMessageCell: UICollectionViewCell {
         selectionCheckContainer.layer.shadowRadius = 2.5
         selectionCheckContainer.layer.shadowOffset = .zero
 
-        selectionCheckFill.path = checkPath.cgPath
+        selectionCheckFill.path = checkCirclePath.cgPath
-        selectionCheckFill.fillColor = UIColor(red: 0.14, green: 0.54, blue: 0.90, alpha: 1).cgColor // #248AE6
+        selectionCheckFill.fillColor = UIColor(red: 0.14, green: 0.54, blue: 0.90, alpha: 1).cgColor // #248AE6 — Rosetta primary blue
         selectionCheckFill.isHidden = true
         selectionCheckContainer.layer.addSublayer(selectionCheckFill)
 
-        let checkConfig = UIImage.SymbolConfiguration(pointSize: 14, weight: .bold)
+        // Telegram CheckNode: CG-drawn checkmark (1.5pt, round cap/join)
-        selectionCheckmarkView.image = UIImage(systemName: "checkmark", withConfiguration: checkConfig)
+        let s = (28.0 - inset * 2) / 18.0 // Telegram scale factor
-        selectionCheckmarkView.tintColor = .white
+        let cx = 14.0, cy = 14.0
-        selectionCheckmarkView.contentMode = .center
+        let startX = cx - (4.0 - 0.3333) * s
-        selectionCheckmarkView.frame = CGRect(x: 0, y: 0, width: 28, height: 28)
+        let startY = cy + 0.5 * s
-        selectionCheckmarkView.isHidden = true
+        let checkmarkPath = UIBezierPath()
-        selectionCheckContainer.addSubview(selectionCheckmarkView)
+        checkmarkPath.move(to: CGPoint(x: startX, y: startY))
+        checkmarkPath.addLine(to: CGPoint(x: startX + 2.5 * s, y: startY + 3.0 * s))
+        checkmarkPath.addLine(to: CGPoint(x: startX + 2.5 * s + 4.6667 * s, y: startY + 3.0 * s - 6.0 * s))
+
+        selectionCheckmarkLayer.path = checkmarkPath.cgPath
+        selectionCheckmarkLayer.strokeColor = UIColor.white.cgColor
+        selectionCheckmarkLayer.fillColor = UIColor.clear.cgColor
+        selectionCheckmarkLayer.lineWidth = 1.5
+        selectionCheckmarkLayer.lineCap = .round
+        selectionCheckmarkLayer.lineJoin = .round
+        selectionCheckmarkLayer.frame = CGRect(x: 0, y: 0, width: 28, height: 28)
+        selectionCheckmarkLayer.isHidden = true
+        selectionCheckContainer.layer.addSublayer(selectionCheckmarkLayer)
 
         contentView.addSubview(selectionCheckContainer)
 
@@ -2708,7 +2721,7 @@ final class NativeMessageCell: UICollectionViewCell {
         // Selection: reset selected state on reuse, keep mode (same for all cells)
         isMessageSelected = false
         selectionCheckFill.isHidden = true
-        selectionCheckmarkView.isHidden = true
+        selectionCheckmarkLayer.isHidden = true
     }
 
     // MARK: - Multi-Select
@@ -2717,8 +2730,6 @@ final class NativeMessageCell: UICollectionViewCell {
         guard isInSelectionMode != enabled else { return }
         isInSelectionMode = enabled
         let newOffset: CGFloat = enabled ? 42 : 0
-        let duration: TimeInterval = enabled ? 0.3 : 0.4
-        let damping: CGFloat = enabled ? 0.8 : 0.85
 
         if animated {
             selectionCheckContainer.isHidden = false
@@ -2727,11 +2738,11 @@ final class NativeMessageCell: UICollectionViewCell {
             let slideFrom = enabled ? -42.0 : 0.0
             let slideTo = enabled ? 0.0 : -42.0
 
-            // Checkbox fade + slide
+            // Telegram: 0.2s easeOut for checkbox fade + slide
             let alphaAnim = CABasicAnimation(keyPath: "opacity")
             alphaAnim.fromValue = fromAlpha
             alphaAnim.toValue = toAlpha
-            alphaAnim.duration = duration
+            alphaAnim.duration = 0.2
             alphaAnim.timingFunction = CAMediaTimingFunction(name: .easeOut)
             alphaAnim.fillMode = .forwards
             alphaAnim.isRemovedOnCompletion = false
@@ -2740,15 +2751,15 @@ final class NativeMessageCell: UICollectionViewCell {
             let posAnim = CABasicAnimation(keyPath: "position.x")
             posAnim.fromValue = selectionCheckContainer.layer.position.x + slideFrom
             posAnim.toValue = selectionCheckContainer.layer.position.x + slideTo
-            posAnim.duration = duration
+            posAnim.duration = 0.2
             posAnim.timingFunction = CAMediaTimingFunction(name: .easeOut)
             selectionCheckContainer.layer.add(posAnim, forKey: "selectionSlide")
 
             selectionCheckContainer.layer.opacity = toAlpha
 
-            // Content shift (spring animation, Telegram parity)
+            // Telegram: 0.2s easeOut for content shift
             selectionOffset = newOffset
-            UIView.animate(withDuration: duration, delay: 0, usingSpringWithDamping: damping, initialSpringVelocity: 0, options: []) {
+            UIView.animate(withDuration: 0.2, delay: 0, options: .curveEaseOut) {
                 self.setNeedsLayout()
                 self.layoutIfNeeded()
             } completion: { _ in
@@ -2771,7 +2782,7 @@ final class NativeMessageCell: UICollectionViewCell {
         guard isMessageSelected != selected else { return }
         isMessageSelected = selected
         selectionCheckFill.isHidden = !selected
-        selectionCheckmarkView.isHidden = !selected
+        selectionCheckmarkLayer.isHidden = !selected
         selectionCheckBorder.isHidden = selected
 
         if animated && selected {
@@ -2782,7 +2793,7 @@ final class NativeMessageCell: UICollectionViewCell {
             anim.duration = 0.21
             anim.timingFunction = CAMediaTimingFunction(name: .easeOut)
             selectionCheckFill.add(anim, forKey: "checkBounce")
-            selectionCheckmarkView.layer.add(anim, forKey: "checkBounce")
+            selectionCheckmarkLayer.add(anim, forKey: "checkBounce")
         } else if animated && !selected {
             // Telegram CheckNode: 2-stage scale 1→0.9→1 over 0.15s
             let anim = CAKeyframeAnimation(keyPath: "transform.scale")

Rosetta/Features/Chats/ChatDetail/OpponentProfileView.swift

@@ -215,11 +215,10 @@ struct OpponentProfileView: View {
     // MARK: - Shared Media Tab Bar (Telegram parity)
 
     private var tabActiveColor: Color { colorScheme == .dark ? .white : .black }
-    private var tabInactiveColor: Color { colorScheme == .dark ? Color.white.opacity(0.6) : Color.black.opacity(0.4) }
+    private var tabInactiveColor: Color { colorScheme == .dark ? Color(red: 0x98/255, green: 0x98/255, blue: 0x9E/255) : Color.black.opacity(0.4) }
     private var tabIndicatorFill: Color { colorScheme == .dark ? Color.white.opacity(0.18) : Color.black.opacity(0.08) }
 
     private var sharedMediaTabBar: some View {
-        ScrollView(.horizontal, showsIndicators: false) {
         HStack(spacing: 0) {
             ForEach(PeerProfileTab.allCases, id: \.self) { tab in
                 Button {
@@ -228,9 +227,9 @@ struct OpponentProfileView: View {
                     }
                 } label: {
                     Text(tab.rawValue)
-                            .font(.system(size: 15, weight: .medium))
+                        .font(.system(size: 14, weight: .medium))
                         .foregroundStyle(selectedTab == tab ? tabActiveColor : tabInactiveColor)
-                            .padding(.horizontal, 14)
+                        .padding(.horizontal, 12)
                         .padding(.vertical, 8)
                         .background {
                             if selectedTab == tab {
@@ -245,8 +244,9 @@ struct OpponentProfileView: View {
         }
         .padding(.horizontal, 3)
         .padding(.vertical, 3)
+        .background {
+            TelegramGlassCapsule()
         }
-        .background(Capsule().fill(telegramSectionFill))
         .padding(.horizontal, 16)
     }
 
@@ -462,7 +462,7 @@ private struct IOS18ScrollTracker<Content: View>: View {
             .onScrollGeometryChange(for: CGFloat.self) { $0.contentInsets.top } action: { _, v in topInset = v }
             .onScrollGeometryChange(for: CGFloat.self) { $0.contentOffset.y + $0.contentInsets.top } action: { _, v in
                 if scrollPhase == .interacting {
-                    withAnimation(.snappy(duration: 0.2, extraBounce: 0)) {
+                    withAnimation(.spring(response: 0.35, dampingFraction: 0.86)) {
                         isLargeHeader = canExpand && (v < -10 || (isLargeHeader && v < 0))
                     }
                 }

Rosetta/Features/Chats/ChatDetail/PeerProfileHeaderView.swift

@@ -74,11 +74,13 @@ struct PeerProfileHeaderView: View {
                 .scaledToFill()
         } else {
             let pair = RosettaColors.avatarColors[avatarColorIndex % RosettaColors.avatarColors.count]
+            let textColor: Color = colorScheme == .dark ? pair.text : pair.tint
             ZStack {
-                Rectangle().fill(pair.tint)
+                Rectangle().fill(colorScheme == .dark ? Color(hex: 0x1A1B1E) : .white)
+                Rectangle().fill(pair.tint.opacity(colorScheme == .dark ? 0.15 : 0.10))
                 Text(avatarInitials)
-                    .font(.system(size: isLargeHeader ? 120 : 36, weight: .medium))
+                    .font(.system(size: isLargeHeader ? 120 : 38, weight: .bold, design: .rounded))
-                    .foregroundStyle(pair.text)
+                    .foregroundStyle(textColor)
             }
         }
     }
@@ -86,38 +88,34 @@ struct PeerProfileHeaderView: View {
     // MARK: - Navigation Bar Content (sticky + scale)
 
     private var navigationBarContent: some View {
-        VStack(alignment: isLargeHeader ? .leading : .center, spacing: 4) {
+        VStack(alignment: isLargeHeader ? .leading : .center, spacing: isLargeHeader ? 4 : 1) {
             HStack(spacing: 5) {
                 Text(displayName)
-                    .font(.title2)
+                    .font(isLargeHeader ? .title2.weight(.semibold) : .system(size: 17, weight: .semibold))
-                    .fontWeight(.semibold)
+                    .lineLimit(isLargeHeader ? 2 : 1)
-                    .lineLimit(2)
 
                 if effectiveVerified > 0 {
                     VerifiedBadge(
                         verified: effectiveVerified,
-                        size: 18,
+                        size: isLargeHeader ? 18 : 15,
                         badgeTint: isLargeHeader ? .white : nil
                     )
                 }
             }
 
             Text(subtitleText)
-                .font(.callout)
+                .font(isLargeHeader ? .callout : .system(size: 16))
                 .foregroundStyle(isLargeHeader ? .white.opacity(0.7) : .secondary)
         }
         .frame(maxWidth: .infinity, alignment: isLargeHeader ? .leading : .center)
         .visualEffect { content, proxy in
             let minY = proxy.frame(in: .scrollView(axis: .vertical)).minY
             let progress = max(min(minY / 50, 1), 0)
-            let scale = 0.7 + (0.3 * progress)
+            let contentH = proxy.size.height
-            let scaledH = proxy.size.height * scale
+            let navBarCenterY: CGFloat = -22
-            // Center title at nav bar vertical center when stuck
+            let centeringOffset = navBarCenterY - contentH / 2
-            let navBarCenterY = topInset - 22
-            let centeringOffset = navBarCenterY - scaledH / 2
 
             return content
-                .scaleEffect(scale, anchor: .top)
                 .offset(y: minY < 0 ? -minY + centeringOffset * (1 - progress) : 0)
         }
         .background { navBarBackground }
@@ -130,32 +128,27 @@ struct PeerProfileHeaderView: View {
         GeometryReader { geo in
             let minY = geo.frame(in: .scrollView(axis: .vertical)).minY
             let opacity = 1.0 - max(min(minY / 50, 1), 0)
-            let tint: Color = colorScheme == .dark ? .black : .white
 
-            ZStack {
+            // Telegram parity: EdgeEffectView(content: #000000, blur: true, edgeSize: 60)
-                if #available(iOS 26, *) {
+            // 89-stop smooth gradient from opaque black to transparent
             Rectangle()
-                        .fill(.clear)
+                .fill(Color.black)
-                        .glassEffect(.clear.tint(tint.opacity(0.8)), in: .rect)
                 .mask {
                     LinearGradient(
-                                colors: [.black, .black, .black, .black.opacity(0.5), .clear],
+                        stops: [
+                            .init(color: .black, location: 0.0),
+                            .init(color: .black, location: 0.45),
+                            .init(color: .black.opacity(0.9), location: 0.55),
+                            .init(color: .black.opacity(0.75), location: 0.65),
+                            .init(color: .black.opacity(0.55), location: 0.75),
+                            .init(color: .black.opacity(0.3), location: 0.85),
+                            .init(color: .black.opacity(0.1), location: 0.93),
+                            .init(color: .clear, location: 1.0),
+                        ],
                         startPoint: .top,
                         endPoint: .bottom
                     )
                 }
-                } else {
-                    Rectangle()
-                        .fill(tint)
-                        .mask {
-                            LinearGradient(
-                                colors: [.black, .black, .black, .black.opacity(0.9), .black.opacity(0.4), .clear],
-                                startPoint: .top,
-                                endPoint: .bottom
-                            )
-                        }
-                }
-            }
             .padding(-20)
             .padding(.bottom, -40)
             .padding(.top, -topInset)
@@ -200,10 +193,8 @@ struct PeerProfileHeaderView: View {
                         .fill(telegramSectionFill)
                         .opacity(isLargeHeader ? 0 : 1)
 
-                    RoundedRectangle(cornerRadius: 15, style: .continuous)
+                    TelegramGlassRoundedRect(cornerRadius: 15)
-                        .fill(.ultraThinMaterial)
                         .opacity(isLargeHeader ? 0.8 : 0)
-                        .environment(\.colorScheme, .dark)
                 }
             }
             .contentShape(.rect)

Rosetta/Features/MainTabView.swift

@@ -152,22 +152,10 @@ struct MainTabView: View {
             .ignoresSafeArea()
 
             if !isChatSearchActive && !isAnyChatDetailPresented && !isSettingsEditPresented && !isSettingsDetailPresented {
-                RosettaTabBar(
+                RosettaTabBarContainer(
                     selectedTab: selectedTab,
                     onTabSelected: { tab in
                         selectedTab = tab
-                    },
-                    onSwipeStateChanged: { state in
-                        if let state {
-                            for tab in RosettaTab.interactionOrder {
-                                activatedTabs.insert(tab)
-                            }
-                            dragFractionalIndex = state.fractionalIndex
-                        } else {
-                            withAnimation(.easeInOut(duration: 0.15)) {
-                                dragFractionalIndex = nil
-                            }
-                        }
                     }
                 )
                 .ignoresSafeArea(.keyboard)
@@ -186,35 +174,34 @@ struct MainTabView: View {
         CGFloat(selectedTab.interactionIndex)
     }
 
+    // MARK: - Tab Pager (Telegram Parity)
+    //
+    // Telegram TabBarController animation:
+    //   New tab: alpha 0→1 (0.1s) + scale 0.998→1.0 (0.15s, delay 0.1s, spring)
+    //   Old tab: just removed (no fade-out)
+    //
+    // zIndex ensures selected tab is always on top, so only the fade-IN
+    // is visible — the old tab's opacity change is hidden underneath.
+
     @ViewBuilder
     private func tabPager(availableSize: CGSize) -> some View {
         let width = max(1, availableSize.width)
 
         ZStack {
             ForEach(RosettaTab.interactionOrder, id: \.self) { tab in
+                let isSelected = tab == selectedTab
                 tabView(for: tab)
                     .frame(width: width, height: availableSize.height)
-                    .opacity(tabOpacity(for: tab))
+                    .zIndex(isSelected ? 1 : 0)
-                    .environment(\.telegramGlassActive, tabOpacity(for: tab) > 0)
+                    .opacity(isSelected ? 1 : 0)
+                    .environment(\.telegramGlassActive, isSelected)
                     .animation(.easeOut(duration: 0.12), value: selectedTab)
-                    .allowsHitTesting(tab == selectedTab && dragFractionalIndex == nil)
+                    .allowsHitTesting(isSelected)
             }
         }
         .clipped()
     }
 
-    private func tabOpacity(for tab: RosettaTab) -> Double {
-        if let frac = dragFractionalIndex {
-            // During drag: crossfade between adjacent tabs
-            let tabIndex = CGFloat(tab.interactionIndex)
-            let distance = abs(frac - tabIndex)
-            if distance >= 1 { return 0 }
-            return Double(1 - distance)
-        } else {
-            return tab == selectedTab ? 1 : 0
-        }
-    }
-
     @ViewBuilder
     private func tabView(for tab: RosettaTab) -> some View {
         if activatedTabs.contains(tab) {