import SwiftUI

// Liquid Glass on iOS 26, thin material below — one modifier so every floating
// element falls back the same way. (Split out of the retired ChatView.swift;
// used by composers, headers, and chips across the app.)
extension View {
    @ViewBuilder func floatingGlass<S: InsettableShape>(in shape: S) -> some View {
        #if os(iOS)
        if #available(iOS 26.0, *) {
            self.glassEffect(.regular, in: shape)
        } else {
            scrollSafeGlass(in: shape)
        }
        #else
        scrollSafeGlass(in: shape)
        #endif
    }

    // For glass that floats OVER SCROLLING CONTENT: the liquid-glass lens
    // refracts and duplicates whatever passes beneath it — over the chat
    // feed that rendered as ghosted, stacked, compressed bubbles sliding
    // under the header (the 2026-07-20 hunt; the /bareedges bisect convicted
    // the glass, not the list). A material blurs its backdrop without
    // lensing, so surfaces on the scroll path use this on every OS.
    func scrollSafeGlass<S: InsettableShape>(in shape: S) -> some View {
        self.background(.ultraThinMaterial, in: shape)
            .overlay(shape.strokeBorder(Color(.separator).opacity(0.4), lineWidth: 0.5))
    }
}