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Soften chat panel shadows #16

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42 changes: 24 additions & 18 deletions src/app/(app)/ToggleRealtime.tsx
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Original file line number Diff line number Diff line change
@@ -1,7 +1,15 @@
'use client'

import { AnimatePresence, motion } from 'framer-motion'
import { type CSSProperties, useCallback, useEffect, useMemo, useRef, useState } from 'react'
import {
type CSSProperties,
useCallback,
useEffect,
useLayoutEffect,
useMemo,
useRef,
useState
} from 'react'

import { useRealtimeVoiceSession } from '@/realtime/provider'

Expand Down Expand Up @@ -357,7 +365,6 @@ export default function ToggleRealtime() {

const [activeIndex, setActiveIndex] = useState(0)
const transcriptListRef = useRef<HTMLDivElement | null>(null)
const transcriptBottomRef = useRef<HTMLDivElement | null>(null)
const stickToBottomRef = useRef(true)

useEffect(() => {
Expand All @@ -373,6 +380,7 @@ export default function ToggleRealtime() {
const phrase = languageOrder[activeIndex] ?? languageOrder[0]
const footerText = tab === 'session' ? statusText : ''
const canSendText = textDraft.trim().length > 0
const transcriptCount = transcripts.length

useEffect(() => {
const el = transcriptListRef.current
Expand All @@ -390,36 +398,36 @@ export default function ToggleRealtime() {
}
}, [])

useEffect(() => {
if (!stickToBottomRef.current) return
// Trigger on streaming updates (deltas) while the user is pinned to the bottom.
void transcripts
transcriptBottomRef.current?.scrollIntoView({ behavior: 'auto' })
}, [transcripts])
useLayoutEffect(() => {
const el = transcriptListRef.current
if (!el || !stickToBottomRef.current || transcriptCount === 0) return
el.scrollTop = el.scrollHeight
}, [transcriptCount])

const content =
tab === 'session' ? (
<div className="flex h-full min-h-0 w-full max-w-xl flex-col gap-4">
<div
ref={transcriptListRef}
className="flex-1 overflow-y-auto rounded-3xl border border-white/30 bg-[var(--lilac-elevated)]/70 p-4 shadow-xl backdrop-blur"
className="flex-1 overflow-y-auto overscroll-contain rounded-[28px] border border-white/40 bg-white/70 p-5 shadow-[0_18px_50px_rgba(53,32,73,0.08)] backdrop-blur-xl dark:border-white/20 dark:bg-[var(--lilac-elevated)]/70 dark:shadow-[0_18px_50px_rgba(10,6,20,0.5)]"
style={{ scrollbarGutter: 'stable both-edges' }}
>
{transcripts.length ? (
<div className="flex flex-col gap-3">
<div className="flex flex-col gap-4">
{transcripts.map(item => {
const isUser = item.role === 'user'
const bubbleBase =
'max-w-[92%] whitespace-pre-wrap rounded-3xl px-4 py-3 text-sm leading-relaxed shadow-sm'
'max-w-[90%] whitespace-pre-wrap rounded-[22px] px-4 py-3 text-sm leading-relaxed shadow-md'
const bubbleClass = isUser
? `${bubbleBase} self-end bg-[var(--lilac-ink)] text-[var(--lilac-surface)]`
: `${bubbleBase} self-start border border-white/30 bg-white/70 text-[var(--lilac-ink)] dark:border-white/22 dark:bg-white/14 dark:text-[var(--lilac-ink)]`
? `${bubbleBase} self-end bg-[linear-gradient(135deg,rgba(53,32,73,0.95),rgba(80,52,110,0.92))] text-[var(--lilac-surface)]`
: `${bubbleBase} self-start border border-white/30 bg-white/70 text-[var(--lilac-ink)] dark:border-white/22 dark:bg-white/12 dark:text-[var(--lilac-ink)]`
const label = isUser ? 'You' : 'Lilac'
const text = item.text?.trim() ? item.text : '…'

return (
<div key={item.id} className="flex flex-col gap-1">
<div
className={`px-1 font-semibold text-[10px] uppercase tracking-[0.18em] ${
className={`px-1 font-semibold text-[11px] uppercase tracking-[0.2em] ${
isUser ? 'text-right text-[var(--lilac-ink-muted)]' : 'text-[var(--lilac-ink-muted)]'
}`}
>
Expand All @@ -430,7 +438,6 @@ export default function ToggleRealtime() {
</div>
)
})}
<div ref={transcriptBottomRef} />
</div>
) : (
<div className="flex h-full flex-col items-center justify-center px-6 text-center">
Expand All @@ -449,14 +456,13 @@ export default function ToggleRealtime() {
<p className="mt-6 text-[var(--lilac-ink-muted)] text-sm">
Your spoken conversation will appear here as a live transcript.
</p>
<div ref={transcriptBottomRef} />
</div>
)}
</div>
<div className="rounded-3xl border border-white/25 bg-[var(--lilac-elevated)]/80 p-4 text-[var(--lilac-ink)] shadow-lg backdrop-blur">
<div className="rounded-[28px] border border-white/35 bg-white/75 p-4 text-[var(--lilac-ink)] shadow-[0_16px_40px_rgba(53,32,73,0.08)] backdrop-blur-xl dark:border-white/20 dark:bg-[var(--lilac-elevated)]/80 dark:shadow-[0_16px_40px_rgba(10,6,20,0.45)]">
<div className="flex flex-col gap-3 sm:flex-row sm:items-end">
<textarea
className="min-h-[64px] w-full flex-1 resize-none rounded-2xl border border-white/30 bg-white/70 px-4 py-3 text-[var(--lilac-ink)] text-sm outline-none transition focus:border-white/70 focus:bg-white dark:bg-white/10 dark:focus:border-white/30 dark:focus:bg-white/20"
className="min-h-[64px] w-full flex-1 resize-none rounded-[22px] border border-white/30 bg-white/75 px-4 py-3 text-[var(--lilac-ink)] text-sm outline-none transition focus:border-white/70 focus:bg-white/90 dark:bg-white/10 dark:focus:border-white/30 dark:focus:bg-white/20"
onChange={event => setTextDraft(event.target.value)}
placeholder="Type to translate or speak back."
rows={2}
Expand Down
9 changes: 7 additions & 2 deletions src/realtime/provider.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
'use client'

import { createContext, useCallback, useContext, useMemo, useRef, useState } from 'react'
import { createContext, useCallback, useContext, useEffect, useMemo, useRef, useState } from 'react'

import { createRealtimeSession } from '@/app/actions/realtime'

Expand Down Expand Up @@ -134,6 +134,7 @@ export function RealtimeProvider({ children }: { children: React.ReactNode }) {
const peerRef = useRef<RTCPeerConnection | null>(null)
const localRef = useRef<MediaStream | null>(null)
const turnDelaySecondsRef = useRef<number>(getInitialTurnDelaySeconds())
const latestTimelineItemIdRef = useRef<string | null>(null)
// Cancels in-flight `start()` calls and prevents multiple concurrent sessions.
const startGenerationRef = useRef(0)
// Stable transcript item id we choose for a given response_id (so we don't "split" a message mid-stream).
Expand Down Expand Up @@ -183,6 +184,10 @@ export function RealtimeProvider({ children }: { children: React.ReactNode }) {
setTranscripts(prev => orderTranscriptsByPreviousItemId(prev, previousItemIdByIdRef.current))
}, [])

useEffect(() => {
latestTimelineItemIdRef.current = transcripts.at(-1)?.id ?? null
}, [transcripts])

const upsertTranscript = useCallback(
(update: {
id: string
Expand Down Expand Up @@ -854,7 +859,7 @@ export function RealtimeProvider({ children }: { children: React.ReactNode }) {
const trimmed = text.trim()
if (!trimmed || !dataChannel) return false
const id = crypto.randomUUID()
const previousItemId = latestCommittedInputItemIdRef.current
const previousItemId = latestTimelineItemIdRef.current
previousItemIdByIdRef.current.set(id, previousItemId ?? null)
latestCommittedInputItemIdRef.current = id
upsertTranscript({
Expand Down