* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: #f4f5f7; color: #1d2330; }
header { display: flex; gap: 1rem; align-items: center; padding: .75rem 1rem; background: #1d2330; color: #fff; }
header #who { margin-left: auto; opacity: .85; }
main { max-width: 760px; margin: 0 auto; padding: 1rem; }
button { font: inherit; padding: .5rem .9rem; border: 0; border-radius: 6px; background: #2f6fed; color: #fff; cursor: pointer; }
header button { background: transparent; border: 1px solid #fff5; }
.muted { color: #6b7280; }
#log { display: flex; flex-direction: column; gap: .5rem; min-height: 50vh; max-height: 65vh; overflow-y: auto; padding: .5rem 0; }
.msg { padding: .6rem .8rem; border-radius: 8px; white-space: pre-wrap; max-width: 90%; }
.msg.me { align-self: flex-end; background: #2f6fed; color: #fff; }
.msg.agent { align-self: flex-start; background: #fff; border: 1px solid #e3e6ec; }
#hints { display: flex; flex-wrap: wrap; gap: .4rem; margin: .5rem 0; }
#hints .hint { background: #e8eefc; color: #1d2330; }
#chat-form { display: flex; gap: .5rem; }
#chat-form textarea { flex: 1; font: inherit; padding: .5rem; border: 1px solid #cfd4dc; border-radius: 6px; resize: vertical; }
#caps { margin-top: 1rem; color: #6b7280; }