:root { color-scheme: dark light; --bg:#0f1115; --panel:#171a21; --fg:#e8eaed; --muted:#9aa0a8; --accent:#6aa9ff; --ok:#5fd28a; --warn:#ffb454; --err:#ff6b6b; }
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--fg); }
main { max-width: 760px; margin: 0 auto; padding: 24px 18px 48px; }
header h1 { font-size: 1.35rem; margin: .2em 0; }
.sub { color: var(--muted); margin: 0 0 1em; }
section { background: var(--panel); border: 1px solid #232733; border-radius: 12px; padding: 16px; margin: 14px 0; }
label { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
label span { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
select, button { font: inherit; }
select { background: #0d0f14; color: var(--fg); border: 1px solid #2a2f3b; border-radius: 8px; padding: 8px 10px; }
.buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
button { background: #232733; color: var(--fg); border: 1px solid #2f3543; border-radius: 8px; padding: 9px 14px; cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--accent); color: #07101f; border-color: var(--accent); font-weight: 600; }
#ptt { background: var(--ok); color: #062812; border-color: var(--ok); font-weight: 600; }
#ptt.recording { background: var(--err); color: #2a0606; border-color: var(--err); }
.status { margin: 12px 0 0; color: var(--muted); font-size: .9rem; min-height: 1.2em; }
.status.ok { color: var(--ok); } .status.warn { color: var(--warn); } .status.err { color: var(--err); }
.transcript { min-height: 120px; max-height: 50vh; overflow-y: auto; font-size: .95rem; }
.transcript:empty::before { content: "Transcript will appear here."; color: var(--muted); }
.turn { margin: 0 0 12px; padding: 8px 10px; border-radius: 8px; }
.turn.user { background: #1d2330; }
.turn.assistant { background: #1a2418; }
.turn .who { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 2px; }
footer { color: var(--muted); font-size: .85rem; }
footer .muted { font-size: .8rem; opacity: .8; }
code { background: #0d0f14; padding: 1px 5px; border-radius: 4px; font-size: .85em; }