* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, sans-serif; max-width: 640px; margin: 0 auto; padding: 20px; background: #0d0d1a; color: #e0e0e0; }
h1 { text-align: center; color: #7c6ff7; margin-bottom: 8px; }

#models { display: flex; gap: 8px; justify-content: center; margin: 12px 0; }
.model-btn { padding: 6px 14px; border: 1px solid #7c6ff7; background: transparent; color: #7c6ff7; border-radius: 6px; font-size: 13px; cursor: default; }
.model-btn.active { background: #7c6ff7; color: #fff; }

#visualizer { text-align: center; margin: 10px 0; }
#meter { border-radius: 6px; background: #1a1a2e; }

#controls { display: flex; gap: 10px; justify-content: center; margin: 12px 0; }
#btnRecord { padding: 10px 28px; background: #e84393; color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; }
#btnRecord:disabled { opacity: 0.5; cursor: not-allowed; }
#btnPlay { padding: 10px 20px; background: #00b894; color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; }
#btnPlay:disabled { opacity: 0.4; cursor: not-allowed; }

#status { text-align: center; color: #888; font-size: 14px; min-height: 20px; margin: 8px 0; }

#chat { border: 1px solid #2a2a3e; border-radius: 8px; padding: 14px; min-height: 240px; max-height: 380px; overflow-y: auto; margin: 12px 0; background: #13132a; }
.user { color: #00cec9; margin: 8px 0; word-break: break-word; }
.bot { color: #a29bfe; margin: 8px 0; word-break: break-word; }