* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, sans-serif; margin: 0; padding: 0; background: #0d0d1a; color: #e0e0e0; }

#app { display: flex; height: 100vh; }
#main { flex: 1; padding: 20px; max-width: 680px; margin: 0 auto; overflow-y: auto; }

#ver { font-size: 14px; color: #666; font-weight: normal; }

h1 { color: #7c6ff7; margin: 0 0 8px; font-size: 20px; }

#visualizer { margin: 10px 0; }
#meter { border-radius: 6px; background: #1a1a2e; display: block; margin: 0 auto; }

#controls { display: flex; gap: 8px; justify-content: center; margin: 10px 0; flex-wrap: wrap; }
#btnRecord { padding: 10px 24px; 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 16px; background: #00b894; color: #fff; border: none; border-radius: 8px; font-size: 14px; cursor: pointer; }
#btnPlay:disabled { opacity: 0.4; cursor: not-allowed; }
#btnReset { padding: 10px 16px; background: #636e72; color: #fff; border: none; border-radius: 8px; font-size: 14px; cursor: pointer; }

#status { text-align: center; color: #888; font-size: 14px; min-height: 20px; margin: 6px 0; }

#chat { border: 1px solid #2a2a3e; border-radius: 8px; padding: 12px; min-height: 200px; max-height: 340px; overflow-y: auto; background: #13132a; }
.user { color: #00cec9; margin: 6px 0; word-break: break-word; font-size: 14px; }
.bot { color: #a29bfe; margin: 6px 0 12px; word-break: break-word; font-size: 14px; }

#sidebar { width: 280px; background: #111122; border-left: 1px solid #2a2a3e; padding: 14px; overflow-y: auto; }
#history-title { color: #7c6ff7; font-weight: bold; margin-bottom: 10px; font-size: 15px; }
.hitem { padding: 6px 8px; border-radius: 4px; cursor: pointer; margin-bottom: 4px; font-size: 13px; color: #bbb; }
.hitem:hover { background: #1a1a3e; }
.hq { display: block; }