index.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>Open-Source Voice Agent</title>
<style>
/* ── Reset & base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg0:      #0f1117;
  --bg1:      #161b27;
  --bg2:      #1e2436;
  --bg3:      #252d42;
  --border:   #2e3a52;
  --text0:    #e8eaf0;
  --text1:    #9aa3b8;
  --text2:    #5c677e;
  --accent:   #4f8ef7;
  --green:    #22c55e;
  --amber:    #f59e0b;
  --blue:     #3b82f6;
  --red:      #ef4444;
  --radius:   12px;
  --font:     'Inter', system-ui, -apple-system, sans-serif;
}

body {
  background: var(--bg0);
  color: var(--text0);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.page {
  width: 100%;
  max-width: 680px;
  padding: 24px 16px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.header { text-align: center; padding: 8px 0 4px; }
.header h1 { font-size: 22px; font-weight: 600; letter-spacing: -0.3px; }
.header p  { font-size: 13px; color: var(--text1); margin-top: 6px; }

.badges {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
  margin-top: 10px;
}
.badge {
  font-size: 11px; font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text1);
  background: var(--bg2);
}
.badge span { color: var(--accent); }

/* ── Card ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ── Visualiser ──────────────────────────────────────────────────────────── */
.vis-wrap {
  padding: 0;
  background: var(--bg0);
  border-bottom: 1px solid var(--border);
}
#visualiser {
  display: block;
  width: 100%;
  height: 90px;
}

/* ── Controls ────────────────────────────────────────────────────────────── */
.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 24px 20px 20px;
}

#btn-toggle {
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg2);
  color: var(--text0);
  font-size: 32px;
  cursor: pointer;
  transition: background .15s, transform .1s, border-color .15s;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: 4px;
  line-height: 1;
}
#btn-toggle:hover { background: var(--bg3); border-color: var(--accent); }
#btn-toggle:active { transform: scale(0.95); }
#btn-toggle.active {
  background: #1a2440;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(79,142,247,0.15);
}
#btn-label { font-size: 11px; color: var(--text1); font-weight: 500; }

/* ── Status bar ──────────────────────────────────────────────────────────── */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  justify-content: space-between;
}
.status-left { display: flex; align-items: center; gap: 8px; }
#status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #6b7280;
  transition: background .3s;
  flex-shrink: 0;
}
#status-dot.pulse { animation: pulse 1.2s infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
#status-text { font-size: 13px; color: var(--text1); }
#latency { font-size: 12px; color: var(--text2); }

/* ── Transcript ──────────────────────────────────────────────────────────── */
.transcript-header {
  padding: 12px 16px 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text2);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
#btn-clear {
  font-size: 11px; color: var(--text2);
  background: none; border: none; cursor: pointer;
  padding: 2px 6px; border-radius: 4px;
}
#btn-clear:hover { color: var(--text1); background: var(--bg3); }

#transcript {
  min-height: 120px;
  max-height: 320px;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}
#transcript:empty::before {
  content: 'Conversation will appear here…';
  color: var(--text2);
  font-size: 13px;
}

.msg { display: flex; flex-direction: column; gap: 3px; }
.msg-role {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.msg-text { font-size: 14px; line-height: 1.55; color: var(--text0); }

.msg-user   .msg-role { color: var(--green); }
.msg-agent  .msg-role { color: var(--blue); }
.msg-user   .msg-text { color: var(--text0); }
.msg-agent  .msg-text { color: var(--text0); }

/* ── Model info footer ───────────────────────────────────────────────────── */
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.model-cell {
  background: var(--bg1);
  padding: 12px 14px;
  text-align: center;
}
.model-cell .mc-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text2);
  margin-bottom: 4px;
}
.model-cell .mc-name { font-size: 12px; font-weight: 500; color: var(--text0); }
.model-cell .mc-size { font-size: 11px; color: var(--text2); margin-top: 2px; }

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 2px; }
</style>
</head>
<body>
<div class="page">

  <!-- Header -->
  <div class="header">
    <h1>🎤 Open-Source Voice Agent</h1>
    <p>100% open-source models · streaming overlap pipeline · English</p>
    <div class="badges">
      <div class="badge"><span>STT</span> Whisper base.en</div>
      <div class="badge"><span>LLM</span> SmolLM2-1.7B</div>
      <div class="badge"><span>TTS</span> MMS-TTS-eng</div>
      <div class="badge"><span>VAD</span> Silero</div>
    </div>
  </div>

  <!-- Voice card -->
  <div class="card">
    <!-- Waveform visualiser -->
    <div class="vis-wrap">
      <canvas id="visualiser"></canvas>
    </div>

    <!-- Mic button -->
    <div class="controls">
      <button id="btn-toggle" aria-label="Start recording">
        <span id="btn-icon">🎤</span>
        <span id="btn-label">START</span>
      </button>
    </div>

    <!-- Status bar -->
    <div class="status-bar">
      <div class="status-left">
        <div id="status-dot"></div>
        <span id="status-text">Ready — click Start to begin</span>
      </div>
      <span id="latency"></span>
    </div>
  </div>

  <!-- Transcript -->
  <div class="card">
    <div class="transcript-header">
      Conversation
      <button id="btn-clear">Clear</button>
    </div>
    <div id="transcript"></div>
  </div>

  <!-- Model info -->
  <div class="model-grid">
    <div class="model-cell">
      <div class="mc-label">Speech-to-Text</div>
      <div class="mc-name">Whisper base.en</div>
      <div class="mc-size">74 M params · GPU/CPU</div>
    </div>
    <div class="model-cell">
      <div class="mc-label">Language Model</div>
      <div class="mc-name">SmolLM2-1.7B-Instruct</div>
      <div class="mc-size">1.7 B params · GPU/CPU</div>
    </div>
    <div class="model-cell">
      <div class="mc-label">Text-to-Speech</div>
      <div class="mc-name">MMS-TTS-eng</div>
      <div class="mc-size">VITS · 16 kHz · CPU</div>
    </div>
  </div>

</div>

<script src="/app.js" defer></script>
<script>
  // Wire up the Clear button after DOM is ready
  document.getElementById('btn-clear').addEventListener('click', () => {
    document.getElementById('transcript').innerHTML = '';
  });

  // Reflect active state on button
  const _setState_orig = window.setState;
  // We patch setState in app.js via a MutationObserver hack instead:
  const _btnToggle = document.getElementById('btn-toggle');
  const _btnIcon   = document.getElementById('btn-icon');
  const _btnLabel  = document.getElementById('btn-label');
  const _dot       = document.getElementById('status-dot');

  // Observe #status-dot background changes to mirror active state on button
  const obs = new MutationObserver(() => {
    const bg = _dot.style.background;
    if (bg === '#22c55e' || bg === '#3b82f6') {
      _btnToggle.classList.add('active');
      _btnIcon.textContent  = '⏹';
      _btnLabel.textContent = 'STOP';
    } else if (bg === '#f59e0b') {
      _btnToggle.classList.add('active');
      _btnIcon.textContent  = '💭';
      _btnLabel.textContent = 'THINKING';
    } else {
      _btnToggle.classList.remove('active');
      _btnIcon.textContent  = '🎤';
      _btnLabel.textContent = 'START';
    }

    // Pulse dot when not idle
    _dot.classList.toggle('pulse', bg !== '#6b7280');
  });
  obs.observe(_dot, { attributes: true, attributeFilter: ['style'] });
</script>
</body>
</html>