frontend/src/voice.css

/* ── Voice page styles — all classes prefixed with voice- to avoid collisions ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Background ── */
.voice-bg-particles {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
}
.voice-bg-particles::before {
  content: '';
  position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(108,92,231,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(116,185,255,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(162,155,254,0.05) 0%, transparent 50%);
  animation: voiceBgShift 20s ease-in-out infinite alternate;
}
@keyframes voiceBgShift {
  0%   { transform: translate(0,0) rotate(0deg); }
  100% { transform: translate(-5%,3%) rotate(3deg); }
}

/* ── App container ── */
.voice-app-container {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  height: 100vh; max-width: 1440px; margin: 0 auto;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  color: #f0f0f5;
}

/* ── Header ── */
.voice-app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  z-index: 10;
}
.voice-header-left  { display: flex; align-items: center; gap: 14px; }
.voice-header-right { display: flex; align-items: center; gap: 10px; }

.voice-back-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.06);
  background: transparent; color: #9a9ab0;
  font-size: 0.8rem; font-weight: 500; cursor: pointer;
  text-decoration: none;
  transition: 200ms cubic-bezier(0.4,0,0.2,1);
}
.voice-back-btn:hover { background: #1c1c28; color: #f0f0f5; border-color: rgba(108,92,231,0.3); }

.voice-logo-icon {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
  color: #fff;
  box-shadow: 0 0 40px rgba(108,92,231,0.35);
  flex-shrink: 0;
}
.voice-header-text h1 {
  font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em;
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.voice-subtitle { font-size: 0.72rem; color: #5c5c7a; letter-spacing: 0.02em; }

/* Status badge */
.voice-status-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 13px; border-radius: 9999px;
  font-size: 0.75rem; font-weight: 500;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06);
}
.voice-status-badge.voice-status-connected   { background: rgba(0,206,201,0.1);  border-color: rgba(0,206,201,0.3); }
.voice-status-badge.voice-status-connecting  { background: rgba(253,203,110,0.1); border-color: rgba(253,203,110,0.3); }
.voice-status-badge.voice-status-error       { background: rgba(255,118,117,0.1); border-color: rgba(255,118,117,0.3); }

.voice-status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #00cec9; box-shadow: 0 0 8px #00cec9;
  animation: voicePulse 2s ease-in-out infinite;
}
.voice-status-badge.voice-status-connecting .voice-status-dot { background: #fdcb6e; box-shadow: 0 0 8px #fdcb6e; }
.voice-status-badge.voice-status-error      .voice-status-dot { background: #ff7675; box-shadow: 0 0 8px #ff7675; }
.voice-status-badge.voice-status-disconnected .voice-status-dot { background: #5c5c7a; box-shadow: none; animation: none; }
@keyframes voicePulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: 0.5; transform: scale(0.8); }
}

.voice-btn-icon {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.06); background: transparent;
  color: #9a9ab0; cursor: pointer;
  transition: 200ms cubic-bezier(0.4,0,0.2,1);
}
.voice-btn-icon:hover { background: #1c1c28; color: #f0f0f5; border-color: rgba(108,92,231,0.3); }

/* ── Main layout ── */
.voice-main-content {
  display: flex; flex: 1; overflow: hidden;
}

/* ── Avatar panel ── */
.voice-avatar-panel {
  width: 300px; flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center;
  padding: 28px 20px; gap: 24px;
  border-right: 1px solid rgba(255,255,255,0.06);
  background: #12121a;
}
.voice-avatar-container {
  position: relative; width: 180px; height: 180px; border-radius: 50%;
  background: #16161f; border: 2px solid rgba(108,92,231,0.3);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  box-shadow: 0 0 40px rgba(108,92,231,0.35); overflow: visible;
}
.voice-avatar-glow {
  position: absolute; inset: -20px; border-radius: 50%;
  background: radial-gradient(circle, rgba(108,92,231,0.35) 0%, transparent 70%);
  animation: voiceGlowPulse 3s ease-in-out infinite; pointer-events: none;
}
@keyframes voiceGlowPulse {
  0%,100% { opacity: 0.5; }
  50%     { opacity: 1; }
}
.voice-avatar-icon { color: #a29bfe; opacity: 0.9; }
.voice-avatar-name { margin-top: 8px; font-size: 0.8rem; font-weight: 500; color: #9a9ab0; letter-spacing: 0.03em; }

.voice-speaking-indicator {
  position: absolute; bottom: -20px;
  display: flex; align-items: flex-end; gap: 3px; height: 24px;
}
.voice-wave-bar {
  width: 4px; border-radius: 2px; background: #6c5ce7;
  animation: voiceWave 0.8s ease-in-out infinite alternate;
}
.voice-wave-bar:nth-child(1) { height: 8px; }
.voice-wave-bar:nth-child(2) { height: 16px; }
.voice-wave-bar:nth-child(3) { height: 24px; }
.voice-wave-bar:nth-child(4) { height: 16px; }
.voice-wave-bar:nth-child(5) { height: 8px; }
@keyframes voiceWave {
  from { transform: scaleY(0.4); opacity: 0.6; }
  to   { transform: scaleY(1);   opacity: 1; }
}

.voice-avatar-stats {
  display: flex; gap: 16px; width: 100%; justify-content: center;
  padding: 14px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.voice-stat-item { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.voice-stat-value {
  font-size: 1.1rem; font-weight: 700; font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.voice-stat-value.voice-conn-connected    { color: #00cec9; -webkit-text-fill-color: #00cec9; background: none; }
.voice-stat-value.voice-conn-disconnected { color: #5c5c7a; -webkit-text-fill-color: #5c5c7a; background: none; }
.voice-stat-value.voice-conn-connecting   { color: #fdcb6e; -webkit-text-fill-color: #fdcb6e; background: none; }
.voice-stat-value.voice-conn-error        { color: #ff7675; -webkit-text-fill-color: #ff7675; background: none; }
.voice-stat-label { font-size: 0.7rem; color: #5c5c7a; letter-spacing: 0.04em; text-transform: uppercase; }

.voice-connect-area { width: 100%; }
.voice-btn-connect, .voice-btn-disconnect {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border: none; border-radius: 12px;
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
  transition: 200ms cubic-bezier(0.4,0,0.2,1);
}
.voice-btn-connect {
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
  color: #fff; box-shadow: 0 4px 20px rgba(108,92,231,0.35);
}
.voice-btn-connect:hover    { transform: translateY(-1px); box-shadow: 0 6px 28px rgba(108,92,231,0.35); }
.voice-btn-connect:disabled { background: #1c1c28; color: #5c5c7a; box-shadow: none; cursor: not-allowed; transform: none; }
.voice-btn-disconnect {
  background: rgba(255,118,117,0.1); border: 1px solid rgba(255,118,117,0.3); color: #ff7675;
}
.voice-btn-disconnect:hover { background: rgba(255,118,117,0.2); }

.voice-spinner-sm {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.2); border-top-color: #fff;
  animation: voiceSpin 0.7s linear infinite; display: inline-block;
}
@keyframes voiceSpin { to { transform: rotate(360deg); } }

/* ── Chat panel ── */
.voice-chat-panel {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
  background: #0a0a0f;
}
.voice-chat-messages {
  flex: 1; overflow-y: auto; padding: 20px 24px;
  display: flex; flex-direction: column; gap: 16px;
  scrollbar-width: thin; scrollbar-color: #1c1c28 transparent;
}
.voice-chat-messages::-webkit-scrollbar { width: 4px; }
.voice-chat-messages::-webkit-scrollbar-thumb { background: #1c1c28; border-radius: 2px; }

.voice-message { display: flex; gap: 12px; animation: voiceFadeIn 0.2s ease-out; }
@keyframes voiceFadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.voice-user-message      { flex-direction: row-reverse; }
.voice-system-message    { justify-content: center; }
.voice-assistant-message { flex-direction: row; }

.voice-message-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.voice-assistant-message .voice-message-avatar {
  background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
  color: #fff; box-shadow: 0 2px 10px rgba(108,92,231,0.35);
}
.voice-user-message .voice-message-avatar {
  background: #1c1c28; color: #9a9ab0; border: 1px solid rgba(255,255,255,0.06);
}

.voice-message-content { max-width: 68%; display: flex; flex-direction: column; gap: 4px; }
.voice-user-message .voice-message-content { align-items: flex-end; }

.voice-message-header { display: flex; align-items: baseline; gap: 8px; }
.voice-message-name { font-size: 0.8rem; font-weight: 600; color: #9a9ab0; }
.voice-message-time { font-size: 0.7rem; color: #5c5c7a; }

.voice-message-text {
  padding: 10px 14px; border-radius: 12px;
  font-size: 0.9rem; line-height: 1.55;
}
.voice-assistant-message .voice-message-text {
  background: #16161f; border: 1px solid rgba(255,255,255,0.06);
  border-bottom-left-radius: 4px; color: #f0f0f5;
}
.voice-user-message .voice-message-text {
  background: #6c5ce7; color: #fff; border-bottom-right-radius: 4px;
}
.voice-message-text code {
  background: #1c1c28; padding: 1px 5px; border-radius: 4px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 0.82em;
}

.voice-system-message .voice-message-content {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
  border-radius: 9999px; padding: 5px 14px; max-width: none;
}
.voice-system-message .voice-message-text {
  font-size: 0.78rem; color: #5c5c7a; background: none; border: none; padding: 0;
}

/* ── Input hint ── */
.voice-input-area {
  padding: 16px 24px; border-top: 1px solid rgba(255,255,255,0.06);
  background: #12121a;
}
.voice-hint {
  display: flex; align-items: center; gap: 10px; justify-content: center;
  font-size: 0.85rem; color: #5c5c7a; padding: 10px;
  border: 1px dashed rgba(255,255,255,0.06); border-radius: 12px;
}
.voice-mic-pulse {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: #00cec9; box-shadow: 0 0 8px #00cec9;
  animation: voicePulse 1.5s ease-in-out infinite;
}