:root {
  --caigeas-clay: #bf5b3d;
  --caigeas-clay-dark: #9c4530;
  --caigeas-sage-soft: #e3e9dd;
  --caigeas-ink: #241f1a;
  --caigeas-line: #e4dcd0;
  --caigeas-paper: #fffcf7;
}

#caigeas-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99999;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

#caigeas-toggle {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  border: none;
  background: var(--caigeas-clay);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(191, 91, 61, 0.35);
  transition: transform 0.15s ease;
}
#caigeas-toggle:hover {
  transform: scale(1.05);
}

#caigeas-panel {
  width: 350px;
  max-width: calc(100vw - 48px);
  height: 450px;
  background: var(--caigeas-paper);
  border: 1px solid var(--caigeas-line);
  border-radius: 16px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.2);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
#caigeas-panel.open {
  display: flex;
}

#caigeas-header {
  background: var(--caigeas-clay);
  color: #fff;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
#caigeas-header .title {
  font-weight: 600;
  font-size: 15px;
}
#caigeas-header .subtitle {
  font-size: 12px;
  opacity: 0.85;
}
#caigeas-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}
#caigeas-voice-toggle,
#caigeas-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 6px;
  line-height: 1;
  border-radius: 6px;
}
#caigeas-voice-toggle:hover,
#caigeas-close:hover {
  background: rgba(255, 255, 255, 0.15);
}
#caigeas-voice-toggle[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.22);
}

#caigeas-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.caigeas-msg {
  max-width: 85%;
  padding: 9px 13px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.4;
  white-space: pre-wrap;
}
.caigeas-msg.user {
  align-self: flex-end;
  background: var(--caigeas-clay);
  color: #fff;
}
.caigeas-msg.assistant {
  align-self: flex-start;
  background: var(--caigeas-sage-soft);
  color: var(--caigeas-ink);
}

#caigeas-form {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid var(--caigeas-line);
}
#caigeas-input {
  flex: 1;
  border: 1px solid var(--caigeas-line);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  outline: none;
  min-width: 0;
}
#caigeas-input:focus {
  border-color: var(--caigeas-clay);
}
#caigeas-mic {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--caigeas-line);
  background: #fff;
  color: var(--caigeas-clay);
  font-size: 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, transform 0.15s ease;
}
#caigeas-mic:hover {
  background: var(--caigeas-sage-soft);
}
#caigeas-mic.listening {
  background: var(--caigeas-clay);
  color: #fff;
  animation: caigeas-mic-pulse 1.2s ease-in-out infinite;
}
@keyframes caigeas-mic-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(191, 91, 61, 0.5); }
  50% { box-shadow: 0 0 0 8px rgba(191, 91, 61, 0); }
}
#caigeas-send {
  flex-shrink: 0;
  border: none;
  border-radius: 999px;
  background: var(--caigeas-clay);
  color: #fff;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
}
#caigeas-send:disabled {
  opacity: 0.5;
  cursor: default;
}