.waifu-ai-panel {
  position: fixed;
  left: 292px;
  bottom: 24px;
  z-index: 1002;
  display: none;
  flex-direction: column;
  width: min(460px, calc(100vw - 320px));
  height: min(620px, calc(100vh - 48px));
  overflow: hidden;
  color: #555;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 150, 175, 0.55);
  border-radius: 18px;
  box-shadow: 0 10px 36px rgba(90, 70, 90, 0.24);
  backdrop-filter: blur(12px);
}

.waifu-ai-panel.is-open {
  display: flex;
  animation: waifu-ai-open 180ms ease-out;
}

.waifu-ai-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 17px;
  color: #fff;
  background: linear-gradient(135deg, #ff9eb5, #ff7898);
}

.waifu-ai-title {
  font-size: 16px;
  font-weight: 600;
}

.waifu-ai-close {
  padding: 2px 6px;
  color: inherit;
  font-size: 22px;
  line-height: 1;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.waifu-ai-messages {
  flex: 1;
  padding: 17px;
  overflow-y: auto;
  background: rgba(255, 248, 251, 0.72);
}

.waifu-ai-message {
  width: fit-content;
  max-width: 85%;
  margin: 0 0 10px;
  padding: 9px 11px;
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  border-radius: 12px;
}

.waifu-ai-message.assistant {
  margin-right: auto;
  background: #fff;
  border: 1px solid rgba(255, 192, 203, 0.55);
}

.waifu-ai-message.user {
  margin-left: auto;
  color: #fff;
  background: #ff8eaa;
}

.waifu-ai-message.error {
  color: #b64059;
  background: #fff0f3;
}

.waifu-ai-form {
  display: flex;
  gap: 8px;
  padding: 13px;
  background: #fff;
  border-top: 1px solid rgba(255, 192, 203, 0.4);
}

.waifu-ai-input {
  flex: 1;
  min-width: 0;
  padding: 9px 11px;
  color: #555;
  background: #fffafb;
  border: 1px solid #ffd0dc;
  border-radius: 10px;
}

.waifu-ai-input:focus {
  border-color: #ff8eaa;
  box-shadow: 0 0 0 2px rgba(255, 142, 170, 0.14);
}

.waifu-ai-send {
  padding: 0 15px;
  color: #fff;
  background: #ff8eaa;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
}

.waifu-ai-send:disabled,
.waifu-ai-input:disabled {
  cursor: wait;
  opacity: 0.6;
}

@keyframes waifu-ai-open {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 756px) {
  .waifu-ai-panel {
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
    height: min(76vh, 580px);
  }
}