/* Site-wide AI assistant — candy kawaii, no avatar */
#blog-ai-root {
  --bai-bg: #fff8e7;
  --bai-primary: #ffd43b;
  --bai-pink: #ff8fab;
  --bai-blue: #74c0fc;
  --bai-text: #2b2b2b;
  --bai-shadow: 0 12px 40px rgba(255, 143, 171, 0.22);
  font-family: "General Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  z-index: 99999;
}

#blog-ai-toggle {
  position: fixed;
  right: 20px;
  bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: 2px solid var(--bai-primary);
  border-radius: 999px;
  background: linear-gradient(135deg, #fff 0%, var(--bai-bg) 100%);
  color: var(--bai-text);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: var(--bai-shadow);
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  z-index: 99999;
}

#blog-ai-toggle:hover {
  transform: translateY(-3px);
  border-color: var(--bai-pink);
  box-shadow: 0 16px 44px rgba(116, 192, 252, 0.28);
}

#blog-ai-toggle[aria-expanded="true"] {
  border-color: var(--bai-blue);
  opacity: 0.92;
}

#blog-ai-panel {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: min(320px, calc(100vw - 32px));
  height: 420px;
  display: flex;
  flex-direction: column;
  border: 2px solid rgba(255, 212, 59, 0.65);
  border-radius: 18px;
  background: var(--bai-bg);
  box-shadow: var(--bai-shadow);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.28s ease, transform 0.28s ease;
  z-index: 99999;
}

#blog-ai-panel.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#blog-ai-header {
  padding: 14px 16px 10px;
  background: linear-gradient(120deg, #fff3bf 0%, #ffd8e8 55%, #d0ebff 100%);
  border-bottom: 1px solid rgba(255, 143, 171, 0.25);
}

#blog-ai-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--bai-text);
}

#blog-ai-header p {
  margin: 4px 0 0;
  font-size: 12px;
  color: rgba(43, 43, 43, 0.72);
}

.blog-ai-page-hint {
  margin-top: 6px !important;
  font-size: 11px !important;
  line-height: 1.4;
  color: rgba(43, 43, 43, 0.65) !important;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

#blog-ai-quota {
  margin-top: 8px;
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  font-size: 11px;
  color: var(--bai-text);
}

#blog-ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(180deg, #fffdf6 0%, #fff8e7 100%);
}

.bai-msg {
  max-width: 88%;
  padding: 9px 12px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.55;
  word-break: break-word;
  white-space: pre-wrap;
}

.bai-msg.user {
  align-self: flex-end;
  background: rgba(116, 192, 252, 0.35);
  border: 1px solid rgba(116, 192, 252, 0.45);
  color: var(--bai-text);
  border-bottom-right-radius: 4px;
}

.bai-msg.bot {
  align-self: flex-start;
  background: rgba(255, 143, 171, 0.22);
  border: 1px solid rgba(255, 143, 171, 0.35);
  color: var(--bai-text);
  border-bottom-left-radius: 4px;
}

.bai-msg.system {
  align-self: center;
  max-width: 95%;
  background: rgba(255, 255, 255, 0.7);
  border: 1px dashed rgba(255, 212, 59, 0.6);
  font-size: 12px;
  text-align: center;
}

#blog-ai-form {
  display: flex;
  gap: 8px;
  padding: 10px 12px 12px;
  border-top: 1px solid rgba(255, 143, 171, 0.2);
  background: #fff;
}

#blog-ai-input {
  flex: 1;
  resize: none;
  min-height: 38px;
  max-height: 80px;
  padding: 8px 10px;
  border: 1.5px solid rgba(116, 192, 252, 0.45);
  border-radius: 12px;
  font-size: 13px;
  color: var(--bai-text);
  background: #fffefb;
  outline: none;
}

#blog-ai-input:focus {
  border-color: var(--bai-pink);
  box-shadow: 0 0 0 3px rgba(255, 143, 171, 0.15);
}

#blog-ai-send {
  flex-shrink: 0;
  padding: 0 14px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--bai-primary), #ffb347);
  color: var(--bai-text);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

#blog-ai-send:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

#blog-ai-send:not(:disabled):hover {
  transform: scale(1.04);
}

@media (max-width: 480px) {
  #blog-ai-toggle {
    right: 14px;
    bottom: 18px;
    font-size: 13px;
    padding: 9px 14px;
  }

  #blog-ai-panel {
    right: 14px;
    bottom: 72px;
    height: min(420px, 62vh);
  }
}