/* ==========================================================================
   1. AI UI COMPONENTS (Extracted from theme-ui.css)
   ========================================================================== */



.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--glass-border);
}


.chat-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 6px;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
}


.msg {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 10px 0;
  padding: 12px 12px;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: var(--edge-blur);
  -webkit-backdrop-filter: var(--edge-blur);
}


/* 已通过 box-shadow 替代高光伪元素 */

.msg .meta {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  flex-wrap: wrap;
}


.msg .who {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}


.msg .time {
  font-size: 11px;
  color: var(--text-muted);
}


.msg .content {
  word-break: break-word;
  line-height: 1.6;
  color: var(--text-secondary);
  font-size: 14px;
}


.msg .content p {
  margin: 0.5em 0;
}


.msg .content p:first-child {
  margin-top: 0;
}


.msg .content p:last-child {
  margin-bottom: 0;
}


.msg .content code {
  background: var(--glass-bg);
  padding: 2px 6px;
  border-radius: 40px;
  font-family: ui-monospace, 'Cascadia Code', 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.9em;
  color: var(--text-primary);
}


.msg .content pre {
  background: #0d1117;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 16px;
  overflow-x: auto;
  margin: 0.8em 0;
}


.msg .content pre code {
  background: transparent;
  color: #e6edf3;
  padding: 0;
  border-radius: 0;
  font-size: 0.85em;
  line-height: 1.5;
  display: block;
}


.msg .content h1,
.msg .content h2,
.msg .content h3,
.msg .content h4 {
  margin: 0.8em 0 0.4em 0;
  color: var(--text-primary);
  font-weight: 600;
}


.msg .content h1 {
  font-size: 1.5em;
}


.msg .content h2 {
  font-size: 1.3em;
}


.msg .content h3 {
  font-size: 1.15em;
}


.msg .content h4 {
  font-size: 1.05em;
}


.msg .content ul,
.msg .content ol {
  margin: 0.5em 0;
  padding-left: 1.5em;
}


.msg .content li {
  margin: 0.3em 0;
}


.msg .content blockquote {
  border-left: 3px solid var(--primary-color);
  padding-left: 12px;
  margin: 0.8em 0;
  color: var(--text-secondary);
  font-style: italic;
}


.msg .content table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.8em 0;
}


.msg .content table th,
.msg .content table td {
  border: 1px solid var(--glass-border);
  padding: 8px 12px;
  text-align: left;
}


.msg .content table th {
  background: var(--glass-bg-hover);
  font-weight: 600;
}


.msg .content a {
  color: var(--primary-color);
  text-decoration: none;
}


.msg .content a:hover {
  text-decoration: underline;
}


.msg.user .content {
  white-space: pre-wrap;
}


.msg.user .who {
  color: var(--accent-color);
}


.msg.ai .who {
  color: var(--secondary-color);
}


.msg.system .who {
  color: var(--quaternary-color);
}


.composer {
  display: flex;
  gap: 12px;
  align-items: stretch;
}


.composer textarea {
  flex: 1;
  height: 90px;
  resize: none;
  border-radius: 20px;
  padding: 12px;
  font-size: 14px;
  line-height: 1.45;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}


.composer .right {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: space-between;
  width: 80px;
}


.composer .right button {
  margin-top: 0;
  padding: 5px 5px;
  border-radius: 40px;
  font-size: 15px;
  flex: 1;
  background: var(--primary-color);
  border: none;
  color: var(--bg-base);
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 700;
}


.composer .right button:hover {
  transform: scale(1.05);
  box-shadow: var(--mystic-shadow);
}


.composer .right button:active {
  transform: scale(1.0);
}


.composer .right button.secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}


.composer .right button.secondary:hover {
  background: var(--glass-bg-hover);
  transform: scale(1.04);
}


.composer .right button.danger {
  background: var(--glass-bg);
  color: var(--quaternary-color);
  border: 1px solid var(--glass-border);
}


.composer .right button.danger:hover {
  background: var(--glass-bg-hover);
  transform: scale(1.04);
}


/* 动态省略号动画 */
.typing-indicator {
  display: inline-block;
}


.typing-indicator span {
  opacity: 0;
  animation: typing 1.4s infinite;
  animation-fill-mode: both;
}


.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}


.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}