.ai-chat-layout {display:grid;grid-template-columns:250px minmax(0,1fr);gap:20px;max-width:1240px;margin:0 auto;align-items:start}
.ai-chat-panel {min-width:0;overflow:hidden}
.ai-chat-sidebar {min-width:0;overflow:hidden}
.ai-chat-sidebar h2 {margin:0}
.ai-chat-sidebar > .button {margin:16px 16px 12px;width:calc(100% - 32px)}
#ai-chat-list {padding:0 8px 12px;max-height:70dvh;overflow:auto}
.ai-chat-list-row {display:flex;align-items:stretch;min-width:0}
.ai-chat-select,.ai-chat-delete {font:inherit;border:0;background:transparent;min-height:44px;cursor:pointer;color:var(--text);border-radius:var(--control-radius,8px)}
.ai-chat-select {flex:1;min-width:0;text-align:left;padding:10px 12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ai-chat-select[aria-current],.ai-chat-select:hover {background:var(--surface-soft);color:var(--primary)}
.ai-chat-delete {flex:0 0 44px;font-size:22px;color:var(--muted)}
.ai-chat-delete:hover {color:var(--danger);background:var(--surface-soft)}
.ai-chat-select:focus-visible,.ai-chat-delete:focus-visible {outline:2px solid var(--primary);outline-offset:-2px}
#ai-chat-list .ai-chat-empty {padding:12px;font-size:13px}
.ai-chat-panel .panel-header h2 {overflow-wrap:anywhere}
.ai-chat-panel .panel-header {gap:16px;align-items:center}
.ai-chat-panel .panel-header h2 {margin:0}
.ai-chat-panel > .ai-chat-note {margin:0;max-width:none;width:100%;padding:12px 20px;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line)}
.ai-chat-messages {min-height:36vh;max-height:60dvh;overflow:auto;padding:20px;display:flex;flex-direction:column;gap:20px;overscroll-behavior:contain}
.ai-chat-empty {margin:auto;color:var(--muted);text-align:center}
.ai-chat-message {max-width:100%;align-self:flex-start;overflow-wrap:anywhere}
.ai-chat-message.is-user {align-self:flex-end;background:var(--surface-soft);padding:12px 16px;border-radius:var(--card-radius);max-width:85%}
.ai-chat-message strong {display:block;font-size:12px;margin-bottom:6px;color:var(--muted)}
.ai-chat-message p {margin:0;white-space:pre-wrap;line-height:1.6}
.ai-chat-status {margin:0;padding:0 20px;min-height:24px;color:var(--muted);font-size:13px}
.ai-chat-status.is-error {color:var(--danger)}
.ai-chat-form {padding:16px 20px 20px;display:grid;gap:12px;border-top:1px solid var(--line)}
.ai-chat-form textarea {width:100%;resize:vertical;min-height:84px;max-height:240px}
.ai-chat-send {display:flex;gap:12px;justify-content:flex-end}
.ai-chat-send .button {min-width:140px}
@media(max-width:600px) {
 .ai-chat-layout {grid-template-columns:minmax(0,1fr);gap:16px}
 #ai-chat-list {max-height:180px}
 .ai-chat-panel .panel-header {align-items:flex-start;flex-wrap:wrap}
 .ai-chat-panel > .ai-chat-note,.ai-chat-messages {padding:16px}
 .ai-chat-status {padding:0 16px}
 .ai-chat-form {padding:16px}
 .ai-chat-send .button {flex:1;min-width:0}
 .ai-chat-messages {min-height:30vh;max-height:50dvh}
 .ai-chat-message.is-user {max-width:95%}
}