.chat{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr);height:100%;min-width:0;padding:0 12px 12px;background:0 0}.chat-header{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px;padding:12px 16px;border-bottom:1px solid var(--global-line-subtle)}.chat-identity{flex:1;min-width:0}.chat-back{display:inline-flex;align-items:center;flex-shrink:0;gap:8px;min-height:44px;color:var(--global-green);font-family:var(--global-font-mono);font-size:.8rem}.chat-back::before{content:"";width:7px;height:7px;border-bottom:1.5px solid currentColor;border-left:1.5px solid currentColor;transform:rotate(45deg)}.chat-project{margin:0 0 6px;color:var(--global-ink-muted);font-family:var(--global-font-mono);font-size:.75rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-title{margin:0;color:var(--global-ink);font-family:var(--global-font-mono);font-size:1rem;font-weight:600;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-workspace{position:relative;display:grid;grid-template-columns:minmax(0,1fr) clamp(280px,25vw,360px);min-height:0;min-width:0}.chat-content,.chat-session{height:100%;min-width:0;min-height:0;overflow:hidden}.chat-content[inert]{pointer-events:none;visibility:hidden}.chat-empty{display:grid;place-content:center;height:100%;padding:24px;text-align:center;color:var(--global-ink-soft);line-height:1.6}.chat-empty-error,.chat-empty-message{margin:0;overflow-wrap:anywhere}.chat-account-error,.chat-empty-error{color:var(--global-coral)}.chat-account-error{margin:8px 0 0;font-size:.8rem;line-height:1.4}.chat-sessions-toggle{display:none;align-items:center;justify-content:center;gap:8px;flex-shrink:0;min-height:44px;padding:10px 12px;border:1px solid var(--global-line);border-radius:var(--global-control-radius);background:var(--global-green-dim);color:var(--global-green);font-family:var(--global-font-mono);font-size:.8rem}.chat-sessions-toggle::before{content:"";width:14px;height:14px;border:1px solid currentColor;border-right-width:5px;border-radius:2px}@media (max-width:760px){.chat{padding:0}.chat-header{gap:10px;min-height:72px;padding:10px 14px}.chat-workspace{grid-template-columns:minmax(0,1fr)}.chat-sessions-toggle{display:inline-flex}}