:root{--bg: #f4efe4;--bg-layer: #e9ddca;--surface: #fffdf8;--ink: #1f2d2a;--subtle: #55635f;--accent: #0f766e;--accent-soft: #daf5f1;--danger: #9f3434;--line: #d8ccb8}*{box-sizing:border-box}body{margin:0;font-family:Space Grotesk,sans-serif;color:var(--ink);background:var(--surface)}.page-shell{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;gap:10px;border-bottom:1px solid var(--line)}.topbar-collapse-btn{margin-right:auto;border:none;background:transparent;padding:4px 8px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;min-width:32px;min-height:32px;flex-shrink:0}.collapse-icon{width:8px;height:8px;border-top:2px solid var(--ink);border-right:2px solid var(--ink);transform:rotate(-135deg);transition:transform .18s ease}.collapse-icon.collapsed{transform:rotate(45deg)}.brand-dot{width:18px;height:18px;border-radius:50%;background:linear-gradient(145deg,#0f766e,#f08d49);box-shadow:0 0 0 5px #f08d4933;flex-shrink:0}.topbar-end{display:flex;align-items:center;gap:10px;overflow:hidden}.topbar-end button{flex-shrink:0;white-space:nowrap}.voice-select{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:4px 8px;font-size:13px;width:200px;min-width:0px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}.auth-brand h1{margin:0;font-size:22px;letter-spacing:.5px}.auth-brand p{margin:2px 0 0;color:var(--subtle);font-size:12px}.sidebar-brand{display:flex;align-items:center;gap:12px;padding:14px 12px}.sidebar-brand h1{margin:0;font-size:20px;letter-spacing:.5px}.sidebar-brand 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ease}.conversation-panel.collapsed{margin-left:-260px}.mobile-backdrop{display:none}@media (max-width: 768px){.conversation-panel{position:fixed;left:0;top:0;height:100vh;z-index:100;margin-left:0;transition:transform .2s ease}.conversation-panel.collapsed{margin-left:0;transform:translate(-100%)}.mobile-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:99}.conversation-panel.collapsed~.mobile-backdrop{display:none}.chat-layout-content{transition:transform .2s ease}.conversation-panel:not(.collapsed)~.chat-layout-content{transform:translate(260px)}.conversation-item{min-width:220px}.bubble,.correction-box{max-width:95%}.topbar-end button{font-size:12px;padding:6px 10px}}.chat-layout-content{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden}.chat-panel{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0}.panel-head{display:flex;justify-content:space-between;align-items:center;padding:12px;border-bottom:1px 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button{flex-shrink:0}.send-btn{flex:0 0 auto;min-width:88px;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:6px 18px;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.send-btn:disabled{opacity:.4;cursor:not-allowed}.icp-footer{text-align:center;padding:4px 20px;font-size:11px;line-height:1;flex-shrink:0}.icp-footer a{color:var(--subtle);text-decoration:none}.icp-footer a:hover{text-decoration:underline}.selection-toolbar{position:absolute;z-index:22;display:flex;gap:4px;animation:popIn .14s ease-out;white-space:nowrap}.selection-btn{background:#1f2d2a;color:#fff;border:none;border-radius:8px;padding:6px 10px;font-weight:600;cursor:pointer;font-size:13px;white-space:nowrap}.selection-btn:hover{opacity:.85}.translation-popup{position:absolute;z-index:23;width:300px;background:#162521;color:#fff;border-radius:12px;padding:12px;box-shadow:0 10px 28px #0003}.translation-popup h4{margin:0 0 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