:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--bg-subtle:#f9f8fc;--border:#e5e4e7;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--accent-hover:#9b2ef0;--danger:#ef4444;--danger-bg:#ef44441a;--shadow:#0000001a 0 4px 12px -2px, #0000000d 0 2px 4px -1px;--shadow-lg:#00000026 0 10px 24px -4px;--radius:12px;--radius-sm:6px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:15px/150% var(--sans);letter-spacing:.1px;color:var(--text);background:var(--bg);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--text:#9ca3af;--text-h:#f3f4f6;--bg:#0f1117;--bg-subtle:#181922;--border:#2a2b35;--accent:#c084fc;--accent-bg:#c084fc1f;--accent-border:#c084fc73;--accent-hover:#b070f0;--danger:#f87171;--danger-bg:#f871711f;--shadow:#0006 0 4px 12px -2px;--shadow-lg:#00000080 0 10px 24px -4px}}*,:before,:after{box-sizing:border-box}body{margin:0}h1,h2,h3{color:var(--text-h);margin:0;font-weight:600}p{margin:0}button{cursor:pointer;font:inherit}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}textarea,input{font:inherit}#root{flex-direction:column;width:100%;height:100svh;display:flex;overflow:hidden}.app-shell{grid-template-columns:280px 1fr;height:100svh;display:grid;overflow:hidden}@media (width<=640px){.app-shell{grid-template-columns:1fr}}.sidebar{border-right:1px solid var(--border);background:var(--bg-subtle);flex-direction:column;height:100svh;display:flex;overflow:hidden}.sidebar-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px;display:flex}.sidebar-logo{color:var(--accent);letter-spacing:-.5px;font-size:18px;font-weight:700}.new-chat-btn{border-radius:var(--radius-sm);background:var(--accent-bg);width:32px;height:32px;color:var(--accent);border:none;justify-content:center;align-items:center;transition:background .15s;display:flex}.new-chat-btn:hover{background:var(--accent-border)}.chat-list{flex:1;padding:8px 0;overflow-y:auto}.chat-list-loading,.chat-list-empty{color:var(--text);text-align:center;justify-content:center;align-items:center;padding:32px 16px;font-size:14px;line-height:1.6;display:flex}.chat-list-item{color:var(--text-h);border-radius:8px;align-items:center;gap:10px;margin:0 8px;padding:10px 14px;text-decoration:none;transition:background .12s;display:flex}.chat-list-item:hover{background:var(--border);text-decoration:none}.chat-list-item--active{background:var(--accent-bg);color:var(--accent)}.chat-list-item--active .chat-list-item__name{color:var(--accent)}.chat-list-item__avatar{background:var(--accent-bg);width:36px;height:36px;color:var(--accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:14px;font-weight:600;display:flex}.chat-list-item__body{flex:1;justify-content:space-between;align-items:baseline;gap:6px;min-width:0;display:flex}.chat-list-item__name{color:var(--text-h);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:500;overflow:hidden}.chat-list-item__time{color:var(--text);flex-shrink:0;font-size:11px}.sidebar-footer{border-top:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.sidebar-user{color:var(--text-h);text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:500;overflow:hidden}.logout-btn{color:var(--text);background:0 0;border:none;border-radius:4px;align-items:center;padding:4px;transition:color .15s;display:flex}.logout-btn:hover{color:var(--danger)}.chat-panel{background:var(--bg);flex-direction:column;height:100svh;display:flex;overflow:hidden}.chat-panel--loading,.chat-panel--empty{justify-content:center;align-items:center}.no-chat{text-align:center;color:var(--text)}.no-chat__icon{margin-bottom:16px;font-size:48px}.no-chat h2{margin-bottom:8px;font-size:20px}.no-chat p{font-size:14px}.chat-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;min-height:57px;padding:12px 20px;display:flex}.chat-header__title{align-items:center;gap:8px;min-width:0;display:flex}.chat-header__name{color:var(--text-h);white-space:nowrap;text-overflow:ellipsis;font-size:16px;font-weight:600;overflow:hidden}.chat-header__action{color:var(--text);border-radius:var(--radius-sm);background:0 0;border:none;padding:4px 8px;font-size:13px;transition:background .12s,color .12s}.chat-header__action:hover{background:var(--border);color:var(--text-h)}.chat-header__action--danger:hover{background:var(--danger-bg);color:var(--danger)}.chat-header__actions{flex-shrink:0;align-items:center;gap:4px;display:flex}.chat-header__confirm-text{color:var(--text);font-size:13px}.rename-form{align-items:center;gap:6px;display:flex}.rename-input{border:1px solid var(--accent);border-radius:var(--radius-sm);background:var(--bg);color:var(--text-h);outline:none;max-width:200px;padding:2px 8px;font-size:15px;font-weight:600}.rename-save-btn{background:var(--accent);color:#fff;border-radius:var(--radius-sm);border:none;padding:2px 8px;font-size:13px}.message-list{scroll-behavior:smooth;flex-direction:column;flex:1;gap:4px;padding:16px 20px;display:flex;overflow-y:auto}.message-list--loading{flex:1;justify-content:center;align-items:center;display:flex}.message-list__sentinel{justify-content:center;min-height:1px;padding:8px 0;display:flex}.message-list__empty{text-align:center;color:var(--text);margin:auto;font-size:14px}.message-bubble{border-radius:var(--radius);word-break:break-word;flex-direction:column;max-width:72%;padding:8px 12px;font-size:14px;line-height:1.5;display:flex;position:relative}.message-bubble+.message-bubble{margin-top:2px}.message-bubble--own{background:var(--accent);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.message-bubble--other{background:var(--bg-subtle);border:1px solid var(--border);color:var(--text-h);border-bottom-left-radius:4px;align-self:flex-start}.message-bubble--optimistic{opacity:.6}.message-bubble__sender{color:var(--accent);margin-bottom:3px;font-size:11px;font-weight:600}.message-bubble__text{white-space:pre-wrap;margin:0}.message-bubble__meta{opacity:.7;align-items:center;gap:4px;margin-top:4px;font-size:11px;display:flex}.message-bubble--own .message-bubble__meta{justify-content:flex-end}.message-bubble__edited{font-style:italic}.message-bubble__status{font-size:12px}.message-bubble__reply{border-radius:6px;align-items:flex-start;gap:8px;margin-bottom:6px;padding:4px 8px;font-size:12px;display:flex}.message-bubble--own .message-bubble__reply{background:#ffffff26}.message-bubble--other .message-bubble__reply{background:var(--border)}.message-bubble__reply--missing{opacity:.6}.message-bubble__reply-bar{background:var(--accent);border-radius:2px;flex-shrink:0;width:2px;min-height:16px}.message-bubble--own .message-bubble__reply-bar{background:#ffffffb3}.message-bubble__reply-text{text-overflow:ellipsis;-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.message-bubble__actions{background:var(--bg);border:1px solid var(--border);box-shadow:var(--shadow);z-index:10;border-radius:8px;gap:2px;padding:3px 6px;display:none;position:absolute;top:-28px;right:0}.message-bubble--own .message-bubble__actions{left:auto;right:0}.message-bubble--other .message-bubble__actions{left:0;right:auto}.message-bubble:hover .message-bubble__actions{display:flex}.msg-action-btn{color:var(--text);background:0 0;border:none;border-radius:4px;padding:2px 5px;font-size:13px;transition:background .1s}.msg-action-btn:hover{background:var(--border)}.msg-action-btn--danger:hover{background:var(--danger-bg);color:var(--danger)}.message-edit-input{border:1px solid var(--accent);border-radius:var(--radius-sm);background:var(--bg);width:100%;min-width:200px;color:var(--text-h);resize:none;outline:none;padding:4px 8px;font-size:14px;line-height:1.5}.message-edit-actions{gap:6px;margin-top:6px;display:flex}.edit-save-btn{background:var(--accent);color:#fff;border:none;border-radius:4px;padding:2px 10px;font-size:12px}.edit-cancel-btn{border:1px solid var(--border);color:var(--text);background:0 0;border-radius:4px;padding:2px 10px;font-size:12px}.message-input-area{border-top:1px solid var(--border);background:var(--bg);flex-shrink:0;padding:12px 16px}.message-input-row{background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--radius);align-items:flex-end;gap:10px;padding:8px 12px;transition:border-color .15s;display:flex}.message-input-row:focus-within{border-color:var(--accent)}.message-input{resize:none;color:var(--text-h);background:0 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2px;font-size:12px;line-height:1}.reply-preview__clear:hover{color:var(--text-h)}.auth-page{background:var(--bg);justify-content:center;align-items:center;min-height:100svh;padding:20px;display:flex}.auth-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);width:100%;max-width:380px;box-shadow:var(--shadow-lg);padding:40px 36px}.auth-logo{color:var(--accent);letter-spacing:-.5px;margin-bottom:8px;font-size:24px;font-weight:800}.auth-title{color:var(--text-h);margin-bottom:24px;font-size:22px}.auth-form{flex-direction:column;gap:14px;display:flex}.auth-error{color:var(--danger);background:var(--danger-bg);border-radius:var(--radius-sm);padding:8px 12px;font-size:13px}.auth-submit{width:100%;margin-top:4px}.auth-link{text-align:center;color:var(--text);margin-top:20px;font-size:13px}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;gap:6px;font-weight:500;transition:background .15s,opacity .15s,box-shadow .15s;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--md{padding:9px 18px;font-size:14px}.btn--sm{padding:5px 12px;font-size:13px}.btn--primary{background:var(--accent);color:#fff}.btn--primary:hover:not(:disabled){background:var(--accent-hover)}.btn--ghost{color:var(--text-h);border:1px solid var(--border);background:0 0}.btn--ghost:hover:not(:disabled){background:var(--border)}.btn--danger{background:var(--danger);color:#fff}.btn--danger:hover:not(:disabled){opacity:.85}.input-group{flex-direction:column;gap:5px;display:flex}.input-label{color:var(--text-h);font-size:13px;font-weight:500}.input{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);width:100%;color:var(--text-h);outline:none;padding:9px 12px;font-size:14px;transition:border-color .15s}.input:focus{border-color:var(--accent)}.input--error{border-color:var(--danger)}.input-error-msg{color:var(--danger);font-size:12px}.spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:.7s linear infinite spin;display:inline-block}.spinner--sm{width:14px;height:14px}.spinner--md{width:24px;height:24px}.spinner--lg{border-width:3px;width:36px;height:36px}@keyframes spin{to{transform:rotate(360deg)}}.modal-backdrop{z-index:100;background:#00000073;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);outline:none;flex-direction:column;width:100%;max-width:440px;max-height:90svh;display:flex;overflow:hidden}.modal-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-title{font-size:16px}.modal-close{color:var(--text);background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;display:flex}.modal-close:hover{background:var(--border)}.modal-body{flex-direction:column;gap:14px;padding:20px;display:flex;overflow-y:auto}.modal-actions{justify-content:flex-end;gap:8px;padding-top:4px;display:flex}.tab-bar{background:var(--bg-subtle);border-radius:var(--radius-sm);gap:4px;padding:4px;display:flex}.tab-btn{color:var(--text);background:0 0;border:none;border-radius:4px;flex:1;padding:6px;font-size:13px;font-weight:500;transition:background .12s,color .12s}.tab-btn--active{background:var(--bg);color:var(--text-h);box-shadow:var(--shadow)}.user-results{border:1px solid var(--border);border-radius:var(--radius-sm);max-height:200px;margin:0;padding:0;list-style:none;overflow:hidden auto}.user-results__hint{color:var(--text);padding:10px 12px;font-size:13px}.user-result-btn{text-align:left;width:100%;color:var(--text-h);background:0 0;border:none;align-items:center;gap:8px;padding:9px 12px;font-size:14px;transition:background .1s;display:flex}.user-result-btn:hover{background:var(--bg-subtle)}.user-result-btn--selected{background:var(--accent-bg);color:var(--accent)}.user-result-avatar{background:var(--accent-bg);width:28px;height:28px;color:var(--accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:600;display:flex}.selected-users{flex-wrap:wrap;gap:6px;display:flex}.selected-tag{background:var(--accent-bg);color:var(--accent);border-radius:20px;align-items:center;gap:5px;padding:3px 10px 3px 8px;font-size:12px;font-weight:500;display:inline-flex}.selected-tag button{color:var(--accent);background:0 0;border:none;padding:0;font-size:11px;line-height:1}