:root{color-scheme:dark;--bg:#030303;--main:#08080a;--sidebar:rgba(13,13,16,0.82);--surface:rgba(24,24,28,0.6);--surface-2:rgba(32,32,38,0.8);--hover:rgba(255,255,255,0.06);--line:rgba(255,255,255,0.08);--text:#f8fafc;--muted:#94a3b8;--soft:#64748b;--primary:#10b981;--primary-glow:rgba(16,185,129,0.15);--danger:#ef4444;--shadow:rgba(0,0,0,0.6);font-family:"Inter","Söhne",ui-sans-serif,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);overflow-x:hidden;position:relative}body::before{content:"";position:fixed;inset:0;background:radial-gradient(circle at 15% 15%,rgba(16,185,129,0.04) 0%,transparent 40%),radial-gradient(circle at 85% 85%,rgba(59,130,246,0.04) 0%,transparent 40%),radial-gradient(circle at 50% 50%,rgba(0,0,0,0) 0%,var(--bg) 100%);pointer-events:none;z-index:-1}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.app{display:grid;grid-template-columns:0 minmax(0,1fr);height:100vh;height:100dvh;overflow:hidden;background:var(--main);transition:grid-template-columns 0.3s ease}.app.sidebar-open{grid-template-columns:260px minmax(0,1fr)}.sidebar{position:relative;z-index:20;display:flex;width:260px;min-width:0;height:100%;flex-direction:column;gap:12px;overflow:hidden;border-right:1px solid var(--line);background:var(--sidebar);padding:12px;transition:transform 0.3s ease,width 0.3s ease,padding 0.3s ease,opacity 0.3s ease;backdrop-filter:blur(20px)}.app:not(.sidebar-open) .sidebar{width:0;padding:0;border-right:0;opacity:0;transform:translateX(-20px)}.sidebar-head{display:flex;align-items:center;justify-content:flex-start;min-height:42px}.brand{display:flex;align-items:center;width:42px;height:42px;color:inherit;text-decoration:none}.brand-logo{width:36px;height:36px;object-fit:contain;filter:drop-shadow(0 0 12px var(--primary-glow));transition:transform 0.3s ease}.brand:hover .brand-logo{transform:scale(1.1) rotate(5deg)}.sidebar-toggle{display:grid;place-items:center;width:36px;height:36px;border:0;border-radius:8px;background:transparent;color:var(--muted);cursor:pointer;font-size:18px}.sidebar-toggle:hover{background:var(--hover);color:var(--text)}.new-chat{display:flex;align-items:center;gap:10px;width:100%;min-height:42px;border:0;border-radius:8px;background:var(--surface);color:var(--text);cursor:pointer;padding:0 10px;text-align:left;font-weight:500}.new-chat:hover{background:var(--hover)}.new-chat svg{width:19px;height:19px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2}.sidebar-label{margin:10px 8px 2px;color:var(--soft);font-size:12px;font-weight:700}.chat-list{display:flex;flex:1;flex-direction:column;gap:2px;overflow:auto;padding-right:2px}.chat-list{display:flex;flex-direction:column;gap:4px}.chat-item{position:relative;display:flex;align-items:center;border-radius:8px;transition:background 0.2s ease}.chat-item a{flex:1;overflow:hidden;color:var(--text);padding:10px;text-decoration:none;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.chat-item:hover,.chat-item.active{background:var(--hover)}.chat-item-actions{position:relative;padding-right:6px;opacity:0;transition:opacity 0.2s}.chat-item:hover .chat-item-actions,.chat-item.active .chat-item-actions{opacity:1}.chat-menu-btn{display:grid;place-items:center;width:28px;height:28px;border:0;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer}.chat-menu-btn:hover{background:rgba(255,255,255,0.1);color:var(--text)}.chat-dropdown{position:absolute;top:100%;right:0;z-index:50;min-width:130px;margin-top:4px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2);box-shadow:0 4px 20px rgba(0,0,0,0.4);opacity:0;visibility:hidden;transform:translateY(-5px) scale(0.95);transition:all 0.2s cubic-bezier(0.16,1,0.3,1);transform-origin:top right}.chat-dropdown.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.delete-chat-btn{display:flex;align-items:center;gap:8px;width:100%;border:0;background:transparent;color:var(--danger);padding:10px 14px;cursor:pointer;font-size:13px;text-align:left;transition:background 0.2s}.delete-chat-btn:hover{background:rgba(255,107,107,0.1)}.account{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding:12px 4px 2px}.avatar,.message-avatar{display:grid;place-items:center;flex:0 0 auto;width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,#343541 0%,#1e1e24 100%);color:var(--text);font-size:13px;font-weight:700;box-shadow:0 4px 12px rgba(0,0,0,0.2)}.account strong{display:block;max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.logout{color:var(--muted);text-decoration:none;font-size:12px}.logout:hover{color:var(--danger)}.scrim{display:none}.chat{display:grid;grid-template-rows:auto minmax(0,1fr) auto;min-width:0;height:100%;background:transparent;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;padding:10px 20px;background:rgba(8,8,10,0.4);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}.topbar h1{max-width:min(56vw,680px);overflow:hidden;margin:0;text-overflow:ellipsis;white-space:nowrap;font-size:18px;font-weight:700}.topbar-model{border:1px solid var(--line);border-radius:999px;color:var(--muted);padding:6px 10px;font-size:13px}.messages{overflow-y:auto;min-height:0;padding:18px 18px 28px;scroll-padding-bottom:28px;overscroll-behavior:contain}.empty{display:grid;place-items:center;align-content:center;min-height:calc(100vh - 230px);text-align:center}.empty img{width:78px;height:78px;object-fit:contain;margin-bottom:24px}.empty h2{margin:0;color:var(--text);font-size:clamp(26px,4vw,34px);font-weight:650}@keyframes slideUpFade{0%{opacity:0;transform:translateY(15px)}100%{opacity:1;transform:translateY(0)}}.message{width:100%;animation:slideUpFade 0.4s cubic-bezier(0.16,1,0.3,1) forwards}.message-inner{display:flex;align-items:flex-start;gap:14px;max-width:780px;margin:0 auto;padding:15px 0}.message.user .message-inner{justify-content:flex-end}.message.user .message-avatar{display:none}.message-avatar img{width:22px;height:22px;object-fit:contain}.message-body{min-width:0;max-width:100%}.message.user .message-body{display:flex;flex-direction:column;align-items:flex-end;width:100%}.bubble{max-width:100%;color:var(--text);line-height:1.65;overflow-wrap:anywhere;font-size:15px}.markdown-body{display:flex;flex-direction:column;gap:0.8em}.markdown-body p{margin:0}.markdown-body pre{margin:0}.code-block{margin:12px 0;border-radius:12px;background:#0d1117;border:1px solid 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0;max-width:680px}.message.error .bubble{border:1px solid rgba(255,107,107,0.35);border-radius:12px;background:rgba(255,107,107,0.08);color:var(--danger);padding:12px 14px}.message-image{display:block;width:min(420px,100%);max-height:360px;object-fit:contain;border:1px solid var(--line);border-radius:14px;margin-bottom:10px;background:#050505}time{display:none;margin-top:7px;color:var(--soft);font-size:11px}.message.user time{padding-right:8px}.composer-shell{position:relative;z-index:5;flex:0 0 auto;padding:18px 18px 22px;background:linear-gradient(to top,var(--main) 76%,rgba(11,11,12,0))}.drop-overlay{position:fixed;inset:0;z-index:80;display:grid;place-items:center;pointer-events:none;background:rgba(0,0,0,0.62);color:var(--text);font-size:22px;font-weight:650;opacity:0;transform:scale(1.02);transition:opacity 0.18s ease,transform 0.18s ease;backdrop-filter:blur(8px)}.drop-overlay.show{opacity:1;transform:scale(1)}.composer{position:relative;display:flex;flex-direction:column;max-width:780px;min-height:54px;margin:0 auto;border:1px solid var(--line);border-radius:27px;background:var(--surface-2);backdrop-filter:blur(16px);box-shadow:0 18px 45px var(--shadow),inset 0 1px 0 rgba(255,255,255,0.04);transition:border-color 0.18s ease,box-shadow 0.18s ease,transform 0.18s ease}.composer-inner{display:grid;grid-template-columns:38px minmax(0,1fr) 38px;align-items:flex-end;gap:12px;padding:8px}.composer:focus-within{border-color:#4a4b52;box-shadow:0 22px 55px rgba(0,0,0,0.58),inset 0 1px 0 rgba(255,255,255,0.05);transform:translateY(-1px)}.composer textarea{width:100%;min-height:38px;max-height:180px;resize:none;border:0;outline:0;background:transparent;color:var(--text);padding:9px 4px;line-height:1.35}.composer textarea::placeholder{color:var(--muted)}.attach-button,.send-button{display:grid;place-items:center;width:38px;height:38px;border:0;border-radius:50%;cursor:pointer}.attach-wrap{position:relative}.attach-button{border:1px solid #4a4b52;background:rgba(255,255,255,0.03);color:var(--muted);transition:background 0.18s ease,border-color 0.18s ease,color 0.18s ease,transform 0.18s ease}.attach-button svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.4}.attach-button:hover{background:rgba(255,255,255,0.08);color:var(--text);border-color:#6a6b72;transform:scale(1.04)}.attach-wrap:has(.attach-menu.open) .attach-button{background:#2f3036;border-color:#8b8c94;transform:rotate(45deg)}.attach-menu{position:absolute;bottom:calc(100% + 10px);left:0;z-index:30;display:grid;min-width:190px;border:1px solid #363740;border-radius:16px;background:rgba(32,32,36,0.96);padding:8px;box-shadow:0 22px 60px rgba(0,0,0,0.62),inset 0 1px 0 rgba(255,255,255,0.04);opacity:0;pointer-events:none;transform:translateY(10px) scale(0.96);transform-origin:bottom left;transition:opacity 0.16s ease,transform 0.16s ease;backdrop-filter:blur(14px)}.attach-menu.open{opacity:1;pointer-events:auto;transform:translateY(0) scale(1)}.attach-menu label{display:flex;align-items:center;gap:10px;min-height:40px;border-radius:12px;color:var(--text);cursor:pointer;padding:0 11px;font-size:14px;transition:background 0.15s ease,transform 0.15s ease}.attach-menu label:hover{background:#303137;transform:translateX(2px)}.attach-menu input{display:none}.menu-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;background:#141416;color:#e4e4e7}.menu-icon svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.8}.attachments-container{grid-column:1 / -1;display:flex;flex-wrap:wrap;gap:10px;padding:2px 4px 10px;max-height:200px;overflow-y:auto}.attachments-container[hidden]{display:none}.attachment-card{display:flex;align-items:center;gap:12px;width:min(240px,100%);background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:10px;position:relative;animation:fadeIn 0.2s ease}.card-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:#4a4b52;color:#fff;font-size:10px;font-weight:800;flex-shrink:0}.card-info{display:flex;flex-direction:column;min-width:0;flex:1}.card-name{color:var(--text);font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-size{color:var(--muted);font-size:11px}.card-remove{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border:0;border-radius:50%;background:#000;color:#fff;cursor:pointer;font-size:14px;display:grid;place-items:center;box-shadow:0 2px 6px rgba(0,0,0,0.3);transition:transform 0.15s ease}.card-remove:hover{transform:scale(1.1);background:var(--danger)}@keyframes fadeIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.send-button{background:linear-gradient(180deg,#ffffff,#e4e4e7);color:#0b0b0c;font-weight:800;box-shadow:0 6px 16px rgba(255,255,255,0.08);transition:transform 0.16s ease,filter 0.16s ease,box-shadow 0.16s ease}.send-button svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.4}.send-button:hover{filter:brightness(1.1);box-shadow:0 8px 22px rgba(255,255,255,0.12);transform:translateY(-1px) scale(1.04)}.send-button:active,.attach-button:active{transform:scale(0.96)}.send-button:disabled{cursor:wait;opacity:0.55;transform:none}.file-chip{display:inline-flex;align-items:center;gap:10px;max-width:min(420px,100%);border:1px solid var(--line);border-radius:14px;background:var(--surface-2);color:var(--text);padding:10px 12px;text-decoration:none;margin-bottom:10px}.file-chip strong,.file-chip small{display:block;max-width:310px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-chip small{color:var(--muted);font-size:12px}.file-icon{display:grid;place-items:center;width:38px;height:34px;border-radius:10px;background:var(--hover);color:var(--muted);font-size:10px;font-weight:700;letter-spacing:0}.auth-page{display:grid;min-height:100vh;place-items:center;padding:80px 24px 24px;background:var(--main)}.auth-shell{width:min(100%,460px)}.auth-panel{display:grid;gap:22px;border:1px solid var(--line);border-radius:18px;background:rgba(24,24,27,0.78);padding:30px;box-shadow:0 24px 70px var(--shadow)}.auth-panel>div:first-child{text-align:center}.auth-logo{display:block;width:92px;height:92px;object-fit:contain;margin:0 auto 16px}.auth-panel h1{margin:0;font-size:28px;font-weight:650}.muted{color:var(--muted)}.auth-form{display:grid;gap:14px}.mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;border-radius:12px;background:var(--main);padding:4px}.mode-tabs a{display:grid;place-items:center;min-height:40px;border-radius:10px;color:var(--muted);font-weight:500;text-decoration:none}.mode-tabs a.active{background:var(--surface-2);color:var(--text)}.auth-form label{display:grid;gap:7px;font-weight:550;font-size:14px}.auth-form input{width:100%;min-height:46px;border:1px solid var(--line);border-radius:12px;outline:none;background:var(--main);color:var(--text);padding:10px 13px}.auth-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,195,125,0.16)}.auth-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:4px}.primary,.secondary{display:grid;min-height:44px;place-items:center;border:0;border-radius:12px;cursor:pointer;font-weight:600;text-decoration:none}.primary{background:var(--text);color:#000}.secondary{background:var(--surface-2);color:var(--text)}.alert{border:1px solid rgba(255,107,107,0.35);border-radius:12px;background:rgba(255,107,107,0.08);color:var(--danger);padding:12px}@media (max-width:860px){.app,.app.sidebar-open{grid-template-columns:1fr}.sidebar{position:fixed;inset:0 auto 0 0;transform:translateX(-260px)}.app.sidebar-open .sidebar{transform:translateX(0)}.app.sidebar-open .scrim{position:fixed;inset:0;z-index:10;display:block;background:rgba(0,0,0,0.45)}.topbar{padding-inline:12px}.topbar-model{display:none}.messages{padding-inline:16px}.message-inner{gap:10px}.message.user .bubble{max-width:92%}.composer-shell{padding-inline:12px}}@media (max-width:640px){body{min-height:100svh}.chat{height:100%;grid-template-rows:52px minmax(0,1fr) auto}.topbar{min-height:52px;padding:8px 10px;border-bottom:1px solid rgba(255,255,255,0.06)}.topbar-left{gap:8px}.topbar h1{max-width:calc(100vw - 72px);font-size:16px}.sidebar-toggle{width:36px;height:36px}.messages{padding:10px 12px 132px}.empty{min-height:calc(100svh - 210px);padding:0 18px}.empty img{width:62px;height:62px;margin-bottom:18px}.empty h2{font-size:26px}.message-inner{max-width:100%;gap:10px;padding:12px 0}.message-avatar{width:28px;height:28px}.message-avatar img{width:20px;height:20px}.bubble{font-size:15px;line-height:1.58}.message.user .bubble{max-width:86%;border-radius:18px;padding:9px 13px}.message.assistant .bubble{max-width:calc(100vw - 72px)}.message-image{width:min(320px,100%);max-height:300px;border-radius:12px}.composer-shell{padding:10px 8px max(10px,env(safe-area-inset-bottom))}.composer{grid-template-columns:36px minmax(0,1fr) 36px;min-height:52px;border-radius:26px;padding:7px;gap:7px}.composer textarea{min-height:36px;max-height:132px;padding:8px 2px;font-size:16px}.attach-button,.send-button{width:36px;height:36px}.attach-button{font-size:25px}.send-button svg{width:18px;height:18px}.attach-menu{left:0;min-width:178px;border-radius:14px}.attachment-pill{padding:7px 9px;font-size:12px}.file-chip{max-width:100%;padding:9px 10px}.file-chip strong,.file-chip small{max-width:220px}.auth-page{align-items:start;padding:18px 12px}.auth-shell{width:100%;margin-top:18px}.auth-panel{gap:18px;border-radius:16px;padding:22px 16px}.auth-logo{width:72px;height:72px;margin-bottom:12px}.auth-panel h1{font-size:24px}.auth-actions{grid-template-columns:1fr}}.attachments-container{display:flex;flex-wrap:wrap;gap:8px;min-width:0;padding:12px 12px 0;max-height:200px;overflow-y:auto}.attachments-container[hidden]{display:none}.attachment-card{display:flex;align-items:center;gap:12px;width:max-content;max-width:240px;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:8px 10px;position:relative;animation:fadeIn 0.2s ease;box-shadow:0 4px 12px rgba(0,0,0,0.2)}.card-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:8px;color:#fff;flex-shrink:0}.card-icon.image-icon{background:linear-gradient(135deg,#10b981,#059669)}.card-icon.doc-icon{background:linear-gradient(135deg,#3b82f6,#2563eb)}.card-info{display:flex;flex-direction:column;min-width:0;flex:1}.card-name{color:var(--text);font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.2;margin-bottom:2px}.card-size{color:var(--muted);font-size:11px;line-height:1.2}.card-remove{display:grid;place-items:center;width:24px;height:24px;border:0;border-radius:50%;background:rgba(255,255,255,0.08);color:var(--muted);cursor:pointer;flex-shrink:0;transition:all 0.2s ease}.card-remove:hover{background:var(--danger);color:#fff;transform:scale(1.1)}@media (max-width:380px){.sidebar{min-width:min(260px,86vw);width:min(260px,86vw)}.app:not(.sidebar-open) .sidebar{transform:translateX(-86vw)}.topbar h1{max-width:calc(100vw - 64px)}.message.user .bubble{max-width:92%}}:root{--bg:#0b0d10;--main:#0f1216;--sidebar:#11151a;--surface:#171b21;--surface-2:#1d232b;--hover:#242b34;--line:#2a313b;--text:#f4f7fb;--muted:#aab4c0;--soft:#7d8996;--primary:#d94b3d;--primary-glow:rgba(217,75,61,0.22);--danger:#ff6b5f;--shadow:rgba(0,0,0,0.42);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}body::before{display:none}.app{background:var(--main)}.sidebar{border-right-color:#242b34;background:var(--sidebar);box-shadow:inset -1px 0 0 rgba(255,255,255,0.02)}.brand-logo{filter:drop-shadow(0 0 10px var(--primary-glow))}.new-chat{border:1px solid transparent;background:#171c22;color:#d8dee7;font-weight:650}.new-chat:hover{border-color:#343d49;background:#202730;color:#ffffff}.sidebar-label{color:#8894a2;letter-spacing:0;text-transform:none}.chat-list{gap:6px}.chat-item{border:1px solid transparent;border-radius:8px}.chat-item a{color:#cfd7e2;font-weight:560}.chat-item:hover,.chat-item.active{border-color:#2f3844;background:#1a2027}.chat-item.active a{color:#ffffff}.chat-menu-btn:hover{background:#2a323c}.chat-dropdown{min-width:148px;border-color:#343d49;background:#1a2027;box-shadow:0 18px 50px rgba(0,0,0,0.38)}.delete-chat-btn{color:#ff8178;font-weight:650}.delete-chat-btn:hover{background:rgba(255,107,95,0.12)}.account{border-top-color:#252d37}.avatar,.message-avatar{border:1px solid #313a46;border-radius:8px;background:#202731;box-shadow:none}.chat{background:linear-gradient(180deg,#101319 0%,#0d1014 100%)}.topbar{min-height:58px;border-bottom-color:#242b34;background:rgba(15,18,22,0.94);backdrop-filter:blur(14px)}.sidebar-toggle{border:1px solid transparent;border-radius:8px;color:#aab4c0}.sidebar-toggle:hover{border-color:#343d49;background:#1b2129}.topbar h1{color:#f4f7fb;font-size:17px;font-weight:720}.messages{padding:20px clamp(18px,4vw,54px) 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