:root{--bg-base: #ffffff;--bg-surface: #f8fafc;--bg-sidebar: #f8f8f8;--bg-input: #ffffff;--bg-hover: #f1f5f9;--bg-user-msg: #f8fafc;--bg-ai-msg: #ffffff;--bg-ref: #fafbfd;--bg-thinking: #fafbfd;--bg-auth: #ffffff;--bg-mark: #0f172a;--bg-send: #0f172a;--bg-send-hover: #1e293b;--text-primary: #0f172a;--text-secondary:#374151;--text-muted: #64748b;--text-faint: #94a3b8;--text-mark: #ffffff;--border-soft: #e2e8f0;--border-med: #cbd5e1;--accent: #3b82f6;--accent-bg: #eff6ff;--accent-border: #dbeafe;--accent-text: #1d4ed8;--accent-muted: #93c5fd;--err-bg: #fef2f2;--err-border: #fecaca;--err-text: #dc2626;--green: #22c55e;--green-bg: #dcfce7}[data-theme=dark]{--bg-base: #111111;--bg-surface: #1a1a1a;--bg-sidebar: #161616;--bg-input: #222222;--bg-hover: #222222;--bg-user-msg: #1e1e1e;--bg-ai-msg: #1a1a1a;--bg-ref: #181818;--bg-thinking: #1a1a1a;--bg-auth: #1e1e1e;--bg-mark: #f0f0f0;--bg-send: #f0f0f0;--bg-send-hover: #d4d4d4;--text-primary: #f0f0f0;--text-secondary:#d4d4d4;--text-muted: #737373;--text-faint: #525252;--text-mark: #111111;--border-soft: #2a2a2a;--border-med: #333333;--accent: #3b82f6;--accent-bg: #172035;--accent-border: #1e3a5f;--accent-text: #60a5fa;--accent-muted: #1d4ed8;--err-bg: #2a1515;--err-border: #5c2020;--err-text: #f87171;--green: #22c55e;--green-bg: #14532d}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,sans-serif;background:var(--bg-surface);color:var(--text-primary);-webkit-font-smoothing:antialiased;transition:background .2s,color .2s}#root:has(.app){height:100%;overflow:hidden}button{font-family:inherit;cursor:pointer}textarea{font-family:inherit}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-soft);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-med)}.app{display:flex;height:100%}.sidebar{width:256px;flex-shrink:0;background:var(--bg-sidebar);border-right:.5px solid var(--border-soft);display:flex;flex-direction:column;height:100%;overflow:hidden;transition:width .25s cubic-bezier(.16,1,.3,1)}.sidebar.closed{width:0;min-width:0;overflow:hidden}.sb-brand{padding:16px 16px 14px;border-bottom:.5px solid var(--border-soft);flex-shrink:0}.brand-row{display:flex;align-items:center;gap:10px}.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--bg-mark);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:var(--text-mark);letter-spacing:.02em;flex-shrink:0}.brand-name{font-size:13.5px;font-weight:600;color:var(--text-primary)}.brand-sub{font-size:11px;color:var(--text-faint);margin-top:1px}.new-chat-btn{display:flex;align-items:center;gap:8px;margin:12px 12px 0;padding:8px 12px;width:calc(100% - 24px);border:.5px solid var(--border-soft);border-radius:8px;background:var(--bg-base);font-size:12.5px;color:var(--text-secondary);transition:background .15s,border-color .15s}.new-chat-btn:hover{background:var(--bg-hover);border-color:var(--border-med)}.new-chat-btn svg{stroke:var(--text-muted);flex-shrink:0}.sb-body{flex:1;overflow-y:auto;padding:8px 8px 12px}.sb-label{font-size:10px;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--text-faint);padding:10px 8px 5px}.auth-card{margin:8px 4px 4px;padding:13px 13px 11px;background:var(--bg-auth);border:.5px solid var(--border-soft);border-radius:10px}.auth-card-title{font-size:12.5px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.auth-card-sub{font-size:11.5px;color:var(--text-muted);line-height:1.55;margin-bottom:11px}.auth-btn{display:block;width:100%;padding:7px 12px;border-radius:7px;font-size:12.5px;font-weight:500;text-align:center;transition:opacity .15s,background .15s}.auth-btn.primary{background:var(--bg-mark);color:var(--text-mark);border:none;margin-bottom:6px}.auth-btn.primary:hover{opacity:.85}.auth-btn.secondary{background:none;border:.5px solid var(--border-soft);color:var(--text-secondary)}.auth-btn.secondary:hover{background:var(--bg-hover);border-color:var(--border-med)}.hist-item{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:8px;cursor:pointer;transition:background .15s}.hist-item:hover{background:var(--bg-hover)}.hist-item.active{background:var(--accent-bg);border:.5px solid var(--accent-border)}.hi-icon{flex-shrink:0;color:var(--text-faint)}.hist-item.active .hi-icon{color:var(--accent)}.hi-text{flex:1;font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hist-item.active .hi-text{color:var(--accent-text);font-weight:500}.hi-time{font-size:10px;color:var(--text-faint);flex-shrink:0}.hi-del{background:none;border:none;color:var(--border-med);padding:2px;border-radius:4px;opacity:0;transition:opacity .15s,color .15s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.hist-item:hover .hi-del{opacity:1}.hi-del:hover{color:var(--err-text)}.no-history{font-size:12px;color:var(--text-faint);padding:6px 8px;font-style:italic}.ex-item{display:flex;align-items:flex-start;gap:7px;padding:6px 8px;border-radius:7px;cursor:pointer;transition:background .15s}.ex-item:hover{background:var(--bg-hover)}.ex-arrow{color:var(--text-faint);flex-shrink:0;display:flex;align-items:center}.ex-text{font-size:12px;color:var(--text-muted);line-height:1.45}.sb-divider{height:.5px;background:var(--border-soft);margin:8px 4px}.sb-foot{padding:11px 14px;border-top:.5px solid var(--border-soft);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.status-row{display:flex;align-items:center;gap:5px;font-size:11px;color:var(--text-muted)}.st-dot{width:6px;height:6px;border-radius:50%;background:var(--text-faint);flex-shrink:0;transition:background .4s}.status-row.online .st-dot{background:var(--green);box-shadow:0 0 0 2px var(--green-bg)}.status-row.error .st-dot{background:var(--err-text)}.theme-pill{display:flex;align-items:center;gap:5px;padding:5px 10px;border:.5px solid var(--border-soft);border-radius:20px;font-size:11px;color:var(--text-muted);background:var(--bg-base);transition:border-color .15s,background .15s}.theme-pill:hover{border-color:var(--border-med);background:var(--bg-hover)}.sb-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:40}.chat-panel{flex:1;display:flex;flex-direction:column;height:100%;overflow:hidden;background:var(--bg-base);min-width:0}.chat-header{padding:12px 20px;border-bottom:.5px solid var(--border-soft);display:flex;align-items:center;justify-content:space-between;background:var(--bg-base);flex-shrink:0;gap:12px}.ch-left{display:flex;align-items:center;gap:10px;min-width:0}.ch-right{display:flex;gap:6px;flex-shrink:0}.ch-title{font-size:13.5px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ch-sub{font-size:11px;color:var(--text-faint);margin-top:1px}.icon-btn{width:30px;height:30px;border-radius:7px;border:.5px solid var(--border-soft);background:var(--bg-base);display:flex;align-items:center;justify-content:center;color:var(--text-muted);transition:background .15s,border-color .15s}.icon-btn:hover{background:var(--bg-hover);border-color:var(--border-med)}.msgs{flex:1;overflow-y:auto;padding:28px 28px 16px;display:flex;flex-direction:column}.welcome{margin:auto;max-width:480px;text-align:center;padding:40px 24px}.welcome-mark{width:52px;height:52px;border-radius:14px;background:var(--bg-mark);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600;color:var(--text-mark);margin:0 auto 20px}.welcome h1{font-size:20px;font-weight:600;color:var(--text-primary);margin-bottom:10px}.welcome-rule{width:40px;height:2px;background:var(--accent);margin:0 auto 14px;border-radius:1px}.welcome p{font-size:13.5px;color:var(--text-muted);line-height:1.8}.msg-row{display:flex;gap:11px;max-width:820px;width:100%;margin:0 auto 20px;animation:fadeUp .2s ease both}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.msg-row.user{flex-direction:row-reverse}.av{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;flex-shrink:0;margin-top:3px}.msg-row.user .av{background:var(--bg-surface);border:.5px solid var(--border-soft);color:var(--text-muted)}.msg-row.assistant .av{background:var(--bg-mark);color:var(--text-mark)}.msg-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px}.user-bubble{max-width:72%;margin-left:auto;background:var(--bg-user-msg);border:.5px solid var(--border-soft);border-radius:16px 16px 4px;padding:11px 15px;font-size:13.5px;color:var(--text-primary);line-height:1.65}.refs-header{display:flex;align-items:center;gap:7px;margin-bottom:8px}.src-pill{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;background:var(--accent-bg);border-radius:20px;font-size:11px;color:var(--accent-text);font-weight:500}.src-dot{width:5px;height:5px;border-radius:50%;background:var(--accent)}.ref-cards{display:flex;flex-direction:column;gap:5px}.ref-card{border:.5px solid var(--border-soft);border-left:2.5px solid var(--accent);border-radius:0 8px 8px 0;background:var(--bg-ref);overflow:hidden;transition:border-left-color .15s}.ref-card:hover{border-left-color:var(--accent-text)}.ref-card-head{display:flex;align-items:flex-start;justify-content:space-between;padding:9px 13px;gap:8px;cursor:pointer}.ref-kitap{font-size:11.5px;font-weight:600;color:var(--accent-text)}.ref-loc{font-size:10.5px;color:var(--text-faint);margin-top:2px}.ref-toggle-btn{color:var(--text-faint);border:.5px solid var(--border-soft);border-radius:5px;padding:4px 6px;background:var(--bg-base);transition:color .15s,border-color .15s;flex-shrink:0;display:flex;align-items:center;justify-content:center}.ref-toggle-btn:hover{color:var(--accent);border-color:var(--accent-muted)}.ref-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s ease}.ref-card.open .ref-body{grid-template-rows:1fr}.ref-body-inner{overflow:hidden}.ref-body-content{padding:0 13px 11px;border-top:.5px solid var(--border-soft)}.ref-excerpt{font-size:12.5px;color:var(--text-muted);line-height:1.65;font-style:italic;margin-top:8px}.ref-excerpt:before{content:'"';color:var(--accent)}.ref-excerpt:after{content:'"';color:var(--accent)}.ref-score-row{display:flex;align-items:center;gap:8px;margin-top:8px}.ref-score-track{flex:1;height:2px;background:var(--border-soft);border-radius:1px;overflow:hidden}.ref-score-fill{height:100%;background:var(--accent);border-radius:1px;transition:width .6s ease}.ref-score-pct{font-size:10px;color:var(--text-faint);min-width:26px;text-align:right}.ans-bubble{background:var(--bg-ai-msg);border:.5px solid var(--border-soft);border-radius:4px 16px 16px;padding:13px 16px;font-size:13.5px;color:var(--text-primary);line-height:1.8;white-space:pre-wrap;position:relative}.copy-btn{position:absolute;top:9px;right:10px;display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-faint);border:.5px solid var(--border-soft);border-radius:5px;padding:3px 8px;background:var(--bg-base);opacity:0;transition:opacity .15s,color .15s}.ans-bubble:hover .copy-btn{opacity:1}.copy-btn:hover{color:var(--accent);border-color:var(--accent-muted)}.copy-btn.ok{color:var(--green);opacity:1;border-color:var(--green)}.ans-actions{display:flex;gap:6px}.ans-btn{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-faint);padding:4px 9px;border:.5px solid var(--border-soft);border-radius:6px;background:var(--bg-base);transition:color .15s,border-color .15s,background .15s}.ans-btn:hover{color:var(--text-secondary);border-color:var(--border-med);background:var(--bg-hover)}.msg-time{font-size:10px;color:var(--border-med);padding:0 4px;align-self:flex-end}.thinking-row{display:flex;gap:11px;max-width:820px;width:100%;margin:0 auto 20px}.thinking-bubble{display:flex;align-items:center;gap:10px;padding:11px 15px;background:var(--bg-thinking);border:.5px solid var(--border-soft);border-radius:4px 16px 16px;font-size:13px;color:var(--text-muted)}.dots{display:flex;gap:4px}.dots span{width:5px;height:5px;border-radius:50%;background:var(--accent);animation:pulse 1.4s infinite}.dots span:nth-child(2){animation-delay:.18s}.dots span:nth-child(3){animation-delay:.36s}@keyframes pulse{0%,80%,to{opacity:.2;transform:scale(.75)}40%{opacity:1;transform:scale(1)}}.err-bubble{padding:11px 15px;background:var(--err-bg);border:.5px solid var(--err-border);border-radius:8px;font-size:13px;color:var(--err-text)}.input-area{flex-shrink:0;padding:12px 24px 18px;border-top:.5px solid var(--border-soft);background:var(--bg-base)}.input-wrap{display:flex;align-items:flex-end;gap:10px;border:.5px solid var(--border-med);border-radius:13px;padding:10px 10px 10px 16px;background:var(--bg-input);transition:border-color .2s,box-shadow .2s}.input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}textarea{flex:1;border:none;outline:none;font-size:13.5px;color:var(--text-primary);background:transparent;resize:none;max-height:160px;overflow-y:auto;line-height:1.55;padding:2px 0}textarea::placeholder{color:var(--text-faint)}.send-btn{width:34px;height:34px;border-radius:9px;background:var(--bg-send);border:none;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s,transform .1s}.send-btn:hover:not(:disabled){background:var(--bg-send-hover)}.send-btn:active:not(:disabled){transform:scale(.93)}.send-btn:disabled{background:var(--border-soft)}.send-btn svg{color:var(--text-mark)}.input-hint{text-align:center;font-size:11px;color:var(--text-faint);margin-top:7px}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;height:100%;z-index:50;transform:translate(-100%);transition:transform .25s cubic-bezier(.16,1,.3,1);width:256px!important}.sidebar.mobile-open{transform:translate(0)}.sb-overlay{display:block}.msgs{padding:20px 16px 12px}.input-area{padding:10px 16px 16px}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-surface);padding:24px}.auth-page-card{width:100%;max-width:400px;background:var(--bg-base);border:.5px solid var(--border-soft);border-radius:16px;padding:36px 36px 28px;box-shadow:0 4px 24px #0000000f}.auth-page-brand{display:flex;align-items:center;gap:10px;margin-bottom:28px}.auth-page-mark{width:36px;height:36px;border-radius:9px;background:var(--bg-mark);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:var(--text-mark);flex-shrink:0}.auth-page-product{font-size:14px;font-weight:600;color:var(--text-primary)}.auth-page-sub{font-size:11px;color:var(--text-faint);margin-top:1px}.auth-page-title{font-size:22px;font-weight:600;color:var(--text-primary);margin-bottom:6px}.auth-page-desc{font-size:13.5px;color:var(--text-muted);line-height:1.6;margin-bottom:24px}.auth-page-form{display:flex;flex-direction:column;gap:16px}.auth-page-submit{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:11px;background:var(--bg-mark);color:var(--text-mark);border:none;border-radius:9px;font-size:14px;font-weight:500;margin-top:4px;transition:opacity .15s}.auth-page-submit:hover:not(:disabled){opacity:.88}.auth-page-submit:disabled{opacity:.5;cursor:not-allowed}.auth-page-switch{text-align:center;font-size:13px;color:var(--text-muted);margin-top:20px}.auth-page-switch a{color:var(--accent);text-decoration:none;font-weight:500}.auth-page-switch a:hover{text-decoration:underline}.auth-page-guest{text-align:center;margin-top:10px}.auth-page-guest a{font-size:12px;color:var(--text-faint);text-decoration:none;transition:color .15s}.auth-page-guest a:hover{color:var(--text-muted)}.field-group{display:flex;flex-direction:column;gap:5px}.field-label{font-size:12.5px;font-weight:500;color:var(--text-secondary);display:flex;align-items:center;gap:6px}.field-hint{font-size:11px;color:var(--text-faint);font-weight:400}.field-wrap{display:flex;align-items:center;gap:10px;border:.5px solid var(--border-med);border-radius:8px;padding:0 12px;background:var(--bg-input);transition:border-color .2s,box-shadow .2s}.field-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}.field-icon{color:var(--text-faint);flex-shrink:0}.field-input{flex:1;border:none;outline:none;background:transparent;font-size:13.5px;color:var(--text-primary);padding:10px 0;line-height:1.4}.field-input::placeholder{color:var(--text-faint)}.auth-error{display:flex;align-items:center;gap:7px;padding:10px 12px;background:var(--err-bg);border:.5px solid var(--err-border);border-radius:8px;font-size:12.5px;color:var(--err-text)}.spin{animation:spinning .8s linear infinite}@keyframes spinning{to{transform:rotate(360deg)}}.user-card{margin:8px 4px 4px;padding:11px 12px;background:var(--bg-auth);border:.5px solid var(--border-soft);border-radius:10px}.user-card-row{display:flex;align-items:center;gap:10px}.user-avatar{width:30px;height:30px;border-radius:50%;background:var(--accent-bg);border:.5px solid var(--accent-border);display:flex;align-items:center;justify-content:center;color:var(--accent);flex-shrink:0}.user-info{flex:1;min-width:0}.user-name{font-size:12.5px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-email{font-size:11px;color:var(--text-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-logout{background:none;border:none;color:var(--text-faint);padding:4px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:color .15s,background .15s;flex-shrink:0}.user-logout:hover{color:var(--err-text);background:var(--err-bg)}.migration-card{max-width:380px;text-align:center;padding:40px 36px 32px}.migration-icon{font-size:40px;margin-bottom:16px}.migration-title{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:10px}.migration-desc{font-size:13.5px;color:var(--text-muted);line-height:1.7;margin-bottom:24px}.migration-desc strong{color:var(--text-primary);font-weight:600}.migration-actions{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.migration-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;border-radius:9px;font-size:13.5px;font-weight:500;transition:opacity .15s,background .15s}.migration-btn:disabled{opacity:.5;cursor:not-allowed}.migration-btn.primary{background:var(--bg-mark);color:var(--text-mark);border:none}.migration-btn.primary:hover:not(:disabled){opacity:.88}.migration-btn.secondary{background:none;border:.5px solid var(--border-soft);color:var(--text-muted)}.migration-btn.secondary:hover:not(:disabled){background:var(--bg-hover)}.migration-hint{font-size:11.5px;color:var(--text-faint);line-height:1.6}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:100;padding:24px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal-card{background:var(--bg-base);border:.5px solid var(--border-soft);border-radius:16px;width:100%;box-shadow:0 8px 40px #00000026}