@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";
:root{--bg-primary:#0a0c10;--bg-secondary:#12141c;--bg-tertiary:#1a1d28;--bg-elevated:#1f2233;--bg-hover:#252839;--border-subtle:#ffffff0f;--border-default:#ffffff1a;--border-accent:#d4a0534d;--text-primary:#f0f0f5;--text-secondary:#9a9bb0;--text-muted:#5e6073;--text-accent:#d4a053;--accent-gold:#d4a053;--accent-gold-dim:#d4a05326;--accent-gold-glow:#d4a05340;--accent-blue:#6c9bff;--accent-blue-dim:#6c9bff26;--accent-green:#4ade80;--accent-red:#f87171;--accent-purple:#a78bfa;--openai:#10a37f;--anthropic:#d4a27f;--google:#4285f4;--mistral:#ff7000;--xai:#f55036;--openrouter:#6366f1;--glass-bg:#1a1d28b3;--glass-border:#ffffff14;--glass-backdrop:blur(20px);--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 8px 32px #00000080;--shadow-glow:0 0 20px #d4a0531a;--sidebar-width:280px;--header-height:60px;--template-panel-width:340px;--ease-out:cubic-bezier(.16,1,.3,1);--ease-in-out:cubic-bezier(.65,0,.35,1);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}.app-layout{width:100vw;height:100vh;display:flex;overflow:hidden}.main-area{flex-direction:column;flex:1;min-width:0;height:100vh;display:flex}.header{height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:10;flex-shrink:0;justify-content:space-between;align-items:center;padding:0 24px;display:flex}.header-brand{align-items:center;gap:12px;display:flex}.header-logo{background:linear-gradient(135deg,var(--accent-gold),#e8c177);border-radius:var(--radius-sm);width:32px;height:32px;color:var(--bg-primary);box-shadow:var(--shadow-glow);justify-content:center;align-items:center;font-size:16px;font-weight:700;display:flex}.header-title{color:var(--text-primary);letter-spacing:-.02em;font-size:18px;font-weight:600}.header-subtitle{color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-size:11px;font-weight:500}.header-actions{align-items:center;gap:8px;display:flex}.model-pill{background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:var(--radius-full);color:var(--text-secondary);cursor:pointer;transition:all .2s var(--ease-out);align-items:center;gap:8px;padding:6px 14px;font-size:13px;font-weight:500;display:flex}.model-pill:hover{background:var(--bg-hover);border-color:var(--border-accent);color:var(--text-primary)}.model-pill-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-subtle);height:100vh;transition:width .3s var(--ease-out),min-width .3s var(--ease-out),opacity .3s var(--ease-out);z-index:20;min-width:var(--sidebar-width);flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.sidebar:not(.open){opacity:0;pointer-events:none;border-right:none;width:0;min-width:0}.sidebar-header{border-bottom:1px solid var(--border-subtle);padding:16px}.new-chat-btn{background:linear-gradient(135deg,var(--accent-gold),#c4903d);width:100%;color:var(--bg-primary);border-radius:var(--radius-md);cursor:pointer;transition:all .2s var(--ease-out);box-shadow:var(--shadow-sm),0 0 16px #d4a05326;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-family:Inter,sans-serif;font-size:13px;font-weight:600;display:flex}.new-chat-btn:hover{box-shadow:var(--shadow-md),0 0 24px #d4a05340;transform:translateY(-1px)}.new-chat-btn:active{transform:translateY(0)}.sidebar-search{padding:12px 16px}.sidebar-search input{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);outline:none;padding:8px 12px;font-family:Inter,sans-serif;font-size:13px;transition:border-color .2s}.sidebar-search input::placeholder{color:var(--text-muted)}.sidebar-search input:focus{border-color:var(--accent-gold)}.conversation-list{flex:1;padding:8px;overflow-y:auto}.conversation-group-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;padding:8px 12px 4px;font-size:11px;font-weight:600}.conversation-item{border-radius:var(--radius-sm);cursor:pointer;transition:all .15s var(--ease-out);align-items:center;gap:8px;margin-bottom:2px;padding:10px 12px;display:flex}.conversation-item:hover{background:var(--bg-hover)}.conversation-item.active{background:var(--accent-gold-dim);border:1px solid var(--border-accent)}.conversation-item-icon{color:var(--text-muted);flex-shrink:0;font-size:14px}.conversation-item-title{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:13px;overflow:hidden}.conversation-item.active .conversation-item-title{color:var(--text-primary)}.conversation-item-delete{opacity:0;color:var(--text-muted);cursor:pointer;background:0 0;border:none;flex-shrink:0;padding:2px;font-size:14px;transition:all .15s}.conversation-item:hover .conversation-item-delete{opacity:1}.conversation-item-delete:hover{color:var(--accent-red)}.chat-clear-bar{justify-content:flex-end;width:100%;max-width:850px;margin:0 auto;padding-bottom:4px;display:flex}.chat-clear-btn{border:1px solid var(--border-subtle);border-radius:var(--radius-full);color:var(--text-muted);cursor:pointer;transition:all .2s var(--ease-out);white-space:nowrap;background:0 0;align-items:center;gap:4px;padding:5px 12px;font-family:Inter,sans-serif;font-size:11px;display:flex}.chat-clear-btn:hover{color:var(--accent-red);background:#f8717114;border-color:#f871714d}.chat-clear-btn.confirm{border-color:var(--accent-red);color:var(--accent-red);background:#f8717126;font-weight:600;animation:1s ease-in-out infinite pulse-danger}.chat-clear-btn:disabled{opacity:.4;cursor:not-allowed}@keyframes pulse-danger{0%,to{opacity:1}50%{opacity:.7}}.chat-area{flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.chat-messages{flex-direction:column;flex:1;gap:24px;padding:24px;display:flex;overflow-y:auto}.chat-empty{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:16px;padding:40px;display:flex}.chat-empty-icon{background:linear-gradient(135deg,var(--accent-gold-dim),#6c9bff1a);border-radius:var(--radius-lg);justify-content:center;align-items:center;width:64px;height:64px;font-size:28px;animation:3s ease-in-out infinite float;display:flex}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.chat-empty h2{color:var(--text-primary);letter-spacing:-.02em;font-size:22px;font-weight:600}.chat-empty p{color:var(--text-muted);text-align:center;max-width:400px;font-size:14px;line-height:1.7}.quick-actions{grid-template-columns:1fr 1fr;gap:10px;width:100%;max-width:500px;margin-top:8px;display:grid}.quick-action-btn{background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-backdrop);backdrop-filter:var(--glass-backdrop);border:1px solid var(--glass-border);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;text-align:left;transition:all .2s var(--ease-out);align-items:flex-start;gap:10px;padding:14px 16px;font-family:Inter,sans-serif;font-size:13px;line-height:1.4;display:flex}.quick-action-btn:hover{background:var(--bg-hover);border-color:var(--border-accent);color:var(--text-primary);box-shadow:var(--shadow-glow);transform:translateY(-1px)}.quick-action-icon{flex-shrink:0;margin-top:1px;font-size:18px}.message{width:100%;max-width:850px;animation:message-in .3s var(--ease-out);gap:12px;margin:0 auto;display:flex}@keyframes message-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message.user{flex-direction:row-reverse}.message-avatar{border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;margin-top:2px;font-size:14px;font-weight:600;display:flex}.message.user .message-avatar{background:linear-gradient(135deg,var(--accent-gold),#c4903d);color:var(--bg-primary)}.message.assistant .message-avatar{background:var(--bg-elevated);border:1px solid var(--border-default);color:var(--text-secondary)}.message-content{flex-direction:column;gap:6px;min-width:0;max-width:75%;display:flex}.message-header{align-items:center;gap:8px;display:flex}.message-role{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:600}.message-model-badge{border-radius:var(--radius-full);letter-spacing:.02em;padding:2px 6px;font-size:10px;font-weight:500}.message-body{border-radius:var(--radius-lg);word-break:break-word;padding:14px 18px;font-size:14px;line-height:1.7}.message.user .message-body{border-top-right-radius:var(--radius-sm);color:var(--text-primary);background:linear-gradient(135deg,#d4a05326,#d4a05314);border:1px solid #d4a05333}.message.assistant .message-body{background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-backdrop);backdrop-filter:var(--glass-backdrop);border:1px solid var(--glass-border);border-top-left-radius:var(--radius-sm)}.message-body pre{background:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);margin:10px 0;padding:14px;font-family:JetBrains Mono,monospace;font-size:13px;line-height:1.5;overflow-x:auto}.message-body code{background:#ffffff0f;border-radius:4px;padding:2px 6px;font-family:JetBrains Mono,monospace;font-size:.9em}.message-body pre code{background:0 0;padding:0}.message-body p{margin-bottom:8px}.message-body p:last-child{margin-bottom:0}.message-body ul,.message-body ol{margin:8px 0;padding-left:20px}.message-body li{margin-bottom:4px}.message-body h1,.message-body h2,.message-body h3,.message-body h4,.message-body h5,.message-body h6{letter-spacing:-.01em;margin-top:16px;margin-bottom:8px;font-weight:600}.message-body blockquote{border-left:3px solid var(--accent-gold);color:var(--text-secondary);margin:10px 0;padding-left:14px}.message-body strong{color:var(--text-primary);font-weight:600}.message-actions{opacity:0;gap:4px;transition:opacity .15s;display:flex}.message:hover .message-actions{opacity:1}.message-action-btn{border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;background:0 0;align-items:center;gap:4px;padding:4px 8px;font-family:Inter,sans-serif;font-size:12px;transition:all .15s;display:flex}.message-action-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-default)}.message-action-btn-danger{background:#f871711a;border-color:#f8717166;color:var(--accent-red)!important}.message-action-btn-danger:hover{border-color:var(--accent-red);background:#f8717133}.streaming-cursor{background:var(--accent-gold);vertical-align:text-bottom;border-radius:1px;width:7px;height:18px;margin-left:2px;animation:1s step-start infinite blink;display:inline-block}@keyframes blink{50%{opacity:0}}.chat-input-area{border-top:1px solid var(--border-subtle);background:var(--bg-secondary);padding:16px 24px 24px}.chat-input-wrapper{max-width:850px;margin:0 auto;position:relative}.chat-input-container{background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:var(--radius-lg);align-items:flex-end;gap:10px;padding:10px 14px;transition:border-color .2s;display:flex}.chat-input-container:focus-within{border-color:var(--accent-gold);box-shadow:0 0 0 3px var(--accent-gold-dim)}.chat-input{color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;flex:1;min-height:24px;max-height:200px;font-family:Inter,sans-serif;font-size:14px;line-height:1.6}.chat-input::placeholder{color:var(--text-muted)}.send-btn{border-radius:var(--radius-sm);cursor:pointer;width:36px;height:36px;transition:all .2s var(--ease-out);border:none;flex-shrink:0;justify-content:center;align-items:center;font-size:16px;display:flex}.send-btn.ready{background:linear-gradient(135deg,var(--accent-gold),#c4903d);color:var(--bg-primary);box-shadow:0 0 12px #d4a05333}.send-btn.ready:hover{transform:scale(1.05);box-shadow:0 0 20px #d4a0534d}.send-btn.disabled{background:var(--bg-hover);color:var(--text-muted);cursor:not-allowed}.send-btn.streaming{background:var(--accent-red);color:#fff}.send-btn.streaming:hover{background:#ef4444}.chat-input-hint{text-align:center;color:var(--text-muted);margin-top:8px;font-size:11px}.model-selector-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;animation:fade-in .2s var(--ease-out);background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.model-selector-panel{background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-xl);width:560px;max-height:80vh;box-shadow:var(--shadow-lg);animation:slide-up .3s var(--ease-out);overflow-y:auto}@keyframes slide-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.model-selector-header{border-bottom:1px solid var(--border-subtle);padding:20px 24px 12px}.model-selector-header h2{letter-spacing:-.02em;font-size:18px;font-weight:600}.model-selector-header p{color:var(--text-muted);margin-top:4px;font-size:13px}.model-group{padding:12px 16px}.model-group-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;align-items:center;gap:8px;padding:4px 8px;font-size:12px;font-weight:600;display:flex}.model-group-dot{border-radius:50%;width:6px;height:6px}.model-option{border-radius:var(--radius-md);cursor:pointer;transition:all .15s var(--ease-out);align-items:center;gap:12px;margin:2px 0;padding:12px 16px;display:flex}.model-option:hover:not(.unavailable){background:var(--bg-hover)}.model-option.selected{background:var(--accent-gold-dim);border:1px solid var(--border-accent)}.model-option.unavailable{opacity:.35;cursor:not-allowed}.model-option-icon{border-radius:var(--radius-sm);flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;font-weight:700;display:flex}.model-option-info{flex:1;min-width:0}.model-option-name{color:var(--text-primary);align-items:center;gap:8px;font-size:14px;font-weight:500;display:flex}.model-option-desc{color:var(--text-muted);margin-top:2px;font-size:12px}.model-tag{border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.04em;padding:2px 6px;font-size:10px;font-weight:600}.model-tag.recommended{background:var(--accent-gold-dim);color:var(--accent-gold)}.model-tag.fast{color:var(--accent-green);background:#4ade801a}.model-tag.no-key{color:var(--accent-red);background:#f871711a}.model-option-meta{color:var(--text-muted);align-items:center;gap:8px;margin-top:4px;font-size:11px;display:flex}.template-panel{width:var(--template-panel-width);height:calc(100vh - var(--header-height));background:var(--bg-secondary);border-left:1px solid var(--border-subtle);transition:transform .3s var(--ease-out);flex-direction:column;flex-shrink:0;display:flex}.template-panel.hidden{display:none}.template-panel-header{border-bottom:1px solid var(--border-subtle);padding:16px 20px}.template-panel-header h3{letter-spacing:-.01em;font-size:15px;font-weight:600}.template-tabs{background:var(--bg-tertiary);border-radius:var(--radius-sm);gap:4px;margin-top:12px;padding:3px;display:flex}.template-tab{color:var(--text-muted);cursor:pointer;transition:all .2s var(--ease-out);white-space:nowrap;background:0 0;border:none;border-radius:4px;flex:1;justify-content:center;align-items:center;gap:6px;padding:7px 12px;font-family:Inter,sans-serif;font-size:12px;font-weight:500;display:flex}.template-tab:hover{color:var(--text-secondary)}.template-tab.active{background:var(--bg-elevated);color:var(--text-primary);box-shadow:var(--shadow-sm)}.template-list{flex:1;padding:12px;overflow-y:auto}.template-card{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all .2s var(--ease-out);margin-bottom:8px;padding:12px 14px}.template-card:hover{background:var(--bg-hover);border-color:var(--border-accent);box-shadow:var(--shadow-glow);transform:translateY(-1px)}.template-card-header{align-items:center;gap:8px;display:flex}.template-card-icon{font-size:18px}.template-card-name{color:var(--text-primary);font-size:13px;font-weight:600}.template-card-desc{color:var(--text-muted);margin-top:6px;font-size:12px;line-height:1.5}.toggle-btn{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;justify-content:center;align-items:center;font-size:16px;transition:all .15s;display:flex}.toggle-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-default)}.toggle-btn.active{background:var(--accent-gold-dim);border-color:var(--border-accent);color:var(--accent-gold)}.error-banner{border-radius:var(--radius-md);max-width:850px;color:var(--accent-red);animation:message-in .3s var(--ease-out);background:#f8717114;border:1px solid #f8717133;align-items:center;gap:8px;margin:0 auto 16px;padding:12px 16px;font-size:13px;display:flex}@media (max-width:1100px){.template-panel{display:none}}@media (max-width:768px){.sidebar{z-index:100;position:fixed;top:0;left:0;transform:translate(-100%)}.sidebar.open{box-shadow:var(--shadow-lg);transform:translate(0)}.chat-messages{padding:16px}.chat-input-area{padding:12px 16px 16px}.message-content{max-width:90%}}.sources-panel{border-bottom:1px solid var(--border-subtle);padding:12px}.sources-header{justify-content:space-between;align-items:center;margin-bottom:10px;padding:0 4px;display:flex}.sources-header h3{letter-spacing:-.01em;font-size:14px;font-weight:600}.sources-count{color:var(--text-muted);font-size:11px;font-weight:500}.context-meter{margin-bottom:10px;padding:0 4px}.context-meter-label{color:var(--text-muted);justify-content:space-between;margin-bottom:4px;font-size:11px;display:flex}.context-meter-bar{background:var(--bg-tertiary);border-radius:2px;height:4px;overflow:hidden}.context-meter-fill{height:100%;transition:width .3s var(--ease-out),background .3s;border-radius:2px}.upload-zone{border:2px dashed var(--border-default);border-radius:var(--radius-md);cursor:pointer;transition:all .2s var(--ease-out);flex-direction:column;align-items:center;gap:6px;margin-bottom:10px;padding:16px;display:flex}.upload-zone:hover{border-color:var(--accent-gold);background:var(--accent-gold-dim)}.upload-zone.dragging{border-color:var(--accent-gold);background:var(--accent-gold-dim);transform:scale(1.02);box-shadow:0 0 20px #d4a05326}.upload-zone.uploading{cursor:wait;border-color:var(--accent-blue);background:var(--accent-blue-dim)}.upload-icon{font-size:22px}.upload-text{color:var(--text-secondary);font-size:13px;font-weight:500}.upload-hint{color:var(--text-muted);font-size:11px}.upload-status{color:var(--accent-blue);font-size:12px;font-weight:500}.upload-spinner{border:2px solid var(--accent-blue-dim);border-top-color:var(--accent-blue);border-radius:50%;width:20px;height:20px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.sources-list{flex-direction:column;gap:6px;max-height:200px;display:flex;overflow-y:auto}.source-card{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);transition:all .15s var(--ease-out);flex-direction:column;gap:6px;padding:10px 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.15s}.source-action-btn:hover,.source-preview-btn:hover,.source-delete-btn:hover{opacity:1;border-color:var(--accent-gold)}.source-delete-btn:hover{color:#f44336;background:#f4433614;border-color:#f4433666}.source-toggle{cursor:pointer;width:34px;height:18px;display:inline-block;position:relative}.source-toggle input{opacity:0;width:0;height:0}.source-toggle-slider{background:var(--bg-hover);border-radius:9px;transition:all .2s;position:absolute;inset:0}.source-toggle-slider:before{content:"";background:var(--text-muted);border-radius:50%;width:14px;height:14px;transition:all .2s;position:absolute;bottom:2px;left:2px}.source-toggle input:checked+.source-toggle-slider{background:#4ade804d}.source-toggle input:checked+.source-toggle-slider:before{background:var(--accent-green);transform:translate(16px)}.sources-error{border-radius:var(--radius-sm);color:var(--accent-red);background:#f8717114;border:1px solid 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