:root{--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-glass:#1e293bb3;--bg-glass-hover:#1e293be6;--accent-primary:#3b82f6;--accent-secondary:#8b5cf6;--accent-gradient:linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));--text-primary:#f8fafc;--text-secondary:#cbd5e1;--text-muted:#64748b;--border-color:#ffffff1a;--border-focus:var(--accent-primary);--shadow-sm:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-md:0 10px 15px -3px #0000004d, 0 4px 6px -2px #00000026;--shadow-glow:0 0 20px #3b82f680;--radius-sm:.5rem;--radius-md:1rem;--radius-lg:1.5rem;--radius-full:9999px;--transition-fast:.15s ease;--transition-normal:.3s ease}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);flex-direction:column;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex;position:relative;overflow-x:hidden}body:before,body:after{content:"";filter:blur(100px);z-index:-1;opacity:.4;border-radius:50%;animation:20s ease-in-out infinite alternate float;position:fixed}body:before{background:var(--accent-secondary);width:500px;height:500px;top:-100px;left:-100px}body:after{background:var(--accent-primary);width:600px;height:600px;animation-delay:-10s;bottom:-200px;right:-200px}@keyframes float{0%{transform:translate(0)}to{transform:translate(50px,50px)}}h1{letter-spacing:-.025em;background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:3rem;font-weight:800}h2{color:var(--text-primary);margin-bottom:1rem;font-size:1.8rem;font-weight:600}h3{color:var(--text-secondary);font-size:1.25rem;font-weight:600}p{color:var(--text-secondary);line-height:1.6}.app-container{grid-template-columns:1fr;gap:2rem;max-width:1200px;margin:0 auto;padding:2rem;display:grid}@media (width>=1024px){.app-container{grid-template-columns:350px 1fr}}header{text-align:center;grid-column:1/-1;padding:3rem 0 2rem}header p{max-width:600px;margin:0 auto;font-size:1.2rem}.glass-panel{background:var(--bg-glass);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-md);transition:all var(--transition-normal);padding:2rem}.btn{border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);border:none;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-family:inherit;font-size:1rem;font-weight:600;display:inline-flex}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 15px #3b82f666}.btn-primary:hover{box-shadow:var(--shadow-glow);transform:translateY(-2px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;box-shadow:none;transform:none}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-color);background:0 0}.btn-secondary:hover{border-color:var(--text-secondary);background:#ffffff0d}.upload-zone{border:2px dashed var(--border-color);border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all var(--transition-normal);background:#0f172a66;flex-direction:column;justify-content:center;align-items:center;gap:1rem;min-height:300px;padding:3rem 2rem;display:flex}.upload-zone:hover,.upload-zone.drag-active{border-color:var(--accent-primary);background:#3b82f60d;transform:scale(1.02)}.upload-zone svg{color:var(--accent-primary);width:64px;height:64px;transition:transform var(--transition-normal);margin-bottom:1rem}.upload-zone:hover svg{transform:translateY(-5px)}.document-list{flex-direction:column;gap:1rem;margin-top:1.5rem;display:flex}.document-item{border:1px solid var(--border-color);border-radius:var(--radius-sm);transition:all var(--transition-fast);cursor:pointer;background:#ffffff08;justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}.document-item:hover{background:#ffffff14;border-color:#fff3;transform:translate(5px)}.document-item.selected{border-color:var(--accent-primary);box-shadow:inset 0 0 0 1px var(--accent-primary);background:#3b82f61a}.doc-info{align-items:center;gap:1rem;display:flex}.doc-icon{color:var(--accent-primary)}.doc-actions{gap:.5rem;display:flex}.action-btn{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-full);transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;padding:.5rem;display:flex}.action-btn:hover{color:var(--text-primary);background:#ffffff1a}.spinner{animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.notification{background:var(--bg-secondary);border-left:4px solid var(--accent-primary);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);opacity:0;z-index:50;align-items:center;gap:.75rem;padding:1rem 1.5rem;animation:.3s forwards slideIn;display:flex;position:fixed;bottom:2rem;right:2rem;transform:translateY(100px)}.notification.error{border-left-color:#ef4444}@keyframes slideIn{to{opacity:1;transform:translateY(0)}}.editor-layout{border-radius:var(--radius-md);border:1px solid var(--border-color);background:#000;flex-direction:column;flex:1;height:calc(100vh - 200px);min-height:65vh;display:flex;overflow:hidden}.editor-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:.75rem 1.5rem;display:flex}.editor-main{flex:1;height:100%;display:flex;position:relative;overflow:hidden}.editor-pane{transition:padding-right var(--transition-normal);flex:1;height:100%;position:relative}.chat-pane{-webkit-backdrop-filter:blur(16px);width:350px;height:100%;transition:transform var(--transition-normal) cubic-bezier(.4, 0, .2, 1);z-index:10;background:#0f172abf;border-left:1px solid #ffffff1a;flex-direction:column;display:flex;position:absolute;top:0;right:0;box-shadow:-5px 0 25px #00000080}.chat-pane.open{transform:translate(0)}.chat-pane.closed{transform:translate(100%)}.chat-toggle-floating{background:var(--bg-glass);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--border-color);color:var(--accent-primary);border-radius:var(--radius-full);cursor:pointer;z-index:5;width:48px;height:48px;box-shadow:var(--shadow-md);transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex;position:absolute;top:1rem;right:1rem}.chat-toggle-floating:hover{border-color:var(--accent-primary);box-shadow:var(--shadow-glow);background:#3b82f61a;transform:scale(1.05)}.chat-header{border-bottom:1px solid var(--border-color);color:var(--accent-primary);background:#ffffff05;align-items:center;gap:.5rem;padding:1rem;font-weight:600;display:flex}.chat-messages{flex-direction:column;flex:1;gap:1rem;padding:1rem;display:flex;overflow-y:auto}.chat-message{border-radius:var(--radius-md);padding:1rem;font-size:.95rem;line-height:1.5;animation:.3s forwards slideIn}.chat-message.assistant{border:1px solid #3b82f633;border-left:3px solid var(--accent-primary);box-shadow:var(--shadow-sm);background:linear-gradient(145deg,#1e293bcc,#0f172ae6);border-bottom-left-radius:0}.chat-message.user{border:1px solid #ffffff0d;border-right:3px solid var(--accent-secondary);max-width:90%;box-shadow:var(--shadow-sm);background:linear-gradient(135deg,#3b82f626,#8b5cf626);border-bottom-right-radius:0;align-self:flex-end}.typing-indicator{align-items:center;gap:4px;padding:4px 8px;display:flex}.typing-indicator span{background-color:var(--accent-primary);border-radius:50%;width:8px;height:8px;animation:1.4s ease-in-out infinite both typing;display:inline-block}.typing-indicator span:first-child{animation-delay:-.32s}.typing-indicator span:nth-child(2){animation-delay:-.16s}@keyframes typing{0%,80%,to{opacity:.5;transform:scale(0)}40%{opacity:1;transform:scale(1)}}.chat-context-preview{color:var(--text-muted);border-bottom:1px solid #ffffff0d;margin-bottom:.5rem;padding-bottom:.5rem;font-size:.8rem;font-style:italic}.chat-input-area{border-top:1px solid var(--border-color);background:#0003;padding:1rem;display:flex}.chat-input-area input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;padding:.75rem;font-family:inherit}.chat-input-area input::placeholder{color:var(--text-muted)}.chat-input-area button{background:var(--accent-primary);color:#fff;border-radius:var(--radius-full);cursor:pointer;width:40px;height:40px;transition:all var(--transition-fast);border:none;justify-content:center;align-items:center;display:flex}.chat-input-area button:hover:not(:disabled){box-shadow:var(--shadow-glow);transform:scale(1.05)}.chat-input-area button:disabled{opacity:.5;cursor:not-allowed}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#ffffff0d;border-radius:4px}::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.editor-layout.full-screen{z-index:9999;border:none;border-radius:0;width:100vw;max-width:100%;height:100vh;margin:0;position:fixed;top:0;left:0}@media (width<=768px){.hide-mobile{display:none}}.markdown-preview{color:var(--text-primary);font-size:1rem;line-height:1.6}.markdown-preview h1,.markdown-preview h2,.markdown-preview h3,.markdown-preview h4,.markdown-preview h5,.markdown-preview h6{color:var(--text-primary);margin-top:1.5rem;margin-bottom:.75rem;font-weight:600;line-height:1.25}.markdown-preview h1{border-bottom:1px solid var(--border-color);padding-bottom:.3em;font-size:2em}.markdown-preview h2{border-bottom:1px solid var(--border-color);padding-bottom:.3em;font-size:1.5em}.markdown-preview h3{font-size:1.25em}.markdown-preview p,.markdown-preview blockquote,.markdown-preview ul,.markdown-preview ol,.markdown-preview dl,.markdown-preview table,.markdown-preview pre{margin-top:0;margin-bottom:1rem}.markdown-preview blockquote{color:var(--text-muted);border-left:.25em solid var(--border-color);margin:0;padding:0 1em}.markdown-preview ul,.markdown-preview ol{padding-left:2em}.markdown-preview code{background-color:#ffffff1a;border-radius:6px;margin:0;padding:.2em .4em;font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,Liberation Mono,monospace;font-size:85%}.markdown-preview pre{background-color:var(--bg-primary);border:1px solid var(--border-color);border-radius:6px;padding:16px;font-size:85%;line-height:1.45;overflow:auto}.markdown-preview pre code{background-color:#0000;padding:0}.markdown-preview table{border-spacing:0;border-collapse:collapse;width:100%}.markdown-preview table th,.markdown-preview table td{border:1px solid var(--border-color);padding:6px 13px}.markdown-preview table tr:nth-child(2n){background-color:#ffffff05}