@import url("https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=DM+Sans:wght@300;400;500;600&display=swap");:root{--bg:#f5f6fa;--bg2:#fff;--bg3:#eef0f6;--border:#dde1ec;--accent:#06f;--accent2:#6c47ff;--warn:#f04e37;--text:#1a1d2e;--text2:#5a5f7a;--text3:#9499b5;--radius:8px;--font-mono:"Space Mono",monospace;--font-body:"DM Sans",sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:14px;line-height:1.6;height:100vh;overflow:hidden}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:var(--bg3)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text3)}.layout{display:flex;height:100vh;height:100dvh;position:relative}.sidebar{width:220px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.mobile-topbar,.sidebar-overlay{display:none}@media (max-width:768px){body{overflow:auto}.mobile-topbar{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--bg2);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:60}.mobile-topbar .hamburger{background:none;border:none;cursor:pointer;font-size:22px;line-height:1;color:var(--text);padding:4px 8px;border-radius:6px}.mobile-topbar .hamburger:hover{background:var(--bg3)}.mobile-topbar .mt-title{font-family:var(--font-mono);font-size:14px;color:var(--accent);font-weight:700}.sidebar{position:fixed;top:0;left:0;bottom:0;height:100dvh;width:264px;max-width:82vw;transform:translateX(-100%);transition:transform .25s ease;z-index:200;box-shadow:2px 0 18px rgba(0,0,0,.18)}.sidebar.open{transform:translateX(0)}.sidebar-overlay{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:150}.main{width:100%;min-width:0;overflow-y:auto;-webkit-overflow-scrolling:touch}.page-header{padding:12px 16px;flex-wrap:wrap;row-gap:8px}}@media (max-width:640px){.rgrid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))!important}}@media (max-width:380px){.rgrid{grid-template-columns:1fr!important}}.sidebar-logo{padding:20px 16px 16px;border-bottom:1px solid var(--border)}.sidebar-logo h1{font-family:var(--font-mono);font-size:15px;color:var(--accent);letter-spacing:-.5px}.sidebar-logo p{font-size:10px;color:var(--text3);margin-top:2px;letter-spacing:1px;text-transform:uppercase}.sidebar-nav{padding:12px 8px;flex:1 1}.nav-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius);cursor:pointer;color:var(--text2);font-size:13px;font-weight:500;transition:all .15s;border:none;background:none;width:100%;text-align:left}.nav-item:hover{background:var(--bg3);color:var(--text)}.nav-item.active{background:rgba(0,212,170,.1);color:var(--accent)}.nav-item .icon{font-size:16px;width:20px;text-align:center}.sidebar-key{padding:12px;border-top:1px solid var(--border)}.key-input{width:100%;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:7px 10px;color:var(--text2);font-family:var(--font-mono);font-size:10px;outline:none}.key-input:focus{border-color:var(--accent);color:var(--text)}.main{flex:1 1;display:flex;flex-direction:column;overflow:hidden}.page-header{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;background:var(--bg2)}.page-header h2{font-size:15px;font-weight:600}.page-header .badge{font-size:10px;padding:2px 8px;border-radius:20px;background:rgba(0,212,170,.1);color:var(--accent);font-family:var(--font-mono)}.chat-area{flex:1 1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:16px}.message{display:flex;gap:10px;max-width:820px}.message.user{flex-direction:row-reverse;align-self:flex-end}.msg-avatar{width:28px;height:28px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0}.message.user .msg-avatar{background:var(--accent2)}.message.assistant .msg-avatar{background:rgba(0,212,170,.15);border:1px solid rgba(0,212,170,.3)}.msg-bubble{padding:10px 14px;border-radius:10px;font-size:13.5px;line-height:1.65;max-width:680px}.message.user .msg-bubble{background:var(--accent);color:#fff;border-radius:10px 2px 10px 10px}.message.assistant .msg-bubble{background:var(--bg2);border:1px solid var(--border);border-radius:2px 10px 10px 10px;box-shadow:0 1px 3px rgba(0,0,0,.06)}.msg-bubble h3{font-size:13px;margin:10px 0 4px;color:var(--accent)}.msg-bubble p{margin-bottom:6px}.msg-bubble ol,.msg-bubble ul{padding-left:18px;margin-bottom:6px}.msg-bubble code{background:var(--bg2);padding:1px 5px;border-radius:3px;font-family:var(--font-mono);font-size:11px}.msg-sources{margin-top:8px;padding-top:8px;border-top:1px solid var(--border);font-size:11px;color:var(--text3)}.msg-sources>span{display:inline-block;background:var(--bg2);border:1px solid var(--border);border-radius:4px;padding:2px 7px;margin:2px 3px 2px 0;color:var(--text2)}.msg-sources summary{list-style:none;color:var(--text3)}.msg-sources summary:hover{color:var(--text2)}.msg-sources summary::-webkit-details-marker{display:none}.msg-sources summary:before{content:"▸ ";display:inline-block;transition:transform .15s}.msg-sources[open] summary:before{content:"▾ "}.progress-bar{height:2px;background:var(--border);border-radius:1px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:1px;transition:width .4s ease}.progress-label{font-size:11px;color:var(--text3);font-family:var(--font-mono);margin-top:4px}.chat-input-area{padding:16px 24px;border-top:1px solid var(--border);background:var(--bg2)}.chat-input-row{display:flex;gap:8px;align-items:flex-end}.chat-input{flex:1 1;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;color:var(--text);font-family:var(--font-body);font-size:13.5px;outline:none;resize:none;min-height:42px;max-height:120px;line-height:1.5}.chat-input:focus{border-color:var(--accent)}.chat-input::placeholder{color:var(--text3)}.send-btn{background:var(--accent);color:#fff;border:none;border-radius:var(--radius);width:42px;height:42px;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .15s;flex-shrink:0;box-shadow:0 2px 8px rgba(0,102,255,.3)}.send-btn:hover{background:#0052cc;transform:scale(1.05)}.send-btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}.typing{display:flex;gap:4px;padding:12px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:2px 10px 10px 10px;width:-moz-fit-content;width:fit-content}.typing span{width:6px;height:6px;background:var(--text3);border-radius:50%;animation:bounce 1.2s infinite}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px);background:var(--accent)}}.docs-panel{flex:1 1;overflow-y:auto;padding:20px 24px}.upload-zone{border:2px dashed var(--border);border-radius:12px;padding:40px 24px;text-align:center;cursor:pointer;transition:all .2s;margin-bottom:20px}.upload-zone.drag,.upload-zone:hover{border-color:var(--accent);background:rgba(0,212,170,.03)}.upload-zone h3{font-size:15px;margin-bottom:6px}.upload-zone p{font-size:12px;color:var(--text3)}.doc-type-select{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:6px 10px;color:var(--text);font-size:12px;margin-top:10px;outline:none}.doc-list{display:flex;flex-direction:column;gap:8px}.doc-item{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;display:flex;align-items:center;gap:10px}.doc-item .doc-icon{font-size:18px}.doc-item .doc-info{flex:1 1}.doc-item .doc-name{font-size:13px;font-weight:500}.doc-item .doc-meta{font-size:11px;color:var(--text3);margin-top:1px}.doc-del{background:none;border:1px solid var(--border);color:var(--text3);border-radius:4px;width:26px;height:26px;cursor:pointer;font-size:12px;display:flex;align-items:center;justify-content:center}.doc-del:hover{border-color:var(--warn);color:var(--warn)}.btn{padding:8px 16px;border-radius:var(--radius);font-size:13px;font-weight:500;cursor:pointer;border:none;transition:all .15s}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 8px rgba(0,102,255,.25)}.btn-primary:hover{background:#0052cc}.btn-ghost{background:var(--bg3);color:var(--text2);border:1px solid var(--border)}.btn-ghost:hover{color:var(--text);border-color:var(--text3)}.upload-progress{padding:12px 14px;margin-bottom:12px}.toast,.upload-progress{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius)}.toast{position:fixed;bottom:20px;right:20px;padding:12px 16px;font-size:13px;z-index:999;animation:slideIn .2s ease}.toast.success{border-color:var(--accent);color:var(--accent)}.toast.error{border-color:var(--warn);color:var(--warn)}@keyframes slideIn{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(1.12)}}@keyframes voiceRing{0%{transform:scale(.55);opacity:.7}to{transform:scale(1.35);opacity:0}}.empty-state{text-align:center;padding:60px 20px;color:var(--text3)}.empty-state .empty-icon{font-size:40px;margin-bottom:12px}.empty-state p{font-size:13px}.msg-actions{display:flex;gap:4px;margin-top:6px;opacity:0;transition:opacity .15s ease}.message:hover .msg-actions{opacity:1}.msg-actions .msg-act{background:transparent;border:none;border-radius:6px;padding:3px 7px;font-size:12px;cursor:pointer;color:var(--text3)}.msg-actions .msg-act:hover{background:var(--bg3);color:var(--text)}@media (hover:none){.msg-actions{opacity:1}}.starter-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:540px;margin:0 auto}.starter-chip{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:10px 14px;font-size:13px;color:var(--text2);cursor:pointer;text-align:left;transition:border-color .15s,color .15s}.starter-chip:hover{border-color:var(--accent);color:var(--text)}.chat-shell{min-height:0;position:relative}.chat-col,.chat-shell{flex:1 1;display:flex;overflow:hidden}.chat-col{flex-direction:column;min-width:0}.chat-convo{width:260px;flex-shrink:0;border-right:1px solid var(--border);background:var(--bg2);display:flex;flex-direction:column;overflow:hidden}.chat-convo.collapsed{display:none}.chat-convo-head{padding:10px;border-bottom:1px solid var(--border)}.chat-convo-new{width:100%;display:flex;align-items:center;gap:8px;justify-content:center;padding:10px;border-radius:10px;cursor:pointer;background:var(--accent);color:#0a0f1e;border:none;font-weight:600;font-size:13px}.chat-convo-new:hover{filter:brightness(1.05)}.chat-convo-list{flex:1 1;overflow-y:auto}.chat-convo-empty{padding:16px;font-size:12px;color:var(--text3);text-align:center}.chat-convo-item{padding:10px 12px;cursor:pointer;border-bottom:1px solid var(--border);transition:background .12s}.chat-convo-item:hover{background:var(--bg3)}.chat-convo-item.active{background:var(--bg3);border-left:3px solid var(--accent)}.chat-convo-item .cc-title{font-size:13px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-convo-item .cc-meta{font-size:10px;color:var(--text3);font-family:var(--font-mono);margin-top:2px}@media (max-width:768px){.chat-convo{position:absolute;left:0;top:0;z-index:40;height:100%;width:80%;max-width:300px;box-shadow:6px 0 24px rgba(0,0,0,.3)}}