:root{--bg: #070b14;--panel: rgba(14, 20, 36, .92);--panel-border: rgba(92, 184, 255, .16);--text: #e8eef8;--muted: #8b97b3;--accent: #4ce0c8;--accent-2: #4aa8ff;--danger: #ff6b7a;--ok: #5fe0a0;--warn: #f5c16c;--shadow: 0 24px 80px rgba(0, 0, 0, .35)}*{box-sizing:border-box}*{scrollbar-width:thin;scrollbar-color:rgba(92,184,255,.35) transparent}*::-webkit-scrollbar{width:8px;height:8px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#4ce0c873,#4aa8ff73);border-radius:8px;border:2px solid transparent;background-clip:padding-box}*::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#4ce0c8b3,#4aa8ffb3);background-clip:padding-box}*::-webkit-scrollbar-corner{background:transparent}html,body,#app{margin:0;height:100%;overflow:hidden}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:radial-gradient(1200px 500px at 10% -10%,rgba(76,224,200,.12),transparent 50%),radial-gradient(900px 400px at 100% 0%,rgba(74,168,255,.14),transparent 46%),linear-gradient(180deg,#0a1222 0%,var(--bg) 40%)}button,input,textarea{font:inherit}input:focus,textarea:focus,select:focus{outline:none;box-shadow:0 0 0 1px var(--accent-2)}.app-shell{display:grid;grid-template-columns:380px minmax(0,1fr);height:100vh;overflow:hidden}.kb-panel{height:100vh;border-right:1px solid var(--panel-border);background:var(--panel);padding:28px 22px 32px;display:flex;flex-direction:column;gap:20px;overflow:hidden}.kb-panel .panel-head,.kb-panel .upload-box,.kb-panel .params{flex-shrink:0}.chat-panel{height:100vh;min-height:0;display:flex;flex-direction:column;padding:28px 32px 20px;overflow:hidden}.eyebrow{margin:0 0 6px;color:var(--accent);letter-spacing:.16em;font-size:11px;text-transform:uppercase}.panel-head h1,.chat-head h1{margin:0;font-size:28px;font-weight:650}.panel-head p,.chat-head p{margin:0;font-size:16px;font-weight:650}.sub,.muted,.hint,.param-note{color:var(--muted)}.sub{margin:8px 0 0;line-height:1.5}.upload-box,.params{border:1px solid var(--panel-border);border-radius:16px;background:#ffffff05;box-shadow:var(--shadow)}.upload-box,.params{padding:16px}.hidden-input{display:none}.primary-btn{width:100%;border:0;border-radius:12px;padding:12px 16px;color:#04110e;background:linear-gradient(135deg,var(--accent),#7ee7ff);font-weight:700;cursor:pointer}.primary-btn:disabled{cursor:not-allowed;opacity:.55}.hint{margin:10px 0 0;font-size:12px;text-align:center}.params h2,.file-list h2{margin:0;font-size:14px;letter-spacing:.04em}.params label{display:grid;grid-template-columns:1fr auto;grid-template-areas:"label input" "note input";align-items:center;gap:4px 12px;margin-top:8px}.params label>span{grid-area:label}.params label .param-note{grid-area:note}.params label input{grid-area:input}.params input{width:108px;border:1px solid var(--panel-border);border-radius:10px;background:#070b14b3;color:var(--text);padding:8px 10px}.param-note{margin:0;font-size:12px;line-height:1.45}.file-list{flex:1;min-height:0;display:flex;flex-direction:column;gap:10px}.list-head{display:flex;justify-content:space-between;align-items:baseline;color:var(--muted);font-size:12px;flex-shrink:0}.file-list .notice,.file-list .error,.file-list .empty{flex-shrink:0}.file-list ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;flex:1;min-height:0;overflow:auto}.file-item{border:1px solid var(--panel-border);border-radius:14px;padding:12px 12px 8px;background:#ffffff04;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"title title" "meta delete" "error error";gap:6px 10px;align-items:end;flex-shrink:0}.file-item strong{grid-area:title;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-item .meta{grid-area:meta;min-width:0}.file-item .ghost-btn{grid-area:delete;align-self:end}.file-item .item-error{grid-area:error}.meta{display:flex;gap:8px;align-items:center;flex-wrap:nowrap;color:var(--muted);font-size:12px;overflow:hidden}.status{font-size:12px;font-weight:600;padding:0;border:0;background:none;white-space:nowrap}.status.waiting{color:var(--muted)}.status.processing{color:var(--accent-2)}.status.completed{color:var(--ok)}.status.failed{color:var(--danger)}.ghost-btn{border:1px solid var(--panel-border);background:transparent;color:var(--muted);border-radius:6px;padding:2px 6px;font-size:11px;line-height:1.3;cursor:pointer}.ghost-btn:hover{color:var(--danger);border-color:#ff6b7a80}.notice,.error,.empty,.item-error{font-size:13px;line-height:1.5}.notice{color:var(--accent)}.error,.item-error{color:var(--danger);margin:0;grid-column:1 / -1;word-break:break-all}.empty{color:var(--muted)}.chat-head{margin-bottom:18px;flex-shrink:0}.toast{position:fixed;top:20px;right:20px;z-index:1000;width:320px;max-width:calc(100vw - 40px);padding:10px 14px;border-radius:8px;font-size:13px;line-height:1.5;word-break:break-word;box-shadow:0 10px 28px #0006;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.toast.info{color:var(--accent-2);background:#0e1c30f0;border:1px solid rgba(74,168,255,.45)}.toast.success{color:var(--ok);background:#0a2018f0;border:1px solid rgba(95,224,160,.45)}.toast.error{color:var(--danger);background:#280e14f0;border:1px solid rgba(255,107,122,.5)}.toast-enter-active{animation:toast-slide-in .32s ease-out}.toast-leave-active{animation:toast-slide-out .22s ease-in}@keyframes toast-slide-in{0%{transform:translate(120%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes toast-slide-out{0%{transform:translate(0);opacity:1}to{transform:translate(120%);opacity:0}}.transcript{flex:1;min-height:0;overflow-y:auto;padding-right:6px}.placeholder-card{display:flex;align-items:center;justify-content:center;height:100%;text-align:center}.placeholder-tip{color:var(--muted);font-size:18px;line-height:1.6}.composer{margin-top:18px;flex-shrink:0}.composer-input{position:relative}.composer textarea{width:100%;resize:none;border-radius:14px;border:1px solid var(--panel-border);background:#0e1424e6;color:var(--text);padding:12px 56px 12px 14px;box-sizing:border-box}.composer textarea:disabled{opacity:.7}.composer .send-btn{position:absolute;right:11px;bottom:13px;width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:10px;color:#04110e;background:linear-gradient(135deg,var(--accent),#7ee7ff);cursor:pointer;transition:transform .15s ease,opacity .15s ease,box-shadow .15s ease;box-shadow:0 4px 12px #00000040}.composer .send-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px #00000052}.composer .send-btn:active:not(:disabled){transform:translateY(0)}.composer .send-btn:disabled{cursor:not-allowed;opacity:.45;box-shadow:none}.composer .send-btn svg{display:block;transform:translate(1px)}.retrieval{display:flex;flex-direction:column;gap:12px}.query-card,.result-card{border:1px solid var(--panel-border);border-radius:16px;background:#ffffff05;padding:16px 18px}.query-card h2,.result-head h2{margin:0;font-size:18px;font-weight:650}.debug-line{margin:8px 0 0;color:var(--muted);font-size:13px}.result-card header{display:flex;justify-content:space-between;gap:12px;align-items:baseline}.result-card header span{color:var(--accent);font-size:13px;white-space:nowrap}.answer-card .eyebrow{margin-bottom:10px}.answer-body{line-height:1.75;word-break:break-word}.answer-body h1,.answer-body h2,.answer-body h3{margin:.8em 0 .4em;font-weight:650}.answer-body h1{font-size:22px}.answer-body h2{font-size:18px}.answer-body h3{font-size:16px}.answer-body p,.answer-body ul{margin:.4em 0}.answer-body ul{padding-left:1.25em}.answer-body code{font-family:Consolas,Courier New,monospace;font-size:.92em;background:#4aa8ff1f;padding:.1em .35em;border-radius:4px}.answer-body pre{margin:10px 0;padding:12px 14px;overflow-x:auto;border-radius:10px;background:#070b14b3;border:1px solid var(--panel-border)}.answer-body pre code{background:none;padding:0}.sources{margin-top:4px}.sources h2{margin:0 0 10px;font-size:18px;font-weight:650}.sources ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.sources li{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:baseline;padding:10px 14px;border:1px solid var(--panel-border);border-radius:12px;background:#ffffff05;font-size:13px;color:var(--muted)}.sources li strong{color:var(--text)}@media(max-width:900px){html,body,#app{height:auto;overflow:auto}.app-shell{grid-template-columns:1fr;height:auto;overflow:visible}.kb-panel,.chat-panel{height:auto;overflow:visible}.file-list,.file-list ul{flex:none;overflow:visible}}
