:root{--bg: #f8f9fb;--surface: #ffffff;--surface-2: #f1f3f6;--border: #dde2e8;--text: #1a2332;--muted: #5c6b7e;--accent: #2563eb;--accent-dim: #1d4ed8;--success: #15803d;--warn: #b45309;--error: #dc2626;--heart: #be185d;--spark: #b45309;--pulse: #15803d;--mono: "Google Sans", system-ui, sans-serif;--sans: "Google Sans", system-ui, sans-serif}*{box-sizing:border-box}body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}button,input,textarea,select{font-family:inherit;font-size:inherit}button{cursor:pointer;border:1px solid var(--border);background:var(--surface-2);color:var(--text);padding:.45rem .85rem;border-radius:6px;transition:background .15s,border-color .15s}button:hover:not(:disabled){background:var(--surface-2);border-color:var(--accent)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent-dim);color:#fff}button.primary:hover:not(:disabled){background:var(--accent-dim)}button.danger{border-color:#fecaca;color:var(--error);background:#fef2f2}input,textarea,select{background:#fff;border:1px solid var(--border);color:var(--text);border-radius:6px;padding:.45rem .65rem;width:100%}textarea{resize:vertical;min-height:72px;font-family:var(--mono);font-size:13px}label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:.35rem}.field{margin-bottom:.75rem}.app{min-height:100vh;display:flex;flex-direction:column}.header{padding:.85rem 1.25rem;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:1rem;flex-wrap:wrap;background:var(--surface)}.header h1{margin:0;font-size:1rem;font-weight:600}.header .badge{font-size:11px;padding:.15rem .5rem;border-radius:4px;background:var(--surface-2);color:var(--muted);border:1px solid var(--border)}.header .badge.ok{color:var(--success);border-color:#bbf7d0;background:#f0fdf4}.header .badge.err{color:var(--error);border-color:#fecaca;background:#fef2f2}.api-url-row{display:flex;gap:.5rem;flex:1;min-width:280px;max-width:520px}.layout{flex:1;display:grid;min-height:0;overflow:hidden}.layout-session{grid-template-columns:1fr 400px}.layout-session-main{display:flex;flex-direction:column;min-height:0;overflow:hidden;border-right:1px solid var(--border)}.layout-rag{grid-template-columns:1fr 380px}.layout-rag-side{display:flex;flex-direction:column;min-height:0;overflow:hidden;border-left:1px solid var(--border)}.layout-rag-side .panel{flex:1;min-height:0;border-right:none}.nav-tabs{display:flex;gap:.25rem;background:var(--surface-2);padding:.2rem;border-radius:8px;border:1px solid var(--border)}.nav-tabs button{border:none;background:transparent;padding:.4rem .85rem;font-size:13px;font-weight:500;color:var(--muted)}.nav-tabs button:hover:not(.active){color:var(--text);background:#0000000a}.nav-tabs button.active{background:#fff;color:var(--accent);box-shadow:0 1px 2px #0000000f}.rag-page{overflow-y:auto;padding:1.25rem 1.5rem;background:var(--bg)}.rag-page-intro{margin-bottom:1.25rem}.rag-page-intro h2{margin:0 0 .35rem;font-size:1.15rem}.rag-page-intro p{margin:0;color:var(--muted);font-size:13px}.rag-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;max-width:1100px}.rag-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:1rem;margin-bottom:0;border-bottom:none}.rag-card-wide{grid-column:1 / -1}.hint{font-size:11px;margin-top:8px;color:var(--muted)}.doc-id{color:var(--muted)}select{cursor:pointer}select option{font-family:var(--sans);font-size:13px}@media(max-width:1000px){.layout-session,.layout-rag,.rag-grid{grid-template-columns:1fr}.layout-rag-side{border-left:none;border-top:1px solid var(--border);max-height:50vh}}.panel{border-right:1px solid var(--border);overflow-y:auto;display:flex;flex-direction:column}.panel:last-child{border-right:none}.panel-header{padding:.65rem 1rem;border-bottom:1px solid var(--border);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);background:var(--surface);position:sticky;top:0;z-index:1}.panel-body{padding:1rem;flex:1}.section{margin-bottom:1.25rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border)}.section:last-child{border-bottom:none;margin-bottom:0}.section h3{margin:0 0 .75rem;font-size:13px;font-weight:600}.row{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.5rem}.session-id{font-family:var(--mono);font-size:11px;word-break:break-all;color:var(--accent);margin:.5rem 0}.stage-pills{display:flex;gap:.35rem;margin:.5rem 0}.pill{font-size:11px;padding:.2rem .5rem;border-radius:4px;border:1px solid var(--border)}.pill.heart{border-color:var(--heart);color:var(--heart)}.pill.spark{border-color:var(--spark);color:var(--spark)}.pill.pulse{border-color:var(--pulse);color:var(--pulse)}.pill.active{background:#eff6ff}.cost-banner{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem .75rem;margin-top:.75rem;padding:.5rem .65rem;border-radius:6px;border:1px solid var(--border);background:var(--surface-2);font-size:12px}.cost-label{color:var(--muted);font-weight:500}.cost-value{font-family:var(--mono);font-weight:600;color:var(--text)}.cost-badge{font-size:10px;padding:.15rem .4rem;border-radius:4px;text-transform:uppercase;letter-spacing:.03em}.cost-badge.exact{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}.cost-badge.estimate{background:#fffbeb;color:#b45309;border:1px solid #fde68a}.cost-meta{color:var(--muted);font-size:11px}.json-block{font-family:var(--mono);font-size:11px;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:.65rem;overflow:auto;max-height:320px;white-space:pre-wrap;word-break:break-word}.json-block.sm{max-height:160px}.log-list{display:flex;flex-direction:column;gap:.5rem}.log-item{border:1px solid var(--border);border-radius:6px;overflow:hidden;background:var(--surface)}.log-item summary{padding:.5rem .75rem;cursor:pointer;font-family:var(--mono);font-size:11px;display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;list-style:none}.log-item summary::-webkit-details-marker{display:none}.log-item summary:before{content:"▸";color:var(--muted)}.log-item[open] summary:before{content:"▾"}.log-method{font-weight:600;color:var(--accent)}.log-status.ok{color:var(--success)}.log-status.err{color:var(--error)}.log-body{padding:0 .75rem .75rem;display:grid;gap:.5rem}.log-label{font-size:10px;text-transform:uppercase;color:var(--muted);margin-bottom:.2rem}.metrics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.5rem;margin-bottom:.75rem}.metric{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:.5rem .65rem}.metric .val{font-family:var(--mono);font-size:13px;font-weight:500}.metric .lbl{font-size:10px;color:var(--muted);text-transform:uppercase}.assistant-msg{background:var(--surface-2);border-left:3px solid var(--accent);padding:.75rem;border-radius:0 6px 6px 0;margin-bottom:.75rem;white-space:pre-wrap}.error-banner{background:#fef2f2;border:1px solid #fecaca;color:var(--error);padding:.5rem .75rem;border-radius:6px;font-size:13px;margin-bottom:.75rem}.file-drop{border:2px dashed var(--border);border-radius:8px;padding:1.25rem;text-align:center;color:var(--muted);transition:border-color .15s,background .15s}.file-drop.drag{border-color:var(--accent);background:#eff6ff}.file-drop input{display:none}.doc-list{list-style:none;padding:0;margin:.5rem 0 0}.doc-list li{display:flex;align-items:stretch;gap:.5rem;padding:.35rem 0;border-bottom:1px solid var(--border)}.doc-list li.selected{background:#eff6ff;margin:0 -.5rem;padding-left:.5rem;padding-right:.5rem;border-radius:6px}.doc-list-main{flex:1;min-width:0;display:flex;flex-direction:column;align-items:flex-start;gap:.15rem;padding:.25rem .35rem;border:none;background:transparent;text-align:left;font-family:var(--mono);font-size:11px;cursor:pointer}.doc-list-main:hover{color:var(--accent)}.doc-list-title{font-family:var(--sans);font-size:13px;line-height:1.35}.doc-status{color:var(--muted);font-size:11px}.doc-badge{display:inline-block;font-family:var(--sans);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;padding:.1rem .4rem;border-radius:4px}.doc-badge-pdf{background:#fef3c7;color:#92400e}.doc-badge-text{background:#dbeafe;color:#1e40af}.doc-filename{color:var(--muted);font-size:10px}.doc-id{color:var(--muted);font-size:10px;word-break:break-all}.doc-delete{flex-shrink:0;align-self:center;font-size:11px;padding:.3rem .55rem}.empty{color:var(--muted);font-size:13px;font-style:italic}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}.login-card{width:min(100%,380px);background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:2rem;display:flex;flex-direction:column;gap:.75rem;box-shadow:0 8px 24px #1a233214}.login-card h1{margin:0;font-size:1.35rem}.login-card label{font-weight:600;margin-top:.25rem}.login-error{margin:0;color:var(--error);font-size:13px}