:root{--bg: #0f172a;--surface: #1e293b;--surface-2: #273449;--border: #334155;--text: #e2e8f0;--muted: #94a3b8;--primary: #2563eb;--primary-hover: #1d4ed8;--accent: #0b3d91;--danger: #dc2626;--success: #16a34a;--warning: #d97706;--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}a{color:var(--primary)}button{font:inherit;cursor:pointer;border:none;border-radius:8px;padding:9px 16px;background:var(--primary);color:#fff;transition:background .15s}button:hover{background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--surface-2);color:var(--text)}button.danger{background:var(--danger)}button.ghost{background:transparent;color:var(--muted);padding:6px 10px}input,select,textarea{font:inherit;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:9px 12px;width:100%}textarea{resize:vertical;min-height:90px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}.field{margin-bottom:12px}.app-shell{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;gap:6px}.brand{font-weight:700;font-size:18px;color:#fff;margin-bottom:18px;display:flex;align-items:center;gap:8px}.brand .dot{width:10px;height:10px;border-radius:3px;background:var(--primary)}.nav-item{text-align:left;background:transparent;color:var(--muted);padding:10px 12px;border-radius:8px}.nav-item:hover{background:var(--surface-2);color:var(--text)}.nav-item.active{background:var(--primary);color:#fff}.sidebar-footer{margin-top:auto;font-size:13px;color:var(--muted)}.main{flex:1;padding:28px 32px;overflow-y:auto;max-height:100vh}.page-title{font-size:22px;font-weight:700;margin:0 0 18px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:16px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}.row>*{flex:1;min-width:160px}.badge{display:inline-block;font-size:12px;padding:2px 8px;border-radius:999px;background:var(--surface-2);color:var(--muted)}.badge.indexed{background:#14331f;color:#4ade80}.badge.failed,.badge.needs_ocr{background:#3a1414;color:#f87171}.badge.processing,.badge.uploaded{background:#2a2a14;color:#facc15}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600}.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.login-card{width:100%;max-width:380px}.error{color:#f87171;font-size:14px;margin:8px 0}.muted{color:var(--muted)}.notice{background:var(--surface-2);border-left:3px solid var(--warning);padding:10px 14px;border-radius:6px;font-size:14px;margin-bottom:14px}.citation{background:var(--surface-2);border-radius:8px;padding:12px;margin:8px 0;font-size:13px}.citation .quote{color:var(--text);font-style:italic;border-left:2px solid var(--primary);padding-left:10px;margin:6px 0}.answer-box{white-space:pre-wrap;line-height:1.6}.chip-group{display:flex;gap:8px;flex-wrap:wrap}.chip{padding:6px 12px;border-radius:999px;background:var(--surface-2);color:var(--muted);font-size:13px;cursor:pointer;border:1px solid transparent}.chip.active{background:var(--primary);color:#fff}.spinner{color:var(--muted)}.flex-between{display:flex;justify-content:space-between;align-items:center}.tag{font-size:12px;color:var(--muted)}