:root{color-scheme:light;--navy:#13243c;--navy-2:#1c3455;--blue:#1b75d0;--blue-soft:#eaf3fc;--bg:#f4f6f9;--line:#dfe4eb;--text:#172033;--muted:#667085;--success:#16794a;--danger:#b42318;--warning:#9a6700;--white:#fff;--radius:14px;--shadow:0 10px 28px rgba(22,34,51,.08)}
*{box-sizing:border-box}html{font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--text);background:var(--bg)}body{margin:0;min-height:100vh}a{color:var(--blue);text-decoration:none}button,input,select,textarea{font:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:260px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;background:var(--navy);color:#dbe7f4;padding:28px 18px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;color:#fff;padding:0 8px 26px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(145deg,#2b8ee9,#165fa6);font-size:21px;font-weight:800}.brand strong,.brand small{display:block}.brand small{font-size:12px;color:#9db2ca;margin-top:3px}.sidebar nav{display:grid;gap:7px}.sidebar nav a{color:#dbe7f4;padding:12px 14px;border-radius:10px;font-weight:600}.sidebar nav a:hover{background:var(--navy-2);color:#fff}.sidebar-footer{margin-top:auto;border-top:1px solid #2b4362;padding:20px 10px 0;display:grid;gap:8px;font-size:13px}.link-button{border:0;background:none;color:#8ec5fa;text-align:left;padding:0;cursor:pointer}.content{padding:34px clamp(22px,4vw,58px);max-width:1500px;width:100%;margin:0 auto}.page-head{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-bottom:26px}.page-head h1{margin:0;font-size:29px}.page-head p{margin:6px 0 0;color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:10px 16px;font-weight:700;cursor:pointer}.button-primary{background:var(--blue);color:#fff}.button-secondary{background:#fff;color:var(--text);border-color:var(--line)}.button-danger{background:#fff;color:var(--danger);border-color:#f0b4af}.button-small{padding:7px 11px;font-size:13px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px;margin-bottom:24px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.stat{padding:21px}.stat small{display:block;color:var(--muted);font-weight:700}.stat strong{display:block;font-size:31px;margin-top:11px}.panel{padding:22px;margin-bottom:22px}.panel h2{font-size:18px;margin:0 0 18px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:13px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}.table th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.table tr:last-child td{border-bottom:0}.badge{display:inline-flex;padding:5px 9px;border-radius:99px;font-size:12px;font-weight:800;background:#eef1f5;color:#475467}.badge-ready{background:#e9f7ef;color:var(--success)}.badge-failed{background:#fff0ef;color:var(--danger)}.badge-processing,.badge-pending{background:#fff7df;color:var(--warning)}.filter-row,.upload-form,.chat-form{display:grid;grid-template-columns:minmax(180px,300px) minmax(240px,1fr) auto;gap:12px;align-items:end}.field{display:grid;gap:7px}.field label{font-weight:700;font-size:13px}.input{width:100%;border:1px solid #cbd2dc;border-radius:9px;padding:11px 12px;background:#fff;color:var(--text)}textarea.input{min-height:130px;resize:vertical}.input:focus{outline:3px solid #cce5ff;border-color:var(--blue)}.alert{padding:13px 15px;border-radius:10px;margin-bottom:17px;font-weight:600}.alert-success{background:#e9f7ef;color:var(--success)}.alert-danger{background:#fff0ef;color:var(--danger)}.validation{color:var(--danger);font-size:13px}.empty{text-align:center;padding:42px 20px;color:var(--muted)}.chat-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:20px}.answer{white-space:pre-wrap;line-height:1.65}.source-list{display:grid;gap:10px}.source{border:1px solid var(--line);border-radius:10px;padding:13px}.source strong{display:block;margin-bottom:6px}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 15% 20%,#deecfb,transparent 34%),linear-gradient(135deg,#f4f7fb,#e8eef6)}.login-card{width:min(430px,100%);padding:34px}.login-title{display:flex;align-items:center;gap:13px;margin-bottom:26px}.login-title h1{margin:0;font-size:26px}.login-title p{margin:5px 0 0;color:var(--muted)}.login-form{display:grid;gap:17px}.check{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px}.muted{color:var(--muted)}.inline-form{display:inline}.nowrap{white-space:nowrap}
@media(max-width:980px){.shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;padding:16px}.sidebar nav{grid-template-columns:repeat(3,1fr)}.sidebar-footer{display:none}.brand{padding-bottom:14px}.content{padding:24px 18px}.stats{grid-template-columns:repeat(2,1fr)}.chat-grid{grid-template-columns:1fr}.filter-row,.upload-form,.chat-form{grid-template-columns:1fr}}
@media(max-width:560px){.stats{grid-template-columns:1fr}.page-head{align-items:flex-start;flex-direction:column}.sidebar nav a{text-align:center;padding:10px 6px;font-size:13px}.content{padding:20px 12px}.panel{padding:16px}.table th,.table td{padding:10px 8px}}