:root{--bg:#f5f7fb;--panel:#fff;--text:#101828;--muted:#667085;--line:#d8dee9;--brand:#172554;--brand2:#2563eb;--danger:#b42318;--ok:#027a48;--warn:#b54708;--shadow:0 18px 60px rgba(16,24,40,.08);--radius:18px}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.login-page{min-height:100vh;display:grid;place-items:center;padding:28px;background:radial-gradient(circle at top left,rgba(37,99,235,.18),transparent 32%),var(--bg)}.login-card{width:min(440px,100%);background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:28px}.login-card h1{margin:0 0 8px;font-size:28px;letter-spacing:-.04em}.login-card p{margin:0 0 22px;color:var(--muted)}.form-stack{display:grid;grid-gap:14px;gap:14px}.field{display:grid;grid-gap:7px;gap:7px}.field label{font-weight:800;font-size:13px}.input,.select,.textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:#fff;color:var(--text)}.textarea{min-height:86px;resize:vertical}.btn{border:0;border-radius:12px;padding:11px 14px;font-weight:800;cursor:pointer;background:var(--brand);color:#fff}.btn.secondary{background:#eef2ff;color:var(--brand)}.btn.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}.btn:disabled{opacity:.55;cursor:not-allowed}.alert{padding:11px 12px;border-radius:12px;background:#fff3f0;color:var(--danger);border:1px solid #fecdca}.shell{min-height:100vh;display:grid;grid-template-columns:264px minmax(0,1fr)}.sidebar{background:#07132a;color:#dbeafe;padding:18px;display:flex;flex-direction:column;gap:18px}.brand{display:flex;align-items:center;gap:10px;padding:10px 8px 18px;border-bottom:1px solid rgba(255,255,255,.1)}.brand-mark{width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,#60a5fa,#1d4ed8);display:grid;place-items:center;font-weight:900}.brand strong{display:block}.brand span{color:#93c5fd;font-size:12px}.nav{display:grid;grid-gap:6px;gap:6px}.nav a{color:#cbd5e1;padding:10px 12px;border-radius:12px;font-weight:700;font-size:14px}.nav a:hover{background:rgba(255,255,255,.09);color:#fff}.sidebar-footer{margin-top:auto;font-size:12px;color:#93a4bc}.main{min-width:0;display:flex;flex-direction:column}.topbar{height:68px;background:rgba(255,255,255,.88);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);justify-content:space-between;padding:0 22px;position:-webkit-sticky;position:sticky;top:0;z-index:10}.topbar,.topbar-left{display:flex;align-items:center}.topbar-left{gap:12px}.topbar-title{font-weight:900}.content{padding:22px;min-width:0}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card-pad{padding:18px}.grid{display:grid;grid-gap:16px;gap:16px}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.metric{padding:18px}.metric span{color:var(--muted);font-size:13px;font-weight:700}.metric strong{display:block;margin-top:8px;font-size:28px;letter-spacing:-.04em}.page-title{margin:0 0 18px;font-size:30px;letter-spacing:-.05em}.muted{color:var(--muted)}.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:800;background:#eef2ff;color:#1e40af}.badge.ok{background:#ecfdf3;color:var(--ok)}.badge.warn{background:#fffaeb;color:var(--warn)}.badge.danger{background:#fef3f2;color:var(--danger)}.chat-grid{height:calc(100vh - 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