:root{--bg:#f4f6f9;--surface:#fff;--border:#e2e6ec;--text:#14181f;--text-muted:#5b6472;--brand:#146c5b;--brand-dark:#0e5245;--danger:#c0392b;--radius:10px}*{box-sizing:border-box}body,html{padding:0;margin:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:inherit}.page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px}.auth-card{width:100%;max-width:380px}.brand{font-size:22px;font-weight:700;color:var(--brand-dark);margin-bottom:4px}.tagline{font-size:13px;color:var(--text-muted);margin-bottom:24px}.field{margin-bottom:16px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text-muted)}.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--brand);outline-offset:1px}.field-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));grid-gap:16px;gap:16px}.field-checkbox{display:flex;align-items:center;gap:8px;margin-bottom:16px}.field-checkbox input{width:auto}.btn-secondary{padding:11px 16px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;font-size:14px;cursor:pointer}.btn-secondary:hover{background:var(--bg)}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600}.badge-on{background:#e3f5ef;color:var(--brand-dark)}.badge-off{background:#f1f2f4;color:var(--text-muted)}.btn{width:100%;padding:11px 16px;border-radius:8px;border:none;background:var(--brand);color:#fff;font-weight:600;font-size:14px;cursor:pointer}.btn:hover{background:var(--brand-dark)}.btn:disabled{opacity:.6;cursor:not-allowed}.error-text{color:var(--danger);font-size:13px;margin-bottom:12px}.shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--surface);border-right:1px solid var(--border);padding:20px 16px}.sidebar .brand{margin-bottom:24px}.nav-link{display:block;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--text-muted);text-decoration:none;margin-bottom:2px}.nav-link.active{background:var(--bg);color:var(--text);font-weight:600}.main{flex:1 1;padding:28px 32px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.topbar h1{font-size:20px;margin:0}.logout-link{font-size:13px;color:var(--text-muted);cursor:pointer;background:none;border:none}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:16px;gap:16px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px}.stat-label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}.stat-value{font-size:24px;font-weight:700}.empty-note{font-size:13px;color:var(--text-muted);margin-top:24px}