:root{--bg: #f6f7f9;--surface: #ffffff;--ink: #14181f;--muted: #6b7280;--hairline: #e6e8ec;--lead: #2333c4;--leaf: #1f9d55;--coral: #e1564b;--gold: #e7a23b;--radius: 12px;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink)}*{box-sizing:border-box}body{margin:0;background:var(--bg)}a{color:var(--lead);text-decoration:none}.app{display:flex;min-height:100vh}.sidebar{width:224px;background:var(--surface);border-right:1px solid var(--hairline);padding:20px 14px;position:sticky;top:0;height:100vh;flex-shrink:0}.brand{font-weight:700;font-size:16px;padding:6px 10px 18px;letter-spacing:-.2px}.brand span{color:var(--lead)}.nav a{display:block;padding:9px 12px;border-radius:9px;color:var(--ink);font-size:14px;font-weight:500;margin-bottom:2px}.nav a.active{background:#2333c414;color:var(--lead)}.nav a:hover:not(.active){background:#f0f1f4}.main{flex:1;padding:26px 30px;max-width:1100px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}h1{font-size:22px;margin:0;letter-spacing:-.3px}.muted{color:var(--muted)}.sidebar-foot{position:absolute;bottom:18px;left:14px;right:14px;font-size:12px;color:var(--muted)}.grid{display:grid;gap:14px}.grid.cols-4{grid-template-columns:repeat(4,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}.card{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius);padding:16px}.metric .label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}.metric .value{font-size:28px;font-weight:700;margin-top:6px;letter-spacing:-.5px}.metric .sub{font-size:12px;color:var(--muted);margin-top:4px}table{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius);overflow:hidden}th,td{text-align:left;padding:11px 14px;font-size:14px;border-bottom:1px solid var(--hairline)}th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;background:#fafbfc}tr:last-child td{border-bottom:none}tbody tr:hover{background:#fafbfc}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}.badge.on{background:#1f9d5524;color:var(--leaf)}.badge.off{background:#eceef1;color:var(--muted)}.badge.admin{background:#e7a23b2e;color:#9a6b15}button{font:inherit;font-size:13px;font-weight:600;cursor:pointer;border:1px solid var(--hairline);background:var(--surface);color:var(--ink);padding:7px 13px;border-radius:9px}button:hover{background:#f0f1f4}button.primary{background:var(--lead);color:#fff;border-color:var(--lead)}button.primary:hover{opacity:.92;background:var(--lead)}button:disabled{opacity:.5;cursor:default}.row{display:flex;gap:8px;align-items:center}.spacer{flex:1}input,select{font:inherit;font-size:14px;padding:8px 11px;border:1px solid var(--hairline);border-radius:9px;background:var(--surface);color:var(--ink)}input:focus,select:focus{outline:none;border-color:var(--lead)}.login{display:flex;align-items:center;justify-content:center;min-height:100vh}.login .card{width:340px}.login h1{margin-bottom:4px}.login label{display:block;font-size:13px;color:var(--muted);margin:14px 0 5px}.login input{width:100%}.error{color:var(--coral);font-size:13px;margin-top:12px}.score{display:inline-flex;width:26px;height:26px;border-radius:7px;color:#fff;align-items:center;justify-content:center;font-weight:700;font-size:13px}.center{text-align:center;padding:40px;color:var(--muted)}.section-title{font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:26px 0 10px}.pagination{display:flex;gap:8px;align-items:center;margin-top:14px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center}.modal{background:var(--surface);border-radius:var(--radius);padding:22px;width:460px;max-width:92vw;max-height:90vh;overflow:auto}.chart-bars{display:flex;align-items:flex-end;gap:2px;height:140px}.chart-bar-col{flex:1;height:100%;display:flex;align-items:flex-end}.chart-bar{width:100%;border-radius:3px 3px 0 0;min-height:1px;transition:height .2s}.chart-axis{display:flex;justify-content:space-between;margin-top:8px;font-size:12px;color:var(--muted)}