:root{--bg:#0f172a;--panel:#1e293b;--border:#334155;--text:#e2e8f0;--muted:#94a3b8;--accent:#1e7f8e;--brand:#17a2b8}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);padding:16px}.sidebar h1{font-size:16px;margin:0 0 16px}.nav a{display:block;padding:8px 10px 8px 18px;border-radius:6px;color:var(--muted)}.nav a.active,.nav a:hover{background:#0b1220;color:var(--text)}.nav a.active{border-left:2px solid var(--accent);border-radius:0 6px 6px 0}.nav-group-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:6px 10px 4px}.content{flex:1 1;padding:24px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:16px;gap:16px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px}.kpi{font-size:28px;font-weight:700}.muted{color:var(--muted);font-size:13px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600}th.sortable{cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;white-space:nowrap}th.sortable:hover{color:var(--text)}.badge{padding:2px 8px;border-radius:999px;font-size:12px;background:#0b1220;border:1px solid var(--border)}.period-bar{display:flex;align-items:center;gap:8px;margin-bottom:20px}.period-btn{padding:6px 14px;border-radius:6px;font-size:13px;cursor:pointer;background:var(--panel);color:var(--muted);border:1px solid var(--border)}.period-btn:hover{color:var(--text)}.period-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}.chart-card{margin-bottom:20px}.chart-title{font-size:14px;font-weight:600;margin:0 0 12px}