:root{--primary:#3b82f6;--primary-dark:#1d4ed8;--bg:#f8fafc;--surface:#fff;--border:#e2e8f0;--text:#1e293b;--text-muted:#64748b;--radius:8px;--shadow:0 1px 3px #0000001a, 0 1px 2px #0000000f}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5}.app-layout{min-height:100vh;display:flex}.sidebar{background:var(--surface);border-right:1px solid var(--border);flex-direction:column;width:220px;height:100vh;padding:24px 0;display:flex;position:fixed;top:0;left:0}.sidebar-logo{border-bottom:1px solid var(--border);margin-bottom:12px;padding:0 20px 24px;font-size:16px;font-weight:700}.sidebar-logo span{color:var(--primary)}.sidebar nav{flex-direction:column;gap:2px;padding:0 8px;display:flex}.nav-link{border-radius:var(--radius);cursor:pointer;color:var(--text-muted);text-align:left;background:0 0;border:none;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;font-weight:500;transition:background .15s,color .15s;display:flex}.nav-link:hover{background:var(--bg);color:var(--text)}.nav-link.active{color:var(--primary);background:#eff6ff}.main-content{flex:1;max-width:calc(100vw - 220px);margin-left:220px;padding:32px}.page-title{margin-bottom:24px;font-size:22px;font-weight:700}.kpi-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:32px;display:grid}.kpi-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.kpi-card .label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:8px;font-size:12px;font-weight:600}.kpi-card .value{font-size:28px;font-weight:700}.kpi-card .unit{color:var(--text-muted);margin-left:4px;font-size:13px}.kpi-card.loading .value{background:var(--border);color:#0000;border-radius:4px;animation:1.5s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.chart-grid{grid-template-columns:repeat(auto-fit,minmax(480px,1fr));gap:20px;margin-bottom:24px;display:grid}.chart-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.chart-card h3{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px;font-size:14px;font-weight:600}.filters{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px;display:flex}.filters label{color:var(--text-muted);font-size:13px;font-weight:600}.filters select{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);cursor:pointer;padding:6px 10px;font-size:13px}.table-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.table-wrapper{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13px}thead th{background:var(--bg);text-align:left;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap;cursor:pointer;-webkit-user-select:none;user-select:none;padding:10px 14px;font-size:12px;font-weight:600}thead th:hover{color:var(--text)}thead th.sorted{color:var(--primary)}tbody tr{border-bottom:1px solid var(--border)}tbody tr:hover{background:var(--bg)}tbody td{padding:9px 14px}.badge{color:var(--primary);background:#eff6ff;border-radius:99px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.badge.Run{color:#92400e;background:#fef3c7}.badge.Walk{color:#065f46;background:#d1fae5}.badge.Ride{color:#5b21b6;background:#ede9fe}.badge.Workout{color:#991b1b;background:#fee2e2}.pagination{border-top:1px solid var(--border);color:var(--text-muted);justify-content:space-between;align-items:center;padding:12px 16px;font-size:13px;display:flex}.pagination-controls{gap:8px;display:flex}.pagination button{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);cursor:pointer;padding:5px 14px;font-size:13px}.pagination button:disabled{opacity:.4;cursor:not-allowed}.pagination button:not(:disabled):hover{background:var(--bg)}.error-state{border-radius:var(--radius);color:#991b1b;background:#fee2e2;border:1px solid #fca5a5;padding:16px;font-size:14px}