:root{--bg: #ffffff;--bg-subtle: #f7f7f8;--border: #e2e2e6;--text: #1c1c1e;--text-muted: #6b6b70;--accent: #2b6cb0;--badge-bg: #fdecec;--badge-text: #b3261e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:14px}button{font-family:inherit;font-size:14px;cursor:pointer;border:1px solid var(--border);background:var(--bg);border-radius:6px;padding:6px 12px;color:var(--text)}button:disabled{opacity:.5;cursor:not-allowed}button:hover:not(:disabled){background:var(--bg-subtle)}.link-button{border:none;background:none;color:var(--accent);padding:4px 6px}input,select{font-family:inherit;font-size:14px;border:1px solid var(--border);border-radius:6px;padding:6px 8px;background:var(--bg);color:var(--text)}label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--text-muted)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:360px;border:1px solid var(--border);border-radius:10px;padding:32px}.login-card h1{font-size:20px;margin:0 0 8px}.login-sub{color:var(--text-muted);margin:0 0 24px}.login-card form{display:flex;flex-direction:column;gap:12px}.login-hint{color:var(--text-muted);margin:0}.login-error{color:var(--badge-text);margin-top:16px}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:24px;padding:12px 20px;border-bottom:1px solid var(--border)}.app-title{display:flex;flex-direction:column;gap:2px}.app-study-name{font-size:12px;color:var(--text-muted)}.app-tabs{display:flex;gap:4px;flex:1}.app-tab{border:none;background:none;border-radius:6px;padding:8px 14px;color:var(--text-muted)}.app-tab.active{background:var(--bg-subtle);color:var(--text);font-weight:600}.app-main{flex:1;padding:20px;overflow-x:auto}.page{display:flex;flex-direction:column;gap:16px;max-width:100%}.page-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.page-header h2{margin:0;font-size:18px}.page-header-meta{display:flex;align-items:center;gap:12px;color:var(--text-muted);font-size:13px}.page-loading,.page-error,.picker-empty{color:var(--text-muted)}.page-error{color:var(--badge-text)}.controls-row{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end}.date-range{display:flex;gap:12px;align-items:flex-end}.date-range-warning{color:var(--badge-text);font-size:12px;align-self:center}.picker-list{display:flex;flex-direction:column;gap:6px;max-height:220px;overflow-y:auto;border:1px solid var(--border);border-radius:6px;padding:8px 12px}.picker-item{flex-direction:row;align-items:center;gap:8px;font-size:14px;color:var(--text)}.stream-select{min-width:220px}.table-scroll{overflow-x:auto;border:1px solid var(--border);border-radius:8px}table{border-collapse:collapse;width:100%;font-size:13px}thead th{position:sticky;top:0;background:var(--bg-subtle);text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);white-space:nowrap}tbody td{padding:8px 10px;border-bottom:1px solid var(--border);white-space:nowrap}.badge-cell{display:flex;gap:6px}.badge{display:inline-block;background:var(--badge-bg);color:var(--badge-text);border-radius:4px;padding:2px 8px;font-size:12px;white-space:nowrap}.heatmap-scroll{overflow-x:auto;border:1px solid var(--border);border-radius:8px}.heatmap-table{border-collapse:separate;border-spacing:2px}.heatmap-corner,.heatmap-date-head{font-size:11px;color:var(--text-muted);font-weight:400;padding:4px;text-align:center;white-space:nowrap}.heatmap-row-label{font-size:12px;padding:4px 10px 4px 4px;white-space:nowrap;border:none}.heatmap-cell-wrap{padding:0;border:none}.heatmap-cell{border:none;border-radius:3px;padding:0;display:block}.chart-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.chart-svg{border:1px solid var(--border);border-radius:8px;background:var(--bg)}.chart-title{font-size:11px;fill:var(--text-muted)}.chart-tick{font-size:9px;fill:var(--text-muted)}.chart-gridline{stroke:var(--border);stroke-width:1}.chart-line{stroke:var(--accent);stroke-width:1.5}.chart-dot{fill:var(--accent)}.chart-empty{fill:var(--text-muted);font-size:12px}.export-columns{display:flex;flex-wrap:wrap;gap:24px}.export-column{min-width:220px}.export-column h3{font-size:13px;color:var(--text-muted);margin:0 0 8px}.export-progress{color:var(--text-muted)}.detail-meta{color:var(--text-muted);margin:0}