*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f1117;--surface: #1a1d27;--border: #2a2d3a;--accent: #6c8df6;--accent2: #f06292;--text: #e2e4ef;--muted: #7b7e94;--radius: 12px}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;min-height:100vh}header{padding:20px 32px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:16px}header h1{font-size:1.25rem;font-weight:600;letter-spacing:-.02em}header .ring{font-size:1.5rem}nav{display:flex;gap:4px;padding:20px 32px 0}nav button{background:none;border:none;padding:10px 20px;border-radius:var(--radius) var(--radius) 0 0;color:var(--muted);font-size:.9rem;font-weight:500;cursor:pointer;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}nav button.active{color:var(--text);border-bottom-color:var(--accent)}nav button:hover:not(.active){color:var(--text)}main{padding:24px 32px 48px;max-width:1100px}.section{display:none}.section.active{display:block}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.section-header h2{font-size:1.1rem;font-weight:600}.date-range{display:flex;align-items:center;gap:8px;font-size:.85rem}.date-range input[type=date]{background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:6px 10px;font-size:.85rem;cursor:pointer}.date-range input[type=date]::-webkit-calendar-picker-indicator{filter:invert(.6)}.date-range .sep{color:var(--muted)}.btn{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:7px 16px;font-size:.85rem;font-weight:500;cursor:pointer;transition:opacity .15s}.btn:hover{opacity:.85}.btn:disabled{opacity:.4;cursor:default}.tags-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}.tag-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.tag-card .tag-text{font-size:.95rem;font-weight:500;margin-bottom:8px;line-height:1.4}.tag-card .tag-note{font-size:.85rem;color:var(--muted);margin-top:4px}.tag-card .tag-meta{font-size:.78rem;color:var(--muted);margin-top:8px}.tag-card .tag-pills{margin-top:8px}.tag-pill{display:inline-block;background:#6c8df626;color:var(--accent);border-radius:99px;padding:2px 10px;font-size:.75rem;margin:4px 4px 0 0}.chart-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}.stats-row{display:flex;gap:24px;margin-bottom:24px}.stat{display:flex;flex-direction:column;gap:2px}.stat .value{font-size:1.6rem;font-weight:700;letter-spacing:-.03em}.stat .label{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.stat.avg .value{color:var(--accent)}.stat.min .value{color:#4dd0e1}.stat.max .value{color:var(--accent2)}.day-nav{display:flex;align-items:center;gap:8px}.nav-arrow{background:transparent;border:1px solid var(--border);border-radius:20px;color:var(--muted);padding:6px 14px;font-size:.82rem;font-weight:500;letter-spacing:.02em;cursor:pointer;display:flex;align-items:center;gap:5px;transition:color .15s,border-color .15s,background .15s;white-space:nowrap}.nav-arrow:hover{color:var(--text);border-color:var(--accent);background:#6c8df614}#hr-day{font-size:.88rem;font-weight:600;letter-spacing:.01em}.chart-wrap{position:relative;height:320px}.empty{text-align:center;padding:64px 0;color:var(--muted);font-size:.9rem}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle;margin-right:8px}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{background:#f062921a;border:1px solid rgba(240,98,146,.3);color:var(--accent2);border-radius:8px;padding:12px 16px;font-size:.85rem}