*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f2f2f7;--bg-card: #ffffff;--bg-input: #e5e5ea;--text: #1c1c1e;--text-dim: #8e8e93;--accent: #e94560;--accent-soft: rgba(233, 69, 96, .1);--green: #34c759;--green-soft: rgba(52, 199, 89, .12);--radius: 12px;--safe-bottom: env(safe-area-inset-bottom, 0px)}html,body{height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior:none}#root{height:100%}.app{display:flex;flex-direction:column;height:100%;max-width:480px;margin:0 auto}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;padding-top:calc(12px + env(safe-area-inset-top,0px))}.app-header h1{font-size:20px;font-weight:700;letter-spacing:-.5px}.app-main{flex:1;overflow-y:auto;padding:0 20px 20px;-webkit-overflow-scrolling:touch}.sync-status{background:none;border:none;color:var(--text-dim);font-size:12px;cursor:pointer;padding:4px 8px;border-radius:8px;transition:background .2s}.sync-status:active{background:var(--bg-input)}.pull-indicator{display:flex;align-items:center;justify-content:center;overflow:hidden;transition:height .3s ease;color:var(--text-dim);font-size:18px}.pull-indicator.pulling{transition:none}.pull-indicator .spin{animation:spin .6s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.stopwatch{text-align:center;padding:32px 0 24px}.timer{font-size:64px;font-weight:200;font-variant-numeric:tabular-nums;letter-spacing:-2px;line-height:1}.current-activity{display:inline-flex;align-items:center;gap:8px;margin-top:12px;padding:6px 16px;background:var(--green-soft);color:var(--green);border-radius:20px;font-size:14px;font-weight:500}.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--green);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.activity-input-area{margin-bottom:16px}.activity-form{display:flex;gap:8px}.activity-input{flex:1;padding:14px 16px;background:var(--bg-input);border:1px solid rgba(0,0,0,.08);border-radius:var(--radius);color:var(--text);font-size:16px;outline:none;transition:border-color .2s}.activity-input:focus{border-color:var(--accent)}.activity-input::placeholder{color:var(--text-dim)}.submit-btn{padding:14px 20px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:opacity .2s}.submit-btn:disabled{opacity:.4;cursor:default}.stop-btn{width:100%;margin-top:8px;padding:10px;background:var(--accent-soft);color:var(--accent);border:1px solid rgba(233,69,96,.3);border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer}.preset-buttons{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.preset-pill{padding:8px 14px;background:var(--bg-card);border:1px solid rgba(0,0,0,.06);border-radius:20px;color:var(--text-dim);font-size:13px;cursor:pointer;transition:all .2s}.preset-pill:hover{color:var(--text);border-color:#00000026}.preset-pill:active{background:var(--bg-input)}.lap-list{display:flex;flex-direction:column;gap:2px}.lap-item{display:flex;align-items:center;padding:12px 14px;background:var(--bg-card);border-radius:var(--radius);gap:12px}.lap-name{flex:1;font-size:15px;font-weight:500}.lap-duration{font-size:14px;color:var(--text-dim);font-variant-numeric:tabular-nums}.lap-delete{background:none;border:none;color:var(--text-dim);font-size:18px;cursor:pointer;padding:4px 8px;border-radius:4px;opacity:.5;transition:opacity .2s}.lap-delete:hover{opacity:1;color:var(--accent)}.summary{padding-top:16px}.summary h2{font-size:18px;font-weight:600;margin-bottom:4px}.summary-total{color:var(--text-dim);font-size:14px;margin-bottom:24px}.summary-empty{color:var(--text-dim);font-size:14px;text-align:center;padding:40px 0}.summary-groups{display:flex;flex-direction:column;gap:12px}.summary-row{display:flex;align-items:center;gap:12px}.summary-name{width:100px;font-size:14px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.summary-count{color:var(--text-dim);font-weight:400;font-size:12px}.summary-bar-track{flex:1;height:8px;background:#0000000f;border-radius:4px;overflow:hidden}.summary-bar-fill{height:100%;background:var(--accent);border-radius:4px;min-width:4px;transition:width .3s ease}.summary-duration{width:60px;text-align:right;font-size:13px;color:var(--text-dim);font-variant-numeric:tabular-nums}.past-days{margin-top:32px}.past-days h3{font-size:15px;font-weight:600;margin-bottom:12px;color:var(--text-dim)}.past-day{background:var(--bg-card);border-radius:var(--radius);padding:14px;margin-bottom:8px}.past-day-header{display:flex;justify-content:space-between;font-size:14px;font-weight:500;margin-bottom:8px}.past-day-items{display:flex;flex-wrap:wrap;gap:6px}.past-day-tag{font-size:12px;color:var(--text-dim);padding:3px 8px;background:#0000000a;border-radius:6px}.bottom-nav{display:flex;border-top:1px solid rgba(0,0,0,.08);padding-bottom:var(--safe-bottom);background:var(--bg)}.nav-tab{flex:1;padding:14px;background:none;border:none;color:var(--text-dim);font-size:14px;font-weight:500;cursor:pointer;transition:color .2s}.nav-tab.active{color:var(--accent)}