:root{--bg: #121314;--panel: #1a1b1d;--line: #2a2d31;--text: #eceef1;--muted: #9ba1aa;--primary: #8fb4ff;--running: #7ad7a8;--paused: #dfc37b;--done: #ef9fae}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;width:100%;min-height:100%;background:var(--bg);color:var(--text);font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans JP,sans-serif}.app{width:min(680px,100%);margin:0 auto;padding:calc(env(safe-area-inset-top,0px) + 12px) 12px calc(env(safe-area-inset-bottom,0px) + 18px)}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.top-actions,.top-icons{display:flex;align-items:center;gap:8px}.app-icon{width:28px;height:28px;border-radius:8px}.material-symbols-outlined{font-size:22px;line-height:1}.top-label{color:var(--text);font-size:1rem;font-weight:600;letter-spacing:.01em}h2{margin:0;color:var(--text);font-size:1rem;font-weight:600}.card{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:14px}.card+.card{margin-top:10px}.app-copyright{margin:18px 0 0;color:var(--muted);font-size:.78rem;text-align:center}.timer-ring{--progress: 100;--ring: var(--primary);width:min(62vw,260px);height:min(62vw,260px);margin:2px auto 10px;border-radius:50%;background:conic-gradient(var(--ring) calc(var(--progress) * 1%),#2a2d31 0);display:grid;place-items:center}.timer-center{width:82%;height:82%;border-radius:50%;border:1px solid #30343a;background:#181a1d;display:grid;place-content:center;text-align:center}.time{margin:0;font-size:clamp(2rem,11vw,3.2rem);font-weight:600;letter-spacing:.04em}.controls{margin-top:10px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.btn,.text-btn,input,select{min-height:42px;border-radius:10px;border:1px solid var(--line);background:#1f2226;color:var(--text);font-size:.95rem}.btn,.text-btn{cursor:pointer;font-weight:500;display:inline-flex;align-items:center;justify-content:center}.btn-primary{border-color:#45536f;background:#252d3c}.btn:disabled{opacity:.45}.text-btn{min-height:36px;padding:0 12px}.todo-head{display:flex;align-items:center;justify-content:flex-start;margin-bottom:10px}.todo-form{display:grid;grid-template-columns:1fr;gap:8px;margin-bottom:8px}input,select{width:100%;padding:0 12px}.todo-list{margin:0;padding:0;list-style:none;display:grid;gap:6px}.todo-item{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}.todo-main{width:100%;min-height:44px;border:1px solid var(--line);border-radius:10px;background:#1f2226;padding:0 10px;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px;cursor:grab}.todo-main:active{cursor:grabbing}.todo-check{width:18px;height:18px;margin:0;padding:0}.todo-edit-input{min-height:40px;border:0;background:transparent;padding:0 2px;font-size:.95rem;outline:none}.todo-title{display:block;font-size:.95rem;color:var(--text);word-break:break-word}.todo-item.done .todo-title{text-decoration:line-through;color:var(--muted)}.todo-item.editing .todo-main{border-color:#45536f;background:#252d3c}.todo-delete{min-width:44px;min-height:42px}.sortable-ghost{opacity:.45}.sortable-ghost .todo-main{border-style:dashed}.sortable-chosen .todo-main{border-color:#5b6f93}.sortable-fallback{opacity:.92}.sortable-drag{opacity:0}.sheet{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;visibility:hidden;pointer-events:none}.sheet.open{visibility:visible;pointer-events:auto}.sheet-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;border:0;background:#00000080}.sheet-panel{position:absolute;right:0;bottom:0;left:0;background:#181a1d;border-top:1px solid #2f3338;border-top-left-radius:14px;border-top-right-radius:14px;padding:12px;padding-bottom:calc(env(safe-area-inset-bottom,0px) + 12px);transform:translateY(105%);transition:transform .18s ease}.sheet.open .sheet-panel{transform:translateY(0)}.info-dialog{width:min(560px,calc(100% - 24px));border:0;padding:0;background:transparent;color:var(--text)}.info-dialog::backdrop{background:#000000a6}.dialog-card{border:1px solid var(--line);border-radius:16px;background:#181a1d;padding:16px}.dialog-copy{display:grid;gap:10px;color:var(--muted);line-height:1.6}.dialog-copy p{margin:0}.dialog-lead{color:var(--text)}.dialog-credit{margin-top:6px;font-size:.95rem}.dialog-credit a{color:var(--text)}.dialog-actions{display:flex;justify-content:flex-end;margin-top:14px}.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.row{display:flex;justify-content:space-between;align-items:center;min-height:42px}.row+.row{margin-top:8px}.row-icon{color:var(--muted)}.check-row{justify-content:space-between;gap:8px}.check-row input{width:20px;height:20px}