:root{color-scheme:dark;--bg:#151a1b;--grid:#d9d3a80d;--panel:#1a2021;--line:#ffffff1a;--line-strong:#ffffff33;--text:#e9edeb;--muted:#a2aaa7;--ivory:#f1eee4;--sand:#d9d3a8;--sage:#b5c6aa;--warn:#e3b341;--over:#e5674f;--input:#111718}
.light{color-scheme:light;--bg:#f4f2ea;--grid:#17202208;--panel:#fbfaf5;--line:#1720221f;--line-strong:#17202240;--text:#172022;--muted:#56605f;--ivory:#172022;--sand:#2e4747;--sage:#2e4747;--input:#fff}
*{box-sizing:border-box}
html{background:var(--bg);color:var(--text);font-family:"BIZ UDPGothic",system-ui,sans-serif;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:16px 16px;transition:background-color .3s}
button,input,select{font:inherit;color:inherit}
a{color:var(--sage)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px clamp(16px,5vw,64px);border-bottom:1.5px solid var(--line)}
.site-header a{text-decoration:none}
.brand{font-family:Manrope,sans-serif;font-size:16px;font-weight:800;color:var(--ivory)}
.header-actions{display:flex;align-items:center;gap:24px}
.product-name{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:14px}
.language{border:1px solid var(--line-strong);padding:6px 12px;font:600 12px "IBM Plex Mono",monospace;color:var(--text)}

main{width:min(100%,1080px);margin:0 auto;padding:16px 16px 64px;flex:1}

.modes{display:flex;overflow-x:auto;border-bottom:1.5px solid var(--line);margin-bottom:8px;scrollbar-width:none}
.modes::-webkit-scrollbar{display:none}
.modes button{flex:0 0 auto;background:none;border:0;border-bottom:2px solid transparent;padding:12px 14px 10px;cursor:pointer;color:var(--muted);font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:14px;white-space:nowrap}
.modes button span{font:500 10px "IBM Plex Mono",monospace;margin-right:6px;color:var(--sand);opacity:.7}
.modes button[aria-pressed=true]{color:var(--ivory);border-bottom-color:var(--sand)}

.stage{position:relative;padding-top:8px}
.tools{display:flex;justify-content:flex-end;gap:8px;margin-bottom:4px}
.panel[hidden]{display:none}

.label{font:500 12px "IBM Plex Mono",monospace;letter-spacing:.14em;color:var(--sand);text-align:center;margin:16px 0 0;text-transform:uppercase;min-height:1.2em}
.digits{display:block;width:100%;background:none;border:0;padding:0;margin:8px 0 12px;font-family:"IBM Plex Mono",monospace;font-weight:500;font-variant-numeric:tabular-nums;font-size:clamp(64px,17vw,200px);line-height:1;letter-spacing:-.04em;color:var(--ivory);text-align:center;cursor:pointer;transition:color .2s}
.digits.static{cursor:default}
.digits:focus-visible{outline:1px dashed var(--sand);outline-offset:8px}
.bar{height:3px;background:var(--line);margin:0 auto;max-width:720px}
.bar i{display:block;height:100%;width:0;background:var(--sand)}
.meta{text-align:center;color:var(--muted);font:400 13px "IBM Plex Mono",monospace;margin:10px 0 18px;min-height:1.4em}

.controls{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:24px}
button{background:transparent;border:1px solid var(--line-strong);padding:10px 16px;min-height:44px;cursor:pointer;font-weight:700;font-size:14px}
button:hover{border-color:var(--sand)}
button.primary{background:var(--sand);border-color:var(--sand);color:#151a1b;min-width:120px}
.light button.primary{color:#fbfaf5}
button.ghost{min-height:34px;padding:4px 10px;font:500 12px "IBM Plex Mono",monospace;color:var(--muted)}
button.on{color:var(--sand);border-color:var(--sand)}

.setup,.settings,.split,.explain{border-top:1.5px solid var(--line);padding-top:16px;margin-top:8px}
.row{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;margin:10px 0}
label{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
input[type=number],input[type=text],input[type=time],input[type=datetime-local],select{background:var(--input);border:1px solid var(--line-strong);padding:8px 10px;font-size:16px;color:var(--text);border-radius:0}
input[type=number]{width:76px;font-family:"IBM Plex Mono",monospace}
input[type=text]{min-width:0;flex:1 1 160px}
input[type=time],input[type=datetime-local]{min-width:0;max-width:100%}
label{max-width:100%}
input[type=range]{accent-color:var(--sand)}
input[type=checkbox]{accent-color:var(--sand);width:18px;height:18px}
.check{color:var(--text)}
.hms{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.hms input{min-width:0;width:100%}
.hms label{flex-direction:column;align-items:stretch;gap:6px;font:500 12px "IBM Plex Mono",monospace}
.hms input[type=number]{width:100%;font-size:20px;text-align:center}
.presets{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.presets button{min-height:36px;padding:6px 12px;font:500 13px "IBM Plex Mono",monospace}
.presets button.custom{border-style:dashed}
.presets .x{border:0;padding:0 4px;min-height:0;color:var(--muted)}
details summary{cursor:pointer;font:500 12px "IBM Plex Mono",monospace;letter-spacing:.1em;color:var(--sand);margin-bottom:8px}
.grid{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center}
.hint,.empty{color:var(--muted);font-size:13px;line-height:1.8;text-align:center}
.sub{font-family:"Zen Kaku Gothic New",sans-serif;font-size:15px;color:var(--ivory);margin:16px 0 4px}
.stat{color:var(--muted);font-size:13px}.stat b{color:var(--ivory);font-family:"IBM Plex Mono",monospace;font-size:18px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:32px}

.list{list-style:none;margin:8px 0;padding:0}
.list li{display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding:8px 0;font-size:14px}
.list li .grow{flex:1}
.list li.done .grow{text-decoration:line-through;color:var(--muted)}
.list li.active{color:var(--sand)}
.list li.active .grow::before{content:"▸ "}
.list li button{min-height:32px;padding:2px 10px;font-size:12px}
.list .num{font:500 12px "IBM Plex Mono",monospace;color:var(--muted)}
.agenda{counter-reset:ag}
.agenda li::before{counter-increment:ag;content:counter(ag,decimal-leading-zero);font:500 11px "IBM Plex Mono",monospace;color:var(--sand)}
.agenda li.past{color:var(--muted)}
.agenda li.over .num{color:var(--over)}

.week{display:flex;gap:6px;align-items:flex-end;height:80px;margin:12px 0;border-bottom:1px solid var(--line)}
.week div{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;font:400 10px "IBM Plex Mono",monospace;color:var(--muted)}
.week i{display:block;width:60%;background:var(--sage);min-height:1px;margin-bottom:4px}

.laps{width:100%;max-width:560px;margin:0 auto;border-collapse:collapse;font-family:"IBM Plex Mono",monospace;font-size:15px}
.laps th{font-weight:500;font-size:11px;color:var(--muted);text-align:right;border-bottom:1.5px solid var(--line);padding:6px}
.laps td{text-align:right;padding:8px 6px;border-bottom:1px solid var(--line)}
.laps th:first-child,.laps td:first-child{text-align:left}
.laps .best{color:var(--sage)}.laps .worst{color:var(--over)}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));border-top:1.5px solid var(--line);border-left:1px solid var(--line);margin-top:12px}
.cards>div{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px}
.cards h3{margin:0;font:700 14px "Zen Kaku Gothic New",sans-serif;color:var(--ivory);display:flex;justify-content:space-between;gap:8px}
.cards .mini{font:500 40px "IBM Plex Mono",monospace;font-variant-numeric:tabular-nums;color:var(--ivory);margin:8px 0;letter-spacing:-.03em}
.cards .small{font:400 12px "IBM Plex Mono",monospace;color:var(--muted)}
.cards .row{margin:6px 0 0}
.cards button{min-height:34px;padding:4px 12px;font-size:13px}
.cards .done .mini{color:var(--over)}
.cards .bar{margin:0}

/* 状態 */
.st-warn .digits{color:var(--warn)}.st-warn .bar i{background:var(--warn)}
.st-over .digits{color:var(--over)}.st-over .bar i{background:var(--over)}
body.bg-warn{background-color:#3a3214}body.bg-over{background-color:#3f1a14}
.light body.bg-warn{background-color:#fbefc4}.light body.bg-over{background-color:#f8d4cc}
body.ringing .digits{animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.25}}

.alarm{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:20;display:flex;align-items:center;gap:16px;background:var(--panel);border:1.5px solid var(--sand);padding:12px 12px 12px 20px;max-width:calc(100% - 32px)}
.alarm[hidden]{display:none}
.alarm p{margin:0;font-weight:700;color:var(--ivory)}

/* 集中表示 */
.focus .site-header,.focus .modes,.focus .setup,.focus .settings,.focus .split,.focus .explain,.focus .kl-footer,.focus .hint,.focus .empty,.focus #p-meet h2,.focus #agForm,.focus .laps thead{display:none}
.focus main{display:flex;flex-direction:column;justify-content:center;min-height:100vh;padding-top:0}
.focus .digits{font-size:clamp(80px,24vw,420px)}
.focus .tools{position:fixed;top:12px;right:12px;opacity:.35}
.focus .tools:hover{opacity:1}
.focus .controls{opacity:.4}.focus .controls:hover{opacity:1}

.explain{margin-top:56px;max-width:760px}
.explain h2{font-family:"Zen Kaku Gothic New",sans-serif;font-size:18px;color:var(--ivory);margin:24px 0 12px}
.explain dl{margin:0}
.explain dt{font-weight:700;color:var(--sand);margin-top:16px;font-size:14px}
.explain dd{margin:4px 0 0;color:var(--muted);line-height:1.9;font-size:14px}
.explain li{color:var(--muted);line-height:1.9;font-size:14px}
.explain .more{color:var(--muted);line-height:1.9;font-size:14px;margin:20px 0 0}

@media (max-width:700px){
  .split{grid-template-columns:1fr;gap:8px}
  .hms{gap:8px}
  .header-actions{gap:12px}
  .controls button{flex:1 1 auto}
  .cards .mini{font-size:34px}
}
@media (prefers-reduced-motion:reduce){body.ringing .digits{animation:none}}