:root{
  --bg:#f6f7f9;--card:#fff;--ink:#0f172a;--muted:#64748b;--line:#e5e7eb;
  --accent:#0ea5e9;--done:#16a34a;--warn:#f59e0b;--race:#fef3c7;
  --run:#f97316;--swim:#0ea5e9;--bike:#8b5cf6;--rest:#94a3b8;
  --safe-b:env(safe-area-inset-bottom);--safe-t:env(safe-area-inset-top);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0b1120;--card:#131c2e;--ink:#e2e8f0;--muted:#94a3b8;--line:#1f2a40;--race:#3a2f0b;
}}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif;
  -webkit-text-size-adjust:100%;font-size:16px}
.hidden{display:none!important}
button,input,textarea{font:inherit;color:inherit}
input,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg)}
label{display:block;font-size:13px;color:var(--muted);margin:8px 0}
label input,label textarea{margin-top:4px;color:var(--ink);font-size:16px}
.primary{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:11px 18px;font-weight:600}
.ghost{background:transparent;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.wide{width:100%;margin-top:12px}
.link{background:none;border:0;color:var(--accent);padding:4px 0;margin:0 auto 6px;display:block}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600}
.muted{color:var(--muted)}.small{font-size:13px}.err{color:#dc2626;min-height:1em}

.screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{width:100%;max-width:340px;background:var(--card);padding:28px;border-radius:18px;box-shadow:0 4px 24px rgba(0,0,0,.06)}
.login-card h1{margin:0;font-size:22px}.login-card input{margin:18px 0 12px}.login-card button{width:100%}

.top{position:sticky;top:0;z-index:5;background:var(--bg);padding:calc(8px + var(--safe-t)) 12px 6px}
.races{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.races::-webkit-scrollbar{display:none}
.race{flex:1 0 auto;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px 10px;font-size:12px;line-height:1.3}
.race b{font-size:18px}.race.past{opacity:.45}

main{padding:4px 12px calc(84px + var(--safe-b));max-width:640px;margin:0 auto}
.weeknav{display:flex;align-items:center;gap:8px;margin:6px 0}
.weeknav .ghost{font-size:22px;width:44px;height:44px;padding:0}
.weektitle{flex:1;text-align:center}
.wlabel{font-weight:700;font-size:18px}
.phase{display:inline-block;margin-top:3px;font-size:12px;padding:2px 10px;border-radius:999px;background:var(--line)}
.point{background:var(--card);border-left:4px solid var(--accent);padding:10px 12px;border-radius:8px;font-size:14px;margin:6px 0 12px}

.session{background:var(--card);border-radius:14px;margin-bottom:10px;border:1px solid var(--line);overflow:hidden}
.session.race-day{background:var(--race)}
.srow{display:flex;align-items:center;gap:12px;padding:12px}
.check{flex:0 0 34px;height:34px;border-radius:50%;border:2px solid var(--line);background:transparent;position:relative}
.session.done .check{background:var(--done);border-color:var(--done)}
.session.done .check::after{content:"";position:absolute;left:11px;top:5px;width:7px;height:14px;border:solid #fff;border-width:0 3px 3px 0;transform:rotate(45deg)}
.session.rest .check{visibility:hidden}
.sbody{flex:1;min-width:0}
.slabel{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.splan{font-weight:600;margin-top:2px;word-break:break-word}
.session.done .splan{color:var(--muted)}
.ssummary{font-size:12px;color:var(--done);margin-top:3px}
.more{font-size:13px;padding:6px 10px}
.sform{padding:0 12px 12px;border-top:1px solid var(--line)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 10px}
.frow{display:flex;gap:8px;margin-top:10px}
details{margin:6px 0;font-size:13px;color:var(--muted)}details input{margin-top:6px}
.memo{margin-top:14px}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:6px 0 12px}
.stat{background:var(--card);border-radius:12px;padding:10px;text-align:center;border:1px solid var(--line)}
.stat b{display:block;font-size:20px}.stat span{font-size:11px;color:var(--muted)}
.phase-h{font-size:13px;color:var(--muted);margin:16px 4px 6px;font-weight:600}
.wrow{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:6px}
.wrow.current{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.wrow.race{background:var(--race)}
.wrow .wn{font-weight:700;width:38px}
.wrow .wd{flex:1;font-size:13px;min-width:0}
.wrow .wd div:last-child{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar{width:54px;height:6px;border-radius:3px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--done)}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px}
.card h2{margin:0 0 6px;font-size:16px}
.brow{display:flex;justify-content:space-between;gap:8px;padding:10px 4px;border-bottom:1px solid var(--line);font-size:14px}
.brow button{border:0;background:none;color:var(--muted)}

.tabs{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--card);border-top:1px solid var(--line);padding-bottom:var(--safe-b);z-index:10}
.tabs button{flex:1;border:0;background:none;padding:8px 0 6px;font-size:11px;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:2px}
.tabs button span{font-size:20px;filter:grayscale(1);opacity:.6}
.tabs button.on{color:var(--ink);font-weight:600}.tabs button.on span{filter:none;opacity:1}
.toast{position:fixed;left:50%;bottom:calc(90px + var(--safe-b));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:8px 16px;border-radius:999px;font-size:14px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:20}
.toast.show{opacity:.92}

.pace h3{font-size:14px;margin:12px 0 4px}
.pace table{width:100%;border-collapse:collapse;font-size:14px}
.pace td{padding:6px 2px;border-bottom:1px solid var(--line)}
.pace td:last-child{text-align:right;font-weight:600;white-space:nowrap}

.starget{margin-top:5px;display:flex;flex-direction:column;gap:3px}
.starget div{font-size:13px;line-height:1.4;background:var(--bg);border-radius:8px;padding:4px 8px;color:var(--ink)}
.session.done .starget div{opacity:.6}