:root{
  --bg:#f3f7f7; --card:#ffffff; --ink:#132a2c; --sub:#5a7073; --line:#d6e2e3;
  --main:#0f5257; --main2:#16767d; --soft:#e2f0f0; --warn:#b3261e; --ok:#1e7a3c; --barbg:#dbe7e8;
  font-size:18px;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#0d1617; --card:#162224; --ink:#e7f1f1; --sub:#9db3b5; --line:#2a3b3d;
    --main:#5fc3c9; --main2:#7fd6db; --soft:#1d3335; --warn:#ff8a80; --ok:#7ed69a; --barbg:#26393b; }
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI",system-ui,sans-serif;
  -webkit-text-size-adjust:100%}
body{padding-bottom:calc(90px + env(safe-area-inset-bottom))}
.hidden{display:none!important}
.top{display:flex;align-items:center;gap:10px;padding:calc(12px + env(safe-area-inset-top)) 16px 12px;
  background:var(--main);color:#fff}
@media (prefers-color-scheme: dark){.top{background:#0f3f43}}
.glyph{width:38px;height:38px;border-radius:10px;background:#fff;color:#0f5257;display:grid;place-items:center;font-weight:800;font-size:22px}
.ttl{font-weight:800;font-size:1.15rem;flex:1}
.lock{font-size:.72rem;opacity:.9}
main{max-width:640px;margin:0 auto;padding:16px}
h2{font-size:1.25rem;margin:8px 0 14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;margin-bottom:14px}
label{display:block;font-weight:700;margin:12px 0 6px}
input[type=text],input[type=password]{width:100%;font-size:1.05rem;padding:14px;border-radius:12px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink)}
input:focus{outline:3px solid var(--main2);outline-offset:1px}
.btn{display:block;width:100%;min-height:56px;font-size:1.08rem;font-weight:800;border:0;border-radius:14px;
  background:var(--main);color:#fff;margin-top:14px;cursor:pointer;padding:12px}
@media (prefers-color-scheme: dark){.btn{color:#062224}}
.btn.sub{background:var(--soft);color:var(--main)}
.btn.danger{background:transparent;color:var(--warn);border:1.5px solid var(--warn)}
.btn:disabled{opacity:.45}
.btn.big{min-height:84px;font-size:1.2rem}
.row{display:flex;gap:10px}.row .btn{flex:1}
.note{color:var(--sub);font-size:.95rem;line-height:1.6}
.hint{background:var(--soft);border-radius:12px;padding:12px 14px;font-size:.95rem;line-height:1.65;margin-top:12px}
.hint b{color:var(--main)}
.err{color:var(--warn);font-weight:700;margin-top:10px;min-height:1em}
.who{display:flex;align-items:center;gap:12px;padding:12px 4px;border-bottom:1px solid var(--line);font-size:1.05rem}
.who:last-child{border-bottom:0}
.who input{width:26px;height:26px;accent-color:var(--main)}
.item{padding:12px 0;border-bottom:1px solid var(--line)}
.item:last-child{border-bottom:0}
.fname{font-weight:800;word-break:break-all}
.meta{color:var(--sub);font-size:.92rem;margin-top:4px}
.bar{height:12px;background:var(--barbg);border-radius:8px;overflow:hidden;margin-top:8px}
.bar>i{display:block;height:100%;width:0;background:var(--main2);transition:width .2s}
.state{font-size:.95rem;margin-top:6px;color:var(--sub)}
.state.ok{color:var(--ok);font-weight:700}.state.ng{color:var(--warn);font-weight:700}
video,audio{width:100%;margin-top:10px;border-radius:10px;background:#000}
.code{font-family:ui-monospace,Menlo,monospace;font-size:.8rem;word-break:break-all;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px;margin-top:8px}
.tabs{position:fixed;left:0;right:0;bottom:0;display:flex;background:var(--card);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom)}
.tabs button{flex:1;min-height:70px;border:0;background:transparent;color:var(--sub);font-size:.95rem;font-weight:700;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.tabs .ic{font-size:1.4rem}
.tabs button.on{color:var(--main)}
.toast{position:fixed;left:16px;right:16px;bottom:calc(90px + env(safe-area-inset-bottom));background:#132a2c;color:#fff;padding:14px 16px;border-radius:12px;font-weight:700;text-align:center;z-index:9}
.empty{text-align:center;color:var(--sub);padding:30px 10px}
.pill{display:inline-block;font-size:.75rem;padding:2px 8px;border-radius:99px;background:var(--soft);color:var(--main);font-weight:700;margin-left:6px}
.pickbtn{display:grid;place-items:center;margin:0}
label.lt{margin-top:0}
.who.sb{justify-content:space-between}
.btn.mini{width:auto;min-height:44px;margin:0;padding:6px 14px}
.warn{color:var(--warn);font-weight:700;font-size:.9rem;margin-top:6px}
.who.warn{display:block}
.rowx{display:flex;align-items:flex-start;gap:10px}.rowx .fname{flex:1}
.x{min-width:44px;min-height:44px;border:0;border-radius:10px;background:var(--soft);color:var(--sub);font-size:1.1rem}
.who.col{display:block}
.sb{display:flex;justify-content:space-between;align-items:center;gap:10px}
.fp{font-family:ui-monospace,Menlo,monospace;letter-spacing:.06em;color:var(--ink)}
/* iPhoneの「文字サイズ」設定に合わせる */
@supports (font: -apple-system-body){ html{font:-apple-system-body} body{font-size:1.05rem} }
.fp{white-space:nowrap}