:root{
  --bg:#0f172a; --panel:#1e293b; --panel2:#334155;
  --text:#e2e8f0; --muted:#94a3b8; --accent:#38bdf8;
  --ok:#22c55e; --warn:#f59e0b; --err:#ef4444;
  --card:#0b1220; --border:#334155;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Hiragino Sans","Meiryo",sans-serif;
  background:linear-gradient(180deg,#0b1220 0%,#0f172a 100%);color:var(--text);
  -webkit-font-smoothing:antialiased;line-height:1.5;
}
.wrap{max-width:720px;margin:0 auto;padding:1.5rem 1rem 4rem}
h1{font-size:1.4rem;margin:0 0 .25rem;display:flex;align-items:center;gap:.5rem}
h2{font-size:1.1rem;margin:1.5rem 0 .75rem;color:var(--muted);font-weight:600}
.sub{color:var(--muted);font-size:.85rem;margin:0 0 1.5rem}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:.75rem;padding:1rem}
.btn{
  display:inline-block;background:var(--accent);color:#042437;border:0;border-radius:.5rem;
  padding:.7rem 1.2rem;font-weight:700;cursor:pointer;font-size:.95rem;
}
.btn:hover{filter:brightness(1.08)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn.danger{background:var(--err);color:#fff}
.btn.small{padding:.35rem .7rem;font-size:.8rem;font-weight:600}
input[type=text],input[type=password]{
  width:100%;background:var(--panel2);border:1px solid var(--border);color:var(--text);
  padding:.55rem .75rem;border-radius:.4rem;font-size:.95rem;
}
input:focus{outline:2px solid var(--accent);border-color:var(--accent)}
label{display:block;margin:.4rem 0 .2rem;font-size:.85rem;color:var(--muted)}
.msg{padding:.7rem .9rem;border-radius:.5rem;margin:.75rem 0;font-size:.9rem}
.msg.err{background:rgba(239,68,68,.15);border:1px solid var(--err);color:#fecaca}
.msg.ok{background:rgba(34,197,94,.15);border:1px solid var(--ok);color:#bbf7d0}
.msg.info{background:rgba(56,189,248,.1);border:1px solid var(--accent);color:#bae6fd}
.cards{display:grid;gap:.75rem;margin-top:.75rem}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:.75rem;padding:1rem;
  cursor:pointer;transition:transform .08s;position:relative;overflow:hidden;
}
.card:active{transform:scale(.98)}
.card .label{font-size:.8rem;color:var(--muted);margin-bottom:.3rem}
.card .code{font-family:"SF Mono",Menlo,Consolas,monospace;font-size:2rem;font-weight:700;letter-spacing:.2rem}
.card .bar{
  height:4px;background:var(--panel2);border-radius:2px;margin-top:.75rem;overflow:hidden;
}
.card .bar>span{display:block;height:100%;background:var(--accent);transition:width 1s linear}
.card .bar.warn>span{background:var(--warn)}
.card.copied::after{
  content:"コピー済";position:absolute;top:.5rem;right:.6rem;color:var(--ok);font-size:.8rem;font-weight:700;
}
.row{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex-wrap:wrap}
.meta{font-size:.8rem;color:var(--muted)}
hr{border:0;border-top:1px solid var(--border);margin:1rem 0}
.tag{
  display:inline-block;background:var(--panel2);color:var(--text);font-size:.75rem;
  padding:.15rem .5rem;border-radius:1rem;margin:.15rem .2rem .15rem 0;
}
.tag.off{opacity:.4}
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:.3rem .6rem;margin:.3rem 0 .8rem}
.checklist label{display:flex;align-items:center;gap:.4rem;color:var(--text);margin:0;font-size:.9rem}
.muted{color:var(--muted);font-size:.85rem}
.modal-bg{
  position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;padding:1rem;z-index:10;
}
.modal-bg.show{display:flex}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:.75rem;padding:1.25rem;max-width:460px;width:100%}
.spacer{height:.5rem}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:.5rem;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:.8rem}
.nav-right{float:right}
.link{color:var(--accent);text-decoration:none}
.link:hover{text-decoration:underline}