:root{
  --bg: #0b1020;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.08);
  --border: rgba(255,255,255,.10);

  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.65);

  --accent: #6aa6ff;
  --accent2: #9b7bff;

  --ok: #66d19e;
  --ng: #ff7c8a;

  --r: 18px;
  --shadow: 0 12px 30px rgba(0,0,0,.35);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(106,166,255,.22), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(155,123,255,.18), transparent 60%),
    radial-gradient(900px 600px at 50% 120%, rgba(255,255,255,.06), transparent 60%),
    var(--bg);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  letter-spacing: .01em;
}

a{ color:inherit; text-decoration:none; }

.wrap{ max-width: 980px; margin: 0 auto; padding: 16px; }

header{
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  background: rgba(11,16,32,.72);
  backdrop-filter: blur(14px);
}

.brand{
  font-weight: 900;
  letter-spacing: .03em;
}

.card{
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--border);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 16px;
}

.grid{ display:grid; gap:12px; }
.grid2{ display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:12px; }

.muted{ color: var(--muted); font-size: 14px; }
.h1{ font-size: 18px; font-weight: 900; }
.h2{ font-size: 16px; font-weight: 900; }

.pill{
  display:inline-flex;
  gap:6px;
  align-items:center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size: 12px;
}

.btn{
  appearance:none;
  border: 0;
  border-radius: 14px;
  padding: 10px 12px;
  font-weight: 850;
  cursor: pointer;
  transition: transform .12s ease, filter .12s ease, background .12s ease, border-color .12s ease;
  user-select: none;
}

.btn:active{ transform: translateY(1px) scale(.99); }

.btn.primary{
  background: linear-gradient(135deg, rgba(106,166,255,1), rgba(155,123,255,1));
  color: rgba(10,14,28,.95);
}

.btn.ghost{
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn:disabled{
  cursor: not-allowed;
  opacity: .55;
  filter: saturate(.6);
}

.choice{
  width: 100%;
  text-align: left;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
}

.choice:hover{ filter: brightness(1.06); }
.choice:active{ transform: translateY(1px); }

.feedback{
  margin-top: 10px;
  font-weight: 900;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
}

.feedback.ok{ border-color: rgba(102,209,158,.55); background: rgba(102,209,158,.10); }
.feedback.ng{ border-color: rgba(255,124,138,.55); background: rgba(255,124,138,.10); }

/* hub用の不足クラス補完 */
.row{ display:flex; gap:10px; align-items:center; justify-content:space-between; flex-wrap:wrap; }

.avatar{
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
}

select{
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
}

.progress{
  height: 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  overflow: hidden;
}

.bar{
  height: 100%;
  width: 0%;
  background: linear-gradient(135deg, rgba(106,166,255,1), rgba(155,123,255,1));
}

.link{ color: var(--muted); text-decoration: none; }
.link:hover{ color: var(--text); text-decoration: underline; }