:root {
  --bg: #0f1117;
  --card: #1a1d27;
  --card2: #232735;
  --accent: #a78bfa;
  --accent2: #4ade80;
  --text: #e7e9ee;
  --muted: #8b90a0;
  --border: #2c3142;
  --danger: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  text-align: center;
  padding: 2rem 1rem 1.5rem;
  background: linear-gradient(180deg, #161922, var(--bg));
  border-bottom: 1px solid var(--border);
}

header h1 { margin: 0; font-size: 2rem; }
header h1 .sub { font-size: 1rem; color: var(--muted); font-weight: normal; }
.tagline { color: var(--muted); margin: .3rem 0 1rem; }

#wallet-bar {
  display: flex; gap: .75rem; justify-content: center; align-items: center; flex-wrap: wrap;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
}

.card h2 { margin-top: 0; font-size: 1.15rem; }
.card h3 { font-size: 1rem; color: var(--muted); margin-bottom: .4rem; }

.row {
  display: flex;
  gap: .75rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

label { display: flex; flex-direction: column; font-size: .85rem; color: var(--muted); gap: .25rem; }

input {
  background: var(--card2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .55rem .7rem;
  border-radius: 8px;
  font-size: .95rem;
  min-width: 160px;
}

button {
  background: var(--accent);
  color: #1a0535;
  border: none;
  padding: .6rem 1.1rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: .9rem;
  cursor: pointer;
  transition: filter .12s, opacity .12s;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: .4; cursor: not-allowed; }
button.secondary { background: var(--card2); color: var(--text); border: 1px solid var(--border); }

.hint { color: var(--muted); font-size: .82rem; margin: .6rem 0 0; }
.muted { color: var(--muted); }
code { background: var(--card2); padding: .1rem .35rem; border-radius: 4px; font-size: .85em; }

.badge {
  background: var(--card2); border: 1px solid var(--border);
  padding: .2rem .6rem; border-radius: 20px; font-size: .8rem; color: var(--accent2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .6rem;
  margin: 1rem 0;
}
.stat {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .6rem .8rem;
  display: flex; flex-direction: column;
}
.stat .k { font-size: .75rem; color: var(--muted); }
.stat .v { font-size: 1rem; font-weight: 600; word-break: break-all; }
.stat.highlight { border-color: var(--accent); }
.stat.highlight .v { color: var(--accent); }

.next-action {
  background: rgba(167, 139, 250, .12);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: .65rem .8rem;
  margin: 1rem 0;
}
.next-action .k {
  display: block;
  color: var(--muted);
  font-size: .75rem;
}
.next-action strong {
  display: block;
  color: var(--text);
  font-size: .95rem;
}

#memberList { padding-left: 1.4rem; }
#memberList li { word-break: break-all; padding: .15rem 0; }
#memberList li.me { color: var(--accent2); font-weight: 700; }
#memberList li.recipient::after { content: " 🎯 今回の受領者"; color: var(--accent); font-size: .8rem; }

#log {
  background: #0b0d13;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .8rem;
  font-family: ui-monospace, monospace;
  font-size: .8rem;
  max-height: 260px;
  overflow-y: auto;
  white-space: pre-wrap;
}
#log .entry { padding: .15rem 0; border-bottom: 1px solid #14171f; }
#log .ok { color: var(--accent2); }
#log .err { color: var(--danger); }
#log .ev { color: var(--accent); }

.hidden { display: none; }

footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 1.5rem; }