:root {
  --bg: #f4f2ec;
  --ink: #23211c;
  --mute: #6f6b62;
  --line: rgba(0, 0, 0, 0.08);
  --card: rgba(255, 255, 255, 0.8);
  --ground: #e2ddcf;
  --fill: #7a8f6a;
  --accent: #2f55d4;
  --good: #3f6b2f;
  --err: #b3261e;
  --ring: #8aabf5;                      /* ATOMO の輪。ATOMO feed と同じ色 */
  --ring-glow: rgba(138, 171, 245, 0.35);
  --field: rgba(255, 255, 255, 0.7);
  --glass-strong: rgba(255, 255, 255, 0.75);
  --glass-edge: rgba(0, 0, 0, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17161a;
    --ink: #ecebe6;
    --mute: #a29e95;
    --line: rgba(255, 255, 255, 0.1);
    --card: rgba(255, 255, 255, 0.05);
    --ground: #2c2a30;
    --fill: #8fa77c;
    --accent: #8ea2ff;
    --good: #a9cf94;
    --err: #ff8a80;
    --ring: #7f9ff0;
    --ring-glow: rgba(127, 159, 240, 0.3);
    --field: rgba(0, 0, 0, 0.25);
    --glass-strong: rgba(255, 255, 255, 0.08);
    --glass-edge: rgba(255, 255, 255, 0.12);
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; } /* display: flex の物も hidden で隠れるように */
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
}
main { max-width: 480px; margin: 0 auto; padding: 20px 16px 64px; }
p { margin: 0; }
small { font-size: 14px; color: var(--mute); margin-left: 6px; font-weight: 400; }
.small { font-size: 13px; color: var(--mute); }
.label { font-size: 13px; color: var(--mute); }

/* いちばん上の帯。名前と、ログインしていれば自分とログアウト */
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 40px; margin-bottom: 20px; }
.mark { font-weight: 700; letter-spacing: 0.1em; }
.me { display: flex; align-items: center; gap: 12px; color: var(--mute); font-size: 14px; min-width: 0; }
.quiet { font: inherit; font-size: 13px; color: var(--mute); background: none; border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; cursor: pointer; flex: none; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px; }
.err { color: var(--err); margin-bottom: 16px; }
.intro { font-size: 17px; margin-bottom: 16px; }

/* ATOMO でログイン。形は ATOMO feed の画面と同じだ（atomo/README.ja.md の印） */
.login .head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.ring {
  width: 72px; height: 72px; border-radius: 50%; flex: none;
  border: 4px solid var(--ring); box-shadow: 0 0 18px var(--ring-glow);
  background: var(--glass-strong) center / cover no-repeat;
}
.ring.busy { animation: ringbreath 1.6s ease-in-out infinite; }
@keyframes ringbreath { 50% { box-shadow: 0 0 30px var(--ring); } }
@media (prefers-reduced-motion: reduce) { .ring.busy { animation: none; } }
.login .head b { font-size: 22px; }
.login .handle {
  width: 100%; padding: 10px 14px; border-radius: 14px; border: 3px solid var(--ring);
  background: var(--field); color: inherit; outline: none; font: inherit; font-size: 18px; margin-bottom: 6px;
}
.login .row { display: flex; justify-content: flex-end; margin-top: 16px; }
.atomo-btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 8px 20px 8px 12px; border-radius: 999px;
  border: 1px solid var(--glass-edge); background: var(--glass-strong); color: var(--ink);
  font: inherit; font-weight: 700; font-size: 17px; cursor: pointer;
}
.atomo-btn::before { content: ""; width: 20px; height: 20px; border-radius: 50%; border: 2.5px solid var(--ring); }

/* 決まりの3行。数を左にそろえる */
.rules { margin: 24px 0 0; display: grid; gap: 10px; }
.rules div { display: grid; grid-template-columns: 56px 1fr; align-items: baseline; }
.rules dt { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.rules dd { margin: 0; color: var(--mute); }

/* 残高 */
.balance { font-size: 56px; line-height: 1.2; font-weight: 700; font-variant-numeric: tabular-nums; }
.status { margin-top: 4px; color: var(--mute); }
.status.good { color: var(--good); font-weight: 700; }
.status.warn { color: var(--err); }
.goal { margin: 20px 0; }
.meter { height: 8px; border-radius: 999px; background: var(--ground); overflow: hidden; margin-bottom: 8px; }
.meter div { height: 100%; width: 0; background: var(--fill); border-radius: 999px; transition: width 0.6s; }
@media (prefers-reduced-motion: reduce) { .meter div { transition: none; } }
.primary {
  display: block; text-align: center; padding: 12px 16px; border-radius: 999px;
  background: var(--accent); color: #fff; font-weight: 700; text-decoration: none;
}
.primary.secondary { background: none; color: var(--accent); border: 1.5px solid var(--accent); }
.how { margin: 20px 4px 8px; }
#detail { margin: 0 4px; }

/* 山。どちらの人にも下に小さく出す */
.mountain { display: grid; grid-template-columns: 96px 1fr; gap: 16px; align-items: start; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.mountain svg { width: 96px; display: block; margin-top: 6px; }
.ground { fill: var(--ground); }
.fill { fill: var(--fill); }
.height { font-size: 24px; font-variant-numeric: tabular-nums; margin-bottom: 6px; }
.height small { margin-left: 2px; }