:root {
  --bg: #0f172a;
  --card: #1e293b;
  --card2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --green: #22c55e;
  --red: #ef4444;
  --border: #334155;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
  padding-top: calc(14px + env(safe-area-inset-top));
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand img { border-radius: 6px; }
main { max-width: 640px; margin: 0 auto; padding: 18px; }
.view { display: block; }
.hidden { display: none !important; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 20px; margin-bottom: 18px;
}
.card-head { display: flex; justify-content: space-between; align-items: center; }
h1 { margin: 0 0 16px; color: var(--primary); }
h2 { margin: 0 0 12px; font-size: 1.1rem; }
label { display: block; margin-bottom: 14px; font-size: .9rem; color: var(--muted); }
input[type=email], input[type=password], input[type=text] {
  width: 100%; margin-top: 6px; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--card2); color: var(--text);
  font-size: 1rem;
}
.row { display: flex; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
button {
  cursor: pointer; border: none; border-radius: 10px; padding: 12px 18px;
  font-size: 1rem; font-weight: 600; transition: opacity .15s;
}
button:active { opacity: .7; }
button:disabled { opacity: .5; cursor: not-allowed; }
.primary { background: var(--primary); color: #041016; width: 100%; }
.secondary { background: var(--card2); color: var(--text); border: 1px solid var(--border); }
.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.ghost.small { padding: 6px 12px; }
.error { color: var(--red); margin: 10px 0 0; }
.msg { color: var(--green); margin: 12px 0 0; }
.status { color: var(--muted); }
.banner {
  background: linear-gradient(135deg, #1e3a5f, #1e293b); border: 1px solid var(--primary);
  border-radius: 16px; padding: 16px 20px; margin-bottom: 18px;
}
.banner ol { margin: 10px 0 0; padding-left: 20px; line-height: 1.7; }
.list { display: flex; flex-direction: column; gap: 10px; }
.item {
  background: var(--card2); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px;
}
.item .title { font-weight: 600; }
.item .sub { color: var(--muted); font-size: .85rem; margin-top: 4px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 600; }
.badge.on { background: rgba(34,197,94,.15); color: var(--green); }
.badge.off { background: rgba(148,163,184,.15); color: var(--muted); }
.pnl-pos { color: var(--green); font-weight: 700; }
.pnl-neg { color: var(--red); font-weight: 700; }
.empty { color: var(--muted); text-align: center; padding: 20px; }
.sep { border: none; border-top: 1px solid var(--border); margin: 18px 0; }
.sec-block { margin-top: 6px; }
.qr-wrap { text-align: center; margin: 12px 0; }
.qr-wrap img { border-radius: 12px; background: #fff; padding: 8px; width: 220px; height: 220px; }
.code-box {
  display: block; background: var(--card2); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 12px; font-family: monospace; word-break: break-all;
  color: var(--primary); font-size: .95rem;
}
.enroll-code {
  font-family: monospace; font-size: 2.4rem; letter-spacing: .3rem; font-weight: 700;
  text-align: center; color: var(--green); background: var(--card2);
  border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin: 14px 0 8px;
}