:root {
  --bg: #0e1116;
  --card: #171b22;
  --line: #2a3140;
  --text: #f3f5f8;
  --muted: #9aa3b2;
  --accent: #f5c518;
  --ok: #3dcc7a;
  --danger: #ff5c6a;
  --info: #4ea1ff;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}
body { padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom); }
#app { max-width: 480px; margin: 0 auto; min-height: 100vh; }
.top {
  padding: 18px 18px 8px;
  position: sticky;
  top: 0;
  background: linear-gradient(180deg, #0e1116 70%, transparent);
  z-index: 5;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-size: 15px;
}
.sub { color: var(--muted); font-size: 13px; margin-top: 4px; }
#screen { padding: 8px 16px 28px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin: 10px 0;
  white-space: pre-wrap;
  line-height: 1.45;
}
.card.flash { border-color: #5a4a12; }
h1 { font-size: 22px; margin: 8px 0 12px; }
p.hint { color: var(--muted); line-height: 1.45; }
label { display: block; color: var(--muted); font-size: 13px; margin: 10px 0 6px; }
input {
  width: 100%;
  background: #10141b;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 12px;
  padding: 14px 14px;
  font-size: 17px;
}
.grid { display: grid; gap: 10px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.bal-row {
  display: grid;
  grid-template-columns: 1fr 92px;
  gap: 8px;
  align-items: stretch;
}
.bal-row button {
  font-size: 22px;
  padding: 10px 8px;
}
button, .btn {
  appearance: none;
  border: 0;
  border-radius: 14px;
  padding: 15px 14px;
  font-size: 15px;
  font-weight: 650;
  background: #232833;
  color: var(--text);
  width: 100%;
  text-align: center;
  cursor: pointer;
}
button.primary { background: var(--accent); color: #1a1400; }
button.danger { background: #3a1b22; color: #ffd0d5; }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--muted); }
button.on { outline: 2px solid var(--accent); }
button:disabled { opacity: 0.55; }
.badge {
  display: inline-block;
  background: #2a2410;
  color: var(--accent);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 12px;
  margin-left: 6px;
}
.inbox {
  background: #1b2430;
  border-left: 3px solid var(--info);
}
.wait { color: var(--muted); text-align: center; padding: 20px 0; }
.err { color: var(--danger); white-space: pre-wrap; }