:root {
  --bg: #f4f6f3;
  --ink: #1c241c;
  --muted: #5c6b5c;
  --ok: #2f6b3a;
  --warn: #9a6b12;
  --bad: #8b2e2e;
  --card: #ffffff;
  --line: #d7ddd6;
  --accent: #3d5c45;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(1200px 500px at 10% -10%, #e7efe6, transparent),
    var(--bg);
  color: var(--ink);
}
.wrap { max-width: 820px; margin: 0 auto; padding: 28px 18px 80px; }
.brand {
  font-size: 14px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 8px;
}
h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 8px; line-height: 1.1; }
h2 { font-size: 1.1rem; margin: 28px 0 12px; }
.hint { color: var(--muted); margin: 0; font-size: 0.95rem; }
.money {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px;
}
.money > div, .cards .card, #trades .row {
  background: var(--card); border: 1px solid var(--line); padding: 14px 16px;
}
.label { display: block; color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.money strong { font-size: 1.6rem; }
.why {
  border: 0; background: transparent; color: var(--accent);
  text-decoration: underline; cursor: help; padding: 0; margin-left: 8px;
}
.cards { display: grid; gap: 10px; }
.row { margin-bottom: 8px; font-size: 0.95rem; }
.controls input {
  width: 100%; padding: 12px; border: 1px solid var(--line); margin-bottom: 10px;
}
.btns { display: flex; flex-wrap: wrap; gap: 8px; }
button {
  border: 1px solid var(--line); background: #fff; padding: 10px 14px; cursor: pointer;
}
button.danger { background: var(--bad); color: #fff; border-color: var(--bad); }
.state-ok { color: var(--ok); }
.state-warn { color: var(--warn); }
.state-bad { color: var(--bad); }
@media (max-width: 600px) { .money { grid-template-columns: 1fr; } }