:root {
  --bg: #0e1412;
  --card: #17201c;
  --line: rgba(255,255,255,0.08);
  --ink: #eef3ef;
  --muted: #9aafa3;
  --accent: #d4a84b;
  --ok: #5ecf8e;
  --bad: #e06b63;
  --font: "IBM Plex Sans KR", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(900px 400px at 10% -10%, #24352c, transparent 60%),
    linear-gradient(160deg, #0b100e, #121a16 50%, #0c110f);
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 28px 18px 48px; }
header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}
.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
h1 { margin: 0; font-size: 1.7rem; }
.sub { margin: 8px 0 0; color: var(--muted); line-height: 1.5; max-width: 52ch; }
.link {
  color: var(--accent);
  text-decoration: none;
  border: 1px solid rgba(212,168,75,0.35);
  padding: 10px 14px;
  border-radius: 10px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 14px;
}
.card h2 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 14px;
}
label { display: block; font-size: 0.9rem; color: var(--muted); }
input {
  margin-top: 6px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0f1613;
  color: var(--ink);
  font: inherit;
}
button {
  font: inherit;
  cursor: pointer;
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  background: linear-gradient(135deg, #e0b65a, #b8872e);
  color: #1a1408;
  font-weight: 700;
}
button.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  margin-top: 10px;
}
.modes, .override {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.modes button, .override button {
  background: #223028;
  color: var(--ink);
  border: 1px solid var(--line);
  font-weight: 600;
}
.modes button.active {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(212,168,75,0.35);
}
.rtp-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
}
.override span {
  width: 100%;
  color: var(--muted);
  font-size: 0.85rem;
}
.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.stat {
  background: #101816;
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
}
.stat b { display: block; font-size: 1.2rem; color: var(--accent); margin-top: 4px; }
.explain { margin: 0; padding-left: 18px; color: var(--ink); line-height: 1.55; }
.explain li { margin-bottom: 6px; }
.mono, .log {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.45;
  background: #0c1210;
  border-radius: 12px;
  padding: 12px;
  overflow: auto;
  max-height: 360px;
  border: 1px solid var(--line);
  white-space: pre-wrap;
}
.plan {
  margin: 0 0 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(212,168,75,0.1);
  border: 1px solid rgba(212,168,75,0.25);
  color: var(--accent);
  line-height: 1.45;
}
.log .item {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.log .item:last-child { border-bottom: 0; }
.tag-win { color: var(--ok); }
.tag-lose { color: var(--bad); }
.hint { color: var(--muted); font-size: 0.85rem; }
.hidden { display: none !important; }
.auth { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.auth label { flex: 1; min-width: 200px; }
@media (max-width: 800px) {
  .grid, .rtp-row { grid-template-columns: 1fr; }
  header { flex-direction: column; }
}