:root {
  --bg:#0e0e11;
  --card:#17171f;
  --text:#fff;
  --accent:#00ffa2;
  --muted:#888;
}

.light {
  --bg:#f3f3f3;
  --card:#ffffff;
  --text:#000;
  --accent:#00a86b;
  --muted:#666;
}

body {
  margin:0;
  font-family: "Segoe UI", sans-serif;
  background:var(--bg);
  color:var(--text);
}

.container {
  max-width:900px;
  margin:auto;
  padding:20px;
}

header, nav {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:10px;
}

nav a {
  color:var(--text);
  text-decoration:none;
  margin-right:10px;
}

nav a:hover { text-decoration:underline; }

.card {
  background:var(--card);
  padding:20px;
  border-radius:16px;
  margin-bottom:15px;
  box-shadow:0 0 20px rgba(0,0,0,.2);
}

.stats {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:12px;
}

.stat { text-align:center; }

.stat h2 { margin:5px 0; }

button {
  background:var(--accent);
  border:none;
  padding:12px;
  border-radius:10px;
  font-weight:600;
  cursor:pointer;
  width:100%;
  margin-top:5px;
}

button:hover { opacity:.9; }

.shop-item {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-top:10px;
  padding:10px;
  border-radius:10px;
  background:rgba(255,255,255,0.05);
}

.progress {
  background:#222;
  border-radius:10px;
  overflow:hidden;
  height:12px;
  margin-top:5px;
}

.bar {
  height:100%;
  width:0%;
  background:var(--accent);
}

.small {
  font-size:12px;
  color:var(--muted);
}

footer {
  text-align:center;
  font-size:12px;
  opacity:.6;
  margin-top:30px;
}