:root {
  --accent: #0c447c;
  --accent-light: #e6f1fb;
  --bg: #f4f5f3;
  --card-bg: #ffffff;
  --text: #1c1c1a;
  --text-soft: #5f5e5a;
  --border: #d3d1c7;
  --warn-bg: #faeeda;
  --warn-text: #633806;
  --green-bg: #eaf3de;
  --green-text: #27500a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
}
.topbar h1 { font-size: 17px; font-weight: 500; margin: 0; }
.icon-btn {
  border: none;
  background: none;
  font-size: 20px;
  padding: 4px 8px;
  color: var(--accent);
}
#app { padding: 16px; max-width: 480px; margin: 0 auto; }

.set-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.set-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: left;
}
.set-card .letter {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-light); color: var(--accent);
  font-weight: 500; margin-bottom: 8px;
}
.set-card .name { font-weight: 500; font-size: 15px; }
.set-card .count { color: var(--text-soft); font-size: 13px; margin-top: 2px; }

.deck-controls {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px; font-size: 13px; color: var(--text-soft);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.card-header {
  background: var(--accent-light);
  color: var(--accent);
  padding: 10px 16px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; font-weight: 500;
}
.corner-badge {
  background: var(--card-bg);
  border: 1.5px solid var(--accent);
  color: var(--accent);
  border-radius: 50%;
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 500;
}
.card-image {
  height: 120px;
  margin: 16px;
  border-radius: 10px;
  background: var(--accent-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
}
.card-title { text-align: center; font-weight: 500; font-size: 17px; margin: 4px 0 12px; }
.value-row {
  display: flex; justify-content: space-between;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.value-row .label { color: var(--text-soft); }
.value-row .value { font-weight: 500; }
.value-row.selectable { cursor: pointer; }
.value-row.selected { background: var(--accent-light); }
.fun-fact {
  margin: 12px 16px 16px;
  background: var(--warn-bg);
  color: var(--warn-text);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12.5px;
  text-align: center;
}
.nav-row {
  display: flex; gap: 12px; margin-top: 16px;
}
.nav-row button {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  font-size: 14px;
}
.compare-btn {
  display: block; width: 100%; margin-top: 16px; padding: 12px;
  border-radius: 8px; border: none; background: var(--accent); color: #fff;
  font-size: 15px; font-weight: 500;
}
.result-banner {
  margin-top: 16px; padding: 12px; border-radius: 8px; text-align: center;
  font-weight: 500; font-size: 14px;
}
.result-win { background: var(--green-bg); color: var(--green-text); }
.result-lose { background: #fcebeb; color: #791f1f; }