:root {
  --bg: #ffffff;
  --text: #111111;
  --card: #f5f5f5;
  --border: #dddddd;
  --accent: #2563eb;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --text: #f8fafc;
  --card: #1e293b;
  --border: #334155;
  --accent: #60a5fa;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: all 0.3s ease;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px;
}

h1 {
  margin-bottom: 8px;
}

.subtitle {
  margin-bottom: 20px;
  opacity: 0.7;
}

.toggle {
  margin: 10px 0 20px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
}

th, td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: rgba(0,0,0,0.05);
}

tr:hover {
  background: rgba(0,0,0,0.03);
}

.note {
  margin-top: 16px;
  font-size: 14px;
  opacity: 0.8;
  line-height: 1.6;
}

.highlight {
  color: var(--accent);
  font-weight: bold;
}