:root {
  --primary: #4f46e5;
  --bg: #f8f8fb;
  --text: #1a1a2e;
  --border: #e2e2ea;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  background: white;
  border-bottom: 1px solid var(--border);
}
.site-header nav a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
main { max-width: 960px; margin: 0 auto; padding: 2rem; }
.hero { padding: 2rem 0; }
.hero h2 { font-size: 1.75rem; margin-bottom: 0.5rem; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  background: white;
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}
.form-grid label { display: flex; flex-direction: column; font-size: 0.85rem; gap: 0.35rem; }
.form-grid input {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.form-grid button {
  grid-column: 1 / -1;
  padding: 0.6rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
}
table { width: 100%; border-collapse: collapse; background: white; border-radius: 10px; overflow: hidden; }
th, td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.9rem; }
th { background: #f1f1f8; }
button.delete-btn { background: #ef4444; color: white; border: none; padding: 0.35rem 0.75rem; border-radius: 6px; cursor: pointer; }