* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f7f7fb;
  color: #1f2430;
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background: #ffffff;
  border-bottom: 1px solid #e5e5ef;
}
.navbar .brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: #4b3fd6;
  text-decoration: none;
}
.nav-links a {
  margin-left: 20px;
  text-decoration: none;
  color: #444;
  font-size: 0.95rem;
}
.nav-links a:hover { color: #4b3fd6; }
.container {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 24px;
}
.hero {
  text-align: center;
  padding: 80px 20px;
}
.hero h1 { font-size: 2.2rem; margin-bottom: 8px; }
.hero p { color: #666; margin-bottom: 28px; }
.cta-row { display: flex; gap: 12px; justify-content: center; }
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
}
.btn-primary { background: #4b3fd6; color: #fff; }
.btn-secondary { background: #eceaff; color: #4b3fd6; }
.form-card {
  background: #fff;
  padding: 32px;
  border-radius: 12px;
  max-width: 420px;
  margin: 0 auto;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.form-card h2 { margin-top: 0; }
.form-card label { display: block; margin: 14px 0 6px; font-size: 0.9rem; color: #555; }
.form-card input, .form-card textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 0.95rem;
}
.form-card button { margin-top: 20px; width: 100%; }
.error { color: #d6394b; font-size: 0.9rem; }
.muted { color: #888; font-size: 0.9rem; }
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.search-bar { display: flex; gap: 8px; margin-bottom: 24px; }
.search-bar input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
}
.note-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.note-card {
  background: #fff;
  padding: 18px;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.note-card h3 { margin: 0 0 8px; font-size: 1.05rem; color: #1f2430; }
.note-card p { margin: 0; font-size: 0.9rem; color: #666; }
.note-view {
  background: #fff;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.note-body { margin: 16px 0 24px; line-height: 1.6; }
footer {
  text-align: center;
  padding: 24px;
  color: #999;
  font-size: 0.85rem;
}