html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #1a1a1a;
  background: #fafafa;
}

.site-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #e2e2e2;
  background: #fff;
}

.brand {
  font-weight: 600;
  text-decoration: none;
  color: inherit;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.hero h1 {
  margin-bottom: 0.5rem;
}

.site-footer {
  padding: 1rem 1.5rem;
  color: #666;
  font-size: 0.85rem;
}

.site-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-left: auto;
}

.site-header .bar {
  display: flex;
  align-items: center;
  max-width: 40rem;
  margin: 0 auto;
}

.site-nav a,
.site-nav button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
}

form {
  max-width: 24rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.form-control {
  width: 100%;
  box-sizing: border-box;
  padding: 0.6rem 0.7rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 0.3rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  background: #1a1a1a;
  color: #fff;
  border: none;
  border-radius: 0.3rem;
  cursor: pointer;
}

.field-validation-error {
  display: block;
  color: #b3261e;
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.validation-summary {
  color: #b3261e;
  margin-bottom: 1rem;
}

.validation-summary ul {
  margin: 0;
  padding-left: 1.2rem;
}

.alert {
  padding: 0.8rem 1rem;
  border-radius: 0.3rem;
  margin-bottom: 1rem;
}

.alert-success {
  background: #e6f4ea;
  color: #1e4620;
}

.alert-error {
  background: #fce8e6;
  color: #7a1e14;
}