body {
  margin: 0;
  font-family: system-ui, sans-serif;
  color: #111;
  background: #f6f7f9;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: #111827;
  color: #fff;
  padding: 1.5rem 1rem;
}

.brand {
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.sidebar nav a {
  display: block;
  color: #d1d5db;
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.25rem;
}

.sidebar nav a.active,
.sidebar nav a:hover {
  background: #374151;
  color: #fff;
}

.sidebar nav a.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.content {
  flex: 1;
  padding: 2rem;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font: inherit;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
}

.btn-secondary {
  background: #e5e7eb;
  color: #111;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #e5e7eb;
  text-align: left;
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.alert-success {
  background: #ecfdf5;
  color: #065f46;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
}

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

.form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.form input,
.form textarea {
  width: 100%;
  max-width: 640px;
  padding: 0.5rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font: inherit;
}

.actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.link-button {
  background: none;
  border: none;
  color: #dc2626;
  cursor: pointer;
  padding: 0;
  font: inherit;
  text-decoration: underline;
}

.empty,
.meta {
  color: #6b7280;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.login-card h1 {
  margin: 0 0 0.5rem;
}

.muted {
  color: #6b7280;
  margin-bottom: 1.5rem;
}

.form-stack label {
  display: block;
  margin-bottom: 1rem;
  font-weight: 600;
}

.form-stack input {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.5rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font: inherit;
}

.sidebar-user {
  color: #9ca3af;
  font-size: 0.875rem;
  margin: -0.75rem 0 1rem 0.75rem;
}

.logout-form {
  margin-top: 2rem;
}

.btn-block {
  width: 100%;
}