* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f5;
  color: #222;
}

a {
  color: #174ea6;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 24px;
  background: #1f2937;
  color: #fff;
}

.site-title {
  font-size: 18px;
  font-weight: 700;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-header a {
  color: #fff;
}

.inline-form {
  display: inline;
  margin: 0;
}

.inline-form button,
button {
  cursor: pointer;
  border: 1px solid #1f2937;
  background: #1f2937;
  color: #fff;
  padding: 8px 12px;
  border-radius: 4px;
}

.page {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 20px;
}

.panel {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 20px;
}

.muted {
  color: #666;
}

.messages {
  margin-bottom: 16px;
}

.message {
  padding: 10px 12px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.message-error {
  background: #fdecea;
  color: #7a1d16;
}

.message-success {
  background: #e7f5ea;
  color: #1c5d2e;
}

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 28px;
}

.login-card label {
  display: block;
  margin-bottom: 16px;
  font-weight: 600;
}

.login-card input {
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  border: 1px solid #bbb;
  border-radius: 4px;
}

.login-card button {
  width: 100%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.stat-card {
  display: block;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 20px;
  color: #222;
}

.stat-card:hover {
  text-decoration: none;
  border-color: #999;
}

.stat-number {
  display: block;
  font-size: 32px;
  font-weight: 700;
}

.stat-label {
  display: block;
  margin-top: 4px;
  color: #666;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

.data-table th {
  background: #f3f4f6;
}