:root {
  --bg: #f4f6f8;
  --card: #fff;
  --text: #1a1d21;
  --muted: #5c6670;
  --accent: #2563eb;
  --danger: #dc2626;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

header p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

nav a {
  color: var(--accent);
  text-decoration: none;
  margin-right: 12px;
}

nav a:hover {
  text-decoration: underline;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

button {
  cursor: pointer;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 8px 14px;
  font-size: 0.9rem;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

button.btn-danger {
  background: #fff;
  border-color: #fecaca;
  color: var(--danger);
}

button.btn-danger:hover {
  background: #fef2f2;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
}

.status {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}