:root {
  --bg: #f5f6f8;
  --fg: #1c1e21;
  --muted: #6b7280;
  --card-bg: #ffffff;
  --border: #e2e5ea;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --badge-public: #16a34a;
  --badge-authenticated: #2563eb;
  --badge-groups: #9333ea;
  --badge-admin: #6b7280;
  --badge-hidden: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, "Hiragino Sans", "Yu Gothic", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

.topbar .brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.whoami {
  color: var(--muted);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.footer {
  text-align: center;
  color: var(--muted);
  padding: 2rem 1rem;
  font-size: 0.85rem;
}

h1 {
  margin-top: 0;
}

.admin-nav {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.card-hidden {
  border-color: var(--danger);
}

.card-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.card-note,
.card-meta {
  margin: 0.25rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.card-slug {
  font-family: monospace;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  color: #fff;
  background: var(--badge-admin);
}

.badge-public {
  background: var(--badge-public);
}

.badge-authenticated {
  background: var(--badge-authenticated);
}

.badge-groups {
  background: var(--badge-groups);
}

.badge-admin {
  background: var(--badge-admin);
}

.badge-hidden {
  background: var(--badge-hidden);
}

.badge-group {
  background: #374151;
}

.notice {
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  padding: 0.75rem 1rem;
  border-radius: 8px;
}

.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger-dark);
  padding: 0.6rem 1rem;
  border-radius: 8px;
}

.empty {
  color: var(--muted);
}

.form-narrow {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-width: 420px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}

.form-narrow label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}

.form-narrow input[type="text"],
.form-narrow input[type="password"] {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
}

.form-narrow fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
}

.group-check {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  margin-right: 0.5rem;
}

button,
.button-primary,
.button-small,
.button-danger {
  cursor: pointer;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  background: var(--primary);
  color: #fff;
}

button:hover,
.button-primary:hover {
  background: var(--primary-dark);
}

.button-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

.button-danger {
  background: var(--danger);
}

.button-danger:hover {
  background: var(--danger-dark);
}

.link-button {
  background: none;
  color: var(--primary);
  padding: 0;
  font-size: 1rem;
}

.link-button:hover {
  text-decoration: underline;
  background: none;
}

.inline-form {
  display: inline;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.stat-label {
  color: var(--muted);
  font-size: 0.85rem;
}

.table-scroll {
  overflow-x: auto;
  margin-bottom: 2rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.admin-table th,
.admin-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.88rem;
  vertical-align: middle;
}

.admin-table th {
  background: #f9fafb;
  font-weight: 600;
}

.admin-table input[type="text"],
.admin-table input[type="password"] {
  padding: 0.3rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 100%;
  min-width: 90px;
}

.token-box {
  background: #111827;
  color: #f3f4f6;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1rem;
}

.token-box code {
  font-size: 1rem;
}

@media (max-width: 640px) {
  .container {
    padding: 1rem 0.75rem 2rem;
  }

  .topbar {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
}