:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e2e4e9;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem 1rem;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

.page {
  max-width: 720px;
  margin: 0 auto;
}

h1 {
  font-size: 1.4rem;
  margin: 0 0 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

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

.topbar a:hover {
  text-decoration: underline;
}

.topbar form {
  display: inline;
}

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

label.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
}

input[type="text"],
input[type="password"] {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.15);
}

input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
}

button,
.button {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

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

button.secondary,
.button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

button.secondary:hover,
.button.secondary:hover {
  background: var(--bg);
}

.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  border-radius: var(--radius);
  padding: 0.65rem 0.85rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.actions {
  margin-bottom: 1rem;
}

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

th, td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

tr:last-child td {
  border-bottom: none;
}

.status-active {
  color: var(--success);
  font-weight: 600;
}

.status-inactive {
  color: var(--muted);
}

.row-actions a {
  color: var(--primary);
  text-decoration: none;
  margin-right: 0.75rem;
}

.row-actions a:hover {
  text-decoration: underline;
}

.row-actions form {
  display: inline;
}

.row-actions button {
  background: transparent;
  color: var(--danger);
  border: none;
  padding: 0;
  font-size: 0.9rem;
  font-weight: 400;
  cursor: pointer;
}

.row-actions button:hover {
  text-decoration: underline;
  background: transparent;
}

.empty {
  color: var(--muted);
  font-size: 0.9rem;
}

.back-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}