:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --border: #d9d9d9;
  --accent: #2b6cb0;
  --ok: #1a7f37;
  --bad: #c0392b;
  --card-bg: #f7f7f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8e8e8;
    --muted: #9a9a9a;
    --border: #333;
    --accent: #6fa8dc;
    --ok: #4caf50;
    --bad: #e57373;
    --card-bg: #1e2126;
  }
}

* { box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.topnav .brand { font-weight: 700; margin-right: 0.5rem; }
.topnav a { color: var(--fg); text-decoration: none; }
.topnav a:hover { color: var(--accent); }
.logout-form { margin-left: auto; }

.content { max-width: 960px; margin: 0 auto; padding: 1.5rem; }

h1 { margin-top: 0; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}
.card-link { display: block; text-decoration: none; color: inherit; }
.card-link:hover { border-color: var(--accent); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.form { display: flex; flex-direction: column; gap: 0.4rem; max-width: 480px; }
.form-inline { flex-direction: row; align-items: center; max-width: none; }
/* .form's own display: flex otherwise beats the [hidden] attribute's
   display: none — same specificity, later in the cascade. */
.form[hidden] { display: none; }
.form label { font-size: 0.85rem; color: var(--muted); margin-top: 0.5rem; }
.form input, .form select {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
}
.form button {
  margin-top: 0.75rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
  width: fit-content;
}
.form button[type="button"] { background: transparent; color: var(--accent); }

.link-button {
  background: none; border: none; color: var(--fg);
  text-decoration: underline; cursor: pointer; padding: 0; font: inherit;
}

.table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.table th, .table td {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.status-ok, .flash-ok { color: var(--ok); }
.status-bad, .flash-error { color: var(--bad); }
.flash { padding: 0.6rem 0.9rem; border-radius: 4px; margin-bottom: 1rem; border: 1px solid currentColor; }
.flash-notice { color: var(--accent); }

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

.code-display {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 1rem;
  padding: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  word-break: break-all;
  user-select: all;
}