:root {
  --bg: #f4f5f7;
  --card: #fff;
  --text: #1f2933;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #1d4ed8;
  --accent-hover: #1e40af;
  --ok: #16a34a;
  --off: #c4c9d0;
  --danger: #b91c1c;
  --warn-bg: #fff7e0;
  --warn-line: #f0c36d;
  color-scheme: light;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono, pre { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 13px; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 28px 0 6px; }
h3 { font-size: 14px; margin: 16px 0 4px; }
h1 small, h2 small { color: var(--muted); font-weight: 400; font-size: .75em; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 10px 24px; background: #111827; color: #fff; }
.topbar .brand { color: #fff; font-weight: 700; font-size: 16px; }
.topbar .brand span { font-weight: 400; color: #9ca3af; }
.topbar nav { display: flex; align-items: center; gap: 18px; }
.topbar nav a, .topbar nav .link { color: #d1d5db; }
.topbar nav form { margin: 0; }
button.link { background: none; border: 0; padding: 0; font: inherit; cursor: pointer; }

main { max-width: 1280px; margin: 0 auto; padding: 20px 24px 48px; }
.head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.hint { color: var(--muted); margin: 4px 0 10px; }

.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; background: #e8f0fe; border: 1px solid #c3d4f7; }
.alert-success { background: #e9f7ee; border-color: #b6e2c4; }
.alert-warning { background: var(--warn-bg); border-color: var(--warn-line); }
.alert-error { background: #fdecec; border-color: #f2b8b8; }

button, .button { display: inline-block; padding: 7px 14px; border-radius: 6px; border: 1px solid var(--accent);
  background: var(--accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
button:hover, .button:hover { background: var(--accent-hover); text-decoration: none; }
.button.small, form.inline button { padding: 4px 10px; font-size: 13px; }
button.danger { background: var(--danger); border-color: var(--danger); }
a.danger { color: var(--danger); margin-left: auto; }

input, select, textarea { font: inherit; padding: 6px 9px; border: 1px solid #cfd4da; border-radius: 6px; background: #fff; color: var(--text); }
input:focus, select:focus, textarea:focus { outline: 2px solid #bfd0f8; border-color: var(--accent); }

.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.filters input[type=search] { flex: 1 1 260px; }
.refreshed { margin-left: auto; color: var(--muted); font-size: 13px; }
.refreshed.bad { color: var(--danger); }

table.devices { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.devices th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .03em;
  background: #fafbfc; }
.devices th, .devices td { padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.devices tbody tr:last-child td { border-bottom: 0; }
.devices tbody tr:hover { background: #f8fafc; }
.devices td.notes { color: var(--muted); max-width: 320px; font-size: 13px; }
.devices td.seen { white-space: nowrap; font-size: 13px; }
.devices td.empty { text-align: center; color: var(--muted); padding: 28px; }
.devices th:first-child, .devices td:first-child { width: 22px; padding-right: 0; }

.dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%; background: var(--off); }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px #dcfce7; }

form.inline { display: flex; gap: 6px; flex-wrap: wrap; margin: 0; }
form.inline input, form.inline select { padding: 4px 8px; font-size: 13px; }
form.inline input[name=name] { width: 170px; }
form.inline input[name=location] { width: 150px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; margin-bottom: 16px; }
.card h2 { margin-top: 0; }
.form { max-width: 560px; }
.form label { display: block; margin-bottom: 12px; }
.form label span { display: block; font-weight: 600; font-size: 13px; margin-bottom: 3px; }
.form input, .form select, .form textarea { width: 100%; }
.form .actions { display: flex; align-items: center; gap: 14px; margin-top: 16px; }
em.error, .errorlist { color: var(--danger); font-style: normal; font-size: 13px; }

.columns { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 16px; }
.columns .card { margin-bottom: 0; }
.qr { width: 260px; max-width: 100%; margin: 8px 0; }
.qr svg { width: 100%; height: auto; display: block; }
pre.copy { background: #f6f8fa; border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; white-space: pre-wrap;
  word-break: break-all; cursor: copy; margin: 6px 0 10px; }
pre.copy.copied { border-color: var(--ok); background: #effaf3; }
ol { padding-left: 20px; }

/* Strony allauth (logowanie, kod Authenticator) */
main.auth { max-width: 520px; }
main.auth form p { margin: 0 0 10px; }
main.auth form label { font-weight: 600; font-size: 13px; }
main.auth form input:not([type=hidden]):not([type=checkbox]) { width: 100%; }

@media (max-width: 760px) {
  main { padding: 14px; }
  .devices th:nth-child(6), .devices td:nth-child(6) { display: none; }
  .columns { grid-template-columns: 1fr; }
}