:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --text: #1c1f24;
  --muted: #687080;
  --border: #e2e5ea;
  --accent: #4f46e5;
  --accent-text: #ffffff;
  --accent-soft: #eef0ff;
  --ok: #15803d;
  --ok-soft: #e7f6ec;
  --warn: #b45309;
  --warn-soft: #fdf3e2;
  --bad: #c62828;
  --bad-soft: #fdecec;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --panel: #181b21;
    --text: #e7e9ee;
    --muted: #9aa2b1;
    --border: #2a2f38;
    --accent: #818cf8;
    --accent-text: #0f1115;
    --accent-soft: #23264a;
    --ok: #4ade80;
    --ok-soft: #12301d;
    --warn: #fbbf24;
    --warn-soft: #3a2c0c;
    --bad: #f87171;
    --bad-soft: #3b1515;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
button, input, select { font: inherit; color: inherit; }

/* ---- layout ---- */
header.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 12px 20px;
  background: var(--panel); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; }
.brand svg { width: 26px; height: 26px; }
.server-info { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; color: var(--muted); }
.spacer { flex: 1; }
main { max-width: 1240px; margin: 0 auto; padding: 20px; }
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar h1 { font-size: 20px; margin: 0 12px 0 0; }
.toolbar input[type=search] { width: min(300px, 100%); }
footer { color: var(--muted); font-size: 12px; text-align: center; padding: 24px 16px 32px; }
footer details { margin-top: 6px; }
footer summary { cursor: pointer; display: inline; }
footer ul { list-style: none; padding: 0; margin: 6px 0 0; font-family: ui-monospace, monospace; overflow-wrap: anywhere; }

/* ---- controls ---- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); background: var(--panel);
  padding: 7px 12px; border-radius: 8px; cursor: pointer; white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.danger { color: var(--bad); }
.btn.icon { padding: 6px 8px; }
.btn:disabled { opacity: .5; cursor: default; }
input[type=text], input[type=password], input[type=number], input[type=search] {
  border: 1px solid var(--border); background: var(--panel);
  border-radius: 8px; padding: 7px 10px; width: 100%;
}
input:focus-visible, .btn:focus-visible, .switch input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 1px; }

.switch { position: relative; display: inline-block; width: 38px; height: 22px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.switch span {
  position: absolute; inset: 0; border-radius: 22px; cursor: pointer;
  background: var(--border); transition: background .15s;
}
.switch span::before {
  content: ""; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px;
  border-radius: 50%; background: #fff; transition: transform .15s; box-shadow: var(--shadow);
}
.switch input:checked + span { background: var(--accent); }
.switch input:checked + span::before { transform: translateX(16px); }

.pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: var(--border); color: var(--muted);
}
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

/* ---- users table ---- */
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
table.users { width: 100%; border-collapse: collapse; }
table.users th {
  text-align: left; font-size: 12px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .03em;
  padding: 10px 12px; border-bottom: 1px solid var(--border);
}
table.users td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.users tr:last-child td { border-bottom: 0; }
.uname { font-weight: 600; }
.note { color: var(--muted); font-size: 12px; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mono { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.usage { min-width: 130px; }
.bar { height: 5px; border-radius: 5px; background: var(--border); margin-top: 4px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); }
.bar.full > i { background: var(--bad); }
.actions { display: flex; gap: 6px; justify-content: flex-end; }
.empty { padding: 40px 20px; text-align: center; color: var(--muted); }
.lbl { display: none; }

@media (max-width: 860px) {
  table.users thead { display: none; }
  table.users, table.users tbody, table.users tr, table.users td { display: block; width: 100%; }
  table.users tr { padding: 10px 4px; border-bottom: 1px solid var(--border); }
  table.users tr:last-child { border-bottom: 0; }
  table.users td { border: 0; padding: 5px 12px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
  table.users td.first { display: block; }
  .lbl { display: inline; color: var(--muted); font-size: 12px; }
  .actions { justify-content: flex-start; flex-wrap: wrap; }
  .toolbar input[type=search] { width: 100%; order: 3; }
  header.top { padding: 10px 14px; }
  main { padding: 14px; }
}

/* ---- dialogs ---- */
dialog {
  border: 1px solid var(--border); border-radius: 14px; padding: 0;
  background: var(--panel); color: var(--text); width: min(480px, calc(100vw - 24px));
  box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
}
dialog::backdrop { background: rgba(10, 12, 16, .45); }
dialog form, dialog .body { padding: 20px; }
dialog h2 { margin: 0 0 14px; font-size: 18px; }
.field { margin-bottom: 14px; }
.field > label { display: block; font-weight: 600; margin-bottom: 5px; }
.field .hint { color: var(--muted); font-size: 12px; margin-top: 4px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.check { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--border); }
.check div small { display: block; color: var(--muted); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.inline { display: flex; gap: 6px; }
.error { color: var(--bad); min-height: 1.2em; margin: 6px 0 0; }
.qr { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.qr img { width: 260px; height: 260px; background: #fff; padding: 8px; border-radius: 8px; image-rendering: pixelated; }
.qr code { word-break: break-all; font-size: 12px; background: var(--bg); padding: 8px; border-radius: 8px; width: 100%; }

.menu { position: relative; }
.menu-list {
  position: absolute; right: 0; top: calc(100% + 4px); z-index: 10; min-width: 160px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); padding: 4px;
}
.menu-list button { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 8px 10px; border-radius: 6px; cursor: pointer; }
.menu-list button:hover { background: var(--bg); }
.menu-list button.danger { color: var(--bad); }

#toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--panel); padding: 9px 16px; border-radius: 8px;
  box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 50;
}
#toast.show { opacity: 1; }
#toast.bad { background: var(--bad); color: #fff; }

/* ---- login ---- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login { width: min(360px, 100%); padding: 28px; }
.login .brand { justify-content: center; margin-bottom: 20px; font-size: 22px; }
.login .btn.primary { width: 100%; justify-content: center; padding: 9px; }