:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --ink: #1c2128;
  --muted: #6b7480;
  --line: #e3e6ea;
  --accent: #2f6feb;
  --ok: #1a7f37;
  --warn: #9a6700;
  --err: #cf222e;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16191d;
    --panel: #1e2227;
    --ink: #e6e9ee;
    --muted: #9aa3ae;
    --line: #2c3138;
    --accent: #4f8bf0;
    --ok: #3fb950;
    --warn: #d29922;
    --err: #f85149;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

body.centered { display: grid; place-items: center; min-height: 100vh; }

.layout { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 16px 0;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; padding: 0 18px 16px; }
.brand-mark { font-size: 20px; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 18px; color: var(--ink); text-decoration: none;
  border-left: 3px solid transparent;
}
.sidebar nav a:hover { background: rgba(127,127,127,.08); }
.sidebar nav a.active { border-left-color: var(--accent); background: rgba(47,111,235,.10); font-weight: 600; }
.nav-icon { width: 20px; text-align: center; }
.sidebar-foot { margin-top: auto; padding: 14px 18px 0; display: flex; justify-content: space-between; }

main { display: flex; flex-direction: column; min-width: 0; }
.page-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.page-head h1 { font-size: 18px; margin: 0; }
.head-right { display: flex; gap: 8px; }
.page-body { padding: 20px 24px 48px; display: flex; flex-direction: column; gap: 16px; }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 15px; }
.card h3 { margin: 14px 0 8px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }

.row { display: flex; align-items: center; }
.row.gap { gap: 8px; }
.row.wrap { flex-wrap: wrap; }
.spread { justify-content: space-between; }
.stack { display: flex; flex-direction: column; gap: 10px; }

label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.inline { flex-direction: row; align-items: center; gap: 8px; color: var(--ink); }
input, select, textarea {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; width: 100%;
}
textarea { min-height: 130px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
input[type=checkbox] { width: auto; }

.btn {
  font: inherit; cursor: pointer; padding: 7px 13px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
}
.btn:hover { background: rgba(127,127,127,.08); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { background: var(--err); border-color: var(--err); color: #fff; }
.btn.small { padding: 4px 9px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 999px; font-size: 12px;
  background: rgba(127,127,127,.14); border: 1px solid var(--line);
}
.badge.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.badge.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.badge.err { color: var(--err); border-color: color-mix(in srgb, var(--err) 40%, transparent); }

.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stat .value { font-size: 24px; font-weight: 600; }
.stat .label { color: var(--muted); font-size: 12px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
tbody tr:hover { background: rgba(127,127,127,.05); }
.table-wrap { overflow-x: auto; }

code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
pre {
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
  padding: 12px; overflow-x: auto; white-space: pre-wrap; word-break: break-word; margin: 0;
}
.muted { color: var(--muted); }
.link-quiet { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.alert { padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); margin: 0 0 12px; }
.alert.error { color: var(--err); border-color: color-mix(in srgb, var(--err) 40%, transparent); }
.alert.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.alert.info { color: var(--muted); }

.login { width: 340px; display: flex; flex-direction: column; gap: 12px; }
.login h1 { font-size: 17px; margin: 0 0 6px; }

#toasts { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 50; }
.toast {
  background: var(--panel); border: 1px solid var(--line); border-left-width: 3px;
  border-radius: 8px; padding: 10px 14px; max-width: 380px; box-shadow: 0 6px 18px rgba(0,0,0,.12);
}
.toast.ok { border-left-color: var(--ok); }
.toast.err { border-left-color: var(--err); }

dialog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); color: var(--ink); padding: 18px; }
dialog::backdrop { background: rgba(0,0,0,.45); }

.nav-grid { display: flex; flex-direction: column; gap: 8px; }
.nav-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; padding: 8px; border: 1px dashed var(--line); border-radius: 8px; }
.nav-row .nav-key { min-width: 130px; }
.chip-list { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { background: rgba(127,127,127,.12); border-radius: 999px; padding: 3px 10px; font-size: 12px; display: inline-flex; gap: 6px; align-items: center; }
.chip button { border: 0; background: none; cursor: pointer; color: var(--muted); font-size: 14px; line-height: 1; padding: 0; }

.preview-keyboard { display: flex; flex-direction: column; gap: 6px; max-width: 460px; }
.preview-keyboard .kb-row { display: flex; gap: 6px; }
.preview-keyboard .kb-btn {
  flex: 1; text-align: center; padding: 8px; border-radius: 8px;
  background: rgba(47,111,235,.12); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  font-size: 13px; text-decoration: none; color: var(--ink);
}