:root {
  --bg: #0f172a; --panel: #1e293b; --panel2: #273449; --panel3: #324064; --text: #e2e8f0;
  --muted: #94a3b8; --accent: #6366f1; --accent2: #4f46e5; --ok: #22c55e; --err: #ef4444; --warn: #f59e0b;
  --line: #334155;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3 { margin: 0 0 .5em; }
.muted { color: var(--muted); }
.btn { display: inline-block; background: var(--accent); color: #fff; border: 0; padding: 9px 16px; border-radius: 8px; cursor: pointer; font-size: 14px; transition: background .15s; }
.btn:hover { background: var(--accent2); }
.btn.sec { background: var(--panel2); }
.btn.sec:hover { background: var(--panel3); }
.btn.danger { background: var(--err); }
.btn:disabled { opacity: .5; cursor: default; }
input, select, textarea { width: 100%; padding: 8px 10px; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 6px; font-size: 14px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
label { display: block; margin-bottom: 12px; }
label small { color: var(--muted); }
.form { display: flex; flex-direction: column; }
.form > .btn, .form > .row > .btn { align-self: flex-start; min-width: 120px; }
.msg { min-height: 1.2em; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--err); }
.badge { display: inline-block; background: var(--accent); color: #fff; font-size: 10px; font-weight: 700; letter-spacing: 1px; padding: 2px 8px; border-radius: 4px; margin-bottom: 14px; }

/* auth */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth-card { width: 100%; max-width: 380px; background: var(--panel); padding: 28px; border-radius: 14px; border: 1px solid var(--line); }
.auth-card h1 { font-size: 24px; }
.switch { font-size: 13px; color: var(--muted); }

/* layout */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 230px; flex: 0 0 230px; background: var(--panel); border-right: 1px solid var(--line); padding: 18px 14px; position: sticky; top: 0; height: 100vh; overflow: auto; }
.sidebar h1 { font-size: 18px; margin-bottom: 18px; }
.sidebar nav a { display: block; padding: 8px 10px; border-radius: 6px; color: var(--text); margin-bottom: 2px; transition: background .12s; }
.sidebar nav a:hover { background: var(--panel2); }
.sidebar nav a.nav.active { background: var(--accent); color: #fff; }
.main { flex: 1; padding: 22px; max-width: 1100px; margin: 0 auto; width: 100%; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.topbar .user { color: var(--muted); font-size: 13px; }

/* mobile sidebar: bottom nav bar instead of side panel */
@media (max-width: 860px) {
  .layout { flex-direction: column-reverse; }
  .sidebar {
    position: fixed; left: 0; right: 0; bottom: 0; top: auto;
    width: 100%; height: auto; max-height: 56vh;
    border-right: 0; border-top: 1px solid var(--line);
    padding: 10px 12px 14px; z-index: 100;
    box-shadow: 0 -6px 24px rgba(0,0,0,.35);
  }
  .sidebar h1 { font-size: 15px; margin-bottom: 8px; }
  .sidebar .badge { margin-bottom: 8px; }
  .sidebar nav { display: flex; flex-wrap: wrap; gap: 4px; }
  .sidebar nav a { padding: 6px 9px; font-size: 12.5px; margin-bottom: 0; border: 1px solid var(--line); }
  .sidebar nav a.nav.active { border-color: var(--accent); }
  .main { padding: 14px 14px 90px; max-width: 100%; }
  .panel, .grid { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { min-width: 560px; }
}

@media (max-width: 520px) {
  .card .val { font-size: 17px; }
  .grid { grid-template-columns: 1fr; }
  .sidebar nav a { font-size: 12px; padding: 5px 8px; }
  .auth-card { padding: 20px; }
}

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.card .lbl { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.card .val { font-size: 20px; font-weight: 600; margin-top: 4px; }
.card .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 18px; }
.panel h3 { margin-bottom: 12px; }
.panel h4 { margin-bottom: 10px; }
.panel .panel { background: var(--panel2); border-color: var(--line); margin-bottom: 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: 13px; }
th { color: var(--muted); font-weight: 600; }
tr:hover td { background: rgba(99,102,241,.06); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.tag.ok { background: rgba(34,197,94,.15); color: var(--ok); }
.tag.warn { background: rgba(245,158,11,.15); color: var(--warn); }
.tag.err { background: rgba(239,68,68,.15); color: var(--err); }
.tag.mut { background: var(--panel2); color: var(--muted); }
pre { background: var(--bg); padding: 8px; border-radius: 6px; overflow: auto; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1; min-width: 120px; }
.hint { color: var(--muted); font-size: 12px; }
.empty { color: var(--muted); font-style: italic; padding: 8px 0; }