/* ===========================================================================
   Home Network — UI theme
   Modern dark control-panel aesthetic: deep slate canvas, glassy panels,
   one electric-blue accent, generous spacing, subtle motion.
   =========================================================================== */
:root {
  --bg-0: #0b0f17;          /* page */
  --bg-1: #121826;          /* panels */
  --bg-2: #1a2233;          /* raised / hover */
  --line: #232c3d;
  --line-2: #2e3950;
  --txt: #e8edf6;
  --txt-2: #9aa7bd;
  --muted: #6b788f;
  --accent: #4d8dff;
  --accent-2: #6aa1ff;
  --accent-soft: rgba(77,141,255,.14);
  --ok: #34d399;
  --ok-soft: rgba(52,211,153,.14);
  --warn: #fbbf24;
  --warn-soft: rgba(251,191,36,.14);
  --danger: #f87171;
  --danger-soft: rgba(248,113,113,.14);
  --radius: 12px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --shadow-lg: 0 24px 70px rgba(0,0,0,.55);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 14.5px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--txt);
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(77,141,255,.10), transparent 60%),
    radial-gradient(900px 500px at -5% 0%, rgba(106,161,255,.06), transparent 55%),
    var(--bg-0);
  -webkit-font-smoothing: antialiased;
}
code, .mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
.small { font-size: 12px; }
.muted { color: var(--muted); }
a { color: var(--accent-2); }

/* ----------------------------------------------------------------- top bar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 8px;
  padding: 0 22px; height: 60px;
  background: rgba(15,20,31,.78);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .brand { font-weight: 650; font-size: 15px; letter-spacing: .2px; margin-right: 14px; display: flex; align-items: center; gap: 9px; }
.topbar .brand .logo { font-size: 18px; }
.topbar a:not(.brand) {
  color: var(--txt-2); text-decoration: none; font-size: 13.5px; font-weight: 500;
  padding: 7px 13px; border-radius: 8px; transition: background .15s, color .15s;
}
.topbar a:not(.brand):hover { color: var(--txt); background: var(--bg-2); }
.topbar a.on { color: #fff; background: var(--accent-soft); box-shadow: inset 0 0 0 1px rgba(77,141,255,.35); }
.topbar a.right { margin-left: auto; color: var(--muted); }
.topbar a.right:hover { color: var(--danger); background: var(--danger-soft); }

main { max-width: 1180px; margin: 0 auto; padding: 30px 22px 60px; }

/* --------------------------------------------------------------- page head */
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 18px; margin-bottom: 22px; flex-wrap: wrap; }
.page-head h1 { margin: 0 0 5px; font-size: 25px; font-weight: 650; letter-spacing: -.2px; }
.page-head .sub { margin: 0; color: var(--txt-2); max-width: 60ch; }
.page-head .sub code { color: var(--accent-2); background: var(--accent-soft); padding: 1px 6px; border-radius: 5px; }
.actions { display: flex; align-items: center; gap: 12px; }
.meta { color: var(--muted); font-size: 12.5px; }

/* ----------------------------------------------------------------- buttons */
button {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--bg-2); color: var(--txt);
  border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  padding: 8px 14px; cursor: pointer; font-size: 13.5px; font-weight: 500;
  transition: background .15s, border-color .15s, transform .05s, box-shadow .15s;
}
button:hover { border-color: var(--accent); background: var(--bg-1); }
button:active { transform: translateY(1px); }
button.primary {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  border-color: transparent; color: #061021; font-weight: 600;
  box-shadow: 0 6px 18px rgba(77,141,255,.32);
}
button.primary:hover { box-shadow: 0 8px 24px rgba(77,141,255,.45); }
button.danger { color: #ffc7c7; border-color: #4a2730; background: var(--danger-soft); }
button.danger:hover { border-color: var(--danger); }
button:disabled { opacity: .55; cursor: progress; }
button.block { width: 100%; justify-content: center; padding: 11px; font-size: 15px; }
.spinner {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.3); border-top-color: #fff;
  animation: spin .7s linear infinite; display: none;
}
button.loading .spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* -------------------------------------------------------------- stat cards */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat {
  background: linear-gradient(180deg, var(--bg-1), var(--bg-0));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px;
  position: relative; overflow: hidden;
}
.stat::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent); opacity: .8; }
.stat.ok::before { background: var(--ok); }
.stat.warn::before { background: var(--warn); }
.stat .n { font-size: 28px; font-weight: 680; letter-spacing: -.5px; line-height: 1.1; }
.stat .l { font-size: 12px; color: var(--txt-2); margin-top: 3px; text-transform: uppercase; letter-spacing: .06em; }

/* ------------------------------------------------------------------ tables */
.card { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
table.grid { width: 100%; border-collapse: collapse; }
.grid th, .grid td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.grid thead th {
  font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted);
  font-weight: 600; background: var(--bg-2); position: sticky; top: 60px;
}
.grid tbody tr { transition: background .12s; }
.grid tbody tr:hover { background: var(--bg-2); }
.grid tr:last-child td { border-bottom: none; }
.grid tr.unmanaged td:first-child { box-shadow: inset 3px 0 0 var(--warn); }
.grid td.mono { font-variant-numeric: tabular-nums; }
.row-actions { display: flex; gap: 7px; justify-content: flex-end; }
.row-actions button { padding: 5px 10px; font-size: 12.5px; }

/* ------------------------------------------------------------------- pills */
.pill { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 600; border: 1px solid transparent; }
.pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill.on { color: var(--ok); background: var(--ok-soft); }
.pill.off { color: var(--muted); background: rgba(107,120,143,.12); }
.pill.warn { color: var(--warn); background: var(--warn-soft); }
.pill.kind { color: var(--accent-2); background: var(--accent-soft); }
.pill.st-reserved { color: var(--accent-2); background: var(--accent-soft); }
.pill.st-in-use { color: var(--ok); background: var(--ok-soft); }
.pill.st-free { color: var(--muted); background: rgba(107,120,143,.12); }
.port { display: inline-block; padding: 1px 7px; margin: 1px 3px 1px 0; border-radius: 6px; font-size: 11.5px;
  background: var(--bg-2); border: 1px solid var(--line-2); font-family: ui-monospace, monospace; }

/* ------------------------------------------------------------- status/empty */
.status { min-height: 22px; margin: 4px 0 12px; color: var(--txt-2); font-size: 13px; display: flex; align-items: center; gap: 8px; }
.status.error { color: var(--danger); }
.empty { padding: 46px 20px; text-align: center; color: var(--muted); }
.empty .big { font-size: 30px; margin-bottom: 8px; }
.skeleton-row td { color: transparent; }
.skeleton-row td > span { display: inline-block; height: 11px; width: 70%; border-radius: 6px;
  background: linear-gradient(90deg, var(--bg-2), var(--line-2), var(--bg-2)); background-size: 200% 100%;
  animation: shimmer 1.3s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

.warn-banner { background: var(--warn-soft); color: #f5d98b; padding: 9px 22px; font-size: 13px; border-bottom: 1px solid #4a3f1a; }

/* ------------------------------------------------------------- auth pages */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card {
  width: 380px; max-width: 92vw; background: linear-gradient(180deg, var(--bg-1), #0e1320);
  border: 1px solid var(--line-2); border-radius: 18px; padding: 38px 34px; text-align: center;
  box-shadow: var(--shadow-lg); position: relative;
}
.auth-card::before { content: ""; position: absolute; inset: 0; border-radius: 18px; padding: 1px;
  background: linear-gradient(180deg, rgba(77,141,255,.4), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.auth-card.wide { width: 440px; }
.auth-logo { font-size: 42px; line-height: 1; }
.auth-card h1 { margin: 14px 0 4px; font-size: 23px; font-weight: 650; }
.auth-sub { margin: 0 0 24px; color: var(--txt-2); font-size: 14px; }
.auth-card .field { display: block; text-align: left; margin: 14px 0; }
.auth-card .field span { display: block; font-size: 12px; color: var(--txt-2); margin-bottom: 6px; font-weight: 500; }
.auth-card input {
  width: 100%; padding: 12px 13px; border-radius: 10px; font-size: 15px;
  border: 1px solid var(--line-2); background: var(--bg-0); color: var(--txt); transition: border-color .15s, box-shadow .15s;
}
.auth-card input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.auth-error { background: var(--danger-soft); border: 1px solid #4a2730; color: #ffb3b3;
  border-radius: 10px; padding: 10px 13px; font-size: 13px; margin-bottom: 16px; }
.auth-foot { margin: 20px 0 0; font-size: 12px; color: var(--muted); }
.auth-foot a { color: var(--accent-2); }
.otp { width: 100%; text-align: center; letter-spacing: 12px; font-size: 28px;
  font-family: ui-monospace, monospace; padding: 14px 12px; }
.hint { color: var(--muted); font-size: 12px; margin: 12px 0; }
.qr { background: #fff; padding: 14px; border-radius: 14px; display: inline-block; margin: 8px 0 4px; }
.qr svg { width: 196px; height: 196px; display: block; }
.secret { display: inline-block; margin-top: 5px; padding: 5px 9px; background: var(--bg-0);
  border: 1px solid var(--line-2); border-radius: 7px; letter-spacing: 2px; word-break: break-all; font-size: 13px; }

/* ------------------------------------------------------------------- modal */
.modal { position: fixed; inset: 0; background: rgba(4,7,13,.62); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal.hidden { display: none; }
.modal-card { background: var(--bg-1); border: 1px solid var(--line-2); border-radius: 16px;
  padding: 26px; width: 440px; max-width: 92vw; max-height: 90vh; overflow: auto; box-shadow: var(--shadow-lg); }
.modal-card h2 { margin: 0 0 16px; font-size: 19px; font-weight: 640; }
.modal-card label { display: block; margin: 12px 0; font-size: 12px; color: var(--txt-2); font-weight: 500; }
.modal-card input, .modal-card select, .modal-card textarea {
  width: 100%; margin-top: 5px; padding: 9px 11px; border-radius: 9px; font-size: 14px;
  border: 1px solid var(--line-2); background: var(--bg-0); color: var(--txt); }
.modal-card input:focus, .modal-card select:focus, .modal-card textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.modal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* -------------------------------------------------------------- responsive */
@media (max-width: 820px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid th:nth-child(4), .grid td:nth-child(4) { display: none; } /* vendor */
  .modal-grid { grid-template-columns: 1fr; }
}