:root {
  --ink: #0a0a0a;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg0: #f3f4f6;
  --bg1: #f8f8f8;
  --surface: #ffffff;
  --accent: #06b6d4;
  --accent-hover: #0891b2;
  --accent-soft: rgba(6, 182, 212, 0.12);
  --warn: #b45309;
  --warn-bg: #fff7ed;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --ok: #0e7490;
  --ok-bg: #ecfeff;
  --nav: #000000;
  --nav-border: #262626;
  --light-gray: #d3d3d3;
  --font: Inter, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --display: Orbitron, Inter, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse 70% 40% at 0% 0%, rgba(6, 182, 212, 0.08), transparent 55%),
    linear-gradient(180deg, var(--bg1), var(--bg0));
  min-height: 100vh;
}

a { color: var(--accent-hover); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--accent); }

.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-rows: 1fr auto;
  min-height: 100vh;
}

.sidebar {
  grid-row: 1 / 2;
  background: var(--nav);
  color: #fff;
  padding: 1.35rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  border-right: 1px solid var(--nav-border);
}
.brand {
  display: block;
  text-decoration: none;
  padding: 0.15rem 0.35rem 0.5rem;
  border-bottom: 1px solid rgba(6, 182, 212, 0.25);
}
.brand:hover { text-decoration: none; }
.brand img {
  display: block;
  height: 36px;
  width: auto;
  max-width: 100%;
}
.brand .product {
  display: block;
  margin-top: 0.55rem;
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.brand .client {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.78rem;
  color: var(--light-gray);
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  font-family: var(--font);
}

.nav a {
  display: block;
  color: var(--light-gray);
  padding: 0.55rem 0.7rem;
  border-radius: 4px;
  margin-bottom: 0.2rem;
  text-decoration: none;
  font-size: 0.95rem;
  border: 1px solid transparent;
}
.nav a:hover {
  background: rgba(6, 182, 212, 0.1);
  color: #fff;
  text-decoration: none;
}
.nav a.active {
  background: rgba(6, 182, 212, 0.18);
  color: #fff;
  font-weight: 600;
  border-color: rgba(6, 182, 212, 0.35);
}
.sidebar-foot {
  margin-top: auto;
  font-size: 0.8rem;
  color: var(--light-gray);
  line-height: 1.45;
  padding-top: 0.75rem;
  border-top: 1px solid var(--nav-border);
}
.sidebar-foot a { color: var(--accent); }
.sidebar-foot button.linkish {
  background: none;
  border: 0;
  padding: 0;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
}

.main {
  grid-row: 1 / 2;
  padding: 1.5rem 1.75rem 1.5rem;
  max-width: 1100px;
}

.site-footer {
  grid-column: 1 / -1;
  background: #000;
  color: var(--light-gray);
  border-top: 1px solid var(--nav-border);
  padding: 1.25rem 1.5rem;
  font-size: 0.85rem;
}
.site-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem 1.5rem;
  align-items: center;
}
.site-footer img {
  height: 28px;
  width: auto;
}
.site-footer a { color: var(--accent); }
.site-footer .addr {
  text-align: center;
  line-height: 1.5;
}
.site-footer .copy {
  font-size: 0.78rem;
  opacity: 0.85;
  margin-top: 0.25rem;
}
.site-footer .links {
  display: flex;
  gap: 0.85rem;
  justify-content: flex-end;
}
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
  }
  .brand { border-bottom: 0; padding: 0; }
  .brand .product, .brand .client { display: none; }
  .nav { display: flex; flex-wrap: wrap; gap: 0.15rem; }
  .sidebar-foot { margin-top: 0; width: 100%; border-top: 0; padding-top: 0; }
  .site-footer-inner { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .site-footer .addr { text-align: center; }
  .site-footer .links { justify-content: center; }
  .panel-grid { grid-template-columns: 1fr; }
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 1.25rem;
}
.page-head h1 {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.page-head .sub { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.95rem; }

.btn {
  display: inline-block;
  border: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.55rem 0.95rem;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
  text-decoration: none;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--accent-hover);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: var(--accent-soft); color: var(--accent-hover); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.82rem; }

.messages { list-style: none; margin: 0 0 1rem; padding: 0; }
.messages li {
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.4rem;
  border-radius: 4px;
  font-size: 0.92rem;
}
.messages .success { background: var(--ok-bg); color: var(--ok); }
.messages .error { background: var(--danger-bg); color: var(--danger); }
.messages .warning { background: var(--warn-bg); color: var(--warn); }
.messages .info { background: #e8eef5; color: #1e3a5f; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  padding: 0.9rem 1rem;
}
.stat .n { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.03em; }
.stat .l { color: var(--muted); font-size: 0.82rem; margin-top: 0.15rem; }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 1.1rem 1.2rem;
  margin-bottom: 1.25rem;
}
.panel h2 {
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
  font-weight: 650;
}
.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
table.data tr:hover td { background: var(--accent-soft); }
.mono { font-family: var(--mono); font-size: 0.86rem; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-off { background: #ececec; color: #555; }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  align-items: center;
}
.toolbar .input { max-width: 260px; }

label.field {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0 0 0.3rem;
}
.input {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  background: #fff;
  font: inherit;
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
  border-radius: 4px;
}
.input:focus {
  outline: 2px solid rgba(6, 182, 212, 0.35);
  border-color: var(--accent);
}
.check { margin-right: 0.4rem; }
.help { color: var(--muted); font-size: 0.8rem; margin: -0.55rem 0 0.85rem; }
.form-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }
.errlist { color: var(--danger); font-size: 0.85rem; margin: 0 0 0.75rem; padding-left: 1.1rem; }
.meta-row { color: var(--muted); font-size: 0.88rem; margin: 0.25rem 0; }
.meta-row strong { color: var(--ink); font-weight: 600; }

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(6, 182, 212, 0.18), transparent 60%),
    #000;
}
.login-card {
  width: min(420px, 100%);
  background: #0a0a0a;
  border: 1px solid rgba(6, 182, 212, 0.28);
  padding: 2rem 1.75rem 1.5rem;
  box-shadow: 0 0 40px rgba(6, 182, 212, 0.12);
  color: #fff;
}
.login-card .login-logo {
  display: block;
  height: 40px;
  width: auto;
  margin: 0 auto 1.25rem;
}
.login-card h1 {
  margin: 0 0 0.35rem;
  font-size: 1.25rem;
  font-family: var(--display);
  letter-spacing: 0.04em;
  text-align: center;
  color: #fff;
}
.login-card .sub {
  color: var(--light-gray);
  margin: 0 0 1.4rem;
  font-size: 0.92rem;
  text-align: center;
}
.login-card label.field { color: var(--light-gray); }
.login-card .input {
  background: #111;
  border-color: #333;
  color: #fff;
}
.login-card .help { color: #9ca3af; }
.login-card .help a { color: var(--accent); }
.login-card .errlist { color: #fca5a5; }
.login-card .btn { width: 100%; }
.login-footer {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid #262626;
  text-align: center;
  font-size: 0.78rem;
  color: #9ca3af;
  line-height: 1.5;
}
.login-footer a { color: var(--accent); }