:root {
  --ink: #edf7ff;
  --muted: #8ea5b8;
  --line: rgba(122, 220, 255, .22);
  --panel: rgba(7, 20, 33, .78);
  --panel-strong: rgba(10, 31, 50, .92);
  --sidebar: rgba(4, 14, 25, .96);
  --accent: #35d3ff;
  --accent-2: #7cffc4;
  --danger: #ff5b7f;
}

html, body { min-height: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 6%, rgba(53, 211, 255, .20), transparent 28%),
    radial-gradient(circle at 82% 18%, rgba(124, 255, 196, .12), transparent 26%),
    linear-gradient(135deg, #020811 0%, #071827 46%, #03101d 100%);
  font-family: Calibri, "Segoe UI", Arial, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.72), transparent 82%);
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: #fff; }
.app-shell { display: flex; min-height: 100vh; position: relative; }
.sidebar {
  width: 286px;
  flex: 0 0 286px;
  background: var(--sidebar);
  color: #fff;
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  box-shadow: 18px 0 48px rgba(0,0,0,.34);
}
.brand { display: flex; align-items: center; gap: 12px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: #03101d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 900;
  border-radius: 12px;
  box-shadow: 0 0 28px rgba(53,211,255,.45);
}
.brand strong { letter-spacing: .08em; }
.brand span { display: block; font-size: .76rem; color: var(--muted); text-transform: uppercase; }
.sidebar .nav { margin-top: 20px; gap: 7px; }
.sidebar .nav-link {
  color: rgba(237,247,255,.82);
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 11px 12px;
}
.sidebar .nav-link:hover {
  color: #fff;
  background: rgba(53,211,255,.10);
  border-color: var(--line);
}
.main { flex: 1; min-width: 0; }
.topbar {
  min-height: 98px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 30px;
  background: rgba(3, 12, 22, .72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.topbar h1 { font-size: 1.55rem; margin: 2px 0 0; font-weight: 700; }
.section-kicker { color: var(--accent); font-size: .75rem; text-transform: uppercase; letter-spacing: .14em; }
.content { padding: 26px 30px; }
.panel, .metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(0,0,0,.26), inset 0 1px 0 rgba(255,255,255,.04);
  backdrop-filter: blur(16px);
}
.panel { padding: 20px; }
.metric { border-left: 4px solid var(--accent); padding: 18px; min-height: 104px; }
.metric .value { font-size: 2.1rem; font-weight: 800; color: #fff; text-shadow: 0 0 20px rgba(53,211,255,.35); }
.text-muted, .form-text { color: var(--muted) !important; }
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--ink);
  --bs-table-border-color: rgba(122,220,255,.14);
  --bs-table-hover-bg: rgba(53,211,255,.08);
  --bs-table-hover-color: #fff;
  color: var(--ink);
}
.table td, .table th {
  vertical-align: middle;
  border-color: rgba(122,220,255,.14);
  background: transparent !important;
  color: inherit;
}
.table tbody tr {
  background: rgba(4, 14, 25, .42);
}
.table thead th { color: var(--accent); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.table-hover tbody tr:hover { background: rgba(53,211,255,.08); color: #fff; }
.form-control, .form-select {
  color: var(--ink);
  background: rgba(2, 10, 18, .76);
  border: 1px solid rgba(122,220,255,.26);
}
.form-control:focus, .form-select:focus {
  color: #fff;
  background: rgba(2, 10, 18, .92);
  border-color: var(--accent);
  box-shadow: 0 0 0 .2rem rgba(53,211,255,.16);
}
.form-control[readonly] { background: rgba(53,211,255,.08); color: var(--accent-2); }
.btn { border-radius: 7px; font-weight: 650; }
.btn-primary {
  color: #03101d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: 0;
  box-shadow: 0 0 18px rgba(53,211,255,.22);
}
.btn-outline-primary, .btn-outline-secondary {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255,255,255,.03);
}
.btn-outline-primary:hover, .btn-outline-secondary:hover { background: rgba(53,211,255,.14); border-color: var(--accent); }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid .span-2 { grid-column: 1 / -1; }
.official-text { white-space: pre-line; line-height: 1.65; }
.catalog-tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.catalog-tab {
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7,20,33,.58);
  color: var(--muted);
}
.catalog-tab.active, .catalog-tab:hover {
  color: #03101d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.status-pill {
  display: inline-flex;
  min-width: 76px;
  justify-content: center;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: .78rem;
  border: 1px solid var(--line);
}
.status-pill.ok { color: var(--accent-2); background: rgba(124,255,196,.08); }
.status-pill.off { color: #ffb4c3; background: rgba(255,91,127,.08); }
.alert { border-radius: 8px; border-color: var(--line); }
.alert-danger, .validation-panel.validation-summary-errors {
  color: #ffd8df;
  background: rgba(255,91,127,.13);
  border: 1px solid rgba(255,91,127,.55);
}
.alert-info {
  color: var(--ink);
  background: rgba(53,211,255,.13);
  border: 1px solid rgba(53,211,255,.45);
}
.app-alert { margin-bottom: 18px; }
.validation-panel.validation-summary-valid { display: none; }
.validation-panel.validation-summary-errors {
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 16px;
}
.validation-panel ul { margin-bottom: 0; }
.text-danger, .field-validation-error { color: #ff8ea6 !important; font-weight: 650; }
.input-validation-error {
  border-color: var(--danger) !important;
  box-shadow: 0 0 0 .16rem rgba(255,91,127,.14) !important;
}
@media (max-width: 900px) {
  .app-shell { display: block; }
  .sidebar { width: auto; }
  .topbar { display: block; }
  .content { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
}