:root {
    --nv-bg: #070d18;
    --nv-bg-2: #0c1628;
    --nv-panel: #111c31;
    --nv-panel-2: #15233d;
    --nv-border: rgba(94, 234, 212, 0.12);
    --nv-text: #e6eef8;
    --nv-muted: #8aa0b8;
    --nv-accent: #2dd4bf;
    --nv-accent-2: #22d3ee;
    --nv-warn: #fbbf24;
    --nv-danger: #f87171;
    --nv-ok: #34d399;
    --nv-sidebar: 260px;
}

* { box-sizing: border-box; }

body.nv-body {
    margin: 0;
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(45, 212, 191, 0.12), transparent 55%),
        radial-gradient(900px 500px at 100% 0%, rgba(34, 211, 238, 0.08), transparent 50%),
        linear-gradient(180deg, var(--nv-bg), var(--nv-bg-2));
    color: var(--nv-text);
    font-family: "Segoe UI", "IBM Plex Sans", system-ui, sans-serif;
    min-height: 100vh;
}

.nv-shell { display: flex; min-height: 100vh; }

.nv-sidebar {
    width: var(--nv-sidebar);
    background: rgba(8, 14, 26, 0.92);
    border-right: 1px solid var(--nv-border);
    padding: 1.25rem 0.85rem;
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.nv-brand {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    padding: 0.35rem 0.65rem 1.25rem;
}
.nv-brand i {
    font-size: 1.75rem;
    color: var(--nv-accent);
    filter: drop-shadow(0 0 12px rgba(45, 212, 191, 0.35));
}
.nv-brand strong { display: block; letter-spacing: 0.04em; font-size: 1.15rem; }
.nv-brand small { color: var(--nv-muted); }

.nv-nav { display: flex; flex-direction: column; gap: 0.2rem; flex: 1; overflow-y: auto; }
.nv-nav-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.65rem 0.8rem;
    color: var(--nv-muted);
    text-decoration: none;
    border-radius: 0.55rem;
    transition: 0.15s ease;
}
.nv-nav-link:hover { color: var(--nv-text); background: rgba(45, 212, 191, 0.08); }
.nv-nav-link.active {
    color: #042f2e;
    background: linear-gradient(90deg, var(--nv-accent), var(--nv-accent-2));
    font-weight: 600;
}
.nv-sidebar-foot { padding: 0.75rem; }

.nv-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.nv-topbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 1rem;
    border-bottom: 1px solid var(--nv-border);
    background: rgba(7, 13, 24, 0.65);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 50;
}
.nv-page-title { font-size: 1.05rem; margin: 0; font-weight: 700; line-height: 1.2; }
.nv-page-sub { color: var(--nv-muted); font-size: 0.75rem; }
.nv-content { padding: 0.85rem 1rem 1.4rem; }
.nv-content .row.g-3 {
    --bs-gutter-x: 0.7rem;
    --bs-gutter-y: 0.7rem;
}

.nv-live-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.72rem;
    color: var(--nv-muted);
    border: 1px solid var(--nv-border);
    padding: 0.18rem 0.5rem;
    border-radius: 999px;
}
.nv-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--nv-ok);
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.7);
    animation: pulse 1.8s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55); }
    70% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

.nv-card {
    background: linear-gradient(180deg, rgba(21, 35, 61, 0.9), rgba(17, 28, 49, 0.95));
    border: 1px solid var(--nv-border);
    border-radius: 0.65rem;
    padding: 0.65rem 0.8rem;
    height: auto;
}
.nv-card.nv-card-compact,
.nv-card.nv-toolbar {
    height: auto;
    padding: 0.5rem 0.7rem;
}
.nv-card.nv-card-compact .nv-card-title,
.nv-card.nv-toolbar .nv-card-title {
    margin-bottom: 0.15rem;
}
.nv-card h3, .nv-card .nv-card-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--nv-muted);
    margin: 0 0 0.35rem;
}
.nv-metric {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
}
.nv-metric small { font-size: 0.75rem; color: var(--nv-muted); font-weight: 500; }

.nv-toolbar-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.55rem 0.85rem;
}
.nv-toolbar-name {
    font-size: 0.95rem;
    font-weight: 650;
    line-height: 1.25;
}
.nv-toolbar-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
}
.nv-hint {
    font-size: 0.72rem;
    color: var(--nv-muted);
    line-height: 1.35;
}

.nv-status-up { color: var(--nv-ok); }
.nv-status-down { color: var(--nv-danger); }
.nv-status-degraded { color: var(--nv-warn); }
.nv-health-ok { color: var(--nv-ok); }
.nv-health-warn { color: var(--nv-warn); }
.nv-health-bad { color: var(--nv-danger); }

.table-nv {
    --bs-table-bg: transparent;
    --bs-table-color: var(--nv-text);
    --bs-table-border-color: var(--nv-border);
    --bs-table-striped-bg: rgba(255,255,255,0.02);
    margin-bottom: 0;
}
.table-nv th { color: var(--nv-muted); font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; }
.nv-content .table-sm > :not(caption) > * > * { padding: 0.28rem 0.4rem; }
.nv-content .alert { padding: 0.45rem 0.7rem; font-size: 0.8rem; }

.badge-sev-critical { background: #7f1d1d; }
.badge-sev-high { background: #9a3412; }
.badge-sev-medium { background: #854d0e; }
.badge-sev-low { background: #155e75; }

.nv-card-clickable {
    cursor: pointer;
    transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
    user-select: none;
}
.nv-card-clickable:hover,
.nv-card-clickable:focus-visible {
    border-color: rgba(248, 113, 113, 0.45);
    box-shadow: 0 0 0 1px rgba(248, 113, 113, 0.25), 0 8px 24px rgba(0, 0, 0, 0.25);
    transform: translateY(-1px);
    outline: none;
}
.nv-card-clickable .nv-card-hint {
    color: var(--nv-muted);
    font-size: 0.72rem;
}
.nv-card-clickable:hover .nv-card-hint { color: var(--nv-danger); }

.nv-diag-acc .accordion-item { border-color: var(--nv-border); }
.nv-diag-acc .accordion-button { box-shadow: none; font-size: 0.9rem; }
.nv-diag-acc .accordion-button::after { filter: invert(1) opacity(0.6); }
.nv-diag-acc .accordion-button:not(.collapsed) { color: var(--nv-accent); }

.nv-attack-modal .modal-content {
    background: var(--nv-panel);
    border: 1px solid var(--nv-border);
    color: var(--nv-text);
}
.nv-attack-modal .modal-header,
.nv-attack-modal .modal-footer {
    border-color: var(--nv-border);
}
.nv-attack-modal .btn-close { filter: invert(1); opacity: 0.7; }
.nv-attack-item {
    border: 1px solid var(--nv-border);
    border-radius: 0.5rem;
    padding: 0.6rem 0.75rem;
    background: rgba(255, 255, 255, 0.02);
    margin-bottom: 0.55rem;
}
.nv-attack-item:last-child { margin-bottom: 0; }
.nv-attack-impact {
    margin-top: 0.55rem;
    padding: 0.55rem 0.7rem;
    border-radius: 0.45rem;
    background: rgba(248, 113, 113, 0.08);
    border-left: 3px solid var(--nv-danger);
    font-size: 0.85rem;
}

.progress-nv {
    height: 0.45rem;
    background: rgba(255,255,255,0.06);
    border-radius: 999px;
    overflow: hidden;
}
.progress-nv > span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--nv-accent), var(--nv-accent-2));
}

.btn-nv {
    background: linear-gradient(90deg, var(--nv-accent), var(--nv-accent-2));
    color: #042f2e;
    border: 0;
    font-weight: 600;
}
.btn-nv:hover { filter: brightness(1.05); color: #042f2e; }

.nv-content .btn,
.nv-topbar .btn {
    font-size: 0.78rem;
    padding: 0.22rem 0.55rem;
    line-height: 1.3;
}
.nv-content .btn-sm,
.nv-topbar .btn-sm {
    font-size: 0.74rem;
    padding: 0.16rem 0.45rem;
}

.nv-content .form-control,
.nv-content .form-select,
.nv-topbar .form-select {
    background: var(--nv-panel-2);
    border-color: var(--nv-border);
    color: var(--nv-text);
    min-height: 1.85rem;
    padding: 0.18rem 0.5rem;
    font-size: 0.8rem;
    line-height: 1.3;
}
.nv-content .form-control-sm,
.nv-content .form-select-sm,
.nv-topbar .form-select-sm {
    min-height: 1.7rem;
    padding: 0.12rem 0.42rem;
    font-size: 0.76rem;
}
.nv-content .form-label {
    font-size: 0.72rem;
    margin-bottom: 0.18rem;
    color: var(--nv-muted);
}
.nv-content .form-text {
    font-size: 0.68rem;
    margin-top: 0.15rem;
}
.nv-content .form-check {
    min-height: auto;
    margin-bottom: 0.15rem;
}
.nv-content .form-check-label {
    font-size: 0.78rem;
}
.nv-content .form-check-input {
    width: 0.9rem;
    height: 0.9rem;
    margin-top: 0.15rem;
}
.nv-content .form-control:focus,
.nv-content .form-select:focus,
.nv-topbar .form-select:focus {
    background: var(--nv-panel-2);
    border-color: var(--nv-accent);
    color: var(--nv-text);
    box-shadow: 0 0 0 0.15rem rgba(45, 212, 191, 0.15);
}

.form-control, .form-select {
    background: var(--nv-panel-2);
    border-color: var(--nv-border);
    color: var(--nv-text);
}
.form-control:focus, .form-select:focus {
    background: var(--nv-panel-2);
    border-color: var(--nv-accent);
    color: var(--nv-text);
    box-shadow: 0 0 0 0.2rem rgba(45, 212, 191, 0.15);
}

.nv-dt {
    width: 11.5rem;
    max-width: 42vw;
    padding-top: 0.2rem;
    padding-bottom: 0.2rem;
    font-size: 0.8rem;
}

.nv-login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    background:
        radial-gradient(800px 400px at 20% 0%, rgba(45, 212, 191, 0.18), transparent 60%),
        radial-gradient(700px 400px at 90% 100%, rgba(34, 211, 238, 0.12), transparent 55%),
        var(--nv-bg);
}
.nv-login-card {
    width: min(420px, 100%);
    background: rgba(17, 28, 49, 0.92);
    border: 1px solid var(--nv-border);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 24px 80px rgba(0,0,0,0.45);
}
.nv-login-card h1 {
    font-size: 1.75rem;
    margin: 0;
    color: var(--nv-accent);
}
.spark {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 28px;
}
.spark i {
    display: block;
    width: 3px;
    background: var(--nv-accent-2);
    border-radius: 2px;
    opacity: 0.85;
}

@media (max-width: 991.98px) {
    .nv-sidebar {
        position: fixed;
        left: 0; top: 0;
        transform: translateX(-105%);
        transition: transform 0.2s ease;
    }
    .nv-sidebar.open { transform: translateX(0); }
}