:root {
    --bg-main: #0b0f19;
    --bg-card: #111827;
    --bg-card-hover: #1f2937;
    --border: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(17, 24, 39, 0.95);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
    flex-wrap: wrap;
    gap: 1rem;
}
.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.brand-badge {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    width: 38px;
    height: 38px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
}
.brand-sub {
    font-size: 0.74rem;
    color: var(--text-secondary);
    font-weight: 400;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}
.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
}
.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 2rem;
}
.hero-banner {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.45), rgba(17, 24, 39, 0.95));
    border: 1px solid rgba(59, 130, 246, 0.35);
    border-radius: 14px;
    padding: 1.75rem 2rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}
.hero-title {
    font-size: 1.45rem;
    font-weight: 800;
    margin-bottom: 0.35rem;
}
.hero-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    max-width: 680px;
}
.hero-buttons {
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
}
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}
.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
}
.kpi-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.kpi-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 0.3rem;
}
.kpi-value-online {
    color: var(--success);
}
.kpi-value-key {
    font-size: 1.15rem;
    margin-top: 0.65rem;
    color: #60a5fa;
}
.kpi-sub {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}
.grid-2 {
    display: grid;
    grid-template-columns: 1.85fr 1.15fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}
@media (max-width: 980px) {
    .grid-2 { grid-template-columns: 1fr; }
}
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 0.75rem;
}
.card-title {
    font-size: 1.05rem;
    font-weight: 700;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.55rem 1.1rem;
    border-radius: 8px;
    font-size: 0.86rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
    text-decoration: none;
    color: white;
    background: var(--accent);
}
.btn:hover { background: var(--accent-hover); }
.btn-secondary {
    background: var(--bg-card-hover);
    border-color: var(--border);
    color: var(--text-primary);
}
.btn-secondary:hover { background: #374151; }
.btn-success { background: var(--success); }
.btn-success:hover { background: #059669; }
.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.25); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.78rem; }
.config-box {
    background: #070a12;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}
.config-label {
    font-size: 0.74rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.15rem;
}
.config-val {
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 0.84rem;
    color: #60a5fa;
    word-break: break-all;
}
.config-val-cmd {
    color: #34d399;
}
.table-wrap {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}
th, td {
    text-align: left;
    padding: 0.85rem 0.75rem;
    border-bottom: 1px solid var(--border);
}
th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.76rem;
    text-transform: uppercase;
}
.badge-online {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-offline {
    background: rgba(148, 163, 184, 0.15);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 0.75rem;
    margin-top: 1.1rem;
    padding-top: 1.1rem;
    border-top: 1px solid var(--border);
}
input {
    background: #070a12;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    font-size: 0.85rem;
    width: 100%;
}
input:focus {
    outline: none;
    border-color: var(--accent);
}
.search-box {
    max-width: 240px;
}
.tier-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 0.75rem;
}
.tier-card {
    background: #070a12;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.1rem;
}
.tier-card-active {
    border-color: var(--accent);
}
.tier-name {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}
.tier-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    background: #1e293b;
    border: 1px solid var(--accent);
    color: var(--text-primary);
    padding: 0.85rem 1.25rem;
    border-radius: 10px;
    font-size: 0.88rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    display: none;
    z-index: 50;
}
.hidden { display: none; }