:root {
  --bg: #0b1220;
  --panel: #0f172a;
  --panel-2: #111c33;
  --card: #0b1327;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: rgba(255, 255, 255, 0.1);
  --accent: #13b5ea;
  --good: #34d399;
  --bad: #f87171;
  --warning: #fbbf24;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --radius-2: 18px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  background: radial-gradient(1200px 800px at 20% 10%, rgba(19,181,234,0.15), transparent 50%),
              radial-gradient(900px 600px at 80% 30%, rgba(99,102,241,0.12), transparent 50%),
              var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 56px;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  color: var(--text);
}

.logo {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), rgba(19, 181, 234, 0.35));
  display: grid;
  place-items: center;
  font-size: 16px;
}

.topmeta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pill {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 13px;
  color: var(--muted);
}

.pill.connected {
  border-color: var(--good);
  color: var(--good);
}

.pill.disconnected {
  border-color: var(--bad);
  color: var(--bad);
}

/* Main layout */
.main {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* Sidebar */
.sidebar {
  width: 240px;
  border-right: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(10px);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.navbtn {
  width: 100%;
  text-align: left;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.2s;
}

.navbtn:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.06);
}

.navbtn.active {
  background: rgba(19, 181, 234, 0.12);
  border-color: rgba(19, 181, 234, 0.28);
}

.navicon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  font-size: 11px;
  color: var(--muted);
  word-break: break-all;
}

/* Content */
.content {
  flex: 1;
  padding: 24px;
  overflow: auto;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

/* Cards */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-2);
  padding: 20px;
  background: rgba(11, 19, 39, 0.55);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.card-title {
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.kpi {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  background: rgba(0, 0, 0, 0.15);
}

.kpi-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 24px;
  font-weight: 700;
  font-family: var(--mono);
}

.kpi-value.small {
  font-size: 16px;
}

.kpi-value.xs {
  font-size: 12px;
  word-break: break-all;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(19, 181, 234, 0.15);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn:hover {
  background: rgba(19, 181, 234, 0.25);
  border-color: var(--accent);
}

.btn.danger {
  background: rgba(248, 113, 113, 0.15);
  border-color: rgba(248, 113, 113, 0.3);
}

.btn.danger:hover {
  background: rgba(248, 113, 113, 0.25);
}

.btn.success {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.3);
}

.btn.success:hover {
  background: rgba(52, 211, 153, 0.25);
}

.btn.small {
  padding: 8px 14px;
  font-size: 13px;
}

.btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

/* Login card */
.login-card {
  max-width: 400px;
  margin: 60px auto;
  text-align: center;
}

.login-card .logo-big {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), rgba(19, 181, 234, 0.35));
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  font-size: 28px;
}

.login-card h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.login-card p {
  color: var(--muted);
  margin-bottom: 24px;
}

/* Status badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: rgba(52, 211, 153, 0.2);
  color: var(--good);
}

.badge-warning {
  background: rgba(251, 191, 36, 0.2);
  color: var(--warning);
}

.badge-danger {
  background: rgba(248, 113, 113, 0.2);
  color: var(--bad);
}

.badge-info {
  background: rgba(19, 181, 234, 0.2);
  color: var(--accent);
}

/* Code blocks */
pre {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  word-break: break-all;
  white-space: pre-wrap;
}

code {
  font-family: var(--mono);
  background: rgba(0, 0, 0, 0.2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

/* Alerts */
.alert {
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 16px;
}

.alert-info {
  background: rgba(19, 181, 234, 0.1);
  border: 1px solid rgba(19, 181, 234, 0.3);
}

.alert-success {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.alert-error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--bad);
}

/* Utility */
.text-muted {
  color: var(--muted);
}

.text-good {
  color: var(--good);
}

.text-bad {
  color: var(--bad);
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.flex { display: flex; }
.gap-2 { gap: 12px; }
.flex-wrap { flex-wrap: wrap; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 60px;
    padding: 10px;
  }
  
  .navbtn span:not(.navicon) {
    display: none;
  }
  
  .sidebar-footer {
    display: none;
  }
  
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}