:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #1877f2;
  --success: #3fb950;
  --warning: #d29922;
  --danger: #f85149;
  --sidebar-w: 220px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* ─── SIDEBAR ─────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}
.sidebar-brand i { font-size: 20px; }

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  border-radius: 6px;
  margin: 2px 8px;
  transition: all .15s;
  position: relative;
}
.sidebar-nav .nav-link:hover { background: var(--bg3); color: var(--text); }
.sidebar-nav .nav-link.active { background: rgba(24,119,242,.15); color: var(--accent); }

.badge-count {
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
  margin-left: auto;
  display: none;
}

.sidebar-footer {
  padding: 12px 0;
  border-top: 1px solid var(--border);
}

/* ─── MAIN ────────────────────────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.content-area {
  padding: 24px;
  flex: 1;
}

/* ─── CARDS ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.card-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-body { padding: 16px 18px; }

/* ─── KPI CARDS ───────────────────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.kpi-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.kpi-card .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
  margin-bottom: 6px;
}
.kpi-card .value {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.kpi-card .sub { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ─── TABLES ──────────────────────────────────────────────────────────────── */
.table { color: var(--text); margin: 0; }
.table th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
  border-color: var(--border);
  padding: 10px 14px;
  background: var(--bg2);
}
.table td {
  border-color: var(--border);
  padding: 10px 14px;
  font-size: 13px;
  vertical-align: middle;
}
.table tbody tr:hover { background: var(--bg3); }
.table-responsive { overflow-x: auto; }

/* ─── BADGES ──────────────────────────────────────────────────────────────── */
.badge-warn { background: rgba(210,153,34,.15); color: var(--warning); border: 1px solid rgba(210,153,34,.3); border-radius: 4px; padding: 2px 7px; font-size: 11px; font-weight: 600; }
.badge-crit { background: rgba(248,81,73,.15); color: var(--danger); border: 1px solid rgba(248,81,73,.3); border-radius: 4px; padding: 2px 7px; font-size: 11px; font-weight: 600; }
.badge-ok   { background: rgba(63,185,80,.15); color: var(--success); border: 1px solid rgba(63,185,80,.3); border-radius: 4px; padding: 2px 7px; font-size: 11px; font-weight: 600; }
.badge-info { background: rgba(24,119,242,.15); color: var(--accent); border: 1px solid rgba(24,119,242,.3); border-radius: 4px; padding: 2px 7px; font-size: 11px; font-weight: 600; }

/* ─── STATUS ──────────────────────────────────────────────────────────────── */
.status-active { color: var(--success); }
.status-paused { color: var(--warning); }

/* ─── SIGNALS ─────────────────────────────────────────────────────────────── */
.signal-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 10px;
  background: var(--bg3);
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.signal-item.accepted { opacity: .5; }
.signal-item.rejected { opacity: .4; text-decoration: line-through; }
.signal-icon { font-size: 20px; margin-top: 2px; flex-shrink: 0; }
.signal-body { flex: 1; }
.signal-title { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.signal-desc { font-size: 13px; color: var(--muted); }
.signal-meta { font-size: 11px; color: var(--muted); margin-top: 6px; }
.signal-actions { display: flex; gap: 8px; flex-shrink: 0; }

/* ─── ALERT ITEMS ─────────────────────────────────────────────────────────── */
.alert-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.alert-item:last-child { border-bottom: none; }

/* ─── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn-primary { background: var(--accent); border-color: var(--accent); }
.btn-primary:hover { background: #1565c0; border-color: #1565c0; }
.btn-outline-primary { color: var(--accent); border-color: var(--accent); }
.btn-outline-primary:hover { background: var(--accent); }

/* ─── FORMS ───────────────────────────────────────────────────────────────── */
.form-control, .form-select {
  background: var(--bg3);
  border-color: var(--border);
  color: var(--text);
}
.form-control:focus, .form-select:focus {
  background: var(--bg3);
  border-color: var(--accent);
  color: var(--text);
  box-shadow: 0 0 0 3px rgba(24,119,242,.15);
}
.form-label { font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-text { color: var(--muted); }

/* ─── CONNECT PAGE ────────────────────────────────────────────────────────── */
.connect-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.connect-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 48px 40px;
  text-align: center;
  max-width: 420px;
  width: 100%;
}
.connect-icon { font-size: 48px; color: var(--accent); margin-bottom: 16px; }
.connect-box h2 { font-size: 22px; margin-bottom: 8px; }
.connect-box p { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.btn-fb {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background .15s;
}
.btn-fb:hover { background: #1565c0; color: #fff; }

/* ─── ACTIVITY ────────────────────────────────────────────────────────────── */
.act-item {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.act-item:last-child { border-bottom: none; }
.act-icon { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 14px; }
.act-ok   { background: rgba(63,185,80,.15); color: var(--success); }
.act-err  { background: rgba(248,81,73,.15); color: var(--danger); }
.act-info { background: rgba(24,119,242,.15); color: var(--accent); }

/* ─── CHARTS ──────────────────────────────────────────────────────────────── */
.chart-wrap { position: relative; height: 200px; }

/* ─── MODAL ───────────────────────────────────────────────────────────────── */
.modal-content { background: var(--bg2); border: 1px solid var(--border); }
.modal-header { border-color: var(--border); }

/* ─── MISC ────────────────────────────────────────────────────────────────── */
.spin { animation: spin .6s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.text-muted { color: var(--muted) !important; }
.border-secondary { border-color: var(--border) !important; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-brand span, .sidebar-nav .nav-link span { display: none; }
  .main-content { margin-left: 60px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}