:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border: #334155;
  --green: #22c55e;
  --green-bg: rgba(34,197,94,0.12);
  --yellow: #eab308;
  --yellow-bg: rgba(234,179,8,0.12);
  --red: #ef4444;
  --red-bg: rgba(239,68,68,0.12);
  --blue: #3b82f6;
  --blue-bg: rgba(59,130,246,0.12);
  --purple: #a855f7;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* Header */
header {
  padding: 24px 0 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.header-content { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--text); }
.logo h1 { font-size: 1.25rem; font-weight: 600; }
.meta-text { color: var(--text-dim); font-size: 0.8rem; }

/* Report date */
.report-date { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 16px; }

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 4px;
  border: 1px solid var(--border);
}
.tab {
  flex: 1;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.2s;
}
.tab:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.tab.active { color: var(--text); background: var(--bg); box-shadow: 0 1px 3px rgba(0,0,0,0.3); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 12px;
}

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 18px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
}
.service-card:hover { border-color: var(--text-dim); transform: translateY(-1px); }
.service-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.service-name { font-weight: 600; font-size: 0.95rem; }
.service-tier {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.tier-critical { background: var(--red-bg); color: var(--red); }
.tier-high { background: var(--yellow-bg); color: var(--yellow); }
.tier-medium { background: var(--blue-bg); color: var(--blue); }
.tier-low { background: rgba(148,163,184,0.12); color: var(--text-muted); }

.service-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.metric { padding: 8px 10px; background: rgba(255,255,255,0.03); border-radius: 6px; }
.metric-label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.3px; }
.metric-value { font-size: 1.1rem; font-weight: 600; font-variant-numeric: tabular-nums; }

.service-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--border); }

/* Status badge */
.status { display: inline-flex; align-items: center; gap: 6px; font-size: 0.8rem; font-weight: 500; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; }
.status-met .status-dot { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-at-risk .status-dot { background: var(--yellow); box-shadow: 0 0 6px var(--yellow); }
.status-breached .status-dot { background: var(--red); box-shadow: 0 0 6px var(--red); }
.status-met { color: var(--green); }
.status-at-risk { color: var(--yellow); }
.status-breached { color: var(--red); }

/* Error budget bar */
.budget-bar-container { margin-top: 10px; }
.budget-bar-label { display: flex; justify-content: space-between; font-size: 0.7rem; color: var(--text-dim); margin-bottom: 4px; }
.budget-bar { height: 4px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.budget-bar-fill { height: 100%; border-radius: 2px; transition: width 0.5s; }
.budget-ok .budget-bar-fill { background: var(--green); }
.budget-warn .budget-bar-fill { background: var(--yellow); }
.budget-danger .budget-bar-fill { background: var(--red); }

/* Trend */
.trend { font-size: 0.8rem; }
.trend-improving { color: var(--green); }
.trend-stable { color: var(--text-muted); }
.trend-degrading { color: var(--red); }

/* Groups - Compact collapsible rows */
.group-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.group-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; cursor: pointer; transition: background 0.15s;
}
.group-row:hover { background: rgba(255,255,255,0.03); }
.group-row-left { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.group-row-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.group-chevron { color: var(--text-dim); font-size: 0.7rem; width: 14px; transition: transform 0.2s; }
.group-name { font-weight: 600; font-size: 1rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sla-tier-label { font-size: 0.7rem; color: var(--text-dim); background: rgba(255,255,255,0.05); padding: 2px 8px; border-radius: 4px; white-space: nowrap; }
.group-svc-count { font-size: 0.75rem; color: var(--text-dim); white-space: nowrap; }
.group-uptime-inline { font-weight: 700; font-size: 1.1rem; font-variant-numeric: tabular-nums; }
.group-downtime-inline { font-size: 0.75rem; color: var(--text-dim); white-space: nowrap; }

.group-detail { padding: 0 18px 14px; border-top: 1px solid var(--border); }

.group-services { display: flex; flex-direction: column; gap: 4px; }
.group-service-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; background: rgba(255,255,255,0.03); border-radius: 8px;
  cursor: pointer; transition: background 0.15s;
}
.group-service-row:hover { background: rgba(255,255,255,0.06); }
.group-svc-left { display: flex; align-items: center; gap: 8px; }
.group-svc-name { font-size: 0.9rem; font-weight: 500; }
.group-svc-right { text-align: right; }
.group-svc-uptime { font-weight: 600; font-variant-numeric: tabular-nums; font-size: 0.95rem; display: block; }
.group-svc-downtime { font-size: 0.7rem; color: var(--text-dim); }
.maint-badge { font-size: 0.6rem; background: var(--blue-bg); color: var(--blue); padding: 1px 6px; border-radius: 3px; font-weight: 600; }
.card-total .card-number { color: var(--text-muted); }

/* History */
.history-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.history-header h3 { font-size: 1rem; font-weight: 600; }
.select-field {
  background: var(--bg-card); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 12px; font-size: 0.85rem;
}

.history-chart {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  min-height: 200px;
  display: flex;
  align-items: flex-end;
  gap: 2px;
}
.chart-bar {
  flex: 1;
  min-width: 4px;
  border-radius: 2px 2px 0 0;
  transition: all 0.2s;
  cursor: pointer;
  position: relative;
}
.chart-bar:hover { opacity: 0.8; }
.chart-bar.met { background: var(--green); }
.chart-bar.at-risk { background: var(--yellow); }
.chart-bar.breached { background: var(--red); }
.chart-bar .chart-tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}
.chart-bar:hover .chart-tooltip { display: block; }

.history-table {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}
.history-row {
  display: grid;
  grid-template-columns: 120px 1fr 100px 80px 100px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  align-items: center;
}
.history-row:last-child { border-bottom: none; }
.history-row.header { font-weight: 600; color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); }
.modal-content {
  position: relative; background: var(--bg-card); border-radius: var(--radius);
  padding: 28px; width: 90%; max-width: 700px; max-height: 85vh; overflow-y: auto;
  border: 1px solid var(--border); box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-close {
  position: absolute; top: 12px; right: 16px; background: none; border: none;
  color: var(--text-muted); font-size: 1.5rem; cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--text); }

.detail-header { margin-bottom: 20px; }
.detail-name { font-size: 1.3rem; font-weight: 700; margin-bottom: 4px; }
.detail-meta { color: var(--text-muted); font-size: 0.85rem; }

.detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 20px; }
.detail-stat {
  background: rgba(255,255,255,0.03); border-radius: var(--radius-sm);
  padding: 14px; border: 1px solid var(--border);
}
.detail-stat-label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.detail-stat-value { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }

.detail-section-title { font-size: 0.85rem; font-weight: 600; margin: 16px 0 10px; color: var(--text-muted); }

.mini-chart { display: flex; align-items: flex-end; gap: 1px; height: 60px; margin-top: 16px; }
.mini-bar { flex: 1; min-width: 3px; border-radius: 1px 1px 0 0; }

/* Empty state */
.empty-state { padding: 40px; text-align: center; color: var(--text-dim); }
.empty-state-full { text-align: center; padding: 80px 20px; }
.empty-state-full h2 { margin: 16px 0 8px; color: var(--text-muted); }
.empty-state-full p { color: var(--text-dim); }

/* Responsive */
@media (max-width: 768px) {
  .summary-cards { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .history-row { grid-template-columns: 100px 1fr 80px; }
  .history-row > :nth-child(4), .history-row > :nth-child(5) { display: none; }
  .banner-uptime { font-size: 1.5rem; }
}