:root {
  --bg-main: #09090b;
  --bg-card: #121215;
  --bg-card-hover: #18181b;
  --border-card: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.4);
  --text-main: #f4f4f5;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;

  /* Pelican Panel Primary Brand Highlights (Sky / Blue) */
  --color-primary: #38bdf8;
  --color-primary-hover: #7dd3fc;
  --color-primary-bg: rgba(56, 189, 248, 0.12);
  --color-primary-border: rgba(56, 189, 248, 0.25);

  /* Semantic Health Status Colors (Pelican Sky Blue #38bdf8) */
  --color-operational: #38bdf8;
  --color-operational-bg: rgba(56, 189, 248, 0.12);
  --color-operational-border: rgba(56, 189, 248, 0.25);
  --color-degraded: #f59e0b;
  --color-degraded-bg: rgba(245, 158, 11, 0.12);
  --color-degraded-border: rgba(245, 158, 11, 0.25);
  --color-outage: #ef4444;
  --color-outage-bg: rgba(239, 68, 68, 0.12);
  --color-outage-border: rgba(239, 68, 68, 0.25);
  --color-maintenance: #3b82f6;
  --color-maintenance-bg: rgba(59, 130, 246, 0.12);
  --color-maintenance-border: rgba(59, 130, 246, 0.25);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(ellipse at top, rgba(56, 189, 248, 0.05) 0%, transparent 60%),
    radial-gradient(circle at bottom, rgba(24, 24, 27, 0.5) 0%, transparent 80%);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-card);
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  height: 38px;
  width: auto;
  display: block;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-refresh {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  font-size: 0.825rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-refresh:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.15);
}

.refresh-spin {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Hero Status Banner */
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
}

.hero-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--status-color, var(--color-operational));
}

.hero-left {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.status-indicator-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--status-bg, var(--color-operational-bg));
  border: 1px solid var(--status-border, var(--color-operational-border));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--status-color, var(--color-operational));
  flex-shrink: 0;
  position: relative;
}

.status-pulse {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--status-color, var(--color-operational));
  opacity: 0.15;
  animation: pulse 2.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.15; }
  50% { transform: scale(1.35); opacity: 0; }
}

.hero-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.hero-updated {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: right;
}

/* Card Sections */
.section {
  margin-bottom: 2.25rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #f4f4f5;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title svg {
  color: var(--color-primary);
}

.section-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* 90-Day Uptime Visualizer (Pulsetic Style) */
.uptime-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.uptime-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.uptime-name-wrap {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.uptime-name {
  font-size: 0.975rem;
  font-weight: 600;
  color: #fff;
}

.uptime-badge {
  font-size: 0.725rem;
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
  font-weight: 500;
}

.uptime-pct {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.uptime-bar-container {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 32px;
  width: 100%;
}

.uptime-tick {
  flex: 1;
  height: 100%;
  border-radius: 3px;
  background-color: rgba(255, 255, 255, 0.08);
  transition: transform 0.15s ease, opacity 0.15s ease, background-color 0.15s ease;
  cursor: pointer;
  position: relative;
}

.uptime-tick:hover {
  transform: scaleY(1.15);
  opacity: 0.85;
}

.uptime-tick.operational {
  background-color: var(--color-operational);
}

.uptime-tick.outage {
  background-color: var(--color-outage);
}

.uptime-tick.degraded {
  background-color: var(--color-degraded);
}

.uptime-tick.no_data,
.uptime-tick.muted {
  background-color: rgba(255, 255, 255, 0.08);
}

/* Hourly 24h Breakdown Styles */
.hourly-bar-container {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 36px;
  width: 100%;
}

.hourly-tick {
  flex: 1;
  height: 100%;
  border-radius: 4px;
  background-color: rgba(255, 255, 255, 0.08);
  transition: transform 0.15s ease, opacity 0.15s ease, background-color 0.15s ease;
  cursor: pointer;
}

.hourly-tick:hover {
  transform: scaleY(1.15);
  opacity: 0.85;
}

.hourly-tick.operational {
  background-color: var(--color-operational);
}

.hourly-tick.outage {
  background-color: var(--color-outage);
}

.hourly-tick.degraded {
  background-color: var(--color-degraded);
}

.hourly-tick.no_data,
.hourly-tick.muted {
  background-color: rgba(255, 255, 255, 0.08);
}

.uptime-legend {
  display: flex;
  justify-content: space-between;
  margin-top: 0.6rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Cluster Metrics Grid (Mode A) */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.775rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.metric-value {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.metric-desc {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* Nodes Table (Cluster Mode) */
.table-wrap {
  overflow-x: auto;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.custom-table th {
  padding: 0.8rem 1rem;
  color: var(--text-dim);
  font-weight: 500;
  border-bottom: 1px solid var(--border-card);
  text-transform: uppercase;
  font-size: 0.725rem;
  letter-spacing: 0.05em;
}

.custom-table td {
  padding: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  vertical-align: middle;
}

.custom-table tr:last-child td {
  border-bottom: none;
}

/* Badges */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: capitalize;
}

.status-pill.operational {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}

.status-pill.degraded,
.status-pill.starting {
  background: var(--color-degraded-bg);
  color: var(--color-degraded);
  border: 1px solid var(--color-degraded-border);
}

.status-pill.outage,
.status-pill.offline {
  background: var(--color-outage-bg);
  color: var(--color-outage);
  border: 1px solid var(--color-outage-border);
}

.status-pill.maintenance {
  background: var(--color-maintenance-bg);
  color: var(--color-maintenance);
  border: 1px solid var(--color-maintenance-border);
}

.status-pill.timeline {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}

.status-pill.timeline .pill-dot {
  background-color: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

/* Single Server Card (Mode B) */
.server-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.server-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.server-meta-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.server-meta-sub {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.address-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 0.85rem 1.15rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.address-val {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.95rem;
  color: var(--color-primary);
  font-weight: 600;
}

.btn-copy {
  background: transparent;
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-copy:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-color: var(--color-primary-border);
}

/* Incidents Section */
.incidents-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted);
}

.incidents-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.incidents-empty svg {
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

/* Tooltip */
#tooltip {
  position: absolute;
  display: none;
  background: #18181b;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-size: 0.75rem;
  color: #fff;
  pointer-events: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  z-index: 100;
  white-space: nowrap;
}

/* Footer */
.footer {
  margin-top: 3.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.footer a:hover {
  color: var(--color-primary);
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.04) 25%, rgba(255, 255, 255, 0.08) 50%, rgba(255, 255, 255, 0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@media (max-width: 640px) {
  .hero-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .hero-updated {
    text-align: left;
  }
  .uptime-bar-container {
    gap: 2px;
  }
}