:root {
  --bg: #0f1117;
  --card: #1a1d28;
  --border: #2a2e3c;
  --text: #e4e6eb;
  --muted: #8b8fa3;
  --accent: #58a6ff;
  --green: #3fb950;
  --yellow: #d29922;
  --red: #f85149;
  --purple: #bc8cff;
  --chart-grid: rgba(255,255,255,0.05);
  --chart-ticks: #8b8fa3;
}

[data-theme="light"] {
  --bg: #f6f8fa;
  --card: #ffffff;
  --border: #d0d7de;
  --text: #1f2328;
  --muted: #656d76;
  --accent: #0969da;
  --green: #1a7f37;
  --yellow: #9a6700;
  --red: #cf222e;
  --purple: #8250df;
  --chart-grid: rgba(0,0,0,0.08);
  --chart-ticks: #656d76;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 4px;
}

.header-row h1 {
  margin-bottom: 0;
}

.theme-toggle {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text);
  transition: border-color 0.2s, transform 0.15s;
  line-height: 1;
}
.theme-toggle:hover {
  border-color: var(--accent);
  transform: translateY(-50%) scale(1.08);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  padding: 24px;
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 4px;
  text-align: center;
}

.subtitle {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 24px;
  text-align: center;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 6px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 700px;
  margin: 0 auto;
}

.vps-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 1500px;
  margin: 0 auto;
}

.vps-column {
  min-width: 0;
}

.vps-column.offline {
  opacity: 0.5;
}

.vps-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.vps-name {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.vps-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.vps-badge.online {
  background: rgba(63, 185, 80, 0.15);
  color: var(--green);
  border: 1px solid var(--green);
}

.vps-badge.offline {
  background: rgba(248, 81, 73, 0.15);
  color: var(--red);
  border: 1px solid var(--red);
}

.vps-badge.waiting {
  background: rgba(210, 153, 34, 0.15);
  color: var(--yellow);
  border: 1px solid var(--yellow);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.card.critical {
  background: #4a1525;
  border-color: #8b1538;
}

[data-theme="light"] .card.critical {
  background: #f8d7da;
  border-color: #c2185b;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}

.card-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
}

.card-value {
  font-size: 1.8rem;
  font-weight: 700;
}

.card-detail {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 4px;
}

.chart-container {
  height: 100px;
  position: relative;
}

@media (max-width: 900px) {
  .vps-columns { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
}