:root {
  --color-bg: #ffffff;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-bar-bg: #e5e7eb;
  --color-card-bg: #f9fafb;
  --color-border: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #111827;
    --color-text: #f9fafb;
    --color-text-muted: #9ca3af;
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-danger: #f87171;
    --color-bar-bg: #374151;
    --color-card-bg: #1f2937;
    --color-border: #374151;
  }
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
}

.main {
  width: 100%;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  flex-shrink: 0;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  padding: 6px 16px;
  min-width: 60px;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  background: var(--color-primary);
  color: white;
  cursor: pointer;
  transition: background 0.15s ease;
}

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

.btn.active {
  background: var(--color-danger);
}

.btn.active:hover {
  background: #dc2626;
}

.status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.status-text {
  min-width: 8ch;
  font-family: ui-monospace, monospace;
  text-align: right;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-muted);
}

.status-indicator.polling {
  background: var(--color-success);
  animation: pulse 1.5s infinite;
}

.status-indicator.error {
  background: var(--color-danger);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Section titles */
.section-title {
  margin: 0 0 8px 0;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

/* Chart section */
.chart-section {
  background: var(--color-card-bg);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid var(--color-border);
}

.chart-container {
  position: relative;
  height: 200px;
}

/* Memory section */
.memory-section {
  background: var(--color-card-bg);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid var(--color-border);
}

.memory-bar-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.memory-bar {
  flex: 1;
  height: 20px;
  background: var(--color-bar-bg);
  border-radius: 10px;
  overflow: hidden;
}

.memory-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--color-success);
  border-radius: 10px;
  transition: width 0.3s ease, background 0.3s ease;
}

.memory-bar-fill.warning {
  background: var(--color-warning);
}

.memory-bar-fill.danger {
  background: var(--color-danger);
}

.memory-percent {
  font-size: 1.25rem;
  font-weight: 600;
  min-width: 50px;
  text-align: right;
}

.memory-detail {
  margin-top: 4px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Info section */
.info-section {
  background: var(--color-card-bg);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid var(--color-border);
}

.info-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.info-item dt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.info-item dd {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
}