/* style.css - ServerPulse Dark Theme */
/* [TASK-SP-004/005] Polish + responsive */

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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #21262d;
  --border-color: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent-green: #3fb950;
  --accent-yellow: #d29922;
  --accent-red: #f85149;
  --accent-blue: #58a6ff;
  --accent-purple: #a371f7;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

/* Server Card */
.server-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.server-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.server-card.offline {
  opacity: 0.5;
  border-color: var(--accent-red);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.server-name {
  font-size: 1.4rem;
  font-weight: 600;
}

.server-role {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s infinite;
}

.status-dot.online {
  background: var(--accent-green);
  animation: pulse 2s infinite;
}

.status-dot.warning {
  background: var(--accent-yellow);
  animation: none;
}

.status-dot.offline {
  background: var(--accent-red);
  animation: pulse 2s infinite;
}

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

.server-info {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.info-item {
  background: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: 4px;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.metric-item {
  background: var(--bg-secondary);
  padding: 12px;
  border-radius: 8px;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 600;
}

.metric-value.high {
  color: var(--accent-red);
}

.metric-value.medium {
  color: var(--accent-yellow);
}

.metric-value.low {
  color: var(--accent-green);
}

/* Progress Bar */
.progress-bar {
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  margin-top: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.progress-fill.low {
  background: var(--accent-green);
}

.progress-fill.medium {
  background: var(--accent-yellow);
}

.progress-fill.high {
  background: var(--accent-red);
}

/* Services */
.services {
  margin-bottom: 16px;
}

.services-title {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.services-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.service-tag {
  background: var(--bg-secondary);
  color: var(--accent-blue);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  border: 1px solid var(--border-color);
}

/* Mini Chart */
.mini-chart {
  margin-top: 16px;
}

.chart-title {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.chart-canvas {
  width: 100%;
  height: 60px;
  background: var(--bg-secondary);
  border-radius: 8px;
}

/* Footer */
footer {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: flex;
  justify-content: center;
  gap: 30px;
}

#footer-summary {
  font-weight: 500;
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: 15px;
  }

  main {
    grid-template-columns: 1fr;
  }

  header h1 {
    font-size: 1.4rem;
  }

  .server-card {
    min-width: 0;
  }

  footer {
    flex-direction: column;
    gap: 10px;
  }
}