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

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2333;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --green: #3fb950;
  --green-bg: rgba(63, 185, 80, 0.1);
  --red: #f85149;
  --red-bg: rgba(248, 81, 73, 0.1);
  --blue: #58a6ff;
  --yellow: #d29922;
  --purple: #bc8cff;
}

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

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

header h1 {
  font-size: 1.8em;
  font-weight: 700;
}

.subtitle {
  color: var(--text-dim);
  font-size: 0.9em;
  margin-left: 8px;
}

.header-right {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}

.refresh-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

#last-update {
  color: var(--text-dim);
  font-size: 0.85em;
}

#refresh-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85em;
  transition: all 0.2s;
}

#refresh-btn:hover {
  background: var(--border);
}

#refresh-btn.spinning {
  animation: spin 0.6s linear;
}

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

.auto-refresh {
  color: var(--text-dim);
  font-size: 0.8em;
}

.badge-on {
  background: var(--green-bg);
  color: var(--green);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.85em;
  font-weight: 600;
}

/* Summary Bar */
.summary-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.summary-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 24px;
  flex: 1;
  min-width: 120px;
  text-align: center;
}

.summary-label {
  display: block;
  color: var(--text-dim);
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.summary-value {
  font-size: 1.6em;
  font-weight: 700;
}

.text-up { color: var(--green); }
.text-down { color: var(--red); }

/* Server Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 16px;
}

.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px;
  color: var(--text-dim);
  font-size: 1.2em;
}

/* Server Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--blue);
}

.card.star {
  border-color: var(--yellow);
}

.card.star::before {
  content: '⭐';
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 1.1em;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.status-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.up {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.status-dot.down {
  background: var(--red);
  box-shadow: 0 0 8px var(--red);
}

.status-dot.unknown {
  background: var(--text-dim);
}

.card-name {
  font-size: 1.2em;
  font-weight: 700;
}

.card-status {
  margin-left: auto;
  font-size: 0.85em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-status.up { color: var(--green); }
.card-status.down { color: var(--red); }
.card-status.unknown { color: var(--text-dim); }

/* Proxy Route */
.proxy-route {
  background: var(--surface2);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85em;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.route-ip {
  color: var(--blue);
  font-weight: 600;
}

.route-arrow {
  color: var(--text-dim);
}

.route-backend {
  color: var(--purple);
  font-weight: 600;
}

.route-label {
  color: var(--yellow);
  font-size: 0.9em;
}

.route-location {
  margin-left: auto;
  color: var(--text-dim);
  font-size: 0.9em;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Stats Row */
.stats-row {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.stat {
  flex: 1;
  min-width: 60px;
  text-align: center;
}

.stat-label {
  display: block;
  color: var(--text-dim);
  font-size: 0.7em;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.stat-value {
  font-size: 1.05em;
  font-weight: 600;
}

.stat-value.good { color: var(--green); }
.stat-value.warn { color: var(--yellow); }
.stat-value.bad { color: var(--red); }

/* Chart */
.chart-container {
  height: 60px;
  margin-bottom: 10px;
  position: relative;
}

.chart-canvas {
  width: 100%;
  height: 100%;
}

.chart-label {
  font-size: 0.7em;
  color: var(--text-dim);
  text-align: center;
}

/* Last Check */
.last-check {
  color: var(--text-dim);
  font-size: 0.78em;
  text-align: right;
  margin-top: 8px;
}

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

@media (max-width: 600px) {
  .container {
    padding: 12px;
  }
  
  header h1 {
    font-size: 1.3em;
  }
  
  .summary-bar {
    gap: 8px;
  }
  
  .summary-item {
    padding: 10px 14px;
    min-width: 70px;
  }
  
  .summary-value {
    font-size: 1.2em;
  }

  .card {
    padding: 14px;
  }

  .proxy-route {
    font-size: 0.78em;
  }

  .route-location {
    margin-left: 0;
    width: 100%;
  }
}