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

:root {
  --bg-primary: #0b1220;
  --bg-secondary: #111a2e;
  --glass-bg: rgba(17, 26, 46, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --accent-cyan: #00d4ff;
  --accent-blue: #0070f3;
  --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #0070f3 50%, #5a67d8 100%);
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --success: #48bb78;
  --error: #f56565;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(11, 18, 32, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  padding: 1rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding-top: 100px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  font-weight: 800;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Status Cards */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 4rem 0;
}

.card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow);
  border-color: var(--accent-cyan);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Node Cards */
.node-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.node-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.online { color: var(--success); }
.offline { color: var(--error); }

/* Chart Container */
.chart-container {
  height: 400px;
  background: var(--glass-bg);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--glass-border);
}

/* Buttons */
.btn {
  background: var(--accent-gradient);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .status-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .node-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.6s ease forwards;
}

.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }

/* Status Indicators */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
}

.status-online {
  background: rgba(72, 187, 120, 0.2);
  color: var(--success);
}

.status-offline {
  background: rgba(245, 101, 101, 0.2);
  color: var(--error);
}