/* PulseGate Unified Design System - Enterprise Dark Theme */
:root {
  --bg-primary: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --border-color: #1e293b;
  --border-focus: #334155;
  --brand-primary: #6366f1;
  --brand-hover: #4f46e5;
  --brand-glow: rgba(99, 102, 241, 0.15);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --status-ok: #10b981;
  --status-warn: #f59e0b;
  --status-error: #ef4444;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

html {
  scrollbar-gutter: stable;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #818cf8;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(9, 13, 22, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  width: 100%;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo img {
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: #ffffff;
  border: 1px solid transparent;
}

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

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-focus);
}

.btn-outline:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.main-content {
  flex: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}

.hero-section {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 9999px;
  background-color: var(--brand-glow);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.hero-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 24px 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 24px 0;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 24px 0;
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.15s ease;
}

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

.card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.status-pill,
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 9999px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.status-ok,
.badge-success,
.status-operational {
  background-color: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-warn,
.badge-warning,
.status-maintenance {
  background-color: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.latency-cell {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #818cf8;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-surface);
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

th {
  background-color: rgba(15, 23, 42, 0.85);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background-color: rgba(30, 41, 59, 0.35);
}

code {
  font-family: var(--font-mono);
  font-size: 13px;
  background-color: rgba(30, 41, 59, 0.6);
  padding: 2px 6px;
  border-radius: 4px;
  color: #e2e8f0;
}

pre {
  background-color: #060910;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: #e2e8f0;
  margin: 16px 0;
}

.section-block {
  margin: 40px 0;
}

.section-heading {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: auto;
  background-color: rgba(9, 13, 22, 0.6);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
}

.footer-contact {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 30px;
  }
}

@media (max-width: 640px) {
  .header-container {
    padding: 0 16px;
  }
  .main-nav {
    display: none;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .container {
    padding: 32px 16px;
  }
  .hero-title {
    font-size: 26px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}