/* Synton WebRTC SFU & Real-Time Media Engine Unified Design System */
:root {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-surface: #1e293b;
  --bg-surface-hover: #334155;
  --border-color: #334155;
  --border-subtle: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --brand-primary: #0ea5e9;
  --brand-hover: #38bdf8;
  --brand-glow: rgba(14, 165, 233, 0.25);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}

html {
  scrollbar-gutter: stable;
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header Styles */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  max-width: 1200px;
  height: 64px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.brand-logo img {
  height: 32px;
  width: auto;
  display: block;
}

.main-nav, nav.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.main-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s ease;
  white-space: nowrap;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--brand-hover);
  border-color: var(--brand-hover);
  box-shadow: 0 0 16px var(--brand-glow);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--text-muted);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
  border-radius: 4px;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
  width: 100%;
}

.hero {
  padding: 48px 0 36px;
  text-align: center;
}

.hero h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.hero p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 28px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin: 32px 0;
}

.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 22px;
  transition: border-color 0.2s ease;
}

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

.card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 10px;
}

.card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.callout {
  background: rgba(14, 165, 233, 0.08);
  border-left: 4px solid var(--brand-primary);
  padding: 18px 20px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
}

.callout h4 {
  margin: 0 0 8px 0;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
}

.callout p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

/* Status Badges */
.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-pill::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-right: 6px;
}

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

.status-ok::before, .status-operational::before, .badge-success::before {
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
}

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

.status-warn::before, .status-maintenance::before, .badge-warning::before {
  background: #f59e0b;
}

.status-danger, .badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-danger::before, .badge-danger::before {
  background: #ef4444;
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 20px 0;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

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

th {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

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

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Code & Pre */
pre, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
}

code {
  background: rgba(14, 165, 233, 0.12);
  color: var(--brand-hover);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  color: #e2e8f0;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* Footer Styles */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: auto;
  background-color: var(--bg-secondary);
}

.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);
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .hero h1 { font-size: 30px; }
  .hero p { font-size: 15px; }
  .header-container {
    height: auto;
    min-height: 64px;
    padding: 12px 16px;
    flex-wrap: wrap;
  }
  .main-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding: 8px 0 4px;
    gap: 14px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 26px; }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}