/**
 * P31 Technical Hub — portable skin for static HTML + external Pages (e.g. p31-mesh).
 * Load after Inter + Space Mono. Matches Astro hub (index.astro).
 *
 * <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&family=Space+Mono:wght@400;700&display=swap">
 * <link rel="stylesheet" href="/assets/hub-skin.css">
 */
:root {
  --hub-void: #050505;
  --hub-nav: #080810;
  --hub-rose: #e8636f;
  --hub-coral: #cc6247;
  --hub-phosphor: #00ff88;
  --hub-amber: #fbbf24;
  --hub-emerald: #34d399;
  --hub-cyan: #22d3ee;
  --hub-cloud: #d8d6d0;
  --hub-glass: rgba(255, 255, 255, 0.04);
  --hub-glass-border: rgba(255, 255, 255, 0.08);
  --hub-radius-lg: 1rem;
  --hub-font-sans: 'Inter', system-ui, sans-serif;
  --hub-font-mono: 'Space Mono', ui-monospace, monospace;
}

.hub-body {
  margin: 0;
  min-height: 100vh;
  background: var(--hub-void);
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--hub-font-sans);
  -webkit-font-smoothing: antialiased;
}

.hub-ambient-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  background-image: radial-gradient(rgba(255, 255, 255, 0.3) 1px, transparent 1px);
  background-size: 32px 32px;
}

.hub-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 8, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hub-glass {
  background: var(--hub-glass);
  border: 1px solid var(--hub-glass-border);
  border-radius: var(--hub-radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hub-mark {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  border: 1px solid rgba(232, 99, 111, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hub-mark::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--hub-rose);
  box-shadow: 0 0 8px rgba(232, 99, 111, 0.5);
}

.hub-btn-donate {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--hub-rose);
  color: #fff;
  text-decoration: none;
  transition: filter 0.15s ease;
}
.hub-btn-donate:hover {
  filter: brightness(1.08);
}

.hub-title {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}

.hub-muted {
  color: rgba(255, 255, 255, 0.45);
}

.hub-mono {
  font-family: var(--hub-font-mono);
}

/** Log / telemetry — match hub (avoid unrelated accent colors) */
.hub-log {
  font-family: var(--hub-font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  color: rgba(216, 214, 208, 0.75);
  background: rgba(8, 8, 16, 0.9);
  border: 1px solid var(--hub-glass-border);
  border-radius: 12px;
  padding: 12px 14px;
  max-height: 240px;
  overflow-y: auto;
}
.hub-log .ts {
  color: var(--hub-phosphor);
  opacity: 0.85;
}

.hub-accent-link {
  color: var(--hub-cyan);
  text-decoration: none;
}
.hub-accent-link:hover {
  text-decoration: underline;
}

.hub-cta-primary {
  display: inline-block;
  font-family: var(--hub-font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  background: var(--hub-rose);
  color: var(--hub-void);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.hub-cta-primary:hover {
  filter: brightness(1.08);
}