:root {
  --base: #090b10;
  --surface: #11151b;
  --surface-2: #161c26;
  --surface-3: #1c2330;
  --cyan: #6ee7ff;
  --violet: #8b5cf6;
  --amber: #f59e0b;
  --emerald: #34d399;
  --fg: #e5e7eb;
  --muted: #8b93a1;
  --border: rgba(229, 231, 235, 0.08);
  --border-strong: rgba(229, 231, 235, 0.16);
}

html { background: var(--base); }

body {
  background-color: var(--base);
  color: var(--fg);
  font-feature-settings: "ss01";
}

::selection { background: var(--violet); color: var(--base); }

section { scroll-margin-top: 88px; }

/* grain overlay for depth */
.grain {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* faint graticule grid, map-flavored */
.graticule {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(229, 231, 235, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229, 231, 235, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 40%, transparent 90%);
}

.corner-frame { position: relative; }
.corner-frame > .corner {
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
}
.corner-frame > .corner.tl { top: -1px; left: -1px; border-top: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.corner-frame > .corner.tr { top: -1px; right: -1px; border-top: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }
.corner-frame > .corner.bl { bottom: -1px; left: -1px; border-bottom: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.corner-frame > .corner.br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }

/* reticle-lock hover: corner brackets pull outward and glow, like a targeting lock */
.corner-frame.reticle {
  transition: box-shadow 420ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.corner-frame.reticle > .corner {
  transition: transform 420ms cubic-bezier(0.34, 1.56, 0.64, 1), filter 420ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.corner-frame.reticle:hover > .corner {
  filter: drop-shadow(0 0 6px var(--cyan));
}
.corner-frame.reticle:hover > .corner.tl { transform: translate(-5px, -5px); }
.corner-frame.reticle:hover > .corner.tr { transform: translate(5px, -5px); }
.corner-frame.reticle:hover > .corner.bl { transform: translate(-5px, 5px); }
.corner-frame.reticle:hover > .corner.br { transform: translate(5px, 5px); }
.corner-frame.reticle:hover {
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7), 0 2px 0 0 rgba(255,255,255,0.02) inset, 0 0 40px -8px rgba(110,231,255,0.4);
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.7; }
  75% { transform: scale(2.1); opacity: 0; }
  100% { transform: scale(2.1); opacity: 0; }
}
.status-dot { position: relative; }
.status-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  background: var(--emerald);
  animation: pulse-ring 2.4s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-12px, 10px); }
}
.contour-drift { animation: drift 22s ease-in-out infinite; }

.lift {
  transition: transform 420ms cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 420ms cubic-bezier(0.34, 1.56, 0.64, 1), border-color 300ms ease;
}
.lift:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
}

.btn-primary {
  transition: transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 40px -14px rgba(110, 231, 255, 0.45), 0 8px 20px -10px rgba(0,0,0,0.6); }
.btn-primary:active { transform: translateY(0px) scale(0.98); }

.btn-ghost { transition: transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1), border-color 250ms ease, color 250ms ease; }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.btn-ghost:active { transform: translateY(0px) scale(0.98); }

a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); }

.ticker-track {
  animation: ticker 34s linear infinite;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

#mobile-panel {
  transition: transform 380ms cubic-bezier(0.32, 0.72, 0, 1), opacity 380ms ease;
}

.glow-card {
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7), 0 2px 0 0 rgba(255,255,255,0.02) inset;
}

.contour-svg path { vector-effect: non-scaling-stroke; }

/* article typography (blog posts) */
.article-prose {
  color: var(--fg);
  line-height: 1.8;
}
.article-prose > * + * { margin-top: 1.4em; }
.article-prose h2 {
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-top: 2.2em;
  color: var(--fg);
}
.article-prose h3 {
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  margin-top: 1.8em;
}
.article-prose p { color: var(--muted); }
.article-prose strong { color: var(--fg); font-weight: 600; }
.article-prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.article-prose ul, .article-prose ol { color: var(--muted); padding-left: 1.4em; }
.article-prose li { margin-top: 0.5em; }
.article-prose ul { list-style: disc; }
.article-prose ol { list-style: decimal; }
.article-prose blockquote {
  border-left: 2px solid var(--cyan);
  padding-left: 1.2em;
  color: var(--fg);
  font-style: italic;
}
.article-prose code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  background: var(--surface-2);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}
.article-prose pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2em;
  overflow-x: auto;
}
.article-prose pre code { background: none; padding: 0; }