/* ═══════════════════════════════════════════════════════════════════════
   SITE NAV — verbatim copy of homepage nav for case-study pages.
   Depends on theme.css (for tokens) and cs.css streak system globals
   (--sa property + snakeRotate + electricFlicker keyframes).
   ═══════════════════════════════════════════════════════════════════════ */

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 14px 40px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transform: translateY(-100%);
  animation: navSlide 0.6s ease-out 0.3s forwards;
}
nav::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent 10%, rgba(var(--amber-rgb),0.35) 50%, transparent 90%);
  opacity: 0.5; pointer-events: none;
}
@keyframes navSlide { to { transform: translateY(0); } }

/* ── BOT LOGO (inline SVG) ──────────────────────────────────────────────
   Eyes + every logo animation trace --logo-eye / --logo-eye-rgb, so the mark
   recolours with the theme: Cobalt/Peach → cobalt eyes, Stone/Amber → amber.
   Kept byte-identical to the homepage block. No raster mask, no overlays. */
.nav-logo-wrap { position: relative; overflow: visible; flex-shrink: 0; padding: 4px; display: block; cursor: pointer; text-decoration: none; line-height: 0; }
svg.nav-logo { height: 48px; width: 48px; display: block; overflow: visible; animation: logoSvgGlitch 11s linear infinite; }
svg.nav-logo .bot-eye { animation: logoEyePulse 9s ease-in-out infinite; }
svg.nav-logo .bot-eye-glow { animation: logoEyeBloom 9s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }
svg.nav-logo .bot-outline { animation: logoOutlineFlicker 12s ease-in-out infinite; }
.nav-logo-wrap:hover svg.nav-logo .bot-eye { filter: drop-shadow(0 0 6px rgba(var(--logo-eye-rgb), 0.9)); }
@keyframes logoEyePulse {
  0%, 68%, 100% { filter: drop-shadow(0 0 3px rgba(var(--logo-eye-rgb),0.55)); }
  80%           { filter: drop-shadow(0 0 9px rgba(var(--logo-eye-rgb),1)) drop-shadow(0 0 18px rgba(var(--logo-eye-rgb),0.55)); }
  90%           { filter: drop-shadow(0 0 3px rgba(var(--logo-eye-rgb),0.55)); }
}
@keyframes logoEyeBloom {
  0%, 68%, 100% { opacity: 0.55; transform: scale(1); }
  80%           { opacity: 1;    transform: scale(1.3); }
  90%           { opacity: 0.55; transform: scale(1); }
}
@keyframes logoOutlineFlicker {
  0%, 84%, 100% { opacity: 1; }
  87%           { opacity: 0.55; }
  89%           { opacity: 1; }
  92%           { opacity: 0.72; }
  94%           { opacity: 1; }
}
@keyframes logoSvgGlitch {
  0%, 38%, 58%, 78%, 100% { transform: translate(0,0) skewX(0); filter: none; }
  39% { transform: translate(-2px,0) skewX(-1.5deg); filter: drop-shadow(3px 0 0 rgba(var(--logo-eye-rgb),0.85)) drop-shadow(-3px 0 0 rgba(var(--peacock-rgb),0.85)); }
  40% { transform: translate(2px,0); }
  41% { transform: translate(-1px,0) skewX(0.8deg); filter: none; }
  59% { transform: translate(2px,0) skewX(1.2deg); filter: drop-shadow(-3px 0 0 rgba(var(--logo-eye-rgb),0.8)); }
  60% { transform: translate(-2px,0); filter: none; }
  79% { transform: translate(1px,0) skewX(-0.6deg); }
  80% { transform: translate(0,0); filter: none; }
}
/* Shared glitch used by .nav-cta (NOT the logo — the logo has logoSvgGlitch).
   Left on the original amber/peacock tokens so the CTA is unaffected. */
@keyframes logoGlitch {
  0%, 38%, 58%, 78%, 100% { transform: translate(0,0) skewX(0); filter: none; }
  39% { transform: translate(-2px, 0) skewX(-1.5deg);
        filter: drop-shadow(3px 0 0 rgba(var(--amber-rgb),0.85)) drop-shadow(-3px 0 0 rgba(var(--peacock-rgb),0.85)); }
  40% { transform: translate(2px, 0); }
  41% { transform: translate(-1px, 0) skewX(0.8deg); filter: none; }
  59% { transform: translate(1px, -1px) skewX(1.2deg);
        filter: drop-shadow(-3px 0 0 rgba(var(--amber-rgb),0.85)) drop-shadow(3px 0 0 rgba(var(--peacock-rgb),0.85)); }
  60% { transform: translate(-2px, 1px); }
  61% { transform: translate(0, 0); filter: none; }
  79% { transform: translate(-3px, 1px) skewX(-2deg);
        filter: drop-shadow(3px 0 0 rgba(var(--amber-rgb),0.85)) drop-shadow(-3px 0 0 rgba(var(--peacock-rgb),0.85)); }
  80% { transform: translate(3px,-1px); }
  81% { transform: translate(-1px, 0) skewX(1deg); }
  82% { transform: translate(0,0); filter: none; }
}

/* Center nav links */
.nav-links {
  display: flex; gap: 38px; position: absolute; left: 50%; transform: translateX(-50%);
  top: 0; bottom: 0; align-items: stretch;
}
.nav-links a {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
  transition: color 0.35s ease; position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--amber); opacity: 1; }

/* Dropdown items */
.nav-item { position: relative; display: flex; align-items: center; }
.nav-parent {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
  display: flex; align-items: center; gap: 6px;
  cursor: pointer; user-select: none;
  transition: color 0.35s ease; white-space: nowrap; position: relative;
}
.nav-item:hover .nav-parent, .nav-item.open .nav-parent { color: var(--amber); }
.nav-chevron { transition: transform 0.45s cubic-bezier(0.16,1,0.3,1); flex-shrink: 0; }
.nav-item.open .nav-chevron { transform: rotate(180deg); }
.nav-item.has-dropdown::after { content: ''; position: absolute; top: 100%; left: -24px; right: -24px; height: 4px; }
.nav-dropdown {
  position: absolute; top: 100%; left: 50%;
  background: linear-gradient(180deg, rgba(10,10,10,0.94), rgba(6,6,6,0.96));
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid rgba(var(--amber-rgb),0.18); border-top: none; border-radius: 0 0 14px 14px; padding: 8px;
  min-width: 200px; opacity: 0; pointer-events: none;
  transform: translateX(-50%) translateY(-8px);
  transform-origin: top center;
  transition: opacity 0.55s cubic-bezier(0.16,1,0.3,1), transform 0.55s cubic-bezier(0.16,1,0.3,1);
  box-shadow: 0 24px 60px rgba(0,0,0,0.6), 0 0 40px rgba(var(--amber-rgb),0.08);
  z-index: 200;
}
.nav-item.open .nav-dropdown { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.nav-item.active .nav-parent { color: var(--amber); }
.nd-item {
  display: flex; flex-direction: column; gap: 0; padding: 10px 16px;
  border-radius: 10px;
  transition: background 0.6s ease, box-shadow 0.6s ease;
  position: relative; opacity: 0; transform: translateY(-6px); overflow: hidden;
}
.nav-item.open .nd-item { animation: ndItemIn 0.6s cubic-bezier(0.16,1,0.3,1) forwards; }
.nav-item.open .nd-item:nth-child(1) { animation-delay: 0.10s; }
.nav-item.open .nd-item:nth-child(2) { animation-delay: 0.18s; }
.nav-item.open .nd-item:nth-child(3) { animation-delay: 0.26s; }
.nav-item.open .nd-item:nth-child(4) { animation-delay: 0.34s; }
.nav-item.open .nd-item:nth-child(5) { animation-delay: 0.42s; }
@keyframes ndItemIn { to { opacity: 1; transform: translateY(0); } }
.nd-item:hover:not(.active) { background: rgba(var(--peacock-rgb),0.10); opacity: 1; box-shadow: inset 0 0 0 1px rgba(var(--peacock-rgb),0.28); }
.nd-item.active { background: rgba(var(--amber-rgb),0.08); opacity: 1; box-shadow: inset 0 0 0 1px rgba(var(--amber-rgb),0.18); }
.nd-title { font-size: 13.5px; font-weight: 700; color: var(--text); transition: color 0.5s ease; letter-spacing: 0; }
.nd-item:hover:not(.active) .nd-title { color: var(--peacock-bright); }
.nd-item.active .nd-title { color: var(--amber); }

/* Right side: linkedin + cta + hamburger */
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-linkedin {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--border); color: var(--text-muted);
  transition: color 0.25s, border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  flex-shrink: 0;
}
.nav-linkedin svg { width: 14px; height: 14px; }
.nav-linkedin:hover {
  color: var(--amber); border-color: rgba(var(--amber-rgb),0.45);
  transform: translateY(-1px); opacity: 1;
  box-shadow: 0 4px 14px rgba(var(--amber-rgb),0.18);
}

.nav-cta {
  font-size: 11px; font-weight: 800; padding: 7px 18px;
  background: var(--amber); color: #0a0a0a;
  border-radius: 999px; text-transform: uppercase; letter-spacing: 0.06em;
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative; overflow: visible; isolation: isolate;
  animation: logoGlitch 11s linear -5.5s infinite;
}
.nav-cta::before {
  content: ''; position: absolute; inset: -2px; border-radius: 999px; padding: 2px;
  /* Two cobalt arcs 180° apart (becomes stone-grey in Stone/Amber theme) */
  background: conic-gradient(from var(--sa),
    transparent 0deg 30deg,
    rgba(var(--peacock-rgb), 0.22)  50deg,
    rgba(var(--peacock-rgb), 0.62)  80deg,
    rgba(var(--peacock-rgb), 0.95) 105deg,
    rgba(var(--peacock-rgb), 0.62) 130deg,
    rgba(var(--peacock-rgb), 0.22) 160deg,
    transparent 180deg 210deg,
    rgba(var(--peacock-rgb), 0.22) 230deg,
    rgba(var(--peacock-rgb), 0.62) 260deg,
    rgba(var(--peacock-rgb), 0.95) 285deg,
    rgba(var(--peacock-rgb), 0.62) 310deg,
    rgba(var(--peacock-rgb), 0.22) 340deg,
    transparent 360deg);
  filter: drop-shadow(0 0 3px rgba(var(--peacock-rgb), 0.45)) drop-shadow(0 0 8px rgba(var(--peacock-rgb), 0.22));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask-composite: exclude;
  animation: snakeRotate 18s linear -3s infinite, electricFlicker 6s steps(28, end) infinite;
  pointer-events: none; z-index: 1;
}
.nav-cta::after {
  content: ''; position: absolute; inset: -4px; border-radius: 999px;
  background-color: rgba(var(--amber-rgb),0.10); filter: blur(8px);
  animation: ctaHaloAlt 6s ease-in-out infinite;
  pointer-events: none; z-index: -1;
}
@keyframes ctaHaloAlt {
  0%, 100% { background-color: rgba(var(--amber-rgb),0.10); }
  50%      { background-color: rgba(var(--peacock-rgb),0.10); }
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--amber-rgb),0.22), 0 0 12px rgba(var(--peacock-rgb),0.14);
  opacity: 1;
}

/* Hamburger + mobile menu */
.nav-hamburger {
  display: none; background: none; border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-muted); cursor: pointer;
  padding: 5px 10px; font-size: 18px; line-height: 1.2;
  transition: color 0.15s, border-color 0.15s;
}
.nav-hamburger:hover { color: var(--amber); border-color: rgba(var(--amber-rgb),0.3); }
.nav-mobile {
  display: none; position: fixed; top: 87px; left: 0; right: 0;
  background: rgba(10,10,10,0.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 20px; flex-direction: column; gap: 2px; z-index: 98;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-size: 12px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
  padding: 11px 16px; border-radius: 6px;
  transition: background 0.12s, color 0.12s;
}
.nav-mobile a:hover { background: var(--s2); color: var(--amber); opacity: 1; }
.nm-group { padding: 4px 0; }
.nm-group:not(:last-child) { border-bottom: 1px solid var(--border); margin-bottom: 6px; padding-bottom: 10px; }
.nm-label {
  font-size: 9px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--amber); padding: 6px 16px 4px;
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; align-items: center; }
  nav { padding: 12px 20px; }
}