/* ============================================================
   Components — liquid glass primitives
   ============================================================ */

/* ---- Glass panel / card ---- */
.glass {
  position: relative;
  background: var(--glass-fill);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-bd);
  border-radius: var(--r-card);
  box-shadow: var(--glass-edge), var(--glass-shadow);
}
.glass.strong { background: var(--glass-fill-strong); border-color: var(--glass-bd-strong); }
.glass.pad { padding: clamp(20px, 3vw, 34px); }
/* specular sheen sweep on hover */
.glass.sheen::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.10) 45%, transparent 60%);
  background-size: 250% 100%; background-position: 120% 0;
  transition: background-position var(--t-slow) var(--ease); opacity: .9;
}
.glass.sheen:hover::before { background-position: -40% 0; }

/* ---- Mono chip / status pill ---- */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .12em;
  color: var(--ink-70); padding: 6px 12px; border-radius: var(--r-chip);
  background: rgba(255,255,255,.05); border: 1px solid var(--glass-bd);
}
/* Live indicator — on-brand cyan (the app has no green status LED). */
.chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--halo-cyan);
  box-shadow: 0 0 10px 1px rgba(var(--halo-cyan-rgb),.8); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-sans); font-weight: 700; font-size: 15px; line-height: 1;
  padding: 15px 24px; border-radius: 999px; cursor: pointer; border: 1px solid transparent;
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-base) var(--ease), background var(--t-base) var(--ease);
  white-space: nowrap;
}
/* Promote to its own layer only while interacting — a persistent will-change
   keeps every button on the GPU forever, wasting memory. */
.btn:hover, .btn:focus-visible { will-change: transform; }
.btn:active { transform: translateY(1px) scale(.99); }
/* Primary = lit-accent glass (mirrors the app's .w-btn--lime): translucent
   accent gradient, accent-coloured text + keyline, lit from within. NOT a
   solid blue slab with white text. */
.btn-primary {
  color: var(--accent-ink); position: relative; isolation: isolate;
  background: var(--glass-accent-fill);
  -webkit-backdrop-filter: var(--glass-blur-light); backdrop-filter: var(--glass-blur-light);
  border-color: var(--glass-accent-bd);
  box-shadow: var(--glass-accent-edge), var(--glass-accent-glow);
}
.btn-primary:hover { border-color: rgba(var(--accent-blue-rgb),.9); box-shadow: var(--glass-accent-edge), 0 10px 44px -8px rgba(var(--accent-blue-rgb),.75); transform: translateY(-1px); }
.btn-secondary {
  color: var(--ink); background: var(--glass-fill-strong);
  -webkit-backdrop-filter: var(--glass-blur-light); backdrop-filter: var(--glass-blur-light);
  border-color: var(--glass-bd-strong); box-shadow: var(--glass-edge);
}
.btn-secondary:hover { border-color: rgba(var(--accent-blue-rgb),.55); box-shadow: var(--glass-edge), var(--glass-accent-glow); transform: translateY(-1px); }
.btn-ghost { color: var(--ink-70); padding: 14px 8px; }
.btn-ghost:hover { color: var(--halo-cyan); }
/* The header CTA sits in a compact bar — smaller than the hero/section CTAs. */
.header-cta .btn-primary { padding: 10px 18px; font-size: 14px; }

/* ---- Gradient rule / hairline ---- */
.grad-rule { height: 1px; width: 100%; background: var(--grad-halo); opacity: .55; border: 0; }

/* ---- Stat counter ---- */
.stat .num { font-family: var(--font-sans); font-weight: 900; font-size: clamp(34px, 5vw, 60px);
  line-height: 1; letter-spacing: -.03em; }
.stat .unit { font-family: var(--font-mono); font-size: 13px; color: var(--ink-50);
  text-transform: uppercase; letter-spacing: .12em; margin-top: 8px; }

/* ---- Header ---- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: var(--header-h);
  display: flex; align-items: center;
  /* Solid-ish bar instead of backdrop-filter: the fixed header re-blurred the
     moving background on every scroll frame — the biggest constant Chrome cost. */
  background: rgba(9,9,11,.82);
  border-bottom: 1px solid var(--glass-bd);
  transition: background var(--t-base) var(--ease);
}
.site-header.scrolled { background: rgba(9,9,11,.94); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -.01em; font-size: 18px; }
.brand img { width: 30px; height: 30px; filter: drop-shadow(0 0 12px rgba(var(--halo-cyan-rgb),.5)); }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { font-size: 14px; color: var(--ink-50); transition: color var(--t-fast) var(--ease); }
.nav a:hover { color: var(--ink); }
.header-cta { display: flex; align-items: center; gap: 10px; }
@media (max-width: 860px) {
  .nav { display: none; }
}
@media (max-width: 560px) {
  .header-cta .btn-ghost { display: none; }
  .site-header .btn-primary { padding: 12px 18px; font-size: 14px; }
  .brand span { font-size: 16px; }
}