/* ---------- Base layout ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #338DF8;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 200ms ease;
}
.site-header.is-solid {
  background: #fff;
}

.site-header .container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 16px;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

/* ---------- Brand ---------- */
.brand {
  color: #fff;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand img {
  height: 34px;
  width: auto;
  display: block;
}

/* ---------- Toggle (mobile) ---------- */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 10px;
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease;
  color: #338DF8;
}
.nav-toggle:hover { background: rgba(255,255,255,0.9); }
.nav-toggle:focus-visible { outline: 2px solid #8ab4ff; outline-offset: 2px; }

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  background: #338DF8;
  border-radius: 2px;
  transition: transform 200ms ease, opacity 200ms ease;
}
/* X animation */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Nav list ---------- */
.nav-list {
  --gap: 20px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--gap);
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 8px;
  color: #e7eaee;
  text-decoration: none;
  font-weight: 500;
  border-radius: 10px;
  transition: background 150ms ease, color 150ms ease;
}
.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(255,255,255,0.08);
  color: #fff;
  outline: none;
}
.nav-link.is-active {
  color: #fff;
  background: rgba(255,255,255,0.12);
}

/* CTA */
.nav-cta .btn-gradient {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: #fff;
  font-weight: 600;
  background: linear-gradient(135deg, #6c5ce7, #00c2ff);
  box-shadow: 0 6px 18px rgba(0, 194, 255, 0.25);
  transition: transform 150ms ease, box-shadow 150ms ease, filter 150ms ease;
}
.nav-cta .btn-gradient:hover { transform: translateY(-1px); filter: saturate(110%); }
.nav-cta .btn-gradient:focus-visible { outline: 2px solid #8ab4ff; outline-offset: 3px; }

/* ---------- Mobile behavior ---------- */
@media (max-width: 991px) {
  .nav-toggle { display: inline-flex; }
  .nav-list {
    position: absolute;
    left: 0; right: 0;
    top: 64px;
    flex-direction: column;
    gap: 8px;
    padding: 12px 16px 18px;
    background: #623CFF;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transform-origin: top center;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity 150ms ease, transform 150ms ease, visibility 0s linear 150ms;
  }
  .nav-list.is-open {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: scaleY(1);
    transition: opacity 150ms ease, transform 150ms ease;
  }
  .nav-cta { width: 100%; }
  .nav-cta .btn-gradient { width: 100%; justify-content: center; }
}

/* ---------- Desktop tweaks ---------- */
@media (min-width: 992px) {
  .nav-toggle { display: none; }
  .nav-list { position: static; }
}

/* ---------- Smooth scroll preference ---------- */
html {
  scroll-behavior: smooth;      /* native smooth scroll */
}

/* Optional: reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .nav-toggle, .btn-gradient, .nav-link { transition: none; }
}

/* ---------- Touch feedback ---------- */
.nav-link:active {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  transform: scale(0.97);
  transition: transform 80ms ease, background 80ms ease;
}

/* Optional: subtle haptic-style shadow for active state */
@media (hover: none) and (pointer: coarse) {
  .nav-link {
    transition: background 120ms ease, transform 120ms ease;
  }
  .nav-link:active {
    background: rgba(255,255,255,0.25);
    box-shadow: inset 0 0 6px rgba(0,0,0,0.25);
  }
}