/* ================================================================
   PRAGBIS TECHNOLOGIES — NAVIGATION
   ================================================================ */

/* ── Base Nav ───────────────────────────────────────────────────── */
#site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 22px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--t-slow), box-shadow var(--t-slow), padding var(--t-base);
}

#site-nav.scrolled {
  background: rgba(3, 2, 10, 0.88);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 1px 0 rgba(0, 229, 200, 0.12);
  padding: 14px var(--gutter);
}

/* ── Logo ───────────────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  z-index: 1100;
  flex-shrink: 0;
}

.nav-logo img {
  height: 56px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(0, 229, 200, 0.3));
}

/* ── Links ──────────────────────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--clr-text);
  letter-spacing: 0.3px;
  position: relative;
  transition: color var(--t-fast);
  padding-bottom: 4px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--clr-accent);
  border-radius: 99px;
  transition: width var(--t-base);
}

.nav-links a:hover {
  color: var(--clr-white);
}

.nav-links a:hover::after {
  width: 100%;
}

/* ── CTA Button ─────────────────────────────────────────────────── */
.nav-cta {
  padding: 10px 24px;
  font-size: 14px;
}

/* ── Right Group ────────────────────────────────────────────────── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
  min-width: 0;
}

.nav-links {
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.nav-links a {
  font-size: 13px;
  white-space: nowrap;
}

@media (min-width: 1300px) {
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 14px; }
}

/* ── Hamburger ──────────────────────────────────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1100;
  position: relative;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-white);
  border-radius: 99px;
  transition: transform var(--t-base), opacity var(--t-base), background var(--t-base);
  transform-origin: center;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
  background: var(--clr-accent);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
  background: var(--clr-accent);
}

/* ── Mobile Overlay ─────────────────────────────────────────────── */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 2, 10, 0.97);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-20px);
  transition: opacity var(--t-slow), transform var(--t-slow);
}

.mobile-overlay.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.mobile-overlay .nav-links {
  flex-direction: column;
  gap: 24px;
  text-align: center;
}

.mobile-overlay .nav-links a {
  font-family: var(--ff-heading);
  font-size: clamp(24px, 6vw, 40px);
  font-weight: 700;
  color: var(--clr-white);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease, color var(--t-fast);
}

.mobile-overlay.open .nav-links a {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delay for mobile links */
.mobile-overlay .nav-links li:nth-child(1) a { transition-delay: 0.05s; }
.mobile-overlay .nav-links li:nth-child(2) a { transition-delay: 0.10s; }
.mobile-overlay .nav-links li:nth-child(3) a { transition-delay: 0.15s; }
.mobile-overlay .nav-links li:nth-child(4) a { transition-delay: 0.20s; }
.mobile-overlay .nav-links li:nth-child(5) a { transition-delay: 0.25s; }

.mobile-overlay .nav-links a:hover {
  color: var(--clr-accent);
}

.mobile-overlay .btn-primary {
  opacity: 0;
  transition: opacity 0.4s ease 0.3s, background var(--t-base), transform var(--t-base), box-shadow var(--t-base);
}

.mobile-overlay.open .btn-primary {
  opacity: 1;
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links,
  .nav-right .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}