/* =============================================================
   GLYDE — nav.css
   Navbar: default state, scrolled state, active link, CTA,
   mobile hamburger, full-screen overlay
   ============================================================= */

/* ─────────────────────────────────────────────────────────────
   1. NAVBAR SHELL
   ───────────────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 24px;
  left: 24px;
  right: 24px;
  max-width: calc(var(--container) - 48px);
  margin: 0 auto;
  z-index: 1000;
  height: 72px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 100px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
  transition: all 0.3s var(--ease);
}

/* ── Scrolled state (class added by nav.js at 60px scroll) ── */
#navbar.scrolled {
  height: 64px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  top: 16px;
}

/* ── Inner layout ── */
.nav-inner {
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}


/* ─────────────────────────────────────────────────────────────
   2. LOGO
   ───────────────────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: transparent;
  flex-shrink: 0;
}

.nav-logo-mark img,
.nav-logo-mark svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-logo-wordmark {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--charcoal);
  font-family: var(--font);
}


/* ─────────────────────────────────────────────────────────────
   3. NAV LINKS (desktop)
   ───────────────────────────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--dark-gray);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease);
  position: relative;
}

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

/* Active state underline — scaleX 0→1 */
.nav-links a.active {
  color: var(--charcoal);
  font-weight: 600;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease-out);
  border-radius: 2px;
}

.nav-links a.active::after,
.nav-links a:hover::after {
  transform: scaleX(1);
}


/* ─────────────────────────────────────────────────────────────
   4. CTA BUTTON (with pulse ring)
   ───────────────────────────────────────────────────────────── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: var(--green);
  color: var(--charcoal);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition:
    background   var(--duration-fast) var(--ease),
    transform    var(--duration-fast) var(--ease),
    box-shadow   var(--duration-fast) var(--ease);
}

.nav-cta:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-green);
}

.nav-cta:active {
  transform: translateY(0) scale(0.98);
  box-shadow: none;
}



/* ─────────────────────────────────────────────────────────────
   5. HAMBURGER BUTTON (mobile only)
   ───────────────────────────────────────────────────────────── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease);
  z-index: 1100;
  flex-shrink: 0;
}

.nav-hamburger:hover {
  background: var(--light-gray);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--charcoal);
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform  0.35s var(--ease-in-out),
    opacity    0.25s var(--ease),
    width      0.25s var(--ease);
}

/* X state when menu is open */
.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ─────────────────────────────────────────────────────────────
   6. MOBILE FULL-SCREEN OVERLAY MENU
   ───────────────────────────────────────────────────────────── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--charcoal);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;

  /* Hidden state */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease-in-out);
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* Overlay nav links */
.nav-overlay-links {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-overlay-links li {
  overflow: hidden;
}

.nav-overlay-links a {
  display: block;
  font-size: clamp(28px, 6vw, 40px);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: -1px;
  padding: 10px 32px;
  text-decoration: none;
  transition: color 0.25s var(--ease);

  /* Stagger entrance */
  transform: translateY(40px);
  opacity: 0;
  transition:
    color      0.25s var(--ease),
    transform  0.5s  var(--ease-out),
    opacity    0.5s  var(--ease-out);
}

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

.nav-overlay-links a:hover,
.nav-overlay-links a.active {
  color: var(--white);
}

.nav-overlay-links a.active {
  color: var(--green);
}

/* Stagger delays for overlay links */
.nav-overlay.open .nav-overlay-links li:nth-child(1) a { transition-delay: 0.05s; }
.nav-overlay.open .nav-overlay-links li:nth-child(2) a { transition-delay: 0.10s; }
.nav-overlay.open .nav-overlay-links li:nth-child(3) a { transition-delay: 0.15s; }
.nav-overlay.open .nav-overlay-links li:nth-child(4) a { transition-delay: 0.20s; }
.nav-overlay.open .nav-overlay-links li:nth-child(5) a { transition-delay: 0.25s; }
.nav-overlay.open .nav-overlay-links li:nth-child(6) a { transition-delay: 0.30s; }

/* CTA inside overlay */
.nav-overlay-cta {
  margin-top: 40px;
  padding: 14px 40px;
  background: var(--green);
  color: var(--charcoal);
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  text-decoration: none;

  transform: translateY(30px);
  opacity: 0;
  transition:
    background 0.2s var(--ease),
    transform  0.5s var(--ease-out),
    opacity    0.5s var(--ease-out);
  transition-delay: 0.35s;
}

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

.nav-overlay-cta:hover {
  background: var(--green-dark);
}

/* Overlay close (X) button in top right */
.nav-overlay-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  color: var(--white);
  font-size: 20px;
  transition: background var(--duration-fast) var(--ease);
}

.nav-overlay-close:hover {
  background: rgba(255, 255, 255, 0.16);
}

/* Overlay social row */
.nav-overlay-social {
  position: absolute;
  bottom: 40px;
  display: flex;
  gap: 20px;
}

.nav-overlay-social a {
  color: rgba(255, 255, 255, 0.35);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}

.nav-overlay-social a:hover {
  color: var(--green);
}


/* ─────────────────────────────────────────────────────────────
   7. RESPONSIVE — mobile breakpoint
   ───────────────────────────────────────────────────────────── */
@media (max-width: 767px) {
  #navbar {
    top: 12px;
    left: 12px;
    right: 12px;
  }

  .nav-inner {
    height: 60px;
    padding: 0 16px;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }
}

/* Hide overlay on desktop */
@media (min-width: 768px) {
  .nav-overlay {
    display: none !important;
  }
}

/* Prevent body scroll when overlay is open */
body.nav-open {
  overflow: hidden;
}