/* ============================================================
   NAVBAR.CSS — Navigation component only
   Ongwacho Cherop Associates & Advocates
   Depends on: tokens.css
============================================================ */

/* ── Nav base ── */
.nav {
  position:   fixed;
  top:        0;
  left:       0;
  right:      0;
  z-index:    var(--z-nav);
  display:    flex;
  align-items: center;
  justify-content: space-between;
  padding:    0 5%;
  height:     var(--nav-height);
  transition: background var(--ease-med), box-shadow var(--ease-med);
  animation:  navFadeIn 0.6s 2.2s both;
}

/* ── Transparent over hero (default) ── */
.nav__brand { color: var(--color-white); }
.nav__link { color: rgba(255, 255, 255, 0.9); }
.nav__cta  {
  background:   var(--color-accent);
  color:        var(--color-primary-dk);
  border-color: var(--color-accent);
}

/* ── Scrolled state ── */
.nav--scrolled {
  background:  transparent;
  box-shadow:  none;
}

/* ── Logo ── */
.nav__brand {
  display:     flex;
  align-items: center;
  gap:         0.75rem;
  text-decoration: none;
  flex-shrink: 0;
  transition:  color var(--ease-fast);
}

/* ── Desktop nav links ── */
.nav__controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  padding: 0.5rem 0.5rem 0.5rem 1.25rem;
  flex: 1 1 auto;
  min-width: 0;
  justify-content: space-between;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.nav--scrolled .nav__controls {
  background: var(--color-cream);
  border-color: rgba(122, 14, 46, 0.25);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.nav--scrolled .nav__link { color: var(--color-primary); }
.nav--scrolled .nav__link::after { background: var(--color-accent-dk); }
.nav--scrolled .nav__link--active { color: var(--color-accent-dk) !important; }
.nav--scrolled .nav__controls .nav__brand-name { color: var(--color-ink); }
.nav--scrolled .nav__controls .nav__brand-sub  { color: var(--color-primary); }
.nav--scrolled .nav__emblem { filter: none; }
.nav--scrolled .nav__menu-bar { background: var(--color-primary); }
.nav__links {
  display:     flex;
  align-items: center;
  gap:         clamp(1rem, 2vw, 2.5rem);
  list-style:  none;
  background:  transparent;
  border:      none;
  padding:     0;
  margin:      0;
  margin-left: auto;
}
.nav__link {
  font-family:     var(--ff-body);
  font-size:       var(--fs-sm);
  font-weight:     500;
  letter-spacing:  0.04em;
  text-transform:  uppercase;
  text-decoration: none;
  white-space:     nowrap;
  transition:      color var(--ease-fast), opacity var(--ease-fast);
  position:        relative;
  min-height:      44px;
  display:         flex;
  align-items:     center;
}
.nav__link::after {
  content:    '';
  position:   absolute;
  bottom:     -2px;
  left:       0;
  right:      0;
  height:     1px;
  background: var(--color-accent);
  transform:  scaleX(0);
  transition: transform var(--ease-fast);
}
.nav__link:hover::after,
.nav__link--active::after {
  transform: scaleX(1);
}
.nav__link:hover        { opacity: 0.8; }
.nav__link--active      { color: var(--color-accent) !important; }

/* ── CTA button ── */
.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.25rem;
  background: var(--color-primary);
  color: var(--color-cream);
  font-family: var(--ff-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-radius: 999px;
  border: none;
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav__cta:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}
.nav--scrolled .nav__cta {
  background: var(--color-primary);
  color: var(--color-cream);
}
.nav--scrolled .nav__cta:hover {
  background: var(--color-primary-lt);
  color: var(--color-cream);
}

/* ── Hamburger ── */
.nav__menu-btn {
  display:         none;
  flex-direction:  column;
  justify-content: space-between;
  width:           28px;
  height:          20px;
  cursor:          pointer;
  background:      none;
  border:          none;
  padding:         0;
  min-width:       44px;
  min-height:      44px;
  align-items:     center;
}
.nav__menu-btn span {
  display:       block;
  width:         28px;
  height:        2px;
  background:    var(--color-cream);
  border-radius: 2px;
  transition:    transform var(--ease-fast), opacity var(--ease-fast);
}

/* ── Mobile overlay ── */
.nav__overlay {
  position:   fixed;
  inset:      0;
  background: var(--color-overlay);
  z-index:    var(--z-overlay);
  opacity:    0;
  visibility: hidden;
  transition: opacity var(--ease-med), visibility var(--ease-med);
}
.nav__overlay--visible {
  opacity:    1;
  visibility: visible;
}

/* ── Mobile drawer ── */
.nav__drawer {
  position:   fixed;
  top:        0;
  right:      0;
  bottom:     0;
  width:      min(320px, 85vw);
  z-index:    var(--z-drawer);
  background: var(--color-cream);
  display:    flex;
  flex-direction: column;
  gap:        0.5rem;
  padding:    6rem 2.5rem 3rem;
  transform:  translateX(100%);
  transition: transform var(--ease-slow);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.nav__drawer--open {
  transform: translateX(0);
}
/* Set by nav.js while the drawer is open: the page behind must not scroll. */
body.body--nav-open { overflow: hidden; }
.nav__drawer-link {
  font-family:    var(--ff-body);
  font-size:      var(--fs-lg);
  font-weight:    500;
  color:          var(--color-ink);
  text-decoration: none;
  padding:        0.75rem 0;
  border-bottom:  1px solid var(--color-border);
  transition:     color var(--ease-fast);
  min-height:     44px;
  display:        flex;
  align-items:    center;
}
.nav__drawer-link:hover {
  color: var(--color-primary);
}
.nav__drawer-cta {
  margin-top:   1rem;
  padding:      0.75rem 1.5rem;
  background:   var(--color-primary);
  color:        var(--color-accent) !important;
  border:       none;
  border-radius: var(--radius-sm);
  text-align:   center;
  justify-content: center;
  font-weight:  600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size:    var(--fs-sm);
}
.nav__drawer-cta:hover {
  background: var(--color-primary-dk);
}

/* ── Entry animation ── */
@keyframes navFadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Nav inner container + brand ── */
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--nav-max-w);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.nav__emblem { display: block; flex: 0 0 auto; height: 44px; width: auto; filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.35)); }

.nav__drawer-emblem { display: block; height: 44px; width: auto; }

.nav__brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.nav__brand-name {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-cream);
  transition: color 0.3s ease;
}

.nav__brand-sub {
  font-family: var(--ff-body);
  font-size: 0.6rem;
  font-weight: 400;
  color: rgba(250, 246, 239, 0.7);
  transition: color 0.3s ease;
}

/* ── Hamburger bars ── */
.nav__menu-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-cream);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ── Drawer internals ── */
.nav__drawer-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
  padding: 0;
}

.nav__drawer-close svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.nav__drawer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}
.nav__drawer .nav__brand-name {
  color: var(--color-primary);
}

.nav__drawer-links {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav__drawer-tagline {
  margin-top: auto;
  font-style: italic;
  font-size: 0.75rem;
  color: rgba(0, 0, 0, 0.45);
  text-align: center;
  padding: var(--space-sm);
}

/* ── Responsive: ≤1024px — pill stays as a small brand pill, links/CTA hide ── */
@media (max-width: 1024px) {
  .nav__links,
  .nav__cta { display: none; }
  .nav__controls { flex: 0 0 auto; padding: 0.5rem 1.25rem 0.5rem 1.25rem; }
  .nav__menu-btn {
    display: flex;
    justify-content: center;
    gap: 0.375rem;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transition: background-color 0.3s ease, border-color 0.3s ease;
  }
  .nav--scrolled .nav__menu-btn {
    background: var(--color-cream);
    border-color: rgba(122, 14, 46, 0.25);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* ── Responsive: ≤400px — phones: tighter side gutters so the menu button stays on screen ── */
@media (max-width: 400px) {
  .nav { padding: 0; }
  .nav__inner { padding-inline: 0.75rem; }
  .nav__drawer { padding-inline: 1.5rem; }
  .nav__drawer-cta { font-size: var(--fs-xs); }
}