/* ============================================
   DESIGNTECH INTERIORS — Navigation
   ============================================ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.site-nav.scrolled {
  background: rgba(20, 18, 14, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.3);
}

.site-nav.nav-transparent {
  background: transparent;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 32px;
}

/* ---- Logo ---- */
.nav-logo {
  display: block;
  flex-shrink: 0;
  transition: filter 0.4s var(--ease-out);
}

.nav-logo img {
  display: block;
  height: 140px;
  width: auto;
  max-width: none;
}

/* Logo red on dark nav */
/* .site-nav.nav-transparent .nav-logo img,
.site-nav.scrolled .nav-logo img {
  filter: brightness(0) saturate(100%) sepia(100%) hue-rotate(320deg) saturate(600%) brightness(1.1);
} */

.site-nav .nav-logo img {
  filter: none;
}

/* ---- Nav Links ---- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--black);
  position: relative;
  transition: color 0.2s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--brass);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover { color: var(--brass); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--brass); }

/* Nav links always white — nav is always dark */
.site-nav.nav-transparent .nav-links a,
.site-nav.scrolled .nav-links a {
  color: rgba(255,255,255,0.9);
}
.site-nav.nav-transparent .nav-links a:hover,
.site-nav.scrolled .nav-links a:hover {
  color: var(--white);
}

/* ---- CTA Button ---- */
.nav-cta {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 12px 28px;
  background: var(--brass);
  color: var(--white);
  border: 1px solid var(--brass);
  transition: all 0.3s var(--ease-out);
  white-space: nowrap;
}
.nav-cta:hover {
  background: transparent;
  color: var(--brass);
}

.site-nav.nav-transparent .nav-cta,
.site-nav.scrolled .nav-cta {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.site-nav.nav-transparent .nav-cta:hover,
.site-nav.scrolled .nav-cta:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

/* ---- Hamburger ---- */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  padding: 4px 0;
}

.nav-hamburger span {
  display: block;
  height: 1.5px;
  background: var(--black);
  transition: all 0.3s var(--ease-out);
  transform-origin: left;
}

.site-nav.nav-transparent .nav-hamburger span,
.site-nav.scrolled .nav-hamburger span {
  background: var(--white);
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(40deg) translateY(-1px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-40deg) translateY(1px); }

/* ---- Mobile Menu ---- */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  background: var(--white);
  padding: 32px 24px 40px;
  border-top: 1px solid var(--light-gray);
  flex-direction: column;
  gap: 0;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  z-index: 999;
}

.nav-mobile.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  display: flex;
}

.nav-mobile a {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--black);
  padding: 12px 0;
  border-bottom: 1px solid var(--light-gray);
  transition: color 0.2s;
}

.nav-mobile a:hover { color: var(--brass); }

.nav-mobile .nav-cta-mobile {
  margin-top: 24px;
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 14px 32px;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  border: none;
  align-self: flex-start;
}

/* ---- Responsive ---- */
@media (max-width: 960px) {
  .nav-links,
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .nav-logo img { height: 90px; }
}

@media (max-width: 600px) {
  .nav-logo img { height: 72px; }
}