/* =============================================
   ATELIER VERA — NAV
   nav.css: header, footer, navigation
   ============================================= */

/* ─── HEADER ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-5) var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  transition:
    background var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out),
    padding var(--duration) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(246, 243, 238, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--color-border);
  padding-block: var(--space-3);
}

/* Logo */
.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
  flex-shrink: 0;
}

.nav-logo__name {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-dark);
  transition: color var(--duration) var(--ease-out);
}

.nav-logo__tagline {
  font-family: var(--font-display-sc);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* On dark hero: show white logo before scroll */
.site-header:not(.scrolled) .nav-logo__name {
  color: var(--color-cream);
}
.site-header:not(.scrolled) .nav-logo__tagline {
  color: rgba(250,247,242,0.45);
}

/* Main nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex: 1;
  justify-content: center;
}

.nav-links a {
  font-family: var(--font-display-sc);
  font-size: var(--text-xs);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(250,247,242,0.75);
  position: relative;
  transition: color var(--duration) var(--ease-out);
  white-space: nowrap;
}

.site-header.scrolled .nav-links a {
  color: var(--color-text-muted);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration) var(--ease-out);
}

.nav-links a:hover { color: var(--color-accent); }
.site-header.scrolled .nav-links a:hover { color: var(--color-accent); }

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

/* Right side: lang + CTA */
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-shrink: 0;
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
}

.lang-btn {
  font-family: var(--font-display-sc);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(250,247,242,0.50);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--duration) var(--ease-out);
}

.site-header.scrolled .lang-btn {
  color: var(--color-text-muted);
}

.lang-btn:hover,
.lang-btn.active {
  color: var(--color-accent);
}
.lang-btn.active { font-weight: 500; }

/* Nav CTA */
.nav-cta {
  padding: 0.6rem 1.4rem;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
}

/* On dark hero: transparent CTA */
.site-header:not(.scrolled) .nav-cta {
  background: transparent;
  border-color: rgba(250,247,242,0.35);
  color: var(--color-cream);
}
.site-header:not(.scrolled) .nav-cta:hover {
  background: rgba(176,139,90,0.25);
  border-color: var(--color-accent-light);
  color: var(--color-cream);
  box-shadow: none;
}

/* ─── BURGER ─── */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-cream);
  transition: all var(--duration) var(--ease-out);
}

.site-header.scrolled .nav-burger span {
  background: var(--color-dark);
}

/* ─── MOBILE NAV ─── */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--color-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  padding: var(--space-16) var(--container-pad);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) var(--ease-out);
  transform: translateY(-8px);
}

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

.nav-mobile a {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: 0.03em;
  color: rgba(250,247,242,0.75);
  transition: color var(--duration) var(--ease-out);
}

.nav-mobile a:hover,
.nav-mobile a.active { color: var(--color-accent-light); }

.nav-mobile .lang-switcher {
  margin-top: var(--space-6);
  gap: var(--space-4);
}
.nav-mobile .lang-btn {
  font-size: var(--text-sm);
  color: rgba(250,247,242,0.4);
}
.nav-mobile .lang-btn:hover,
.nav-mobile .lang-btn.active { color: var(--color-accent-light); }

/* ─── FOOTER ─── */
.site-footer {
  background: var(--color-dark);
  color: var(--color-white);
  padding-block: var(--space-16) var(--space-8);
}

.site-footer .container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand__logo {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.footer-brand__desc {
  font-size: var(--text-sm);
  font-weight: 400;
  color: rgba(255,255,255,0.50);
  line-height: var(--leading-loose);
  max-width: 34ch;
}

.footer-col__title {
  font-family: var(--font-display-sc);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-5);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col ul li a {
  font-family: var(--font-display-sc);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.42);
  transition: color var(--duration) var(--ease-out);
}

.footer-col ul li a:hover { color: var(--color-accent-light); }

.footer-contact-item {
  font-size: var(--text-sm);
  font-weight: 300;
  color: rgba(255,255,255,0.50);
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-contact-item span:first-child {
  font-family: var(--font-display-sc);
  font-size: 0.58rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
}

.footer-contact-item a:hover { color: var(--color-accent-light); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.20);
  letter-spacing: 0.08em;
}

.footer-socials {
  display: flex;
  gap: var(--space-5);
}

.footer-socials a,
.footer-social-btn {
  font-family: var(--font-display-sc);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.30);
  transition: color var(--duration) var(--ease-out);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.footer-socials a:hover,
.footer-social-btn:hover { color: var(--color-accent-light); }

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .nav-links { gap: var(--space-4); }
}

@media (max-width: 900px) {
  .nav-links,
  .nav-right .nav-cta { display: none; }
  .nav-burger { display: flex; }

  .site-footer .container {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .site-footer .container {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}