/* ========================================
   NAVIGATION COMPONENT
   L'Ergonome Autonome - Multi-page Navigation
   ======================================== */

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  transition: all 0.4s var(--transition-elegant);
}

.site-header--scrolled {
  background-color: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(28, 25, 23, 0.06);
}

.site-header--scrolled .nav-brand-name {
  color: var(--color-ink);
}

/* Navigation Container */
.site-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .site-nav {
    padding: 1.5rem 4rem;
  }
}

@media (min-width: 1024px) {
  .site-nav {
    padding: 1.5rem 6rem;
  }
}

/* Brand */
.nav-brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: opacity 0.3s var(--transition-elegant);
}

.nav-brand::after {
  display: none;
}

.nav-brand:hover {
  opacity: 0.8;
}

.nav-brand-name {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-ink);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

@media (min-width: 768px) {
  .nav-brand-name {
    font-size: 1.25rem;
  }
}

.nav-brand-subtitle {
  font-family: var(--font-headings);
  font-size: 0.75rem;
  font-style: italic;
  color: var(--color-accent);
  margin-top: 0.125rem;
}

/* Navigation Links */
.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
  align-items: center;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  text-decoration: none;
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.3s var(--transition-elegant);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-secondary), var(--color-accent));
  transition: width 0.4s var(--transition-elegant);
}

.nav-link:hover {
  color: var(--color-accent);
}

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

.nav-link--active {
  color: var(--color-accent);
}

.nav-link--active::after {
  width: 100%;
}

/* Newsletter CTA Link */
.nav-link--cta {
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-paper) !important;
  border-radius: var(--radius-sm);
  transition: all 0.35s var(--transition-elegant);
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
  color: var(--color-paper) !important;
}

/* Mobile Toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink);
  transition: all 0.3s var(--transition-elegant);
  position: relative;
}

.nav-toggle-bar:nth-child(1) {
  transform: translateY(-6px);
}

.nav-toggle-bar:nth-child(3) {
  transform: translateY(6px);
}

.nav-toggle--active .nav-toggle-bar:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

.nav-toggle--active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle--active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-2px) rotate(-45deg);
}

/* Mobile Menu */
.nav-mobile {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: all 0.4s var(--transition-elegant);
  z-index: 999;
}

.nav-mobile--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-mobile .nav-link {
  font-size: 1.5rem;
  font-family: var(--font-headings);
  color: var(--color-ink);
}

.nav-mobile .nav-link--cta {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
}

/* Spacer for fixed header */
.nav-spacer {
  height: 80px;
}

@media (min-width: 768px) {
  .nav-spacer {
    height: 90px;
  }
}