/* ============================================
           NAVIGATION
 ============================================ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 16px 40px;
  z-index: 1002;
  background: var(--nav-bg);
  transition: var(--transition-fast);
}

nav.scrolled {
  background: var(--nav-bg-scrolled);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  padding: 12px 40px;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-decoration: none;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 25px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 25px;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  white-space: nowrap;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 50px;
  padding: 8px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--border-accent);
}

.toggle-icon {
  font-size: 0.9rem;
}

[data-theme='dark'] .icon-sun {
  display: inline;
}

[data-theme='dark'] .icon-moon {
  display: none;
}

[data-theme='light'] .icon-sun {
  display: none;
}

[data-theme='light'] .icon-moon {
  display: inline;
}

.nav-cta {
  background: var(--gradient-life);
  color: white;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  transition: var(--transition-fast);
  box-shadow: 0 4px 20px rgba(20, 184, 166, 0.3);
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(20, 184, 166, 0.4);
}

.mobile-menu-toggle {
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 10px 12px;
  line-height: 1;
  transition: var(--transition-fast);
  z-index: 1003;
  position: relative;
  width: 44px;
  height: 44px;
  display: none;
  align-items: center;
  justify-content: center;
}

.mobile-menu-toggle:hover {
  color: var(--accent-primary);
  border-color: var(--border-accent);
  background: var(--bg-card);
}

.mobile-menu-toggle:active {
  transform: scale(0.95);
}

.mobile-menu-toggle.active {
  border-color: var(--accent-primary);
  background: rgba(20, 184, 166, 0.1);
}

/* Toggle icon states */
.mobile-menu-toggle .icon-hamburger {
  display: block;
  font-size: 1.3rem;
}

.mobile-menu-toggle .icon-close {
  display: none;
  font-size: 1.5rem;
  font-weight: 300;
}

.mobile-menu-toggle.active .icon-hamburger {
  display: none;
}

.mobile-menu-toggle.active .icon-close {
  display: block;
}

/* Show hamburger on mobile, hide desktop nav */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links,
  .nav-actions .theme-toggle,
  .nav-actions .nav-cta {
    display: none;
  }
  .nav-right {
    display: flex;
    align-items: center;
  }
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--ocean-deep);
  backdrop-filter: blur(20px);
  border-left: 1px solid var(--border-subtle);
  padding: 80px 30px 30px;
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1001;
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 5px;
  transition: var(--transition-fast);
  display: none;
}

.mobile-menu-close:hover {
  color: var(--accent-primary);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.mobile-nav-link {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-fast);
}

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

.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.4s ease,
    visibility 0.4s ease;
  z-index: 1000;
}
.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
}

/* ============================================
           BREADCRUMB NAVIGATION
           ============================================ */
.breadcrumb-nav {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(10, 31, 40, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 40px;
  z-index: 999;
  /* Lower than nav */
  opacity: 0;
  transform: translateY(-100%);
  transition: all 0.3s ease;
}

.breadcrumb-nav.visible {
  opacity: 1;
  transform: translateY(0);
}

[data-theme='light'] .breadcrumb-nav {
  background: rgba(241, 245, 249, 0.95);
}

.breadcrumb-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.breadcrumb-separator {
  color: var(--text-muted);
  user-select: none;
}

.breadcrumb-current {
  color: var(--accent-primary);
  font-weight: 600;
}

/* ============================================
           STICKY ENROLL BUTTON
           ============================================ */
.sticky-enroll {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: var(--transition-smooth);
}

.sticky-enroll.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.sticky-enroll-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--gradient-life);
  color: white;
  padding: 16px 28px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  box-shadow: 0 10px 40px rgba(20, 184, 166, 0.5);
  transition: var(--transition-fast);
}

.sticky-enroll-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 50px rgba(20, 184, 166, 0.7);
}

/* ============================================
           SCROLL PROGRESS
           ============================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-life);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s ease;
}

.pillar-card-link {
  text-decoration: none;
}