/* ============================================================
   SOLM8.AI Unified Navigation Styles
   Apple-Grade Navigation Design
   ============================================================ */

@import url('design-system.css');

/* ============================================================
   Navigation Base
   ============================================================ */

.nav-unified {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: transparent;
  transition: all var(--duration-normal) var(--ease-default);
}

/* Scrolled State */
.nav-unified.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: var(--glass-blur-intense);
  -webkit-backdrop-filter: var(--glass-blur-intense);
  border-bottom: 1px solid var(--glass-border);
}

/* Hidden State */
.nav-unified.hidden {
  transform: translateY(-100%);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* ============================================================
   Logo
   ============================================================ */

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  transition: all var(--duration-fast) var(--ease-default);
}

.nav-logo:hover {
  transform: scale(1.05);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  animation: logo-float 6s ease-in-out infinite;
}

@keyframes logo-float {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-3px) rotate(180deg); }
}

.nav-logo-text {
  color: var(--text-primary);
}

.nav-logo-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   Desktop Menu
   ============================================================ */

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex: 1;
  justify-content: flex-end;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-default);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--glass-background);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ============================================================
   User Menu
   ============================================================ */

.nav-user-menu {
  position: relative;
}

.nav-user-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.25rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
}

.nav-user-toggle:hover {
  background: var(--glass-background);
}

.nav-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-semibold);
  color: white;
  font-size: var(--text-sm);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 200px;
  background: rgba(20, 20, 30, 0.95);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--duration-fast) var(--ease-default);
  backdrop-filter: var(--glass-blur-intense);
  -webkit-backdrop-filter: var(--glass-blur-intense);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.nav-user-toggle.active + .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ============================================================
   Mobile Navigation
   ============================================================ */

.nav-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
}

.nav-mobile-toggle:hover {
  background: var(--glass-background);
}

.nav-mobile-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 0 auto;
  position: relative;
  transition: all var(--duration-normal) var(--ease-default);
}

.nav-mobile-toggle-icon::before,
.nav-mobile-toggle-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: inherit;
  transition: all var(--duration-normal) var(--ease-default);
}

.nav-mobile-toggle-icon::before {
  top: -8px;
}

.nav-mobile-toggle-icon::after {
  bottom: -8px;
}

/* Mobile menu open state */
.nav-mobile-toggle[aria-expanded="true"] .nav-mobile-toggle-icon {
  background: transparent;
}

.nav-mobile-toggle[aria-expanded="true"] .nav-mobile-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-mobile-toggle[aria-expanded="true"] .nav-mobile-toggle-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* Mobile Menu */
.nav-mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.98);
  backdrop-filter: var(--glass-blur-intense);
  -webkit-backdrop-filter: var(--glass-blur-intense);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-default);
  overflow-y: auto;
}

.nav-mobile-menu[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.nav-mobile-content {
  padding: var(--space-6) var(--container-padding);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.nav-mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.nav-mobile-link {
  display: block;
  padding: var(--space-4);
  color: var(--text-primary);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-default);
}

.nav-mobile-link:hover {
  background: var(--glass-background);
  transform: translateX(4px);
}

.nav-mobile-user {
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--glass-border);
}

.nav-mobile-user-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--font-medium);
}

.nav-mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
}

/* ============================================================
   Dashboard Navigation Variant
   ============================================================ */

.nav-dashboard {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: var(--glass-blur-intense);
  -webkit-backdrop-filter: var(--glass-blur-intense);
  border-bottom: 1px solid var(--glass-border);
}

.nav-dashboard .nav-container {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

/* ============================================================
   Minimal Navigation Variant (Auth Pages)
   ============================================================ */

.nav-minimal .nav-links {
  display: none;
}

.nav-minimal .nav-logo {
  margin: 0 auto;
}

/* ============================================================
   Responsive Design
   ============================================================ */

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .nav-container {
    padding: 0.75rem var(--space-4);
  }

  .nav-menu {
    display: none;
  }

  .nav-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-logo-text {
    font-size: var(--text-lg);
  }
}

@media (min-width: 769px) {
  .nav-mobile-menu {
    display: none !important;
  }
}

/* ============================================================
   Animations
   ============================================================ */

@keyframes nav-slide-down {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav-unified {
  animation: nav-slide-down var(--duration-slow) var(--ease-out);
}

/* Loading shimmer effect for avatar */
.nav-user-avatar[data-loading] {
  background: linear-gradient(90deg,
    var(--glass-background) 25%,
    var(--glass-background-hover) 50%,
    var(--glass-background) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

/* ============================================================
   Print Styles
   ============================================================ */

@media print {
  .nav-unified {
    display: none;
  }
}