/* ===================================
   COMPONENT: Navigation Bar
   BEM Block: nav
   Purpose: Fixed header navigation with dropdown menus
   Dependencies: main.css for CSS variables
   =================================== */

.nav {
  padding: var(--space-2) 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
  background: rgba(169, 204, 233, 0.98);
  backdrop-filter: blur(30px);
  border-bottom: 1px solid rgba(52, 124, 191, 0.15);
  box-shadow: 0 4px 30px rgba(28, 47, 64, 0.08);
  animation: navFadeIn 0.5s ease-out;
  height: 60px;
  overflow: visible;
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  height: 100%;
  position: relative;
  z-index: 1;
}

.nav__logo {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-family: var(--font-family-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  overflow: hidden;
  outline: none;
  flex-shrink: 0;
}

.nav__logo:focus {
  outline: none;
}

.nav__logo-img {
  height: 32px;
  width: auto;
  transition: transform var(--transition-fast), filter var(--transition-fast);
  filter: none !important;
  box-shadow: none !important;
}

/* Show/hide logo based on theme */
.nav__logo-img--light {
  display: block;
}

.nav__logo-img--dark {
  display: none;
}

[data-theme="dark"] .nav__logo-img--light {
  display: none;
}

[data-theme="dark"] .nav__logo-img--dark {
  display: block;
}


.nav__logo-text {
  color: var(--color-black);
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: var(--text-4xl);
  line-height: 1;
  margin-top: 5px; /* Align with center of mascot's head */
  margin-left: -8px; /* Move text further left from mascot */
}

.nav__menu {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  position: relative;
  z-index: 1;
  flex: 1;
  justify-content: center;
  max-width: 600px;
  margin: 0 auto;
}

/* Dropdown Menu Styles */
.nav__dropdown {
  position: relative;
  z-index: 1;
}

.nav__dropdown-toggle {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  color: var(--color-black);
  transition: color var(--transition-normal), background var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-size: var(--text-sm);
  line-height: 1.5;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  outline: none;
  background: none;
  border: none;
  cursor: pointer;
  gap: var(--space-1);
  white-space: nowrap;
}

.nav__dropdown-toggle::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: var(--space-1);
  transition: transform var(--transition-normal);
}

.nav__dropdown-toggle[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

.nav__dropdown-toggle:hover {
  color: var(--color-blue);
}

.nav__dropdown-menu {
  /* Absolute positioning relative to parent dropdown container allows precise placement below toggle.
     calc(100% + var(--space-2)) creates visual gap between toggle and menu, improving readability. */
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  /* Elevated shadow (24px blur) creates clear visual hierarchy, making dropdown appear above page content. */
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  min-width: 200px;
  /* Triple-state animation (opacity, visibility, transform) ensures smooth reveal/hide transitions.
     translateY(-10px) initial offset creates subtle slide-down effect on open. */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal);
  /* z-index: 10010 ensures dropdown appears above navbar (1001) and all page content, critical for usability. */
  z-index: 10010;
  padding: var(--space-2);
  border: 1px solid rgba(52, 124, 191, 0.1);
  /* pointer-events: none prevents interaction when hidden; toggled to auto when visible. */
  pointer-events: none;
  white-space: nowrap;
}

[data-theme="dark"] .nav__dropdown-menu {
  background: rgba(28, 47, 64, 0.98);
  border-color: rgba(96, 165, 250, 0.2);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.nav__dropdown[aria-expanded="true"] .nav__dropdown-menu,
.nav__dropdown.is-open .nav__dropdown-menu {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
  pointer-events: auto !important;
  display: block !important;
}

.nav__dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-black);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--radius-md);
  transition: background var(--transition-normal), color var(--transition-normal);
}

[data-theme="dark"] .nav__dropdown-item {
  color: #e2e8f0; /* Light gray for dropdown items */
}

.nav__dropdown-item:hover {
  background: rgba(52, 124, 191, 0.1);
  color: var(--color-blue);
}

[data-theme="dark"] .nav__dropdown-item:hover {
  background: rgba(96, 165, 250, 0.15);
  color: #7db8e8; /* Bright blue on hover */
}

.nav__link {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  color: var(--color-black);
  transition: color var(--transition-normal), background var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-size: var(--text-sm);
  line-height: 1.5;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  outline: none;
  white-space: nowrap;
}

.nav__link:focus {
  outline: none;
}

.nav__link:hover {
  color: var(--color-blue);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 3px;
  background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-blue-light) 100%);
  transition: width var(--transition-normal);
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

/* External link icon spacing for Docs link */
.nav__link .fa-up-right-from-square {
  margin-left: var(--space-2);
  font-size: 0.85em;
  line-height: 1;
}

.nav__menu--mobile .nav__link--mobile .fa-up-right-from-square {
  margin-left: var(--space-2);
  font-size: 0.85em;
  line-height: 1;
}


.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  /* flex-shrink: 0 prevents CTA buttons from compressing, ensuring they remain accessible and visible. */
  flex-shrink: 0;
}

.nav__cta {
  position: relative;
}

/* Navbar CTA button overrides - must be specific to override base .btn styles */
a.nav__cta--desktop.btn.btn--primary,
a.nav__cta--mobile.btn.btn--primary {
  position: relative;
  overflow: hidden;
  box-shadow: none !important;
  transition: all var(--transition-normal) !important;
  font-weight: 700 !important;
  text-transform: uppercase;
  letter-spacing: 0.05em !important;
  padding: 6px 18px !important;
  font-size: var(--text-xs) !important;
  height: 32px !important;
  min-height: 32px !important;
  max-height: 32px !important;
  line-height: 1 !important;
  border-width: 1px !important;
  border-radius: var(--radius-md) !important;
  background: var(--color-orange) !important;
  color: var(--color-white) !important;
  border-color: var(--color-orange) !important;
}

.nav__cta .btn.btn--primary {
  background: var(--color-orange) !important;
  color: var(--color-white) !important;
  border-color: var(--color-orange) !important;
}

.nav__cta .btn.btn--secondary {
  background-color: var(--color-white) !important;
  color: var(--color-orange) !important;
  border-color: var(--color-orange) !important;
}

.nav__cta .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(244, 243, 243, 0.2), transparent);
  transition: left var(--transition-slow);
}

.nav__cta .btn:hover::before {
  left: 100%;
}

.nav__cta .btn:hover {
  box-shadow: none;
}

/* Enhanced Navbar States */

/* Dark Mode Navbar Enhancements */
[data-theme="dark"] .nav {
  background: rgba(28, 47, 64, 0.95);
  border-bottom-color: rgba(52, 124, 191, 0.2);
}

[data-theme="dark"] .nav__link {
  color: #f8fafc; /* Near-white for nav links */
}

[data-theme="dark"] .nav__link:hover {
  color: #7db8e8; /* Bright blue on hover */
}

[data-theme="dark"] .nav__link.active {
  color: #f8fafc; /* Near-white for active link */
  background: rgba(52, 124, 191, 0.15);
}

[data-theme="dark"] .nav__dropdown-toggle {
  color: #f8fafc; /* Near-white for dropdown toggle */
}

[data-theme="dark"] .nav__dropdown-toggle:hover {
  color: #7db8e8; /* Bright blue on hover */
}

/* ===================================
   MOBILE MENU TOGGLE (HAMBURGER)
   =================================== */

/* Mobile Menu - Premium Hamburger Animation */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  z-index: 101;
  transition: all 0.3s ease;
  position: relative;
}

.mobile-menu-toggle:hover {
  background: transparent;
}

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

.mobile-menu-toggle:focus,
.mobile-menu-toggle:active,
.mobile-menu-toggle:focus-visible {
  outline: none !important;
  box-shadow: none !important;
}

/* Dark mode adjustments */
[data-theme="dark"] .mobile-menu-toggle {
  background: transparent;
}

[data-theme="dark"] .mobile-menu-toggle:hover {
  background: transparent;
}

/* Hamburger Lines (Closed State) */
.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--color-black);
  border-radius: 3px;
  transition: all 0.35s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: absolute;
}


/* Position each line absolutely for precise control */
.hamburger-line:nth-child(1) {
  top: 14px;
}

.hamburger-line:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger-line:nth-child(3) {
  bottom: 14px;
}

/* X Icon Transformation (Open State) */
/* Hamburger-to-X animation uses three-line transformation for smooth, recognizable state change.
     Each line transforms independently: top/bottom rotate to form X, middle fades out for clean appearance.
     This pattern provides clear visual feedback and follows established UX conventions. */
/* Top line: Rotates 45° and moves to center */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

/* Middle line: Scales to 0 and fades out */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateY(-50%) scale(0);
}

/* Bottom line: Rotates -45° and moves to center */
.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Button appearance when open */
.mobile-menu-toggle[aria-expanded="true"] {
  background: transparent;
}

[data-theme="dark"] .mobile-menu-toggle[aria-expanded="true"] {
  background: transparent;
}

/* ===================================
   RESPONSIVE NAVBAR STYLES
   =================================== */

/* Breakpoint: 1023px chosen as transition point where horizontal menu becomes cramped.
   Below this width, hamburger menu provides better UX than compressed navigation items.
   IMPORTANT: This section must come AFTER the .mobile-menu-toggle base styles so that
   the media query display:flex correctly overrides the base display:none. */
@media (max-width: 1023px) {
  .nav__menu {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  /* Hide desktop LOG IN from navbar bar at mobile — it lives in the dropdown instead */
  .nav__cta--desktop {
    display: none;
  }

  .nav__actions {
    gap: var(--space-3);
    margin-left: var(--space-4);
  }
}

/* Dropdown responsive adjustments for smaller desktop screens */
@media (max-width: 1200px) {
  .nav__menu {
    gap: var(--space-4);
  }

  .nav__dropdown-menu {
    min-width: 180px;
  }
}

/* Ensure last dropdown doesn't overflow on medium desktop screens */
@media (min-width: 1024px) and (max-width: 1200px) {
  .nav__dropdown:last-child .nav__dropdown-menu {
    right: 0;
    left: auto;
  }
}

/* Small Tablets & Large Mobile (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .nav__actions {
    gap: var(--space-4);
  }
}

/* Mobile Navigation (up to 767px) */
@media (max-width: 767px) {
  .nav__actions {
    gap: var(--space-3);
    margin-left: var(--space-4);
  }
}

/* Enhanced Navbar Interactions */
.nav__link.active {
  color: var(--color-black);
  background: rgba(52, 124, 191, 0.1);
}

.nav__link.active::after {
  width: 80%;
}

/* ===================================
   MOBILE NAVIGATION MENU
   =================================== */

/* Mobile Menu Container */
.nav__menu--mobile {
  position: fixed;
  top: 60px;
  right: 0;
  width: min(300px, 85vw);
  height: calc(100vh - 60px);
  background: rgba(244, 243, 243, 0.98);
  backdrop-filter: blur(30px);
  border-left: 1px solid var(--color-gray-200);
  padding: var(--space-6);
  transform: translateX(100%);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.nav__menu--mobile.active {
  transform: translateX(0);
  opacity: 1;
}

/* Backdrop overlay — sits behind the open mobile menu, above page content */
.nav__backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999; /* below nav__menu--mobile (1000) */
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.nav__backdrop.active {
  opacity: 1;
}

@media (max-width: 1023px) {
  .nav__backdrop {
    display: block;
  }
}

.nav__menu--mobile-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--space-2) var(--space-2);
  display: flex;
  flex-direction: column;
}

.nav__menu--mobile .nav__link--mobile {
  font-family: 'Inter', sans-serif;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-1);
  border-radius: var(--radius-md);
  text-align: right;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-black);
  text-decoration: none;
  transition: all var(--transition-normal);
  min-height: 44px;
}

.nav__menu--mobile .nav__link--mobile:hover {
  background: rgba(52, 124, 191, 0.1);
  color: var(--color-blue);
}

/* Mobile section headings (Product, Resources, About) */
.nav__mobile-section {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  padding: var(--space-3) var(--space-4) var(--space-1);
  margin: 0;
  text-align: right;
}

.nav__mobile-section:not(:first-child) {
  margin-top: var(--space-3);
}

/* Standalone Pricing link — visually distinct from grouped links */
.nav__link--mobile-standalone {
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
  color: var(--color-orange) !important;
}

[data-theme="dark"] .nav__mobile-section {
  color: var(--color-gray-600);
}

/* Mobile Actions Container */
.nav__mobile-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
}

/* Mobile LOG IN button */
.nav__cta--mobile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

/* Theme toggle row */
.nav__mobile-theme-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: var(--space-2) var(--space-4);
}

/* Dark Mode Mobile Menu Styles */
[data-theme="dark"] .nav__menu--mobile {
  background: rgba(28, 47, 64, 0.98);
  border-bottom-color: var(--color-gray-200);
}

[data-theme="dark"] .nav__menu--mobile .nav__link--mobile {
  color: #f8fafc;
}

[data-theme="dark"] .nav__menu--mobile .nav__link--mobile:hover {
  background: rgba(52, 124, 191, 0.2);
  color: #7db8e8;
}

[data-theme="dark"] .nav__mobile-actions {
  border-top-color: var(--color-gray-200);
}

/* Theme toggle dark mode styles are in theme-toggle.css */