/* ================================
   Navigation - Premium Design
   ================================ */

/* Navigation Variables */
:root {
  /* Navigation specific variables */
  --nav-height: 68px;
  --nav-bg: rgba(255, 255, 255, 0.72);
  --nav-bg-scrolled: rgba(255, 255, 255, 0.95);
  --nav-border: rgba(0, 0, 0, 0.08);
  --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  --nav-shadow-scrolled: 0 2px 12px rgba(0, 0, 0, 0.08);

  /* Navigation text colors */
  --nav-text: #1d1d1f;
  --nav-text-secondary: #6e6e73;
  --nav-text-hover: #000000;
  --nav-text-active: #0071e3;

  /* Navigation spacing */
  --nav-padding-x: 2rem;
  --nav-item-spacing: 2rem;
  --nav-font-size: 14px;
  --nav-font-weight: 400;

  /* Dropdown styles */
  --dropdown-bg: #ffffff;
  --dropdown-border: rgba(0, 0, 0, 0.08);
  --dropdown-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  --dropdown-radius: 14px;
  --dropdown-padding: 0.5rem;
  --dropdown-item-padding: 0.75rem 1rem;
  --dropdown-item-radius: 8px;

  /* Transition */
  --nav-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --dropdown-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark theme navigation */
[data-theme="dark"] {
  --nav-bg: rgba(10, 10, 15, 0.72);
  --nav-bg-scrolled: rgba(10, 10, 15, 0.95);
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  --nav-shadow-scrolled: 0 2px 12px rgba(0, 0, 0, 0.3);

  --nav-text: #f5f5f7;
  --nav-text-secondary: #a1a1a6;
  --nav-text-hover: #ffffff;
  --nav-text-active: #4fc3f7;

  --dropdown-bg: #1a1a2e;
  --dropdown-border: rgba(255, 255, 255, 0.1);
  --dropdown-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ================================
   Navigation Container
   ================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--nav-transition);
}

.navbar.scrolled {
  background: var(--nav-bg-scrolled);
  border-bottom-color: var(--nav-border);
  box-shadow: var(--nav-shadow-scrolled);
}

.navbar-container {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--nav-padding-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-container.container-fluid {
  max-width: 1200px;
}

/* ================================
   Navigation Logo
   ================================ */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--nav-text);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  transition: var(--nav-transition);
}

.navbar-logo:hover {
  opacity: 0.7;
}

.navbar-logo .logo-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.navbar-logo .logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.navbar-logo .logo-text {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-right: var(--nav-item-spacing);
}

/* ================================
   Navigation Menu
   ================================ */
.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--nav-item-spacing);
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 992px) {
  .navbar-collapse {
    flex: 1 1 auto;
    justify-content: center;
  }

  .navbar-menu {
    justify-content: center;
  }
}

.navbar-item {
  position: relative;
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0;
  color: var(--nav-text-secondary);
  font-size: var(--nav-font-size);
  font-weight: var(--nav-font-weight);
  text-decoration: none;
  transition: var(--nav-transition);
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

.navbar-link:hover,
.navbar-link:focus {
  color: var(--nav-text-hover);
  outline: none;
}

.navbar-link.active {
  color: var(--nav-text-active);
  font-weight: 600;
}

.navbar-link-icon {
  width: 12px;
  height: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.navbar-link.dropdown-toggle::after {
  display: none;
}

.navbar-item.has-dropdown:hover .navbar-link-icon,
.navbar-item.has-dropdown:focus-within .navbar-link-icon {
  transform: rotate(180deg);
}

/* ================================
   Dropdown Menu
   ================================ */
.navbar-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 220px;
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  border-radius: var(--dropdown-radius);
  box-shadow: var(--dropdown-shadow);
  padding: var(--dropdown-padding);
  opacity: 0;
  visibility: hidden;
  transition: var(--dropdown-transition);
  pointer-events: none;
}

.navbar-item.has-dropdown:hover .navbar-dropdown,
.navbar-item.has-dropdown:focus-within .navbar-dropdown,
.navbar-item.has-dropdown .navbar-dropdown.show,
.navbar-item.has-mega-menu .navbar-mega-menu.show {
  display: block;
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.navbar-dropdown-item {
  display: block;
  padding: var(--dropdown-item-padding);
  color: var(--nav-text);
  font-size: 14px;
  text-decoration: none;
  border-radius: var(--dropdown-item-radius);
  transition: var(--nav-transition);
}

.navbar-dropdown-item.active {
  color: var(--nav-text-active);
  font-weight: 600;
}

.navbar-dropdown-item:hover,
.navbar-dropdown-item:focus {
  background: rgba(0, 113, 227, 0.08);
  color: var(--nav-text-active);
  outline: none;
}

[data-theme="dark"] .navbar-dropdown-item:hover,
[data-theme="dark"] .navbar-dropdown-item:focus {
  background: rgba(79, 195, 247, 0.12);
}

/* Mega Menu */
.navbar-mega-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 600px;
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  border-radius: var(--dropdown-radius);
  box-shadow: var(--dropdown-shadow);
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--dropdown-transition);
  pointer-events: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.navbar-item.has-mega-menu:hover .navbar-mega-menu,
.navbar-item.has-mega-menu:focus-within .navbar-mega-menu,
.navbar-item.has-mega-menu .navbar-mega-menu.show {
  display: grid;
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.mega-menu-column {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mega-menu-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--nav-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.5rem 1rem;
  margin-bottom: 0.25rem;
}

/* ================================
   Navigation Actions
   ================================ */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 992px) {
  .navbar-actions {
    order: 3;
  }

  .navbar-toggle {
    order: 4;
  }
}

.navbar-search {
  position: relative;
}

.navbar-search-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: var(--nav-text);
  cursor: pointer;
  transition: var(--nav-transition);
}

.navbar-search-btn:hover {
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .navbar-search-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.navbar-search-btn svg {
  width: 18px;
  height: 18px;
}

.navbar-login-btn {
  padding: 0.5rem 1.25rem;
  background: var(--nav-text);
  color: var(--dropdown-bg);
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 980px;
  cursor: pointer;
  transition: var(--nav-transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-login-btn:hover {
  opacity: 0.85;
  transform: scale(1.02);
}

.navbar-login-btn:active {
  transform: scale(0.98);
}

/* ================================
   Mobile Navigation
   ================================ */
.navbar-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.navbar-toggle span {
  width: 20px;
  height: 2px;
  background: var(--nav-text);
  border-radius: 2px;
  transition: var(--nav-transition);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.navbar-mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--dropdown-bg);
  padding: 2rem;
  overflow-y: auto;
  transform: translateY(-100%);
  opacity: 0;
  transition: var(--nav-transition);
}

.navbar-mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
}

.navbar-mobile-menu-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.navbar-mobile-menu-item {
  border-bottom: 1px solid var(--nav-border);
}

.navbar-mobile-menu-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  color: var(--nav-text);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  transition: var(--nav-transition);
}

.navbar-mobile-menu-link:hover {
  color: var(--nav-text-active);
}

.navbar-mobile-menu-actions {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 1024px) {
  .navbar-menu {
    gap: 1.5rem;
  }

  .navbar-container {
    padding: 0 1.5rem;
  }
}

@media (max-width: 991.98px) {
  .navbar-toggle {
    display: flex;
  }

  .navbar-actions .navbar-login-btn {
    display: none;
  }

  .navbar-container {
    padding: 0 1rem;
  }

  .navbar-logo .logo-text {
    font-size: 14px;
  }

  .navbar-collapse {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    padding: 0.75rem 1rem 1rem;
    background: var(--dropdown-bg);
    border-top: 1px solid var(--nav-border);
    box-shadow: var(--nav-shadow-scrolled);
  }

  .navbar-menu {
    align-items: stretch;
    gap: 0.25rem;
  }

  .navbar-link {
    width: 100%;
    padding: 0.75rem 0.875rem;
    border-radius: var(--radius-sm);
  }

  .navbar-link:hover,
  .navbar-link:focus,
  .navbar-link.active {
    background: rgba(79, 195, 247, 0.1);
  }

  .navbar-dropdown,
  .navbar-mega-menu {
    position: static !important;
    transform: none !important;
    min-width: 0;
    width: 100%;
    margin: 0;
    border: 0;
    border-radius: var(--radius-sm);
    box-shadow: none;
  }

  .navbar-item.has-dropdown:hover .navbar-dropdown,
  .navbar-item.has-mega-menu:hover .navbar-mega-menu {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .navbar-item.has-dropdown .navbar-dropdown.show,
  .navbar-item.has-mega-menu .navbar-mega-menu.show {
    display: block;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .navbar-item.has-mega-menu .navbar-mega-menu.show {
    display: grid;
  }
}

@media (max-width: 480px) {
  :root {
    --nav-height: 60px;
  }

  .navbar-logo-icon {
    width: 28px;
    height: 28px;
  }
}

/* ================================
   Accessibility
   ================================ */
.navbar-link:focus-visible,
.navbar-dropdown-item:focus-visible,
.navbar-search-btn:focus-visible,
.navbar-login-btn:focus-visible,
.navbar-toggle:focus-visible,
.navbar-toggler:focus-visible {
  outline: 2px solid var(--nav-text-active);
  outline-offset: 2px;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}