/**
 * Navigation Styles
 * Mobile-First, Accessible Navigation
 */

.nav {
  position: relative;
  z-index: var(--z-sticky);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  width: 100%;
}

.nav__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .nav__container {
    padding: var(--space-4) var(--space-6);
  }
}

.nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.nav__logo:hover {
  transform: none;
}

.nav__logo:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.nav__logo-img {
  height: 32px;
  width: auto;
}

@media (min-width: 768px) {
  .nav__logo-img {
    height: 40px;
  }
}

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

/* Landing/Index logo mark (UP) - used across all pages for consistency */
.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 24px;
  border-radius: 999px;
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  text-shadow: 0 2px 9px rgba(37, 99, 235, 0.55);
}

/* Dark nav backgrounds (e.g. landing page light nav) - logo needs dark color */
.nav--landing-premium .nav__logo-mark,
.landing-page .nav__logo-mark {
  color: #0f172a;
  text-shadow: 0 2px 9px rgba(37, 99, 235, 0.35);
}

.nav__menu {
  display: none;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

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

.nav__link {
  color: var(--color-white);
  text-decoration: none;
  font-weight: var(--weight-medium);
  font-size: var(--font-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.nav__link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  transform: translateY(-1px);
}

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

.nav__link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav__link.active {
  background: rgba(255, 255, 255, 0.15);
  font-weight: var(--weight-semibold);
}

.nav__user {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: 14px;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  user-select: none;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.nav__user:hover,
.nav__user:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  outline: none;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.nav__user[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.08);
}

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

.nav__user-info {
  display: none;
  flex-direction: column;
  align-items: flex-end;
}

@media (min-width: 1024px) {
  .nav__user-info {
    display: flex;
  }
}

.nav__user-name {
  color: var(--color-white);
  font-weight: var(--weight-semibold);
  font-size: var(--font-sm);
  line-height: var(--line-tight);
}

.nav__user-role {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-xs);
  line-height: var(--line-tight);
}

.nav__user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255, 255, 255, 0.3);
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.nav__user-avatar--placeholder {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--weight-bold);
  font-size: var(--font-lg);
}

.nav__user-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

.nav__user-avatar-badge {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #2196F3;
  color: white;
  font-size: 11px;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--glass-bg-strong, rgba(255, 255, 255, 0.95));
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
  line-height: 1;
}

.nav__dropdown-icon {
  width: 12px;
  height: 12px;
  color: rgba(255, 255, 255, 0.8);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

/* --- Desktop dropdown: luxury panel --- */
/* Desktop: wrap positions dropdown under user pill */
.nav__user-dropdown-wrap {
  position: relative;
}

.nav__user-header {
  display: none;
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-3));
  right: 0;
  background: linear-gradient(165deg, rgba(18, 28, 45, 0.98) 0%, rgba(12, 20, 35, 0.99) 100%);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: var(--space-2);
  min-width: 260px;
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.08),
    0 0 60px -12px rgba(90, 200, 250, 0.12);
  display: flex;
  flex-direction: column;
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.97);
  transition: opacity 0.22s cubic-bezier(0.4, 0, 0.2, 1), transform 0.22s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.22s;
  overflow: hidden;
  pointer-events: none;
}

.nav__dropdown--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  animation: dropdownSlideIn 0.28s cubic-bezier(0.32, 0.72, 0, 1);
}

@keyframes dropdownSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.nav__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  border-radius: 12px;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  position: relative;
  box-sizing: border-box;
}

.nav__dropdown-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateX(3px);
}

.nav__dropdown-link:active {
  transform: translateX(2px);
}

.nav__dropdown-link:focus-visible {
  outline: 2px solid rgba(125, 211, 252, 0.6);
  outline-offset: -2px;
  background: rgba(255, 255, 255, 0.08);
}

.nav__dropdown-icon-item {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0.95;
  color: rgba(255, 255, 255, 0.92);
}

.nav__dropdown-icon-item .up-icon-svg {
  width: 20px;
  height: 20px;
}

.nav__dropdown-link--primary {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.28) 0%, rgba(56, 189, 248, 0.2) 100%);
  border: 1px solid rgba(125, 211, 252, 0.35);
  font-weight: 600;
  margin: var(--space-2) 0;
  padding: var(--space-4) var(--space-4);
  color: #e0f2fe;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 122, 255, 0.2);
}

.nav__dropdown-link--primary:hover {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.35) 0%, rgba(56, 189, 248, 0.28) 100%);
  border-color: rgba(125, 211, 252, 0.5);
  color: #fff;
  transform: translateX(3px);
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.25);
}

.nav__dropdown-link--danger {
  color: #fca5a5;
  margin-top: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-4);
}

.nav__dropdown-link--danger:hover {
  background: rgba(239, 68, 68, 0.12);
  color: #fecaca;
}

/* Mobile Navigation — luxury hamburger */
.nav__mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  cursor: pointer;
  padding: var(--space-2);
  z-index: var(--z-fixed);
  min-width: 48px;
  min-height: 48px;
  justify-content: center;
  align-items: center;
  border-radius: 12px;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.nav__mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

.nav__mobile-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

.nav__mobile-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform 0.25s cubic-bezier(0.32, 0.72, 0, 1), opacity 0.2s;
  display: block;
  transform-origin: center;
}

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

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

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

.nav__overlay {
  display: none;
}

body.nav-menu-open {
  overflow: hidden;
}

/* Mobile Menu — premium drawer: user header top, nav, account section */
@media (max-width: 767px) {
  body {
    overflow-x: hidden;
  }

  .nav {
    z-index: calc(var(--z-modal) + 20);
  }

  .nav__overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: min(320px, 84vw);
    background: rgba(6, 12, 22, 0.88);
    border: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.32, 0.72, 0, 1), visibility 0.3s;
    z-index: calc(var(--z-modal) + 5);
  }

  .nav__overlay--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 84vw);
    max-width: 100%;
    height: 100vh;
    height: 100dvh;
    background: linear-gradient(180deg, #0c1428 0%, #0a1120 48%, #080d1a 100%);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-8) var(--space-6) var(--space-10);
    gap: 0;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.32s cubic-bezier(0.32, 0.72, 0, 1), visibility 0.32s;
    z-index: calc(var(--z-modal) + 10);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    box-shadow:
      -32px 0 64px rgba(0, 0, 0, 0.55),
      inset 32px 0 48px -24px rgba(0, 0, 0, 0.25),
      0 0 0 1px rgba(255, 255, 255, 0.06) inset;
    -webkit-overflow-scrolling: touch;
  }

  .nav__menu--open {
    transform: translateX(0);
    visibility: visible;
  }

  /* 1. TOP: User header — avatar left, name + role right */
  .nav__user-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
    border-radius: 16px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25), 0 1px 0 0 rgba(255, 255, 255, 0.06) inset;
    flex-shrink: 0;
  }

  .nav__user-header .nav__user-avatar-wrap {
    flex-shrink: 0;
    order: 0;
  }

  .nav__user-header .nav__user-avatar,
  .nav__user-header .nav__user-avatar--placeholder {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.22);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    object-fit: cover;
  }

  .nav__user-header .nav__user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    min-width: 0;
  }

  .nav__user-header .nav__user-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.98);
    letter-spacing: 0.01em;
    line-height: 1.3;
  }

  .nav__user-header .nav__user-role {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.65);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  /* Hide desktop pill on mobile */
  .nav__menu .nav__user-dropdown-wrap .nav__user {
    display: none;
  }

  /* 2. PRIMARY NAV — list below user header */
  .nav__menu > .nav__link {
    width: 100%;
    padding: 0 var(--space-4);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    min-height: 52px;
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.92);
    -webkit-tap-highlight-color: transparent;
    border-radius: 12px;
    transition: background 0.2s ease, color 0.2s ease;
    border-bottom: 1px solid transparent;
    margin-bottom: 2px;
  }

  .nav__menu > .nav__link:hover,
  .nav__menu > .nav__link:active {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
  }

  .nav__menu > .nav__link.active {
    color: #7dd3fc;
    background: rgba(125, 211, 252, 0.1);
    border-bottom-color: rgba(125, 211, 252, 0.35);
  }

  .nav__menu .btn {
    width: 100%;
    min-height: 52px;
    justify-content: center;
    margin-top: var(--space-2);
    -webkit-tap-highlight-color: transparent;
    border-radius: 12px;
  }

  .nav__menu .btn-glass {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-white);
  }

  .nav__menu .btn-primary {
    margin-top: var(--space-3);
    font-weight: 600;
  }

  /* Spacer between primary nav and account section */
  .nav__menu > .nav__user-dropdown-wrap {
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
  }

  /* 3. ACCOUNT SECTION — dropdown in flow, always visible (Profile, Switch, Logout) */
  .nav__menu .nav__user-dropdown-wrap .nav__dropdown {
    position: static;
    display: flex;
    flex-direction: column;
    width: 100%;
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    animation: none;
    transition: none;
    gap: 2px;
    min-width: 0;
    overflow: visible;
  }

  .nav__menu .nav__user-dropdown-wrap .nav__dropdown-link {
    padding: 0 var(--space-4);
    min-height: 48px;
    border-radius: 10px;
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
  }

  .nav__menu .nav__user-dropdown-wrap .nav__dropdown-link--primary {
    margin: var(--space-2) 0 0;
  }

  .nav__menu .nav__user-dropdown-wrap .nav__dropdown-icon {
    display: none;
  }
}

.footer__item--social {
  display: flex;
  align-items: center;
}

.footer__link--social {
  display: inline-block;
  font-weight: inherit;
  font-size: inherit;
  padding: var(--space-2);
  line-height: inherit;
}

.footer__social-inline {
  margin-top: var(--space-3);
}

/* Breadcrumbs */
.breadcrumbs {
  padding: var(--space-4) 0;
}

.breadcrumbs__list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  flex-wrap: wrap;
}

.breadcrumbs__item {
  display: flex;
  align-items: center;
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.breadcrumbs__item:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-2);
  color: var(--text-tertiary);
}

.breadcrumbs__link {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-base);
}

.breadcrumbs__link:hover {
  color: var(--color-primary-dark);
}

.breadcrumbs__current {
  color: var(--text-primary);
  font-weight: var(--weight-medium);
}