/* Volkin Reborn — Navbar */

/* ========================================
   8. MENU BAR (navbar)
   ======================================== */
.navbar {
  position: fixed;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-navbar);

  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.625rem 0.875rem 0.625rem 1.25rem;

  background: var(--navbar-bg);
  backdrop-filter: blur(var(--navbar-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--navbar-blur)) saturate(180%);
  border: 1px solid var(--navbar-border);
  border-radius: 9999px;
  box-shadow: var(--navbar-shadow);

  transition:
    background var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-magnetic);

  /* Magnetic effect data */
  --magnetic-strength: var(--magnetic-navbar);
}

/* Stan przy scrollowaniu */
.navbar--scrolled {
  background: var(--navbar-bg-scrolled, rgba(255, 255, 255, 0.75));
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.navbar:hover,
.navbar--scrolled:hover {
  background: var(--navbar-bg-hover, rgba(255, 255, 255, 0.65));
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.1),
    0 2px 6px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    var(--glow-outer);
}

.navbar__logo {
  font-weight: 800;
  font-size: 1.125rem;
  color: #1a1a2e;
  text-decoration: none;
  letter-spacing: -0.02em;
  padding-right: 0.2rem;
  display: flex;
  align-items: center;
}

.navbar__logo-img {
  height: 22px;
  width: auto;
  display: block;
  position: relative;
  top: -2px;
  left: 1px;
}

/* Light mode: show dark logo, hide light logo */
.navbar__logo-img--light { display: block; }
.navbar__logo-img--dark { display: none; }

/* Dark mode: show light logo, hide dark logo */
.dark .navbar__logo-img--light { display: none; }
.dark .navbar__logo-img--dark { display: block; }

/* Wrapper dla menu + slider (slider poza <ul> dla poprawnego HTML) */
.navbar__menu-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.navbar__menu {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__link {
  position: relative;
  z-index: 1;
  padding: 0.5rem 1rem;
  color: #4a5568;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: 9999px;
  white-space: nowrap;
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
}

/* Rozszerzony obszar hover - do krawędzi navbaru + 2px poza */
.navbar__link::before {
  content: '';
  position: absolute;
  top: calc(-0.625rem - 2px);
  bottom: calc(-0.625rem - 2px);
  left: 0;
  right: 0;
}

.navbar__link:hover {
  color: var(--color-primary);
  background: rgba(68, 136, 239, 0.08);
}

.navbar__link--active {
  color: var(--color-primary);
  background: rgba(68, 136, 239, 0.1);
}

/* Sliding highlight - płynne przejście między linkami */
.navbar__slider {
  position: absolute;
  background: rgba(68, 136, 239, 0.1);
  border-radius: 9999px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  opacity: 0;
  z-index: 0;
}

.navbar__slider--visible {
  opacity: 1;
}

/* Gdy slider jest aktywny, ukryj tło z linków */
.navbar__menu-wrapper:hover .navbar__link,
.navbar__menu-wrapper:hover .navbar__link--active {
  background: transparent;
}

/* Kolor linku przy hover nadal zmieniamy */
.navbar__menu-wrapper:hover .navbar__link:hover {
  color: var(--color-primary);
}

/* Gdy kursor jest w menu, ukryj efekt active na nieaktywnych linkach */
.navbar__menu-wrapper:hover .navbar__link--active:not(:hover) {
  color: #4a5568;
}

/* Navbar CTA button */
.navbar .btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

/* Cursor glow */
.navbar .glow-effect {
  position: absolute;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(68, 136, 239, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-slow);
  transform: translate(-50%, -50%);
  z-index: -1;
  filter: blur(20px);
}

/* .navbar:hover .glow-effect — kontrolowane przez JS (CursorGlow) */

/* Hamburger button (mobile) */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: var(--z-hamburger);
}

.navbar__hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: #1a1a2e;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hamburger -> X animation */
.navbar__hamburger.active .navbar__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.active .navbar__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger.active .navbar__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay - fullscreen liquid glass (poza navbarem) */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;

  /* Liquid glass effect */
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);

  z-index: var(--z-overlay);
}

.mobile-menu-overlay--open {
  display: flex;
  animation: overlayFadeIn 0.3s ease;
}

@keyframes overlayFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.mobile-menu-overlay__link {
  font-size: 1.35rem;
  font-weight: 600;
  padding: 1rem 2.5rem;
  border-radius: 9999px;
  color: #1a1a2e;
  text-decoration: none;
  transition: all 0.2s ease;
}

.mobile-menu-overlay__link:hover {
  background: rgba(68, 136, 239, 0.15);
  color: var(--color-primary);
}

/* Dark mode */
.dark .mobile-menu-overlay {
  background: rgba(40, 40, 55, 0.92);
}

.dark .mobile-menu-overlay__link {
  color: #e5e5e5;
}

.dark .mobile-menu-overlay__link:hover {
  background: rgba(68, 136, 239, 0.25);
  color: #ffffff;
}