/*=============== NAVBAR ===============*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-dark);
  z-index: var(--z-fixed);
  transition: background-color 0.5s cubic-bezier(0.4, 0, 0.2, 1), 
              box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1), 
              top 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Pseudo-element for smooth backdrop-filter transition without breaking position: fixed children */
.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  z-index: -1;
  transition: backdrop-filter 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              -webkit-backdrop-filter 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

/* Home page starts transparent */
.header--home {
  background-color: transparent;
  box-shadow: none;
}

.header--home.scroll-header {
  background-color: rgba(18, 20, 29, 0.85) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header--home.scroll-header::before {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hide-header {
  /* Only applied on desktop now via media query */
}

.nav {
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  color: #fff;
  display: inline-flex;
  align-items: center;
  column-gap: .5rem;
  font-family: var(--title-font);
  font-weight: var(--font-bold);
  font-size: 1.1rem;
  letter-spacing: 1px;
}

.nav__logo i {
  color: var(--second-color);
  font-size: 1.25rem;
}

@media screen and (max-width: 340px) {
  .nav__logo {
    font-size: 0.9rem;
    column-gap: 0.25rem;
  }
}

.nav__button {
  display: inline-block;
  font-size: var(--smaller-font-size);
  padding: .6rem 1.2rem;
}

@media screen and (max-width: 340px) {
  .nav__button {
    padding: 0.5rem 0.8rem;
    font-size: 0.7rem;
  }
}

.nav__indicator {
  display: none;
}

/* Mobile Bottom Bar Navigation */
@media screen and (max-width: 819.98px) {
  .nav__menu {
    position: fixed;
    bottom: 1.5rem;
    left: 0;
    right: 0;
    width: 92%;
    max-width: 420px;
    margin: 0 auto;
    background-color: #12141d;
    padding: 0.35rem 2rem;
    border-radius: 2rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    z-index: var(--z-fixed);
    transition: bottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .hide-bottom-nav {
    bottom: -100px !important;
  }

  .nav__list {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }

  .nav__item {
    flex: 1;
    display: flex;
    justify-content: center;
    z-index: 3; /* Render on top of active bubble */
  }

  .nav__link {
    color: rgba(255, 255, 255, 0.45);
    display: flex;
    flex-direction: column;
    align-items: center;
    row-gap: 0.15rem;
    padding: 0.5rem 0;
    width: 100%;
    transition: color 0.3s ease;
  }

  .nav__link i {
    font-size: 1.25rem;
    padding: 0;
    border-radius: 0;
    background-color: transparent !important;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  }

  .nav__link span {
    font-size: .52rem;
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  /* Keyframes for the fluid fade rise pop-in transition */
  @keyframes navIconRise {
    0% {
      transform: translateY(0) scale(0.85);
      opacity: 0.3;
    }
    100% {
      transform: translateY(-22px) scale(1.15);
      opacity: 1;
    }
  }

  @keyframes navBubblePop {
    0% {
      transform: translateX(-50%) translateY(12px) scale(0.5);
      opacity: 0;
    }
    100% {
      transform: translateX(-50%) translateY(0) scale(1);
      opacity: 1;
    }
  }

  /* Active Link - Liquid Style Pop */
  .active-link {
    color: #fff !important;
  }

  .active-link i {
    animation: navIconRise 0.4s cubic-bezier(0.25, 1, 0.5, 1) forwards;
    color: #12141d !important;
  }

  /* The Sliding Liquid Indicator Wrapper */
  .nav__indicator {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    width: calc(100% / 6);
    height: 100%;
    z-index: 2;
    transform: translateX(calc(var(--active-index) * 100%));
    pointer-events: none;
  }

  /* Centered white bubble circle */
  .nav__indicator-bubble {
    position: absolute;
    top: -22px;
    left: 50%;
    transform: translateX(-50%);
    width: 44px;
    height: 44px;
    background-color: #fff;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    animation: navBubblePop 0.4s cubic-bezier(0.25, 1, 0.5, 1) forwards;
  }

  /* Concave left/right wing curves masking the straight top edge of the navbar */
  .nav__indicator-bubble::before,
  .nav__indicator-bubble::after {
    content: '';
    position: absolute;
    top: 22px;
    width: 16px;
    height: 16px;
    background-color: transparent;
  }

  .nav__indicator-bubble::before {
    left: -16px;
    border-radius: 0 16px 0 0;
    box-shadow: 8px 8px 0 8px #12141d;
  }

  .nav__indicator-bubble::after {
    right: -16px;
    border-radius: 16px 0 0 0;
    box-shadow: -8px 8px 0 8px #12141d;
  }

  .nav__toggle, 
  .nav__close {
    display: none;
  }
}

/* Desktop Navigation */
@media screen and (min-width: 820px) {
  .nav {
    height: var(--header-height);
    column-gap: 1rem;
  }

  .nav__logo {
    font-size: 1.1rem;
    white-space: nowrap;
  }

  .nav__menu {
    margin-left: auto;
  }

  .nav__list {
    display: flex;
    column-gap: 1rem;
  }

  .nav__link {
    display: flex;
    align-items: center;
    column-gap: 0.25rem;
    color: #fff;
    font-weight: var(--font-bold);
    font-size: 0.82rem;
    text-transform: capitalize;
    letter-spacing: 0.3px;
    white-space: nowrap;
    transition: var(--transition);
  }

  .nav__link i {
    display: inline-block;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
  }

  .nav__link:hover,
  .nav__link:hover i,
  .nav__link:hover span {
    color: var(--first-color);
  }

  .active-link,
  .active-link i,
  .active-link span {
    color: var(--first-color) !important;
  }

  .nav__toggle, 
  .nav__close {
    display: none;
  }
}

@media screen and (min-width: 1024px) {
  .nav {
    column-gap: 2rem;
  }

  .nav__logo {
    font-size: 1.25rem;
  }

  .nav__list {
    column-gap: 1.75rem;
  }

  .nav__link {
    column-gap: 0.5rem;
  }

  .nav__link i {
    font-size: 1.25rem;
  }
}

@media screen and (min-width: 1200px) {
  .nav {
    column-gap: 3.5rem;
  }

  .nav__list {
    column-gap: 3.5rem;
  }
}

/* Transparent → Solid on scroll */
.scroll-header {
  background-color: rgba(18, 20, 29, 0.85) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.scroll-header::before {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

@media screen and (min-width: 1024px) {
  .hide-header {
    top: -100px;
  }
}

/*=============== LANGUAGE SELECTOR ===============*/
.nav__lang-select {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 2rem;
  padding: 0.45rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.nav__lang-select:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--first-color);
}

.nav__lang-select option {
  background: #12141d;
  color: #fff;
}