/* ============================================================
   ASTRA TECH — Premium Navbar & Dropdown System
   ============================================================ */

/* ---- Glass Navbar ---- */
.navbar-glass {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  padding: 0.75rem 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

/* Spacer so content doesn't hide behind fixed navbar */
body {
  padding-top: 76px;
}

/* ---- Brand / Logo ---- */
.navbar-glass .navbar-brand {
  padding: 0;
  margin-right: 2rem;
  display: inline-flex;
  align-items: center;
}
.navbar-glass .navbar-brand img {
  height: 38px;
  max-height: 38px;
  width: auto;
  object-fit: contain;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.navbar-glass .navbar-brand:hover img {
  opacity: 0.9;
  transform: scale(1.02);
}

/* ---- Nav Links ---- */
.navbar-glass .navbar-nav .nav-link {
  position: relative;
  color: #243048 !important;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 14.5px;
  letter-spacing: 0.01em;
  padding: 0.65rem 1.1rem !important;
  transition: color 0.25s ease;
}

.navbar-glass .navbar-nav .nav-link:hover,
.navbar-glass .navbar-nav .nav-link:focus {
  color: #4353ff !important;
}

/* Underline hover animation */
.navbar-glass .navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0.35rem;
  left: 1.1rem;
  right: 1.1rem;
  height: 2px;
  background: #4353ff;
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-glass .navbar-nav .nav-link:hover::after,
.navbar-glass .navbar-nav .nav-item.show .nav-link::after {
  transform: scaleX(1);
}

/* Remove underline from dropdown toggles (the caret is enough) */
.navbar-glass .navbar-nav .dropdown-toggle::after {
  display: none; /* hide Bootstrap default caret */
}

/* Custom caret icon */
.navbar-glass .nav-link .fa-angle-down {
  font-size: 11px;
  margin-left: 5px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
}

.navbar-glass .nav-item.dropdown:hover .fa-angle-down,
.navbar-glass .nav-item.dropdown.show .fa-angle-down {
  transform: rotate(180deg);
  color: #4353ff;
}

/* ---- Dropdown Menu ---- */
.navbar-glass .dropdown-menu {
  display: block !important;      /* always in DOM for transition */
  visibility: hidden;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0s 0.25s; /* delay visibility on hide */
  min-width: 240px;
  padding: 0.6rem 0.5rem;
  margin-top: 0.5rem !important;
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border: 1px solid rgba(67, 83, 255, 0.12) !important;
  border-radius: 14px !important;
  box-shadow: 0 12px 40px rgba(19, 24, 67, 0.10),
              0 2px 8px rgba(67, 83, 255, 0.04) !important;
  z-index: 9999;
}

/* Show on hover & Bootstrap .show class */
.navbar-glass .nav-item.dropdown:hover > .dropdown-menu,
.navbar-glass .nav-item.dropdown.show > .dropdown-menu {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0s 0s; /* immediate visibility on show */
}

/* ---- Dropdown Items ---- */
.navbar-glass .dropdown-item {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 450;
  color: #243048;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.navbar-glass .dropdown-item:hover,
.navbar-glass .dropdown-item:focus {
  background-color: rgba(67, 83, 255, 0.06);
  color: #4353ff;
  transform: translateX(4px);
}

.navbar-glass .dropdown-item:active {
  background-color: rgba(67, 83, 255, 0.12);
}

/* ---- CTA Button ---- */
.navbar-glass .btn-nav-cta {
  font-family: 'Inter', sans-serif;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.55rem 1.6rem;
  border-radius: 100px;
  background: #4353ff;
  color: #fff;
  border: none;
  box-shadow: 0 4px 14px rgba(67, 83, 255, 0.25);
  transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.navbar-glass .btn-nav-cta:hover {
  background: #3442e6;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(67, 83, 255, 0.35);
  color: #fff;
}

.navbar-glass .btn-nav-cta i {
  font-size: 12px;
  margin-left: 6px;
  transition: transform 0.25s ease;
}

.navbar-glass .btn-nav-cta:hover i {
  transform: translateX(3px);
}

/* ---- Mobile Toggler ---- */
.navbar-glass .navbar-toggler {
  border: 1.5px solid rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  padding: 0.35rem 0.6rem;
  transition: border-color 0.2s ease;
}

.navbar-glass .navbar-toggler:focus {
  box-shadow: none;
  border-color: rgba(0, 0, 0, 0.3);
}

.navbar-glass .navbar-toggler-icon {
  width: 1.25em;
  height: 1.25em;
}

/* ---- Mobile dropdown (stacked) ---- */
@media (max-width: 991.98px) {
  body {
    padding-top: 68px;
  }

  .navbar-glass {
    padding: 0.5rem 0;
  }

  .navbar-glass .navbar-collapse {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    margin-top: 0.75rem;
    padding: 1rem;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  }

  .navbar-glass .navbar-nav .nav-link {
    padding: 0.7rem 0.75rem !important;
    font-size: 15px;
  }

  .navbar-glass .navbar-nav .nav-link::after {
    display: none;
  }

  .navbar-glass .dropdown-menu {
    position: static !important;
    box-shadow: none !important;
    border: none !important;
    background: rgba(0, 0, 0, 0.02) !important;
    backdrop-filter: none !important;
    border-radius: 10px !important;
    margin-top: 0 !important;
    padding: 0.25rem 0.5rem;
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .navbar-glass .dropdown-item {
    font-size: 13.5px;
    padding: 0.5rem 1rem;
  }

  .navbar-glass .btn-nav-cta {
    width: 100%;
    text-align: center;
    margin-top: 0.5rem;
    padding: 0.7rem 1.5rem;
  }
}