.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    background-color: #88AFE6;
    box-shadow: 0 2px 10px rgba(136,175,230,0.3);
    width: 100%;
    font-family: 'Raleway', sans-serif;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1002;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--card-shadow);

    /* smooth, GPU-accelerated animation */
    transition: transform 0.28s cubic-bezier(.2,.9,.2,1), box-shadow 0.28s ease, opacity 0.22s ease;
    will-change: transform;
    transform: translateY(0);
}

/* Headroom-like states */
.navbar.nav--pinned {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.navbar.nav--unpinned {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

/* at very top */
.navbar.nav--top {
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* layout */
.nav-logo {
    padding-left: 2rem;
    flex: 1;
}
.nav-logo img {
    height: 4rem;
    margin-top: -0.5rem;
    margin-bottom: -0.5rem;
    transition: transform 0.3s ease;
}
.nav-logo img:hover { transform: scale(1.1); }

.nav-links {
    flex: 2;
    display: flex;
    justify-content: center;
    gap: 2rem;
    align-items: center;
}
.dropdown { position: relative; display: inline-block; }

.dropbtn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    color: white;
    transition: all 0.3s ease;
    position: relative;
    font-family: 'Raleway', sans-serif;
    font-weight: 500;
    letter-spacing: 0.5px;
    font-size: 1.1rem;
}
.dropbtn::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: white;
    transition: all 0.3s ease;
}
.dropbtn:hover::after { width: 100%; left: 0; }

.dropdown-content {
    display: none;
    position: absolute;
    background-color: white;
    min-width: 180px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    opacity: 0;
    z-index: 1100;
}
[data-theme="dark"] .dropdown-content {
    background: var(--nav-bg);
    box-shadow: 0 8px 16px rgba(0,0,0,0.4);
}
.dropdown-content a {
    color: #88AFE6;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: all 0.2s ease;
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
}
.dropdown-content a:hover { background-color: #8899e6; color: white; padding-left: 24px; z-index: 2; }
.dropdown:hover .dropdown-content { display: block; transform: translateY(0); opacity: 1; z-index: 1; }

.nav-buttons {
    padding-right: 2rem;
    flex: 1;
    display: flex;
    justify-content: flex-end;
    position: relative;
    align-items: center;
    margin-left: auto;
}
.nav-buttons .ba{
  display: none;
}
.nav-buttons button { background: none; border: none; cursor: pointer; padding: 0.5rem; font-size: 1.2rem; }

.nav-item {
    text-decoration: none;
    color: white;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    position: relative;
    font-family: 'Raleway', sans-serif;
    font-weight: 500;
    letter-spacing: 0.5px;
    font-size: 1.1rem;
}
.nav-item::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: white;
    transition: all 0.3s ease;
}
.nav-item:hover::after { width: 100%; left: 0; }

/* Hamburger (fixed selector typos) */
.menu-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    position: relative;
    z-index: 1001;
}
.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: white;
    position: absolute;
    left: 8px;
    transition: all 0.3s ease;
}
.menu-toggle span:nth-child(1) { top: 12px; }
.menu-toggle span:nth-child(2) { top: 19px; }
.menu-toggle span:nth-child(3) { top: 26px; }

.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  [data-theme="dark"] .mobile-menu{
    background-color: rgb(0, 30, 60);
  }
/* Mobile menu */
.mobile-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 60px; /* updated by JS at runtime */ 
    background-color: white;
    border-radius: 8px;
    transform: translateY(-10px);
    opacity: 0;
    transition: all 0.3s ease;
    padding: 1rem;
    margin-top: -0.4rem;
    min-width: 200px;
    z-index: 1000;
}
.mobile-menu.active { display: block; transform: translateY(0); opacity: 1; }

.mobile-menu a, .mobile-menu button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: none;
    background: none;
    cursor: pointer;
    color: #88AFE6;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
}
.mobile-menu a:hover, .mobile-menu button:hover { background-color: #5b7aa188; color: white; padding-left: 24px; }
.mobile-menu a span, .mobile-menu button span { font-size: 0.95rem; font-weight: 400; }

/* ripple effect */
button { position: relative; overflow: hidden; }
.ripple { position: absolute; border-radius: 50%; transform: scale(0); animation: ripple 600ms linear; background: rgba(255,255,255,0.6); pointer-events: none; }
@keyframes ripple { to { transform: scale(4); opacity: 0; } }

/* Responsive styles for mobile vertical navbar */
@media (max-width: 768px) {
  .nav-buttons .ba{ 
    display: block;
  }
  .menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: white;
    position: absolute;
    left: -1px;
    transition: all 0.3s ease;
}
  .nav-logo {
    padding-left: 0.5rem;
    flex: 1;
}
  .nav-links {
    display: none;
  }
  .nav-buttons {
    padding-right: 0;
  }
  .mobile-menu {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 0 !important;
    right: 0;
    height: 100vh;
    width: 250px;
    padding: 2rem 1rem 4rem 1rem;
    border-radius: 0;
    box-shadow: -2px 0 8px rgba(0,0,0,0.15);
    background-color: white;
    transform: translateX(100%);
    opacity: 1;
    transition: transform 0.3s ease;
    z-index: 1100;
  }
  .mobile-menu.active {
    transform: translateX(0);
  }
  .mobile-menu a, .mobile-menu button {
    width: 100%;
    padding: 1rem 1rem;
    font-size: 1.1rem;
    color: #333;
    background: none;
    border: none;
    justify-content: flex-start;
  }
  .mobile-menu a:hover, .mobile-menu button:hover {
    background-color: #21327a8e;
    color: white;
    padding-left: 1.5rem;
  }
  /* Bottom icon menu container */
  .mobile-menu-bottom {
    margin-top: auto;
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    border-top: 1px solid #ddd;
  }
  /* Theme and language buttons icon only */
  .mobile-menu-bottom button {
    flex: 1;
    padding: 0.5rem;
    font-size: 1.5rem;
    color: #88AFE6;
    background: none;
    border: none;
    cursor: pointer;
    justify-content: center;
  }
  .mobile-menu-bottom button span {
    display: none;
  }

  /* Add all navbar menu items to mobile menu */
  .nav-links a,
  .nav-links .dropdown {
    display: block;
    width: 100%;
    padding: 1rem 1rem;
    color: #333;
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    border-bottom: 1px solid #ddd;
    transition: background-color 0.3s ease;
  }

  .nav-links a:hover,
  .nav-links .dropdown:hover {
    background-color: #88AFE6;
    color: white;
    padding-left: 1.5rem;
  }

  /* Dropdown content inside mobile menu */
  .nav-links .dropdown-content {
    position: static;
    background-color: transparent;
    box-shadow: none;
    border-radius: 0;
    transform: none;
    opacity: 1;
    display: none;
    padding-left: 1rem;
  }

  .nav-links .dropdown:hover .dropdown-content {
    display: block;
  }

  .nav-links .dropdown-content a {
    color: #333;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border-bottom: none;
  }

  .nav-links .dropdown-content a:hover {
    background-color: #5c8fd6;
    color: white;
    padding-left: 1.5rem;
  }

  /* Dark mode styles for mobile navbar text */
  [data-theme="dark"] .mobile-menu a,
  [data-theme="dark"] .mobile-menu button {
    color: #88AFE6;
  }

  [data-theme="dark"] .nav-links a,
  [data-theme="dark"] .nav-links .dropdown {
    color: #88AFE6;
    border-bottom-color: rgba(136, 175, 230, 0.2);
  }

  [data-theme="dark"] .nav-links .dropdown-content a {
    color: #88AFE6;
  }
  [data-theme="dark"] .mobile-menu{
    background-color: rgb(0, 30, 60);
  }
  
}