.glass-nav {
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.95) 0%, rgba(0, 26, 51, 0.98) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1rem 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(3, 157, 211, 0.2);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container .logo {
    height: 40px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover {
    transform: scale(1.15);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
}

.nav-link:hover {
    background: rgba(3, 157, 211, 0.15);
    color: #039DD3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(3, 157, 211, 0.1);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.98) 0%, rgba(0, 26, 51, 0.99) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 0.75rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(3, 157, 211, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 220px;
    transform: translateY(10px);
    overflow: hidden;
    z-index: 1001;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 0.85rem 1.5rem;
    display: block;
    color: #ffffff;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: linear-gradient(90deg, rgba(3, 157, 211, 0.25) 0%, transparent 100%);
    color: #039DD3;
    padding-left: 2rem;
    border-radius: 0;
}

.settings-btn {
    background: linear-gradient(135deg, #039DD3 0%, #003366 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 12px rgba(3, 157, 211, 0.3);
}

.desktop-settings:hover {
    background: linear-gradient(135deg, #003366 0%, #039DD3 100%);
    transform: rotate(120deg) scale(1.1);
    box-shadow: 0 6px 16px rgba(3, 157, 211, 0.5);
}

.hamburger {
    display: none;
    cursor: pointer;
    padding: 0.5rem;
}

.bar {
    width: 25px;
    height: 3px;
    background: #ffffff;
    margin: 5px 0;
    border-radius: 2px;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        background: linear-gradient(180deg, #003366 0%, #001a33 100%);
        width: 100%;
        flex-direction: column;
        gap: 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        padding: 2rem 0 2rem 0;
        border-bottom: 2px solid #039DD3;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-item {
        width: 100%;
        text-align: center;
    }

    .nav-link {
        justify-content: center;
        padding: 1rem;
        font-size: 1.1rem;
    }

    .dropdown-menu {
        position: static;
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        background: rgba(0, 38, 77, 0.6);
        border: none;
        border-radius: 0;
        box-shadow: none;
        transition: max-height 0.3s ease, opacity 0.2s ease;
        padding: 0;
        margin: 0;
    }

    .nav-item:hover .dropdown-menu {
        max-height: 300px; 
        opacity: 1;
        padding: 0.5rem 0;
    }

    .dropdown-item {
        color: #ffffff;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        padding: 0.75rem 0;
        text-align: center;
        border-bottom: none;
    }

    .dropdown-item:hover {
        background: rgba(3, 157, 211, 0.2);
        color: #039DD3;
        padding-left: 0;
    }

    .nav-item:hover .dropdown-item {
        transform: translateY(0);
    }

    .desktop-settings {
        display: none !important;
    }
    
    .mobile-settings {
        display: flex !important;
        width: 80%;
        margin: 1.5rem auto 0 auto;
        padding: 0.8rem 1.5rem !important;
        font-size: 1rem;
        font-weight: 600;
        border-radius: 50px !important;
        background: linear-gradient(135deg, #039DD3 0%, #003366 100%) !important;
        color: white !important;
        box-shadow: 0 6px 15px rgba(3, 157, 211, 0.3);
        transition: all 0.3s ease;
        border: 1px solid rgba(255, 255, 255, 0.2);
        justify-content: center;
    }

    .mobile-settings i {
        margin-right: 0.6rem;
        font-size: 1.1rem;
        transition: transform 0.3s ease;
    }

    .mobile-settings:hover {
        background: linear-gradient(135deg, #003366 0%, #039DD3 100%) !important;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(3, 157, 211, 0.5);
    }

    .mobile-settings:active {
        transform: translateY(1px);
    }

    .mobile-settings:hover i {
        transform: rotate(45deg);
    }
}

@media (min-width: 769px) {
    .mobile-settings {
        display: none !important;
    }
}