/* ===== Navbar ===== */
#navbar-header {
    background: linear-gradient(135deg, rgba(51, 51, 51, 0.9) 0%, rgba(42, 42, 42, 0.9) 100%);
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

#navbar-header.scrolled {
    background: linear-gradient(135deg, rgba(35, 35, 35, 0.98) 0%, rgba(25, 25, 25, 0.98) 100%);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px);
}

.nav-link {
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
    cursor: pointer;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #87ceeb;
    transition: width 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
    transform-origin: left;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

#navbar-header {
    animation: navbarSlideDown 0.8s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

@keyframes navbarSlideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}