/* navbar */
.navbar {
    background-color: black;
    border-bottom: 6px solid;
    border-image: linear-gradient(to right, blue, magenta);
    border-image-slice: 1;
}

body:not([data-section="home"]) .navbar {
    border-image: none;
    border-color: var(--section-theme);
}

.nav-link.nav-logo-wrapper {
    padding: 0;
}
.nav-logo {
    /*margin-right: 12px;*/
    height: calc(56px - 1rem);
}
a.navbar-home {
    text-decoration: none;
    color: white;
    display: flex;
    align-items: center;
}
.navbar-container {
    margin: 0 1em;
    max-width: unset; /* Overrides container max-width */
}
.navbar-toggler {
    border: none;
}
.navbar-nav {
    flex-grow: 1;
    justify-content: space-between;
}

.nav-mobile {
    display: flex;
    flex-grow: 1;
    justify-content: space-between;
    align-items: center;
}

ul.dropdown-menu[aria-labelledby="navbar-team"] {
    background: linear-gradient(135deg, var(--section-theme-team), color-mix(in srgb, var(--section-theme-team) 70%, black 30%));
}
ul.dropdown-menu[aria-labelledby="navbar-project"] {
    background: linear-gradient(135deg, var(--section-theme-project), color-mix(in srgb, var(--section-theme-project) 70%, black 30%));
}
ul.dropdown-menu[aria-labelledby="navbar-wet-lab"] {
    background: linear-gradient(135deg, var(--section-theme-wet-lab), color-mix(in srgb, var(--section-theme-wet-lab) 70%, black 30%));
}
ul.dropdown-menu[aria-labelledby="navbar-dry-lab"] {
    background: linear-gradient(135deg, var(--section-theme-dry-lab), color-mix(in srgb, var(--section-theme-dry-lab) 70%, black 30%));
}
ul.dropdown-menu[aria-labelledby="navbar-human-practices"] {
    background: linear-gradient(135deg, var(--section-theme-human-practices), color-mix(in srgb, var(--section-theme-human-practices) 70%, black 30%));
}
ul.dropdown-menu[aria-labelledby="navbar-education"] {
    background: linear-gradient(135deg, var(--section-theme-education), color-mix(in srgb, var(--section-theme-education) 70%, black 30%));
}
ul.dropdown-menu[aria-labelledby="navbar-awards"] {
    background: linear-gradient(135deg, var(--section-theme-awards), color-mix(in srgb, var(--section-theme-awards) 70%, black 30%));
}

/* Animated dropdowns */
.dropdown-menu {
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    transform: translateY(8px) scale(0.98);
    transform-origin: top center;
    opacity: 0;
    visibility: hidden;
    transition: transform 0.18s ease, opacity 0.18s ease, visibility 0.18s linear;
    will-change: transform, opacity;
}
.dropdown-menu.show {
    transform: translateY(0) scale(1);
    opacity: 1;
    visibility: visible;
}
.dropdown-menu::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.35);
    border-top-left-radius: 0.5rem;
    border-top-right-radius: 0.5rem;
}
.dropdown-item {
    color: #ffffff;
    border-radius: 0.375rem;
    transition: background-color 0.2s ease, transform 0.15s ease, opacity 0.18s ease;
    opacity: 0;
    transform: translateY(6px);
}
.dropdown-item:hover,
.dropdown-item:focus {
    background-color: rgba(255, 255, 255, 0.12);
    transform: translateX(2px);
}
.dropdown-menu.show .dropdown-item {
    opacity: 1;
    transform: translateY(0);
}
/* Staggered appearance for first 8 items */
.dropdown-menu.show .dropdown-item:nth-child(1) { transition-delay: 0ms; }
.dropdown-menu.show .dropdown-item:nth-child(2) { transition-delay: 30ms; }
.dropdown-menu.show .dropdown-item:nth-child(3) { transition-delay: 60ms; }
.dropdown-menu.show .dropdown-item:nth-child(4) { transition-delay: 90ms; }
.dropdown-menu.show .dropdown-item:nth-child(5) { transition-delay: 120ms; }
.dropdown-menu.show .dropdown-item:nth-child(6) { transition-delay: 150ms; }
.dropdown-menu.show .dropdown-item:nth-child(7) { transition-delay: 180ms; }
.dropdown-menu.show .dropdown-item:nth-child(8) { transition-delay: 210ms; }

/* Rotate caret on open */
.nav-item.dropdown > .nav-link.dropdown-toggle::after {
    transition: transform 0.18s ease;
}
.nav-item.dropdown.show > .nav-link.dropdown-toggle::after {
    transform: rotate(180deg);
}

@media (prefers-reduced-motion: reduce) {
    .dropdown-menu,
    .dropdown-item,
    .nav-item.dropdown > .nav-link.dropdown-toggle::after {
        transition: none !important;
    }
}

/* Desktop: open on hover with animations */
@media (min-width: 992px) { /* Bootstrap lg breakpoint */
    .navbar .dropdown:hover > .dropdown-menu {
        display: block;
        opacity: 1;
        visibility: visible;
        transform: translateY(0) scale(1);
    }
    .navbar .dropdown:hover > .nav-link.dropdown-toggle::after {
        transform: rotate(180deg);
    }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item {
        opacity: 1;
        transform: translateY(0);
    }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(1) { transition-delay: 0ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(2) { transition-delay: 30ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(3) { transition-delay: 60ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(4) { transition-delay: 90ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(5) { transition-delay: 120ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(6) { transition-delay: 150ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(7) { transition-delay: 180ms; }
    .navbar .dropdown:hover > .dropdown-menu .dropdown-item:nth-child(8) { transition-delay: 210ms; }
}

.navbar-collapse {
    flex-grow: unset;
}