/* Header & Navigation */
.header {
    background-color: var(--bg-header);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.nav-item {
    transition: all 0.3s ease;
}
.nav-item-active {
    color: var(--accent-light);
    transform: scale(1.05);
}
.nav-item:hover {
    color: var(--accent-lighter);
    transform: scale(1.1);
}

/* Dropdown Menu */
.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--bg-dropdown);
    min-width: 260px;
    max-height: 70vh;
    overflow-y: auto;
    box-shadow: 0px 8px 16px 0px var(--shadow-color);
    z-index: 20;
    border-radius: 0.5rem;
    border: 1px solid var(--border-dropdown);
}
.dropdown:hover .dropdown-content,
.dropdown.dropdown-open .dropdown-content {
    display: block;
}
.dropdown-content a {
    color: var(--text-secondary);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: background-color 0.3s ease, color 0.3s ease;
}
.dropdown-content a:hover {
    background-color: var(--bg-card-solid);
    color: var(--text-heading);
}

/* Mobile Menu */
#mobile-menu-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    pointer-events: none;
    transition: background-color 0.3s ease-in-out;
}
#mobile-menu-container.menu-open {
    pointer-events: auto;
    background-color: rgba(0, 0, 0, 0.5);
}
#mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: var(--bg-mobile-menu);
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    overflow-y: auto;
    padding: 6rem 2rem 2rem 2rem;
    transition: transform 0.3s ease-in-out;
    transform: translateX(100%);
}
#mobile-menu.menu-open {
    transform: translateX(0);
}
#mobile-menu-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--text-heading);
    cursor: pointer;
    transition: transform 0.3s;
    background: none;
    border: none;
    padding: 4px 8px;
    line-height: 1;
}
#mobile-menu-close:hover {
    transform: rotate(90deg) scale(1.1);
}