/* Sticky Header */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

/* Desktop Menu Hover Underline */
.nav-link {
    position: relative;
    font-weight: 500;
    color: #222;
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: #007bff;
    transition: width 0.3s ease, left 0.3s ease;
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
    left: 0;
}

.nav-link:hover {
    color: #007bff;
}

/* Mobile Menu */
#mobileMenu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100%;
    background-color: #fff;
    z-index: 1050; /* Πάνω από overlay */
    transition: right 0.4s ease;
    overflow-y: auto;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
}

#mobileMenu.show {
    right: 0;
}

/* Overlay */
#mobileOverlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1000; /* Κάτω από το mobileMenu */
}

#mobileOverlay.show {
    display: block;
}