/* ====== General Reset ====== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: Arial, sans-serif;
        }

        /* ====== Navbar Styles ====== */
        .navbar {
            background-color: #007bff; /* Dark blue-gray (matches CRUD interface style) */
            color: white;
            padding: 0.5rem 1rem;
        }
        .nav-container {
            display: flex;
            height: 3vh; /* Καθορίζει το ύψος του menu bar, όταν έχουμε page-container ή κάτι τέτειο από αυτό αφαιρούμε 5vh για να μην έχουμε κάθετο scroll bar */
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: auto;
        }

        /* ====== Logo ====== */
        .nav-logo a {
            color: white;
            font-size: 1.4rem;
            text-decoration: none;
            font-weight: bold;
        }

        /* ====== Menu Items ====== */
        .nav-menu {
            display: flex;
            list-style: none;
        }
        .nav-menu li {
            position: relative;
        }
        .nav-menu li a {
            display: block;
            padding: 0.7rem 1rem;
            color: white;
            text-decoration: none;
            transition: background 0.3s;
        }
        .nav-menu li a:hover {
            background-color: #34495E;
        }

        /* ====== Dropdown ====== */
        .dropdown-menu {
            display: none;
            position: absolute;
            background-color: #2C3E50;
            list-style: none;
            min-width: 200px;
            top: 100%;
            left: 0;
            z-index: 999;
        }
        .dropdown-menu li a {
            padding: 0.6rem 1rem;
        }
        /* Show dropdown on hover (desktop) */
        .dropdown:hover > .dropdown-menu {
            display: block;
        }

        /* ====== Second-level dropdown ====== */
        .dropdown-submenu {
            position: relative;
        }
        .dropdown-submenu .dropdown-menu {
            top: 0;
            left: 100%;
        }
        .dropdown-submenu:hover > .dropdown-menu {
            display: block;
        }

        /* ====== Hamburger Menu (Mobile) ====== */
        .nav-toggle {
            display: none;
            cursor: pointer;
        }
        .bar {
            display: block;
            width: 25px;
            height: 3px;
            margin: 5px auto;
            background-color: white;
            transition: 0.3s;
        }

        /* ====== Responsive ====== */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 60px;
                right: 0;
                flex-direction: column;
                background-color: #2C3E50;
                width: 250px;
                display: none;
            }
            .nav-menu li {
                width: 100%;
            }
            /* Disable hover dropdowns on mobile */
            .dropdown:hover > .dropdown-menu,
            .dropdown-submenu:hover > .dropdown-menu {
                display: none;
            }
            .nav-menu.active {
                display: flex;
            }
            .dropdown-menu {
                position: static;
            }
            .dropdown-submenu .dropdown-menu {
                position: static;
            }
        }