* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(30, 41, 59, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.navbar {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-container {
    position: relative;
    margin-bottom: 20px;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo {
    height: 100px;
    width: auto;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4));
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 50px;
    position: relative;
    margin-bottom: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: #ffffff !important;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600 !important;
    letter-spacing: 1px;
    padding: 8px 20px 0px;
    display: block;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link:hover::after {
    width: 80%;
}

.nav-link.active {
    color: #667eea !important;
}

.nav-link.active::after {
    width: 80%;
}

/* Biztosítja, hogy az aktív link mindig látható marad */
.nav-item .nav-link.active,
.nav-menu .nav-link.active {
    color: #667eea !important;
}

main {
    margin-top: 180px;
    padding: 40px 20px;
}

.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
}

.container {
    max-width: 1200px;
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 60px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    color: white;
    text-align: center;
}

.container h1 {
    font-size: 3rem;
    margin-bottom: 30px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 2px;
}

.container p {
    font-size: 1.2rem;
    line-height: 1.8;
    opacity: 0.9;
}

/* Responsive design */
@media (max-width: 768px) {
    .navbar {
        padding: 15px 20px;
        flex-direction: column;
    }

    .logo-container {
        margin-bottom: 15px;
    }

    .logo {
        height: 60px;
    }

    .nav-menu {
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
        margin-top: 10px;
    }

    .nav-link {
        font-size: 13px;
        padding: 6px 12px;
    }

    .container {
        padding: 30px 20px;
    }

    .container h1 {
        font-size: 1.8rem;
    }

    .container p {
        font-size: 1rem;
        line-height: 1.6;
    }

    main {
        margin-top: 160px;
        padding: 20px 10px;
    }

    .section {
        min-height: 0;
        padding: 40px 10px;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 10px 15px;
    }

    .logo {
        height: 50px;
    }

    .nav-menu {
        gap: 8px;
        margin-top: 10px;
    }

    .nav-link {
        font-size: 11px;
        padding: 5px 8px;
    }

    .container {
        padding: 20px 15px;
        border-radius: 15px;
    }

    .container h1 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .container p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    main {
        margin-top: 150px;
        padding: 20px 5px;
    }
    
    .section {
        padding: 30px 5px;
    }
}