main { 
    flex: 1;
    padding: 2rem; 
    max-width: 900px; 
    width: 100%;
    margin: 2rem auto; 
}


.navbar { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    background: rgba(30, 41, 59, 0.7); 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    color: white; 
    padding: 1.2rem 2rem; 
    position: sticky; 
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.logo { 
    font-size: 1.5rem; 
    font-weight: 800; 
    background: linear-gradient(to right, var(--secondary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.nav-links { 
    list-style: none; 
    display: flex; 
    gap: 2rem; 
}

.nav-links a { 
    color: var(--text-muted); 
    text-decoration: none; 
    font-weight: 500; 
    transition: all 0.3s ease; 
    position: relative;
}

.nav-links a:hover { 
    color: var(--text-main); 
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}


.hamburger { 
    display: none; 
    flex-direction: column; 
    gap: 6px; 
    cursor: pointer; 
    z-index: 101;
}

.hamburger span { 
    width: 30px; 
    height: 3px; 
    background: var(--text-main); 
    border-radius: 3px; 
    transition: all 0.3s ease;
}


.main-footer {
    background-color: #0b1120; 
    color: var(--text-muted);
    padding: 4rem 2rem 2rem;
    margin-top: auto;
    border-top: 2px solid var(--border);
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-section h4 {
    color: var(--text-main);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    letter-spacing: 1px;
    display: inline-block;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 0.5rem;
}

.footer-section p, .footer-section ul li {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li:hover {
    color: var(--text-main);
}

.footer-bottom {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    main { 
        padding: 1rem; 
        margin: 0 auto; 
    }

    .nav-links { 
        display: flex; 
        flex-direction: column; 
        position: absolute; 
        top: 100%; 
        left: 0; 
        width: 100%; 
        background: rgba(15, 23, 42, 0.95); 
        backdrop-filter: blur(10px);
        padding: 0; 
        text-align: center; 
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-links.active { 
        max-height: 300px; 
        padding: 1rem 0;
    }

    .nav-links li {
        padding: 1rem 0;
    }

    .hamburger { display: flex; }

    .footer-content {
        text-align: center;
        gap: 2rem;
    }
    
    .footer-section h4 {
        margin: 0 auto 1.5rem auto;
    }
}