/* Responsive Styles */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: block;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-title {
        font-size: 2rem;
    }

    .stock-grid {
        grid-template-columns: 1fr;
    }

    .filter-buttons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .btn {
        padding: 8px 20px;
    }

    .features-grid,
    .categories-grid {
        grid-template-columns: 1fr;
    }

    .steps-container {
        grid-template-columns: 1fr;
    }

    .payment-grid {
        grid-template-columns: 1fr;
    }

    .social-links {
        gap: 1rem;
    }

    .social-link {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}