/* ============================================
   RESPONSIVE STYLES
   ============================================ */

/* Tablet and below (1024px) */
@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --spacing-3xl: 4rem;
    }

    .navbar-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-base);
        overflow-y: auto;
    }

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

    .navbar-toggle {
        display: flex;
    }

    .navbar-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .navbar-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .navbar-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* Mobile (640px) */
@media (max-width: 640px) {
    :root {
        --spacing-2xl: 3rem;
        --spacing-3xl: 3rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: var(--font-size-sm);
    }

    .btn-large {
        padding: 0.875rem 1.75rem;
        font-size: var(--font-size-base);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .card-image {
        height: 180px;
    }
}

/* Extra small mobile (480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .scroll-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}