@media (max-width: 1024px) {
    .logo-img {
        width: 40px;
        height: 40px;
    }
    nav.main-nav a {
        font-size: 22px;
    }
    .mobile-menu-btn {
        display: flex; 
        place-items: center;
    }
    nav.main-nav {
        display: none;
    }
    nav.mobile-nav {
        display: flex;
    }
    .sq-card {
        flex: 1 1 calc(50% - 15px);
    }
    .hero-new {
        flex-direction: column;
    }
}

@media (min-width: 1024px) {
    .hero h1 {
        font-size: 3.75rem;
    }
    .featured h2 {
        font-size: 3rem;
    }
    .books-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
/* TABLET — 768px */
@media (max-width: 768px) {

    /* Header */
    header {
        padding: 15px 30px;
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    nav ul {
        gap: 20px;
    }

    /* Hero / Featured Section */
    .featured-content {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }

    .featured-content img {
        width: 80%;
        margin: 0 auto;
    }

    .featured-content .text {
        width: 100%;
    }

    /* Book Grid */
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .book-card {
        padding: 18px;
    }

    /* Subscribe Box */
    .subscribe-box {
        width: 90%;
        padding: 25px;
    }

    /* Footer */
    footer {
        padding: 30px;
        text-align: center;
    }

    footer .footer-links {
        flex-direction: column;
        gap: 10px;
    }
    .footer-container{
        padding: 0;
    }
    .section-two{
        margin-left: 50px;
    }

    .section-three{
        margin-left: 80px;
    }

    .footer-icon{
        width: 30px;
        height: 30px;
        margin-right: 40px;
    }

    .footer-icon-insta{
        width: 40px;
        height: 40px;
        margin-right: 50px;
    }

    .footer-icon-wide{
        width: 36px;
        height: 28px;
        margin-right: 50px;
    }

}



@media (max-width: 640px) {
    .logo-img {
         width: 60px;
        height: 60px;
    }
    .login-img, .register-img {
        width: 32px;
        height: 32px;
    }

    .login-text, .register-text {
        display: none;
    }
    .hero {
        padding: 6rem 1rem;
    }
    .hero h1 {
        font-size: 3rem;
    }
    .sq-card {
        flex: 1 1 100%;
    }
    .subscribe-box {
        padding: 2rem 1rem;
    }
    .sec-title {
        font-size: 22px;
    }
    .sec-link {
        font-size: 16px; 
    }
}

@media (min-width: 640px) {
    .featured h2 {
        font-size: 2.25rem;
    }
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .placeholder-content h1 {
        font-size: 3rem;
    }
}

/* MOBILE — 425px */
@media (max-width: 426px) {

    /* Header */
    header {
        width: 100%;
        padding: 12px 20px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    /* Hero / Featured Section */
    .featured-content {
        padding: 20px;
    }

    .featured-content img {
        width: 100%;
    }

    .featured-content h2 {
        font-size: 1.4rem;
    }

    .featured-content p {
        font-size: 0.95rem;
    }

    .books-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .book-card {
        padding: 15px;
    }

    .subscribe-box {
        max-width: 400px;
        padding: 18px;
    }

    .subscribe-box h3 {
        font-size: 20px;
    }

    .subscribe-box input, .subscribe-box button, .subscribe-box textarea {
        width: 360px;
        margin-bottom: 10px;
    }

    .subscribe-box  {
        width: 100%;
    }

    footer {
        padding: 0px;
        font-size: 0.9rem;
        background-color: #2e2e2e;  
    }

    .footer-container.desktop{
        display: none;
    }

    .section-one, .section-two, .section-three{
        margin-left: 0px;
        margin-top: 30px;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .section-three{
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        margin-top: 20px;
    }

    .icons{
        justify-content: center;
        margin-left: 32px;
    }

    .footer-container.mobile {
    display: flex;
    height: auto;
    width: auto;
    flex-direction: column;
    width: 100%;
    padding: 20px;
    background: #2e2e2e;
    color: white;
    gap: 20px;
    align-items: center;
    }

    .footer-dropdown {
        width: 90%;
        background: #3a3a3a;
        border-radius: 10px;
        padding: 10px 15px;
        color: white;
    }

    .footer-dropdown summary {
        font-size: 18px;
        font-weight: 600;
        cursor: pointer;
        padding: 8px 0;
    }

    .footer-dropdown summary::after {
        content: "▼";
        float: right;
        transition: 0.3s;
    }

    .footer-dropdown[open] summary::after {
        transform: rotate(-180deg);
    }

    .dropdown-content {
        margin-top: 10px;
        padding-left: 10px;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .dropdown-content a {
        color: #d7d7d7;
        text-decoration: none;
        font-size: 16px;
    }

    .dropdown-content p {
        margin: 0;
        color: #d7d7d7;
        font-size: 16px;
    }
    
}