/* index.php — responsive UX (tablet 768–1023, mobile ≤767 / ≤575 / ≤479) */

@media (min-width: 768px) and (max-width: 1023px) {
    main .hero-flex .hero-content {
        padding: 4rem 1.5rem !important;
    }

    main .writing-expert-sp {
        margin: 3rem 1.5rem;
    }

    main .writing-expert-sp .writing-expert-wrap {
        flex-direction: column;
    }

    main .writing-expert-sp .writing-expert-wrap .writing-expert-wrap-content,
    main .writing-expert-sp .writing-expert-wrap .writing-expert-wrap-img {
        width: 100%;
        min-width: 0;
    }

    main .section-header h2 {
        font-size: clamp(1.5rem, 3vw, 2rem);
    }

    main .books-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    main .book-promo .container,
    main .book-promo-2 .container {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 1024px) {
    main .hero-flex .hero-content {
        padding: 4rem 0;
    }
}

@media (max-width: 767px) {
    main .hero-flex,
    main .container.hero-flex {
        display: flex;
        flex-direction: column;
    }

    main .hero-flex .hero-content {
        padding: 2.5rem 0 2rem !important;
        text-align: center;
    }

    main .hero-content p {
        max-width: 100%;
    }

    main .hero-flex .flex,
    main .book-idea .two-buttons,
    main .promo-buttons {
        flex-direction: column !important;
        align-items: stretch !important;
        justify-content: center !important;
        gap: 0.75rem !important;
        width: 100%;
    }

    main .hero-flex .primary-btn,
    main .hero-flex .secondary-btn,
    main .two-buttons .primary-btn,
    main .two-buttons .secondary-btn {
        width: 100%;
        justify-content: center;
        display: inline-flex;
        align-items: center;
    }

    main .hero-books {
        margin-bottom: 3rem !important;
        overflow: hidden;
    }

    main .hero-books .container,
    main .hero-books .flex {
        display: flex !important;
        flex-wrap: nowrap !important;
        align-items: flex-end !important;
        justify-content: center !important;
        gap: 0.35rem !important;
        overflow-x: hidden;
        padding-bottom: 0;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    main .hero-books .container::-webkit-scrollbar,
    main .hero-books .flex::-webkit-scrollbar {
        display: none;
    }

    main .hero-books .book-single_item {
        flex: 0 0 auto;
        width: 17%;
        max-width: 4.25rem;
        min-width: 2.75rem;
    }

    main .hero-books .book-single_item img {
        width: 100%;
        height: auto;
        display: block;
    }

    /* Center book (book3): larger and snapped to viewport center when scrolling */
    main .hero-books .book-single_item.floating {
        width: 28%;
        max-width: 6.75rem;
        min-width: 4.5rem;
        z-index: 2;
        animation: none;
    }

    main .book-idea {
        padding-bottom: 3rem !important;
        overflow: hidden;
    }

    main .book-idea .grid,
    main .book-idea .container.grid,
    main .grid.lg\:grid-cols-2,
    main .lg\:grid-cols-2 {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    main .ready-right_item:after {
        display: none;
    }

    main .ready-left_item ul {
        padding-left: 1.25rem;
    }

    main .ebook-service {
        padding: 3rem 0 !important;
    }

    main .ebook-service .lg\:grid-cols-3,
    main .grid.lg\:grid-cols-3 {
        grid-template-columns: 1fr !important;
    }

    main .ebook-service_item {
        min-height: auto;
        padding: 1.75rem 1.25rem;
    }

    main .writing-expert-sp {
        margin: 1.5rem 0;
        padding: 0 1rem;
    }

    main .writing-expert-sp .writing-expert-wrap {
        margin-top: 1.5rem;
        gap: 1.5rem;
        flex-direction: column;
    }

    main .writing-expert-sp .writing-expert-wrap-img {
        display: none;
    }

    main .bestseller-section {
        padding-top: 3rem !important;
        padding-bottom: 3rem !important;
    }

    main .platforms {
        padding-top: 3rem !important;
        padding-bottom: 2rem !important;
    }

    main .platforms .section-header img {
        max-width: 100%;
        height: auto;
    }

    main .book-promo,
    main .book-promo-2 {
        padding: 3rem 0;
    }

    main .book-promo .container,
    main .book-promo-2 .container {
        gap: 1.5rem;
        flex-direction: column;
        text-align: center;
    }

    main .promo-content ul {
        grid-template-columns: 1fr;
        text-align: left;
    }

    main .ps-books img,
    main .promo-books img {
        max-width: 100%;
        height: auto;
        margin: 0 auto;
    }

    main .tabs {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }

    main .tab {
        padding: 0.65rem 1rem;
        font-size: max(0.875rem, 14px);
    }

    main .section-header h2 {
        font-size: clamp(1.25rem, 5vw, 1.5rem);
    }

    main .books-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1rem;
    }

    main .crafting-slider {
        overflow: hidden;
    }

    main .crafting-slider .slick-slide {
        margin-right: 10px !important;
    }

    main .inspiring-client {
        padding: 3rem 0 5rem;
    }

    main .inspiring-client .gap-12 {
        gap: 1.5rem !important;
    }

    main .client-single_item {
        padding: 1.5rem 1rem;
        margin: 0 0.35rem;
    }

    main .slick-arrow {
        left: 0 !important;
        bottom: -4rem !important;
        min-width: var(--touch-min, 44px);
        min-height: var(--touch-min, 44px);
    }

    main .slick-next {
        left: 4.5rem !important;
    }

    main .slick-prev {
        left: -4.5rem !important;
    }

}

@media (max-width: 575px) {
    main .books-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.5rem;
    }

    main .hero-books .book-single_item {
        max-width: 3.75rem;
    }

    main .hero-books .book-single_item.floating {
        max-width: 6rem;
    }

    main .promo-content h2,
    main .cta-content h2 {
        font-size: 1.35rem;
    }
}

@media (max-width: 479px) {
    main .hero-flex .hero-content {
        padding: 2rem 0 1.5rem !important;
    }

    main .ebook-service_item {
        padding: 1.25rem 1rem;
    }

    main .tab {
        width: 100%;
        text-align: center;
    }

    main .tabs {
        flex-direction: column;
        align-items: stretch;
    }
}