/* Keep diary copy inside the red notebook margin on every viewport. */
.diary-book-wrapper.diary-fullscreen-active .book-page.page-front {
    padding-right: 3.5rem !important;
}

.diary-book-wrapper.diary-fullscreen-active .book-page.page-back {
    padding-left: 3.5rem !important;
}

@media (min-width: 769px) {
    .diary-book-wrapper.diary-fullscreen-active .diary-notebook-3d {
        height: 850px !important;
    }
}

/* Mobile diary: one readable page instead of the desktop 3D spread. */
@media (max-width: 768px) {
    .diary-book-wrapper.diary-fullscreen-active {
        width: 100% !important;
        max-width: 430px !important;
        margin: 3.5rem auto 0 !important;
        padding: 0 12px !important;
        overflow: visible !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-notebook-3d {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        max-width: none !important;
        height: auto !important;
        min-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        overflow: visible !important;
        background: transparent !important;
        border: 0 !important;
        border-radius: 20px !important;
        box-shadow: none !important;
        perspective: none !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .paper-stack-left,
    .diary-book-wrapper.diary-fullscreen-active .paper-stack-right,
    .diary-book-wrapper.diary-fullscreen-active .notebook-rings-3d,
    .diary-book-wrapper.diary-fullscreen-active .diary-sidebar-note,
    .diary-book-wrapper.diary-fullscreen-active .diary-desktop-tabs {
        display: none !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .book-cover-left .diary-sidebar-title,
    .raccoon-diary-section .page-decor-raccoon {
        display: none !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .book-cover-left {
        display: block !important;
        width: 100% !important;
        height: auto !important;
        margin: 0 0 10px !important;
        padding: 0 !important;
        background: transparent !important;
        border: 0 !important;
        box-shadow: none !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-page-content {
        width: 100% !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-mobile-tabs {
        position: static !important;
        display: grid !important;
        grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
        width: 100% !important;
        margin: 0 !important;
        padding: 5px !important;
        gap: 5px !important;
        overflow: visible !important;
        border: 1px solid rgba(124, 58, 237, 0.14) !important;
        border-radius: 16px !important;
        background: rgba(255, 255, 255, 0.92) !important;
        box-shadow: 0 8px 24px rgba(76, 29, 149, 0.1) !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-tab {
        display: flex !important;
        min-width: 0 !important;
        width: 100% !important;
        min-height: 54px !important;
        margin: 0 !important;
        padding: 7px 3px !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 2px !important;
        border: 1px solid #e5dccb !important;
        border-radius: 11px !important;
        background: #f5f0e7 !important;
        box-shadow: none !important;
        transform: none !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-tab.active {
        color: #ffffff !important;
        border-color: #7c3aed !important;
        background: linear-gradient(135deg, #7c3aed, #9333ea) !important;
        box-shadow: 0 5px 14px rgba(124, 58, 237, 0.25) !important;
        transform: translateY(-1px) !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-tab .tab-time,
    .diary-book-wrapper.diary-fullscreen-active .diary-tab .tab-label {
        width: 100% !important;
        color: inherit !important;
        font-size: 0.68rem !important;
        line-height: 1.15 !important;
        text-align: center !important;
        white-space: normal !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-tab .tab-label {
        font-size: 0.7rem !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-pages-viewport {
        position: relative !important;
        display: block !important;
        width: 100% !important;
        height: 560px !important;
        height: clamp(490px, 68svh, 620px) !important;
        overflow: hidden !important;
        border: 1px solid #eadfca !important;
        border-radius: 18px !important;
        background: #fffdf9 !important;
        box-shadow: 0 18px 42px rgba(92, 58, 33, 0.18), 0 3px 0 #e8dcc5 !important;
        isolation: isolate !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .book-paper {
        position: static !important;
        display: block !important;
        width: 100% !important;
        height: 100% !important;
        margin: 0 !important;
        transform: none !important;
        transform-style: flat !important;
        animation: none !important;
        box-shadow: none !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .book-page {
        position: absolute !important;
        inset: 0 !important;
        display: none !important;
        width: 100% !important;
        height: 100% !important;
        padding: 22px 20px 72px !important;
        overflow-x: hidden !important;
        overflow-y: auto !important;
        transform: none !important;
        backface-visibility: visible !important;
        border-radius: 18px !important;
        box-shadow: none !important;
        -webkit-overflow-scrolling: touch !important;
        overscroll-behavior-x: none !important;
        overscroll-behavior-y: auto !important;
        touch-action: pan-y !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .book-page.active-page {
        display: flex !important;
        z-index: 3 !important;
        animation: diaryMobilePageIn 0.28s ease both !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .entry-title {
        margin-bottom: 0.65rem !important;
        font-size: clamp(1.2rem, 5.4vw, 1.45rem) !important;
        line-height: 1.28 !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .entry-text {
        margin-bottom: 1rem !important;
        color: #475569 !important;
        font-size: 0.9rem !important;
        line-height: 1.58 !important;
        overflow-wrap: anywhere !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .entry-media {
        margin-top: 0.5rem !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .polaroid-image-placeholder {
        width: 138px !important;
        height: 102px !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-page-btn {
        top: auto !important;
        bottom: 14px !important;
        width: 42px !important;
        height: 42px !important;
        transform: none !important;
        background: #ffffff !important;
        border: 1px solid rgba(124, 58, 237, 0.24) !important;
        box-shadow: 0 7px 18px rgba(76, 29, 149, 0.18) !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-page-btn.prev-btn {
        left: 74px !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-page-btn.next-btn {
        right: 74px !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .btn-close-fullscreen {
        top: -48px !important;
        right: 12px !important;
        width: 44px !important;
        height: 44px !important;
        font-size: 25px !important;
    }
}

@media (max-width: 360px) {
    .diary-book-wrapper.diary-fullscreen-active {
        padding-inline: 8px !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-tab {
        min-height: 50px !important;
        padding-inline: 2px !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .diary-tab .tab-time,
    .diary-book-wrapper.diary-fullscreen-active .diary-tab .tab-label {
        font-size: 0.62rem !important;
    }

    .diary-book-wrapper.diary-fullscreen-active .book-page {
        padding-inline: 16px !important;
    }
}

@keyframes diaryMobilePageIn {
    from {
        opacity: 0;
        transform: translateX(10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}