header {
    align-items: center;
    display: flex;
    flex-direction: column;
    margin: 1rem 2rem;
}

.tocToggleBtn,
.tocCloseBtn {
    display: none !important;
}

.appLayout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    flex: 0 0 380px;
    width: 380px;
    height: 100vh;
    position: sticky;
    top: 0;
    overflow-y: auto;
    background: var(--main-white-color);
    border-right: 1px solid var(--main-grey-color);
    z-index: 100;
}

.tableOfContentContainer {
    padding: 1rem;
}

.navList {
    list-style: none;
}

.mainContent {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.imagesBlock {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

header > .logo {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

header > .logo > .image {
    display: inline-block;
    width: 200px;
    height: 100px;
    background-color: var(--main-red-color);
    -webkit-mask: url('../art/logo.svg') no-repeat center / contain;
    mask: url('../art/logo.svg') no-repeat center / contain;
}

header .address {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 1em 0 0;
}

.termsTable {
    width: 100%;
    border-collapse: collapse;
    border: none;
}

.termsTable td,
.termsTable th {
    border-top: none;
    border-left: none;
    border-right: none;
    border-bottom: 1px solid var(--main-text-color);
}

.termsTable td:first-child,
.termsTable th:first-child {
    border-right: 1px solid var(--main-text-color);
}

.readingContentContainer {
  display: flex;
  flex-direction: column;
  align-items: center;
}

main {
    font-size: 1rem;
    margin: 1rem 2rem;
}

main section.readingContentItem {
    width: 100%;
}

div.mainContent > main > section.readingContentItem:last-of-type {
    margin-bottom: 4rem;
}

footer {
    margin: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 1px;
}

footer.sticky {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    position: fixed;
    bottom: 0;
    border-top: 1px solid var(--main-grey-color);
    background-color: var(--main-bg-color);
    width: calc(100% - 380px);
}

footer.sticky  > div.footerContentContainer {
    width: 100%;
    max-width: 980px;
    min-height: 60px;
    padding: 0 1rem;
}

footer > div {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.menuButton {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--main-red-color);
    background-color: var(--main-bg-color);
    color: var(--main-text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    padding: 0;
}

.menuItems {
    display: flex;
    gap: 0.5rem;
}

.menuButton:hover {
    border-color: var(--main-red-color--hover);
    box-shadow: 0 0 3px 1px var(--main-red-color--hover);
}

.menuButton:active {
    transform: scale(0.96);
}

@media only screen and (max-width: 965px) {
    .appLayout {
        flex-direction: column;
        padding-bottom: 0;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 85%;
        max-width: 380px;
        height: 100vh;
        transition: left 0.3s ease;
        overflow-y: auto;
        box-shadow: 2px 0 12px rgba(0,0,0,0.15);
    }

    .sidebar.isOpen {
        left: 0;
    }

    .tocToggleBtn, .tocCloseBtn {
        display: block !important;
    }

    .appLayout.tocOpen::before {
        opacity: 1;
        visibility: visible;
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
    }

    body.tocOpen {
        overflow: hidden;
    }

    header {
        margin: 1rem;
    }

    footer.sticky {
        width: 100%;
    }

    footer > div {
        justify-content: space-around;
    }

    main {
        font-size: 1rem;
        margin: 1rem;
    }

    main .readingContentItem {
        padding: 0;
    }

}

@media only screen and (min-width: 769px) {
    main .readingContentItem {
        max-width: 980px;
        margin: 0 2rem;
    }
}

@media only screen and (max-width: 500px) {
    header .address {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 0;
    }

    header .address div {
        padding: 1em 0 0;
    }

    .sidebar {
        width: 85%;
        max-width: 320px;
    }
}

.scrollToTop[hidden],
.tocToggleBtn[hidden],
.tocCloseBtn[hidden] {
    display: none !important;
}