:root {
    --color_gray: #E6E6E6;
    --background: #26252B;
    --header: #161619;
    --post: #3F3F45;
    --post_hover: #4d4d54;
    --color_blue: #7B5BF1;
    --big_headline: #997CFF;
    --shadow_blue: 0 0 10px rgba(154, 126, 255, 0.8);
    --shadow_white: 0 0 10px rgba(255, 255, 255, 0.5);
}

* {
    box-sizing: border-box;
    font-family: Work Sans, sans-serif;
}

body {
    background-color: var(--background);
    margin: 0;
    color: var(--color_gray);
}

/* header */

header {
    width: 100%;
    background-color: var(--header);
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0px 80px;
    position: relative;
}

#logo {
    width: 200px;
}

#headerNav {
    display: flex;
    align-items: center;
}

.headerMenu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 30px;
}

.headerMenu li {
    display: inline-block;
    padding: 10px;
    transition: transform 0.05s, text-shadow 0.05s;
}

.headerMenu li a {
    text-decoration: none;
    color: white;
}

.headerMenu li:hover {
    transform: scale(1.05);
    text-shadow: var(--shadow_white);
}

.blueButton {
    background-color: var(--color_blue);
    color: white;
    padding: 15px 25px;
    border: none;
    border-radius: 13px;
    transition: transform 0.05s, text-shadow 0.05s;
    z-index: 101;
}

.blueButton:hover {
    transform: scale(1.05);
    text-shadow: var(--shadow_blue);
}


/* main */

main {
    padding: 40px 210px;
}

h2 {
    text-transform: uppercase;
    font-family: Montserrat, sans-serif;
    color: var(--big_headline);
    text-shadow: var(--shadow_blue);
}

h4 {
    text-shadow: var(--shadow_white);
}

.content ul, .pageUl {
    list-style: none;
    padding: 0 0 0 15px;
    border-left: 8px solid var(--color_blue);
}

.content ul li, .pageUl li {
    background-color: var(--post);
    padding: 8px;
    margin: 8px 0;
    border-radius: 6px;
}


/* download tab */

.downloadsList li {
    padding: 0;
}

.downloadLine {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    margin: none;
    cursor: pointer;
    background-color: var(--post);
    border-radius: 6px;
}
.downloadLine:hover {
    background-color: var(--post_hover);
    text-shadow: var(--shadow_white);
}
.downloadLine span {
    transition: transform 0.2s;
}
.downloadItem.open .downloadLine span {
    transform: rotate(180deg);
}

.downloadTab {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.2s;
}
.downloadTab .tabContent {
    overflow: hidden;
    padding: 0 16px;
}
.downloadItem.open .downloadTab {
    grid-template-rows: 1fr;
}
.downloadItem.open .downloadTab .tabContent {
    padding: 12px;
    border-top: 1px solid var(--color_gray);
}

.downloadTab a {
    color: var(--big_headline);
    text-decoration: none;
}
.downloadTab a:hover {
    text-shadow: var(--shadow_blue);
}



/* articles section */

section {
    margin: 30px 0;
}

section h3 {
    margin: 0;
    padding-bottom: 10px;
    text-transform: uppercase;
    border-bottom: 3px solid var(--color_blue);
}

.articlesGrid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.articleCard {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--post);
    border: 1px solid var(--color_gray);
    border-radius: 5px;
    overflow: hidden;
    box-shadow: var(--shadow_white);
}

.articleCard img {
    width: 100%;
    display: block;
}

.articleText {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.readMore {
    display: block;
    margin-top: auto;
    width: 50%;
    text-align: center;
    text-decoration: none;
    color: white;
    outline: 3px solid var(--color_blue);
    outline-offset: -3px;
    border-radius: 12px;
    padding: 10px 12px;
    transition: transform 0.05s, box-shadow 0.05s;
}

.readMore:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow_blue);
}




/* presentation */

.presentation {
    display: flex;
    flex-direction: row;
}

.slidesContainer {
    overflow: hidden;
}

.slides {
    display: flex;
    transition: transform 0.4s;
}

.slide {
    flex: 0 0 100%;
    padding: 10px;
}
.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border: 1px solid var(--color_gray);
    box-shadow: var(--shadow_white);
}

.switchBtn {
    background-color: var(--post);
    z-index: 3;
    display: flex;
    align-items: center;
    margin: 50px 0;
    cursor: pointer;
    border-radius: 6px;
    transition: margin 0.1s;
}
.switchBtn:hover {
    background-color: var(--post_hover);
    margin: 30px 0;
}

.dots {
    text-align: center;
    padding-bottom: 15px;
}
.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin: 0 3px;
    background-color: var(--color_gray);
    border-radius: 50%;
    cursor: pointer;
}
.dot.active {
    background-color: var(--color_blue);
    box-shadow: var(--shadow_blue);
}




/* footer */

footer h2 {
    margin: 0;
}

.footerTop {
    padding: 20px 210px;
    background-color: var(--post);
}

.footerBottom {
    padding: 10px 210px;
    background-color: var(--header);
    text-align: center;
}




/* device adaptation */

#burgerMenu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 100;
    order: 1;
}

#burgerMenu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: transform 0.3s, opacity 0.3s;
}

#burgerMenu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

#burgerMenu.active span:nth-child(2) {
    opacity: 0;
}

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

@media screen and (max-width: 1024px) {
    header {
        padding: 0px 30px;
    }

    #logo {
        width: 150px;
    }

    .headerMenu li {
        margin: 0px 15px;
    }

    main {
        padding: 40px 80px;
    }

    .footerTop {
        padding: 20px 80px;
    }

    .footerBottom {
        padding: 10px 80px;
    }
}

@media screen and (max-width: 768px) {
    #burgerMenu {
        display: block;
    }

    #headerNav {
        position: fixed;
        top: -100%;
        left: 0;
        width: 100%;
        background-color: var(--header);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: top 0.4s ease;
        z-index: 1000;
        padding: 20px 0;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    #headerNav.active {
        top: 0;
    }

    header {
        padding: 10px 20px;
    }

    #logo {
        width: 130px;
    }

    .headerMenu {
        width: 100%;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        gap: 15px;
    }

    .headerMenu li {
        width: 100%;
        text-align: center;
        margin: 0px;
    }

    .headerMenu li a {
        display: block;
        padding: 12px 20px;
        font-size: 18px;
    }

    .blueButton {
        padding: 8px 16px;
        font-size: 14px;
    }

    main {
        padding: 30px 40px;
    }

    h2 {
        font-size: 24px;
    }

    h4 {
        font-size: 18px;
    }

    .articlesGrid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .footerTop {
        padding: 20px 40px;
    }

    .footerBottom {
        padding: 10px 40px;
        font-size: 14px;
    }
}

@media screen and (max-width: 576px) {
    header {
        padding: 8px 15px;
    }

    #burgerMenu span {
        width: 22px;
    }

    #headerNav {
        width: 85%;
    }

    #logo {
        width: 100px;
    }

    .headerMenu {
        padding: 0;
        margin: 0;
        text-align: center;
    }

    .headerMenu li {
        display: block;
        margin: 5px 0;
        padding: 8px;
    }

    .headerMenu li a {
        font-size: 16px;
        padding: 10px 16px;
    }

    main {
        padding: 20px 20px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }

    h4 {
        font-size: 16px;
    }

    p {
        font-size: 14px;
    }

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

    .readMore {
        width: 100%;
    }

    .footerTop {
        padding: 20px 20px;
    }

    .footerBottom {
        padding: 10px 20px;
        font-size: 12px;
    }
}




/* plugin styles */

.wp-block-accordion {
    margin: 20px 0;
}
.wp-block-accordion-item {
    background-color: var(--post);
    border: none;
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}
.wp-block-accordion-heading {
    margin: 0 !important;
    padding: 0 !important;
}
.wp-block-accordion-heading__toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 12px;
    margin: 0;
    cursor: pointer;
    background-color: var(--post);
    border: none;
    border-radius: 6px;
    font-family: 'Work Sans', sans-serif;
    font-size: 16px;
    font-weight: normal;
    color: #ffffff;
    text-align: left;
    transition: background-color 0.2s;
}
.wp-block-accordion-heading__toggle:hover {
    background-color: var(--post_hover);
    text-decoration: none;
    text-shadow: var(--shadow_white);
}
.wp-block-accordion-heading__toggle-title {
    flex: 1;
}
.wp-block-accordion-heading__toggle-icon {
    display: none;
}
.wp-block-accordion-heading__toggle::after {
    content: "▼";
    font-size: 12px;
    transition: transform 0.2s;
}
.wp-block-accordion-item.is-open .wp-block-accordion-heading__toggle::after {
    transform: rotate(180deg);
}
.wp-block-accordion-item.is-open .wp-block-accordion-panel {
    padding: 12px;
    border-top: 1px solid var(--color_gray);
}
.wp-block-accordion-panel a {
    color: var(--big_headline);
    text-decoration: none;
    display: inline-block;
    margin: 5px 0;
}
.wp-block-accordion-panel a:hover {
    text-shadow: var(--shadow_blue);
}
.wp-block-accordion-panel p {
    margin: 0 0 10px 0;
}