/* CSS Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
    display: block;
}

ol, ul {
    list-style: none;
}

blockquote, q {
    quotes: none;
}

blockquote::before, blockquote::after,
q::before, q::after {
    content: '';
    content: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

a {
    text-decoration: none;
}

:root {
    --base-font-size: 16px;

    --max-width: 1440px;
    --standard-indentation: 10px;
    --thumb-min-width: 260px;

    --header-bg-color: #fff;
    --logo-color: #508ad0;
    --logo-accent-color: #333;
    --main-body-color: #403e3e;
    --base-bg-color: #f0f0f0;
    --main-bg-color: #bcbcbc;
    --tags-item-bg-color: #508ad0;
    --tags-color: #fff;
    --thumbs-section-bg-color: #bcbcbc;
    --video-titles-color: #333;
    --video-titles-color-hover: #508ad0;
    --footer-link-color: #aaafb1;
    --empty-banner-color: #484444;
}

html {
    font-size: var(--base-font-size);
}

.root {
    background-color: var(--base-bg-color);
    color: var(--main-body-color);
    line-height: 1;
    font-family: Arial, sans-serif;
    font-weight: 100;
    font-style: normal;
}

.header, .main, .footer {
    max-width: var(--max-width);
    margin-inline: auto;
    box-sizing: border-box;
}

.header {
    display: flex;
    background-color: var(--header-bg-color);
    box-shadow: 0 1px 5px rgba(0,0,0,0.1);
    padding: 0 var(--standard-indentation) 0 var(--standard-indentation);
}

.main {
    display: flex;
    flex-direction: column;
}

.main-tags {
    background-color: var(--header-bg-color);
}

.main-tags__list {
    padding: var(--standard-indentation);
    display: flex;
    flex-wrap: wrap;
}

.main-tags__list-item {
    margin: calc(var(--standard-indentation) * 0.1);
    padding: calc(var(--standard-indentation) * 0.2);
    background-color: var(--tags-item-bg-color);
}

.main-tags__list-link {
    color: var(--tags-color);
    font-size: clamp(0.6rem, 0.6rem + 2vw, 1rem);
}

.main-tags__list-link:hover {
    color: var(--logo-accent-color);
}

.tags-annotation-item {
    background-color: var(--header-bg-color);
}

.logo {
    margin: var(--standard-indentation) 0 var(--standard-indentation) 0;
    text-transform: uppercase;
    font-size: clamp(1.4rem, 2vw + 0.8rem, 2rem);
}

.logo a {
    color: var(--logo-color);
}

.logo__accent {
    color: var(--logo-accent-color);
}

.header-text {
    font-size: 12px;
    line-height: 16px;
    text-align: justify;
    margin-left: var(--standard-indentation);
    padding: var(--standard-indentation);
}

.thumbs-title {
    background-color: var(--base-bg-color);
    padding: var(--standard-indentation) var(--standard-indentation) 0 var(--standard-indentation);
    font-size: clamp(0.6rem, 0.6rem + 2vw, 1.5rem);
}

.thumbs__annotation-title {
    color: var(--video-titles-color);
    background-color: var(--video-title-background);
    margin: 0 var(--standard-indentation) 0 var(--standard-indentation);
    font-size: clamp(0.875rem, 2vw + 1rem, 1.5rem);
    padding: var(--standard-indentation) calc(var(--standard-indentation) * 0.5) var(--standard-indentation) calc(var(--standard-indentation) * 0.5);
}

.thumbs-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--thumb-min-width), 1fr));
    background-color: var(--base-bg-color);
}

.thumbs-item {
    margin: var(--standard-indentation);
}

.thumbs-item:hover {
    .thumbs-item__title {
        transition: 0.1s ease;
        color: var(--video-titles-color-hover);
    }

    .video-tags a {
        color: var(--video-titles-color-hover);
    }
}

.thumbs-item__image {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.thumbs-item__title {
    font-weight: 400;
    font-size: clamp(0.6rem, 0.6rem + 2vw, 1rem);
    line-height: 1.25rem;
    text-align: left;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--video-titles-color);
}

.thumbs-item__title::before {
    content: "\f04b";
    font-family: "Line Awesome Free", "Font Awesome 5 Free";
    font-weight: 900;
    display: inline-block;
}

.video-tags {
    display: flex
}

.video-tags a {
    color: var(--video-titles-color);
}

.video-tags__item {
    margin-right: calc(var(--standard-indentation) * 0.5);
    font-size: 0.8rem;
}

.video-tags__link::before {
    content: "\f02b";
    font-family: "Line Awesome Free", "Font Awesome 5 Free";
    font-weight: 900;
    margin-right: 0.3em;
    display: inline-block;
}

.player__image-wrapper {
    margin: var(--standard-indentation);
    position: relative;
}

.player__image {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.player__image-wrapper:hover .overlay {
    opacity: 1;
}

.play-icon__picture {
    width: 100px;
    height: auto;
}

.player__title {
    color: var(--video-titles-color);
    background-color: var(--video-title-background);
    margin: 0 var(--standard-indentation) 0 var(--standard-indentation);
    font-size: clamp(0.6rem, 0.6rem + 2vw, 1.5rem);
}

.video {
    background-color: var(--base-bg-color);
    margin-bottom: calc(var(--standard-indentation) * 2);
}

.video__wrapper {
    display: flex;
    flex-direction: row;
}

.player {
    flex-grow: 1;
}

.additional-list {
    display: flex;
    flex-direction: column;
}

.additional-list__item {
    margin: var(--standard-indentation);
    min-width: 300px;
    height: 250px;
    background-color: var(--empty-banner-color);
}

.additional-list-item:nth-child(1) {
    margin: var(--standard-indentation);
}

.footer {
    display: flex;
    flex-direction: row;
    justify-content: center;
    padding: calc(var(--standard-indentation) * 6) 0 calc(var(--standard-indentation) * 3) 0;
}

.footer a {
    color: var(--footer-link-color);
    text-transform: lowercase;
    font-size: clamp(0.5rem, 2vw + 1rem, 0.75rem);;
}

@media (max-width: 1180px) {
    .header-text {
        display: none;
    }

    .video__wrapper {
        flex-direction: column;
    }

    .additional-list {
        flex-direction: row;
        justify-content: space-between;
    }

    .additional-list__item {
        margin: var(--standard-indentation);
    }
}

@media (max-width: 960px) {
    .main-tags {
        order: 1;
    }

    .thubms {
        order: 0;
    }

    .additional-list {
        flex-direction: row;
        justify-content: space-around;
    }

    .additional-list__item:nth-child(3) {
        display: none;
    }
}

@media (max-width: 640px) {
    .additional-list__item:nth-child(2) {
        display: none;
    }

    .play-icon__picture {
        width: 60px;
    }
}

@media (max-width: 420px) {
    .video {
        margin-bottom: calc(var(--standard-indentation));
    }
}

/* Pagination Styles */
.pagination {
    background-color: var(--base-bg-color);
    padding: calc(var(--standard-indentation) * 2) var(--standard-indentation);
    display: flex;
    justify-content: center;
    margin-bottom: var(--standard-indentation);
}

.pagination__wrapper {
    display: flex;
    align-items: center;
    gap: calc(var(--standard-indentation) * 2);
    font-size: clamp(0.8rem, 1vw + 0.6rem, 1.1rem);
}

.pagination__link {
    display: flex;
    align-items: center;
    gap: calc(var(--standard-indentation) * 0.5);
    padding: calc(var(--standard-indentation) * 0.8) calc(var(--standard-indentation) * 1.2);
    background-color: var(--tags-item-bg-color);
    color: var(--tags-color);
    border-radius: 4px;
    transition: all 0.2s ease;
    text-decoration: none;
}

.pagination__link:hover {
    background-color: var(--logo-accent-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.pagination__current {
    padding: calc(var(--standard-indentation) * 0.8) calc(var(--standard-indentation) * 1.2);
    background-color: var(--logo-accent-color);
    color: var(--tags-color);
    border-radius: 4px;
    font-weight: 600;
}

.pagination__link i {
    font-size: 1.2em;
}

/* Load More Pagination */
.pagination--load-more {
    padding: calc(var(--standard-indentation) * 1.5) var(--standard-indentation);
    margin-bottom: calc(var(--standard-indentation) * 2);
}

.pagination__load-more-btn {
    display: flex;
    align-items: center;
    gap: calc(var(--standard-indentation) * 0.8);
    padding: calc(var(--standard-indentation) * 1.2) calc(var(--standard-indentation) * 2);
    background: linear-gradient(135deg, var(--tags-item-bg-color), var(--video-titles-color-hover));
    color: var(--tags-color);
    border-radius: 8px;
    font-size: clamp(0.9rem, 1.2vw + 0.7rem, 1.2rem);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.pagination__load-more-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.pagination__load-more-btn:hover::before {
    left: 100%;
}

.pagination__load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(80, 138, 208, 0.3);
    border-color: var(--video-titles-color-hover);
}

.pagination__load-more-btn i {
    font-size: 1.3em;
    transition: transform 0.3s ease;
}

.pagination__load-more-btn:hover i {
    transform: rotate(90deg);
}

/* Queries Section */
.queries {
    background-color: var(--header-bg-color);
    padding: calc(var(--standard-indentation) * 2) var(--standard-indentation);
    margin-bottom: calc(var(--standard-indentation) * 2);
    border-top: 3px solid var(--tags-item-bg-color);
}

.queries__list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--standard-indentation) * 0.8);
    max-width: var(--max-width);
    margin: 0 auto;
}

.queries__item {
    background-color: var(--base-bg-color);
    border-radius: 6px;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.queries__item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--tags-item-bg-color);
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: bottom;
}

.queries__item:hover::before {
    transform: scaleY(1);
}

.queries__item:hover {
    transform: translateX(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.queries__item-link {
    display: block;
    padding: calc(var(--standard-indentation) * 1.2) calc(var(--standard-indentation) * 1.5);
    color: var(--video-titles-color);
    font-size: clamp(0.8rem, 1vw + 0.6rem, 1rem);
    line-height: 1.4;
    text-decoration: none;
    transition: color 0.2s ease;
}

.queries__item-link:hover {
    color: var(--video-titles-color-hover);
}

/* Responsive Design for New Components */
@media (max-width: 960px) {
    .pagination__wrapper {
        gap: var(--standard-indentation);
    }
    
    .pagination__link,
    .pagination__current {
        padding: calc(var(--standard-indentation) * 0.6) var(--standard-indentation);
        font-size: 0.9rem;
    }
    
    .pagination__load-more-btn {
        padding: var(--standard-indentation) calc(var(--standard-indentation) * 1.5);
        font-size: 1rem;
    }
    
    .queries__list {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: calc(var(--standard-indentation) * 0.6);
    }
}

@media (max-width: 640px) {
    .pagination {
        padding: var(--standard-indentation);
    }
    
    .pagination__wrapper {
        flex-direction: column;
        gap: calc(var(--standard-indentation) * 0.8);
    }
    
    .pagination__link,
    .pagination__current {
        min-width: 120px;
        justify-content: center;
    }
    
    .pagination__load-more-btn {
        padding: calc(var(--standard-indentation) * 0.8) var(--standard-indentation);
    }
    
    .queries {
        padding: var(--standard-indentation);
    }
    
    .queries__list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 420px) {
    .pagination__link span,
    .pagination__current {
        font-size: 0.8rem;
    }
    
    .pagination__load-more-btn {
        font-size: 0.9rem;
    }
}
