/**
 * SphereNexus Editorial Pro v2.4
 * Loaded after all previous theme styles.
 * Compact scrolling footer, true sticky columns, safe mobile gutters,
 * one-row autoplay topics, and a refined editorial single post layout.
 */

:root {
    --sn-v24-ink: #071f36;
    --sn-v24-muted: #607389;
    --sn-v24-line: #dce6ec;
    --sn-v24-soft: #f6f9fb;
    --sn-v24-teal: #0f908b;
    --sn-v24-shadow: 0 15px 36px rgba(7, 31, 54, .065);
    --sn-v24-sticky-top: 110px;
}

.admin-bar { --sn-v24-sticky-top: 142px; }

/* ---------- Homepage one-row autoplay topic rail ---------- */
.sn-topic-explorer-v22 {
    margin-top: 12px !important;
    padding-top: 0 !important;
}
.sn-topic-explorer-v22__heading {
    display: flex !important;
    align-items: end !important;
    justify-content: space-between !important;
    gap: 22px !important;
    margin: 0 0 10px !important;
}
.sn-topic-explorer-v22__heading h2 {
    margin: 2px 0 0 !important;
    font-size: 20px !important;
    line-height: 1.3 !important;
}
.sn-topic-explorer-v22__heading p {
    max-width: 460px;
    margin: 0 !important;
    color: var(--sn-v24-muted);
    font-size: 11px !important;
    line-height: 1.55 !important;
}
.sn-topic-rail-v24 {
    margin-top: 0 !important;
    border-radius: 11px 20px 11px 20px !important;
}
.sn-topic-rail-v24 .sn-topic-rail-v23__track {
    animation-duration: 34s !important;
}
.sn-topic-rail-v24 .sn-topic-rail-v23__item {
    width: 190px !important;
    min-height: 68px !important;
    padding: 9px 13px !important;
}
.sn-topic-rail-v24 .sn-topic-rail-v23__icon {
    width: 34px !important;
    height: 34px !important;
    flex-basis: 34px !important;
}
.sn-topic-rail-v24 .sn-topic-rail-v23__copy strong { font-size: 10.5px !important; }
.sn-topic-rail-v24 .sn-topic-rail-v23__copy small { font-size: 8px !important; }

/* ---------- Unique homepage sticky editorial section ---------- */
.sn-editor-v24-section {
    padding: 24px 0 28px !important;
}
.sn-editor-v24-section .sn-editor-v22-layout {
    align-items: start !important;
}
.sn-editor-v24-section .sn-editor-v22-content {
    align-items: start !important;
}
.sn-editor-v24-section .sn-editor-v22-feature {
    position: sticky !important;
    top: var(--sn-v24-sticky-top) !important;
    align-self: start !important;
}
.sn-editor-v24-section .sn-editor-v22-list {
    min-width: 0;
    overflow: visible !important;
}
.sn-editor-v24-section .sn-most-read-v22-panel {
    position: sticky !important;
    top: var(--sn-v24-sticky-top) !important;
    align-self: start !important;
}

/* ---------- Category archive: left page scroll, right sidebar stays sticky ---------- */
.category-main,
.category-main > .sn-container,
.category-main .category-layout,
.category-main .content-column {
    overflow: visible !important;
}
.category-main {
    padding: 18px 0 34px !important;
}
.category-layout {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 310px !important;
    gap: 26px !important;
    align-items: start !important;
}
.category-sticky-column {
    position: sticky !important;
    top: var(--sn-v24-sticky-top) !important;
    align-self: start !important;
    min-width: 0;
    height: max-content;
}
.category-sticky-column > .site-sidebar--professional,
.category-sticky-column .site-sidebar--professional {
    position: static !important;
    top: auto !important;
    max-height: none !important;
    overflow: visible !important;
    padding-right: 0 !important;
}
.category-intro {
    margin-bottom: 14px !important;
    padding: 17px 19px !important;
}
.category-intro h1 {
    font-size: 22px !important;
}
.category-feature {
    min-height: 315px !important;
    margin-bottom: 16px !important;
}
.category-feature__media { min-height: 315px !important; }
.category-feature__content { padding: 22px 21px !important; }
.category-feature h2 { font-size: 21px !important; }
.category-section-heading {
    margin: 18px 0 11px !important;
    padding-bottom: 8px !important;
}
.category-section-heading h2 { font-size: 18px !important; }
.category-main .archive-grid--premium {
    gap: 20px 14px !important;
}
.category-main .archive-grid--premium .story-card {
    padding: 7px !important;
}

/* ---------- Sidebar compact professional polish ---------- */
.site-sidebar--professional { gap: 12px !important; }
.sidebar-card {
    padding: 17px !important;
    border: 1px solid var(--sn-v24-line) !important;
    border-radius: 12px 20px 12px 20px !important;
    background: #fff !important;
    box-shadow: 0 10px 26px rgba(7,31,54,.045) !important;
}
.sidebar-card__heading { margin-bottom: 10px !important; }
.sidebar-card__heading h2 { font-size: 17px !important; }
.sidebar-story { padding: 10px 0 !important; }
.sidebar-story h3 { font-size: 11.5px !important; }
.sidebar-category-list--premium li a { min-height: 38px !important; }
.sidebar-newsletter-card h2 { font-size: 16px !important; }

/* ---------- Reference-inspired editorial single post ---------- */
.single-main--v23 {
    padding: 18px 0 38px !important;
    background: linear-gradient(180deg, #f7fafc 0, #fff 430px) !important;
}
.sn-single-v23-shell {
    grid-template-columns: minmax(0, 1fr) 310px !important;
    gap: 26px !important;
    align-items: start !important;
    overflow: visible !important;
}
.sn-single-v23-main { overflow: visible !important; }
.sn-single-v23-sidebar {
    position: sticky !important;
    top: var(--sn-v24-sticky-top) !important;
    max-height: none !important;
    overflow: visible !important;
    align-self: start !important;
}
.sn-single-v24-header-card {
    margin-top: 10px;
    padding: 23px 25px 20px !important;
    border: 1px solid var(--sn-v24-line) !important;
    border-radius: 14px 25px 14px 25px !important;
    background: #fff !important;
    box-shadow: var(--sn-v24-shadow) !important;
}
.sn-single-v24-header-card h1 {
    margin-bottom: 11px !important;
    font-size: 26px !important;
    font-weight: 600 !important;
    line-height: 1.28 !important;
}
.sn-single-v24-header-card .sn-single-v23-deck {
    max-width: 780px;
    font-size: 14px !important;
    line-height: 1.62 !important;
}
.sn-single-v24-hero {
    margin: 16px 0 15px !important;
    border: 1px solid var(--sn-v24-line);
    border-radius: 14px 25px 14px 25px !important;
    background: #fff;
    box-shadow: var(--sn-v24-shadow) !important;
}
.sn-single-v24-hero img {
    width: 100%;
    max-height: 560px !important;
    object-fit: cover;
}
.sn-single-v24-hero figcaption {
    padding: 8px 13px 9px;
    color: #78889a;
    background: #fff;
    font-size: 9px;
    line-height: 1.45;
}
.sn-single-v24-body-card {
    padding: 20px 24px 24px;
    border: 1px solid var(--sn-v24-line);
    border-radius: 13px 22px 13px 22px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(7,31,54,.04);
}
.sn-single-v24-body-card .sn-single-v23-toc-wrap {
    margin-bottom: 19px !important;
}
.sn-single-v24-body-card .article-toc {
    background: #f6f9fb !important;
}
.sn-single-v24-body-card .sn-single-v23-content {
    font-size: 15.5px !important;
    line-height: 1.82 !important;
}
.sn-single-v24-body-card .sn-single-v23-content > p:first-of-type {
    color: #172f47;
    font-size: 16.5px !important;
    line-height: 1.78 !important;
}
.sn-single-v23-author,
.sn-single-v23-navigation { margin-top: 18px !important; }

/* ---------- Footer: scrolling categories + much tighter vertical rhythm ---------- */
.footer-topic-rail-v23 {
    padding: 9px 0 !important;
}
.footer-topic-rail-v23__frame {
    grid-template-columns: 135px minmax(0, 1fr) !important;
    gap: 10px !important;
}
.footer-topic-rail-v23__label > span {
    width: 32px !important;
    height: 32px !important;
    flex-basis: 32px !important;
}
.footer-topic-rail-v23__label strong { font-size: 11px !important; }
.footer-topic-rail-v23__group a {
    min-width: 150px !important;
    min-height: 38px !important;
    padding: 5px 10px !important;
}
.footer-topic-rail-v23__track { animation-duration: 31s !important; }
.footer-newsletter-strip {
    margin-top: 0 !important;
    padding: 10px 0 !important;
}
.footer-newsletter-strip__inner {
    min-height: 66px !important;
    gap: 16px !important;
}
.footer-newsletter-strip__icon {
    width: 42px !important;
    height: 42px !important;
}
.footer-newsletter-strip__copy { gap: 12px !important; }
.footer-newsletter-strip__copy h2 { font-size: 17px !important; }
.footer-grid--ultra {
    gap: 18px !important;
    padding-top: 20px !important;
    padding-bottom: 14px !important;
}
.footer-brand--ultra p {
    margin: 8px 0 8px !important;
    font-size: 10.5px !important;
    line-height: 1.55 !important;
}
.footer-toggle {
    min-height: 31px !important;
    margin-bottom: 4px !important;
}
.footer-toggle__label { font-size: 14px !important; }
.footer-toggle__heading-icon {
    width: 27px !important;
    height: 27px !important;
    flex-basis: 27px !important;
}
.footer-menu { gap: 1px !important; }
.footer-menu li a {
    min-height: 28px !important;
    padding: 2px 0 !important;
    font-size: 10px !important;
}
.footer-menu__icon {
    width: 23px !important;
    height: 23px !important;
    flex-basis: 23px !important;
}
.footer-menu--scrollable-categories {
    max-height: 142px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 7px;
    scrollbar-width: thin;
    scrollbar-color: #a9cfcc transparent;
}
.footer-menu--scrollable-categories::-webkit-scrollbar { width: 4px; }
.footer-menu--scrollable-categories::-webkit-scrollbar-thumb {
    border-radius: 99px;
    background: #a9cfcc;
}
.footer-contact-column p { font-size: 10px !important; }
.footer-bottom--ultra { padding: 8px 0 !important; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
    .category-layout,
    .sn-single-v23-shell {
        grid-template-columns: minmax(0, 1fr) 280px !important;
        gap: 19px !important;
    }
}

@media (max-width: 860px) {
    .category-layout,
    .sn-single-v23-shell { display: block !important; }
    .category-sticky-column,
    .sn-single-v23-sidebar {
        position: static !important;
        margin-top: 22px;
    }
    .sn-editor-v24-section .sn-editor-v22-feature,
    .sn-editor-v24-section .sn-most-read-v22-panel {
        position: static !important;
        top: auto !important;
    }
}

@media (max-width: 760px) {
    /* Real side gutters: no category card or article touches the viewport. */
    .category-main > .sn-container,
    .category-main .category-layout,
    .sn-single-v23-shell,
    .sn-single-v23-related > .sn-container {
        width: 100% !important;
        max-width: none !important;
        margin-inline: auto !important;
        padding-inline: 13px !important;
        box-sizing: border-box !important;
    }
    .category-main { padding-top: 10px !important; }
    .category-intro { padding: 14px 13px !important; }
    .category-intro h1 { font-size: 19px !important; }
    .category-feature { margin-bottom: 14px !important; }
    .category-feature__media { min-height: 195px !important; }
    .category-feature__content { padding: 15px 13px !important; }
    .category-feature h2 { font-size: 17px !important; }
    .category-section-heading { margin-top: 15px !important; }
    .category-main .archive-grid.archive-grid--premium {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 15px 10px !important;
        width: 100%;
    }
    .category-main .archive-grid--premium .story-card {
        width: 100%;
        min-width: 0;
        padding: 0 !important;
        overflow: hidden;
    }
    .category-main .archive-grid--premium .story-card__media {
        width: 100%;
        aspect-ratio: 1.08 / 1;
    }
    .category-main .archive-grid--premium .story-card__title {
        font-size: 11.5px !important;
        line-height: 1.38 !important;
    }
    .category-main .archive-grid--premium .sn-read-more-link { font-size: 8.5px !important; }

    .sn-topic-explorer-v22__heading {
        display: block !important;
        margin-bottom: 8px !important;
    }
    .sn-topic-explorer-v22__heading p { margin-top: 4px !important; }
    .sn-topic-rail-v24 .sn-topic-rail-v23__item {
        width: 158px !important;
        min-height: 61px !important;
    }

    .sn-single-v24-header-card {
        margin-top: 7px;
        padding: 17px 15px 15px !important;
    }
    .sn-single-v24-header-card h1 { font-size: 22px !important; }
    .sn-single-v24-hero { margin: 12px 0 !important; }
    .sn-single-v24-hero img { max-height: 360px !important; }
    .sn-single-v24-body-card {
        padding: 14px 13px 17px !important;
    }
    .sn-single-v24-body-card .sn-single-v23-content { font-size: 14.5px !important; }
    .sn-single-v24-body-card .sn-single-v23-content > p:first-of-type { font-size: 15px !important; }

    .footer-topic-rail-v23 { padding: 8px 0 !important; }
    .footer-topic-rail-v23__frame { width: 100% !important; padding-inline: 12px; }
    .footer-topic-rail-v23__label { margin-bottom: 6px !important; }
    .footer-newsletter-strip { padding: 9px 0 !important; }
    .footer-grid--ultra { padding: 14px 12px 10px !important; }
    .footer-menu--scrollable-categories {
        max-height: none;
        overflow: visible;
        padding-right: 0;
    }
}

@media (max-width: 400px) {
    .category-main > .sn-container,
    .category-main .category-layout,
    .sn-single-v23-shell,
    .sn-single-v23-related > .sn-container { padding-inline: 11px !important; }
    .category-main .archive-grid.archive-grid--premium { gap: 13px 8px !important; }
    .category-main .archive-grid--premium .story-card__title { font-size: 11px !important; }
}