/* ═══════════════════════════════════════════════
   blog-index.css  —  /blog/ page
   Self-contained: includes all shared header/nav
   styles so no other stylesheet is required.
   ═══════════════════════════════════════════════ */

/* ── Fonts ────────────────────────────────────── */

@font-face {
    font-family: "EB Garamond";
    src: url("../fonts/EBGaramond-VariableFont_wght.woff2") format("woff2");
    font-weight: 400 800;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "EB Garamond";
    src: url("../fonts/EBGaramond-Italic-VariableFont_wght.woff2") format("woff2");
    font-weight: 400 800;
    font-style: italic;
    font-display: swap;
}

@font-face {
    font-family: "Faustina";
    src: url("../fonts/Faustina-VariableFont_wght.woff2") format("woff2");
    font-weight: 400 800;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Poppins-SemiBold";
    src: url("../fonts/Poppins-SemiBold.woff2") format("woff2");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Poppins";
    src: url("../fonts/Poppins-Regular.woff2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

/* Cross-document view transitions */

@view-transition {
    navigation: auto;
}

/* Freeze the nav bar perfectly still during page transitions */

::view-transition-group(site-header),
::view-transition-old(site-header),
::view-transition-new(site-header) {
    animation-duration: 0s;
}

/* Snap the rest of the page in quickly — reduces perceived flash */

::view-transition-old(root),
::view-transition-new(root) {
    animation-duration: 80ms;
    animation-timing-function: ease-in-out;
}

/* ── Reset / Base ─────────────────────────────── */

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Faustina', 'Crimson Text', serif;
    background-color: #ffffff;
    color: #011f5b;
}

a {
    text-decoration: none;
}

/* ── Logos row ────────────────────────────────── */

.logos {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0 0;
    width: 100%;
    flex-wrap: wrap;
}

.DDDI-logo {
    height: auto;
    width: min(210px, 35vw);
    max-height: 55px;
}

.divider {
    width: 0.1rem;
    height: 3rem;
    background-color: #011f5b;
    margin: 0 1.25rem;
}

.datapoints-logo {
    height: auto;
    width: min(200px, 30vw);
}

/* ── Sticky header wrapper ────────────────────── */

.site-header-wrap {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: #ffffff;
    view-transition-name: site-header;
}

.header {
    background-color: #ffffff;
}

.main-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    gap: 75px;
    margin-top: 18px;
}

.nav-link {
    font-family: "Poppins-SemiBold", "Poppins", Arial, sans-serif !important;
    font-weight: 600 !important;
    color: #011f5b;
    text-decoration: none;
    padding-top: 0.5rem;
    margin: 0 1.25rem;
    font-size: clamp(1rem, 2vw, 1.25rem);
    transition: color 0.3s;
}

.nav-link:hover {
    color: #fc4375;
}

.nav-link--active {
    color: #fc4375;
}

.divider-line {
    width: 100%;
    height: 0.1rem;
    background-color: #011f5b;
    margin-top: 0.625rem;
}

/* ═══════════════════════════════════════════════
   Blog layout: sidebar + posts list
   ═══════════════════════════════════════════════ */

.blog-layout {
    display: flex;
    gap: 3rem;
    max-width: 1100px;
    margin: 2rem auto 0;
    padding: 0 2rem 4rem;
}

/* ── Sidebar ──────────────────────────────────── */

.blog-sidebar {
    flex: 0 0 160px;
    position: sticky;
    top: 5.5rem;
    height: -moz-fit-content;
    height: fit-content;
}

.blog-sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.sidebar-cat-btn {
    font-family: "Poppins", Arial, sans-serif;
    font-size: 0.95rem;
    color: #4a5568;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    padding: 0.45rem 0.75rem;
    border-radius: 4px;
    transition: color 0.2s, background-color 0.2s;
    line-height: 1.4;
    white-space: nowrap;
}

.sidebar-cat-btn:hover {
    color: #011f5b;
    background-color: rgba(1, 31, 91, 0.06);
}

.sidebar-cat-btn.active {
    color: #fc4375;
    font-family: "Poppins-SemiBold", "Poppins", Arial, sans-serif;
    font-weight: 600;
}

/* ── Posts list ───────────────────────────────── */

.blog-posts-list {
    flex: 1;
    min-width: 0;
}

/* ── Article card (matches home page style) ────── */

.blog-content-section {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin: 0 0 24px 0;
    padding: 0;
}

.blog-content-section + .blog-content-section {
    border-top: 1px solid rgba(1, 31, 91, 0.15);
    padding-top: 20px;
}

/* ── Card image ───────────────────────────────── */

.blog-image {
    flex: 0 0 auto;
    width: 220px;
    aspect-ratio: 1.618 / 1;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
       object-fit: cover;
    border-radius: 4px;
    transition: opacity 0.2s;
}

.blog-image img:hover {
    opacity: 0.88;
}

/* ── Card content ─────────────────────────────── */

.blog-content {
    flex: 1;
    padding: 2px 0;
}

/* ── Tag ──────────────────────────────────────── */

.blog-tag-row {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    width: -moz-max-content;
    width: max-content;
    gap: 2px;
    margin: 0 0 6px 0;
}

.blog-tag {
    color: #666;
    font-family: "Poppins", Arial, sans-serif;
    font-size: 0.7rem;
    font-weight: 400;
    white-space: nowrap;
}

.blog-tag-line {
    display: block;
    width: 100%;
    height: 1px;
    background-color: #66BAB7;
}

/* ── Title ────────────────────────────────────── */

.blog-title {
    margin: 0 0 8px 0;
    font-family: "Poppins-SemiBold", Arial, sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
}

.blog-title-link {
    color: #011f5b;
    text-decoration: none;
    font-size: 1.125rem;
    transition: color 0.2s;
}

.blog-title-link:hover {
    color: #fc4375;
}

/* ── Meta ─────────────────────────────────────── */

.blog-meta {
    color: #666;
    font-size: 0.9125rem;
    margin: 0 0 6px 0;
    font-family: 'Faustina', serif;
}

.blog-meta a {
    color: #666;
    text-decoration: none;
    transition: color 0.2s;
}

.blog-meta a:hover {
    color: #fc4375;
}

/* ── Description ──────────────────────────────── */

.blog-description {
    color: #333;
    line-height: 1.45;
    margin: 0;
    font-family: 'Faustina', serif;
    font-size: 1rem;
}

/* ═══════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════ */

/* ── ≤900px: collapse sidebar above posts ──────── */

@media (max-width: 900px) {
    .blog-layout {
        flex-direction: column;
        gap: 1.5rem;
        padding: 0 1.25rem 3rem;
    }

    .blog-sidebar {
        flex: none;
        position: static;
        width: 100%;
    }

    .blog-sidebar-nav {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.35rem;
    }

    .sidebar-cat-btn {
        border: 1px solid rgba(1, 31, 91, 0.18);
        border-radius: 20px;
        padding: 0.3rem 0.9rem;
        font-size: 0.875rem;
    }

    .sidebar-cat-btn.active {
        background-color: rgba(252, 67, 117, 0.08);
        border-color: #fc4375;
    }

    .blog-image {
        width: 160px;
    }
}

/* ── ≤600px: stack image above content ──────────── */

@media (max-width: 600px) {
    .blog-layout {
        padding: 0 0.75rem 3rem;
    }

    .blog-content-section {
        flex-direction: column;
        gap: 12px;
    }

    .blog-image {
        width: 100%;
        aspect-ratio: 2.5 / 1;
    }

    .main-nav {
        gap: clamp(0.75rem, 4vw, 1.5rem);
    }
}

/* ── ≤480px: hero, nav scaling ─────────────────── */

@media (max-width: 480px) {
    .logos {
        padding: 1rem 0.75rem 0;
    }

    .blog-hero {
        padding: 1.75rem 1rem 1.5rem;
    }

    .main-nav {
        gap: 0.6rem;
        margin-top: 12px;
    }

    .nav-link {
        font-size: 0.78rem;
        padding-top: 0.35rem;
    }
}