/* =========================================================
   SIGMA BLOG STYLES
   Used by blogs.html and every article in /blogs/<slug>/.
   Load it after styles.css: it reuses the site's colour,
   radius, shadow and easing tokens from :root.
========================================================= */

[hidden] {
    display: none !important;
}


/* =========================================================
   HERO (listing + article)
========================================================= */

.blog-hero {
    position: relative;
    display: flex;
    align-items: flex-end;
    min-height: 560px;
    padding: 160px 0 72px;
    overflow: hidden;
    background: var(--blue-deep);
    color: var(--white);
}

.blog-hero-image {
    position: absolute;
    inset: 0;
}

.blog-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(5, 38, 67, .95) 0%, rgba(5, 38, 67, .82) 45%, rgba(5, 38, 67, .35) 100%);
}

.blog-hero .container {
    position: relative;
    z-index: 1;
}

.blog-hero-copy {
    max-width: 900px;
}

.blog-hero h1 {
    margin: 16px 0 20px;
    color: var(--white);
}

.blog-hero-article h1 {
    font-size: clamp(36px, 4.4vw, 58px);
}

.blog-hero p {
    max-width: 660px;
    margin: 0;
    color: rgba(255, 255, 255, .8);
    font-size: 17px;
}

.blog-hero .blog-meta {
    color: rgba(255, 255, 255, .75);
}

.blog-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 22px;
    padding: 0;
    list-style: none;
    color: rgba(255, 255, 255, .6);
    font-size: 13px;
    font-weight: 600;
}

.blog-breadcrumb li + li::before {
    content: "/";
    margin-right: 8px;
    opacity: .6;
}

.blog-breadcrumb a {
    color: rgba(255, 255, 255, .9);
    text-decoration: none;
    transition: color .3s var(--ease);
}

.blog-breadcrumb a:hover {
    color: var(--yellow);
}

.blog-breadcrumb [aria-current] {
    display: inline-block;
    max-width: 38ch;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: bottom;
}


/* =========================================================
   META LINE  (category · date · reading time)
========================================================= */

.blog-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.blog-meta i {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: currentColor;
    opacity: .5;
}

.blog-category {
    position: relative;
    z-index: 2;
    padding: 5px 11px;
    border-radius: 999px;
    background: var(--yellow-soft);
    color: var(--blue-dark);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
    text-decoration: none;
    transition: background .3s var(--ease);
}

.blog-category:hover {
    background: var(--yellow);
}


/* =========================================================
   LISTING: toolbar (filters + search)
========================================================= */

.blog-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 44px;
}

.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.blog-filter {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    padding: 0 18px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--white);
    color: var(--text);
    font-family: inherit;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
    transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}

.blog-filter small {
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
}

.blog-filter:hover {
    border-color: var(--blue);
}

.blog-filter.active {
    border-color: var(--blue-dark);
    background: var(--blue-dark);
    color: var(--white);
}

.blog-filter.active small {
    color: var(--yellow);
}

.blog-search {
    position: relative;
    flex: 0 1 340px;
}

.blog-search input {
    width: 100%;
    min-height: 46px;
    padding: 0 18px 0 44px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--white);
    color: var(--text);
    font: inherit;
    font-size: 14px;
}

.blog-search input:focus {
    outline: none;
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(18, 63, 104, .08);
}

.blog-search > span {
    position: absolute;
    top: 50%;
    left: 18px;
    transform: translateY(-50%);
    color: var(--muted);
    pointer-events: none;
}

.blog-status {
    margin: -26px 0 30px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.blog-status button {
    margin-left: 8px;
    padding: 0;
    border: 0;
    background: none;
    color: var(--blue);
    font: inherit;
    text-decoration: underline;
    cursor: pointer;
}


/* =========================================================
   LISTING: featured article
========================================================= */

.blog-featured {
    position: relative;
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    overflow: hidden;
    margin-bottom: 56px;
    border-radius: var(--radius-xl);
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.blog-featured-image {
    position: relative;
    display: block;
    min-height: 420px;
    overflow: hidden;
    background: var(--blue-soft);
}

.blog-featured-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .9s var(--ease);
}

.blog-featured:hover .blog-featured-image img {
    transform: scale(1.04);
}

.blog-featured-badge {
    position: absolute;
    top: 22px;
    left: 22px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--yellow);
    color: var(--blue-deep);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.blog-featured-body {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 16px;
    padding: clamp(30px, 4vw, 56px);
}

.blog-featured-body h2 {
    margin: 0;
    font-size: clamp(26px, 2.6vw, 36px);
}

.blog-featured-body p {
    margin: 0;
}


/* =========================================================
   CARD GRID (listing + related articles)
========================================================= */

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
}

.blog-card {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--white);
    transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.blog-card-image {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--blue-soft);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .9s var(--ease);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 26px;
}

.blog-card-body h3 {
    margin: 0;
    font-size: 21px;
}

.blog-featured h2 a,
.blog-card h3 a {
    color: inherit;
    text-decoration: none;
}

/* The whole card is clickable through its title link */
.blog-card h3 a::after,
.blog-featured h2 a::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
}

.blog-card-body p {
    flex: 1;
    margin: 0;
    font-size: 15px;
}

.blog-card .text-link {
    pointer-events: none;
}

.blog-empty {
    padding: 70px 20px;
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.blog-empty h3 {
    margin: 0 0 8px;
}

.blog-empty p {
    margin: 0;
}

.blog-more-wrap {
    display: flex;
    justify-content: center;
    margin-top: 48px;
}

.blog-section-head {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 40px;
}

.blog-section-head h2 {
    margin: 0;
}

.blog-appear {
    animation: blogAppear .7s var(--ease) both;
}

@keyframes blogAppear {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
}


/* =========================================================
   LISTING: topic cards
========================================================= */

.blog-topics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.blog-topic {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 190px;
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--white);
    color: var(--text);
    text-decoration: none;
    transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease);
}

.blog-topic:hover {
    transform: translateY(-4px);
    border-color: var(--yellow);
    box-shadow: var(--shadow-sm);
}

.blog-topic small {
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
}

.blog-topic strong {
    font-size: 20px;
    line-height: 1.2;
}

.blog-topic span {
    color: var(--body);
    font-size: 14px;
    line-height: 1.55;
}

.blog-topic em {
    margin-top: auto;
    color: var(--blue);
    font-size: 13px;
    font-style: normal;
    font-weight: 800;
}


/* =========================================================
   ARTICLE LAYOUT
========================================================= */

.post-section {
    background: var(--white);
}

.post-layout {
    display: grid;
    grid-template-columns: minmax(0, 760px) 300px;
    justify-content: space-between;
    gap: 60px;
}

.post-article,
.post-aside {
    min-width: 0;
}

.post-lead {
    margin: 0 0 34px;
    padding-bottom: 34px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-size: clamp(19px, 1.7vw, 22px);
    font-weight: 500;
    line-height: 1.6;
}

.post-cover {
    margin: 0 0 40px;
}

.post-cover img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.post-body {
    color: var(--body);
    font-size: 18px;
    line-height: 1.8;
}

.post-body > * {
    margin: 0;
}

.post-body > * + * {
    margin-top: 22px;
}

.post-body h2 {
    margin-top: 54px;
    color: var(--text);
    font-size: clamp(26px, 2.4vw, 32px);
    scroll-margin-top: 110px;
}

.post-body h3 {
    margin-top: 36px;
    color: var(--text);
    font-size: clamp(20px, 1.8vw, 23px);
    scroll-margin-top: 110px;
}

.post-body strong {
    color: var(--text);
}

.post-body a {
    color: var(--blue);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--yellow);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

.post-body a:hover {
    color: var(--blue-dark);
}

.post-body ul,
.post-body ol {
    padding-left: 24px;
}

.post-body li + li {
    margin-top: 10px;
}

.post-body li::marker {
    color: var(--yellow-dark);
    font-weight: 800;
}

/* Numbered steps: 01, 02 ... like the rest of the site */
.post-body .post-steps {
    padding: 0;
    list-style: none;
    counter-reset: step;
}

.post-body .post-steps li {
    position: relative;
    padding: 20px 0 20px 64px;
    border-top: 1px solid var(--border);
    counter-increment: step;
}

.post-body .post-steps li + li {
    margin-top: 0;
}

.post-body .post-steps li:last-child {
    border-bottom: 1px solid var(--border);
}

.post-body .post-steps li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    top: 22px;
    left: 0;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}

/* Checklist with ✓ ticks */
.post-body .post-checklist {
    padding: 0;
    list-style: none;
}

.post-body .post-checklist li {
    position: relative;
    padding-left: 38px;
}

.post-body .post-checklist li::before {
    content: "✓";
    position: absolute;
    top: 3px;
    left: 0;
    display: grid;
    place-items: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--yellow-soft);
    color: var(--blue-dark);
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
}

.post-body blockquote {
    margin: 44px 0;
    padding: 6px 0 6px 28px;
    border-left: 4px solid var(--yellow);
}

.post-body blockquote p {
    margin: 0;
    color: var(--text);
    font-size: clamp(22px, 2.2vw, 28px);
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -.02em;
}

.post-body blockquote cite {
    display: block;
    margin-top: 12px;
    color: var(--muted);
    font-size: 14px;
    font-style: normal;
    font-weight: 700;
}

.post-callout {
    padding: 26px 28px;
    border-radius: var(--radius-md);
    background: var(--yellow-soft);
    color: var(--text);
}

.post-callout strong {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.post-callout p {
    margin: 0;
    font-size: 16px;
    line-height: 1.7;
}

.post-body figure img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.post-body figcaption {
    margin-top: 10px;
    color: var(--muted);
    font-size: 14px;
}

.post-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.post-body table {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
    font-size: 15px;
    line-height: 1.55;
}

.post-body th,
.post-body td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.post-body th {
    background: var(--blue-soft);
    color: var(--text);
    font-weight: 800;
}

.post-body tr:last-child td {
    border-bottom: 0;
}


/* ---------- FAQ inside an article ---------- */

.post-faq {
    margin-top: 54px;
}

.post-faq h2 {
    margin: 0 0 20px;
    font-size: clamp(26px, 2.4vw, 32px);
}

.post-faq details {
    border-top: 1px solid var(--border);
}

.post-faq details:last-child {
    border-bottom: 1px solid var(--border);
}

.post-faq summary {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 0;
    color: var(--text);
    font-size: 18px;
    font-weight: 700;
    list-style: none;
    cursor: pointer;
}

.post-faq summary::-webkit-details-marker {
    display: none;
}

.post-faq summary::after {
    content: "+";
    flex-shrink: 0;
    color: var(--blue);
    font-size: 22px;
    line-height: 1;
    transition: transform .4s var(--ease);
}

.post-faq details[open] summary::after {
    transform: rotate(45deg);
}

.post-faq details p {
    margin: 0;
    padding: 0 0 22px;
    color: var(--body);
    font-size: 16px;
    line-height: 1.75;
}


/* ---------- Tags, author, prev/next ---------- */

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 48px;
}

.post-tags a {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    transition: border-color .3s var(--ease), background .3s var(--ease);
}

.post-tags a:hover {
    border-color: var(--yellow);
    background: var(--yellow-soft);
}

.post-author {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-top: 40px;
    padding: 28px;
    border-radius: var(--radius-lg);
    background: var(--blue-soft);
}

.post-author-mark {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--blue-dark);
    color: var(--yellow);
    font-size: 20px;
    font-weight: 800;
}

.post-author small {
    display: block;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.post-author strong {
    display: block;
    margin: 4px 0 6px;
    color: var(--text);
    font-size: 18px;
}

.post-author p {
    margin: 0;
    font-size: 15px;
}

.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-top: 40px;
}

.post-nav a {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 22px 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-weight: 700;
    line-height: 1.4;
    text-decoration: none;
    transition: border-color .3s var(--ease), transform .4s var(--ease);
}

.post-nav a:hover {
    border-color: var(--blue);
    transform: translateY(-3px);
}

.post-nav small {
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.post-nav .post-nav-next {
    grid-column: 2;
    text-align: right;
}


/* ---------- Sidebar ---------- */

.post-aside {
    position: relative;
}

.post-aside-inner {
    position: sticky;
    top: 110px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.post-aside-card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--white);
}

.post-aside-card > small,
.post-toc summary {
    display: block;
    margin-bottom: 12px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.post-aside-card > strong {
    display: block;
    color: var(--text);
    font-size: 17px;
    line-height: 1.35;
}

.post-aside-card > span {
    display: block;
    margin-top: 6px;
    color: var(--body);
    font-size: 14px;
}

.post-toc summary {
    list-style: none;
    cursor: default;
    pointer-events: none;
}

.post-toc summary::-webkit-details-marker {
    display: none;
}

.post-toc ol {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: toc;
}

.post-toc li {
    counter-increment: toc;
}

.post-toc a {
    display: flex;
    gap: 10px;
    padding: 8px 0;
    color: var(--body);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    text-decoration: none;
    transition: color .3s var(--ease);
}

.post-toc a::before {
    content: counter(toc, decimal-leading-zero);
    flex-shrink: 0;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    line-height: 1.9;
}

.post-toc a:hover,
.post-toc a.active {
    color: var(--blue-dark);
}

.post-toc a.active::before {
    color: var(--yellow-dark);
}

.post-share {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.post-share a,
.post-share button {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--white);
    color: var(--blue-dark);
    font-family: inherit;
    font-size: 12px;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
    transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}

.post-share a:hover,
.post-share button:hover {
    border-color: var(--blue-dark);
    background: var(--blue-dark);
    color: var(--white);
}

.post-share-status {
    display: block;
    min-height: 18px;
    margin-top: 10px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.post-aside-cta {
    border: 0;
    background: var(--blue-deep);
}

.post-aside-cta > small {
    color: var(--yellow);
}

.post-aside-cta > strong {
    margin-bottom: 16px;
    color: var(--white);
}

.post-aside-cta .btn {
    width: 100%;
    justify-content: center;
}


/* =========================================================
   NEXT STEP BAND (end of every article)
========================================================= */

.post-next {
    padding: clamp(60px, 7vw, 96px) 0;
    background: var(--yellow);
}

.post-next-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.post-next .eyebrow {
    color: var(--blue-deep);
}

.post-next h2 {
    max-width: 760px;
    margin: 12px 0 0;
    color: var(--blue-deep);
}

.post-next-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}


/* =========================================================
   RESPONSIVE
========================================================= */

@media (max-width: 1180px) {

    .blog-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .blog-topics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .post-layout {
        grid-template-columns: minmax(0, 1fr) 270px;
        gap: 44px;
    }
}

@media (max-width: 920px) {

    .blog-hero {
        min-height: 500px;
        padding: 140px 0 56px;
    }

    .blog-featured {
        grid-template-columns: 1fr;
    }

    .blog-featured-image {
        min-height: 280px;
    }

    .blog-search {
        flex: 1 1 100%;
    }

    .post-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    /* On phones the sidebar moves above the article, as a compact bar */
    .post-aside {
        order: -1;
    }

    .post-aside-inner {
        position: static;
    }

    .post-aside-card:not(.post-toc):not(.post-share-card) {
        display: none;
    }

    .post-toc summary {
        position: relative;
        margin: 0;
        pointer-events: auto;
        cursor: pointer;
    }

    .post-toc summary::after {
        content: "+";
        position: absolute;
        right: 0;
        top: -2px;
        color: var(--blue);
        font-size: 18px;
    }

    .post-toc[open] summary {
        margin-bottom: 12px;
    }

    .post-toc[open] summary::after {
        content: "−";
    }
}

@media (max-width: 640px) {

    .blog-grid,
    .blog-topics {
        grid-template-columns: 1fr;
    }

    .blog-filters {
        flex-wrap: nowrap;
        margin: 0 -24px;
        padding: 0 24px 4px;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .blog-filters::-webkit-scrollbar {
        display: none;
    }

    .post-body {
        font-size: 17px;
    }

    .post-nav {
        grid-template-columns: 1fr;
    }

    .post-nav .post-nav-next {
        grid-column: auto;
    }

    .post-author {
        flex-direction: column;
    }

    .blog-breadcrumb [aria-current] {
        max-width: 22ch;
    }
}

@media (prefers-reduced-motion: reduce) {

    .blog-appear {
        animation: none;
    }

    .blog-card,
    .blog-card img,
    .blog-featured img,
    .blog-topic,
    .post-nav a {
        transition: none;
    }
}

@media print {

    .site-header,
    .page-progress,
    .mobile-navigation,
    .mobile-action-bar,
    .enquiry-modal,
    .post-aside,
    .post-nav,
    .post-next,
    #postRelated,
    .enquiry-section,
    .site-footer {
        display: none !important;
    }

    .blog-hero {
        min-height: 0;
        padding: 0 0 24px;
        background: none;
        color: #000;
    }

    .blog-hero-image,
    .blog-hero-overlay {
        display: none;
    }

    .blog-hero h1,
    .blog-hero p {
        color: #000;
    }
}