/* =====================================================
   Dual Accounts: Parallel Space — Blog page styles
   Builds on styles.css. Maps the blog component tokens
   onto the Dual Accounts palette (cornflower blue #6076FD).
   ===================================================== */

:root {
    --c-bg:           var(--white);
    --c-bg-soft:      var(--brand-50);
    --c-bg-alt:       var(--brand-100);
    --c-border:       var(--line);
    --c-text:         var(--ink);
    --c-text-soft:    #4b5168;
    --c-text-muted:   #8b90ad;
    --c-primary:      var(--brand);
    --c-primary-dark: var(--brand-darker);
    --c-shadow:       var(--shadow-soft);
    --grad-primary:   linear-gradient(135deg, var(--brand), var(--brand-dark));
    --grad-hero:      linear-gradient(135deg, var(--brand), var(--brand-darker));
    --font-display:   'Poppins', sans-serif;

    --header-h:   70px;
    --radius-lg:  22px;
    --radius-sm:  12px;
}

.blog-body { background: var(--c-bg); }
.blog-page { background: var(--c-bg); }

.blog-hero {
    background: var(--grad-hero);
    color: #fff;
    padding: clamp(60px, 9vw, 100px) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.blog-hero::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,.18) 0%, transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(0,0,0,.10) 0%, transparent 40%);
    pointer-events: none;
}
.blog-hero .container { position: relative; z-index: 1; }
.blog-hero .eyebrow {
    background: rgba(255,255,255,.18);
    color: #fff;
    border: 1px solid rgba(255,255,255,.25);
}
.blog-hero h1 { color: #fff; font-size: clamp(2.2rem, 4.6vw, 3.4rem); font-weight: 800; margin-bottom: 14px; }
.blog-hero p  { color: rgba(255,255,255,.92); font-size: 1.1rem; max-width: 640px; margin: 0 auto; }

/* -------------------- Listing -------------------- */
.blog-list-section { padding: clamp(50px, 7vw, 90px) 0; background: var(--c-bg-soft); }
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.blog-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--c-shadow);
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
    display: flex;
    flex-direction: column;
}
.blog-card:hover {
    transform: translateY(-6px);
    border-color: transparent;
    box-shadow: 0 30px 60px -15px rgba(96, 118, 253, .30);
}
.blog-card-media {
    display: block;
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--c-bg-alt);
}
.blog-card-media img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.blog-card:hover .blog-card-media img { transform: scale(1.05); }
.blog-card-tag {
    position: absolute;
    top: 14px; left: 14px;
    background: var(--grad-primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    box-shadow: 0 8px 16px -6px rgba(96, 118, 253, .45);
}
.blog-card-tag.inline {
    position: static;
    display: inline-block;
    margin-bottom: 16px;
}
.blog-card-body {
    padding: 22px 24px 26px;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 10px;
}
.blog-card-meta {
    display: flex;
    gap: 16px;
    color: var(--c-text-muted);
    font-size: .82rem;
}
.blog-card-meta i { margin-right: 4px; color: var(--c-primary); }
.blog-card h2 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin: 0;
    line-height: 1.35;
}
.blog-card h2 a { color: var(--c-text); transition: color .15s ease; }
.blog-card h2 a:hover { color: var(--c-primary); }
.blog-card p {
    color: var(--c-text-soft);
    font-size: .94rem;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card-link {
    margin-top: auto;
    font-weight: 600;
    color: var(--c-primary);
    align-self: flex-start;
    padding-top: 4px;
}
.blog-card-link i { transition: transform .2s ease; }
.blog-card-link:hover i { transform: translateX(4px); }

/* -------------------- Empty state -------------------- */
.blog-empty {
    text-align: center;
    padding: 80px 0;
    color: var(--c-text-soft);
}
.blog-empty i {
    font-size: 3.5rem;
    color: var(--c-primary);
    opacity: .65;
    margin-bottom: 20px;
    display: block;
}
.blog-empty h2 { color: var(--c-text); margin-bottom: 8px; }

/* -------------------- Pagination -------------------- */
.blog-pagination {
    margin-top: 50px;
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}
.blog-pagination a {
    min-width: 42px;
    height: 42px;
    border-radius: 10px;
    background: #fff;
    color: var(--c-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border: 1px solid var(--c-border);
    transition: background .2s ease, color .2s ease, box-shadow .2s ease;
    padding: 0 14px;
}
.blog-pagination a:hover { color: var(--c-primary); border-color: var(--c-primary); }
.blog-pagination a.active {
    background: var(--grad-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 20px -8px rgba(96, 118, 253, .55);
}

/* -------------------- Single post -------------------- */
.preview-banner {
    background: #eef0ff;
    color: var(--c-primary-dark);
    border-bottom: 1px solid #cdd4ff;
    padding: 14px 24px;
    text-align: center;
    font-weight: 500;
}
.preview-banner i { margin-right: 8px; }

.blog-post-head {
    background: var(--c-bg-soft);
    padding: 40px 0 50px;
}
.blog-post-head-inner {
    text-align: center;
    margin-top: 28px;
}
.back-link {
    color: var(--c-primary);
    font-weight: 600;
    font-size: .9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.back-link i { transition: transform .2s ease; }
.back-link:hover i { transform: translateX(-3px); }
.blog-post-head h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    max-width: 820px;
    margin: 0 auto 16px;
    line-height: 1.2;
    color: var(--c-text);
}
.blog-post-meta {
    display: flex;
    gap: 22px;
    justify-content: center;
    color: var(--c-text-muted);
    font-size: .92rem;
}
.blog-post-meta i { margin-right: 6px; color: var(--c-primary); }

.blog-post-cover {
    margin-top: -20px;
    max-width: 860px;
}
.blog-post-cover img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: center;
    border-radius: var(--radius-lg);
    box-shadow: 0 30px 60px -20px rgba(27, 31, 59, .25);
}
@media (max-width: 640px) {
    .blog-post-cover img { aspect-ratio: 4 / 3; }
}

.blog-post-body {
    font-size: 1.08rem;
    line-height: 1.8;
    color: var(--c-text);
}
.blog-post-body h1,
.blog-post-body h2,
.blog-post-body h3,
.blog-post-body h4 {
    font-family: var(--font-display);
    margin-top: 1.8em;
    margin-bottom: .6em;
    line-height: 1.3;
    color: var(--c-text);
}
.blog-post-body h2 { font-size: 1.7rem; }
.blog-post-body h3 { font-size: 1.35rem; }
.blog-post-body p  { margin: 0 0 1.2em; color: var(--c-text-soft); }
.blog-post-body a  { color: var(--c-primary); text-decoration: underline; text-decoration-color: rgba(96,118,253,.4); }
.blog-post-body a:hover { text-decoration-color: var(--c-primary); }
.blog-post-body strong { color: var(--c-text); }
.blog-post-body ul,
.blog-post-body ol { padding-left: 1.4em; margin: 0 0 1.4em; }
.blog-post-body li { margin: .35em 0; color: var(--c-text-soft); }
.blog-post-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 1.6em auto;
    display: block;
    box-shadow: 0 16px 36px -16px rgba(27, 31, 59, .25);
}
.blog-post-body blockquote {
    border-left: 4px solid var(--c-primary);
    background: var(--c-bg-soft);
    padding: 18px 22px;
    margin: 1.6em 0;
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--c-text-soft);
}
.blog-post-body blockquote p:last-child { margin-bottom: 0; }
.blog-post-body code {
    background: var(--c-bg-soft);
    padding: 2px 6px;
    border-radius: 6px;
    font-size: .92em;
    color: var(--c-primary-dark);
}
.blog-post-body pre {
    background: #0f1330;
    color: #e2eaf5;
    padding: 22px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 1.6em 0;
}
.blog-post-body pre code { background: none; padding: 0; color: inherit; }
.blog-post-body hr {
    border: 0;
    border-top: 1px solid var(--c-border);
    margin: 2em 0;
}

.blog-post-tags {
    margin-top: 36px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.blog-tag {
    background: var(--c-bg-soft);
    color: var(--c-text-soft);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: .82rem;
    font-weight: 500;
    border: 1px solid var(--c-border);
}

.blog-post-cta {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--c-border);
}
.btn-outline {
    background: transparent;
    color: var(--c-primary);
    border: 1px solid var(--c-primary);
}
.btn-outline:hover {
    background: var(--c-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* -------------------- Single post: layout -------------------- */
.blog-post-layout {
    display: flex;
    align-items: flex-start;
    gap: 44px;
    padding-top: 56px;
    padding-bottom: 80px;
}
.blog-post-main {
    flex: 1 1 auto;
    min-width: 0;
}

/* Table of contents (left) */
.blog-toc-col { flex: 0 0 248px; }
.blog-toc {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 22px 22px 24px;
    box-shadow: var(--c-shadow);
}
.blog-toc-title {
    font-size: .82rem;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--c-text-muted);
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.blog-toc-title i { color: var(--c-primary); }
.blog-toc ul { list-style: none; margin: 0; padding: 0; }
.blog-toc li { margin: 0; }
.blog-toc li.toc-h3 { padding-left: 14px; }
.blog-toc a {
    display: block;
    padding: 7px 10px;
    border-left: 2px solid transparent;
    margin-left: -2px;
    color: var(--c-text-soft);
    font-size: .9rem;
    line-height: 1.4;
    border-radius: 0 6px 6px 0;
    transition: color .2s ease, background .2s ease, border-color .2s ease;
}
.blog-toc a:hover { color: var(--c-primary); background: var(--c-bg-soft); }
.blog-toc a.active {
    color: var(--c-primary);
    font-weight: 600;
    border-left-color: var(--c-primary);
    background: var(--c-bg-soft);
}

/* -------------------- Prev / Next article nav -------------------- */
.post-nav {
    margin-top: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.post-nav-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 20px 22px;
    box-shadow: var(--c-shadow);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
a.post-nav-card:hover {
    transform: translateY(-3px);
    border-color: var(--c-primary);
    box-shadow: 0 22px 44px -22px rgba(96, 118, 253, .45);
}
.post-nav-empty {
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
}
.post-nav-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--c-primary);
}
.post-nav-arrow {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--c-bg-soft);
    color: var(--c-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    flex-shrink: 0;
    transition: background .2s ease, color .2s ease;
}
a.post-nav-card:hover .post-nav-arrow { background: var(--grad-primary); color: #fff; }
.post-nav-next { text-align: right; }
.post-nav-next .post-nav-label { justify-content: flex-end; }
.post-nav-inner {
    display: flex;
    align-items: center;
    gap: 16px;
}
.post-nav-thumb {
    flex: 0 0 84px;
    width: 84px;
    height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.post-nav-thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-nav-text { min-width: 0; }
.post-nav-date {
    display: block;
    font-size: .82rem;
    color: var(--c-text-muted);
    margin-bottom: 4px;
}
.post-nav-title {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.35;
    color: var(--c-text);
}
a.post-nav-card:hover .post-nav-title { color: var(--c-primary); }

/* -------------------- Latest articles (end of post) -------------------- */
.blog-more {
    background: var(--c-bg-soft);
    border-top: 1px solid var(--c-border);
    padding: clamp(50px, 7vw, 80px) 0;
    margin-top: 30px;
}
.blog-more-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 32px;
}
.blog-more-head h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.1rem);
}
.blog-more-all {
    font-weight: 600;
    color: var(--c-primary);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.blog-more-all i { transition: transform .2s ease; }
.blog-more-all:hover i { transform: translateX(4px); }

/* -------------------- Responsive -------------------- */
@media (max-width: 1100px) {
    .blog-toc-col { display: none; }
}
@media (max-width: 992px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .blog-post-layout { flex-direction: column; gap: 50px; }
}
@media (max-width: 640px) {
    .blog-grid { grid-template-columns: 1fr; }
    .blog-post-cover { margin-top: -10px; }
    .blog-post-meta { flex-direction: column; gap: 6px; }
    .post-nav { grid-template-columns: 1fr; }
    .post-nav-empty { display: none; }
    .post-nav-next { text-align: left; }
    .post-nav-next .post-nav-label { justify-content: flex-start; flex-direction: row-reverse; }
    .post-nav-next .post-nav-inner { flex-direction: row-reverse; }
}