/* ============================================================================
   BLOG / KNOWLEDGE CENTRE — listing + individual article reading experience
   ----------------------------------------------------------------------------
   Token-driven; reuses the global design language (navy/blue/green, cards,
   radii, shadows). Loaded via $page_meta['css'] on blog pages only.
   ============================================================================ */

/* ----------------------------------------------------------------------------
   ARTICLE CARDS (listing grid + related)
   -------------------------------------------------------------------------- */
.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    text-decoration: none;
    box-shadow: var(--shadow-card-sm);
    transition:
        transform var(--transition-base),
        box-shadow var(--transition-base);
}
.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}
.blog-card__media {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--color-primary), var(--color-navy));
    overflow: hidden;
}
.blog-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}
.blog-card:hover .blog-card__media img { transform: scale(1.05); }
.blog-card__cat {
    position: absolute;
    left: 14px;
    top: 14px;
    z-index: 1;
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 0.74rem;
    letter-spacing: 0.02em;
    padding: 6px 12px;
    border-radius: var(--radius-pill);
}
.blog-card__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 24px;
    flex: 1 1 auto;
}
.blog-card__meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--color-text-secondary);
}
.blog-card__meta i { color: var(--color-primary); }
.blog-card__dot { opacity: 0.5; }
.blog-card__title {
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 1.14rem;
    line-height: 1.35;
    color: var(--color-navy);
    transition: color var(--transition-base);
}
.blog-card:hover .blog-card__title { color: var(--color-primary); }
.blog-card__excerpt {
    font-size: 0.94rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    flex: 1 1 auto;
}
.blog-card__more {
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 0.9rem;
    color: var(--color-primary);
}
.blog-card__more i { transition: transform var(--transition-base); }
.blog-card:hover .blog-card__more i { transform: translateX(4px); }

/* ----------------------------------------------------------------------------
   FEATURED ARTICLE (large horizontal card)
   -------------------------------------------------------------------------- */
.blog-featured {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card-md);
}
.blog-featured__media {
    position: relative;
    min-height: 340px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-navy));
}
.blog-featured__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-featured__body {
    padding: 44px 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.blog-featured__badge {
    align-self: flex-start;
    background: var(--color-accent-tint);
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 0.78rem;
    padding: 7px 14px;
    border-radius: var(--radius-pill);
    margin-bottom: 16px;
}
.blog-featured__title {
    font-family: var(--font-heading);
    font-weight: var(--fw-bold);
    font-size: 1.75rem;
    line-height: 1.25;
    color: var(--color-navy);
    margin-bottom: 14px;
}
.blog-featured__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}
.blog-featured__meta i { color: var(--color-primary); }
.blog-featured__excerpt {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* ----------------------------------------------------------------------------
   CATEGORY CARDS + TAG CHIPS + NEWSLETTER
   -------------------------------------------------------------------------- */
.blog-cat {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 16px 18px;
    text-decoration: none;
    box-shadow: var(--shadow-card-sm);
    transition:
        transform var(--transition-base),
        border-color var(--transition-base);
    height: 100%;
}
.blog-cat:hover { transform: translateY(-4px); border-color: var(--color-primary); }
.blog-cat i {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-tint);
    color: var(--color-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
}
.blog-cat:hover i { background: var(--color-primary); color: #fff; }
.blog-cat span {
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 0.96rem;
    color: var(--color-navy);
    line-height: 1.3;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    padding: 9px 18px;
    font-size: 0.9rem;
    font-weight: var(--fw-medium);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}
.tag-chip::before { content: "#"; color: var(--color-primary); font-weight: var(--fw-bold); }
.tag-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.newsletter {
    background: linear-gradient(120deg, var(--color-navy) 0%, var(--color-primary) 120%);
    border-radius: var(--radius-card-lg);
    padding: 52px 48px;
    color: #fff;
    text-align: center;
}
.newsletter h2 { color: #fff; margin-bottom: 12px; }
.newsletter p { color: rgba(255, 255, 255, 0.85); max-width: 560px; margin: 0 auto 26px; }
.newsletter__form {
    display: flex;
    gap: 12px;
    max-width: 520px;
    margin: 0 auto;
    flex-wrap: wrap;
}
.newsletter__form input {
    flex: 1 1 240px;
    height: 54px;
    border: none;
    border-radius: var(--radius-input);
    padding: 0 20px;
    font-family: var(--font-body);
    font-size: 1rem;
}
.newsletter__form input:focus-visible { outline: 3px solid var(--color-accent); }

/* ----------------------------------------------------------------------------
   READING PROGRESS BAR (fixed, top of viewport)
   -------------------------------------------------------------------------- */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    z-index: calc(var(--z-header) + 5);
    transition: width 0.1s linear;
}

/* ----------------------------------------------------------------------------
   ARTICLE LAYOUT — body + TOC sidebar + sticky share
   -------------------------------------------------------------------------- */
.article-wrap {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
}
.article-toc {
    position: sticky;
    top: 100px;
}
.article-toc__title {
    font-family: var(--font-heading);
    font-weight: var(--fw-bold);
    font-size: 0.82rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 14px;
}
.article-toc__list { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--color-border); }
.article-toc__list a {
    display: block;
    padding: 8px 0 8px 16px;
    margin-left: -2px;
    border-left: 2px solid transparent;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    text-decoration: none;
    transition: color var(--transition-base), border-color var(--transition-base);
}
.article-toc__list a:hover { color: var(--color-primary); }
.article-toc__list a.is-active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: var(--fw-semibold);
}

.article-body {
    max-width: 850px;
}
.article-body > h2 {
    font-size: 1.7rem;
    margin: 40px 0 16px;
    scroll-margin-top: 100px;
}
.article-body > h2:first-child { margin-top: 0; }
.article-body > h3 { font-size: 1.25rem; margin: 28px 0 12px; }
.article-body p { margin-bottom: 18px; line-height: 1.8; }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 22px; }
.article-body li { margin-bottom: 10px; line-height: 1.7; }
.article-body strong { color: var(--color-navy); }

/* Sticky share rail (desktop: vertical, left of body via flow; mobile: inline) */
.blog-share {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin: 0 0 28px;
}
.blog-share__label {
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-right: 4px;
}
.blog-share__btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-tint);
    color: var(--color-primary);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transition-base), background-color var(--transition-base), color var(--transition-base);
}
.blog-share__btn:hover { background: var(--color-primary); color: #fff; transform: translateY(-3px); }

/* ----------------------------------------------------------------------------
   CALLOUT BOXES (info / tip / warning / best-practice)
   -------------------------------------------------------------------------- */
.callout {
    display: flex;
    gap: 16px;
    border-radius: var(--radius-card);
    padding: 22px 24px;
    margin: 26px 0;
    border: 1px solid var(--color-border);
    border-left: 5px solid var(--color-primary);
    background: var(--color-smoke);
}
.callout__icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: #fff;
    font-size: 1rem;
}
.callout__title {
    font-family: var(--font-heading);
    font-weight: var(--fw-bold);
    color: var(--color-navy);
    margin-bottom: 4px;
}
.callout p { margin: 0; }
.callout--info { border-left-color: var(--color-primary); }
.callout--info .callout__icon { background: var(--color-primary); }
.callout--tip { border-left-color: var(--color-success); background: rgba(34, 197, 94, 0.07); }
.callout--tip .callout__icon { background: var(--color-success); }
.callout--warning { border-left-color: var(--color-warning); background: rgba(245, 158, 11, 0.08); }
.callout--warning .callout__icon { background: var(--color-warning); }
.callout--best { border-left-color: var(--color-accent); background: var(--color-accent-tint); }
.callout--best .callout__icon { background: var(--color-accent); color: var(--color-navy); }

/* ----------------------------------------------------------------------------
   IN-ARTICLE CTA + AUTHOR BIO
   -------------------------------------------------------------------------- */
.blog-inline-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    background: linear-gradient(120deg, var(--color-navy), var(--color-primary));
    border-radius: var(--radius-card-lg);
    padding: 32px 34px;
    margin: 36px 0;
    color: #fff;
}
.blog-inline-cta h3 { color: #fff; font-size: 1.3rem; margin-bottom: 6px; }
.blog-inline-cta p { color: rgba(255, 255, 255, 0.85); margin: 0; max-width: 460px; }

.blog-author {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--color-smoke);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card-lg);
    padding: 28px 30px;
    margin-top: 40px;
}
.blog-author__avatar {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary), var(--color-navy));
}
.blog-author__name { font-size: 1.1rem; margin-bottom: 6px; }
.blog-author__desc { margin: 0; color: var(--color-text-secondary); line-height: 1.7; }

/* ----------------------------------------------------------------------------
   BREADCRUMB (article hero)
   -------------------------------------------------------------------------- */
.breadcrumb-pci {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 18px;
}
.breadcrumb-pci a { color: rgba(255, 255, 255, 0.85); text-decoration: none; }
.breadcrumb-pci a:hover { color: var(--color-accent); }
.breadcrumb-pci .sep { opacity: 0.5; }
.article-hero__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 18px;
    margin-top: 18px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.92rem;
}
.article-hero__meta .badge-cat {
    background: var(--color-accent);
    color: var(--color-navy);
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: 0.8rem;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
}
.article-hero__meta i { color: var(--color-accent); }

/* ----------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .blog-featured { grid-template-columns: 1fr; }
    .blog-featured__media { min-height: 240px; }
    .blog-featured__body { padding: 32px 28px; }
    .article-wrap { grid-template-columns: 1fr; gap: 8px; }
    .article-toc { display: none; } /* TOC hidden on tablet/mobile per spec (collapsible future) */
}
@media (max-width: 767.98px) {
    .blog-featured__title { font-size: 1.4rem; }
    .newsletter { padding: 40px 24px; }
    .blog-inline-cta { padding: 26px 22px; }
    .blog-inline-cta .btn-pci { width: 100%; }
}