/* =============================================================================
   Insights — index + individual post
   Uses canonical design system tokens.
   ============================================================================= */

/* -------- Insights index -------------------------------------------------- */
.insight-filter {
    position: sticky;
    top: var(--nav-h);
    z-index: 50;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: var(--blur-strong);
    -webkit-backdrop-filter: var(--blur-strong);
    border-bottom: 1px solid var(--overlay-border-weak);
    padding: var(--s-3) var(--s-6);
}
.insight-filter__inner {
    max-width: var(--content-max);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: var(--s-4);
    align-items: center;
}
.insight-filter__group {
    display: flex;
    gap: var(--s-1);
    background: var(--overlay-weak);
    border-radius: var(--radius-xs);
    padding: 4px;
}
.insight-filter__btn {
    background: transparent;
    border: none;
    color: var(--fg-4);
    font-size: var(--body-xs-size);
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 4px;
    transition: background var(--duration-fast) var(--ease-standard),
                color var(--duration-fast) var(--ease-standard);
}
.insight-filter__btn.active {
    background: var(--brand-blue);
    color: var(--fg-1);
}
.insight-filter__select {
    background: var(--surface-elevated);
    border: 1px solid var(--overlay-border-medium);
    color: var(--fg-3);
    padding: 8px var(--s-3);
    border-radius: var(--radius-xs);
    font-size: var(--body-xs-size);
    font-family: inherit;
}

/* -------- Featured Insight card -------------------------------------------- */
.insight-featured {
    background: var(--surface-elevated);
    border: 1px solid var(--overlay-border-weak);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: var(--s-7);
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    transition: border-color var(--duration-base) var(--ease-standard);
}
.insight-featured:hover { border-color: var(--brand-blue-light); }
.insight-featured__media {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    min-height: 320px;
    background-size: cover;
    background-position: center;
}
.insight-featured__body {
    padding: var(--s-7);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.insight-featured__eyebrow {
    color: var(--brand-blue-light);
    font-size: var(--label-size);
    font-weight: var(--label-weight);
    text-transform: var(--label-transform);
    letter-spacing: 0.1em;
    margin-bottom: var(--s-3);
}
.insight-featured__title {
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--fg-1);
    margin: 0 0 var(--s-4);
    letter-spacing: -0.01em;
}
.insight-featured__summary {
    color: var(--fg-3);
    line-height: 1.7;
    margin: 0 0 var(--s-5);
}

@media (max-width: 768px) {
    .insight-featured { grid-template-columns: 1fr; }
    .insight-featured__media { min-height: 200px; }
    .insight-featured__body { padding: var(--s-5); }
}

/* -------- Insight card (used in index grid) ------------------------------- */
.insight-card {
    background: var(--surface-elevated);
    border: 1px solid var(--overlay-border-weak);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--duration-base) var(--ease-standard),
                transform var(--duration-base) var(--ease-standard);
}
.insight-card:hover {
    border-color: var(--brand-blue-rule);
    transform: translateY(-2px);
}
.insight-card__media {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    aspect-ratio: 16 / 9;
    background-size: cover;
    background-position: center;
}
.insight-card__body {
    padding: var(--s-5);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.insight-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--s-2);
    margin-bottom: var(--s-3);
}
.insight-card__tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    color: var(--fg-4);
    background: var(--overlay-weak);
    padding: 3px 10px;
    border-radius: 4px;
}
.insight-card__tag--division {
    color: var(--brand-blue-light);
    background: var(--brand-blue-tint);
}
.insight-card__title {
    font-size: var(--h4-size);
    font-weight: 700;
    color: var(--fg-1);
    margin: 0 0 var(--s-3);
    line-height: 1.35;
}
.insight-card__summary {
    color: var(--fg-3);
    font-size: 0.92rem;
    line-height: 1.6;
    margin: 0 0 var(--s-4);
    flex: 1;
}
.insight-card__meta {
    color: var(--fg-5);
    font-size: 0.78rem;
    border-top: 1px solid var(--overlay-border-weak);
    padding-top: var(--s-3);
    display: flex;
    justify-content: space-between;
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--s-5);
}

/* -------- Individual Insight post — hero ---------------------------------- */
.post-hero {
    position: relative;
    min-height: 50vh;
    padding: var(--s-9) var(--s-6) var(--s-7);
    display: flex;
    align-items: flex-end;
    background-color: var(--surface-elevated);
    background-size: cover;
    background-position: center;
    margin-top: var(--nav-h);
}
.post-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
              rgba(2, 6, 23, 0.30) 0%,
              rgba(2, 6, 23, 0.60) 60%,
              rgba(2, 6, 23, 0.95) 100%);
    z-index: 1;
}
.post-hero__inner {
    max-width: var(--content-max);
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 2;
}
.post-hero__division {
    color: var(--brand-blue-light);
    font-size: var(--label-xs-size);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-bottom: 0.75rem;
}
.post-hero__title {
    font-size: clamp(2rem, 4vw, var(--display-1-size));
    font-weight: var(--display-1-weight);
    line-height: var(--display-1-lh);
    color: var(--fg-1);
    margin: 0 0 0.75rem;
    letter-spacing: var(--display-1-tracking);
    max-width: 900px;
    text-shadow: var(--shadow-text-hero);
}
.post-hero__subtitle {
    font-size: 1.25rem;
    color: var(--fg-3);
    max-width: 720px;
    line-height: 1.5;
    text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}

.post-byline {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 1.5rem var(--s-6);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    color: var(--fg-4);
    font-size: 0.85rem;
    border-bottom: 1px solid var(--overlay-border-weak);
}
.post-byline__photo {
    width: 44px; height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--overlay-border-medium);
    background: var(--surface-elevated);
}
.post-byline__author { color: var(--fg-1); font-weight: 600; font-size: 0.95rem; }

.post-body {
    max-width: calc(var(--prose-max) + var(--s-6) * 2);
    margin: 0 auto;
    padding: var(--s-7) var(--s-6) var(--s-8);
}

.exec-summary {
    background: var(--surface-elevated);
    border: 1px solid var(--overlay-border-weak);
    border-left: 3px solid var(--brand-blue-light);
    border-radius: var(--radius-md);
    padding: 1.5rem 1.75rem;
    margin-bottom: 2.5rem;
}
.exec-summary__label {
    color: var(--brand-blue-light);
    font-size: var(--label-xs-size);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
}
.exec-summary__body {
    color: var(--fg-2);
    line-height: 1.7;
    font-size: 1rem;
}
.exec-summary__body p { margin: 0 0 0.75rem; }
.exec-summary__body p:last-child { margin-bottom: 0; }
.exec-summary__body ul { margin: 0; padding-left: var(--s-5); }

.post-end {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: var(--s-8) var(--s-6);
    border-top: 1px solid var(--overlay-border-weak);
}
.post-end__related-title {
    color: var(--fg-4);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 600;
    margin-bottom: var(--s-4);
}
.post-end__cta {
    margin-top: var(--s-8);
    padding: var(--s-7);
    background: var(--surface-elevated);
    border: 1px solid var(--overlay-border-weak);
    border-radius: 12px;
    text-align: center;
}
.post-end__cta-text {
    color: var(--fg-1);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 0 var(--s-4);
}

/* -------- Author mini bio ------------------------------------------------- */
.author-mini {
    display: flex;
    align-items: center;
    gap: var(--s-4);
    background: var(--surface-elevated);
    border: 1px solid var(--overlay-border-weak);
    border-radius: var(--radius-md);
    padding: var(--s-4);
    margin-top: var(--s-6);
}
.author-mini__photo {
    width: 64px; height: 64px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}
.author-mini__name { color: var(--fg-1); font-weight: 600; margin: 0 0 4px; font-size: 0.95rem; }
.author-mini__bio { color: var(--fg-4); font-size: 0.85rem; line-height: 1.5; margin: 0; }
.author-mini__bio a { color: var(--brand-blue-light); }

/* -------- Topic-group context banner (from a service "Learn More") -------- */
#insight-context-clear {
    margin-left: auto;
    background: transparent;
    border: 1px solid var(--brand-blue-light);
    color: var(--brand-blue-light);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}
#insight-context-clear:hover { background: var(--brand-blue); color: #fff; }