/*
 * ══════════════════════════════════════════════════════════════
 *  FEATURED INSIGHTS - /insights.html
 *  Tone: Editorial authority. Intelligence publication aesthetic.
 * ══════════════════════════════════════════════════════════════
 */

/* ── PAGE HERO ────────────────────────────────────────────── */

.ins-hero {
  background: var(--cis-black);
  padding: calc(var(--space-20) + 92px) 0 var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  position: relative;
  overflow: hidden;
}

/* Subtle horizontal rule lines - editorial newspaper feel */
.ins-hero__rules {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 59px,
      rgba(206,176,78,0.8) 60px
    );
}

.ins-hero .eyebrow { color: var(--cis-gold); }

.ins-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.5vw, 4rem);
  font-weight: var(--weight-semibold);
  color: var(--cis-silver);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: var(--space-4) 0 var(--space-5);
  max-width: 780px;
}

.ins-hero p {
  font-size: var(--text-lg);
  color: rgba(205,213,224,0.55);
  max-width: 620px;
  line-height: var(--leading-relaxed);
}

/* ── CATEGORY FILTER ──────────────────────────────────────── */

.ins-filter {
  background: var(--cis-black);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-5) 0;
  position: sticky;
  top: 72px; /* header height */
  z-index: 10;
}

.ins-filter__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.ins-filter__inner::-webkit-scrollbar { display: none; }

.ins-filter__label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: rgba(205,213,224,0.3);
  white-space: nowrap;
  flex-shrink: 0;
  padding-right: var(--space-3);
  border-right: 1px solid rgba(255,255,255,0.08);
  margin-right: var(--space-1);
}

.ins-filter__btn {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.1);
  background: transparent;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: rgba(205,213,224,0.5);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.ins-filter__btn:hover,
.ins-filter__btn[data-active="true"] {
  border-color: var(--cis-gold);
  color: var(--cis-gold);
  background: rgba(206,176,78,0.06);
}

/* ── FEATURED ARTICLE (TOP PICK) ──────────────────────────── */

.ins-featured {
  background: var(--cis-black);
  padding: var(--space-14) 0 var(--space-6);
}

.ins-featured-card {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--space-12);
  align-items: center;
  padding: var(--space-12);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.015);
  transition: border-color var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.ins-featured-card:hover {
  border-color: rgba(206,176,78,0.2);
}

.ins-featured-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.ins-featured-badge {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--cis-black);
  background: var(--cis-gold);
  padding: 3px 8px;
  border-radius: 2px;
}

.ins-featured-sector {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: rgba(205,213,224,0.4);
}

.ins-featured-card h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.4rem);
  font-weight: var(--weight-semibold);
  color: var(--cis-silver);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-5);
}

.ins-featured-card .ins-excerpt {
  font-size: var(--text-base);
  color: rgba(205,213,224,0.55);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-7);
  max-width: none;
}

.ins-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(205,213,224,0.35);
  letter-spacing: var(--tracking-wide);
}

.ins-meta__sep { opacity: 0.3; }

.ins-read-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--cis-gold);
  margin-top: var(--space-6);
  transition: gap var(--transition-fast);
}
.ins-featured-card:hover .ins-read-link { gap: var(--space-3); }

/* Abstract visual for featured article */
.ins-featured-visual {
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0A1525 0%, #0D1B2A 60%, #091220 100%);
  border: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.ins-featured-visual__pattern {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(206,176,78,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(206,176,78,0.5) 1px, transparent 1px);
  background-size: 40px 40px;
}

.ins-featured-visual__icon {
  position: relative;
  z-index: 1;
  color: rgba(206,176,78,0.25);
}

.ins-featured-visual__icon svg {
  width: 80px;
  height: 80px;
}

/* ── ARTICLE GRID ─────────────────────────────────────────── */

.ins-grid-section {
  background: var(--cis-black);
  padding: var(--space-6) 0 var(--space-20);
}

.ins-grid-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

.ins-grid-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--cis-silver);
  letter-spacing: var(--tracking-tight);
}

.ins-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.ins-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,0.015);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-base), transform var(--transition-fast);
}

.ins-card:hover {
  border-color: rgba(206,176,78,0.18);
  transform: translateY(-2px);
}

.ins-card__visual {
  height: 160px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

/* Sector-tinted card visuals */
.ins-card__visual--vc {
  background: linear-gradient(135deg, #070D1A, #0C1B38);
}
.ins-card__visual--ent {
  background: linear-gradient(135deg, #090F0B, #0F2016);
}
.ins-card__visual--grants {
  background: linear-gradient(135deg, #160E28, #1F1440);
}
.ins-card__visual--pub {
  background: linear-gradient(135deg, #0F0A14, #1C1228);
}
.ins-card__visual--all {
  background: linear-gradient(135deg, #0D1321, #111B2E);
}

.ins-card__visual-grid {
  position: absolute;
  inset: 0;
  opacity: 0.1;
  background-image:
    linear-gradient(rgba(206,176,78,0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(206,176,78,0.6) 1px, transparent 1px);
  background-size: 30px 30px;
}

.ins-card__visual-icon {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  color: rgba(206,176,78,0.2);
}
.ins-card__visual-icon svg { width: 40px; height: 40px; }

.ins-card__body {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.ins-card__sector {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--cis-gold);
  margin-bottom: var(--space-3);
  opacity: 0.8;
}

.ins-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--cis-silver);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-3);
}

.ins-card p {
  font-size: var(--text-sm);
  color: rgba(205,213,224,0.45);
  line-height: var(--leading-relaxed);
  max-width: none;
  flex: 1;
  margin-bottom: var(--space-5);
}

.ins-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255,255,255,0.06);
  font-family: var(--font-ui);
  font-size: 10px;
  color: rgba(205,213,224,0.3);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.ins-card__arrow {
  color: var(--cis-gold);
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.ins-card:hover .ins-card__arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* ── RESPONSIVE ───────────────────────────────────────────── */

@media (max-width: 1024px) {
  .ins-featured-card {
    grid-template-columns: 1fr;
  }
  .ins-featured-visual { display: none; }
  .ins-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .ins-grid { grid-template-columns: 1fr; }
  .ins-filter { top: 60px; }
}