/* =========================================================
   Sorraia - Insights Page Stylesheet (Redesign)
   ========================================================= */

.pg-insights {
  --color-bg: #FAFAF8;
  --color-text: #1A1917;
  --color-accent: #2563EB;
  --color-accent-light: #EEF3FF;
  --color-accent-border: #C7D7FD;
  --color-dark-bg: #0F1117;
  --color-dark-surface: #0A0D14;
  --color-dark-border: rgba(200,205,214,0.08);
  --color-border: #EAE7E0;
  --color-muted: #666666;
  --color-mono-muted: #AAAAAA;
  --color-amber: #D97706;
  --color-green: #10B981;

  --font-serif: "IBM Plex Serif", Georgia, serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;
  --font-sans: "IBM Plex Sans", -apple-system, sans-serif;
}

.pg-insights {
  background: var(--color-bg) !important;
  color: var(--color-text) !important;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  --white: var(--color-bg); --off-white: var(--color-bg);
  --navy: var(--color-bg); --navy-mid: var(--color-bg); --surface: var(--color-bg);
  --text: var(--color-text); --text-mid: var(--color-muted);
  --text-muted: var(--color-muted); --text-faint: var(--color-mono-muted);
  --accent: var(--color-accent); --border: var(--color-border); --border-mid: var(--color-border);
}
.pg-insights *, .pg-insights *::before, .pg-insights *::after { box-sizing: border-box; }

.in-container { max-width: 1160px; margin: 0 auto; padding: 0 48px; }
.in-container--narrow { max-width: 780px; margin: 0 auto; padding: 0 48px; }

/* --- Nav overrides --- */
.pg-insights #navbar, .pg-insights #navbar.nav--dark,
.pg-insights #navbar.nav--light, .pg-insights #navbar.nav--scrolled {
  background: var(--color-bg) !important;
  border-bottom: 1px solid var(--color-border) !important;
  backdrop-filter: none !important; -webkit-backdrop-filter: none !important;
}
.pg-insights .nav-logo { color: var(--color-text) !important; }
.pg-insights .nav-logo svg path { fill: var(--color-text) !important; }
.pg-insights .nav-links a {
  font-family: var(--font-sans) !important; font-size: 13px !important;
  font-weight: 400 !important; letter-spacing: 0 !important;
  color: #666 !important; text-transform: none !important; text-decoration: none !important;
}
.pg-insights .nav-links a:hover { color: var(--color-text) !important; opacity: 1 !important; }
.pg-insights .nav-links a::after { display: none !important; }
.pg-insights .nav-toggle span { background: var(--color-text) !important; }
.pg-insights .nav-links li:last-child a {
  background: var(--color-accent) !important; color: #fff !important;
  font-family: var(--font-mono) !important; font-size: 11px !important;
  letter-spacing: 0.06em !important; padding: 9px 20px !important;
  border-radius: 0 !important; border: none !important;
}
.pg-insights .nav-links li:last-child a:hover { background: #1d4ed8 !important; }

/* --- STEP 5: HERO --- */
.in-hero {
  background: linear-gradient(135deg, #F0F4FF 0%, #FAFAF8 100%);
  padding: calc(var(--nav-h, 64px) + 72px) 0 56px;
}
.in-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.in-hero__headline {
  font-family: var(--font-serif) !important;
  font-size: 50px;
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--color-text) !important;
  margin: 0 0 18px;
  max-width: 640px;
}
.in-hero__headline em {
  font-style: italic;
  color: var(--color-accent);
  opacity: 1;
}
.in-hero__headline em::after { display: none; }
.in-hero__sub {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  color: #666;
  max-width: 520px;
}

/* --- STEP 6: FEATURED ARTICLE --- */
.in-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
  border-top: none;
  border-bottom: none;
}
.in-featured__left {
  padding: 48px;
  padding-right: 48px;
  border-right: 1px solid var(--color-border);
}
.in-featured__tag {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  display: inline-block;
  margin-right: 6px;
  margin-bottom: 14px;
}
.in-featured__tag:first-child {
  color: var(--color-accent);
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
}
.in-featured__tag:not(:first-child) {
  color: #666;
  background: transparent;
  border: 1px solid #DDD;
}
.in-featured__meta {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--color-mono-muted);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.in-featured__title {
  font-family: var(--font-serif) !important;
  font-size: 30px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text) !important;
  margin-bottom: 16px;
}
.in-featured__title a { color: inherit; text-decoration: none; }
.in-featured__title a:hover { color: var(--color-accent); }
.in-featured__excerpt {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  color: #555;
  margin-bottom: 20px;
}
.in-featured__link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent-border);
  padding-bottom: 2px;
}
.in-featured__link:hover { border-color: var(--color-accent); }

/* Featured right panel */
.in-featured__right {
  display: flex;
  flex-direction: column;
}
.in-featured__diagram {
  background: var(--color-dark-bg);
  padding: 36px 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex: 1;
  min-height: 200px;
  border: none;
}
.in-diagram-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.in-diagram-node__circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(200,205,214,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}
.in-diagram-node__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(200,205,214,0.25);
}
.in-diagram-node--active .in-diagram-node__circle {
  border-color: var(--color-accent);
  background: rgba(37,99,235,0.15);
}
.in-diagram-node--active .in-diagram-node__dot {
  background: var(--color-accent);
}
.in-diagram-node__label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(200,205,214,0.35);
}
.in-diagram-node--active .in-diagram-node__label {
  color: #60A5FA;
  opacity: 1;
}
.in-diagram-arrow {
  width: 28px;
  height: 1px;
  background: rgba(200,205,214,0.1);
  position: relative;
}
.in-diagram-arrow::after {
  content: "\2192";
  font-family: var(--font-mono);
  font-size: 10px;
  position: absolute;
  top: -8px;
  right: -6px;
  color: rgba(200,205,214,0.1);
  border: none;
}

.in-featured__quote {
  border-top: 1px solid var(--color-border);
  padding: 28px 36px;
  margin-top: 0;
}
.in-featured__quote-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  line-height: 1.55;
  color: #555;
}

/* --- STEP 7: FILTER TABS --- */
.in-filters {
  display: flex;
  padding: 0 48px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}
.in-filter {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #888;
  background: none;
  border: none;
  padding: 14px 18px;
  border-right: 1px solid var(--color-border);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s ease;
  position: relative;
}
.in-filter:first-child { padding-left: 0; }
.in-filter:last-child { border-right: none; }
.in-filter:hover { color: var(--color-text); }
.in-filter.is-active {
  color: var(--color-accent);
}
.in-filter.is-active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

/* --- STEP 8: ARTICLE GRID --- */
.in-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 48px 0;
}
.in-card {
  border-top: 3px solid var(--color-border);
  padding: 20px 0 0 0;
}
.in-card:first-child {
  border-top-color: var(--color-accent);
}
.in-card:nth-child(3n+2) { padding: 20px 0 0 0; }
.in-card:nth-child(3n) { padding: 20px 0 0 0; }
.in-card--soon { opacity: 0.5; }
.in-card__soon-badge {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-mono-muted);
  border: 1px dashed #DDD;
  padding: 3px 10px;
  display: inline-block;
  margin-bottom: 12px;
}
.in-card__tags { margin-bottom: 12px; }
.in-card__tag {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 9px;
  display: inline-block;
  margin-right: 5px;
}
.in-card:first-child .in-card__tag {
  color: var(--color-accent);
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
}
.in-card:not(:first-child) .in-card__tag {
  color: #666;
  background: transparent;
  border: 1px solid #DDD;
}
.in-card__title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text) !important;
  margin-bottom: 10px;
}
.in-card__title a { color: inherit; text-decoration: none; }
.in-card__title a:hover { color: var(--color-accent); }
.in-card__excerpt {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.65;
  color: #666;
  margin-bottom: 12px;
}
.in-card__meta {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--color-mono-muted);
  letter-spacing: 0.04em;
}

/* --- STEP 9: THESIS SECTION (DARK) --- */
.in-thesis {
  background: var(--color-dark-bg) !important;
  color: #C8CDD6 !important;
  padding: 64px 0 !important;
  border-top: none !important;
  border-bottom: none !important;
}
.in-thesis__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.in-thesis__eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.in-thesis__heading {
  font-family: var(--font-serif) !important;
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: #E8ECF2;
  margin-bottom: 18px;
}
.in-thesis__body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.75;
  color: #8B96B0;
}

/* Thesis cells */
.in-thesis__cells {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 24px;
}
.in-thesis__cell {
  flex: 1;
  padding: 18px;
  border: 1px solid var(--color-dark-border);
}
.in-thesis__cell--highlight {
  background: rgba(37,99,235,0.12);
  border-color: rgba(37,99,235,0.3);
}
.in-thesis__cell-text {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  color: rgba(200,205,214,0.5);
}
.in-thesis__cell--highlight .in-thesis__cell-text {
  color: #E8ECF2;
}
.in-thesis__quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.55;
  color: rgba(200,205,214,0.4);
  border-top: 1px solid var(--color-dark-border);
  padding-top: 20px;
}

/* --- STEP 10: NEWSLETTER SUBSCRIBE --- */
.in-subscribe {
  padding: 56px 0;
  border-top: 1px solid #F0E6D3;
  border-bottom: 1px solid #F0E6D3;
  background: #FFF9F0;
}
.in-subscribe__grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.in-subscribe__heading {
  font-family: var(--font-serif) !important;
  font-size: 26px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text) !important;
  margin-bottom: 8px;
}
.in-subscribe__heading em {
  font-style: italic;
  color: #D97706;
}
.in-subscribe__desc {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.7;
  color: #666;
}
.in-subscribe__form {
  display: flex;
  gap: 0;
  flex-shrink: 0;
}
.in-subscribe__input {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid #DDD;
  color: var(--color-text);
  outline: none;
  min-width: 220px;
}
.in-subscribe__input::placeholder { color: var(--color-mono-muted); }
.in-subscribe__input:focus { border-color: var(--color-accent); }
.in-subscribe__btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  font-weight: 500;
  padding: 12px 24px;
  background: #D97706;
  color: #fff;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s ease;
}
.in-subscribe__btn:hover { background: #1d4ed8; }

/* --- STEP 11: Footer overrides --- */
.pg-insights .footer {
  background: var(--color-bg) !important;
  border-top: 1px solid var(--color-border) !important;
  color: var(--color-text) !important;
  padding: 48px 0 !important;
}
.pg-insights .footer__grid {
  display: grid !important;
  grid-template-columns: 2fr 1fr 1fr 1fr !important;
  gap: 32px !important;
}
.pg-insights .footer__col-title {
  font-family: var(--font-mono); font-size: 9px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-text);
}
.pg-insights .footer__col-links a { font-family: var(--font-sans); font-size: 13px; color: #666; }
.pg-insights .footer__col-links a:hover { color: var(--color-text) !important; }
.pg-insights .footer__tagline { font-family: var(--font-sans); font-size: 13px; color: #999; line-height: 1.7; }
.pg-insights .footer__logo-text { color: var(--color-text) !important; }
.pg-insights .footer__logo-text svg path { fill: var(--color-text) !important; }
.pg-insights .footer__bottom {
  border-top: 1px solid var(--color-border);
  margin-top: 32px; padding-top: 20px;
}
.pg-insights .footer__copy, .pg-insights .footer__trust, .pg-insights .footer__legal {
  font-family: var(--font-mono); font-size: 9px; color: var(--color-mono-muted);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .in-featured { grid-template-columns: 1fr; gap: 0; }
  .in-featured__left { border-right: none; border-bottom: 1px solid var(--color-border); padding: 32px 0; }
  .in-grid { grid-template-columns: 1fr; }
  .in-card, .in-card:nth-child(3n+2), .in-card:nth-child(3n) { padding: 24px 0 0 0; }
  .in-thesis__grid { grid-template-columns: 1fr; gap: 36px; }
  .in-thesis__cells { flex-direction: column; }
  .in-subscribe__grid { flex-direction: column; align-items: flex-start; gap: 24px; }
  .in-filters { flex-wrap: wrap; gap: 0; padding: 0; }
  .in-filter { border-right: none; padding: 10px 14px; }
  .in-container { padding: 0 28px; }
  .in-container--narrow { padding: 0 28px; }
  .pg-insights .footer__grid { grid-template-columns: 1fr 1fr !important; }
}
@media (max-width: 768px) {
  .pg-insights .nav-links { background: var(--color-bg) !important; }
  .pg-insights .nav-links a { color: var(--color-text) !important; }
}
@media (max-width: 640px) {
  .in-hero__headline { font-size: clamp(28px, 7vw, 40px); }
  .in-hero { padding: calc(var(--nav-h, 64px) + 48px) 0 40px; }
  .in-subscribe__form { flex-direction: column; gap: 10px; }
  .in-subscribe__input { min-width: 0; }
  .in-container, .in-container--narrow { padding: 0 20px; }
  .in-thesis, .in-subscribe { padding: 48px 0 !important; }
  .in-filters { gap: 0; }
  .in-filter { font-size: 9px; padding: 8px 10px; }
  .pg-insights .footer__grid { grid-template-columns: 1fr !important; }
}

/* --- Scroll reveal animations --- */
.pg-insights .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.pg-insights .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Hover animations --- */
@media (hover: hover) {
  .in-card { transition: background 250ms ease; }
  .in-card:hover { background: rgba(37,99,235,0.02); }
  .in-card:hover .in-card__title a { color: var(--color-accent); }
  .in-filter { transition: color 200ms ease; }
  .in-subscribe__btn { transition: background 200ms ease; }
  .in-featured__title a { transition: color 200ms ease; }
}


/* =========================================================
   INSIGHTS PAGE ANIMATIONS
   ========================================================= */

/* Hero entrance */
.pg-insights .in-hero__eyebrow {
  animation: fadeInDown 0.6s ease both;
  animation-delay: 0.15s;
}
.pg-insights .in-hero__h1 {
  animation: fadeInDown 0.7s ease both;
  animation-delay: 0.3s;
}

/* Filter tab hover */
.pg-insights .in-filter__tab {
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  position: relative;
}
.pg-insights .in-filter__tab:hover {
  color: #2563EB;
  background: rgba(37,99,235,0.03);
}

/* Article card hover */
.pg-insights .in-article {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease;
}
.pg-insights .in-article:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

/* Article title underline draw */
.pg-insights .in-article__title {
  transition: color 0.2s ease;
}
.pg-insights .in-article:hover .in-article__title {
  color: #2563EB;
}

/* Featured article link hover */
.pg-insights .in-featured__link {
  transition: transform 0.2s ease, color 0.2s ease;
}
.pg-insights .in-featured__link:hover {
  transform: translateX(4px);
}

/* Tag pill hover */
.pg-insights .in-tag {
  transition: transform 0.2s ease, background 0.2s ease,
              box-shadow 0.2s ease, border-color 0.2s ease;
}
.pg-insights .in-tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(37,99,235,0.1);
}

/* Thesis cell hover */
.pg-insights .in-thesis__cell {
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.pg-insights .in-thesis__cell:hover {
  transform: translateY(-2px);
  border-color: rgba(96,165,250,0.4);
}

/* Newsletter input focus */
.pg-insights .in-nl__input {
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.pg-insights .in-nl__input:focus {
  border-color: #2563EB;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}

/* Newsletter submit button */
.pg-insights .in-nl__btn {
  transition: background 0.25s ease, transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.25s ease;
}
.pg-insights .in-nl__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.2);
  background: #1d4ed8;
}

/* Dark thesis diagram node hover */
.pg-insights .in-thesis__node {
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.pg-insights .in-thesis__node:hover {
  transform: scale(1.08);
}

/* Featured visual panel hover */
.pg-insights .in-featured__visual {
  transition: box-shadow 0.3s ease;
}
.pg-insights .in-featured__visual:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}

@media (prefers-reduced-motion: reduce) {
  .pg-insights .in-hero__eyebrow, .pg-insights .in-hero__h1 {
    animation: none !important;
  }
}