/* ============================================================
   AQUILA360 — BLOG LISTING ("Insights")
   Extends the Operations Deck system (redesign.css). Self-contained
   so the legacy blog.css (still used by blog-post.html) is untouched.
   Class names match those rendered by js/blog.js.
   ============================================================ */

/* ---- Hero search + metrics --------------------------------------- */
.blog-search {
  display: flex;
  gap: 10px;
  max-width: 540px;
  margin-top: 34px;
}
.blog-search input {
  flex: 1;
  font: inherit;
  font-size: 15px;
  color: var(--on-dark);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease),
    background 0.2s var(--ease);
}
.blog-search input::placeholder {
  color: var(--on-dark-mute);
}
.blog-search input:focus {
  outline: none;
  border-color: var(--teal);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(25, 211, 181, 0.15);
}

.blog-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--line-dark);
}
.blog-metric strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  background: var(--grad-spire);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.blog-metric span {
  display: block;
  margin-top: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-dark-mute);
}

/* ---- Hero topics panel (deck body) ------------------------------- */
.topics {
  display: flex;
  flex-direction: column;
}
.topic {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line-dark-soft);
}
.topic:last-child {
  border-bottom: 0;
}
.topic__code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--sky);
}
.topic__name {
  font-family: "Space Grotesk", sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
}
.topic__count {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  color: var(--on-dark-mute);
}

/* ---- Category filter bar ----------------------------------------- */
.blog-filters {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 75px;
  z-index: 40;
}
.blog-filters .shell {
  padding-block: 22px;
}
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.filter-tab {
  font-family: "IBM Plex Sans", sans-serif;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text-soft);
  border-radius: 40px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
    background 0.2s var(--ease);
}
.filter-tab:hover {
  border-color: var(--teal);
  color: var(--text);
}
.filter-tab.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.filter-count {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  color: var(--muted);
}
.filter-tab.active .filter-count {
  color: var(--teal);
}

/* ---- Listing ----------------------------------------------------- */
.results-summary {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 26px;
}
.results-summary strong {
  color: var(--text);
  font-weight: 600;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 980px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Card -------------------------------------------------------- */
.blog-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    border-color 0.25s var(--ease);
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: var(--teal);
}

.blog-card-thumb {
  height: 180px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--ink-2), var(--ink-3));
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--line);
}
.blog-card-thumb .card-banner-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}
.blog-card-thumb .thumb-icon {
  color: var(--on-dark-mute);
  opacity: 0.5;
}
.blog-card-thumb .thumb-icon svg {
  width: 44px;
  height: 44px;
}
.category-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(10, 19, 38, 0.72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(25, 211, 181, 0.3);
  border-radius: 40px;
  padding: 4px 11px;
}

.blog-card-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--muted);
  margin-bottom: 14px;
}
.blog-card-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--muted);
  flex: none;
}
.blog-card-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 12px;
}
.blog-card-excerpt {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--line-2);
}
.read-more-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--teal-deep);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s var(--ease);
}
.blog-card:hover .read-more-link {
  gap: 10px;
}
.read-time-badge {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  color: var(--muted);
}

/* ---- Pagination -------------------------------------------------- */
.blog-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding-top: 48px;
}
.page-btn {
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
    background 0.2s var(--ease);
}
.page-btn:hover:not(.disabled) {
  border-color: var(--teal);
  color: var(--text);
}
.page-btn.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.page-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---- Empty / loading states -------------------------------------- */
.no-results {
  display: none;
  text-align: center;
  padding: 80px 20px;
  color: var(--muted);
}
.no-results.visible {
  display: block;
}
.no-results svg {
  width: 46px;
  height: 46px;
  color: var(--muted);
  opacity: 0.5;
  margin: 0 auto 18px;
}
.no-results h3 {
  font-size: 22px;
  margin-bottom: 10px;
}
#blog-loading {
  text-align: center;
  padding: 80px 20px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.loading-spinner {
  width: 38px;
  height: 38px;
  border: 2px solid var(--line);
  border-top-color: var(--teal);
  border-radius: 50%;
  animation: blog-spin 0.7s linear infinite;
  margin: 0 auto 16px;
}
@keyframes blog-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---- CTA band (shared shape with portfolio) ---------------------- */
.cta {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}
.cta h2 {
  color: #fff;
  font-size: clamp(30px, 4.4vw, 50px);
  margin-top: 18px;
}
.cta p {
  margin: 18px auto 36px;
  color: var(--on-dark-soft);
  font-size: 18px;
  max-width: 56ch;
}
.cta__btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .blog-filters {
    position: static;
  }
}