/* ==========================================================================
   assets/css/blog.css
   Blog listing (blog.php) and article (blog-post.php), in the homepage
   design. Loaded after home.css. Prefix "icb-".
   ========================================================================== */

/* ---- Hero ---- */
.icb-hero { padding-bottom: 40px; }
.icb-hero--post .icb-hero__inner { max-width: 860px; } /* article: same width as the text column */
.icb-hero .ic-hero__title { font-size: clamp(2rem, 1.3rem + 2.6vw, 3.2rem); }
.icb-hero .ic-hero__lead { max-width: 40em; }
.icb-hero--post .icb-post-title { font-size: clamp(1.8rem, 1.2rem + 2.2vw, 2.9rem); line-height: 1.15; letter-spacing: -0.03em; color: var(--ic-navy); text-wrap: balance; }
.icb-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 18px; font: 600 13.5px/1.3 var(--ic-font-body); color: var(--ic-muted); }
.icb-crumbs a { color: var(--ic-blue-600); text-decoration: none; }
.icb-crumbs a:hover { text-decoration: underline; text-underline-offset: 3px; }
.icb-crumbs span { color: var(--ic-line-strong, #C5D0E6); }

/* ---- Meta line + tag ---- */
.icb-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; font: 600 13px/1.3 var(--ic-font-body); color: var(--ic-muted); }
.icb-meta--plain span + span::before { content: "\00B7"; margin-right: 12px; color: var(--ic-muted); }
.icb-meta--hero { margin-top: 18px; font-size: 14px; }
.icb-tag {
  display: inline-block;
  padding: 5px 11px;
  border-radius: 999px;
  font: 700 12px/1.2 var(--ic-font-body);
  letter-spacing: 0.02em;
  color: var(--ic-blue-700);
  background: var(--ic-blue-50);
  border: 1px solid var(--ic-blue-100);
}

/* ---- Generated covers ---- */
.icb-cover {
  --c1: #EAF1FF; --c2: #CFE0FF; --fg: #1F5FE0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  width: 100%;
  height: 100%;
  min-height: 170px;
  background: linear-gradient(135deg, var(--c1), var(--c2));
}
.icb-cover::before, .icb-cover::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid color-mix(in srgb, var(--fg) 18%, transparent);
  pointer-events: none;
}
.icb-cover::before { width: 74%; aspect-ratio: 1; right: -22%; top: -42%; }
.icb-cover::after  { width: 52%; aspect-ratio: 1; left: -14%; bottom: -34%; background: color-mix(in srgb, var(--fg) 8%, transparent); }
.icb-cover__icon {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 22px;
  color: var(--fg);
  background: #fff;
  box-shadow: 0 18px 34px -16px color-mix(in srgb, var(--fg) 55%, transparent), 0 0 0 1px rgba(255, 255, 255, 0.7);
}
.icb-cover__icon .ai-icon { width: 36px; height: 36px; }
.icb-cover--blue   { --c1: #EAF1FF; --c2: #C9DCFF; --fg: #1F5FE0; }
.icb-cover--indigo { --c1: #ECEEFF; --c2: #D3D6FF; --fg: #4F46E5; }
.icb-cover--orange { --c1: #FFEDDF; --c2: #FFD3B3; --fg: #EA580C; }
.icb-cover--rose   { --c1: #FFECEF; --c2: #FFCFD8; --fg: #E11D48; }
.icb-cover--violet { --c1: #F1ECFF; --c2: #DACDFF; --fg: #7C3AED; }
.icb-cover--green  { --c1: #E5F6EC; --c2: #BFE8CF; --fg: #15803D; }
.icb-cover--cyan   { --c1: #E2F6FB; --c2: #B8E8F3; --fg: #0890B2; }
.icb-cover--amber  { --c1: #FFF3DC; --c2: #FFE0A8; --fg: #D97706; }
.icb-cover--teal   { --c1: #DFF4F1; --c2: #B5E6DF; --fg: #0D8A7E; }

/* ---- Listing ---- */
.icb-list { padding: 8px 0 72px; }
.icb-filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.icb-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  font: 600 14px/1.2 var(--ic-font-body);
  color: var(--ic-text);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--ic-line);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.icb-chip span { padding: 2px 8px; border-radius: 999px; font-size: 12px; background: var(--ic-bg-soft); color: var(--ic-muted); }
.icb-chip:hover { color: var(--ic-blue-700); border-color: var(--ic-blue-200); }
.icb-chip.is-active { color: #fff; background: var(--ic-blue-600); border-color: var(--ic-blue-600); }
.icb-chip.is-active span { color: var(--ic-blue-700); background: #fff; }


/* Cards */
.icb-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.icb-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--ic-r-lg);
  background: #fff;
  border: 1px solid var(--ic-line);
  box-shadow: var(--ic-sh-sm);
  transition: transform 0.25s var(--ic-ease), box-shadow 0.25s var(--ic-ease);
}
.icb-card:hover { transform: translateY(-4px); box-shadow: var(--ic-sh-md); }
.icb-card__media { display: block; overflow: hidden; aspect-ratio: 16 / 9; background: var(--ic-bg-soft); }
.icb-photo { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ic-ease); }
.icb-card:hover .icb-photo { transform: scale(1.04); }
@media (prefers-reduced-motion: reduce) { .icb-photo { transition: none; } .icb-card:hover .icb-photo { transform: none; } }
.icb-card__body { display: flex; flex-direction: column; flex: 1; gap: 12px; padding: 22px 22px 20px; }
.icb-card h3 { font: 800 19px/1.3 var(--ic-font-display); letter-spacing: -0.015em; color: var(--ic-navy); }
.icb-card h3 a { color: inherit; text-decoration: none; }
.icb-card h3 a:hover { color: var(--ic-blue-600); }
.icb-card__excerpt { font-size: 14.5px; line-height: 1.65; color: var(--ic-text); }
.icb-card__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--ic-line-soft); font: 500 13px/1.3 var(--ic-font-body); color: var(--ic-muted); }
.icb-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--ic-blue-600); text-decoration: none; white-space: nowrap; }
.icb-more .ai-icon { width: 14px; height: 14px; transition: transform 0.2s var(--ic-ease); }
.icb-more:hover .ai-icon { transform: translateX(3px); }
.icb-empty { padding: 40px 0; text-align: center; font-size: 16px; color: var(--ic-muted); }
.icb-empty a { color: var(--ic-blue-600); font-weight: 600; }

/* ---- Article ---- */
.icb-article-wrap { padding: 0 0 56px; }
/* Single centred column, lined up with the title above it */
.icb-layout { max-width: 860px; margin: 0 auto; }
.icb-article {
  padding: 36px 44px 32px;
  border-radius: var(--ic-r-xl);
  background: #fff;
  border: 1px solid var(--ic-line);
  box-shadow: var(--ic-sh-md);
  font-size: 17px;
  line-height: 1.8;
  color: var(--ic-text);
}
.icb-article > p:first-of-type { font-size: 18.5px; line-height: 1.75; color: var(--ic-ink); }
.icb-article p + p, .icb-article p + ul, .icb-article p + ol, .icb-article ul + p, .icb-article ol + p, .icb-article blockquote + p, .icb-article p + blockquote { margin-top: 16px; }
.icb-article h2 {
  margin: 38px 0 12px;
  font: 800 clamp(1.3rem, 1.1rem + 0.7vw, 1.65rem)/1.3 var(--ic-font-display);
  letter-spacing: -0.02em;
  color: var(--ic-navy);
  scroll-margin-top: calc(var(--ic-nav-space) + 20px);
}
.icb-article ul, .icb-article ol { display: grid; gap: 10px; margin: 16px 0 0; padding: 0; list-style: none; }
.icb-article ul li { position: relative; padding-left: 26px; }
.icb-article ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.78em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ic-blue-500), var(--ic-cyan));
}
.icb-article ol { counter-reset: icb-ol; }
.icb-article ol li { position: relative; padding-left: 34px; counter-increment: icb-ol; }
.icb-article ol li::before {
  content: counter(icb-ol);
  position: absolute;
  left: 0;
  top: 0.3em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font: 700 12.5px/1 var(--ic-font-body);
  color: var(--ic-blue-700);
  background: var(--ic-blue-50);
  border: 1px solid var(--ic-blue-100);
}
/* Article photo: bleeds to the card edges at the top */
.icb-figure { margin: -36px -44px 30px; overflow: hidden; border-radius: var(--ic-r-xl) var(--ic-r-xl) 0 0; background: var(--ic-bg-soft); }
.icb-figure img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.icb-article strong { color: var(--ic-ink); }
.icb-article blockquote {
  margin: 22px 0 0;
  padding: 16px 20px 16px 22px;
  border-left: 4px solid var(--ic-blue-500);
  border-radius: 0 var(--ic-r-md) var(--ic-r-md) 0;
  background: var(--ic-blue-50);
}
.icb-article blockquote p { font: 600 17px/1.65 var(--ic-font-body); color: var(--ic-navy); }

.icb-end { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--ic-line); }
.icb-end__label { font: 700 12px/1 var(--ic-font-body); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ic-muted); }
.icb-share { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; }
.icb-share__btn {
  padding: 10px 18px;
  border-radius: 999px;
  font: 600 14px/1.2 var(--ic-font-body);
  color: var(--ic-blue-700);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--ic-blue-200);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.icb-share__btn:hover { background: var(--ic-blue-50); border-color: var(--ic-blue-500); }
.icb-share__ok { font: 600 13.5px/1.3 var(--ic-font-body); color: var(--ic-green); overflow-wrap: anywhere; }


.icb-related { padding-top: 24px; padding-bottom: 72px; }
.icb-related .ic-section-head { margin-bottom: 32px; }

/* ---- Responsive ---- */
@media (max-width: 1100px) {
  .icb-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .icb-article { padding: 26px 22px 24px; font-size: 16.5px; }
  .icb-figure { margin: -26px -22px 24px; }
}
@media (max-width: 640px) {
  .icb-grid { grid-template-columns: minmax(0, 1fr); }
  .icb-filters { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; margin-right: calc(-1 * var(--ic-gutter)); padding-right: var(--ic-gutter); scrollbar-width: none; }
  .icb-filters::-webkit-scrollbar { display: none; }
  .icb-chip { flex: none; }
}
@media (max-width: 640px) {
  .icb-meta--plain span + span::before { display: none; }
  .icb-meta--plain { gap: 4px 16px; }
  .icb-article > p:first-of-type { font-size: 17px; }
}

/* ---- Sub-headings, table and end-of-article call-to-action ---- */
.icb-article h3 {
  margin: 26px 0 8px;
  font: 700 clamp(1.05rem, 1rem + 0.3vw, 1.2rem)/1.35 var(--ic-font-display);
  letter-spacing: -0.01em;
  color: var(--ic-navy);
}
.icb-article h2 + h3 { margin-top: 18px; }
.icb-article ol li:last-child, .icb-article ul li:last-child { margin-bottom: 0; }

.icb-table-wrap { margin: 20px 0 0; overflow-x: auto; border: 1px solid var(--ic-line); border-radius: var(--ic-r-md); -webkit-overflow-scrolling: touch; }
.icb-table { width: 100%; min-width: 460px; border-collapse: collapse; font-size: 15.5px; line-height: 1.55; }
.icb-table th, .icb-table td { padding: 13px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--ic-line-soft); }
.icb-table thead th { font: 700 13px/1.3 var(--ic-font-body); letter-spacing: 0.04em; text-transform: uppercase; color: var(--ic-blue-700); background: var(--ic-blue-50); border-bottom: 1px solid var(--ic-blue-100); }
.icb-table tbody th { width: 34%; font-weight: 700; color: var(--ic-navy); background: var(--ic-bg-soft); }
.icb-table tbody tr:last-child th, .icb-table tbody tr:last-child td { border-bottom: 0; }
.icb-article .icb-table-wrap + p, .icb-article p + .icb-table-wrap { margin-top: 20px; }

.icb-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px 28px;
  margin-top: 40px;
  padding: 24px 28px;
  border-radius: var(--ic-r-lg);
  background: linear-gradient(135deg, #EEF4FF 0%, #E4F1FD 100%);
  border: 1px solid var(--ic-blue-100);
}
.icb-cta__title { font: 800 20px/1.3 var(--ic-font-display); letter-spacing: -0.02em; color: var(--ic-navy); }
.icb-cta__text { margin-top: 4px; font-size: 15.5px; line-height: 1.55; color: var(--ic-text); max-width: 34em; }
.icb-cta__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.icb-cta__link { font: 700 15px/1 var(--ic-font-body); color: var(--ic-blue-700); text-decoration: none; }
.icb-cta__link:hover { text-decoration: underline; }
@media (max-width: 640px) {
  .icb-cta { padding: 20px; text-align: center; }
  .icb-cta__text { margin-left: auto; margin-right: auto; }
  .icb-cta__actions { flex-direction: column; justify-content: center; width: 100%; }
  .icb-cta__actions .ic-btn { width: 100%; }
  .icb-table { min-width: 0; font-size: 15px; }
  .icb-table th, .icb-table td { padding: 11px 12px; }
  .icb-table tbody th { width: 40%; }
}

/* Previous / next article */
.icb-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.icb-pn__link {
  display: flex; flex-direction: column; gap: 6px; padding: 16px 18px;
  border: 1px solid var(--ic-line); border-radius: 14px; background: #fff;
  text-decoration: none; transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.icb-pn__link:hover { border-color: var(--ic-blue-700); box-shadow: 0 8px 24px rgba(20, 50, 110, 0.1); transform: translateY(-2px); }
.icb-pn__link--next { grid-column: 2; text-align: right; }
.icb-pn__link--prev { grid-column: 1; }
.icb-pn__label { font: 700 12px/1 var(--ic-font-body); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ic-blue-700); }
.icb-pn__title { font: 700 16px/1.4 var(--ic-font-display); color: var(--ic-navy); }
@media (max-width: 600px) {
  .icb-pn { grid-template-columns: 1fr; }
  .icb-pn__link--next, .icb-pn__link--prev { grid-column: 1; text-align: left; }
}

/* Previous / next: stronger emphasis */
.icb-pn { margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--ic-line); }
.icb-pn__link {
  position: relative; padding: 20px 22px; gap: 8px;
  border: 1.5px solid #cfe0fb; border-radius: 16px;
  background: linear-gradient(135deg, #f3f7ff 0%, #e6efff 100%);
  box-shadow: 0 6px 18px rgba(30, 90, 220, 0.10);
}
.icb-pn__link:hover {
  border-color: var(--ic-blue-700);
  background: linear-gradient(135deg, #2f6df0 0%, #1d4fd8 100%);
  box-shadow: 0 14px 30px rgba(30, 90, 220, 0.28);
}
.icb-pn__label {
  display: inline-flex; align-items: center; align-self: flex-start;
  padding: 6px 12px; border-radius: 999px;
  background: var(--ic-blue-700); color: #fff; font-size: 12px;
}
.icb-pn__link--next .icb-pn__label { align-self: flex-end; }
.icb-pn__title { font-size: 17px; }
.icb-pn__link:hover .icb-pn__title { color: #fff; }
.icb-pn__link:hover .icb-pn__label { background: #fff; color: var(--ic-blue-700); }
@media (max-width: 600px) { .icb-pn__link--next .icb-pn__label { align-self: flex-start; } }

/* FAQ accordion (native <details>) - numbered, colourful, still compact */
.icb-article h2#frequently-asked-questions { margin-bottom: 16px; counter-reset: icb-faq; }
.icb-faq__item {
  position: relative; margin: 0 0 10px; counter-increment: icb-faq;
  border: 1.5px solid transparent; border-radius: 14px;
  background:
    linear-gradient(#fff, #fff) padding-box,
    linear-gradient(120deg, #dbe7ff, #ffe6d2) border-box;
  box-shadow: 0 2px 10px rgba(30, 60, 130, 0.07);
  transition: box-shadow 0.25s, transform 0.25s;
}
.icb-faq__item:hover { box-shadow: 0 8px 22px rgba(30, 90, 220, 0.16); transform: translateY(-1px); }
.icb-faq__item[open] {
  background:
    linear-gradient(#f7faff, #fff) padding-box,
    linear-gradient(120deg, #2f6df0, #ff8a2b) border-box;
  box-shadow: 0 12px 28px rgba(30, 90, 220, 0.18);
  transform: none;
}
.icb-faq__item summary {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; cursor: pointer; list-style: none;
  font: 700 16px/1.4 var(--ic-font-display); color: var(--ic-navy);
}
.icb-faq__item summary::-webkit-details-marker { display: none; }
.icb-faq__item summary::before {
  content: counter(icb-faq); flex: 0 0 30px; height: 30px; border-radius: 10px;
  display: grid; place-items: center;
  font: 800 14px/1 var(--ic-font-display); color: #fff;
  background: linear-gradient(135deg, #2f6df0, #1d4fd8);
  box-shadow: 0 4px 10px rgba(29, 79, 216, 0.35);
}
.icb-faq__item[open] summary::before { background: linear-gradient(135deg, #ff8a2b, #f06a00); box-shadow: 0 4px 10px rgba(240, 106, 0, 0.35); }
.icb-faq__item summary::after {
  content: ""; margin-left: auto; flex: 0 0 26px; height: 26px; border-radius: 50%;
  background: #eaf1ff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 14 14' fill='none' stroke='%231d4fd8' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M2 5l5 5 5-5'/%3E%3C/svg%3E") center / 12px no-repeat;
  transition: transform 0.25s, background-color 0.2s;
}
.icb-faq__item[open] summary::after { transform: rotate(180deg); background-color: #ffe9d6; }
.icb-faq__item[open] summary { color: var(--ic-blue-700); }
.icb-faq__item summary:focus-visible { outline: 2px solid var(--ic-blue-700); outline-offset: 2px; border-radius: 14px; }
.icb-faq__answer { padding: 0 16px 14px 54px; font-size: 15.5px; line-height: 1.65; }
.icb-faq__answer p { margin: 0 0 8px; font-size: inherit; line-height: inherit; }
.icb-faq__answer > :last-child { margin-bottom: 0; }
@media (max-width: 600px) {
  .icb-faq__item summary { font-size: 15px; }
  .icb-faq__answer { padding-left: 16px; }
}