/* ============================================================
   TopTier Insights — main stylesheet
   ============================================================ */

:root {
  --color-bg: #f7f8fb;
  --color-surface: #ffffff;
  --color-text: #1a1d29;
  --color-text-muted: #5b6072;
  --color-border: #e6e8ee;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-accent: #7c3aed;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 20px 48px rgba(16, 24, 40, 0.12);
  --max-width: 1200px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
.visually-hidden { position: absolute; left: -9999px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1.5px solid var(--color-border); color: var(--color-text); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ---------- Header ---------- */
#site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary);
  white-space: nowrap;
}
.brand i { font-size: 1.4rem; }
.main-nav {
  display: flex;
  gap: 20px;
  flex: 1;
}
.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}
.main-nav a:hover, .main-nav a.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

/* ---------- Nav item wrapper + Mega-menu (Categories) ---------- */
.nav-item.has-mega { position: relative; display: flex; align-items: center; }
.mega-toggle {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 8px 2px 8px 6px;
  font-size: 0.7rem;
  line-height: 1;
  transition: color 0.2s, transform 0.2s;
}
.nav-item.has-mega:hover .mega-toggle,
.nav-item.has-mega.open .mega-toggle { color: var(--color-primary); }
.nav-item.has-mega.open .mega-toggle i { transform: rotate(180deg); }
.mega-menu {
  /* Hidden via opacity + pointer-events (NOT display:none / visibility:hidden)
     so links stay reachable by keyboard Tab navigation. A display:none panel
     can never receive focus, which permanently traps its links out of the tab
     order and makes :focus-within impossible to trigger — effectively turning
     real, indexable nav links into elements a keyboard-only user can never
     reach. Opacity + pointer-events keeps the panel out of sight and out of
     the mouse hit-test area while it's closed, but lets Tab walk into it and
     reveal it via :focus-within, exactly like the hover reveal. */
  position: absolute;
  top: 100%;
  left: -20px;
  margin-top: 8px;
  width: 620px;
  max-width: calc(100vw - 40px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 26px 28px;
  z-index: 250;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}
.nav-item.has-mega:hover .mega-menu,
.nav-item.has-mega.open .mega-menu,
.mega-menu:focus-within {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.mega-menu__heading {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}
.mega-menu__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 22px; }
.mega-menu__cat {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}
.mega-menu__cat:hover { background: var(--color-bg); }
.mega-menu__cat-icon {
  flex: 0 0 40px; width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 1.05rem;
}
.mega-menu__cat-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.mega-menu__cat-text strong { font-size: 0.9rem; color: var(--color-text); }
.mega-menu__cat-text em { font-style: normal; font-size: 0.75rem; color: var(--color-text-muted); }
.mega-menu__section--tags { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--color-border); }
.mega-menu__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.mega-menu__tag-chip { padding: 6px 12px; font-size: 0.8rem; }
.mega-menu__footer {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--color-border);
}
.mega-menu__footer a { font-size: 0.85rem; font-weight: 700; color: var(--color-primary); }
.mega-menu__cat--skeleton { pointer-events: none; }
.mega-menu__cat--skeleton .mega-menu__cat-text { flex: 1; }

.header-search {
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 6px 6px 16px;
  min-width: 220px;
}
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.9rem;
  flex: 1;
  color: var(--color-text);
}
.header-search button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 860px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 12px 20px 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: 4px;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    z-index: 150;
  }
  .main-nav.open { display: flex; }
  .main-nav > a { padding: 12px 4px; border-bottom: 1px solid var(--color-border); }
  .main-nav > a:last-of-type { border-bottom: none; }
  .main-nav .mobile-nav-search { display: flex; order: -1; margin-bottom: 8px; }
  .header-search { display: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-left: auto; }
  .header-inner { position: relative; }

  /* Mega-menu collapses into an inline accordion under "Categories" on mobile */
  .nav-item.has-mega {
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
  }
  .nav-item.has-mega > a { flex: 1; padding: 12px 4px; border-bottom: none; }
  .mega-toggle { flex: 0 0 auto; padding: 12px 8px; }
  .mega-menu {
    display: none;
    position: static;
    width: 100%;
    max-width: none;
    margin: 0 0 10px;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 4px 4px 14px;
  }
  .nav-item.has-mega:hover .mega-menu { display: none; }
  .nav-item.has-mega.open .mega-menu { display: block; }
  .mega-menu__grid { grid-template-columns: 1fr; }
}

/* Mobile in-menu search (only rendered inside the hamburger dropdown below 860px) */
.mobile-nav-search {
  display: none;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 4px 4px 14px;
}
.mobile-nav-search input { border: none; background: transparent; outline: none; font-size: 0.9rem; flex: 1; color: var(--color-text); min-width: 0; }
.mobile-nav-search button { background: var(--color-primary); color: #fff; border: none; border-radius: 50%; width: 34px; height: 34px; flex: 0 0 34px; cursor: pointer; }

/* ---------- Header / Footer boot skeleton ----------
   Static markup rendered inside <header>/<footer> in the raw HTML so visitors
   see a lightweight placeholder immediately on first paint, before the JS
   bundle (marked.js, ContentStore, layout.js, etc.) has finished downloading
   and executing. renderLayout() overwrites this markup with the real header
   and footer as soon as it runs, and reruns after ContentStore.init() with
   live data — this is just the "before either of those has happened yet" state. */
.header-skeleton-nav { display: flex; align-items: center; gap: 20px; flex: 1; }
.header-skeleton-nav .skeleton--line { margin: 0; height: 16px; }
.header-skeleton-search { display: block; width: 220px; height: 36px; border-radius: 999px; flex-shrink: 0; }
.header-skeleton-toggle { display: none; width: 44px; height: 44px; border-radius: 8px; margin-left: auto; }
@media (max-width: 860px) {
  .header-skeleton-nav, .header-skeleton-search { display: none; }
  .header-skeleton-toggle { display: block; }
}
.footer-inner--skeleton { align-items: start; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  color: #fff;
  padding: 64px 0 56px;
  text-align: center;
}
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 0.4em; }
.hero p { font-size: 1.1rem; opacity: 0.92; max-width: 640px; margin: 0 auto 28px; }
.hero-search {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  background: #fff;
  border-radius: 999px;
  padding: 6px 6px 6px 22px;
  box-shadow: var(--shadow-lg);
}
.hero-search input { flex: 1; border: none; outline: none; font-size: 1rem; color: var(--color-text); min-width: 0; }
.hero-search button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 12px 26px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}
@media (max-width: 420px) {
  .hero-search { padding: 6px 6px 6px 16px; }
  .hero-search button { padding: 12px 18px; font-size: 0.9rem; }
}

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-header h2 { font-size: 1.75rem; font-weight: 800; }
.section-header p.subtitle { color: var(--color-text-muted); margin: 4px 0 0; }
.section-header a { color: var(--color-primary); font-weight: 600; font-size: 0.95rem; }

/* ---------- Grids & Cards ---------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 980px) { .posts-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .posts-grid { grid-template-columns: 1fr; } }

.post-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.post-card__image-link { position: relative; display: block; aspect-ratio: 16/10; overflow: hidden; }
.post-card__image { width: 100%; height: 100%; object-fit: cover; }
.post-card__category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0,0,0,0.65);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.post-card__body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.post-card__title { font-size: 1.15rem; margin-bottom: 8px; }
.post-card__title a:hover { color: var(--color-primary); }
.post-card__desc { color: var(--color-text-muted); font-size: 0.92rem; flex: 1; }
.post-card__meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  margin-top: 8px;
}
.post-card__meta i { margin-right: 4px; }

/* Skeleton loading */
.skeleton { background: linear-gradient(90deg, #eceef2 25%, #f5f6f9 37%, #eceef2 63%); background-size: 400% 100%; animation: skeleton-loading 1.4s ease infinite; border-radius: 6px; }
.skeleton--image { aspect-ratio: 16/10; border-radius: 0; }
.skeleton--line { height: 12px; margin: 8px 0; }
.skeleton--icon { width: 52px; height: 52px; border-radius: 14px; }
.skeleton--chip { display: inline-block; width: 100px; height: 26px; border-radius: 999px; }
.skeleton--tag-chip { display: inline-block; height: 38px; border-radius: 999px; }
@keyframes skeleton-loading { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* Skeleton state helpers for cards built with real components */
.post-card--skeleton, .featured-card--skeleton, .category-card--skeleton { pointer-events: none; }
.category-card--skeleton { display: flex; flex-direction: column; }
.category-card--skeleton .skeleton--line { margin: 8px 0; }
.category-card--skeleton .category-card__footer { margin-top: auto; }

/* Broken-image fallback (shown instead of a broken-icon when a source 404s) */
.post-card__image-link, .featured-card__image-link {
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
}
img.img-fallback { min-height: 100%; }

/* Featured / hero grid */
.featured-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
}
@media (max-width: 860px) { .featured-grid { grid-template-columns: 1fr; } }
.featured-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.featured-card__image-link { display: block; aspect-ratio: 16/9; overflow: hidden; }
.featured-card__image-link img { width: 100%; height: 100%; object-fit: cover; }
.featured-card__body { padding: 22px; }
.featured-card__category {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.featured-card h3 { font-size: 1.3rem; }
.featured-side { display: flex; flex-direction: column; gap: 20px; }
.featured-side .featured-card { flex-direction: row; }
.featured-side .featured-card__image-link { flex: 0 0 40%; aspect-ratio: auto; }
.featured-side .featured-card__body { flex: 1; padding: 16px; }
.featured-side .featured-card h3 { font-size: 1rem; }
@media (max-width: 640px) { .featured-side .featured-card { flex-direction: column; } .featured-side .featured-card__image-link { flex: none; aspect-ratio: 16/9; } }

/* ---------- Category cards ---------- */
.categories-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 980px) { .categories-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .categories-grid { grid-template-columns: 1fr; } }
.category-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--accent, var(--color-primary));
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: block;
}
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.category-card__icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--accent) 12%, white);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}
.category-card h3 { font-size: 1.15rem; }
.category-card p { color: var(--color-text-muted); font-size: 0.9rem; }
.category-card__footer { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; flex-wrap: wrap; gap: 8px; }
.category-card__count { font-size: 0.82rem; color: var(--color-text-muted); }

/* CPM badges */
.cpm-badge { font-size: 0.72rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.cpm-badge--very-high { background: #fee2e2; color: #b91c1c; }
.cpm-badge--high { background: #fef3c7; color: #92400e; }
.cpm-badge--medium-high { background: #dbeafe; color: #1d4ed8; }
.cpm-badge--medium { background: #e0e7ff; color: #4338ca; }
.cpm-badge--low { background: #f1f5f9; color: #475569; }

/* ---------- Tags ---------- */
.tags-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.tag-chip {
  display: flex; align-items: center; gap: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.tag-chip:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-2px); }

/* ---------- Sidebar layout (category/tag/search/post pages) ---------- */
.content-layout { display: grid; grid-template-columns: 2.2fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 940px) { .content-layout { grid-template-columns: 1fr; } }
.sidebar { display: flex; flex-direction: column; gap: 28px; position: sticky; top: 90px; min-width: 0; }
@media (max-width: 940px) {
  .sidebar { position: static; top: auto; }
}
.sidebar-card { background: var(--color-surface); border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow-sm); }
.sidebar-card h4 { font-size: 1.05rem; margin-bottom: 14px; }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list a { font-size: 0.9rem; font-weight: 600; color: var(--color-text-muted); display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.sidebar-list a:hover { color: var(--color-primary); }
.sidebar-list a span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.sidebar-list a .cpm-badge { flex-shrink: 0; }

/* ---------- Page header banner ---------- */
.page-banner {
  padding: 48px 0 36px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.breadcrumbs { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 12px; }
.breadcrumbs a { color: var(--color-primary); }
.page-banner h1 { font-size: 2rem; font-weight: 800; }
.page-banner p { color: var(--color-text-muted); max-width: 700px; }
.page-banner-icon {
  width: 60px; height: 60px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: #fff; margin-bottom: 16px;
}

/* ---------- Pagination ---------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; flex-wrap: wrap; }
.page-btn {
  min-width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-weight: 600;
}
.page-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-btn:hover:not(:disabled):not(.active) { border-color: var(--color-primary); color: var(--color-primary); }

/* ---------- Empty state ---------- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }
.empty-state i { font-size: 2.4rem; margin-bottom: 12px; display: block; }

/* ---------- Filters bar ---------- */
.filters-bar {
  display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px;
  align-items: center;
}
.filters-bar select, .filters-bar input {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  background: var(--color-surface);
}
.results-count { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 20px; }

/* ---------- Article / Post page ---------- */
.article-header { max-width: 780px; margin: 0 auto 32px; text-align: left; }
.article-category-badge {
  display: inline-block; background: var(--color-primary); color: #fff;
  font-size: 0.75rem; font-weight: 700; padding: 5px 12px; border-radius: 999px;
  text-transform: uppercase; margin-bottom: 14px;
}
.article-header h1 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; margin-bottom: 16px; }
.article-meta { display: flex; gap: 20px; flex-wrap: wrap; color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 24px; }
.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-cover { width: 100%; border-radius: var(--radius-lg); aspect-ratio: 16/8; object-fit: cover; margin-bottom: 8px; }

.article-body {
  max-width: 780px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: #262a38;
}
.article-body h2 { font-size: 1.5rem; margin-top: 2em; font-weight: 800; }
.article-body h3 { font-size: 1.2rem; margin-top: 1.6em; font-weight: 700; }
.article-body p { margin-bottom: 1.2em; }
.article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.4em; }
.article-body li { margin-bottom: 0.5em; }
.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: #eef2ff;
  padding: 14px 20px;
  border-radius: 0 8px 8px 0;
  margin: 1.6em 0;
  color: #333;
}
.article-body code { background: #eef0f4; padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }
.article-body pre { background: #1a1d29; color: #f4f4f5; padding: 16px; border-radius: 10px; overflow-x: auto; margin-bottom: 1.4em; }
.article-body pre code { background: none; padding: 0; color: inherit; }
.article-body img { border-radius: var(--radius-md); margin: 1.4em 0; }
.article-body table { width: 100%; border-collapse: collapse; margin-bottom: 1.6em; }
.article-body th, .article-body td { border: 1px solid var(--color-border); padding: 10px 12px; text-align: left; font-size: 0.92rem; }
.article-body th { background: #f2f4f8; }
.article-body a { color: var(--color-primary); text-decoration: underline; }
.article-body hr { border: none; border-top: 1px solid var(--color-border); margin: 2em 0; }

.article-tags { max-width: 780px; margin: 32px auto 0; display: flex; gap: 10px; flex-wrap: wrap; }
.article-tags a {
  font-size: 0.82rem; font-weight: 600; background: var(--color-bg);
  border: 1px solid var(--color-border); border-radius: 999px; padding: 6px 14px;
}
.article-tags a:hover { border-color: var(--color-primary); color: var(--color-primary); }

.related-posts { max-width: 780px; margin: 48px auto 0; }
.related-posts h3 { font-size: 1.3rem; margin-bottom: 20px; }

.in-content-ad { max-width: 780px; margin: 2.4em auto; }

/* ---------- Ads ---------- */
.ad-unit { text-align: center; }
.ad-unit__label {
  display: block; font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-text-muted); margin-bottom: 8px; font-weight: 700;
}
.ad-placeholder {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; color: var(--color-text-muted);
  background: repeating-linear-gradient(45deg, #f4f5f8 0 10px, #eef0f4 10px 20px);
  width: 100%;
  font-size: 0.85rem;
  font-weight: 600;
}
.ad-placeholder i { font-size: 1.6rem; opacity: 0.6; }
.ad-placeholder--leaderboard { min-height: 90px; }
.ad-placeholder--rectangle { min-height: 250px; }
.ad-placeholder--inContent { min-height: 200px; }
.ad-placeholder--sidebar { min-height: 300px; }
.ad-slot-top { padding: 20px 0; background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.ad-slot-bottom { padding: 32px 0; }

/* ---------- Footer ---------- */
#site-footer { background: #12141c; color: #c6c9d4; margin-top: 40px; }
.footer-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 56px 20px 28px;
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px;
}
@media (max-width: 780px) { .footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-inner { grid-template-columns: 1fr; } }
#site-footer .brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 0.88rem; color: #9297a8; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 0.88rem; color: #9297a8; margin-bottom: 10px; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 18px 20px; text-align: center; font-size: 0.82rem; color: #767b8c;
}

/* ---------- Static legal pages ---------- */
.static-page { max-width: 780px; margin: 0 auto; padding: 48px 0 80px; }
.static-page h1 { font-size: 2rem; margin-bottom: 0.6em; }
.static-page h2 { font-size: 1.3rem; margin-top: 1.6em; }
.static-page p, .static-page li { color: var(--color-text-muted); }

/* ---------- Social Share ---------- */
.share-inline { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 20px 0; }
.share-label { font-weight: 700; font-size: 0.85rem; color: var(--color-text-muted); }
.share-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.share-btn {
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg); border: 1px solid var(--color-border);
  color: var(--color-text); cursor: pointer; font-size: 0.95rem;
  transition: all 0.2s;
}
.share-btn:hover { transform: translateY(-2px); color: #fff; border-color: transparent; }
.share-fb:hover { background: #1877f2; }
.share-x:hover { background: #000; }
.share-li:hover { background: #0a66c2; }
.share-wa:hover { background: #25d366; }
.share-pin:hover { background: #e60023; }
.share-copy.copied { background: #059669; color: #fff; border-color: transparent; }

/* ---------- Reading progress bar ---------- */
#reading-progress-bar {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 999; transition: width 0.1s ease-out;
}

/* ---------- Scroll to top ---------- */
#scroll-to-top-btn {
  position: fixed; bottom: 24px; right: 24px; width: 46px; height: 46px;
  border-radius: 50%; background: var(--color-primary); color: #fff; border: none;
  font-size: 1.1rem; cursor: pointer; box-shadow: var(--shadow-md);
  opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: all 0.25s ease; z-index: 200;
}
#scroll-to-top-btn.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
#scroll-to-top-btn:hover { background: var(--color-primary-dark); }

/* ---------- Table of Contents ---------- */
.toc-list { display: flex; flex-direction: column; gap: 8px; }
.toc-link { font-size: 0.85rem; color: var(--color-text-muted); font-weight: 600; padding: 4px 0; border-left: 2px solid transparent; padding-left: 10px; }
.toc-link:hover { color: var(--color-primary); border-left-color: var(--color-primary); }
.toc-level-3 { padding-left: 22px; font-weight: 500; font-size: 0.8rem; }

/* ---------- Trending list ---------- */
.trending-item { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--color-border); }
.trending-item:last-child { border-bottom: none; }
.trending-rank {
  flex: 0 0 26px; height: 26px; border-radius: 50%; background: var(--color-bg);
  color: var(--color-primary); font-weight: 800; font-size: 0.78rem;
  display: flex; align-items: center; justify-content: center;
}
.trending-title { font-size: 0.86rem; font-weight: 600; color: var(--color-text); }
.trending-item:hover .trending-title { color: var(--color-primary); }

/* ---------- Newsletter ---------- */
.newsletter-box {
  background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
  text-align: center;
}
.newsletter-box h3 { font-size: 1.5rem; margin-bottom: 8px; }
.newsletter-box p { opacity: 0.92; max-width: 520px; margin: 0 auto 22px; }
.newsletter-form { display: flex; max-width: 460px; margin: 0 auto; background: #fff; border-radius: 999px; padding: 6px 6px 6px 20px; gap: 8px; }
.newsletter-form input { flex: 1; border: none; outline: none; font-size: 0.95rem; min-width: 0; }
.newsletter-form button { background: #111827; color: #fff; border: none; border-radius: 999px; padding: 12px 22px; font-weight: 700; cursor: pointer; white-space: nowrap; flex-shrink: 0; }
.newsletter-success { display: none; align-items: center; justify-content: center; gap: 8px; margin-top: 14px; font-weight: 600; color: #d1fae5; }
.newsletter-box.compact { padding: 26px; text-align: left; }
.newsletter-box.compact .newsletter-form { margin: 0; }
@media (max-width: 480px) {
  .newsletter-box { padding: 26px 20px; }
  .newsletter-form { flex-direction: column; background: transparent; padding: 0; gap: 10px; }
  .newsletter-form input { background: #fff; border-radius: 999px; padding: 12px 18px; }
  .newsletter-form button { width: 100%; }
  .newsletter-box.compact { display: block !important; text-align: center; }
  .newsletter-box.compact > div:first-child { text-align: center; margin-bottom: 16px; }
}

/* ---------- Footer newsletter placement ---------- */
.footer-newsletter { grid-column: 1 / -1; margin-bottom: 12px; }

/* Utility spacing */
.mt-0 { margin-top: 0 !important; }