/* ============================================================
   Horrortainment Quiz — Hub Styles
   ============================================================ */

/* ------------------------------------------------------------
   Page layout
------------------------------------------------------------ */
.page-hub {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#htq-hub {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ------------------------------------------------------------
   Header
------------------------------------------------------------ */
.hub-header {
  background: var(--grey-900);
  border-bottom: 1px solid var(--grey-800);
  position: sticky;
  top: 0;
  z-index: 100;
}

.hub-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.hub-back-link {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-400);
  text-decoration: none;
  transition: color var(--transition);
  white-space: nowrap;
}

.hub-back-link:hover {
  color: var(--white);
}

.hub-brand {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.hub-brand-name {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--white);
  text-transform: uppercase;
}

.hub-brand-quiz {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--red-bright);
  letter-spacing: 0.08em;
  text-shadow: 0 0 12px var(--red-glow);
}

.hub-leaderboard-link {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition);
  white-space: nowrap;
}

.hub-leaderboard-link:hover {
  color: var(--white);
}

/* ------------------------------------------------------------
   Loading
------------------------------------------------------------ */
.hub-loading {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px 20px;
}

/* ------------------------------------------------------------
   Main layout
------------------------------------------------------------ */
#hub-main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 20px 60px;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas:
    "hero"
    "filters"
    "activefilters"
    "admobile"
    "grid"
    "footer";
  gap: 0;
}

/* ------------------------------------------------------------
   Hero
------------------------------------------------------------ */
.hub-hero {
  grid-area: hero;
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--grey-800);
  margin-bottom: 24px;
}

.hero-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background:
    radial-gradient(ellipse at top left, #1a0000 0%, transparent 60%),
    var(--grey-900);
  border: 1px solid var(--grey-700);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  text-decoration: none;
  color: inherit;
}

.hero-card:hover {
  border-color: var(--red);
  box-shadow: 0 0 24px var(--red-glow);
}

.hero-card::before {
  content: "LATEST";
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--red-bright);
  border: 1px solid var(--red);
  padding: 3px 8px;
  border-radius: var(--radius);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 52px);
  line-height: 1.05;
  color: var(--white);
  text-shadow: 0 0 30px var(--red-glow);
}

.hero-description {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--grey-400);
  line-height: 1.6;
  max-width: 600px;
}

.hero-stats {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}

.hero-stat {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--grey-400);
  letter-spacing: 0.05em;
}

.hero-stat strong {
  color: var(--white);
  font-weight: 700;
}

.hero-play-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition:
    background var(--transition),
    box-shadow var(--transition);
  align-self: flex-start;
  text-decoration: none;
  box-shadow: 0 0 20px var(--red-glow);
}

.hero-play-btn:hover {
  background: var(--red-bright);
  box-shadow: 0 0 30px var(--red-glow);
}

.hero-curator {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--grey-600);
  letter-spacing: 0.08em;
}

/* ------------------------------------------------------------
   Filters
------------------------------------------------------------ */
.hub-filters {
  grid-area: filters;
  position: sticky;
  top: 56px;
  background: var(--black);
  z-index: 90;
  padding: 12px 0;
  border-bottom: 1px solid var(--grey-800);
  margin-bottom: 8px;
}

.hub-filters-inner {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.hub-filters-inner::-webkit-scrollbar {
  display: none;
}

.filter-group {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
}

.filter-group--tags {
  flex-wrap: wrap;
  flex-direction: column;
  align-items: flex-start;
}

.filter-category-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.filter-btn {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--grey-700);
  background: var(--grey-900);
  color: var(--grey-400);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.filter-btn:hover {
  border-color: var(--grey-400);
  color: var(--white);
}

.filter-btn--active {
  background: var(--grey-700);
  border-color: var(--grey-400);
  color: var(--white);
}

.filter-btn--easy.filter-btn--active {
  background: rgba(57, 255, 20, 0.1);
  border-color: var(--green);
  color: var(--green);
}

.filter-btn--medium.filter-btn--active {
  background: rgba(255, 149, 0, 0.1);
  border-color: var(--amber);
  color: var(--amber);
}

.filter-btn--hard.filter-btn--active {
  background: rgba(255, 26, 26, 0.1);
  border-color: var(--red-bright);
  color: var(--red-bright);
}

.filter-btn--tag.filter-btn--active {
  background: rgba(204, 0, 0, 0.15);
  border-color: var(--red);
  color: var(--white);
}

/* Active filter chips */
.active-filters {
  grid-area: activefilters;
  padding: 8px 0;
}

.active-filters-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.active-filters-label {
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-400);
}

.active-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(204, 0, 0, 0.15);
  border: 1px solid var(--red);
  border-radius: var(--radius);
  padding: 4px 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--white);
  cursor: pointer;
}

.active-chip:hover {
  background: rgba(204, 0, 0, 0.3);
}

.active-chip-remove {
  color: var(--grey-400);
  font-size: 14px;
  line-height: 1;
}

.btn-clear-filters {
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-400);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  transition: color var(--transition);
}

.btn-clear-filters:hover {
  color: var(--red-bright);
}

/* ------------------------------------------------------------
   Ad slot — mobile hub
------------------------------------------------------------ */
.ad-slot--hub-mobile {
  grid-area: admobile;
  height: 80px;
  margin-bottom: 16px;
  display: none; /* shown via media query */
}

/* ------------------------------------------------------------
   Quiz grid
------------------------------------------------------------ */
.hub-grid-section {
  grid-area: grid;
}

.hub-grid-inner {
  position: relative;
}

.quiz-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

/* Quiz card */
.quiz-card {
  background: var(--grey-900);
  border: 1px solid var(--grey-800);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quiz-card:hover {
  border-color: var(--red);
  box-shadow: 0 0 16px var(--red-glow);
  transform: translateY(-2px);
}

.quiz-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.quiz-card-title {
  font-family: var(--font-display);
  font-size: clamp(20px, 4vw, 28px);
  line-height: 1.1;
  color: var(--white);
}

.quiz-card-description {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--grey-400);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.quiz-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.quiz-card-stats {
  display: flex;
  gap: 16px;
}

.quiz-card-stat {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--grey-400);
  letter-spacing: 0.05em;
}

.quiz-card-stat strong {
  color: var(--grey-200);
}

.quiz-card-curator {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--grey-600);
  letter-spacing: 0.05em;
}

/* ------------------------------------------------------------
   Pagination / Show all
------------------------------------------------------------ */
.hub-pagination {
  display: flex;
  justify-content: center;
  padding: 8px 0 24px;
}

/* ------------------------------------------------------------
   Full list (show all)
------------------------------------------------------------ */
.quiz-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--grey-800);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.quiz-list-item {
  background: var(--grey-900);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: background var(--transition);
}

.quiz-list-item:hover {
  background: var(--grey-800);
}

.quiz-list-title {
  flex: 1;
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
}

.quiz-list-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.quiz-list-stat {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--grey-400);
}

/* ------------------------------------------------------------
   No results
------------------------------------------------------------ */
.hub-no-results {
  padding: 40px 20px;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 16px;
  color: var(--grey-400);
  letter-spacing: 0.05em;
}

/* ------------------------------------------------------------
   Right rail (desktop ad)
------------------------------------------------------------ */
.hub-rail {
  display: none;
}

/* ------------------------------------------------------------
   Footer
------------------------------------------------------------ */
.hub-footer {
  border-top: 1px solid var(--grey-800);
  padding: 24px 20px;
  margin-top: auto;
}

.hub-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.hub-footer-inner p {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--grey-400);
  letter-spacing: 0.05em;
}

.hub-footer-inner a {
  color: var(--red-bright);
  text-decoration: none;
}

.hub-footer-inner a:hover {
  color: var(--white);
}

/* ------------------------------------------------------------
   Desktop
------------------------------------------------------------ */
@media (min-width: 768px) {
  .quiz-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ad-slot--hub-mobile {
    display: flex;
  }
}

@media (min-width: 1024px) {
  #hub-main {
    grid-template-columns: 1fr 300px;
    grid-template-areas:
      "hero     rail"
      "filters  rail"
      "activefilters rail"
      "admobile rail"
      "grid     rail";
    gap: 0 32px;
    align-items: start;
  }

  .hub-rail {
    grid-area: rail;
    display: block;
    position: sticky;
    top: 80px;
  }

  .ad-slot--rail {
    height: 600px;
  }

  .ad-slot--hub-mobile {
    display: none;
  }

  .quiz-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hub-filters {
    top: 56px;
  }
}

.filter-category-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--grey-400);
  white-space: nowrap;
  padding: 6px 4px 6px 0;
}