/* Site-specific refinements; loaded after the Chirpy theme. */

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

:focus-visible {
  outline: 3px solid var(--link-color) !important;
  outline-offset: 4px;
}

#sidebar-trigger,
#search-trigger,
#mode-toggle {
  min-width: 44px;
  min-height: 44px;
}

#mask {
  background: rgb(0 0 0 / 45%);
  backdrop-filter: blur(2px);
}

.post-meta {
  font-size: 0.875rem;
  line-height: 1.65;
}

#post-list .card-text p {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.home-intro {
  padding: 1.25rem 0 2rem;
  border-bottom: 1px solid var(--main-border-color);
  margin-bottom: 2rem;
}

.home-intro h1 {
  color: var(--heading-color);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.3;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

.home-welcome {
  color: var(--text-muted-color);
  font-size: 1.05rem;
  line-height: 1.8;
}

.home-welcome p {
  margin: 0 0 1rem;
}

.home-all-posts {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  font-weight: 600;
}

.home-section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.home-section-heading h2 {
  color: var(--heading-color);
  font-size: 1.5rem;
  margin: 0;
}

.home-section-heading a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.home-latest #post-list .card-wrapper {
  margin-bottom: 1.25rem;
}

.home-topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.home-topics {
  padding: 2rem 0 1rem;
}

.home-topic-card {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-height: 112px;
  padding: 1.25rem;
  color: var(--text-color);
  background: var(--card-bg);
  border: 1px solid var(--main-border-color);
  border-radius: 0.75rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.home-topic-card:hover {
  color: var(--link-color);
  border-color: var(--link-color);
  transform: translateY(-2px);
}

.home-topic-card > i:first-child {
  font-size: 1.4rem;
  color: var(--link-color);
}

.home-topic-card > i:last-child {
  margin-left: auto;
}

.home-topic-card span {
  min-width: 0;
}

.home-topic-card strong,
.home-topic-card small {
  display: block;
}

.home-topic-card strong {
  color: var(--heading-color);
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.home-topic-card small {
  color: var(--text-muted-color);
  font-size: 0.85rem;
  line-height: 1.6;
}

.content .prompt-tip,
.content .prompt-info,
.content .prompt-warning,
.content .prompt-danger {
  padding: 1rem 1.25rem;
}

@media (max-width: 991px) {
  .home-topic-grid {
    grid-template-columns: 1fr;
  }

  .home-topic-card {
    min-height: 88px;
  }
}

@media (max-width: 576px) {
  .home-intro {
    padding-top: 0.25rem;
    margin-bottom: 1.5rem;
  }

  .home-latest #post-list .card-wrapper {
    margin-bottom: 1rem;
  }

  .post-meta {
    font-size: 0.875rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-topic-card {
    transition: none;
  }

  .home-topic-card:hover {
    transform: none;
  }
}