/* ==========================================================================
   arabTech Article Page
   ========================================================================== */

/* --------------------------------------------------------------------------
   READING PROGRESS
   -------------------------------------------------------------------------- */

.at-progress {
  position: fixed;
  top: 0;
  inset-inline-start: 0;
  width: 0;
  height: 3px;
  background: var(--at-gradient-primary);
  z-index: calc(var(--at-z-toast) + 1);
  transition: width 50ms linear;
  border-radius: 0 2px 2px 0;
}

/* --------------------------------------------------------------------------
   ARTICLE HERO
   -------------------------------------------------------------------------- */

.at-article-hero {
  padding: var(--at-space-12) 0 var(--at-space-8);
  max-width: 1100px;
  margin-inline: auto;
}

.at-article-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--at-space-2);
  margin-bottom: var(--at-space-6);
  font-size: var(--at-text-sm);
  color: var(--at-text-tertiary);
}

.at-article-hero__breadcrumb a {
  color: var(--at-text-tertiary);
  text-decoration: none;
  transition: color var(--at-transition-fast);
}

.at-article-hero__breadcrumb a:hover {
  color: var(--at-accent-primary);
}

.at-article-hero__breadcrumb svg {
  flex-shrink: 0;
}

.at-article-hero__badge {
  margin-bottom: var(--at-space-4);
}

.at-article-hero__title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: var(--at-weight-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--at-text-primary);
  margin-bottom: var(--at-space-5);
}

.at-article-hero__excerpt {
  font-size: var(--at-text-xl);
  color: var(--at-text-secondary);
  line-height: var(--at-leading-relaxed);
  margin-bottom: var(--at-space-6);
}

.at-article-hero__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--at-space-6);
  padding: var(--at-space-5) 0;
  border-top: 1px solid var(--at-border-primary);
  border-bottom: 1px solid var(--at-border-primary);
}

.at-article-hero__author {
  display: flex;
  align-items: center;
  gap: var(--at-space-3);
}

.at-article-hero__author-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--at-radius-full);
  object-fit: cover;
  border: 2px solid var(--at-border-primary);
}

.at-article-hero__author-info {
  display: flex;
  flex-direction: column;
}

.at-article-hero__author-name {
  font-size: var(--at-text-sm);
  font-weight: var(--at-weight-semibold);
  color: var(--at-text-primary);
}

.at-article-hero__author-role {
  font-size: var(--at-text-xs);
  color: var(--at-text-tertiary);
}

.at-article-hero__meta-item {
  display: flex;
  align-items: center;
  gap: var(--at-space-2);
  font-size: var(--at-text-sm);
  color: var(--at-text-tertiary);
}

.at-article-hero__meta-item svg {
  flex-shrink: 0;
  opacity: 0.5;
}

/* Featured Image */
.at-article-hero__image {
  margin-top: var(--at-space-8);
  border-radius: var(--at-radius-xl);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.at-article-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.at-article-hero__image figcaption {
  font-size: var(--at-text-sm);
  color: var(--at-text-tertiary);
  text-align: center;
  margin-top: var(--at-space-3);
  padding: 0 var(--at-space-4);
}


/* --------------------------------------------------------------------------
   ARTICLE LAYOUT — Content + TOC
   -------------------------------------------------------------------------- */

.at-article-layout {
  display: grid;
  grid-template-columns: 1fr var(--at-toc-width);
  gap: var(--at-space-12);
  max-width: var(--at-container-2xl);
  margin-inline: auto;
  padding: var(--at-space-10) var(--at-space-6);
}

.at-article-content {
  min-width: 0;
}

.at-article-content .at-prose {
  max-width: 100%;
}


/* --------------------------------------------------------------------------
   SHARE SIDEBAR
   -------------------------------------------------------------------------- */

.at-article-sidebar {
  position: relative;
}

.at-article-sidebar__sticky {
  position: sticky;
  top: calc(var(--at-header-height) + var(--at-space-8));
}

.at-share {
  margin-bottom: var(--at-space-6);
}

.at-share__label {
  display: block;
  font-size: var(--at-text-xs);
  font-weight: var(--at-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--at-text-tertiary);
  margin-bottom: var(--at-space-3);
}

.at-share__links {
  display: flex;
  gap: var(--at-space-2);
}

.at-share__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--at-radius-md);
  color: var(--at-text-tertiary);
  border: 1px solid var(--at-border-primary);
  transition: all var(--at-transition-fast);
}

.at-share__link:hover {
  color: var(--at-text-primary);
  border-color: var(--at-border-strong);
  background: var(--at-bg-tertiary);
}

.at-share__link--twitter:hover { color: #1DA1F2; border-color: #1DA1F2; }
.at-share__link--facebook:hover { color: #4267B2; border-color: #4267B2; }
.at-share__link--linkedin:hover { color: #0A66C2; border-color: #0A66C2; }
.at-share__link--whatsapp:hover { color: #25D366; border-color: #25D366; }
.at-share__link--telegram:hover { color: #0088cc; border-color: #0088cc; }


/* --------------------------------------------------------------------------
   POST NAVIGATION
   -------------------------------------------------------------------------- */

.at-post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--at-space-4);
  padding: var(--at-space-8) 0;
  border-top: 1px solid var(--at-border-primary);
  margin-top: var(--at-space-10);
}

.at-post-nav__item {
  display: flex;
  flex-direction: column;
  gap: var(--at-space-2);
  padding: var(--at-space-5);
  background: var(--at-bg-secondary);
  border: 1px solid var(--at-border-primary);
  border-radius: var(--at-radius-lg);
  text-decoration: none;
  transition: all var(--at-transition-base);
}

.at-post-nav__item:hover {
  border-color: var(--at-accent-primary);
  box-shadow: var(--at-shadow-md);
}

.at-post-nav__item--next {
  text-align: start;
}

.at-post-nav__item--prev {
  text-align: end;
}

.at-post-nav__label {
  font-size: var(--at-text-xs);
  color: var(--at-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.at-post-nav__title {
  font-size: var(--at-text-base);
  font-weight: var(--at-weight-semibold);
  color: var(--at-text-primary);
  line-height: var(--at-leading-snug);
}


/* --------------------------------------------------------------------------
   RELATED POSTS
   -------------------------------------------------------------------------- */

.at-related {
  padding: var(--at-space-12) 0;
  border-top: 1px solid var(--at-border-primary);
}

.at-related__title {
  font-size: var(--at-text-2xl);
  font-weight: var(--at-weight-bold);
  margin-bottom: var(--at-space-8);
}


/* --------------------------------------------------------------------------
   COMMENTS
   -------------------------------------------------------------------------- */

.at-comments {
  padding: var(--at-space-10) 0;
  border-top: 1px solid var(--at-border-primary);
}

.at-comments__title {
  font-size: var(--at-text-2xl);
  font-weight: var(--at-weight-bold);
  margin-bottom: var(--at-space-8);
}

.at-comment {
  display: flex;
  gap: var(--at-space-4);
  padding: var(--at-space-5) 0;
}

.at-comment + .at-comment {
  border-top: 1px solid var(--at-border-secondary);
}

.at-comment__avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--at-radius-full);
  flex-shrink: 0;
}

.at-comment__body {
  flex: 1;
}

.at-comment__header {
  display: flex;
  align-items: center;
  gap: var(--at-space-3);
  margin-bottom: var(--at-space-2);
}

.at-comment__author {
  font-size: var(--at-text-sm);
  font-weight: var(--at-weight-semibold);
  color: var(--at-text-primary);
}

.at-comment__date {
  font-size: var(--at-text-xs);
  color: var(--at-text-tertiary);
}

.at-comment__text {
  font-size: var(--at-text-sm);
  color: var(--at-text-secondary);
  line-height: var(--at-leading-relaxed);
}


/* --------------------------------------------------------------------------
   TUTORIAL STEPS
   -------------------------------------------------------------------------- */

.at-tutorial-steps {
  display: flex;
  align-items: center;
  gap: var(--at-space-2);
  padding: var(--at-space-5) var(--at-space-6);
  background: var(--at-bg-secondary);
  border: 1px solid var(--at-border-primary);
  border-radius: var(--at-radius-lg);
  margin-bottom: var(--at-space-8);
  overflow-x: auto;
}

.at-tutorial-step {
  display: flex;
  align-items: center;
  gap: var(--at-space-2);
  padding: var(--at-space-2) var(--at-space-3);
  font-size: var(--at-text-sm);
  color: var(--at-text-tertiary);
  white-space: nowrap;
  border-radius: var(--at-radius-md);
  transition: all var(--at-transition-fast);
}

.at-tutorial-step.active {
  color: var(--at-accent-primary);
  background: var(--at-accent-primary-light);
  font-weight: var(--at-weight-medium);
}

.at-tutorial-step.completed {
  color: var(--at-accent-success);
}

.at-tutorial-step__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--at-radius-full);
  border: 2px solid currentColor;
  font-size: var(--at-text-xs);
  font-weight: var(--at-weight-bold);
  flex-shrink: 0;
}

.at-tutorial-step.active .at-tutorial-step__number {
  background: var(--at-accent-primary);
  color: white;
  border-color: var(--at-accent-primary);
}

.at-tutorial-step.completed .at-tutorial-step__number {
  background: var(--at-accent-success);
  color: white;
  border-color: var(--at-accent-success);
}

.at-tutorial-step__connector {
  width: 24px;
  height: 2px;
  background: var(--at-border-primary);
  flex-shrink: 0;
}


.at-article-sidebar--mobile {
  display: none;
}

/* --------------------------------------------------------------------------
   ARTICLE RESPONSIVE
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .at-article-layout {
    grid-template-columns: 1fr;
    gap: var(--at-space-8);
  }

  .at-article-sidebar {
    display: none;
  }

  .at-article-sidebar--mobile {
    display: flex;
    position: fixed;
    bottom: 0;
    inset-inline: 0;
    padding: var(--at-space-3) var(--at-space-4);
    background: var(--at-bg-secondary);
    border-top: 1px solid var(--at-border-primary);
    z-index: var(--at-z-sticky);
    justify-content: center;
  }

  .at-article-sidebar--mobile .at-share__links {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .at-article-hero {
    padding: var(--at-space-8) 0 var(--at-space-6);
  }

  .at-article-hero__title {
    font-size: var(--at-text-3xl);
  }

  .at-article-hero__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--at-space-4);
  }

  .at-article-hero__image {
    border-radius: var(--at-radius-lg);
    margin-top: var(--at-space-6);
  }

  .at-article-layout {
    padding: var(--at-space-6) var(--at-space-4);
  }

  .at-article-content .at-prose {
    font-size: var(--at-text-base);
  }

  .at-post-nav {
    grid-template-columns: 1fr;
  }

  .at-tutorial-steps {
    padding: var(--at-space-3) var(--at-space-4);
    gap: var(--at-space-1);
    overflow-x: auto;
  }

  .at-tutorial-step {
    padding: var(--at-space-1) var(--at-space-2);
    font-size: var(--at-text-xs);
    white-space: nowrap;
  }

  .at-related {
    padding: var(--at-space-8) 0;
  }

  .at-comments {
    padding: var(--at-space-8) 0;
  }
}