/* timeline.css */

.page-header {
  padding: 4rem 2rem 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
  text-align: center;
}

.page-header h1 {
  margin-bottom: 2rem;
}

.filter-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.6rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  border-radius: 4px;
  transition: all var(--duration-base) ease;
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
  font-weight: 600;
}

/* Featured Article */
.featured-article {
  max-width: var(--container-max);
  margin: 3rem auto;
  padding: 2rem;
  background: var(--surface);
  border: 2px solid transparent;
  border-image: linear-gradient(135deg, var(--accent), var(--accent2)) 1;
  border-radius: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 768px) {
  .featured-article {
    grid-template-columns: 1fr;
  }
}

.featured-image {
  width: 100%;
  overflow: hidden;
  border-radius: 4px;
}

.featured-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.featured-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.featured-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.featured-type-badge {
  font-weight: 600;
}

.featured-date {
  color: var(--text-dim);
}

.featured-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.featured-excerpt {
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.featured-link {
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: all var(--duration-base) ease;
}

.featured-link:hover {
  color: var(--accent2);
  transform: translateX(4px);
}

/* Timeline */
.timeline-section {
  position: relative;
  max-width: var(--container-max);
  margin: 4rem auto;
  padding: 0 2rem;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  transform: translateX(-50%);
}

@media (max-width: 900px) {
  .timeline-line {
    left: 0;
  }
}

.timeline-feed {
  position: relative;
  padding: 2rem 0;
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.timeline-item.left {
  grid-template-columns: 1fr 1fr;
}

.timeline-item.right {
  grid-template-columns: 1fr 1fr;
  direction: rtl;
}

.timeline-item.right > * {
  direction: ltr;
}

@media (max-width: 900px) {
  .timeline-item,
  .timeline-item.left,
  .timeline-item.right {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .timeline-item.right > * {
    direction: ltr;
  }
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 2rem;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 3px solid var(--bg);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

@media (max-width: 900px) {
  .timeline-dot {
    left: -8px;
  }
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all var(--duration-base) ease;
  cursor: pointer;
}

.article-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
  transform: translateY(-4px);
}

.article-card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-base) ease;
}

.article-card:hover .article-card-image img {
  transform: scale(1.05);
}

.article-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.article-card-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.article-type-badge {
  font-weight: 600;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  background: color-mix(in srgb, currentColor 15%, transparent);
  border: 1px solid color-mix(in srgb, currentColor 30%, transparent);
}

.article-type-badge.type-tech {
  color: var(--type-tech);
}

.article-type-badge.type-life {
  color: var(--type-life);
}

.article-type-badge.type-quote {
  color: var(--type-quote);
}

.article-type-badge.type-link {
  color: var(--type-link);
}

.article-type-badge.type-photo {
  color: var(--type-photo);
}

.article-date {
  color: var(--text-dim);
}

.article-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0.5rem 0;
}

.article-card-title a {
  color: var(--text);
  text-decoration: none;
  transition: color var(--duration-base) ease;
}

.article-card-title a:hover {
  color: var(--accent);
}

.article-card-excerpt {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Hide/show articles based on filter */
.timeline-item[data-type] {
  display: none;
}

.timeline-item[data-type].visible,
.timeline-item[data-filter="all"].visible {
  display: grid;
}

@media (prefers-reduced-motion: reduce) {
  .article-card:hover {
    transform: none;
  }

  .article-card-image img {
    transition: none;
  }
}