/* ============================================================
   BLOG PAGE — Additional Styles
   ============================================================ */

/* --- Page Header ------------------------------------------ */
.page-header {
  min-height: 52vh;
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
  padding-bottom: 5rem;
  border-bottom: 1px solid var(--border);
}

.page-header-inner {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

.page-title {
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--text);
  margin: 1.5rem 0 1.5rem;
}

.page-subtitle {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--text-muted);
  max-width: 500px;
  line-height: 1.7;
}

.page-header::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 195, 247, 0.07) 0%, transparent 65%);
  pointer-events: none;
  z-index: 1;
}

/* --- Filter Bar ------------------------------------------- */
.filter-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 64px;
  z-index: 50;
}

.filter-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.filter-inner::-webkit-scrollbar {
  display: none;
}

.filter-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: nowrap;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.35rem 0.85rem;
  border-radius: 2px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.pill:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.pill-active {
  color: var(--accent) !important;
  border-color: var(--accent) !important;
  background: var(--accent-dim);
}

/* --- Posts Section ---------------------------------------- */
.posts-section {
  padding: 5rem 0 6rem;
}

/* --- Featured Post ---------------------------------------- */
.post-featured {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0;
  border: 1px solid var(--border);
  background: var(--bg-card);
  margin-bottom: 1.5px;
  transition: border-color 0.2s;
}

.post-featured:hover {
  border-color: var(--accent-dim);
}

.post-featured-content {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.post-featured-title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  color: var(--text);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.post-featured-excerpt {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 600px;
}

.post-featured-aside {
  border-left: 1px solid var(--border);
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  justify-content: center;
  background: var(--bg-alt);
}

.post-stat-block {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.post-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.post-stat-num {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1;
}

.post-stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.topic-heading {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.75rem;
}

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* --- Post Grid -------------------------------------------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
}

.post-card {
  background: var(--bg-alt);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: background 0.2s;
}

.post-card:hover {
  background: var(--bg-card);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.post-card-title {
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.35;
  font-weight: 600;
}

.post-card-excerpt {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  flex: 1;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.read-time {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Load More -------------------------------------------- */
.load-more-wrapper {
  display: flex;
  justify-content: center;
  padding-top: 3rem;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 0.2s;
}

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

/* --- Newsletter ------------------------------------------- */
.newsletter-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 6rem 0;
  text-align: center;
}

.newsletter-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  max-width: 440px;
}

.newsletter-input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.75rem 1rem;
  font-family: var(--font-main);
  font-size: 0.9rem;
  border-radius: 3px;
  outline: none;
  transition: border-color 0.2s;
}

.newsletter-input::placeholder {
  color: var(--text-muted);
}

.newsletter-input:focus {
  border-color: var(--accent);
}

/* --- Active Nav State ------------------------------------- */
.nav-active {
  color: var(--text) !important;
}

/* --- Responsive ------------------------------------------- */
@media (max-width: 900px) {
  .post-featured {
    grid-template-columns: 1fr;
  }

  .post-featured-aside {
    border-left: none;
    border-top: 1px solid var(--border);
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 2rem;
  }

  .post-stat-block {
    flex-direction: row;
    gap: 2rem;
  }

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

@media (max-width: 600px) {
  .posts-grid {
    grid-template-columns: 1fr;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .page-header {
    padding-bottom: 3rem;
  }
}