/* ============ Blog additional styles ============ */

.blog-header {
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(2.5rem, 5vw, 4rem);
  background: var(--void);
  position: relative;
  overflow: hidden;
}
.blog-header::before {
  content: "";
  position: absolute;
  top: -10%; right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(62,214,232,0.12), transparent 60%);
  filter: blur(60px);
  pointer-events: none;
}
.blog-header h1 {
  max-width: 18ch;
  margin: 0.5rem 0 1.5rem;
}
.blog-header .lede { max-width: 42rem; }

/* ============ AI News section ============ */
.ai-news {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: var(--ink);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  position: relative;
  overflow: hidden;
}
.ai-news::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(62,214,232,0.4), transparent);
}
.ai-news-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.5rem;
}
.ai-news-head h2 { max-width: 18ch; margin: 0.3em 0 0.5em; }
.ai-news-head .lede { max-width: 36rem; }
@media (max-width: 800px) {
  .ai-news-head { grid-template-columns: 1fr; }
}

.news-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 2.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-3);
  letter-spacing: 0.04em;
}
.news-status.error { color: var(--amber); }
.news-status .pulse {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(62,214,232,0.2), 0 0 10px var(--cyan);
  animation: pulse 1.5s ease-in-out infinite;
}
.news-status.error .pulse {
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber);
  animation: none;
}

.news-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.news-card {
  padding: 1.5rem 1.75rem;
  background: var(--void);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: baseline;
  transition: background .25s;
}
.news-card:hover { background: var(--surface); }
.news-idx {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: -0.04em;
  line-height: 1;
  min-width: 2.5rem;
}
.news-body h4 {
  color: var(--text);
  font-size: 1.1rem;
  margin: 0.3rem 0 0.5rem;
  line-height: 1.3;
}
.news-body p {
  color: var(--text-3);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0;
}
.news-meta {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.news-cat {
  padding: 0.2rem 0.55rem;
  background: rgba(62,214,232,0.1);
  border: 1px solid rgba(62,214,232,0.3);
  border-radius: 2px;
  color: var(--cyan);
  font-weight: 600;
}
.news-source { color: var(--text-4); }

.news-footnote {
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-4);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
}

/* ============ Featured post ============ */
.featured-post {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: var(--void);
}
.featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding: 2.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink);
  margin-top: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color .25s;
}
.featured::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--cyan), transparent);
}
.featured:hover { border-color: var(--cyan); }
.featured-media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.placeholder-visual { width: 100%; height: 100%; }
.placeholder-visual svg { width: 100%; height: 100%; }
.featured-media .post-tag { top: 12px; left: 12px; }
.featured-body h2 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  margin: 1rem 0 1rem;
  color: var(--text);
  line-height: 1.15;
}
.featured-body p {
  color: var(--text-3);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
}
.post-meta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.post-tag {
  position: absolute;
  padding: 0.25rem 0.6rem;
  background: rgba(5,7,10,0.7);
  border: 1px solid rgba(62,214,232,0.4);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--cyan);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  z-index: 2;
}
@media (max-width: 780px) {
  .featured { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.5rem; }
}

/* ============ Posts grid ============ */
.posts-section {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: var(--void);
  border-top: 1px solid var(--line-soft);
}
.posts-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.posts-head h3 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  color: var(--text);
  margin: 0.3em 0 0;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.post-card {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  position: relative;
}
.post-card:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -12px rgba(62,214,232,0.2);
}
.post-visual {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}
.post-visual svg { width: 100%; height: 100%; display: block; }
.post-card .post-tag {
  position: absolute;
  top: 12px;
  left: 12px;
}
.post-card h4 {
  padding: 0 1.5rem;
  margin: 1.5rem 0 1rem;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.35;
  flex: 1;
}
.post-excerpt {
  padding: 0 1.5rem;
  color: var(--text-3);
  font-size: 0.87rem;
  line-height: 1.55;
  margin: 0 0 1.25rem;
}
.post-card .post-meta {
  padding: 0 1.5rem 1.5rem;
  margin-top: auto;
}
.post-card h4 { flex: 0; margin-bottom: 0.75rem; }

.posts-note {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-4);
  text-align: center;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 580px) {
  .posts-grid { grid-template-columns: 1fr; }
}

/* ============ Subscribe ============ */
.subscribe {
  padding: clamp(3rem, 6vw, 5rem) 0;
  background: var(--ink);
  border-top: 1px solid var(--line-soft);
}
.subscribe-card {
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.subscribe-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}
.subscribe-card h3 {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  color: var(--text);
  margin: 0 0 0.5rem;
}
.subscribe-card p { color: var(--text-3); margin: 0; font-size: 0.9rem; }
.subscribe-form {
  display: flex;
  gap: 0.5rem;
  min-width: 340px;
}
.subscribe-form input {
  flex: 1;
  padding: 0.85rem 1rem;
  background: var(--void);
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
}
.subscribe-form input:focus { border-color: var(--cyan); outline: none; }

@media (max-width: 720px) {
  .subscribe-card { grid-template-columns: 1fr; gap: 1.5rem; }
  .subscribe-form { min-width: 0; flex-direction: column; }
  .subscribe-form .btn { width: 100%; }
}