/* ===================================
   Home Page — AI Next Studio Style
   =================================== */

/* === HERO === */
.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
}

/* Video background */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.28;
  z-index: 0;
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10,10,15,0.58) 0%,
    rgba(10,10,15,0.44) 50%,
    rgba(10,10,15,0.84) 100%
  );
  z-index: 1;
}

.hero-glow {
  position: absolute;
  top: -120px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 500px;
  background: radial-gradient(ellipse, rgba(0,245,212,0.06) 0%, transparent 65%);
  pointer-events: none;
  z-index: 2;
}

.hero-inner {
  position: relative;
  text-align: center;
  max-width: 660px;
  margin: 0 auto;
  z-index: 3;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0,245,212,0.07);
  border: 1px solid rgba(0,245,212,0.18);
  border-radius: 100px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.05em;
  margin-bottom: 32px;
}

.badge-dot {
  width: 6px; height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:.4; transform:scale(.75); }
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(38px, 6vw, 62px);
  font-weight: 800;
  line-height: 1.08;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}
.hero-accent { color: var(--cyan); }

.hero-sub {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-cta { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.hero-welcome { font-size: 15px; color: var(--text-muted); margin-bottom: 4px; }
.hero-welcome strong { color: var(--text); }

/* ============================================
   PATTERN OVERLAY (condiviso tra card)
   ============================================ */
.cp-pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.cp-pattern-grid {
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 28px 28px;
}
.cp-pattern-dots {
  background-image: radial-gradient(circle, rgba(255,255,255,.12) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
}
.cp-pattern-lines {
  background-image: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,.07) 0, rgba(255,255,255,.07) 1px,
    transparent 0, transparent 50%
  );
  background-size: 16px 16px;
}

/* ============================================
   COURSE CARDS
   ============================================ */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.course-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.course-card:hover {
  border-color: rgba(255,255,255,0.14);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,.45);
}

/* Area visiva */
.course-visual {
  position: relative;
  height: 170px;
  overflow: hidden;
}

.course-visual-icon {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 64px; height: 64px;
  background: rgba(0,0,0,.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-num-badge {
  position: absolute;
  top: 14px; left: 16px;
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  color: rgba(255,255,255,.55);
  letter-spacing: 0.1em;
  z-index: 4;
}

.course-enrolled-badge {
  position: absolute;
  top: 10px; right: 12px;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.8);
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  z-index: 4;
  letter-spacing: 0.05em;
}

/* Body corso */
.course-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.course-title {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.course-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}

.course-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.course-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}
.progress-bar {
  flex: 1; height: 3px;
  background: rgba(255,255,255,.08);
  border-radius: 2px; overflow: hidden;
}
.progress-fill { height: 100%; border-radius: 2px; }
.progress-pct { font-family: var(--font-head); font-size: 11px; font-weight: 600; min-width: 28px; }

.course-cta-label {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
}

.course-arr {
  width: 28px; height: 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg3);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: all .2s;
  flex-shrink: 0;
}
.course-card:hover .course-arr {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #0a0a0f;
}

/* ============================================
   POST CARDS — Blog preview
   ============================================ */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.post-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: border-color .25s, transform .25s;
}
.post-card:hover {
  border-color: rgba(255,255,255,.12);
  transform: translateY(-4px);
}

.post-card-img {
  position: relative;
  height: 170px;
  overflow: hidden;
}

.post-card-icon {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 56px; height: 56px;
  background: rgba(0,0,0,.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
}

.post-cat-badge {
  position: absolute;
  bottom: 12px; left: 12px;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.12);
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.8);
  padding: 4px 10px;
  border-radius: 5px;
  z-index: 4;
}

.post-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
}

.post-card-title {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -0.01em;
  flex: 1;
}

.post-card-excerpt {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

.post-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.post-card-meta {
  font-size: 11.5px;
  color: var(--text-dim);
}

.post-card-arr {
  width: 26px; height: 26px;
  border-radius: 7px;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: all .2s;
}
.post-card:hover .post-card-arr {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #0a0a0f;
}

.blog-preview-section { border-top: 1px solid var(--border); }

.posts-grid-3 {
  grid-template-columns: repeat(3, 1fr) !important;
}

/* ============================================
   STATS + CTA
   ============================================ */
.stats-cta-section {
  padding: 0 0 80px;
}

/* Stats bar */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 40px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 48px;
}

.stat-num {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 800;
  color: var(--cyan);
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-head);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  flex-shrink: 0;
}

/* CTA block */
.cta-block {
  position: relative;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px 64px;
  overflow: hidden;
}

.cta-block-glow {
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  background: radial-gradient(ellipse, rgba(0,245,212,0.07) 0%, transparent 65%);
  pointer-events: none;
}

.cta-block-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.cta-block-text { max-width: 520px; }

.cta-block-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.cta-block-sub {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.65;
}

.cta-block-action {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  flex-shrink: 0;
}

/* === RESPONSIVE === */
@media (max-width: 1100px) {
  .courses-grid          { grid-template-columns: repeat(3, 1fr); }
  .posts-grid            { grid-template-columns: repeat(2, 1fr); }
  .posts-grid-3          { grid-template-columns: repeat(2, 1fr) !important; }
  .stat-item             { padding: 0 28px; }
  .cta-block             { padding: 44px 40px; }
}
@media (max-width: 900px) {
  .hero                  { padding: 80px 0 60px; }
  .courses-grid          { grid-template-columns: repeat(2, 1fr); }
  .cta-block-content     { flex-direction: column; align-items: flex-start; gap: 32px; }
  .cta-block-action      { flex-direction: row; }
}
@media (max-width: 640px) {
  .hero                  { padding: 64px 0 48px; }
  .courses-grid          { grid-template-columns: 1fr; }
  .posts-grid,
  .posts-grid-3          { grid-template-columns: 1fr !important; }
  .stats-bar             { padding: 24px 20px; gap: 16px; }
  .stat-item             { padding: 0 16px; }
  .stat-divider          { display: none; }
  .cta-block             { padding: 36px 24px; }
  .cta-block-action      { flex-direction: column; width: 100%; }
  .cta-block-action .btn { width: 100%; justify-content: center; }
}