/* AI Academy — professional page styles */

.academy-main {
  padding-top: 72px;
}

/* Hero */
.academy-hero {
  background: linear-gradient(135deg, var(--navy) 0%, #1a3a8f 55%, #1a56db 100%);
  color: var(--white);
  padding: 80px 0 72px;
  position: relative;
  overflow: hidden;
}

.academy-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, black 30%, transparent 100%);
}

.academy-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.academy-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
}

.academy-hero-badge .dot {
  width: 7px;
  height: 7px;
  background: #4ade80;
  border-radius: 50%;
}

.academy-hero h1 {
  font-size: clamp(36px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.academy-hero h1 span {
  color: var(--sky-deep);
}

.academy-hero-lead {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 32px;
  max-width: 520px;
}

.academy-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--white);
  color: var(--navy);
  border-radius: 8px;
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.6);
}

.academy-hero-visual {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 32px;
  backdrop-filter: blur(8px);
}

.academy-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.academy-stat {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
}

.academy-stat-num {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}

.academy-stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 600;
  line-height: 1.4;
}

/* Stats bar */
.academy-stats-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border-lt);
  padding: 28px 0;
  margin-top: -1px;
}

.academy-stats-bar-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.bar-stat-num {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
}

.bar-stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
  font-weight: 500;
}

/* Sections */
.academy-body {
  padding: 72px 0 80px;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-head .label {
  justify-content: center;
}

.section-head h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 14px;
  line-height: 1.15;
}

.section-head p {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.75;
}

/* Differentiator */
.diff-band {
  background: var(--off);
  border: 1px solid var(--border-lt);
  border-radius: 16px;
  padding: 40px 48px;
  margin-bottom: 72px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.diff-band h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 12px;
}

.diff-band p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.75;
}

.diff-highlight {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.75;
  padding-left: 20px;
  border-left: 3px solid var(--blue);
}

.diff-highlight strong {
  color: var(--navy);
}

/* Audience */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 72px;
}

.audience-card {
  background: var(--white);
  border: 1px solid var(--border-lt);
  border-radius: 14px;
  padding: 24px 16px;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.audience-card:hover {
  border-color: var(--blue-lt);
  box-shadow: 0 8px 28px rgba(26, 86, 219, 0.08);
}

.audience-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.audience-card h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.35;
}

/* Program tracks */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}

.track-card {
  background: var(--white);
  border: 1px solid var(--border-lt);
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s, transform 0.25s;
}

.track-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(13, 45, 107, 0.1);
}

.track-header {
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--border-lt);
}

.track-level {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 8px;
}

.track-card h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
}

.track-sub {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.track-body {
  padding: 24px 28px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.track-courses {
  list-style: none;
  margin-bottom: 20px;
  flex: 1;
}

.track-courses li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-2);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-lt);
}

.track-courses li:last-child {
  border-bottom: none;
}

.track-courses li::before {
  content: '→';
  color: var(--blue);
  font-weight: 700;
  flex-shrink: 0;
}

.track-meta {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  padding-top: 16px;
  border-top: 1px solid var(--border-lt);
}

.track-card.foundation .track-header {
  background: linear-gradient(160deg, #eef4ff, #f8fbff);
}

.track-card.professional .track-header {
  background: linear-gradient(160deg, #e8f0fe, #f5f8ff);
}

.track-card.advanced .track-header {
  background: linear-gradient(160deg, #dbeafe, #eff6ff);
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}

.feature-card {
  display: flex;
  gap: 18px;
  padding: 28px;
  background: var(--off);
  border: 1px solid var(--border-lt);
  border-radius: 14px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--sky);
  border: 1px solid var(--sky-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.feature-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

/* Full curriculum */
.curriculum-section {
  margin-bottom: 72px;
}

.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.curriculum-item {
  background: var(--white);
  border: 1px solid var(--border-lt);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  transition: border-color 0.2s;
}

.curriculum-item:hover {
  border-color: var(--blue);
}

.curriculum-item .ci-icon {
  font-size: 24px;
  margin-bottom: 10px;
}

.curriculum-item h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.35;
}

/* CTA */
.academy-cta {
  background: linear-gradient(135deg, var(--navy), #1a56db);
  border-radius: 20px;
  padding: 56px 48px;
  text-align: center;
  color: var(--white);
}

.academy-cta h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--white);
}

.academy-cta p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.75;
}

.academy-cta .btn-white {
  margin: 0 6px;
}

/* Responsive */
@media (max-width: 960px) {
  .academy-hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .academy-stats-bar-inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .diff-band {
    grid-template-columns: 1fr;
    padding: 32px;
  }

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

  .tracks-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .academy-hero {
    padding: 60px 0 48px;
  }

  .academy-body {
    padding: 48px 0 60px;
  }

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

  .academy-cta {
    padding: 40px 24px;
  }

  .academy-hero-actions {
    flex-direction: column;
  }

  .academy-hero-actions .btn-white,
  .academy-hero-actions .btn-ghost {
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .curriculum-grid {
    grid-template-columns: 1fr;
  }
}