/* ==========================================
   ArthaTek AI – Course Page Styles
   ========================================== */

/* Active nav link */
.active-link {
  color: var(--accent-primary) !important;
}

.active-link::after {
  width: 100% !important;
}

/* ==========================================
   Course Hero
   ========================================== */
.course-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: var(--gradient-hero);
  overflow: hidden;
  padding: 140px 24px 80px;
}

.course-hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.course-hero-content {
  max-width: 620px;
}

.course-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.course-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.15);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.course-meta-item svg {
  color: var(--accent-primary);
  flex-shrink: 0;
}

/* ==========================================
   Price Card (Hero)
   ========================================== */
.course-hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.course-price-card {
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
  max-width: 360px;
  width: 100%;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(45, 212, 191, 0.08);
  animation: float1 6s ease-in-out infinite;
}

.course-price-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.price-card-badge {
  display: inline-block;
  background: var(--gradient-accent);
  color: var(--navy-900);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 5px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.price-card-emoji {
  font-size: 3rem;
  margin-bottom: 12px;
}

.course-price-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.price-card-price {
  margin-bottom: 28px;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  background: var(--gradient-glow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-period {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.price-card-features {
  list-style: none;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.price-card-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.price-card-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ==========================================
   Course Overview / Features Grid
   ========================================== */
.course-overview {
  padding: var(--section-pad);
  background: var(--bg-secondary);
}

.course-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.course-feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.course-feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform 0.4s ease;
  transform-origin: left;
}

.course-feature-card:hover::before {
  transform: scaleX(1);
}

.course-feature-card:hover {
  border-color: rgba(45, 212, 191, 0.25);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.feature-icon-wrap {
  font-size: 2.2rem;
  margin-bottom: 20px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.15);
  border-radius: 14px;
  transition: all 0.4s ease;
}

.course-feature-card:hover .feature-icon-wrap {
  background: rgba(45, 212, 191, 0.15);
  transform: scale(1.05);
}

.course-feature-card h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.course-feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================
   Schedule Section
   ========================================== */
.course-schedule {
  padding: var(--section-pad);
  background: var(--bg-primary);
}

.schedule-layout {
  max-width: 1000px;
  margin: 0 auto;
}

.schedule-info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.schedule-info-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 22px 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: border-color 0.3s ease;
}

.schedule-info-item:hover {
  border-color: rgba(45, 212, 191, 0.2);
}

.schedule-info-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.schedule-info-item h5 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.schedule-info-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.schedule-info-item strong {
  color: var(--text-primary);
}

/* ==========================================
   Curriculum Section
   ========================================== */
.course-curriculum {
  padding: var(--section-pad);
  background: var(--bg-secondary);
}

.curriculum-timeline {
  max-width: 800px;
  margin: 0 auto;
}

/* ==========================================
   Register CTA Section
   ========================================== */
.course-register {
  padding: var(--section-pad);
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.register-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.register-content {
  position: sticky;
  top: 120px;
}

.register-form-wrapper {
  position: relative;
}

/* ==========================================
   Course Banner (on index.html)
   ========================================== */
.course-banner-section {
  padding: var(--section-pad);
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.course-banner {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
}

.course-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.course-banner-content .section-label {
  margin-bottom: 16px;
}

.course-banner-content .section-title {
  margin-bottom: 16px;
}

.course-banner-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
  margin-bottom: 8px;
}

.course-banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(45, 212, 191, 0.06);
  border: 1px solid rgba(45, 212, 191, 0.12);
  padding: 6px 16px;
  border-radius: 50px;
}

.course-banner-tag svg {
  color: var(--accent-primary);
}

.course-banner-visual {
  display: flex;
  justify-content: center;
}

.course-banner-card {
  background: rgba(10, 15, 30, 0.6);
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  text-align: center;
  min-width: 220px;
  animation: float2 7s ease-in-out infinite;
}

.course-banner-card-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.course-banner-card-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-primary);
  margin-bottom: 8px;
}

.course-banner-card-price {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-glow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.course-banner-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================
   Responsive — Course Page
   ========================================== */
@media (max-width: 1024px) {
  .course-hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .course-hero-content {
    max-width: 100%;
  }

  .course-hero-meta {
    justify-content: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .course-hero-visual {
    justify-content: center;
  }

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

  .schedule-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .schedule-info-cards {
    grid-template-columns: 1fr;
  }

  .register-wrapper {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .register-content {
    position: static;
    text-align: center;
  }

  .course-banner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 40px 32px;
  }

  .course-banner-highlights {
    justify-content: center;
  }

  .course-banner-content .btn-primary {
    margin: 12px auto 0;
  }
}

@media (max-width: 768px) {
  .course-hero {
    padding: 110px 16px 60px;
    min-height: auto;
  }

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

  .course-price-card {
    padding: 32px 24px;
  }

  .price-amount {
    font-size: 2.2rem;
  }

  .course-banner {
    padding: 32px 20px;
  }
}

@media (max-width: 480px) {
  .course-hero-meta {
    flex-direction: column;
    align-items: center;
  }
}