/* ─── CURRICULUM SECTION ─── */
.curriculum-section {
  scroll-margin-top: 96px;
  background: linear-gradient(135deg, rgba(26, 86, 219, 0.12) 0%, rgba(99, 102, 241, 0.12) 50%, rgba(58, 134, 255, 0.08) 100%);
  border: 1.5px solid rgba(26, 86, 219, 0.3);
  border-radius: 20px;
  padding: 56px 40px;
  margin: 32px 0 32px 0;
  text-align: center;
  box-shadow: 0 10px 40px rgba(26, 86, 219, 0.1);
  position: relative;
  overflow: hidden;
}

.curriculum-section::before {
  content: '';
  position: absolute;
  top: -45%;
  right: -45%;
  width: 190%;
  height: 190%;
  background: radial-gradient(circle, rgba(58, 134, 255, 0.11) 0%, transparent 70%);
  pointer-events: none;
}

.curriculum-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  letter-spacing: -0.025em;
  position: relative;
  z-index: 1;
}

.curriculum-subtitle {
  font-size: 0.98rem;
  color: var(--text-md);
  margin-bottom: 40px;
  line-height: 1.7;
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.curriculum-buttons {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn-curriculum {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #1a56db 0%, #3b82f6 100%);
  color: white;
  font-weight: 700;
  font-size: 1rem;
  padding: 16px 40px;
  border-radius: 12px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 6px 20px rgba(26, 86, 219, 0.35), 0 2px 4px rgba(0, 0, 0, 0.1);
  text-align: center;
  position: relative;
  overflow: visible;
  font-family: 'Plus Jakarta Sans', sans-serif;
  letter-spacing: 0.3px;
}

.btn-curriculum::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, #0ea5e9, #3b82f6, #1a56db);
  border-radius: 12px;
  opacity: 0;
  z-index: -1;
  transition: opacity 0.4s ease;
}

.btn-curriculum::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  border-radius: 12px;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.btn-curriculum:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 10px 28px rgba(26, 86, 219, 0.45), 0 3px 7px rgba(0, 0, 0, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-curriculum:hover::before {
  opacity: 0.14;
}

.btn-curriculum:hover::after {
  opacity: 1;
  transform: none;
}

.btn-curriculum:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: 0 4px 12px rgba(26, 86, 219, 0.35), 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-curriculum:active {
  transform: translateY(-1px) scale(0.98);
}

.btn-curriculum.btn-6weeks {
  background: linear-gradient(135deg, #1a56db 0%, #3b82f6 100%);
  border: 2px solid rgba(26, 86, 219, 0.2);
}

.btn-curriculum.btn-6weeks:hover {
  background: linear-gradient(135deg, #0f3a8f 0%, #2563eb 100%);
}

.btn-curriculum.btn-12weeks {
  background: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
  border: 2px solid rgba(14, 165, 233, 0.2);
}

.btn-curriculum.btn-12weeks:hover {
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
}

.btn-curriculum i {
  font-size: 1.2rem;
  transition: transform 0.4s ease;
}

.btn-curriculum:hover i {
  transform: scale(1.2) rotate(5deg);
}

/* Loading spinner */
.pdf-loading {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10000;
}

.pdf-loading.active {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
}

.spinner {
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top: 4px solid white;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .curriculum-section {
    padding: 40px 24px;
    margin: 32px 0;
  }

  .curriculum-title {
    font-size: 1.6rem;
  }

  .curriculum-subtitle {
    font-size: 0.92rem;
    margin-bottom: 32px;
  }

  .curriculum-buttons {
    flex-direction: column;
    gap: 16px;
  }

  .btn-curriculum {
    width: 100%;
    justify-content: center;
    padding: 14px 32px;
    font-size: 0.95rem;
  }

  .btn-curriculum:hover {
    transform: translateY(-2px) scale(1.05);
  }
}