/* Mobile Menu Fixes */
@media (max-width: 960px) {
  .nav {
    display: none !important;
  }
  
  .nav.open {
    display: flex !important;
  }
  
  .mobile-menu-btn {
    display: flex !important;
  }
  
  .header__cta {
    display: none !important;
  }
}

/* Course Images Fix */
.courses .thumb img,
#courses .thumb img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  display: block !important;
}

/* Card Size Optimization */
#courses .card,
#certificates .card,
#university .card {
  max-width: 100%;
  width: 100%;
}

/* University Section Fix */
#university .card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: auto;
}

#university .card-actions {
  margin-top: auto;
  padding-top: 12px;
}

/* Mobile Grid Fixes */
@media (max-width: 768px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
}

@media (max-width: 480px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
}

/* Button Alignment Fix */
.card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .card-actions {
    flex-direction: column;
    gap: 8px;
  }
  
  .card-actions .btn {
    width: 100%;
  }
}

/* Image Loading Fix */
.courses .thumb,
#courses .thumb {
  background: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 150px;
}

.courses .thumb img,
#courses .thumb img {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.courses .thumb img.loaded,
#courses .thumb img.loaded {
  opacity: 1;
}

/* Mobile Menu Overlay Fix */
.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* Touch Improvements */
@media (max-width: 960px) {
  .btn,
  .nav a,
  .mobile-menu-btn {
    min-height: 44px;
    min-width: 44px;
    touch-action: manipulation;
  }
  
  .card {
    touch-action: manipulation;
  }
}