/* Sticky Open Notes tab — course detail pages */
.mpypcp-open-notes-tab {
  position: fixed;
  right: 0;
  left: auto;
  top: 50%;
  z-index: 10050;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 1.05rem 0.58rem;
  background: var(--primary-red, #c62828);
  color: #fff !important;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  line-height: 1.15;
  text-decoration: none !important;
  white-space: nowrap;
  border: none;
  border-radius: 10px 0 0 10px;
  box-shadow: -2px 3px 12px rgba(198, 40, 40, 0.35);
  transform: translateY(-50%);
  transition: background 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  animation: mpypcp-notes-flash 1.6s ease-in-out infinite;
}

.mpypcp-open-notes-tab__text {
  display: inline-block;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.mpypcp-open-notes-tab:hover,
.mpypcp-open-notes-tab:focus-visible {
  background: var(--accent-red, #b71c1c);
  color: #fff !important;
  box-shadow: -3px 4px 18px rgba(183, 28, 28, 0.5);
  outline: none;
  animation: none;
  filter: brightness(1.05);
}

@keyframes mpypcp-notes-flash {
  0%,
  100% {
    background: var(--primary-red, #c62828);
    box-shadow: -2px 3px 12px rgba(198, 40, 40, 0.35);
    filter: brightness(1);
  }
  50% {
    background: #e53935;
    box-shadow: -4px 4px 22px rgba(229, 57, 53, 0.75), 0 0 0 3px rgba(198, 40, 40, 0.25);
    filter: brightness(1.12);
  }
}

@media (prefers-reduced-motion: reduce) {
  .mpypcp-open-notes-tab {
    animation: none;
  }
}

@media (max-width: 576px) {
  .mpypcp-open-notes-tab {
    font-size: 0.85rem;
    padding: 0.9rem 0.6rem !important;
    min-width: 2.2rem !important;
  }
}

@media print {
  .mpypcp-open-notes-tab {
    display: none !important;
  }
}