/* Shared notification bell — admin / instructor / portal */
.np-bell {
  position: relative;
  display: inline-flex;
  align-items: center;
  z-index: 40;
}

.np-bell__trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.np-bell__trigger:hover {
  background: rgba(22, 93, 49, 0.08);
  color: #165d31;
}

.np-bell__badge {
  position: absolute;
  top: 0.15rem;
  inset-inline-end: 0.1rem;
  min-width: 1.05rem;
  height: 1.05rem;
  padding: 0 0.25rem;
  border-radius: 999px;
  background: #dc2626;
  color: #fff;
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1.05rem;
  text-align: center;
  box-shadow: 0 0 0 2px #fff;
}

.np-bell__backdrop {
  position: fixed;
  inset: 0;
  z-index: 45;
  background: transparent;
}

.np-bell__panel {
  position: absolute;
  top: calc(100% + 0.45rem);
  inset-inline-end: 0;
  z-index: 50;
  width: min(380px, calc(100vw - 1.25rem));
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
  overflow: hidden;
  animation: npBellIn 0.18s ease;
}

@keyframes npBellIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.np-bell__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #edf1f5;
  background: #f8fafc;
}

.np-bell__head strong {
  display: block;
  color: #0f172a;
  font-size: 0.88rem;
}

.np-bell__count {
  display: inline-block;
  margin-top: 0.2rem;
  color: #166534;
  font-size: 0.68rem;
  font-weight: 700;
}

.np-bell__head-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.np-bell__head-actions button {
  border: 0;
  background: transparent;
  color: #166534;
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  padding: 0.2rem 0.35rem;
  border-radius: 6px;
}

.np-bell__head-actions button:hover {
  background: #f0fdf4;
}

.np-bell__close {
  width: 1.7rem !important;
  height: 1.7rem;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  color: #64748b !important;
}

.np-bell__list {
  max-height: 22rem;
  overflow-y: auto;
}

.np-bell__item {
  display: flex;
  gap: 0.7rem;
  padding: 0.8rem 1rem;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid #f1f5f9;
  transition: background 0.12s ease;
}

.np-bell__item:hover {
  background: #f8fafc;
}

.np-bell__item.is-unread {
  background: #f0fdf4;
}

.np-bell__icon {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  background: #f1f5f9;
  color: #166534;
  font-size: 0.85rem;
}

.np-bell__item.is-unread .np-bell__icon {
  background: #dcfce7;
}

.np-bell__body {
  min-width: 0;
  display: grid;
  gap: 0.15rem;
}

.np-bell__body strong {
  color: #0f172a;
  font-size: 0.78rem;
  line-height: 1.4;
}

.np-bell__body > span {
  color: #64748b;
  font-size: 0.72rem;
  line-height: 1.45;
}

.np-bell__body time {
  color: #94a3b8;
  font-size: 0.66rem;
}

.np-bell__empty {
  padding: 2rem 1rem;
  text-align: center;
  color: #94a3b8;
}

.np-bell__empty i {
  font-size: 1.4rem;
  margin-bottom: 0.45rem;
  display: block;
}

.np-bell__empty p {
  margin: 0;
  font-size: 0.8rem;
}

.np-bell__footer {
  display: block;
  padding: 0.75rem 1rem;
  text-align: center;
  text-decoration: none;
  color: #166534;
  font-size: 0.76rem;
  font-weight: 800;
  border-top: 1px solid #edf1f5;
  background: #f8fafc;
}

.np-bell__footer:hover {
  background: #f0fdf4;
}

/* Admin variant */
.np-bell--admin .np-bell__trigger {
  border-color: var(--sa-border, #e2e8f0);
  background: var(--surface-card, #fff);
  color: var(--sa-green-dark, #14532d);
}

.np-bell--admin .np-bell__trigger:hover {
  background: var(--sa-green-soft, #f0fdf4);
}

.np-bell--admin .np-bell__badge {
  box-shadow: 0 0 0 2px #fff;
}

/* Portal / site-header alignment */
.site-header-actions__tools .np-bell__trigger {
  width: 2.35rem;
  height: 2.35rem;
  color: inherit;
}

.header-navbar-rht .np-bell {
  margin-inline: 0.15rem;
}

@media (max-width: 575.98px) {
  .np-bell__panel {
    position: fixed;
    top: 4.25rem;
    inset-inline: 0.65rem;
    width: auto;
  }
}