.notification-center {
  position: relative;
}

.notification-bell-container {
  display: flex;
  align-items: center;
}

.notification-bell {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  position: relative;
  padding: 0.5rem;
  transition: transform 0.2s;
}

.notification-bell:hover {
  transform: scale(1.1);
}

.notification-badge {
  position: absolute;
  top: 0;
  right: 0;
  background: #ef4444;
  color: #fff;
  border-radius: 50%;
  width: 1.2rem;
  height: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1;
}

/* ── Panel ── */
.notification-popup {
  position: fixed;
  top: 60px;
  right: 20px;
  width: 420px;
  max-height: 600px;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ── */
.notification-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid #334155;
  background: #0f172a;
}

.notification-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: #f1f5f9;
  letter-spacing: 0.01em;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  color: #64748b;
  padding: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.close-btn:hover {
  color: #e2e8f0;
  background: #334155;
}

/* ── Filters ── */
.notification-filters {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 0.875rem;
  border-bottom: 1px solid #334155;
  background: #1e293b;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.3rem 0.65rem;
  border: 1px solid #334155;
  background: transparent;
  color: #94a3b8;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.15s;
}

.filter-btn:hover {
  border-color: #14b8a6;
  color: #14b8a6;
}

.filter-btn.active {
  background: #14b8a6;
  color: #0f172a;
  border-color: #14b8a6;
  font-weight: 600;
}

.clear-btn {
  margin-left: auto;
  background: transparent;
  color: #f87171;
  border-color: #f87171;
}

.clear-btn:hover {
  background: #f87171;
  color: #0f172a;
  border-color: #f87171;
}

/* ── List ── */
.notification-list {
  flex: 1;
  overflow-y: auto;
  max-height: 460px;
}

.notification-item {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid #1e293b;
  display: flex;
  gap: 0.75rem;
  background: #1e293b;
  transition: background 0.15s;
  cursor: default;
}

.notification-item:last-child {
  border-bottom: none;
}

.notification-item:hover {
  background: #263347;
}

.notification-item.unread {
  background: #162032;
  border-left: 3px solid #14b8a6;
}

.notification-item.unread:hover {
  background: #1c2a40;
}

/* ── Content ── */
.notification-content {
  flex: 1;
  min-width: 0;
}

.notification-title {
  font-weight: 600;
  margin-bottom: 0.3rem;
  font-size: 0.875rem;
  color: #f1f5f9;
  line-height: 1.3;
}

.notification-message {
  font-size: 0.8rem;
  color: #94a3b8;
  margin-bottom: 0.5rem;
  word-break: break-word;
  line-height: 1.45;
}

.notification-meta {
  display: flex;
  gap: 0.5rem;
  font-size: 0.72rem;
  color: #64748b;
  flex-wrap: wrap;
  align-items: center;
}

.notification-resource {
  background: #0f172a;
  color: #94a3b8;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  border: 1px solid #334155;
  font-size: 0.7rem;
}

.notification-time {
  white-space: nowrap;
}

/* ── Actions ── */
.notification-actions {
  display: flex;
  gap: 0.25rem;
  align-items: flex-start;
  flex-shrink: 0;
}

.action-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.25rem 0.4rem;
  color: #475569;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.action-btn:hover {
  background: #334155;
  color: #e2e8f0;
}

.action-btn.mark-read:hover {
  color: #4ade80;
}

.action-btn.delete:hover {
  color: #f87171;
}

/* ── Empty state ── */
.notification-empty {
  padding: 2.5rem 1rem;
  text-align: center;
  color: #475569;
  font-size: 0.875rem;
}

/* ── Scrollbar ── */
.notification-list::-webkit-scrollbar {
  width: 5px;
}

.notification-list::-webkit-scrollbar-track {
  background: #0f172a;
}

.notification-list::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 3px;
}

.notification-list::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* ── Push prompt ── */
.push-prompt {
  padding: 0.4rem 0.875rem 0;
}

/* ── Mobile ── */
@media (max-width: 600px) {
  .notification-popup {
    position: fixed;
    top: 60px;
    right: 10px;
    left: 10px;
    width: auto;
    max-height: 70vh;
  }

  .notification-filters {
    flex-direction: column;
  }

  .filter-btn {
    flex: 1;
  }

  .clear-btn {
    margin-left: 0;
  }
}