.notification-stack {
  position: fixed;
  top: 20px;
  right: 24px;
  display: grid;
  gap: 12px;
  width: min(360px, 90vw);
  max-height: 70vh;
  z-index: 80;
  justify-items: end;
  justify-content: end;
  align-content: start;
  pointer-events: none;
  grid-auto-rows: minmax(min-content, max-content);
  grid-auto-flow: row dense;
  transition: grid-auto-flow 120ms ease, gap 120ms ease, width 120ms ease;
}

.notification-stack[data-mode='compact']:not([data-expanded='true']) {
  grid-auto-flow: column dense;
  grid-auto-columns: minmax(220px, max-content);
  align-items: start;
  gap: 8px;
  width: min(440px, 90vw);
}

.notification-stack[data-mode='compact'][data-expanded='true'],
.notification-stack[data-mode='compact'][data-locked='true'] {
  grid-auto-flow: row dense;
  width: min(360px, 90vw);
}

.notification-stack[data-expanded='true'] {
  pointer-events: auto;
}

.notification-stack[data-mode='compact']:not([data-expanded='true']) .notification-item {
  min-width: 220px;
}

.notification-stack[data-mode='compact']:not([data-expanded='true']) .notification-overflow {
  margin-left: -6px;
}

.notification-stack[data-expanded='true'] .notification-overflow {
  display: none;
}

.notification-item {
  pointer-events: auto;
  background: linear-gradient(145deg, rgba(18, 21, 34, 0.95), rgba(30, 34, 56, 0.9));
  padding: 16px 18px;
  border-radius: 16px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.06);
  min-width: min(260px, 90vw);
  max-width: clamp(260px, 80vw, 360px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 160ms ease, opacity 160ms ease, box-shadow 160ms ease;
  transform: translateX(0);
  position: relative;
  overflow: hidden;
}

.notification-item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 160ms ease;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.notification-item:hover {
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.65);
}

.notification-item:hover::after {
  opacity: 1;
}

.notification-item.dragging {
  transition: none;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6);
}

.notification-item.dismissed {
  opacity: 0;
  transform: translateX(120%);
}

.notification-overflow {
  pointer-events: auto;
  align-self: start;
  justify-self: end;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(22, 26, 40, 0.5);
  backdrop-filter: blur(18px);
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease,
    color 140ms ease, background 140ms ease;
}

.notification-overflow:hover,
.notification-overflow:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.45);
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(30, 34, 56, 0.62);
  color: rgba(255, 255, 255, 0.82);
  outline: none;
}

.notification-overflow-icon {
  font-size: 22px;
  line-height: 1;
}

.notification-overflow-count {
  position: absolute;
  top: -6px;
  right: -2px;
  min-width: 18px;
  padding: 2px 6px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, rgba(255, 82, 82, 0.92), rgba(255, 0, 82, 0.78));
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  box-shadow: 0 4px 10px rgba(255, 0, 82, 0.45);
}

.notification-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
}

.notification-header-main {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.notification-icon {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.notification-title {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  font-size: 14px;
  flex: 1;
  min-width: 0;
}

.notification-body {
  font-size: 15px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.88);
  word-break: break-word;
}

.notification-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
  margin-top: 4px;
}

.notification-actions button {
  border-radius: 12px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.16);
  cursor: pointer;
  transition:
    transform 120ms ease,
    box-shadow 120ms ease,
    background 120ms ease,
    border-color 120ms ease,
    color 120ms ease;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.notification-actions button.primary {
  border-color: rgba(255, 255, 255, 0.28);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.06));
  color: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35);
}

.notification-actions button.secondary {
  border-color: rgba(255, 255, 255, 0.14);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  color: rgba(255, 255, 255, 0.85);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.notification-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
}

.notification-actions button:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
  outline-offset: 2px;
}

.notification-close {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease, box-shadow 140ms ease;
  backdrop-filter: blur(8px);
  padding: 0;
  font-size: 16px;
  line-height: 1;
}

.notification-close:hover,
.notification-close:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.notification-close:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
  outline-offset: 2px;
}

.notification-item[data-type='success'] .notification-icon {
  background: rgba(78, 205, 196, 0.2);
}

.notification-item[data-type='warning'] .notification-icon {
  background: rgba(255, 184, 108, 0.2);
}

.notification-item[data-type='error'] .notification-icon {
  background: rgba(255, 107, 107, 0.25);
}

.notification-item[data-type='chat'] .notification-icon {
  background: rgba(135, 206, 250, 0.25);
}

.notification-item[data-type='party'] .notification-icon {
  background: rgba(255, 255, 255, 0.18);
}

.notification-item[data-type='friends'] .notification-icon {
  background: rgba(171, 235, 198, 0.22);
}

.notification-item[data-type='store'] .notification-icon {
  background: rgba(255, 214, 165, 0.22);
}