.flash-container {
  position: fixed;
  top: calc(var(--nav-height) + 12px);
  left: 50%;
  transform: translateX(-50%);
  width: min(480px, calc(100vw - 32px));
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.flash {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid;
  animation: flash-in 280ms var(--ease) both;
}

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

.flash-icon {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.flash-notice,
.flash-success {
  color: var(--success);
  background: var(--success-soft);
  border-color: rgba(34, 217, 160, 0.18);
}
.flash-notice .flash-icon,
.flash-success .flash-icon {
  background: rgba(34, 217, 160, 0.12);
}

.flash-alert,
.flash-error {
  color: var(--danger);
  background: var(--danger-soft);
  border-color: rgba(255, 91, 106, 0.18);
}
.flash-alert .flash-icon,
.flash-error .flash-icon {
  background: rgba(255, 91, 106, 0.12);
}

.flash-warning {
  color: var(--warning);
  background: var(--warning-soft);
  border-color: rgba(255, 176, 58, 0.18);
}
.flash-warning .flash-icon {
  background: rgba(255, 176, 58, 0.12);
}

.flash-info {
  color: var(--info);
  background: var(--info-soft);
  border-color: rgba(78, 168, 232, 0.18);
}
.flash-info .flash-icon {
  background: rgba(78, 168, 232, 0.12);
}