/* motion — keyframes and transitions */
@keyframes fadeIn   { from { opacity: 0; }                          to { opacity: 1; } }
@keyframes slideUp  { from { opacity: 0; transform: translateY(8px) scale(.99); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes shimmer  { from { background-position: 200% 0; }          to { background-position: -200% 0; } }

@keyframes confettiFall {
  0%   { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  80%  { opacity: 1; }
  100% { transform: translateY(105vh) rotate(720deg); opacity: 0; }
}

/* Toast */
.toast-stack {
  position: fixed;
  bottom: var(--s-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  z-index: 2000;
  pointer-events: none;
  align-items: center;
}
.toast {
  background: var(--surface);
  border: 1px solid var(--hair-strong);
  padding: var(--s-2) var(--s-4);
  border-radius: var(--r-pill);
  font-size: var(--t-sm);
  font-family: var(--f-mono);
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: var(--s-2);
  box-shadow: 0 8px 28px rgba(0,0,0,.5);
  white-space: nowrap;
  animation: toastIn .25s var(--ease), toastOut .25s var(--ease) 2.6s forwards;
  letter-spacing: .02em;
  font-size: 12px;
}
.toast--success { border-color: var(--done-soft); }
.toast--error   { border-color: var(--overdue-line); color: var(--overdue); }

@keyframes toastIn  { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { from { opacity: 1; }                              to { opacity: 0; transform: translateY(-4px); } }

/* Confetti */
.confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 3000;
  overflow: hidden;
}
.confetti-piece {
  position: absolute;
  animation: confettiFall linear forwards;
  border-radius: 1px;
}