/* ============================================================
   ABIDE - Animations & Transitions
   ============================================================ */

/* --- View Transition System --- */
.view-enter {
  animation: viewSlideIn 260ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.view-enter-back {
  animation: viewSlideInBack 260ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.view-exit {
  animation: viewSlideOut 220ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

@keyframes viewSlideIn {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes viewSlideInBack {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes viewSlideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-24px);
  }
}

/* --- Tab Switch Animation --- */
.tab-switch-enter {
  animation: tabFadeIn 180ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

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

/* --- Card Entrance --- */
.card-enter {
  animation: cardRise 320ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.card-enter:nth-child(2) { animation-delay: 60ms; }
.card-enter:nth-child(3) { animation-delay: 120ms; }
.card-enter:nth-child(4) { animation-delay: 180ms; }

@keyframes cardRise {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* --- Fade In / Out --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* --- Fade Up --- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Scale In (for modals, sheets) --- */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* --- Spinner --- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Heartbeat (for streak badge) --- */
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

.heartbeat {
  animation: heartbeat 2.5s ease-in-out infinite;
}

/* --- Shimmer Loading Skeleton --- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-sunken) 25%,
    var(--color-border) 50%,
    var(--color-surface-sunken) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

.skeleton-text {
  height: 1em;
  border-radius: var(--radius-full);
  margin-bottom: 0.5em;
}

.skeleton-block {
  border-radius: var(--radius-xl);
}

/* --- Tab Item Tap Feedback --- */
.tab-item {
  -webkit-tap-highlight-color: transparent;
}

.tab-item:active .tab-icon {
  transform: scale(0.88);
}

/* --- Button press effect --- */
.btn:active {
  transform: scale(0.97);
}

.btn-primary:active {
  transform: scale(0.97);
  box-shadow: none;
}

/* --- Collapsible animation --- */
.collapsible__content {
  overflow: hidden;
}

.collapsible__content.animating {
  display: block;
  animation: collapseOpen 200ms ease forwards;
}

.collapsible.closing .collapsible__content {
  display: block;
  animation: collapseClose 180ms ease forwards;
}

@keyframes collapseOpen {
  from { opacity: 0; max-height: 0; }
  to { opacity: 1; max-height: 600px; }
}

@keyframes collapseClose {
  from { opacity: 1; max-height: 600px; }
  to { opacity: 0; max-height: 0; }
}

/* --- Notification Permission Slide Up --- */
.notification-sheet {
  animation: slideUp 350ms cubic-bezier(0.34, 1.3, 0.64, 1);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Prayer session step transition --- */
.prayer-step-enter {
  animation: stepFade 300ms ease forwards;
}

@keyframes stepFade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Timer pulse when near zero --- */
.timer-warning {
  animation: timerPulse 0.5s ease-in-out infinite;
  color: var(--color-error) !important;
}

@keyframes timerPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* --- Source card selection --- */
.source-card {
  transition: all var(--transition-base);
}

.source-card.selected {
  animation: selectPop 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes selectPop {
  from { transform: scale(0.98); }
  to { transform: scale(1); }
}

/* --- Theme / Palette transition (smooth palette + light/dark switch) --- */
html {
  transition:
    background-color 380ms cubic-bezier(0.22, 1, 0.36, 1),
    color 380ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Ambient blobs transition handled inline via CSS vars — ensure root transitions them */
:root {
  transition:
    --accent 380ms cubic-bezier(0.22, 1, 0.36, 1),
    --bg-base 380ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}