/* ========================================
   ANIMATIONS.CSS - Animations et micro-interactions
   ======================================== */

/* ========================================
   KEYFRAMES
   ======================================== */

/* Animation de celebration */
@keyframes celebrate {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

/* Confettis lors de milestone */
@keyframes confetti {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

/* Pulse pour notifications */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Shake pour erreur */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

/* Slide in from bottom */
@keyframes slideInBottom {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Slide up (for modals) */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade in */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Fade out */
@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

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

/* Shimmer effect (for progress bar) */
@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Bounce */
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Float */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Scale in */
@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Wiggle */
@keyframes wiggle {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-5deg);
  }
  75% {
    transform: rotate(5deg);
  }
}

/* Glow */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px var(--primary);
  }
  50% {
    box-shadow: 0 0 20px var(--primary);
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

/* Animation de completion d'habitude */
.habit-item.just-completed {
  animation: celebrate 0.5s ease;
}

/* Animation de notification badge */
.notification-badge {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Animation d'erreur */
.error-shake {
  animation: shake 0.3s ease;
}

/* Slide in from bottom */
.slide-in-bottom {
  animation: slideInBottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Fade in */
.fade-in {
  animation: fadeIn 0.3s ease;
}

/* Fade out */
.fade-out {
  animation: fadeOut 0.3s ease;
}

/* Bounce */
.bounce {
  animation: bounce 0.6s ease;
}

/* Float */
.float {
  animation: float 3s ease-in-out infinite;
}

/* Scale in */
.scale-in {
  animation: scaleIn 0.3s ease;
}

/* Wiggle */
.wiggle {
  animation: wiggle 0.5s ease;
}

/* Glow effect */
.glow {
  animation: glow 2s ease-in-out infinite;
}

/* ========================================
   MODAL ANIMATIONS
   ======================================== */

.modal-overlay {
  animation: fadeIn 0.2s ease;
}

.modal {
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.closing {
  animation: fadeOut 0.2s ease;
}

.modal-overlay.closing .modal {
  animation: slideInBottom 0.3s cubic-bezier(0.4, 0, 0.2, 1) reverse;
}

/* ========================================
   TOAST ANIMATIONS
   ======================================== */

.toast {
  animation: slideInBottom 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.hiding {
  animation: slideInBottom 0.3s cubic-bezier(0.4, 0, 0.2, 1) reverse;
}

/* ========================================
   CONFETTI PARTICLES
   ======================================== */

.confetti {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--primary);
  animation: confetti 3s ease-out forwards;
  z-index: 9999;
  pointer-events: none;
}

.confetti:nth-child(1) {
  background: var(--primary);
  left: 10%;
  animation-delay: 0s;
}

.confetti:nth-child(2) {
  background: var(--success);
  left: 20%;
  animation-delay: 0.1s;
}

.confetti:nth-child(3) {
  background: var(--warning);
  left: 30%;
  animation-delay: 0.2s;
}

.confetti:nth-child(4) {
  background: var(--error);
  left: 40%;
  animation-delay: 0.3s;
}

.confetti:nth-child(5) {
  background: var(--primary-light);
  left: 50%;
  animation-delay: 0.4s;
}

.confetti:nth-child(6) {
  background: var(--primary);
  left: 60%;
  animation-delay: 0.5s;
}

.confetti:nth-child(7) {
  background: var(--success);
  left: 70%;
  animation-delay: 0.6s;
}

.confetti:nth-child(8) {
  background: var(--warning);
  left: 80%;
  animation-delay: 0.7s;
}

.confetti:nth-child(9) {
  background: var(--error);
  left: 90%;
  animation-delay: 0.8s;
}

/* ========================================
   HOVER EFFECTS
   ======================================== */

/* Card hover lift */
.card-hover-lift {
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.card-hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Button hover scale */
.btn-hover-scale {
  transition: transform var(--transition-base);
}

.btn-hover-scale:hover {
  transform: scale(1.05);
}

/* Icon hover rotate */
.icon-hover-rotate {
  transition: transform var(--transition-base);
}

.icon-hover-rotate:hover {
  transform: rotate(15deg);
}

/* Icon hover bounce */
.icon-hover-bounce:hover {
  animation: bounce 0.6s ease;
}

/* ========================================
   LOADING STATES
   ======================================== */

/* Skeleton loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    var(--bg-secondary) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Spinner */
.spinner {
  animation: spin 0.8s linear infinite;
}

/* Dots loading */
.loading-dots {
  display: inline-flex;
  gap: 0.25rem;
}

.loading-dots span {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--primary);
  border-radius: 50%;
  animation: dot-bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes dot-bounce {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ========================================
   TRANSITIONS
   ======================================== */

/* Smooth color transition */
.smooth-color {
  transition: color var(--transition-base), background-color var(--transition-base);
}

/* Smooth transform */
.smooth-transform {
  transition: transform var(--transition-base);
}

/* Smooth all */
.smooth-all {
  transition: all var(--transition-base);
}

/* ========================================
   STREAK ANIMATIONS
   ======================================== */

/* Fire emoji animation */
.streak-fire {
  display: inline-block;
  animation: fire-flicker 2s ease-in-out infinite;
}

@keyframes fire-flicker {
  0%, 100% {
    transform: scale(1);
    filter: brightness(1);
  }
  25% {
    transform: scale(1.1);
    filter: brightness(1.2);
  }
  50% {
    transform: scale(0.95);
    filter: brightness(0.9);
  }
  75% {
    transform: scale(1.05);
    filter: brightness(1.1);
  }
}

/* Milestone celebration */
.milestone-achieved {
  animation: celebrate 0.6s ease, glow 2s ease-in-out 3;
}

/* ========================================
   VIEW TRANSITIONS
   ======================================== */

/* View fade transition */
.view-container {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.view-container.active {
  opacity: 1;
  pointer-events: auto;
  animation: fadeIn 0.3s ease;
}

/* Tab transition */
.nav-tab {
  position: relative;
  overflow: hidden;
}

.nav-tab::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-base), left var(--transition-base);
}

.nav-tab.active::before {
  width: 100%;
  left: 0;
}

/* ========================================
   PROGRESS BAR ANIMATIONS
   ======================================== */

/* Progress fill animation */
.progress-fill {
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Shimmer effect on progress bar */
.progress-fill::after {
  animation: shimmer 2s infinite;
}

/* ========================================
   CHECKBOX ANIMATIONS
   ======================================== */

.habit-checkbox {
  position: relative;
  overflow: hidden;
}

.habit-checkbox::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  transform: scale(0);
  transition: transform var(--transition-base);
}

.habit-checkbox:active::before {
  transform: scale(1);
  transition: transform 0s;
}

/* Checkmark animation */
.habit-checkbox.checked::after {
  animation: scaleIn 0.2s ease;
}

/* ========================================
   NOTIFICATION BELL ANIMATION
   ======================================== */

.notification-bell {
  display: inline-block;
  transform-origin: top center;
}

.notification-bell.ringing {
  animation: bell-ring 0.5s ease-in-out;
}

@keyframes bell-ring {
  0%, 100% {
    transform: rotate(0deg);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: rotate(15deg);
  }
  20%, 40%, 60%, 80% {
    transform: rotate(-15deg);
  }
}

/* ========================================
   MOTIVATIONAL QUOTE ANIMATION
   ======================================== */

.motivational-quote {
  animation: fadeIn 0.5s ease;
}

.quote-icon {
  animation: float 3s ease-in-out infinite;
}

/* ========================================
   STAT CARD ANIMATIONS
   ======================================== */

.stat-card {
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-value {
  display: inline-block;
}

.stat-card.updating .stat-value {
  animation: bounce 0.6s ease;
}

/* ========================================
   HEATMAP CELL ANIMATIONS
   ======================================== */

.heatmap-cell {
  transition: all var(--transition-base);
  transform-origin: center;
}

.heatmap-cell:hover {
  transform: scale(1.2);
  z-index: 10;
}

.heatmap-cell.today {
  animation: pulse 2s ease-in-out infinite;
}

/* ========================================
   EMPTY STATE ANIMATION
   ======================================== */

.empty-state {
  animation: fadeIn 0.5s ease;
}

.empty-state-icon {
  animation: float 3s ease-in-out infinite;
}

/* ========================================
   DRAG AND DROP (Future feature)
   ======================================== */

.habit-item.dragging {
  opacity: 0.5;
  transform: rotate(5deg);
}

.habit-item.drag-over {
  border-color: var(--primary);
  background: var(--bg-tertiary);
}

/* ========================================
   SUCCESS ANIMATIONS
   ======================================== */

.success-checkmark {
  display: inline-block;
  animation: success-pop 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

@keyframes success-pop {
  0% {
    transform: scale(0) rotate(0deg);
  }
  50% {
    transform: scale(1.2) rotate(180deg);
  }
  100% {
    transform: scale(1) rotate(360deg);
  }
}

/* ========================================
   DELETE ANIMATION
   ======================================== */

.item-deleting {
  animation: fadeOut 0.3s ease forwards, slide-out-right 0.3s ease forwards;
}

@keyframes slide-out-right {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(100%);
  }
}