/* Animations and UX Improvements */

/* Keyframe Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInFromBottom {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* Apply animations to components */

/* Habit cards fade in on load */
.habit-card {
  animation: fadeIn 0.4s ease-out;
}

.habit-card:nth-child(1) {
  animation-delay: 0.1s;
}

.habit-card:nth-child(2) {
  animation-delay: 0.2s;
}

.habit-card:nth-child(3) {
  animation-delay: 0.3s;
}

.habit-card:nth-child(4) {
  animation-delay: 0.4s;
}

.habit-card:nth-child(n+5) {
  animation-delay: 0.5s;
}

/* Hover effects for habit cards */
.habit-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.habit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* Modal animations */
.modal {
  animation: fadeIn 0.3s ease-out;
}

.modal-content {
  animation: slideInFromBottom 0.4s ease-out;
}

/* Button pulse on hover */
.button-primary:hover {
  animation: pulse 0.6s ease-in-out;
}

/* Form feedback animations */
.input:focus {
  animation: pulse 0.3s ease-out;
}

/* Delete button shake on hover */
.habit-delete-btn:hover {
  animation: shake 0.5s ease-in-out;
}

/* Success feedback */
@keyframes successPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
  }
}

.habit-card.success-feedback {
  animation: successPulse 0.6s ease-out;
}

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

.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 123, 0, 0.3);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Empty state fade in */
.empty-state {
  animation: fadeInScale 0.5s ease-out;
}

/* Badge pulse for new items */
.badge.new {
  animation: pulse 1s ease-in-out 3;
}

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Focus visible for accessibility */
*:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 2px;
}

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

/* Theme toggle smooth transition */
.theme-toggle {
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.theme-toggle:hover {
  transform: rotate(20deg) scale(1.1);
}

/* Header fade in on load */
.header {
  animation: fadeIn 0.5s ease-out;
}

/* Form validation feedback */
.input.error {
  border-color: #dc3545;
  animation: shake 0.5s ease-in-out;
}

.input.success {
  border-color: #28a745;
}

/* Tooltip fade in */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--background);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  margin-bottom: 8px;
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-5px);
}

/* Skeleton loading for placeholders */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface) 0%,
    var(--border-color) 50%,
    var(--surface) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius-sm);
}

/* Notification slide in */
@keyframes slideInFromRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.notification {
  animation: slideInFromRight 0.4s ease-out;
}

/* Ripple effect on button click */
.button {
  position: relative;
  overflow: hidden;
}

.button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.button:active::after {
  width: 300px;
  height: 300px;
}

/* Stagger animation for habit list */
.habit-list.loaded .habit-card {
  animation: fadeIn 0.5s ease-out backwards;
}

.habit-list.loaded .habit-card:nth-child(1) { animation-delay: 0.05s; }
.habit-list.loaded .habit-card:nth-child(2) { animation-delay: 0.1s; }
.habit-list.loaded .habit-card:nth-child(3) { animation-delay: 0.15s; }
.habit-list.loaded .habit-card:nth-child(4) { animation-delay: 0.2s; }
.habit-list.loaded .habit-card:nth-child(5) { animation-delay: 0.25s; }
.habit-list.loaded .habit-card:nth-child(6) { animation-delay: 0.3s; }
.habit-list.loaded .habit-card:nth-child(7) { animation-delay: 0.35s; }
.habit-list.loaded .habit-card:nth-child(8) { animation-delay: 0.4s; }
.habit-list.loaded .habit-card:nth-child(n+9) { animation-delay: 0.45s; }