/* =============================================================================
   Receptionniste AI — Animations
   Version: 1.0.0 | POC
   ============================================================================= */

/* =============================================================================
   1. SCROLL REVEAL — BASE
   ============================================================================= */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 100ms; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 200ms; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 300ms; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 400ms; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 500ms; }


/* =============================================================================
   2. DIRECTIONAL REVEALS
   ============================================================================= */

.slide-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.slide-up.revealed {
  opacity: 1;
  transform: translateY(0);
}

.slide-left {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.slide-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.slide-right {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.slide-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.5s ease, transform 0.5s ease;
  will-change: opacity, transform;
}

.scale-in.revealed {
  opacity: 1;
  transform: scale(1);
}


/* =============================================================================
   3. HERO GRADIENT ANIMATION
   ============================================================================= */

.gradient-animate {
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}


/* =============================================================================
   4. KEYFRAME ANIMATIONS
   ============================================================================= */

/* Pulse dot — used by status indicators */
@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.4);
  }
}

/* Shimmer — used by skeleton loaders */
@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Slide in from right — used by toasts */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Fade out — used by toast dismissal */
@keyframes fadeOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(40px);
  }
}

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

/* Slide down — dropdown menus, notification panels */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Spin — loading spinners */
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}


/* =============================================================================
   5. TOAST ANIMATIONS
   ============================================================================= */

.toast-enter {
  animation: slideInRight 300ms ease forwards;
}

.toast-exit {
  animation: fadeOut 200ms ease forwards;
}

/* Auto-dismiss progress bar */
.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: currentColor;
  opacity: 0.3;
  border-radius: 0 0 0 var(--radius-md);
  animation: toastProgress 5s linear forwards;
}

@keyframes toastProgress {
  from { width: 100%; }
  to   { width: 0%; }
}


/* =============================================================================
   6. SIDEBAR TRANSITIONS
   ============================================================================= */

.sidebar {
  transition: width 300ms cubic-bezier(0.4, 0, 0.2, 1),
              transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar .sidebar-logo-text,
.sidebar .sidebar-section-title,
.sidebar .sidebar-item span,
.sidebar .sidebar-item-badge,
.sidebar .sidebar-footer-info {
  transition: opacity 200ms ease;
}

.sidebar.collapsed .sidebar-logo-text,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed .sidebar-item span,
.sidebar.collapsed .sidebar-item-badge,
.sidebar.collapsed .sidebar-footer-info {
  opacity: 0;
}

.sidebar.collapsed .sidebar-item-icon {
  transition: transform 200ms ease;
}


/* =============================================================================
   7. PAGE TRANSITIONS
   ============================================================================= */

.page-transition-enter {
  animation: pageEnter 300ms ease forwards;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-transition-exit {
  animation: pageExit 200ms ease forwards;
}

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

/* Content fade for tab/view switching */
.content-fade {
  transition: opacity 200ms ease;
}

.content-fade.hidden {
  opacity: 0;
  pointer-events: none;
}


/* =============================================================================
   8. INTERACTIVE MICRO-ANIMATIONS
   ============================================================================= */

/* Button press feedback */
.btn:active:not(:disabled) {
  transform: scale(0.97);
}

/* Card hover lift */
.card-hover {
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Loading spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}


/* =============================================================================
   9. REDUCED MOTION
   ============================================================================= */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  .slide-up,
  .slide-left,
  .slide-right,
  .scale-in {
    opacity: 1;
    transform: none;
  }
}