/* ============================================
   STORY FORGE — Animations & Keyframes
   ============================================ */

/* ---- KEYFRAMES ---- */

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

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

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

@keyframes modalSlideIn {
  from { opacity: 0; transform: scale(0.92) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(100%) scale(0.9); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastSlideOut {
  from { opacity: 1; transform: translateX(0) scale(1); max-height: 100px; }
  to   { opacity: 0; transform: translateX(100%) scale(0.9); max-height: 0; padding: 0; }
}

@keyframes dropdownSlideIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

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

@keyframes auroraFloat {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(30px, -20px) scale(1.05); }
  50%  { transform: translate(-20px, 30px) scale(0.95); }
  75%  { transform: translate(20px, 20px) scale(1.02); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes gradientShift {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.7; transform: scale(0.97); }
}

@keyframes heartBeat {
  0%   { transform: scale(1); }
  15%  { transform: scale(1.3); }
  30%  { transform: scale(1); }
  45%  { transform: scale(1.15); }
  60%  { transform: scale(1); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

@keyframes pageEnter {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow-sm); }
  50%       { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px var(--accent-glow-sm); }
}

@keyframes starTwinkle {
  0%, 100% { opacity: 0.8; }
  50%       { opacity: 0.2; }
}

@keyframes notificationBounce {
  0%  { transform: translateY(0) scale(1); }
  30% { transform: translateY(-4px) scale(1.1); }
  60% { transform: translateY(0) scale(0.95); }
  80% { transform: translateY(-2px) scale(1.03); }
  100%{ transform: translateY(0) scale(1); }
}

/* ---- ANIMATION UTILITIES ---- */

.animate-fade-in {
  animation: fadeIn 0.3s ease both;
}

.animate-fade-in-up {
  animation: fadeInUp 0.4s ease both;
}

.animate-page-enter {
  animation: pageEnter 0.4s ease both;
}

/* Staggered children animation */
.stagger-children > * {
  animation: fadeInUp 0.4s ease both;
}
.stagger-children > *:nth-child(1)  { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2)  { animation-delay: 0.10s; }
.stagger-children > *:nth-child(3)  { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4)  { animation-delay: 0.20s; }
.stagger-children > *:nth-child(5)  { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6)  { animation-delay: 0.30s; }
.stagger-children > *:nth-child(7)  { animation-delay: 0.35s; }
.stagger-children > *:nth-child(8)  { animation-delay: 0.40s; }
.stagger-children > *:nth-child(n+9){ animation-delay: 0.45s; }

/* Hover effects */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.hover-glow {
  transition: box-shadow var(--transition-base);
}
.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* Floating animation for hero elements */
.float-animation {
  animation: float 4s ease-in-out infinite;
}

/* Heart favorite animation */
.btn-favorite.active svg {
  animation: heartBeat 0.5s ease;
}

/* Page transition wrapper */
.page-transition {
  animation: pageEnter 0.35s ease both;
}

/* Glow pulse for CTA button */
.btn-glow-pulse {
  animation: glowPulse 2.5s ease-in-out infinite;
}

/* Streaming text animation */
.streaming-text {
  animation: fadeIn 0.1s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  15%       { transform: translateX(-6px); }
  30%       { transform: translateX(6px); }
  45%       { transform: translateX(-4px); }
  60%       { transform: translateX(4px); }
  75%       { transform: translateX(-2px); }
  90%       { transform: translateX(2px); }
}

@keyframes popIn {
  0%   { transform: scale(0.8); opacity: 0; }
  60%  { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(1); }
}

.animate-pop-in {
  animation: popIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

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