/* Animations & Transitions */

/* Scroll Triggered Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger delays for child items */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* Pulse animation for highlights */
@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(200, 245, 66, 0.5);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 10px rgba(200, 245, 66, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(200, 245, 66, 0);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

/* Smooth page fade transition */
.fade-out-page {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.fade-in-page {
  opacity: 1;
  transition: opacity 0.3s ease;
}

/* Loading Spinners */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  border-top-color: var(--color-bg);
  animation: spin 0.8s linear infinite;
  margin-right: var(--spacing-sm);
}

.spinner-primary {
  border-top-color: var(--color-accent);
}

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

/* Tennis Ball Spin */
@keyframes tennisSpin {
  0% { transform: translate(-100px, 150px) rotate(0deg); opacity: 0; }
  10% { opacity: 1; }
  50% { transform: translate(50vw, -100px) rotate(360deg); }
  90% { opacity: 1; }
  100% { transform: translate(100vw, 150px) rotate(720deg); opacity: 0; }
}

.tennis-ball-path {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100vw;
  height: 200px;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.animated-tennis-ball {
  width: 40px;
  height: 40px;
  background-color: var(--color-accent);
  border-radius: 50%;
  position: absolute;
  bottom: 0;
  box-shadow: 0 0 20px var(--color-accent);
  animation: tennisSpin 6s cubic-bezier(0.25, 1, 0.5, 1) infinite;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Tennis ball line mark inside ball */
.animated-tennis-ball::before {
  content: '';
  width: 80%;
  height: 80%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  position: absolute;
}