/* ===========================================
   Penpoint Animation System
   Scroll-triggered animations via Intersection Observer
   =========================================== */

/* ===========================================
   KEYFRAME DEFINITIONS
   Extracted from app's onboarding
   =========================================== */

/* Fade in with upward rise - primary scroll animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Slide in from left - for headlines and alternating content */
@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide in from right - for alternating content */
@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale in - for icons and emphasis elements */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Quick fade - for rapid transitions */
@keyframes quickFade {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Subtle pulse for CTAs - draws attention */
@keyframes pulseScale {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.04);
  }
}

/* Shadow pulse for CTA buttons */
@keyframes pulseShadow {
  0%, 100% {
    box-shadow: -7px 7px 0 0 rgba(0, 0, 0, 0.2);
  }
  50% {
    box-shadow: -9px 9px 0 0 rgba(0, 0, 0, 0.25);
  }
}

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

/* ===========================================
   ANIMATION UTILITY CLASSES
   Apply these to elements, triggered by JS
   =========================================== */

/* Base state - elements only hidden when JS is ready
   This ensures content is visible if JS fails to load */
.js-ready [data-animate] {
  opacity: 0;
}

/* Triggered state - when element enters viewport */
[data-animate].animate-in {
  animation-duration: var(--duration-animation);
  animation-timing-function: var(--ease-penpoint);
  animation-fill-mode: forwards;
}

/* Animation type variations */
[data-animate="fade-up"].animate-in {
  animation-name: fadeInUp;
}

[data-animate="fade-left"].animate-in {
  animation-name: slideInFromLeft;
}

[data-animate="fade-right"].animate-in {
  animation-name: slideInFromRight;
}

[data-animate="scale"].animate-in {
  animation-name: scaleIn;
}

[data-animate="fade"].animate-in {
  animation-name: fadeIn;
}

[data-animate="quick"].animate-in {
  animation-name: quickFade;
  animation-duration: var(--duration-slow);
}

/* ===========================================
   STAGGER DELAYS
   Use data-stagger attribute for sequential animations
   =========================================== */

[data-stagger="1"] { animation-delay: 100ms; }
[data-stagger="2"] { animation-delay: 200ms; }
[data-stagger="3"] { animation-delay: 300ms; }
[data-stagger="4"] { animation-delay: 400ms; }
[data-stagger="5"] { animation-delay: 500ms; }
[data-stagger="6"] { animation-delay: 600ms; }

/* ===========================================
   SPECIAL ANIMATIONS
   For specific elements like CTA buttons
   =========================================== */

/* CTA pulse animation - subtle attention grab */
.animate-pulse {
  animation: pulseScale 2s var(--ease-in-out) infinite;
}

/* CTA shadow pulse - for download buttons */
.animate-pulse-shadow {
  animation: pulseShadow 2s var(--ease-in-out) infinite;
}

/* Delayed pulse - runs once after page load */
.animate-pulse-delayed {
  animation: pulseScale 2s var(--ease-in-out) 3s 1;
}

/* ===========================================
   HOVER ANIMATIONS
   Smooth state transitions
   =========================================== */

.hover-lift {
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-2px);
}

.hover-scale {
  transition: transform var(--duration-fast) var(--ease-out);
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* ===========================================
   HERO TEXT ROTATION
   Keyframe animations for cycling headlines
   =========================================== */

@keyframes heroTextFadeOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-12px);
  }
}

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

.hero-rotate__text {
  display: inline-block;
}

.hero-rotate__text.hero-rotate--fading-out {
  animation: heroTextFadeOut 600ms var(--ease-in-out) forwards;
}

.hero-rotate__text.hero-rotate--fading-in {
  animation: heroTextFadeIn 600ms var(--ease-in-out) forwards;
}