/* ==========================================
   TYPOGRAPHY ANIMATIONS - Cinematic Motion
   ========================================== */

/* FADE-IN & SLIDE-UP ANIMATIONS */
@keyframes fadeInSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* FADE-IN ANIMATION */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* SLIDE-UP ANIMATION */
@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* SCALE-IN ANIMATION */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* LETTER SPACING PULSE ON HOVER */
@keyframes letterSpacingPulse {
  from {
    letter-spacing: normal;
  }
  to {
    letter-spacing: 2px;
  }
}

/* UNDERLINE REVEAL FROM LEFT */
@keyframes underlineReveal {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

/* ========================================
   REUSABLE ANIMATION CLASSES
   ======================================== */

/* Primary heading animation - fade in with slide up */
.anim-heading {
  animation: fadeInSlideUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Subheading animation - slightly faster */
.anim-subheading {
  animation: fadeInSlideUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Body text animation - subtle fade */
.anim-text {
  animation: fadeIn 0.8s ease-out both;
}

/* Container for staggered children */
.anim-stagger-container {
  --stagger-delay: 0.1s;
}

/* Staggered child animation */
.anim-stagger-container > * {
  animation: fadeInSlideUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.anim-stagger-container > :nth-child(1) { animation-delay: var(--stagger-delay) * 1; }
.anim-stagger-container > :nth-child(2) { animation-delay: var(--stagger-delay) * 2; }
.anim-stagger-container > :nth-child(3) { animation-delay: var(--stagger-delay) * 3; }
.anim-stagger-container > :nth-child(4) { animation-delay: var(--stagger-delay) * 4; }
.anim-stagger-container > :nth-child(5) { animation-delay: var(--stagger-delay) * 5; }
.anim-stagger-container > :nth-child(6) { animation-delay: var(--stagger-delay) * 6; }

/* Image animation - scale in */
.anim-image {
  animation: scaleIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Button animation - scale in with slight delay */
.anim-button {
  animation: scaleIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

/* ========================================
   HOVER INTERACTIVE EFFECTS
   ======================================== */

/* Heading hover effect - letter spacing pulse */
.anim-heading:hover,
.anim-subheading:hover {
  animation: letterSpacingPulse 0.4s ease-out forwards;
}

/* ========================================
   ACCESSIBILITY - RESPECT USER PREFERENCES
   ======================================== */

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

/* ========================================
   MOBILE RESPONSIVENESS
   ======================================== */

@media (max-width: 768px) {
  .anim-heading,
  .anim-subheading,
  .anim-text {
    animation-duration: 0.6s;
  }

  .anim-stagger-container {
    --stagger-delay: 0.08s;
  }

  .anim-button {
    animation-duration: 0.5s;
    animation-delay: 0.2s;
  }
}

@media (max-width: 480px) {
  .anim-heading,
  .anim-subheading {
    animation-duration: 0.5s;
  }

  .anim-stagger-container {
    --stagger-delay: 0.06s;
  }
}