/* ═══════════════════════════════════════════════
   SCROLL REVEAL SYSTEM
   ═══════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal--delay-1 {
  transition-delay: 0.15s;
}

.reveal--delay-2 {
  transition-delay: 0.3s;
}

.reveal--delay-3 {
  transition-delay: 0.45s;
}

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

/* ═══════════════════════════════════════════════
   HERO LOAD ANIMATION
   ═══════════════════════════════════════════════ */
.hero .reveal {
  /* Override: hero elements use their own load-in timing */
  transition-duration: 0.8s;
}

.hero .reveal--delay-1 {
  transition-delay: 0.3s;
}

.hero .reveal--delay-2 {
  transition-delay: 0.6s;
}

/* ═══════════════════════════════════════════════
   HOVER & INTERACTION ANIMATIONS
   ═══════════════════════════════════════════════ */

/* Nav link underline slide */
@keyframes underline-slide {
  from { width: 0; }
  to   { width: 100%; }
}

/* Project card lift */
.project-card {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Gallery image scale */
.gallery__item img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Gallery overlay fade */
.gallery__overlay {
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Button press feedback */
.btn:active {
  transform: translateY(0) scale(0.98);
}

/* ═══════════════════════════════════════════════
   PULSE GLOW — used on hero name
   ═══════════════════════════════════════════════ */
@keyframes pulse-glow {
  0%, 100% {
    text-shadow: 0 0 60px rgba(108, 60, 224, 0.2);
  }
  50% {
    text-shadow: 0 0 100px rgba(108, 60, 224, 0.35);
  }
}

.hero__name {
  animation: pulse-glow 4s ease-in-out infinite;
}

/* ═══════════════════════════════════════════════
   LOADING SPINNER (for form submit)
   ═══════════════════════════════════════════════ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn--loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--clr-text);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ═══════════════════════════════════════════════
   PREFERS 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 {
    opacity: 1;
    transform: none;
  }

  .marquee__track {
    animation: none;
  }

  .hero__name {
    animation: none;
  }
}