/* ==========================================================================
   ANIMATIONS — Rumit Walia Portfolio
   Keyframes, scroll reveals, counter animations, utility classes
   ========================================================================== */

/* ── Keyframes ─────────────────────────────────────────────────────────── */

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 30px, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translate3d(0, -20px, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translate3d(-30px, 0, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translate3d(30px, 0, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.92);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    transform: translate3d(100%, 0, 0);
  }

  to {
    transform: translate3d(0, 0, 0);
  }
}

@keyframes slideOutRight {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(100%, 0, 0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

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

  100% {
    background-position: calc(200px + 100%) 0;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(0, -8px, 0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes borderGlow {

  0%,
  100% {
    box-shadow: 0 0 5px rgba(125, 78, 127, 0.2);
  }

  50% {
    box-shadow: 0 0 20px rgba(125, 78, 127, 0.4);
  }
}

@keyframes marquee {
  0% {
    transform: translate3d(0, 0, 0);
  }

  100% {
    transform: translate3d(-50%, 0, 0);
  }
}

/* ── Animation Utility Classes ─────────────────────────────────────────── */

.fade-in {
  animation: fadeIn var(--duration-slow, 0.6s) var(--ease-out, ease-out) forwards;
}

.fade-in-up {
  opacity: 0;
  animation: fadeInUp var(--duration-slower, 0.8s) var(--ease-out, ease-out) forwards;
}

.fade-in-left {
  opacity: 0;
  animation: fadeInLeft var(--duration-slower, 0.8s) var(--ease-out, ease-out) forwards;
}

.fade-in-right {
  opacity: 0;
  animation: fadeInRight var(--duration-slower, 0.8s) var(--ease-out, ease-out) forwards;
}

.scale-up {
  opacity: 0;
  animation: scaleUp var(--duration-slow, 0.6s) var(--ease-bounce, cubic-bezier(0.175, 0.885, 0.32, 1.275)) forwards;
}

.float {
  animation: float 3.5s var(--ease-in-out, ease-in-out) infinite;
}

/* ── Stagger Delays ────────────────────────────────────────────────────── */

.stagger-1 {
  animation-delay: 0.1s;
}

.stagger-2 {
  animation-delay: 0.2s;
}

.stagger-3 {
  animation-delay: 0.3s;
}

.stagger-4 {
  animation-delay: 0.4s;
}

.stagger-5 {
  animation-delay: 0.5s;
}

.stagger-6 {
  animation-delay: 0.6s;
}

.stagger-7 {
  animation-delay: 0.7s;
}

.stagger-8 {
  animation-delay: 0.8s;
}

.stagger-9 {
  animation-delay: 0.9s;
}

.stagger-10 {
  animation-delay: 1.0s;
}

/* ── Scroll Reveal (Handles both .active and .revealed classes) ────────── */

.reveal {
  opacity: 0;
  transform: translate3d(0, 30px, 0);
  transition: opacity 0.6s var(--ease-out, ease-out), transform 0.6s var(--ease-out, ease-out);
  will-change: opacity, transform;
}

.reveal.active,
.reveal.revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.reveal-left {
  opacity: 0;
  transform: translate3d(-40px, 0, 0);
  transition: opacity 0.6s var(--ease-out, ease-out), transform 0.6s var(--ease-out, ease-out);
  will-change: opacity, transform;
}

.reveal-left.active,
.reveal-left.revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.reveal-right {
  opacity: 0;
  transform: translate3d(40px, 0, 0);
  transition: opacity 0.6s var(--ease-out, ease-out), transform 0.6s var(--ease-out, ease-out);
  will-change: opacity, transform;
}

.reveal-right.active,
.reveal-right.revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s var(--ease-out, ease-out), transform 0.6s var(--ease-bounce, ease-out);
  will-change: opacity, transform;
}

.reveal-scale.active,
.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* ── Loading / Skeleton ────────────────────────────────────────────────── */

.skeleton {
  background: linear-gradient(90deg, var(--color-gray-lightest, #f0f0f0) 25%, var(--color-offwhite-dark, #e8e8e8) 50%, var(--color-gray-lightest, #f0f0f0) 75%);
  background-size: 200px 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md, 8px);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-gray-lighter, #e0e0e0);
  border-top-color: var(--color-plum, #7d4e7f);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ── Hover Transitions ─────────────────────────────────────────────────── */

.hover-lift {
  transition: transform var(--duration-base, 0.3s) var(--ease-out, ease-out),
    box-shadow var(--duration-base, 0.3s) var(--ease-out, ease-out);
}

.hover-lift:hover {
  transform: translate3d(0, -4px, 0);
  box-shadow: var(--shadow-lg, 0 10px 25px rgba(0, 0, 0, 0.1));
}

.hover-scale {
  transition: transform var(--duration-base, 0.3s) var(--ease-out, ease-out);
}

.hover-scale:hover {
  transform: scale(1.03);
}

.hover-glow {
  transition: box-shadow var(--duration-base, 0.3s) var(--ease-out, ease-out);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow, 0 0 15px rgba(125, 78, 127, 0.3));
}

/* ── Marquee (Logo Carousel) ───────────────────────────────────────────── */

.marquee {
  overflow: hidden;
  white-space: nowrap;
}

.marquee__track {
  display: inline-flex;
  animation: marquee 30s linear infinite;
  will-change: transform;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

/* ── Accessibility Preference Override ────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .fade-in,
  .fade-in-up,
  .fade-in-left,
  .fade-in-right,
  .scale-up,
  .float,
  .marquee__track {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}