/* ============================================================
   ANIMATIONS — Keyframes, Transitions, Motion System
   Portfolio | AI Engineer & Full Stack Developer
   ============================================================ */

/* ── Blob Float ──────────────────────────────────────────── */
@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25%       { transform: translate(3%, 5%) scale(1.04); }
  50%       { transform: translate(-2%, 8%) scale(0.97); }
  75%       { transform: translate(5%, -3%) scale(1.02); }
}

/* ── Loader Progress ─────────────────────────────────────── */
@keyframes loaderProgress {
  0%   { width: 0%; }
  60%  { width: 75%; }
  80%  { width: 88%; }
  100% { width: 100%; }
}

/* ── Gradient Shift ──────────────────────────────────────── */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ── Pulse ───────────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}

/* ── Ping ────────────────────────────────────────────────── */
@keyframes ping {
  75%, 100% { transform: scale(2); opacity: 0; }
}

/* ── Spin ────────────────────────────────────────────────── */
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Float (elements that hover in place) ────────────────── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-18px) rotate(3deg); }
}

/* ── Fade In Variants ────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Slide ───────────────────────────────────────────────── */
@keyframes slideInUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

/* ── Scale Reveal ────────────────────────────────────────── */
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.88); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes scaleInSpring {
  0%   { opacity: 0; transform: scale(0.7); }
  70%  { transform: scale(1.04); }
  100% { opacity: 1; transform: scale(1); }
}

/* ── Rotate In ───────────────────────────────────────────── */
@keyframes rotateIn {
  from { opacity: 0; transform: rotate(-20deg) scale(0.9); }
  to   { opacity: 1; transform: rotate(0) scale(1); }
}

/* ── Reveal (clip-path text reveal) ─────────────────────── */
@keyframes revealUp {
  from { clip-path: inset(100% 0 0 0); transform: translateY(100%); }
  to   { clip-path: inset(0% 0 0 0); transform: translateY(0); }
}

/* ── Shimmer (card / skeleton) ───────────────────────────── */
@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}

@keyframes progressShimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

/* ── Glow Pulse ──────────────────────────────────────────── */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(37,99,235,0.2); }
  50%       { box-shadow: 0 0 50px rgba(37,99,235,0.5), 0 0 80px rgba(37,99,235,0.2); }
}

@keyframes glowPulseSecondary {
  0%, 100% { box-shadow: 0 0 20px rgba(124,58,237,0.2); }
  50%       { box-shadow: 0 0 50px rgba(124,58,237,0.5); }
}

/* ── Typing Cursor ───────────────────────────────────────── */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── Orbit (3D ring decoration) ─────────────────────────── */
@keyframes orbit {
  from { transform: rotate(0deg) translateX(110px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(110px) rotate(-360deg); }
}

/* ── Morph Border ────────────────────────────────────────── */
@keyframes morphBorder {
  0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
  25%       { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
  50%       { border-radius: 50% 60% 30% 60% / 40% 70% 60% 30%; }
  75%       { border-radius: 70% 30% 50% 60% / 30% 50% 70% 50%; }
}

/* ── Text Gradient Animate ───────────────────────────────── */
@keyframes textGradient {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ── Page Transition ─────────────────────────────────────── */
@keyframes pageEnter {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Waving Hand ─────────────────────────────────────────── */
@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  15%       { transform: rotate(14deg); }
  30%       { transform: rotate(-8deg); }
  45%       { transform: rotate(14deg); }
  60%       { transform: rotate(-4deg); }
  75%       { transform: rotate(10deg); }
}

/* ── ANIMATION UTILITY CLASSES ───────────────────────────── */
.animate-fadeIn       { animation: fadeIn       var(--duration-slow) var(--ease-out) both; }
.animate-fadeInUp     { animation: fadeInUp     var(--duration-slow) var(--ease-out) both; }
.animate-fadeInDown   { animation: fadeInDown   var(--duration-slow) var(--ease-out) both; }
.animate-fadeInLeft   { animation: fadeInLeft   var(--duration-slow) var(--ease-out) both; }
.animate-fadeInRight  { animation: fadeInRight  var(--duration-slow) var(--ease-out) both; }
.animate-scaleIn      { animation: scaleIn      var(--duration-slow) var(--ease-spring) both; }
.animate-float        { animation: float        4s ease-in-out infinite; }
.animate-floatSlow    { animation: floatSlow    6s ease-in-out infinite; }
.animate-spin         { animation: spin         1.2s linear infinite; }
.animate-pulse        { animation: pulse        2s ease-in-out infinite; }
.animate-glow         { animation: glowPulse    3s ease-in-out infinite; }
.animate-wave         { animation: wave         2s ease-in-out infinite; display: inline-block; }

/* Delay utilities */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }

/* ── AOS Custom Overrides ────────────────────────────────── */
[data-aos] { transition-timing-function: var(--ease-out) !important; }

[data-aos="fade-up-custom"] {
  transform: translate3d(0, 40px, 0);
  opacity: 0;
  transition-property: transform, opacity;
}
[data-aos="fade-up-custom"].aos-animate {
  transform: translate3d(0, 0, 0);
  opacity: 1;
}

/* ── Hover Effects ───────────────────────────────────────── */
.hover-lift  { transition: transform var(--duration-base) var(--ease-spring); }
.hover-lift:hover { transform: translateY(-6px); }

.hover-scale { transition: transform var(--duration-base) var(--ease-spring); }
.hover-scale:hover { transform: scale(1.05); }

.hover-glow  { transition: box-shadow var(--duration-base) var(--ease-in-out); }
.hover-glow:hover { box-shadow: var(--shadow-glow-primary); }

/* ── Mouse Glow Follower (applied via JS) ────────────────── */
.mouse-glow {
  position: fixed;
  pointer-events: none;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  z-index: 2;
  transition: opacity var(--duration-slow) var(--ease-in-out);
  will-change: transform;
}

/* ── Magnetic Button Wrapper ─────────────────────────────── */
.magnetic { transition: transform var(--duration-base) var(--ease-out); }

/* ── Skeleton Loading ────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
    var(--bg-card) 25%,
    var(--bg-card-hover) 50%,
    var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.8s linear infinite;
  border-radius: var(--border-radius-sm);
}

/* ── Section Reveal (GSAP targets) ──────────────────────── */
.reveal-hidden {
  opacity: 0;
  transform: translateY(40px);
}

.reveal-hidden--left  { transform: translateX(-40px); }
.reveal-hidden--right { transform: translateX(40px); }
.reveal-hidden--scale { transform: scale(0.9); }