/* ============================================
   iSculptors — Animation System
   ============================================ */

/* ── Keyframes ── */
@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); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-20px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33%      { transform: translateY(-12px) rotate(1deg); }
  66%      { transform: translateY(-6px) rotate(-1deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes morphBlob {
  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% / 30% 50% 70% 60%;
  }
  75% {
    border-radius: 60% 30% 60% 40% / 70% 50% 40% 60%;
  }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ripple {
  0%   { transform: scale(0); opacity: 0.5; }
  100% { transform: scale(4); opacity: 0; }
}

@keyframes phoneGlow {
  0%, 100% {
    box-shadow: 0 25px 60px -10px rgba(59, 130, 246, 0.2),
                0 15px 30px -10px rgba(0, 0, 0, 0.3);
  }
  50% {
    box-shadow: 0 30px 70px -10px rgba(139, 92, 246, 0.25),
                0 20px 40px -10px rgba(0, 0, 0, 0.35);
  }
}

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Reveal on Scroll ── */
/* Reveal animations only activate when JS is loaded (html.js class present).
   Without JS, all content remains visible by default. */
html.js .reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

html.js .reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

html.js .reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

html.js .reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

html.js .reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

html.js .reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

html.js .reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

html.js .reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays for child elements */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }
.stagger-5 { transition-delay: 0.25s; }
.stagger-6 { transition-delay: 0.3s; }
.stagger-7 { transition-delay: 0.35s; }
.stagger-8 { transition-delay: 0.4s; }

/* ── Utility Animations ── */
.animate-float       { animation: float 6s ease-in-out infinite; }
.animate-float-slow  { animation: floatSlow 8s ease-in-out infinite; }
.animate-float-delay { animation: float 6s ease-in-out 2s infinite; }
.animate-pulse       { animation: pulse 2s ease-in-out infinite; }
.animate-spin        { animation: spin 1s linear infinite; }
.animate-shimmer {
  background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.08) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
.animate-gradient {
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
}
.animate-blob { animation: morphBlob 10s ease-in-out infinite; }
.animate-marquee { animation: marquee 30s linear infinite; }

/* ── Hover Micro-Interactions ── */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}
.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.hover-scale {
  transition: transform var(--duration-normal) var(--ease-out);
}
.hover-scale:hover {
  transform: scale(1.03);
}

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

/* ── Skeleton Loader ── */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-border-light) 25%,
    var(--color-surface-hover) 50%,
    var(--color-border-light) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
  border-radius: var(--radius-sm);
}

.skeleton-heading {
  height: 1.8em;
  width: 60%;
  margin-bottom: 0.75em;
}

.skeleton-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
}

.skeleton-card {
  height: 280px;
  border-radius: var(--radius-xl);
}

.skeleton-image {
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
}